JP4320626B2 - Waterproof door device - Google Patents

Description

  The present invention relates to a waterproof door device including a standing assistance device that urges the waterproof door in a standing direction.

Conventionally, as described in Patent Document 1, a waterproof door device that reduces the weight of the waterproof door by a standing assist device that includes a spring that biases the waterproof door in the standing direction and a biasing member with a damper function has been known. is there. The waterproof door is provided in a case embedded in the floor so as to be able to rise and fall through a hinge. The biasing member with a damper function has one end connected to the hinge side of the case, the other end connected to the tip of the waterproof door, and the waterproof door tip until the waterproof door stands up at a predetermined angle from the lying state And the waterproof door is urged rearward. Further, the spring biases the waterproof door from the lying state to the standing state of the waterproof door. Further, the urging force of the spring against the waterproof door in the standing state is extremely small.
Japanese Patent Laid-Open No. 10-238240

  In addition, the applicant of the present application previously filed as a waterproof door device having a hinge device that rotates the base of the waterproof door toward the door frame while retreating the base of the waterproof door away from the door frame when the waterproof door is raised from the lying position. There is a technique of the prior application 1 (Japanese Patent Application No. 2003-426721). 2 to 4, the lower ends of the first link 14 and the second link 15 are connected to the movable base 12 connected to the fixed base 11, and the first link 14 and the second link 15 are connected. Is connected to the base 1a of the waterproof door 1. When the waterproof door 1 is erected, the waterproof door 1 is retracted from the door frame 4 so as to move away from the door frame 4 by the link operation of the first link 14 and the second link 15 from the lying position A to the predetermined standing angle position C. 1 is rotated in the standing direction, and the waterproof door 1 is centered on a support shaft 13 that fixes the first link 14 and the second link 15 and connects the fixed base 11 and the movable base 12 from a predetermined standing angle position C. It rotates in the standing direction.

In the technique of the prior application 1, the instantaneous center when the waterproof door 1 is rotated toward the predetermined standing angle position C by the link operation of the first link 14 and the second link 15 is the fixed base 11 and the movable base 12. Are moved toward the center of gravity (tip 1b) of the waterproof door 1 from the support shaft 13 connecting them (moving on a curve L indicated by a one-dot chain line with reference to FIG. 3). The instantaneous center when rotating from the angular position C is a support shaft 13 that connects the fixed base 11 and the movable base 12. The instantaneous center of the waterproof door 1 moves from the position of the center of gravity (tip side) to the support shaft 13 with respect to a predetermined standing angle position C, and the distance between the center of gravity of the waterproof door 1 and the instantaneous center becomes longer. . For this reason, the rotational moment when the waterproof door 1 is erected increases rapidly from Fb1 to Fb2 at a predetermined erection angle position C, as shown by, for example, the operating force Fb without the assisting device shown in FIG. In particular, when the waterproof door 1 is erected manually, an operation force for pushing up the waterproof door 1 at a predetermined standing angle position C is undesirably increased. In the technique of Patent Document 1, the spring for reducing the weight of the waterproof door biases the waterproof door in the standing direction of the waterproof door in the entire process from the fall position to the standing position of the waterproof door. Even if such a spring is applied to the technique of the prior application 1, an increase in operating force at a predetermined standing angle position in response to a sudden increase in operating force at a predetermined standing angle position. It cannot be controlled to keep the value small. Also, since the spring urges the waterproof door from the fall position to the standing position of the waterproof door, the urging force becomes weaker as the waterproof door rises, and the auxiliary effect for reducing the weight of the waterproof door becomes extremely small On the other hand, when the waterproof door is laid down from the standing state to the lying position, the spring is greatly compressed, and a strong force is required when it is in the lying state.
This invention can suppress a sudden increase in operating force when standing the waterproof door, and can fall with a small operating force when the waterproof door is changed from the standing state to the lying position, and the waterproof door even when the standing position is approached when standing. It is to provide a waterproof door device provided with a stand-up assisting device in which the biasing force of a spring as an assist when standing up is not reduced.

