JP2015203284A - Door closer for storage box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door closer 1 for a storage box for constituting an elastic force adjustment mechanism P capable of varying a tension force thereof large-small, by adjusting an expansion degree of an elastic member (a tension coil spring 8) by an adjustment claw part 20 and a tooth-row part 9.SOLUTION: The elastic force adjustment mechanism P can adjust an expansion degree of the tension coil spring 8 large-small, by engaging a tip claw 20a of the adjustment claw part 20 with a desired tooth part 9a among a plurality of tooth parts 9a by sliding operation. Thus, resistance force when opening a door and a deceleration rate when closing, can be desirably adjusted with simple operation in response to opening-closing operation force of a user such as a powerless person and a robust person, needles to say to calmly execute opening-closing operation of a slide door 3.

Description

  The present invention relates to a door closer for a storage box configured such that when the slide door of the storage box is closed after being opened, the door is slid and closed slowly by a damper action.

  The door closer device is applied to an elevator that can quietly open and close the door at, for example, the entrance / exit (see Patent Document 1).

  In this door closer device, a rope suspended from a guide pulley is connected to a closer spring, and the rope is pulled downward by its elastic force. One end of the rope is provided with a traction force that pulls the one end of the rope through the guide pulley to the high-speed sliding door, thereby providing an automatic closing force for the high-speed sliding door.

For furniture such as furniture equipped with a door closer, there is a sliding door type sliding door, and there is a storage box that is set so as to be opened and closed slowly and quietly. It is designed to open while resisting a certain amount of resistance when the door is opened, and to close while decelerating at a constant rate when the door is closed.
However, some customers desire a structure that is set so that the resistance force when the door is opened and the deceleration rate when the door is closed can be adjusted as desired according to the user, such as the opening / closing operation force of the family.

JP 2007-217084 A

The door closer device of Patent Document 1 does not include an operation means that can adjust the resistance force received when the door is opened and the deceleration rate of the door when the door is closed. Here, furniture furnishings and the like are used for general use, and thus are often used by persons with different operating forces.
For this reason, it is hoped that a door closer for storage boxes that can adjust the door opening resistance and the deceleration rate when closing according to the user's opening and closing operation force, such as a weak person or a robust person, can be adjusted as desired with a simple operation. It was rare.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a door closer for a storage box that can adjust a resistance force when the door is opened and a deceleration rate when the door is closed by a simple operation.

(About claim 1)
In a door closer for a storage box having a door closer body attached to the inner periphery of the opening of the storage box and a guide member attached to the slide door, the door closer body has a damper disposed in the case. The damper is adapted to reciprocate the rod over the damper stroke between the first position and the second position with respect to the cylinder.
The elastic members arranged in parallel along the damper are provided so as to be stretchable along the longitudinal direction. The ratchet-like tooth row portion is composed of a plurality of tooth portions arranged in the axial direction, and is fixed in a row with the elastic member on the side opposite to the rod.
The adjustment claw portion slidably provided along the tooth row portion is connected to one end portion of the elastic member, and detachably engages with a desired tooth portion among the plurality of tooth portions. The trigger portion is detachably provided with respect to the guide member, and is connected to the tip end portion of the rod and the other end portion of the elastic member, and the rod is moved from the first position to the second position against the urging force of the elastic member. When extended to lock the rod in the second position.
An elastic force adjusting mechanism that adjusts the degree of expansion and contraction of the elastic member by the adjusting claw portion and the dentition portion and makes the tensile force variable is configured. In the opening process of the sliding door, the guide member moves in the opening direction against the urging force of the elastic member while being engaged with the trigger portion at the first position.
When the rod is locked by the trigger portion at the second position, the guide member moves away from the trigger portion in the opening direction. In the closing process of the sliding door, the guide member engages with the trigger portion at the second position to release the lock, and moves in the closing direction against the damper while being assisted by the urging force of the elastic member.

