JP5139873B2 - Latch device - Google Patents

Description

  The present invention is provided in either one of a fixed body and a movable body supported by the fixed body so as to be able to reciprocate, and biases forward movement from a predetermined forward movement position to a forward movement end position of the movable body. The present invention relates to an improvement of a latch device to be performed.

  There is a self-propelled forward movement mechanism of a movable body provided with a catcher having a catcher stopper, a striker body holding body, and these urging bodies. (See Patent Document 1) In this mechanism, when the catcher stopper is projected by the urging body, the holding body is in the forward movement position and is in the non-holding state, and the holding body is retracted. The catcher stopper is retracted when it is in the position and in the holding state. A catching hole for the catcher stopper is formed in the recess formed in the movable body, so that the energy is stored in the biasing means with respect to the entire catcher at the reference position of the catcher in which the catcher stopper is engaged with the catching hole. It has become. In this mechanism, when the movable body is moved to the self-running start position, the striker body enters the catcher holding body at the reference position, and the striker body is held and captured by the catcher. The catcher stopper is disengaged, and the catcher is relatively run to allow the movable body to self-run to the forward movement end position.

However, in such a mechanism, the movement of the catcher with the holding body held in the holding state, the left and right side walls of the case in which the catcher is movably housed on the outside of the holding piece of the holding body It is ensured by sliding in contact. At this time, if the side wall of the case expands outward due to elastic deformation or the like, the striker body comes out from between the holding pieces, and in this case, only the catcher moves to the travel end position by the biasing means in the case. Since it runs, the movable body is not self-propelled. Such inconvenience can be prevented by increasing the rigidity of the case by increasing the thickness of the side wall of the case, but it is difficult to make such a mechanism compact.
JP 2007-309088 (paragraph number 0049, FIG. 10)

  The main problem to be solved by the present invention is that, in this type of apparatus, the holding piece of the holding piece in the catcher that runs or moves relatively by urging after the holding and holding of the striker and self-runs the movable body. The holding state can be stably secured in a manner that contributes to downsizing of the apparatus.

In order to achieve the above object, according to the present invention, a latch device is provided with a striker provided on one of a movable body and a fixed body that supports the movable body so as to reciprocate. A latch device provided on the other of the movable body and the fixed body, including a catcher that travels or relatively travels by urging and moves the movable body to the forward movement end position after being captured at the moving position,
The catcher has a holding piece that holds the striker by holding it inward after receiving the striker between the front and rear ends of the piece at the predetermined forward movement position,
The latch device includes a wall that keeps the striker in a state of being slidably in contact with the holding piece from the outside during the traveling or relative traveling of the catcher,
The wall and the catcher are provided with separation preventing means slidably combined with each other,
The separation preventing means includes an engaged portion that continues along the direction of traveling or relative traveling of the catcher provided on the wall side,
It is composed of a hooking part for this hooked part provided on the catcher side,
The hooked portion was a groove formed on the wall side, and the hooked portion was a protrusion that fits in the groove without a gap .

  Since the state in which the holding piece captures and holds the striker is maintained while the wall is in sliding contact with the holding piece from the outside, the separation holding means can stably maintain the captured holding state. Thereby, even if the rigidity of the wall is not excessively increased, after the striker is held and captured by the catcher, the movable body can be surely self-propelled to the forward end position via both.

  According to this invention, since the wall and the catcher are provided with the separation preventing means that is slidably combined with each other, the movable body is moved or moved relatively by energizing after the striker is held and captured. The holding state of the holding piece in the catcher to be self-propelled can be stably ensured over a long period in a manner that contributes to the compactness of the apparatus.

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

  1 shows the sliding door 1 ′ provided with the latch device 4 according to the embodiment, and FIGS. 2, 5 and 6 show the main part of the sliding door 1 ′ as viewed from above. Show. FIG. 3 and FIG. 4 show the main part in cross section.

  7 shows a state in which the components constituting the apparatus are separated, and FIG. 8 shows the front end side of the base 40 and the latch body 41 which is also an additional braking unit 51, and the lower part of the latch body 41 is directed upward. It is shown as a state directed to. FIG. 9 shows the main part of the base 40.

  10 and 11 show the latch body 41 as viewed from above, and FIG. 11 shows a state in which the slider 412 has moved backward and the latch arm 413 has been rotated to the engaging position.