  The waterproof door device according to the present invention is directed to the base of the waterproof door while the waterproof door is raised from a lying position that closes the upper opening of the housing recess, while the base of the waterproof door is moved backward away from the door frame and directed toward the door frame. The waterproof door device is provided with a standing-up assisting device that supports the standing-up of the waterproof door while connecting the hinge for the waterproof door provided in the housing recess configured to rotate and the standing-up assisting device extends from the lying position in the standing direction. When turning the waterproof door, it is equipped with a late standing assisting means that urges the waterproof door in the standing direction from a predetermined standing angle position where the waterproof door base turns from retreating away from the door frame to turning toward the door frame It is characterized by.

  The urging member for standing assistance included in the latter standing assisting means rotates integrally with the waterproof door from the lying position of the waterproof door to the predetermined standing angle position, and applies the urging force from the predetermined standing angle position. Features.

  The above-mentioned late standing assisting means is such that the lower bracket is pivotally supported on the fixed bracket via the support shaft so as to be swingable in the door tilting direction, the lower bracket is provided with a standing assist biasing member, and the upper bracket is supported by the support shaft. The stand-up assisting biasing member can be held in a compressed state at a position close to the lower bracket so that the upper bracket can be swung through the stand-up support so that the waterproof door can stand up with the biasing force. Is connected to the waterproof door, and a control mechanism for controlling the swinging motion of the upper and lower brackets is interposed between the fixed bracket and the upper and lower brackets. The control mechanism moves the waterproof door from the lying position to a predetermined standing angle position. Until the upper bracket is fixed in the proximity position, the upper bracket is swung together with the lower door together with the lower bracket in the standing direction of the waterproof door. Characterized in that it is configured to lower bracket while unpin for racquet is secured to the fixing bracket.

  The control mechanism includes an elongated hole formed in the side wall of the lower bracket, and an engagement / disengagement groove provided with a release opening that opens in the tilting direction of the waterproof door in a shape substantially the same as the elongated hole formed in the sidewall of the upper bracket. The control cam groove is formed on the fixed bracket and the cam pin. The cam pin is inserted into the engagement / disengagement groove, the long hole, and the control cam groove, and the control cam groove extends from the fall position of the waterproof door to the predetermined standing angle position. The upper and lower brackets are fixed together by positioning the cam pin at the engagement holding portion of the engagement / disengagement groove by the separation restriction cam surface, and the cam pin is fixed to the control cam groove from the separation restriction cam surface of the control cam groove at a predetermined standing angle position. The lower bracket is moved to the cam portion to fix the lower bracket to the fixed bracket, and is positioned at the separation opening of the engagement / disengagement groove to release the fixing to the lower bracket of the upper bracket.

  In addition, the standing assistance device includes initial standing assistance means for urging the waterproof door in the standing direction from a lying position to a predetermined standing angle position.

  A hinge is pivotally supported on a fixed base fixedly arranged on a fixed portion so that the tip of the movable base can swing by a support shaft, and the lower end of the first link is rotatably connected to the movable base. The lower end portion of the second link is pivotally connected to a position away from the connecting portion of the first link and the movable base, and the door mounting member integrally fixed to the waterproof door is connected to the first and second links. The upper end is pivotally attached, and the movable base is restricted from swinging in the direction away from the fixed base from the fall position of the waterproof door to the predetermined standing angle position. The initial standing assisting means is disposed between the tip of the waterproof door and a position away from the support shaft of the movable base so as to release the swing restriction.

  The standing-up assisting biasing member of the latter-stage standing-up assisting means is a torsion coil spring.

  The initial standing assisting means is a gas damper.

  In the waterproof door device according to the present invention, the waterproof door base is raised by the later standing auxiliary means from the predetermined standing angle position at which the waterproof door base turns from the retreating movement away from the door frame to the rotation approaching the door frame. Therefore, it is preferable that a sudden increase in the operating force due to the instantaneous center movement of the waterproof door at a predetermined standing angle position can be controlled and suppressed by the urging force of the late standing assisting means. Further, since the late standing assisting means biases the waterproof door in a range from the predetermined standing angle position to the standing position, even if the waterproof door has a small biasing force, the biasing force is strongly increased even when the waterproof door is in the standing position. When the waterproof door is set to the fall position, it is preferable that the urging force of the late rise assist means does not act in the range from the predetermined standing angle position to the fall position.

