JP3866565B2 - Door open / close delay mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention delays the rotation switching operation from the open position to the close direction in the door opening / closing mechanism that opens and closes the door, particularly in the aspect of rotating the door in the open position direction against the biasing force. The door opening / closing delay mechanism.
[0002]
[Prior art]
FIG. 10 schematically shows a vending machine. In the vending machine 30 shown in the figure, for example, when a coin is inserted into a coin slot 31, and a selection button 32 corresponding to a favorite beverage is pressed, the cup C falls in the take-out portion 33, and the designated beverage is transferred to the cup. Poured into C. The purchaser recognizes that the beverage has been injected into the cup visually or through a display unit, and then rotates the door 34 closing the take-out part 33 to the open position and takes out the cup C. Reference numeral 35 denotes a coin return port, and reference numeral 36 denotes a reset button.
[0003]
By the way, this type of door 34 protects dust and the like from entering the inside of the extraction portion 33. Structurally, the door 34 is rotatably supported by the frame portion 36 constituting the extraction portion 33 with the pivot as a fulcrum, and the opening of the frame portion 36 is closed by a biasing force of a biasing means (not shown). It is rotated in the direction. Accordingly, the door 34 is rotated from the closed position toward the open position against the urging force, and when the hand is released from the door 34, the door 34 is rotated again to the closed position. It should be noted that the door 34 is likely to hit a hand or feel uncomfortable when it is suddenly turned in the direction of the closed position by the biasing means, and therefore various braking mechanisms (for example, variable speed rotation disclosed in Japanese Patent Laid-Open No. Hei 8-296665). The damper may be braked so that the rotation speed becomes slow.
[0004]
[Problems to be solved by the invention]
The door 34 as described above is inconvenient in terms of the following points even if the rotation speed is braked by the above-described braking mechanism. That is, in the example of the vending machine 30 described above, when the cup C or the like is taken out from the take-out portion 33, the door 34 must be pushed to the open position with one hand and the cup C must be taken out with the other hand. For this reason, the purchaser is obliged to use both hands, and it is inconvenient that he / she must purchase his / her hands after securing his / her hand when he / she is bringing an infant or carrying a baggage. In addition, with respect to such problems, the door opening / closing mechanism can be provided by opening and closing the door 34 in an electrically controlled manner such as a drive motor, and the door 34 is ready for the cup C or the like (beverage liquid is poured). ) Is automatically driven to the open position, and it is possible to automatically detect the completion of taking out the cup C etc. by hand and drive it to the closed position automatically. It tends to be a factor such as becoming large and a hand being caught in the event of a failure.
[0005]
The present invention has been developed from the above background. Its purpose is to be applied to the door as described above, so that the door is mechanically kept at the open position for a predetermined time, so that it is inexpensive, versatile and safe with respect to the electric control type described above, The object is to realize a door opening / closing delay mechanism that can be easily deployed according to the application.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention, as illustrated in FIGS. 1 to 9, supports the door 2 so as to be rotatable with respect to the frame portion 1 on the main body side with the pivot 3 as a fulcrum. It is used when the opening of the frame portion 1 is rotated from the closed position to the opening position direction against the urging force of the urging means 4, and is provided on the frame portion 1 side to provide the cam groove 13. The formed cam body 5, the rotating gear 9 attached to the frame portion corresponding to the cam body 5, the pin 18a tracing the cam groove 13, and the tooth portion 15 meshing with the rotating gear 9 are provided. The movable body 6 provided so as to be rotatable in conjunction with the door 2 and slidable in the axial direction with respect to the cam body 5 through the fitting of the cam groove 13 and the pin 18a, and the movable body. A spring member 7 that urges the cam body 5 away from the cam body 5, and the door 2 is in the closed position. When the rotating operation is performed in the open position direction, the tooth portion 15 and the rotating gear 9 are engaged with each other, and the rotating body is rotated while the movable body is slid in the axial direction. After maintaining the open position until the meshing is released, it is rotated in the direction of the closed position by the urging force of the urging means 4.