  FIG. 12 and FIG. 13 are cross-sectional views showing the location where the latch device 4 is incorporated in the sliding door 1 ′, and FIG. 12 shows that the sliding door 1 ′ has moved forward to a predetermined forward position at a speed higher than a predetermined speed. Fig. 6 shows a state where the distance x between the basic braking unit 52 and the additional braking unit 51 is narrowed. Note that the urging means 42 is not shown in FIGS.

  The latch device 4 according to this embodiment causes the forward movement of the movable body 1 supported by the fixed body 2 so as to be able to reciprocate from the predetermined forward movement position to the forward movement end position by urging. Is.

  In this embodiment, when the latch device 4 is operated to move the sliding door 1 ′ as the movable body 1 supported by the door frame 2 ′ as the fixed body 2 so as to be opened and closed in the closing direction. From the middle, it functions so as to self-propel to a closed position where it hits the door stop 2a. Further, in the forward movement (forward movement from the predetermined forward position (position of FIG. 5) of the sliding door 1 ′ to the position of FIG. 6 on the left side of FIG. 5), braking is performed by a braking means 5 described later. It is supposed to be granted. Apart from this, when the sliding device 1 ′ is moved in the opening direction by the latch device 4, the sliding door 1 ′ can be self-propelled from the middle to the fully opened position.

  The latch device 4 is attached to the striker 3 provided on either the movable body 1 or the fixed body 2 that supports the movable body 1 so as to be able to reciprocate, after being captured at a predetermined forward movement position of the movable body 1. A catcher 41 that travels or relatively travels by force and moves the movable body 1 to the forward movement end position is provided on the other of the movable body 1 and the fixed body 2.

  In the illustrated example, the striker 3 is provided on the door frame 2 ′ as the fixed body 2, and the latch device 4 is provided on the sliding door 1 ′ as the movable body 1.

  In the illustrated example, the striker 3 is provided in a groove 2c in which the upper end of the sliding door 1 'formed in the upper frame portion 2b of the door frame 2' is accommodated. In the illustrated example, the striker 3 has a groove in the groove 2c at a position spaced from the door contact 2a with respect to the front end 1a of the sliding door 1 'positioned in front of the sliding door 1' when the sliding door 1 'is closed. The upper end side of the shaft is fixed to the bottom of the groove so as to protrude downward from the bottom. (Fig. 13)

  On the other hand, in the illustrated example, the sliding door 1 'is opened at the upper end surface 1b of the sliding door 1' at the upper part thereof and continues long in the moving direction of the sliding door 1 ', and is opened forward at the front end 1a of the sliding door 1'. A built-in space 1c for the latch device 4 is provided, and the latch device 4 is accommodated in the built-in space 1c.

  Thus, when the sliding door 1 ′ is moved in the direction to close to the predetermined forward movement position, the striker 3 enters the installation space 1c from the front end 1a of the sliding door 1 ′ and is captured by the catcher 41 held at a standby position described later. It is like that. When the striker 3 is captured, the catcher 41 is released at the same time, and is moved in a direction away from the front end 1a of the sliding door 1 'by the urging force of the urging means 42 described later. In the illustrated example, the striker 3 provided on the door frame 2 ′ as the fixed body 2 is captured by the catcher 41 at a predetermined forward movement position of the sliding door 1 ′ as the movable body 1. The catcher 41 relatively moves in a direction away from the front end 1a of the sliding door 1 ′ by the urging of the sliding door 1 ′, and the sliding door 1 ′ is moved forward to the closed position that is the forward movement end position.

  Contrary to the illustrated example, when the striker 3 is provided on the sliding door 1 'side and the latch device 4 is provided on the door frame 2' side, the catcher that captures the striker 3 at the predetermined forward movement position of the sliding door 1 '. When the sliding door 1 ′ is moved toward the forward movement side by the urging of 41, the sliding door 1 ′ is self-propelled to the closed position that is the forward movement end position.

  The latch device 4 waits for the catcher 41 against the urging force of the catcher 41, the urging means 42 of the catcher 41, and the urging means 42 provided so as to be able to travel along the moving direction of the movable body 1. Holding means for holding in position. The latch device 4 causes the striker 3 provided on the other of the movable body 1 and the fixed body 2 to be captured by the catcher 41 at the standby position at the predetermined forward movement position of the movable body 1 and released by the holding means. Thus, the movable body 1 is caused to self-travel to the forward movement end position by the catcher 41 that travels or is relatively traveled by the urging means 42.