  The waterproof door device 9 shown in FIG. 1 is provided in a storage recess 6 formed on a floor surface F of an entrance / exit of a building or a parking lot. A case 2 is installed in the housing recess 6, and the waterproof door 1 is disposed on the case 2 via a hinge 10. The waterproof door device 9 is in a fallen state (falling position A in FIG. 2) that closes the upper opening of the case 2 via the hinge 10 connected to the base 1a of the waterproof door 1 by manual operation by the operator. It stands up in the standing state (standing position B in FIG. 4) that closes the entrance / exit. And the waterproof door 1 which stood up is locked in the state pressed against the door frame 4 with the packing member 3 erected on the right and left of the front plate 2a side of the case 2 by a lock device 20 which will be described later. The waterproof door device 9 includes an erection assisting device 8 that urges the waterproof door 1 toward the standing position B to assist the standing when the waterproof door 1 is raised from the lying position A to the standing position B. An edge member 5 is attached along the case 2. The packing member 3 is attached to the front plate 2 a of the case 2 in the horizontal direction (waterproof door width direction), and is continuous with both ends of the packing member 3 and the lower end of the packing member 3 in the vertical direction of the door frame 4. The packing member 3 passes through notches formed at both ends of the waterproof door 1 corresponding to the packing member 3 so as not to interfere with the waterproof door 1 at the lying position A. A drain pipe (not shown) is connected to the case 2, and water that has entered the case 2 through the drain pipe is drained. A support member 7 is attached to the rear plate 2b of the case 2 so as to support the front end portion 1b of the waterproof door 1 in the lying position A.

  The hinge 10 will be described. A fixed base 11 is fixedly disposed on the bottom plate (fixed portion) 2c of the case 2 via a base plate 18 on the left and right sides on the front plate 2a side. As shown in FIG. 5, each of the fixed bases 11 has a substantially U-shaped cross section in which a pair of movable brackets 12 b that are integrally opposed to each other on the right and left sides of the waterproof door 1 of the abutting portion 12 a are provided. The front end of the waterproof door 1 is pivotally supported by the support shaft 13 so as to be swingable in the up and down direction of the waterproof door 1. At the middle part of the movable base 12 (on the waterproof door front end 1b side from the support shaft 13), the lower end of the first link 14 provided with the link operation fixing part 14a is rotated between the movable brackets 12b. Pins are freely connected. A rear end portion of the movable base 12 is pivotally connected to a lower end portion of the second link 15 set longer than the length of the first link 14 in a state where the lower end portion is interposed between the movable brackets 12b. The other ends of the first and second links 14 and 15 are pivotally attached to a door mounting member 16 that is integrally fixed to a channel member 26 that is fixed to the back surface of the waterproof door 1. By connecting the hinge 10 of this link structure to the base 1a of the waterproof door 1, when the front end 1b of the waterproof door 1 is swung in the standing direction, the waterproof door is operated by the link operation of the first and second links 14 and 15. When the first base portion 1a moves away from the door frame 4 and the link operation fixing portion 14a of the first link 14 contacts the contact portion 12a, the link operations of the first and second links 14, 15 are fixed. Then, the operation of the base 1a of the waterproof door 1 that has been retracted away from the door frame 4 stops (FIG. 3). Thereafter, the base 1 a of the waterproof door 1 rotates toward the door frame 4 by the movable base 12 swinging toward the door frame 4 together with the first and second links 14 and 15 around the support shaft 13. (Fig. 4).

  Next, the locking device 20 will be described with reference to FIGS. Brackets 22 are fixedly arranged on the bottom plate 2c of the case 2 via the base plate 18 on the left and right sides on the rear plate 2b side. A base end 24 of a lock bar 23 is connected to the bracket 22 via a spherical bearing, and the lock bar 23 can tilt in any direction within a predetermined angle range. The channel member 26 is attached to the left and right corresponding to the hinge 10 on the back surface of the waterproof door 1 and is formed in a U-shaped cross section. A pair of left and right guide rails 29 are attached to the lower surface of the channel member 26 via a plate member 27, and a groove 30 is formed between the plate member 27 and the guide rail 29 in the vertical direction of the door. A slide member 31 is inserted into the groove 30 so as to be movable in the vertical direction of the door. A first shaft member 32, which is an engaging / disengaging portion of the front end of the lock bar 23, is attached to the front end side of the slide member 31 (the front end portion 1 b side of the waterproof door 1) in parallel with the door width direction. Further, a notch 33 is formed on the distal end side of the slide member 31 so that the distal end of the lock bar 23 engaged with the first shaft member 32 does not interfere. A groove 34 that can be engaged with and disengaged from the first shaft member 32 is formed at the tip of the lock bar 23.