  According to the first aspect of the present invention, in the elastic force adjusting mechanism, the degree of expansion and contraction of the elastic member can be adjusted by engaging the adjusting claw portion with a desired tooth portion among the plurality of tooth portions. As a result, the opening and closing operation of the sliding door can be performed calmly, and the resistance force when opening the door and the deceleration rate when closing the door can be easily adjusted according to the opening and closing operation force of the user such as a weak person or a robust person. The operation can be adjusted as desired.

(About claim 2)
The second aspect differs from the first aspect in that the elastic force adjusting mechanism is constituted by a male screw rod and a female screw member.
According to the second aspect of the present invention, in the elastic force adjusting mechanism, the elastic member can be elastically displaced through the male screw rod by rotating the female screw member to adjust the degree of expansion / contraction of the elastic member. As a result, the sliding door can be opened and closed in a quiet manner as in claim 1, and the resistance and closing force when the door is opened according to the opening and closing operation force of the user such as a weak person or a robust person. The deceleration rate at the time can be adjusted as desired with a simple operation.

(Claim 3)
A tension coil spring is applied to the elastic member. According to the third aspect, the elastic member can be easily procured as an available general material, which is advantageous in terms of cost.

(About claim 4)
The elastic force adjustment mechanism has an adjustment dial that transmits a rotational force to the female screw member by a rotation operation. According to the fourth aspect, it is possible to obtain the convenience of adjusting the expansion / contraction amount of the elastic member by rotating the adjustment dial.

(Claim 5)
The trigger portion is provided as a piece portion having a triangular head and legs at both ends. At the second position in the sliding door opening process, when the bottom ridge of the head is engaged with the notch recess formed in the case, the bottom ridge is attached to the notch recess in the engaging direction by the elastic member. By energizing, the rod was locked in the second position.

  According to the fifth aspect of the present invention, the rod is locked at the second position by using the elastic member to urge the bottom ridge of the head in the direction of engagement with the recess. For this reason, a separate member for urging in the engaging direction is not required, and a simple structure is advantageous in terms of cost.

(About claim 6)
The guide member has a protruding portion provided so as to be able to appear and retract with respect to between the leg portions of the piece portion. The protruding portion is always urged by a spring in the protruding direction, and includes a first inclined portion that is inclined so as to be in contact with one of both leg portions and a second inclined portion that is inclined so as to be able to contact with the other ing.
The projecting portion is displaced in a direction where the first inclined portion is brought into contact with one of the both leg portions at the second position in the process of opening the sliding door, and the bottom ridge portion is engaged with the notched recess. In the second position in the closing process, the projecting portion is displaced in a direction in which the bottom ridge portion is removed from the recessed portion by applying the second inclined portion to the other of the both leg portions.

  According to a sixth aspect of the present invention, the guide member is constituted by a protruding portion provided so as to be able to protrude and retract with respect to between the leg portions of the piece portion. The protruding portion has a first inclined portion and a second inclined portion, and the first inclined portion is inclined so as to be able to abut against one of the both leg portions, and the second inclined portion is contacted with the other of the both leg portions. It is tilted so that it can touch. Thus, with a simple configuration, the engaging operation of the bottom ridge portion with respect to the notch recess can be performed according to the opening direction and the closing direction, and the guide member can be made compact and advantageous in cost.

(About claim 7)
In the case, an adjustment number indicating the strength of the elastic force is displayed by showing the displacement of the elastic member by clearly indicating the position of the adjustment claw portion.
According to the seventh aspect of the invention, since the adjustment number that clearly indicates the position of the adjustment claw portion is used, it is possible to obtain the convenience of quantitatively recognizing the expansion / contraction amount of the elastic member.