  In the illustrated example, the base 40 accommodated in the built-in space 1 c is provided with a catcher 41, an urging means 42, and a holding means, and a braking means 5 described later is incorporated so that the sliding door 1 ′ as the movable body 1 is incorporated. Is provided with a latch device 4.

  In the illustrated example, the base 40 is configured to have an elongated box shape with the upper surface opened. The base 40 is housed in the built-in space 1c so that one end thereof is positioned at the front end 1a of the sliding door 1 'so that the length direction of the base 40 is along the moving direction of the sliding door 1'. The base 40, which will be described later, continues on the inner surfaces of the pair of side plates 40a, 40a along the moving direction of the sliding door 1 'and extends along the length direction of the side plate 40a at a position substantially in the middle of the side plate 40a. A guide groove 60 a that also serves as a hooked portion 60 of the separation preventing means 6 is provided. In the illustrated example, the catcher 41 is guided in the guide groove 60a and travels in the base 40 along the length direction of the base 40. The base 40 functions as a travel lane of the catcher 41. It is like that. Further, a rack 55 constituting the braking means 5 is provided below one guide groove 60a of the pair of side plates 40a, 40a so that its teeth protrude downward. One end of the base 40 is covered by the front plate portion 40c below the guide groove 60a between the pair of side plates 40a, 40a, and the upper portion is opened above the front plate portion 40c. The striker 3 enters the base 40 from one end of 40. On one end side of the base 40, a horizontal plate portion 40d continuous with the upper end of the front plate portion 40c is formed. Reference numeral 40e in the drawing denotes an attachment block that is attached to the rear side of the front plate portion 40c and is screwed to the sliding door 1 'at a portion protruding downward from the lower edge of the base 40.

  Above the horizontal plate portion 40d, a window hole 40f is provided in a penetrating manner in each of the pair of side plates 40a and 40a. Further, the horizontal plate portion 40d is formed with a pair of locked portions 40g and 40g with a gap between the horizontal locked portion 40g and the other locked portion 40g in the width direction of the base 40. The pair of locked parts 40g, 40g are respectively connected to the rear edge of the rear side of the window hole 40f so that the lower edge of the window hole 40f reaches a position approximately in the middle of the window hole 40f in the front-rear direction. It is comprised so that the rib shape formed so that may be bordered may be made. Each of the pair of locked portions 40g and 40g has a hooking surface 40h facing the front end 1a side of the sliding door 1 ′ at the front end thereof, and an inner surface between the hooking surface 40h and the rear end thereof faces the hooking surface 40h. Accordingly, the inclined surface 40i gradually widens the width dimension of the locked portion 40g. In the standby position of the catcher 41, a holding piece 413 (to be described later) of the catcher 41 is positioned at a non-engaging position where the outer portion is inserted into the window hole 40f and the engaging portion 413a is not engaged with the striker 3. The lock part 413d formed on the holding piece 413 enters between the engaging surface 40h of the locked part 413d40g and the side edge part on the front side of the window hole 40f and is caught by the locked part 40g. That is, in the example shown in the figure, the holding means is constituted by the locked part 40g and the lock part 413d.

  The catcher 41 includes a catcher base 411, a slider 412, and a holding piece 413.

  The catcher base 411 is linked to the urging means 42 and is urged by the urging means 42. In the illustrated example, the catcher base 411 has left and right wall portions 411a and 411a and a lower wall portion 411b that are long in the length direction of the base 40, and the interval between the outer surfaces of the left and right wall portions 411a and 411a is set to the base 40. The pair of side plates 40a, 40a is configured to have a long and narrow box shape with an upper surface opening that has a size that allows a small clearance. A bridging piece 411c extending between the upper ends of the left and right wall portions 411a and 411a is formed on the front end side of the catcher base 411. Between the bridging piece 411c and the lower wall portion 411b, the pivot shaft of the holding piece 413 is formed. 413c is installed so that an axis line may be along an up-down direction. The rotation shafts 413c are provided on the left and right sides, and a space is formed between the left rotation shaft 413c and the right rotation shaft 413c. The rear end portion of the catcher base 411 is closed by a rear wall portion 411d extending between the left and right wall portions 411a and 411a. An attachment portion 411c at the front end of the tension coil spring 42a serving as the biasing means 42 is formed behind the rear wall portion 411d. The spring rear end of the tension coil spring 42 a is attached to a mounting portion 40 j provided on the base 40 on the rear end side of the base 40, and the spring 42 a is in a space above the guide groove 60 a in the base 40. It comes to fit.