  The channel member 26 is provided so as to rotate a handle 36 at a position on the base 1a side of the waterproof door 1 with respect to the slide member 31. The handle 36 includes the slide member 31, a handle shaft 37, and a swing arm. 38 and the link member 39 are connected by a connecting member 40. A pair of left and right swing arms 38 are integrally attached to a handle shaft 37 that is rotatably supported by the channel member 26, and the distal ends of the left and right swing arms 38 are connected by a pin member 41. The rear end of the L-shaped link member 39 is rotatably connected to the pin member 41. The front end of the link member 39 is rotatably connected to a second shaft member 42 attached to the rear end side (waterproof door base 1a side) of the slide member 31. From this, the slide member 31 moves in the door vertical direction (direction between the base 1a and the tip 1b of the waterproof door) through the connecting member 40 by the rotation of the handle 36. A holder (not shown) is installed on the back surface of the waterproof door 1 so that the handle 36 does not rotate while the waterproof door 1 is swinging.

  Next, the standing assistance device 8 will be described. The stand-up assisting device 8 has a structure in which the waterproof door 1 is between the lying position A and a predetermined standing angle position C where the base 1a of the waterproof door 1 turns from retreating away from the door frame 4 to turning toward the door frame 4. In some cases, initial standing assisting means 43 for biasing the waterproof door 1 in the standing direction (FIG. 2), and the latter stage shown in FIG. 10 for biasing the waterproof door 1 in the standing direction from the predetermined standing angle position C to the standing position B. Standing assisting means 44 is provided. The initial standing assisting means 43 is a gas damper, and a pair of gas dampers 43 are provided on the left and right sides of the hinge 10 as shown in FIG. In the gas damper 43, the piston rod tip 43b on the base 1a side of the waterproof door 1 is swingably connected to the rear end of the movable base 12, and the end 43c on the tip 1b side of the waterproof door 1 is connected to the channel member 26. It is connected so that it can swing. The gas damper 43 urges the distal end portion 1b of the waterproof door 1 in the direction of the distal end portion 1b of the waterproof door 1 and urges the waterproof door 1 in the standing direction.

  The late standing assisting means 44 are provided adjacent to the hinge 10 on the left and right sides on the front plate 2a side (FIG. 1). As shown in FIG. 7, the fixed base 45 is each arrange | positioned at the baseplate 2c. A pair of fixed brackets 46 are fixedly erected on each fixed base 45 so as to oppose left and right in the door width direction. An upper bracket 47 is disposed between the left and right fixed brackets 46. As shown in FIG. 9, the upper bracket 47 has left and right side walls 47b bent continuously from the upper wall 47a, and the left and right side walls 47b and the left and right fixing brackets 46 have their base ends (FIG. 10). , The base 1a side of the waterproof door 1) is pivotally supported by the support shaft 48 so as to be able to swing relative to the direction in which the door tilts. A lower bracket 49 is disposed between the left and right side walls 47 b of the upper bracket 47. As shown in FIG. 9, the lower bracket 49 has left and right side walls 49b bent continuously from the lower wall 49a, and is fixed to the fixed bracket by the support shaft 48 at the base ends of the left and right side walls 49b of the lower bracket 49. It is pivotally supported with respect to 46 so that it can swing in the direction in which the door is raised and lowered.