(Example 1) which is a perspective view which shows a storage box. (Example 1) which is a perspective view which shows the storage box of an open state. (Example 1) which is a perspective view of the sliding door-type slide door shown with a door closer. (A) is a front view showing the internal structure of the storage box door closer, (b) is a sectional view taken along the line AA of (a), (c) is an external view showing the storage box door closer, (d) is The end view which shows the door closer for storage boxes, (e) is a side view which shows the door closer for storage boxes (Example 1). (A) is a top view of a guide member, (b) is a front view of the guide member, (c) is a side view of the guide member, and (d) is a perspective view of the guide member (Example 1). (Example 1) which is a perspective view which shows the aspect which a protrusion part engages / disengages between both the legs of a piece part in an open direction and a closing direction. (A) is a front view which shows the internal structure of the door closer for storage boxes, (b) is an end view of the door closer for storage boxes, (c) is an external view which shows the door closer for storage boxes (Example 2).

  In the door closer for the storage box according to the present invention, the degree of expansion / contraction of the elastic member can be adjusted by the elastic force adjusting mechanism. As a result, the opening and closing operation of the sliding door can be performed calmly, and the resistance force when opening the door and the deceleration rate when closing the door can be easily adjusted according to the opening and closing operation force of the user such as a weak person or a robust person. Features that can be adjusted as desired by operation.

[Configuration of Example 1]
A first embodiment of the present invention will be described with reference to FIGS.
In the first embodiment according to the present invention, a storage box door closer 1 is applied to the storage box 2 shown in FIGS. 1 and 2. The storage box 2 has a sliding door type sliding door 3 shown in FIG. The storage box door closer 1 has a door closer body 4 and a guide member 5. The door closer body 4 is attached to the opening inner periphery 2a of the storage box 2, and the guide member 5 is attached to the slide door 3 side.

  As shown in FIGS. 4A and 4E, the door closer body 4 has a damper 7 disposed in a case 6 made of synthetic resin. The damper 7 reciprocates the rod 7a over the damper stroke H3 between the first position H1 and the second position H2 with respect to the cylinder 7b. The elastic member is arranged in parallel along the damper 7 as, for example, a tension coil spring 8. The ratchet-shaped tooth row portion 9 includes a plurality of tooth portions 9a arranged in the axial direction, and is arranged in a row with the tension coil spring 8 on the opposite side to the rod 7a.

The adjustment claw portion 20 includes a tip claw 20a, and is slidable along the tooth row portion 9 as shown in FIG. The adjustment claw portion 20 is connected to one end portion 8a of the tension coil spring 8, and the tip claw 20a is detachably engaged with a desired tooth portion 9a among the plurality of tooth portions 9a.
Since the dentition portion 9 has a ratchet shape, the adjustment claw portion 20 moves in the same direction by sliding the tip claw 20a with respect to the dentition portion 9 in the closing direction. Further, the adjustment claw portion 20 can be moved in the opening direction by temporarily pulling the tip claw 20a from the tooth portion 9a of the dentition portion 9 to disengage the both. The adjusting claw 20 and the tooth row 9 adjust the degree of expansion and contraction of the tension coil spring 8 to constitute an elastic force adjusting mechanism P that makes the tension force variable.

  In the case 6, as shown in FIG. 4C, by clearly indicating the position of the adjustment claw 20 within the adjustment window frame Wp, the expansion and contraction of the tension coil spring 8 is shown to indicate the strength of the elastic force. Adjustment numbers are displayed. Thereby, the expansion-contraction amount of the tension coil spring 8 can be digitized and recognized quantitatively. The adjustment numbers are classified into, for example, nine stages of expansion / contraction amounts, and are set such that the extension amount of the tension coil spring 8 increases as the number increases. Note that a distance range in which the adjustment claw 20 can slide in the left and right directions in the adjustment window frame portion Wp is defined as a spring adjustment width.