[0007]
In the door opening / closing delay mechanism described above, the movable body 6 is attached to the frame-side cam body 5 by fitting the pin 18a into the cam groove 13, and is attached in a direction away from the cam body 5 by the urging force of the spring member 7. As a result, the pin 18a is moved to a fixed position of the cam groove 13 (a groove position corresponding to the closed position of the door). When the door 2 is rotated from the closed position to the open position as in the example of FIG. 6, the movable body 6 can be rotated in conjunction with the door, so the pin 18 a also moves in the cam groove 13. By this movement, the movable body 6 is slid (upward) with respect to the cam body 5 against the bias of the spring member 7. Then, as shown in the example of FIG. 7, the movable body 6 meshes the tooth portion 15 with the rotating gear 9 on the frame portion side, and in the meshed state, the rotating gear 9 is rotated by the biasing force of the spring member in the axial direction (downward). Is slid. The door is maintained in the open position while the tooth portion 15 is engaged with the rotary gear 9. In this process, the door 2 tries to rotate in the direction of the closed position by the urging means 4, but the rotation is blocked by the relationship between the pin 18 a and the cam groove 13. Then, when the movable body 6 is slid in the axial direction and the tooth portion 15 releases the meshing with the rotary gear 9, the door 2 is rotated in the closed position direction by the urging force of the urging means 4 as shown in FIG. Is done. In other words, this mechanism feature is that the door 2 is only operated to rotate from the closed position to the open position against the urging force of the urging means 4, and the engagement between the tooth portion 15 and the rotating gear 9 is performed. The open position (open state) is automatically maintained, and thereafter the door is rotated in the direction of the closed position by the biasing force of the biasing means 4. For this reason, the present invention can delay the rotation switching operation from the open position to the closed position for the door urged in the closing direction with only a few mechanical members and mechanical movement. This delay degree, that is, the time for keeping the door in the open position, can be arbitrarily set by using the gear relationship between the tooth portion and the rotating gear, the use of the braking damper of claim 3 and the like.
[0008]
The present invention as described above is more preferably embodied as in claims 2-5.
First, when the door 2 is rotated from the closed position to the half-open position in the middle of reaching the open position, the cam groove 13, the pin 18 a and the spring member 7 are opened from the half-open position. It is the structure rotated to a position. This is because before the door 2 reaches the open position as in the embodiment, that is, when the door is rotated by an appropriate angle (half-open position) in the open position direction, it is automatically held in the open position and the open position thereafter. Realize the movement to turn to the closed position, and improve the usability and performance.
Second, the rotary gear 9 is mounted on the output shaft of the braking damper 8. The damper 8 brakes the rotation of the rotary gear 9 to make it easy to set a longer time for keeping the door 2 in the open position. In short, this is an example that allows the freedom of delay operation of the present invention to be expanded.
Third, the cam body 5 forms the cam groove 13 around a cylindrical shape, and the cam groove 13 includes a first groove portion 13a corresponding to a half-open position from the closed position of the door, and the half-open position of the door. The second groove portion 13b corresponding to the open position from the position, the third groove portion 13c maintaining the open position of the door, and the fourth groove portion 13d corresponding to the closed position from the open position of the door. This identifies the cam body 5 of the embodiment and the cam groove configuration for obtaining the delayed operation of claim 2. However, in the present invention, for example, the door 2 may be rotated to the open position, and thereafter held at the open position and rotated to the closed position. In this case, as the cam groove, a first groove portion corresponding to the open position from the closed position of the door, a second groove portion maintaining the open position of the door, and a third groove portion corresponding to the closed position from the open position of the door. It is almost composed of.