  Between the upper wall 47a of the upper bracket 47 and the lower wall 49a of the lower bracket 49, as shown in FIG. The standing-up assisting biasing member 50 is a torsion coil spring, one end 50a of which is fixed in contact with the lower wall 49a of the lower bracket 49, and the other end 50b can be in contact with the upper wall 47a of the upper bracket 47. It has become. A guide bar 51 is fitted to the other end 50 b of the torsion coil spring 50, and guide rollers 53 a and 53 b are rotatably provided at the tip of the guide bar 51 via a roller guide 52. The guide rollers 53a and 53b can roll on an upper guide surface 54a and a pair of lower guide surfaces 54b of the guide rail 54, which are attached to the back surface of the waterproof door 1 and have a rectangular cross section that opens downward. The torsion coil spring 50 can apply a biasing force in the standing direction to the waterproof door 1 via the guide roller 53 a and the guide rail 54.

  As shown in FIG. 7, a control mechanism 55 that controls the swinging motion of the upper and lower brackets 47 and 49 is interposed between the fixed bracket 46 and the upper and lower brackets 47 and 49. The control mechanism 55 includes a long hole 49c formed in the side wall 49b of the lower bracket 49 and a detachment opening that opens in the tilting direction of the waterproof door 1 in a shape substantially the same as the long hole 49c formed in the side wall 47b of the upper bracket 47. The engagement / disengagement groove 47c provided with 47d, the control cam groove 46a formed in the fixed bracket 46, and the cam pin 56 are configured such that the cam pin 56 passes through the engagement / disengagement groove 47c, the long hole 49c, and the control cam groove 46a. Yes. The control cam groove 46a includes a separation restricting cam surface 46b, a fixed cam portion 46c, and a guide portion cam 46d. The separation restricting cam surface 46b is formed in an arc surface centered on the support shaft 48, and the fixed cam portion 46c is When the upper and lower brackets 47 and 49 are at a predetermined standing angle position C, the engagement / disengagement groove 47c and the long hole 49c are substantially continuous with the separation restriction cam surface 46b and extending obliquely upward toward the radially outer side from the separation restriction cam surface 46b. It is formed to match. The guide cam 46d faces the separation regulating cam surface 46b and is formed continuously with the fixed cam 46C. When the upper and lower brackets 47 and 49 are in the vicinity of a predetermined standing angle position C, the cam pin 56 is fixed to the fixed cam 46. Guide to 46C.

  The separation regulating cam surface 46b allows the cam pin 56 to be slidable when the waterproof door 1 is located from the lying position A to the predetermined standing angle position C. The cam pin 56 is positioned at the engagement holding portion 47e on the lower bracket 49 proximal end side of the long hole 49c and the upper bracket 47 proximal end side of the engagement / disengagement groove 47c. When the cam pin 56 is positioned between the separation restricting cam surface 46b and the engagement holding portion 47e, the upper bracket 47 is integrally fixed at a position close to the lower bracket 49 as shown in FIG. The upper and lower brackets 47 and 49 are held in a compressed state.

  When the upper and lower brackets 47 and 49 are rotated together with the waterproof door 1 to a predetermined standing angle position C, the fixed cam portion 46c is pushed by the guide cam 46d from the separation regulating cam surface 46b and the fixed cam portion 46c is fixed cam. The lower bracket 49 is fixed to the fixed bracket 46 so as not to be able to swing in the standing direction of the waterproof door 1. When the cam pin 56 is fitted into the fixed cam portion 46 c, the cam pin 56 is restricted from being lowered from the fixed cam portion 46 c by the support surface 47 f of the upper bracket 47. At this time, the cam pin 56 is located in the separation opening 47d of the engagement / disengagement groove 47c and releases the fixation to the lower bracket 49 of the upper bracket 47 (FIG. 11). As described above, when the waterproof door 1 swings from the lying position A to the predetermined standing angle position C, the control mechanism 55 is in a state where the upper bracket 47 is fixed at a position close to the lower bracket 49. When the lower guide surface 54b comes into contact with the guide roller 53b, the waterproof door 1 swings integrally with the lower bracket 49 via the torsion coil spring 50. Further, since the control mechanism 55 releases the fixing of the upper bracket 47 to the lower bracket 49 and fixes the lower bracket 49 to the fixing bracket 46 at a predetermined standing angle position C, the torsion coil spring 50 is released from the compressed state and the waterproof door 1 is released. An urging force will be given to.