  The trigger portion 10 is detachably attached to the guide member 5 shown in FIG. 3 and is connected to the distal end portion of the rod 7 a and the other end portion 8 b of the tension coil spring 8. The trigger portion 10 locks the rod 7a to the second position H2 when the rod 7a is extended from the first position H1 to the second position H2 against the urging force of the tension coil spring 8. As will be described later, an inlet / outlet 6d for the guide member 5 is formed on the end surface of the case 6 corresponding to the left side of the trigger portion 10 (see FIGS. 4A, 4C, and 4D). .

More specifically, the trigger part 10 is provided as a piece part 13 having a triangular head part 10a and leg parts 10b and 10c at both ends.
In the opening process of the slide door 3, at the second position H2, when the bottom protrusion 10d of the head 10a is engaged with the notch recess 6a formed in the case 6, the notch recess is caused by the urging force of the tension coil spring 8. The rod 7a is locked at the second position H2 by urging the bottom protrusion 10d to the engagement direction in 6a.

  That is, the head portion 10a of the trigger portion 10 is provided so as to be turnable in the left-right direction around the pin 12, and always receives the tensile force of the tension coil spring 8 in a direction to return the rod 7a to the first position H1. . For this reason, when the trigger portion 10 reaches the second position H2, the head portion 10a rotates in the right direction N around the pin 12, the bottom ridge portion 10d is arranged in the notch recess 6a, and the bottom portion The protrusion 10d is urged in a direction to engage the notch 6a.

As a specific shape of the guide member 5, as shown in FIGS. 5A to 5D, the guide member 5 has a protruding portion 14 provided so as to be able to protrude and retract between both the leg portions 10 b and 10 c of the piece portion 13. The protruding portion 14 is always urged in the protruding direction M by the compression spring 15 from the guide body 16 having the mounting plate 16a, and is inclined so as to be able to come into contact with one of the leg portions 10b and 10c. 14a and the 2nd inclination part 14b which inclines so that contact | abutting is possible with respect to the other.
The protrusion 14 has an elastic claw 14c at the rear end, and the guide body 16 has a slit 16b corresponding to the elastic claw 14c (see FIG. 5B). The protruding portion 14 can be retracted in the direction of sinking opposite to the protruding direction M against the urging force of the compression spring 15. At this time, since the elastic claw 14c is engaged with the slit 16b, the protruding portion 14 can be held in the retracted position.

In the process of opening the slide door 3, the projecting portion 14 passing through the second position H2 engages the first inclined portion 14a with one of the leg portions 10b and 10c, thereby engaging the bottom protrusion 10d with the notch 6a. It is rotationally displaced in the direction of alignment (see FIG. 6).
In the closing process, the projecting portion 14 that passes through the second position H2 applies the second inclined portion 14b to the other of the leg portions 10b and 10c at the second position H2, so that the bottom ridge portion 10d is removed from the notched recess 6a. It is displaced in the turning direction to be removed (see FIG. 6).

  In the above configuration, in the process of opening the slide door 3, the guide member 16 moves in the opening direction against the urging force of the tension coil spring 8 while being engaged with the trigger portion 10 at the first position H1. In this state, the projecting portion 14 reaches the second position H2 while being engaged by being sandwiched between the leg portions 10b and 10c of the piece portion 13.

  When the guide member 5 moves in the opening direction from the second position H2, as shown in FIG. 6, the first inclined portion 14a of the protruding portion 14 hits the leg portion 10b, and the head portion 10a is rotated in the right direction N. The bottom protrusion 10d is engaged with the notch 6a. When the head 10a is rotated to the right, the protrusion 14 is disengaged from the legs 10b and 10c, so that the protrusion 1 is released from the restraint of the legs 10b and 10c, and is opened through the entrance 6d. Move in the direction.

  At the second position H2, when the head portion 10a is rotated in the right direction N and the bottom ridge portion 10d is engaged with the notch 6a, the tensile force of the tension coil spring 8 causes the head portion 10a to move in the right direction N. Rotating force is applied. For this reason, the bottom protrusion 10d of the head 10a is engaged and held in the notch recess 6a, and the rod 7a is locked in the second position H2.