Fourth, the movable body 6 includes the tooth portion 15 and a groove portion 19 slidably fitted to a part of the door around a substantially cylindrical shape into which the cam body 5 can be inserted. The pin 18a is formed so as to protrude from the outside of the cylinder into the cylinder. This specifies the movable body 6 as a form example. However, the movable body may be, for example, a cylinder having a C-shaped cross section, and is variously deformed according to the cam body shape, the door shape, or the like.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a use state where a door opening / closing delay mechanism is applied, wherein FIG. 1 (a) is a schematic external view at the closed position of the door with the frame opening closed, and FIG. 1 (b) is a schematic external view at the open position of the door. It is. FIG. 2 is a schematic exploded view showing the relationship of each member of the door opening / closing delay mechanism. 3A and 3B show the cam body of FIG. 2, wherein FIG. 3A is a front view, FIG. 3B is a right side view, FIG. 3C is a top view, and FIG. 3D is a bottom view. FIG. 4 shows the movable body of FIG. 2, (a) is a front view of the door in the closed position, (b) is a right side view thereof, (c) is a top view, and (d) is a bottom view. is there. 5 is an enlarged cross-sectional view of the main part of the cam body and the movable body. FIG. 5A is a cross-sectional view taken along line AA in FIG. 3B, and FIG. FIG. 4C is a cross-sectional view taken along the line CC, and FIG. 4D is a cross-sectional view taken along the line DD in FIG. 6 to 9 show the operation of the door opening / closing delay mechanism.
[0010]
(Overall Outline) In the door opening / closing delay mechanism of the present invention, as shown in FIGS. 1 and 2, the door 2 is assembled to the frame 1 on the main body side so as to be rotatable about the pivot 3 as a fulcrum. Is biased in the direction of the closed position (same as the closed state) for closing the opening of the frame portion 1 by the coil spring 4 as the biasing means, and the open position (open state) against the biasing force of the coil spring 4 ) Is suitable when it is desired to keep the door 2 in the open position for a predetermined time (for example, several seconds to several tens of seconds). Here, for example, the frame 1 is assumed to have an aspect in which the article outlet 33 of the vending machine 30 illustrated in FIG. 10 is partitioned. Therefore, the frame part 1 is designed according to the use on the main body side, and for example, a notch part 1f as shown by an imaginary line in FIG. The frame 1 in the form defines the inside by an upper surface 1a with one side raised one step, both side surfaces 1b and 1c, a lower surface 1d, and a back surface 1e. A locking hole or the like corresponding to the pivot 3 is provided on the upper surface 1a. The side surface 1b is provided with a recess 1g that is recessed from the front to the back. The side surface 1c is provided with a notch 1h for gripping the door 2. The lower surface 1d is provided with a locking hole corresponding to the pivot 3 and a stopper convex portion 1j for locking the door 2 in the closed position. On the other hand, the door 2 has a shape corresponding to the front opening of the frame portion 1 and lacks a portion including the cylindrical portion 2a provided on the side edge on the base end side and the upper side of the cylindrical portion 2a. A corner 2b is formed. The door 2 passes a pivot (same as a shaft) 3 through the cylindrical portion 2a, and the upper and lower ends 3a, 3b of the pivot 3 are fixed to the locking holes on the upper surface 1a and the locking holes on the lower surface 1d. Therefore, the pivot 3 is supported so as to be rotatable. In this case, one end 4a is locked to the door 2 side and the other end 4b is connected to the lower surface 1d in a state where the coil spring 4 is fitted to the cylindrical portion defined by the lower slit 2c below the cylindrical portion 2a. The door 2 is urged to rotate counterclockwise in the closed position, that is, in the form, by being locked in a rib or hole (not shown) protruding from the door. However, the rotation support and biasing structure of the door 2 may be any other known pivotal support structure or biasing structure. Hereinafter, after describing each member which comprises the door opening / closing delay mechanism in detail, it mentions the operation | movement.
[0011]
(Door Open / Close Delay Mechanism) In this embodiment, the cam body 5 provided on the frame 1 side, the movable body 6 slidably attached to the cam body 5, and the movable body 6 are attached in a direction away from the cam body 5. It is composed of a spring member 7 to be biased and a braking damper 8 attached to the recess 1g of the frame portion 2. The cam body 5 and the movable body 6 are resin molded products, but other materials may be used. The spring member 7 is an example of a coil spring, but it may be a plate spring or a torsion spring.