  The slider 412 is combined with the catcher base 411 so as to be able to move back and forth, and is retracted against the bias by the strike of the striker 3. In the illustrated example, the slider 412 has a head 412a positioned in front of the left and right rotation shafts 413c of the holding piece 413 and a neck portion 412b passing between the left and right rotation shafts 413c. A body 412c having a front part integrally connected to the head 412a is provided. The body portion 412c is housed in a small space between the inner surfaces of the left and right wall portions 411a and 411a of the catcher base 411, and is accommodated in the catcher base 411 so as to be slidable in the front-rear direction. In the illustrated example, the slider 412 is placed between the rear part of the body part 412c and the rear wall part 411d of the catcher base 411, so that the slider 412 is located between the body part 412c and the neck part 412b. The parts 412d and 412d are always urged toward a forward position where the parts 412d and 412d are brought into contact with the linking protrusions 413b of the holding pieces 413 from the rear.

  The holding piece 413 is rotatably assembled to the catcher base 411 and includes a hooking portion 413 a for the striker 3. In the illustrated example, the holding piece 413 includes a hooking portion 413a that protrudes inward on one front end side, and has a linkage protrusion 413b that protrudes inward on the one rear end. In the illustrated example, the catcher 41 includes a pair of left and right holding pieces 413 and 413, and the right holding piece 413 has a rotating shaft 413 c on the right side at the rear end of the right side and the front end side of the catcher base 411. The left holding piece 413 is pivotally assembled to the front end side of the catcher base 411 with the left pivot shaft 413c at the rear end of the left side, and forwardly from the front end of the catcher base 411, respectively. The catcher base 411 is provided so as to protrude.

  In the illustrated example, the link protrusion 413b of the left holding piece 413 is accommodated in the link recess 412f as a link recess 412f between the left jaw portion 412e and the shoulder 412d of the slider 412, and The connecting protrusion 413b of the right holding piece 413 is placed in the connecting recess 412f as a connecting recess 412f between the right jaw portion 412e and the shoulder 412d of the slider 412, and the slider 412 and the pair of holding portions 413b. The holding pieces 413 and 413 are combined.

  When the slider 412 moves backward, the jaw portion 412e presses the linkage protrusion 413b, the holding piece 413 is rotated inward to the engagement position where the engagement portion 413a is engaged with the striker 3, and the slider 412 advances. The shoulder 412d presses the linkage protrusion 413b, and the holding piece 413 is rotated outwardly toward the non-engagement position.

  Further, the left and right holding pieces 413 are spaced apart in the traveling direction of the catcher 41, and a hooking portion 413 a is provided at one front end side which is the forward movement destination side of the movable body 1, and a rotating shaft is provided at one rear end side. A lock portion 413d is provided between the hook portion 413a and the rotation shaft 413c, with a hook surface 413e facing backward. In the illustrated example, in the standby position of the catcher 41, the holding piece 413 is placed in the window hole 40f of the base 40 at a position between the rotation shaft 413c of the holding piece 413 and the lock portion 413d. The lock part 413d is positioned in front of the locked part 40g so that the outer side is inserted. That is, the locked portions 40g are formed on both sides of the catcher 41 with respect to the traveling center line.

  When the catcher 41 is located on the most front end side of the base 40 (in the illustrated example, in the vicinity of the front end 1a of the sliding door 1 '), the linkage protrusion 413b of the holding piece 413 is inward of the rotation shaft 413c of the holding piece 413. Is pressed from the back by the shoulder 412d of the slider 412 biased forward, so that the holding piece 413 enters the window hole 40f of the base 40 and enters between the engaging portions 413a of the pair of holding pieces 413, 413. It is positioned at a non-engagement position where the striker 3 is allowed to enter. At this time, the locking portion 413d of the holding piece 413 is caught by the locked portion 40g of the base 40, and the catcher 41 is positioned at the most front end side of the base 40 with the holding piece 413 positioned at the non-engagement position. Positioned at the standby position. (FIG. 2) The urging force is most accumulated in the urging means 42 at this standby position.