In the closing process of the slide door 3, the guide member 16 engages with the trigger portion 10 at the second position H2 to release the lock. Specifically, when the protruding portion 14 moves from the doorway 6d to the second position H2 in the case 6 and moves in the closing direction, the second inclined portion 14b of the protruding portion 14 hits the leg portion 10c as shown in FIG. The head 10a is rotated in the left direction opposite to the right direction N.
By this rotation, the bottom protrusion 10d is released from the engagement with the notch recess 6a and becomes free, and the lock with respect to the rod 7a is released, and the protrusion 14 is between the legs 10b and 10c of the piece 13. Engaged by pinching.
As a result, the protrusion 14 moves in the closing direction against the damper 7 while being assisted by the urging force of the tension coil spring 8 while being sandwiched and engaged between the legs 10b and 10c. Return to 1 position H1.

  In the first embodiment, in the elastic force adjusting mechanism P, the tip claw 20a of the adjusting claw portion 20 is engaged with a desired tooth portion 9a among the plurality of tooth portions 9a by sliding operation, so that the extension coil spring 8 can be expanded and contracted. The degree can be adjusted. As a result, the opening / closing operation of the sliding door 3 can be performed calmly, as well as the resistance force when the door is opened and the deceleration rate when the door is closed according to the opening / closing operation force of the user such as a weak person or a robust person Can be adjusted as desired.

  Moreover, the trigger part 10 is provided as the piece part 13 which has the triangular head part 10a and the leg parts 10b and 10c at both ends. Using the tension coil spring 8, the bottom protrusion 10d is notched and biased in the direction of engagement with the recess 6a to lock the rod 7a. For this reason, a separate member for urging in the engaging direction is not required, and a simple structure is advantageous in terms of cost.

  Further, the guide member 5 is constituted by a protruding portion 14 provided so as to be able to protrude and retract between both the leg portions 10 b and 10 c of the piece portion 13. The projecting portion 14 has a first inclined portion 14a and a second inclined portion 14b, the first inclined portion 14a is inclined so as to be able to contact one of the leg portions 10b and 10c, and the second inclined portion 14b is made to be both legs. The portions 10b and 10c are inclined so as to be able to come into contact with the other. Thereby, with a simple configuration, it is possible to engage and disengage the bottom protrusion 10d with respect to the notch recess 6a according to the opening direction and the closing direction of the slide door 3, and the guide member 5 is compact and advantageous in terms of cost. can do.

[Configuration of Example 2]
FIG. 7 shows a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the pulling elastic force adjusting mechanism P is configured by the male screw rod 21 and the female screw member 22 instead of the adjustment claw portion 20 and the tooth row portion 9.

In this case, a nut-shaped female screw member 22 is rotatably provided at the right end of the elongated case 6 as shown in FIG. 7A. As shown in FIG. 7B, the tooth portion 22 a formed on the outer peripheral portion of the female screw member 22 meshes with the external tooth 24 a of the gear-shaped adjustment dial 24. As shown by an arrow S in FIG. 7A, a male screw rod 21 is screwed into the female screw member 22 so as to be able to advance and retract along the axial direction.
One end of the male screw rod 21 is connected to one end of the tension coil spring 8, and the other end protrudes outside the case 6.
One end of the tension coil spring 8 is attached with an adjustment plate 25 located in the adjustment window frame portion Wp. As shown in FIG. 7C, the distance range in which the adjustment plate 25 can slide left and right within the adjustment window frame portion Wp is defined as the spring adjustment width.

With the above configuration, when the adjustment dial 24 is rotated in one direction, the rotational force is transmitted to the female screw member 22 to rotate the female screw member 22. By this rotation, the male screw rod 21 is screwed, for example, in the opening direction, and the tension coil spring 8 is pressed and contracted.
When the adjustment dial 24 is rotated in the other direction, the rotational force is transmitted to the female screw member 22 to rotate the female screw member 22. Along with this rotation, the male screw rod 21 is screwed along the shaft portion in the closing direction, and the tension coil spring 8 is extended in the tension direction.