  Next, the operation of the waterproof door device 9 will be described. The waterproof door 1 provided in the case 2 embedded in the floor F of the entrance / exit of a building or a parking lot is normally in a state of closing the upper opening of the case 2 (falling position A). As shown in FIG. 1, the lock bar 23 of the lock device 20 is laid down and stored in the case 2. When there is a risk of flooding at the entrance / exit of a building or a parking lot due to heavy rain or the like, the front end 1b of the waterproof door 1 is swung in the standing direction from the lying position A by a manual operation by an operator. At that time, the base 1a of the waterproof door 1 moves backward away from the door frame 4 by the link operation of the first and second links 14 and 15 (FIG. 3). At this time, as described above, the gas damper 43 applies a biasing force to the waterproof door 1 and presses the movable base 12 of the hinge 10 toward the base plate 18. Further, since the torsion coil spring 50 is held in a compressed state between the upper and lower brackets 47 and 49 integrated by the control mechanism 55, the urging force is not applied to the waterproof door 1, and the upper and lower brackets 47 and 49 are applied. At the same time, it swings integrally with the waterproof door 1.

  When the waterproof door 1 reaches the predetermined standing angle position C, as shown in FIG. 3, the link operation fixing portion 14a of the first link 14 comes into contact with the contact portion 12a, and the first and second links 14, 15 The link operation is fixed. At this time, the piston rod 43a of the gas damper 43 can no longer extend, and the waterproof door 1 and the movable base 12 are not biased. Further, the control mechanism 55 releases the fixing of the upper and lower brackets 47, 49, and fixes the lower bracket 49 to the fixing bracket 46 at a predetermined standing angle position C (FIG. 11). The torsion coil spring 50 urges the waterproof door 1 in the waterproof door standing direction from above the lower bracket 49 fixed at the predetermined standing angle position C. When the waterproof door 1 is further swung, the base 1a of the waterproof door 1 is rotated toward the door frame 4. When the waterproof door 1 is in the standing position B, the operator engages the tip of the lock bar 23 with the slide member 31. 2 and 3, the slide member 31 is moved to the base 1a side in the vertical direction of the door by rotating the handle 36 in the standby position parallel to the waterproof door 1 shown in FIGS. 2 and 3, and the waterproof door 1 is pressed against the door frame 4. Inundation from the doorway is prevented (FIG. 4).

  Further, when the waterproof door 1 is tilted, it resists the biasing force of the torsion coil spring 50 that biases from the predetermined standing angle position C to the standing position B and the gas damper 43 that biases from the lying position A to the predetermined standing angle position C. Then, the waterproof door 1 can be tilted, so that the waterproof door 1 can be laid down with a smaller urging force than when a standing assisting urging member for urging from the lying position A to the standing position B is provided.

  When the waterproof door device 9 is erected, when the waterproof door 1 is erected, the urging force of the auxiliary assisting device 8 does not act on the waterproof door 1, that is, necessary to erect the waterproof door 1 without the auxiliary assisting device. The effective operating force Fb changes as shown in FIG. As shown in FIG. 13, the operating force Fb increases instantaneously at a predetermined standing angle position C (set to 45 ° in the present embodiment). This is because the center of swinging of the waterproof door 1 from the lying position A to the predetermined standing angle position C is a four-joint link comprising the first and second links 14, 15, the movable base 12 and the door mounting member 16. 3 is the instantaneous center O1 that moves on the curve L indicated by the alternate long and short dash line in FIG. 3, and the support shaft 13 is set as the center of swing O2 from the predetermined standing angle position C. Up to the angular position C, the instantaneous center O1, which is the center of swinging that has moved from the support shaft 13 on the distal end portion 1b side of the waterproof door 1, is the predetermined upright angular position C of the first and second links 14,15. This is because it moves to the center O2 of the oscillation by fixing.