  When the sliding door 1 ′ is moved forward to the predetermined forward movement position from the state where the catcher 41 is positioned at the standby position, the striker 3 enters the base 40 and passes between the engaging portions 413a of the pair of holding pieces 413 and 413. Then, the slider 412 is pushed rearward against the head 412a of the slider 412 against the urging force. When the slider 412 is pushed in this way, the linkage protrusion 413b of the holding piece 413 is pressed from the front by the jaw part 412e of the slider 412 inward of the rotation shaft 413c of the holding piece 413. The holding piece 413 is rotated in a direction so as to come out from the window hole 40f of the base 40, and is positioned at the engaging position that prevents the striker 3 from coming out from between the engaging portions 413a of the pair of holding pieces 413, 413. That is, the catcher 41 has a holding piece 413 that holds the striker 3 by holding the striker 3 inward after receiving the striker 3 between the front and rear ends at the predetermined forward movement position. Further, at this time, the outer surface of the lock portion 413d of the holding piece 413 enters inward of the inner edge of the engaging surface 40h of the locked portion 40g of the base 40, and the lock portion 413d comes off from the locked portion 40g and holds the holding portion. The holding by the means is released. (FIG. 5) Thereby, the catcher 41 is relatively moved backward in the base 40 by the urging means 42 in a state where the striker 3 is captured, and the sliding door 1 ′ is forcibly moved to the forward movement end position. . (Fig. 6)

  In this embodiment, the latch device 4 includes a wall that keeps the striker 3 held in sliding contact with the holding piece 413 from the outside during the traveling or relative traveling of the catcher 41. ing. In the illustrated example, after the pair of holding pieces 413 and 413 are pulled out from the window holes 40f of the base 40, the inner surfaces of the pair of side plates 40a and 40a of the base 40 are kept positioned at the engaging positions by the walls. The capture of the striker 3 is not unraveled.

  When the sliding door 1 ′ (FIG. 6) in the closed position, that is, the forward movement end position is moved backward toward the predetermined forward movement position, the catcher 41 that travels relatively toward the standby position in the backward movement process. As a result, the holding means 413 is stored again, and the holding piece 413 can enter the window hole 40f when it reaches the predetermined forward movement position. Therefore, the holding piece 413 is biased forward by the slider 412. Is rotated to the non-engagement position to release the striker 3, and the lock portion 413d is again hooked on the locked portion 40g, so that the catcher 41 is again positioned at the standby position. (Figure 2)

  In the latch device 4, when the movable body 1 is moved forward to a predetermined forward movement position, the holding piece 413 is rotated to the engagement position by causing the striker 3 to abut against the slider 412 of the catcher 41. The striker 3 can be captured by the catcher 41, and the holding means is released by this rotation, so that the catcher 41 runs or moves relatively from the standby position by the biasing means 42. Can do. The movable body 1 can be self-propelled to the forward movement end position by the traveling or relative traveling of the catcher 41. Since the holding means is released by the rotation of the holding piece 413, the force required for the release and the pushing amount of the slider 412 can be reduced as much as possible.

  Further, in this embodiment, there is provided separation preventing means 6 slidably combined with each other so as to prevent separation between the inner surface of the side plate 40a of the base 40 as the wall and the catcher 41. Yes. As described above, the state in which the holding piece 413 captures and holds the striker 3 is maintained by sliding the wall from the holding piece 413 from the outside. Can be maintained. Thereby, even if the rigidity of the side plate 40a of the base 40 is not excessively increased, after the striker 3 is held and captured by the catcher 41, the movable body 1 is surely self-propelled to the forward movement end position via both. In addition, the catcher 41 can be reliably returned to the standby position by the backward operation of the movable body 1 from the forward movement end position. As a result, the side plate 40a of the base 40 can be configured to the minimum necessary thickness, which can contribute to the compactness of the latch device 4. Further, since it is not necessary to press the outer surface of the side plate 40a of the base 40 from the outside by the inner surface of the built-in space 1c, the function of the latch device 4 is not impaired even if a gap is generated with time. .

  The separation preventing means 6 includes a hooked portion 60 that continues along the direction of travel or relative travel of the catcher 41 provided on the wall side, and a hooking portion 61 for the hooked portion 60 provided on the catcher 41 side. It consists of and. Thereby, the separation between the wall and the catcher 41 can be prevented in a range where the catcher 41 travels or is relatively traveled. In the example shown in the figure, hook portions 61 are formed on the left and right sides of the rear end side of the catcher base 411, the right hook portion 61 is hooked to the right hook portion 60 of the base 40, and the left side The hook 61 is hooked to the hooked portion 60 on the left side of the base 40.