[0012]
The cam body 5 includes a mounting plate portion 11 and a tube portion 12, and a cam groove 13 is formed around the tube portion 12. The mounting plate part 11 has a plurality of mounting holes 11a and through holes 11b, is positioned on the upper surface 1a, and is fixed by screws or the like using the mounting holes 11a. As shown in FIG. 5C, the inside of the cylindrical portion 12 has a small cylindrical portion 12a that opens on the lower side and is provided on the upper side and communicates with the through hole 11b. The small cylinder part 12a can support the upper part of the spring member 7 put in the cylinder part 12 on the outer periphery. As shown in FIGS. 3 and 6, the cam groove 13 is provided with a substantially quadrangular convex portion 14 on the outer periphery of the cylindrical portion 12, and a first groove portion 13 a formed along each piece of the convex portion 14, It is comprised from the 2 groove part 13b, the 3rd groove part 13c, and the 4th groove part 13d. The first groove 13a is inclined at a relatively acute angle from the bottom to the top, and corresponds to the halfway position from the closed position of the door 2 to the open position, that is, the half open position. The second groove portion 13b is inclined downward from above the first groove portion 13a at a gentler angle than the first groove portion 13a, and corresponds to the open position from the half-open position of the door 2. The third groove 13c extends vertically downward from the tip of the second groove 13b and corresponds to a portion that maintains the open position of the door 2. As shown in FIG. 5B, the fourth groove portion 13d has an approximately 180 degree arc shape, connects the lower portions of the first groove portion 13a and the third groove portion 13c, and moves from the open position of the door 2 to the closed position. It corresponds. Specifically, in FIG. 7B, the depth of the fourth groove portion 13d (the height of the groove bottom surface) is that the half groove portion 13e located on the third groove portion 13c side is formed on the flat groove surface. On the other hand, the half groove portion 13f located on the first groove portion 13a side is formed on the inclined groove surface, and a step (the pin 18a extends from the first groove portion 13a to the half groove) between the half groove portion 13f and the first groove portion 13a. It is formed at a level difference that prevents the part 13f from inadvertently returning to the side. Although the above cam body 5 is configured to be retrofitted to the upper surface 1a, it may be formed integrally with the corresponding portion of the frame portion 1. In that case, the mounting plate portion 11 is omitted.
[0013]
The movable body 6 has a substantially cylindrical shape having an inner diameter in which the cylindrical portion 12 is loosely fitted and has a lower end surface 6a. The movable portion 6 protrudes from the lower end surface 6a and the tooth portion 15 and the pin support portion 16 protruding from the outer periphery. The door connecting portion 17 is integrally formed. Inside the lower end surface 6a, as shown in FIG. 5 (d), a small tube portion 6b is provided in the tube so that the pivot 3 can pass through the inner diameter of the small tube portion 6b in a skewed state. The small cylinder portion 6b can support the lower portion of the spring member 7 inserted therein on the outer periphery. The tooth portion 15 is provided on a part of the rib 15a which is on the upper side of the cylinder and protrudes vertically. The tooth portion 15 is a rack composed of a plurality of teeth and meshes with a rotary gear 9 of a damper 8 described later. The support portion 16 forms a mounting hole 16a penetrating inside and outside the cylinder. A pin 18a is disposed in the mounting hole 16a so as to protrude into the cylinder. The pin 18a is made of metal and traces along the cam groove 13 at the tip. In this structure, the pin 18a is slidably disposed in the mounting hole 16a, and is linked to a spring member 18c disposed between the adjustment screw 18b mounted on the inlet side of the mounting hole 16a. One end of the spring member 18c is locked to the rear end of the pin 18a, and the urging force presses the pin 18a to the normal position in FIG. 5D, and the pin 18a resists the urging force in the retracting direction. Make it slidable. The adjusting screw 18b variably adjusts the protruding amount of the pin 18a into the cylinder via the spring member 18c. On the other hand, the connection part 17 is comprised from the pair of clamping piece 17a couple | bonded with the lower end surface 6a. The movable body 6 is provided with a vertical slit 19 that is continuous with the gap between the sandwiching pieces 17a and 17a.