  The door mounting member for the movable base 12 when the waterproof door 1 in the four-joint link including the first and second links 14 and 15 of the hinge 10, the movable base 12 and the door mounting member 16 reaches the predetermined standing angle position C. 16, that is, the instantaneous center of the waterproof door 1 with respect to the movable base 12 is O1a shown in FIG. When the waterproof door 1 reaches a predetermined standing angle position C, the distance between the gravity center G of the waterproof door 1 and the instantaneous center O1a is L1a, and the distance between the gravity center G of the waterproof door 1 and the swing center O2 is L2. is there. At this time, the distance between the center of gravity G of the waterproof door 1 and the distal end portion 1b of the waterproof door 1 on which the operator's operating force acts is L3, and the distance between the instantaneous center O1a and the distal end portion 1b on which the operating force acts. Is L1a + L3, and the distance between the center O2 of the swing and the tip 1b on which the operating force acts is L2 + L3. Assuming that the weight of the waterproof door 1 is g, the instantaneous center O1a, and the operating force with respect to the swing center O2 are Fb1 and Fb2, the balance of the moment of the waterproof door 1 weight g around the instantaneous center O1a and the moment of the operating force Fb1 is Fb1 = (L1a × g) / (L1a + L3), and Fb2 = (L2 × g) / (L2 + L3) from the balance of the moment of the weight of the waterproof door 1g around the swing center O2 and the moment of the operating force Fb2. . Fb2 / Fb1 = (L1aL2 + L2L3) / (L1aL2 + L1aL3), and as is clear from FIG. 3, since L1a <L2 and Fb2 / Fb1> 1, the center of oscillation becomes O2 from O1a at a predetermined standing angle position C. The operating force required to swing the waterproof door 1 increases from Fb1 to Fb2. Although the weight of the movable base 12 and the like is added when the waterproof door 1 swings with respect to the center O2 of the swing, the weight of the movable base 12 and the like is smaller than the weight of the waterproof door 1, and therefore the movable base 12 is movable in the above description. The increase in weight and the movement of the center of gravity due to the base 12 are ignored.

  In order to prevent the operating force from increasing from Fb1 to Fb2, the standing assistance device 8 causes the waterproof door 1 to swing in the standing direction, and the center of swinging of the waterproof door 1 at a predetermined standing angle position C is the instantaneous center O1a. The operation force is reduced by urging the waterproof door 1 by the gas damper 43 until the center of rotation O2 is changed to the swing center O2, and the center of swing of the waterproof door 1 swings from the instantaneous center O1a at a predetermined standing angle position C. When turning to the center of movement O2, the urging force of the torsion coil spring 50 is applied to the waterproof door 1 from the lower bracket 49 swinging to the predetermined standing angle position C integrally with the waterproof door 1. The operating force Fa when the waterproof door 1 is raised when the urging force is applied by the latter standing assisting means 44 is as shown in FIG. 13, and the torsion coil spring 50 is changed when the moment center O1a changes to the swing center O2. By applying an urging force in the standing direction of the waterproof door 1, a rapid increase in the operating force of the waterproof door 1 at a predetermined standing angle position C can be suppressed, and thereafter the operating force is applied by the urging force of the torsion coil spring 50. Reduce.

It is a top view which shows the waterproof door apparatus provided with the standing assistance apparatus of this invention. It is a side view which shows a hinge when a waterproof door is set to a fall position, and an initial standing assistance means. It is a side view which shows a hinge when a waterproof door is made into the predetermined standing angle position, and an initial standing assistance means. It is a side view which shows a hinge when a waterproof door is made into a standing position, and an initial standing assistance means. FIG. 3 is a V view of FIG. 2. It is the VI-VI sectional view taken on the line of FIG. It is a side view of a latter-stage standing up assistance means. It is a top view of a latter-stage standing up assistance means. FIG. 8 is a IX view of FIG. 7. It is a side view which shows the latter-stage standing-up assistance means when a waterproof door is set to a lying position. It is a side view which shows the latter stage standing assistance means when a waterproof door is made into the predetermined standing angle position. It is a side view which shows the latter stage standing assistance means when a waterproof door is made into a standing position. It is explanatory drawing which shows the operation force required to make a waterproof door stand.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waterproof door 1a Base 1b Tip part 4 Door frame 8 Standing assistance device 9 Waterproof door device 10 Hinge 11 Fixed base 12 Movable base 13 Support shaft 14 First link 15 Second link 16 Door mounting member 43 Initial standing assistance means (gas damper)
44 Late Standing Auxiliary Means 46 Fixed Bracket 46a Control Cam Groove 46b Separation Restriction Cam Surface 46c Fixed Cam Portion 47 Upper Bracket 47b Side Wall 47c Engaging / Removing Groove 47d Release Opening 47e Engagement Holding Portion 48 Support Shaft 49 Lower Bracket 49b Side Wall 49c Long Hole 50 Standing-assist urging member (torsion coil spring)
55 Control mechanism 56 Cam pin A Lodging position C Predetermined standing angle position