  The hooked portion 60 is configured as a groove formed on the wall side, that is, the side plate 40 a side of the base 40. In the example shown in FIGS. 1 to 13, the hooked portion 60 is configured by the guide groove 60 a. In the illustrated example, rib-like protrusions 40b are formed on the inner surfaces of the left and right side plates 40a over the length direction of the base 40 at a position approximately in the middle of the base 40 in the vertical direction, and the rib-like protrusions 40b. A guide groove 60a is formed between the base portion and the inner surface of the side plate 40a. In the example shown in FIGS. 1 to 13, the engaging portion 61 protrudes downward from a sliding contact surface 51 c (described later) that is in sliding contact with the upper surface of the rib-shaped protrusion 40 b of the catcher base 411 and has no gap in the guide groove 60 a. It is configured as a protrusion 61 a that continues long in the traveling direction of the catcher 41 to be accommodated.

  Further, in this embodiment, the latch device 4 includes the braking means 5. In this embodiment, the braking means 5 is configured by supporting the two damper units 50 and 50 on the base 40 so as to be movable. Two damper units 50 and 50 are accommodated in the base 40 so as to be movable in the length direction of the base 40. In this example, one of the two damper units 50, 50 is integrally connected to the lower part of the catcher base 411 of the catcher 41 so as to form the damper unit 50 integrally with the catcher 41. (Hereinafter, this damper unit 50 is referred to as an additional braking unit 51.) The other of the two damper units 50, 50 is located behind the additional braking unit 51 and is linked to the additional braking unit 51 to form one of the catchers 41. Part. (Hereinafter, this damper unit 50 is referred to as a basic braking unit 52.)

  In this embodiment, the additional braking unit 51 is brought into contact with the fixed body 2 side, in this example, the striker 3 in the predetermined forward movement position of the movable body 11.

  The additional braking unit 51 includes a block portion 413d51a that fits in a space below the guide rib 40b in the base 40 by integrally connecting an upper portion thereof to a lower portion of the catcher base 411 that is substantially contained between the pair of side plates 40a, 40a of the base 40. Have. The horizontal dimension of the block portion 413d51a is smaller than the horizontal dimension of the catcher base 411. Sliding contact surfaces 51c facing downward are formed on the left and right sides between the catcher base 411 and the block portion 413d51a. The additional braking unit 51 is slidably supported in the base 40 so that the left and right sliding contact surfaces 51c, 51c are in contact with the corresponding rib-shaped protrusions 40b from above.

  On the other hand, the basic braking unit 52 has a plate-like head portion 52a having a width that fits between the pair of side plates 40a, 40a of the base 40 and a base portion integrally connected to the lower portion of the plate-like head portion 52a. 40 has a block portion 52b that fits in a space below the guide rib 40b. The horizontal dimension of the block portion 52b is smaller than the horizontal dimension of the plate-shaped head portion 52a, and a sliding contact surface 52d facing downward is provided between the plate-shaped head portion 52a and the block portion 52b. The basic braking unit 52 is slidably supported in the base 40 so that the left and right sliding contact surfaces 52d and 52d are respectively hooked on the corresponding guide ribs 40b from above. In this embodiment, protrusions 61d that extend in the running direction of the catcher 41 that fits in the guide groove 60a are formed on the left and right sides of the front end side and the rear end side of the basic braking unit, respectively. The protrusion 61d also prevents the separation of the wall from the catcher 41. That is, in this embodiment, the protrusion 61 d also functions as the engaging portion 61 of the separation preventing means 6.

Each of the two damper units 50 and 50 includes a damper main body 53 having a pinion 53a that applies a braking force to the rotation of the pinion 53a.
On the other hand, the base 40 is provided with the rack 55 for the pinion 53a of the damper main body 53 as described above.
According to the speed of the movable body 11 (that is, according to the magnitude of the kinetic energy of the movable body 11), specifically, depending on the speed of the sliding door 1′1 ′ at a predetermined forward movement position, The number of damper units 50 that engage with the pinion 53a of the damper is changed.

  The basic braking unit 52 has a damper main body 53 having a pinion 53a that is rotated about a rotation axis along the left-right direction on one surface side of the block portion 52b, and the pinion 53a of the damper main body 53 The base 40 is combined with the base 40 side so as to always mesh with a rack 55 formed on the lower side of the guide rib 40b formed on one of the pair of side plates 40a, 40a.