As described above, in Example 2, when the adjustment dial 24 is rotated, the male screw rod 21 is screwed back and forth in the axial direction by the rotation of the female screw member 22, so that the expansion / contraction amount of the tension coil spring 8 can be set as desired. it can. That is, the extension coil spring 8 can be expanded and contracted by the adjustment dial 24 to adjust the degree of expansion and contraction of the tension coil spring 8.
Thus, as in the first embodiment, the opening / closing operation of the sliding door 3 can be performed quietly, as well as the resistance force when the door is opened depending on the opening / closing operation force of the user such as a weak person or a robust person. The deceleration rate at the time of closing can be adjusted as desired with a simple operation.
Instead of the adjustment dial 24, a worm gear may be rotatably provided, and its external teeth may be engaged with the tooth portion 22a of the female screw member 22, and the female screw member 22 may be rotated by rotating the worm gear.

[Modification]
(A) The following materials may be used as the synthetic resin of Case 6 in Examples 1 and 2.
That is, polyamide (PA), polyester, polyimide, polyamideimide, polyacetal, polycarbonate (PC), polyphenylene ether (PPE), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyethylene (PE), polytetrafluoroethylene ( Plastic materials such as PTFE) or syndiotactic polystyrene (SPS) may be used.

(B) In the first and second embodiments, the tension coil spring 8 is used as the elastic member. However, the tension coil spring 8 is not limited, and a simple coil spring or compression coil spring may be used, or a rubber string or band may be used. In short, what is necessary is that the amount of elastic expansion and contraction can be adjusted.
(C) The tooth portions 9a of the dentition portion 9 used in the first embodiment may be arranged at equal intervals or unequal intervals. In short, the tip claw 20a of the adjustment claw portion 20 may be engaged with the tooth portion 9a. That's fine.
(D) In the first and second embodiments, the adjustment numbers for the extension amount of the tension coil spring 8 are classified into nine stages. However, the number of adjustments is not limited to nine, but is increased or decreased depending on the usage situation and changed to a desired number. May be.

  In the storage box door closer according to the present invention, the elastic member can adjust the degree of expansion / contraction of the elastic member by the elastic force adjusting mechanism, so that the opening / closing operation of the sliding door can be performed quietly, as well as the use of a weak person or a robust person. According to the opening / closing operation force of the person, the resistance force when the door is opened and the deceleration rate when the door is closed can be adjusted as desired with a simple operation. Since demand from businesses focusing on these usefulness is aroused, it can be applied to the machine industry through the distribution of related parts.

DESCRIPTION OF SYMBOLS 1 Storage box door closer 2 Storage box 3 Sliding door 4 Door closer body 5 Guide member 6 Case 6a Notch recessed part 7 Damper 7a Rod 7b Cylinder 8 Compression coil spring (elastic member)
8a One end portion of the compression coil spring 8b Other end portion of the compression coil spring 9 Tooth row portion 9a Tooth portion 10 Trigger member 10a Head portion 10b 10c Leg portion 10d Bottom ridge portion 13 Piece portion 14 Projection portion 14a First inclined portion 14b Second inclined part 15 Compression spring (spring)
16 Guide body 20 Adjustment claw portion 20a Tip claw of adjustment claw portion 21 Male screw rod 22 Female screw member 24 Adjustment dial H1 First position H2 Second position H3 Damper stroke

Claims (7)