Claims (8)

  The base of the waterproof door is configured to be rotated toward the door frame while retreating the base of the waterproof door away from the door frame when the waterproof door is raised from the lying position that closes the upper opening of the storage recess. In the waterproof door device having the standing assistance device for assisting the standing up of the waterproof door while connecting the waterproof door hinge provided in the storage recess, the standing assistance device rotates the waterproof door in the standing direction from the lying position, The waterproof door is provided with a later-stage standing-up assisting means for urging the waterproof door in the standing direction from a predetermined standing angle position where the waterproof door base moves from a backward movement away from the door frame to a rotation approaching the door frame. Door device.   The standing-up assisting biasing member included in the latter-stage standing-up assisting means rotates integrally with the waterproof door from the fall position of the waterproof door to a predetermined standing angle position, and applies a biasing force from the predetermined standing angle position. The waterproof door device according to claim 1.   The latter-stage standing-up assisting means pivotally supports the lower bracket on the fixed bracket via a support shaft so as to be swingable in the door tilting direction, and the lower bracket is provided with a standing-up assisting biasing member, and the upper bracket is mounted on the support shaft. The stand-up assisting biasing member can be held in a compressed state at a position close to the lower bracket so that the upper bracket can be swung, and the stand-up assisting biasing member is waterproof so that the waterproof door can stand up with the biasing force. A control mechanism is connected between the fixed bracket and the upper and lower brackets to control the swinging motion of the upper and lower brackets until the waterproof door reaches the predetermined standing angle position from the lying position. While the upper bracket is fixed in the proximity position, it is swung together with the waterproof door in the waterproof door standing direction together with the lower bracket. Waterproof door apparatus according to claim 1 or 2, wherein it is configured so that the lower bracket is fixed to the fixed bracket while unpin for bets.   The control mechanism includes an elongated hole formed in the side wall of the lower bracket, an engagement / disengagement groove provided with a separation opening that opens in the tilting direction of the waterproof door in a shape substantially the same as the elongated hole formed in the sidewall of the upper bracket, It is composed of a control cam groove formed on the fixed bracket and a cam pin. The cam pin is inserted into the engagement / disengagement groove, the long hole and the control cam groove, and from the fall position of the waterproof door to a predetermined standing angle position, The upper and lower brackets are fixed integrally by positioning the cam pin at the engagement holding portion of the engagement / disengagement groove by the separation restriction cam surface, and the cam pin is fixed to the control cam groove from the separation restriction cam surface of the control cam groove at a predetermined standing angle position. 4. The waterproof structure according to claim 3, wherein the lower bracket is fixed to the fixed bracket by moving to the fixing portion, and the fixing to the lower bracket of the upper bracket is released at the disengagement opening of the engagement / disengagement groove. Apparatus.   5. The stand-up assisting device includes initial stand-up assisting means for urging the waterproof door in a standing-up direction from a lying position to a predetermined standing angle position. Waterproof door device.   A hinge is pivotally supported on a fixed base fixedly arranged on a fixed portion so that the tip of the movable base can swing by a support shaft, and the lower end of the first link is rotatably connected to the movable base. The lower end portion of the second link is pivotally connected to a position away from the connecting portion of the first link and the movable base, and the door mounting member integrally fixed to the waterproof door is connected to the first and second links. The upper end is pivotally attached, and the movable base is restricted from swinging in the direction away from the fixed base from the fall position of the waterproof door to the predetermined standing angle position. 6. The waterproof door device according to claim 5, wherein the initial standing assisting means is disposed between the distal end portion of the waterproof door and a position away from the support shaft of the movable base so as to release the swing restriction.   The waterproof door device according to claim 5 or 6, wherein the standing-up assisting biasing member of the latter-stage standing-up assisting means is a torsion coil spring.   The waterproof door device according to any one of claims 5 to 7, wherein the initial standing assisting means is a gas damper.

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