  On the other hand, the additional braking unit 51 is movably provided with a damper main body 53 including a pinion 53a that rotates about a rotation axis along the left-right direction on one surface side of the block portion 51a. When the speed at the predetermined forward position of the sliding door 1 ′ as the movable body 1 is less than the predetermined speed, the damper main body 53 is positioned at a separation position where the pinion 53 a is not engaged with the rack 55 by urging. It has become.

  Specifically, the damper main body 53 of the additional braking unit 51 is supported by the block 51a so as to be rotatable about a rotation shaft 51d extending in the left-right direction on one side across the rotation center of the pinion 53a. Yes. In the illustrated example, the damper main body 53 is fitted into the holding portion 51f of the movable base 51e provided with the holding portion 51f of the damper main body 53 and integrated with the movable base 51e to form the damper main body 53. Yes. The movable base 51e is assembled at its front part to the block part 51a so as to be rotatable with the rotation shaft 51d. Further, between the rotation shaft 51d of the movable base 51e and the rotation center of the pinion 53a, and above the movable base 51e, one end of the spring is pressed against the side of the movable base 51e from above, from above. The movable base 51e, that is, the damper main body 53 is attached at a spaced position where the lower side portion of the movable base 51e hits the lower regulating wall 51h of the block 51a and a space is provided between the upper end of the pinion 53a and the rack 55. A torsion coil spring (hereinafter, this spring is referred to as first spring means 51i) is provided.

  Further, in this embodiment, the basic braking unit 52 and the additional braking unit 51 are connected in a state where an interval x is opened by urging. Specifically, in the illustrated example, a compression coil spring is interposed between the rear end 51 b of the block portion 51 a of the additional braking unit 51 and the front end 52 c of the block portion 52 b of the basic braking unit 52. (Hereinafter, this spring is referred to as second spring means 54.) The spring forms an interval x between the basic braking unit 52 and the additional braking unit 51.

  Further, the basic braking unit 52 is formed with a pressing portion 52e against the damper main body 53 of the additional braking unit 51, and the basic braking unit 52 and the additional braking unit 51 in a state where the gap x is formed by the pressing portion 52e. And are connected. Specifically, in the illustrated example, a pressing portion 52e having a horn shape protruding forward is formed below the engaging portion with the second spring means 54 at the front end 52c of the block portion 52b of the basic braking unit 52. On the other hand, the block portion 51a of the additional braking unit 51 is formed with a receiving hole 51j for the pressing portion 52e that opens rearward at the rear end 51b of the block portion 51a and continues forward. The block 51a is formed with a window hole 51k communicating with the receiving hole 51j from the side. (FIGS. 12 and 13) An engaging projection 52f formed in the middle of the pressing portion 52e is formed in the window hole 51k. By engaging and engaging, the basic braking unit 52 and the additional braking unit 51 are connected in a state where an interval x is opened by the biasing.

  In this embodiment, when the speed of the movable body 1 at the predetermined forward movement position is equal to or higher than the predetermined speed, the basic braking unit 52 that always meshes the pinion 53a of the damper main body 53 with the rack 55. The distance x with the additional braking unit 51 is reduced against the bias, and the damper main body 53 of the additional braking unit 51 is moved by the pressing portion 52e to a position where the pinion 53a is engaged with the rack 55. Yes. (FIG. 13) Specifically, in the illustrated example, the receiving hole 51j is also opened at a position facing the rear end side 51g of the movable base 51e of the additional braking unit 51, and the movable body in a predetermined forward movement position. When the basic braking unit 52 is moved forward by the distance x against the bias of the second spring means 54 when the speed of 1 is equal to or higher than a predetermined speed, the pressing portion 52e The movable base 51e is rotated against the urging force of the first spring means 51i until the front end presses against the rear end 51g of the movable base 51e and the damper main body 53 engages the pinion 53a with the rack 55. It has become so. (FIG. 13) Thereafter, when the speed of the movable body 1 becomes less than a predetermined speed, the basic braking unit 52 is moved rearward by the interval x by the urging of the second spring means 54, and the pressing portion 52e. Since the front end does not press the rear end side 51g of the movable base 51e, the damper main body 53 is rotated by the biasing force of the first spring means 51i to the separation position. (Fig. 12)