In a door closer for a storage box having a door closer body attached to the inner periphery of the opening of the storage box and a guide member attached to the slide door side,
The door closer body is
A damper disposed in the case and reciprocating the rod over a damper stroke between a first position and a second position with respect to the cylinder;
An elastic member arranged in parallel along the damper and provided so as to be stretchable along the longitudinal direction;
A ratchet-like tooth row portion composed of a plurality of tooth portions fixed in a row with the elastic member on the opposite side of the rod and arranged in the axial direction;
An adjustment claw connected to one end of the elastic member, slidably provided along the dentition, and detachably engaged with a desired tooth among the plurality of teeth;
The rod is detachably attached to the guide member, and is connected to a tip end portion of the rod and the other end portion of the elastic member, and the rod is moved from the first position against a biasing force of the elastic member. A trigger portion that locks the rod in the second position when extended to a second position;
Adjusting the degree of expansion and contraction of the elastic member by the adjustment claw part and the dentition part, constituting an elastic force adjustment mechanism that makes the tensile force variable in size,
In the opening process of the sliding door, the guide member moves in the opening direction against the urging force of the elastic member while being engaged with the trigger portion at the first position, and the trigger portion at the second position. When the rod is locked, the guide member is released from the trigger portion and moves in the opening direction, and the guide member engages and locks the trigger portion at the second position in the closing process of the slide door. A storage box door closer that moves in a closing direction against the damper while being assisted by the urging force of the elastic member. In a door closer for a storage box having a door closer body attached to the inner periphery of the opening of the storage box and a guide member attached to the slide door side,
The door closer body is
A damper disposed in the case and reciprocating the rod over a damper stroke between a first position and a second position with respect to the cylinder;
An elastic member arranged in parallel along the damper and provided so as to be stretchable along the longitudinal direction;
A male threaded rod connected to one end of the elastic member on the opposite side of the rod and arranged to be movable in the axial direction;
A female screw member that is screwed into the male screw rod, and that causes the male screw rod to be moved back and forth in the axial direction by a left and right rotation operation to expand and contract the elastic member;
The guide member is detachably provided, and is connected to the tip end portion of the rod and the other end portion of the elastic member, and the rod is moved from the first position to the second position against the urging force of the elastic member. A trigger portion that locks the rod in the second position when extended to
Adjusting the degree of expansion and contraction of the elastic member by the male screw rod and the female screw member, constituting an elastic force adjusting mechanism that makes the tensile force variable in size,
In the opening process of the sliding door, the guide member moves in the opening direction against the urging force of the elastic member while being engaged with the trigger portion at the first position, and the trigger portion at the second position. When the rod is locked, the guide member is released from the trigger portion and moves in the opening direction, and the guide member engages and locks the trigger portion at the second position in the closing process of the slide door. A storage box door closer that moves in a closing direction against the damper while being assisted by the urging force of the elastic member.   The storage box door closer according to claim 1, wherein the elastic member is a tension coil spring.   The storage box door closer according to claim 2, wherein the elastic force adjustment mechanism includes an adjustment dial that transmits a rotational force to the female screw member by a rotation operation.   The trigger part is a piece part having a triangular head part and leg parts at both ends. In the second position in the opening process of the slide door, the trigger part projects into a notch recess formed in the case. When the strip is engaged, the rod is locked in the second position by urging the bottom protrusion in the notch recess by the elastic member in the engagement direction. The door closer for storage boxes according to claim 1 or 2.   The guide member has a protrusion provided so as to be able to protrude and retract with respect to between both legs of the piece, and the protrusion is always urged in a protruding direction by a spring, and one of the two legs is A first inclined portion that is inclined so as to be able to abut against the other, and a second inclined portion that is inclined so as to be able to abut against the other, wherein the protruding portion is located at the second position in the opening process of the slide door. One inclined part is applied to one of the two leg parts to displace the bottom ridge part in a direction to engage with the notch concave part, and the second inclined part is moved to the other of the two leg parts in the second position in the closing process. The storage box door closer according to claim 5, wherein the bottom ridge is displaced in a direction so as to be removed from the notch recess.   The adjustment number indicating the strength of the elastic force is displayed on the case by indicating the expansion / contraction displacement of the elastic member by clearly indicating the position of the adjustment claw portion. The door closer for the storage box according to 2.

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