  More specifically, the force applied to the sliding door 1 ′ by the biasing means 42 is E1, the force for moving the sliding door 1 ′ in the closing direction is E2, and the damper main body 53 by the first spring means 51i is separated. If E1 is the force to be positioned and E4 is the force to maintain the distance x between the basic braking unit 52 and the additional braking unit 51 by the second spring means 54, and if E1 + E2> E3 + E4, then the basic braking unit 52 And the pinion 53a of the damper main body 53 of the additional braking unit 51 are engaged with the rack 55 to apply braking by the two damper main bodies 53 to the movement of the sliding door 1 'as the movable body 1, and when E1 + E2 <E3 + E4, Only the pinion 53a of the damper main body 53 of the braking unit 52 is engaged with the rack 55, and the sliding door 1 as the movable body 1 is obtained. It is adapted to apply braking according to one of the damper body 53 to move.

  Thereby, in this example, when the speed of the sliding door 1 ′ as the movable body 1 from the predetermined forward movement position to the forward movement end position is equal to or higher than the predetermined speed, the sliding door 1 ′ is changed accordingly. The applied braking force is increased, and when the speed of the sliding door 1 ′ is equal to or lower than a predetermined speed, the braking force applied to the sliding door 1 ′ can be decreased accordingly. When the sliding door 1 ′ is moved backward, the basic braking unit 52 that always engages the rack 55 with the pinion 53 a is subjected to a force opposite to that when the sliding door 1 ′ moves forward. The distance x with the braking unit 51 is not narrowed, and only the braking force of the damper main body 53 of the basic braking unit 52 is applied to this backward movement.

  In the illustrated example, the damper main body 53 includes a rotor 53b and a stator 53c that rotatably supports the rotor 53b, and causes the viscous resistance of a fluid such as silicon oil enclosed in the stator 53c to act on the rotation of the rotor 53b. It is configured as a so-called rotary damper. Regardless of such viscous resistance, for example, a structure is provided between the rotor 53b and the stator 53c so as to be in sliding contact with the rotation of the rotor 53b so that a certain frictional resistance is generated in the rotation of the rotor 53b. Also good. The pinion 53a is assembled to the outer end located outside the stator 53c of the rotor 53b so that the rotation axis of the rotor 53b becomes the rotation axis of the pinion 53a.

  The braking means 5 only needs to apply a braking force to the travel of the catcher 41 so as to reduce the speed of the forward movement from the predetermined forward movement position to the forward movement end position of the movable body 1 via the catcher 41. The invention is not limited to the illustrated one. For example, when a piston damper that includes a cylinder and a piston and applies a braking force to the pushing or relative pushing of the piston is used as the braking means 5, Such a piston damper is incorporated in the base 40 so that the piston is pushed or relatively pushed.

The perspective block diagram which showed the use condition of the latch apparatus 4 The principal part plane block diagram of sliding door 1 ' AA cross-sectional configuration diagram in FIG. BB line cross-section block diagram in FIG. The principal part plane block diagram of sliding door 1 ' The principal part plane block diagram of sliding door 1 ' Exploded perspective view of the latch device 4 Perspective configuration diagram Perspective configuration diagram Plan view of catcher 41 Plan view of catcher 41 Main part longitudinal cross-section block diagram of sliding door 1 ' Main part longitudinal cross-section block diagram of sliding door 1 '

Explanation of symbols

1 Movable body 1
2 Fixed body 2
3 striker 4 latching device 41 catcher 413 holding piece

Claims (1)

After the striker provided in either the movable body or the fixed body that supports the movable body so as to be able to reciprocate is captured at a predetermined forward movement position of the movable body, the movable body is moved by being driven or relatively moved. A latch device provided with the other of the movable body and the fixed body with a catcher for moving the body to the forward movement end position,
The catcher has a holding piece that holds the striker by holding it inward after receiving the striker between the front and rear ends of the piece at the predetermined forward movement position,
The latch device includes a wall that keeps the striker in a state of being slidably in contact with the holding piece from the outside during the traveling or relative traveling of the catcher,
The wall and the catcher are provided with separation preventing means slidably combined with each other,
The separation preventing means includes an engaged portion that continues along the direction of traveling or relative traveling of the catcher provided on the wall side,
It is composed of a hooking part for this hooked part provided on the catcher side,
The latch device is characterized in that the hooked portion is a groove formed on the wall side, and the hooked portion is a protrusion that fits in the groove without a gap .

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