[0014]
The damper 8 is attached to the concave portion 1g of the frame portion 1 with a screw or the like. The structure has a rotary gear 9 mounted on an output shaft, which uses a known rotary oil damper and receives the resistance of hydraulic oil. In relation to the cam body 5, the rotary gear 9 is positioned and fixed in the recess 1 g so as to correspond to a predetermined groove portion of the cam groove 13. In relation to the movable body 6, it is essential that the rotation gear 9 has a pitch corresponding to the teeth of the tooth portion 15. In the present invention, the braking damper 8 is not used, and only a rotating gear (same as a pinion corresponding to the tooth portion 15) in which the braking function portion is omitted can be used. In that case, the rotating gear is attached to the recess 1g via a support shaft or the like.
[0015]
The cam body 5, the movable body 6, and the spring member 7 are incorporated at the same time as the door 2 is attached to the frame portion 1, but the damper 8 may be before or after the door 2 is attached to the frame portion 1. The assembly procedure is such that, for example, the spring member 7 is accommodated in the movable body 6 and the cylindrical portion 12 of the cam body 5, the cylindrical portion 12 is pushed into the movable body 6, and the pin 18a is fixed to the mounting hole 16a. To do. Then, the movable body 6 is linked so that it cannot be separated through the fitting of the pin 18 a and the cam groove 13. In this state, the movable body 6 is slid to the lower side of the cylindrical portion 12 by the urging force of the spring member 7, but the relationship between the pin 18a and the cam groove 13, that is, the pin 18a is fitted in the fourth groove portion 13d. Therefore, it cannot be removed from the cylindrical portion 12. Next, the movable body 6 is disposed on the door 2. In this case, the movable body 6 sandwiches the lower portion of the upper corner portion 2b of the door 2 that is stepped with respect to the door 2 between the sandwiching pieces 17a, and the vertical edge portion of the upper corner portion 2b. It arrange | positions in the state fitted to the vertical slit 19. FIG. In this state, the movable body 6 is rotated integrally with the door 2 and is slidable in the axial direction with respect to the door 2. Subsequently, the door 2 is assembled to the frame portion 1 via the pivot 3 as described above. That is, for example, the pivot 3 has the upper end 3a passed through the cylindrical portion 2a of the door 2 and the hole of the lower end surface 6a of the movable body 6 through the small cylindrical portion 6b, the small cylindrical portion 12a of the cam body 5, and the through hole 11b. The lower end 3b is locked in the locking hole in the lower surface 1d. In this case, the coil spring 4 is disposed below the cylindrical portion 2a as described above, one end 4a is locked to the door 2 side, and the other end 4b is locked to a rib or the like on the lower surface 1d. When the door 2 is assembled to the frame portion 1 as described above, the door 2 is rotationally biased to the closed position where the opening of the frame portion 1 is closed by the biasing force of the coil spring 4 as shown in FIG.
[0016]
(Operation) Next, detailed operation of the above door opening / closing delay mechanism will be described in detail with reference to the schematic diagrams of FIGS. In each figure, (a) shows the position of the door 2 as viewed from above the frame portion 1, (b) shows the relationship between the cam groove 13 and the pin 18a in the (a) state, and (c) shows (a). The relationship between the movable body 6, the cam body 5 (cylinder portion 12), and the rotating gear 9 of the damper 8 in the state is shown. Moreover, the cam groove 13 of (b) is the top view which expanded the above-mentioned 1st-4th groove part 13a-13d.
[0017]
FIG. 6 shows a state in which the door 2 is rotated in the opening direction against the biasing force of the coil spring 4 from the closed position described above. In this turning process, the pin 18 a traces the first groove 13 a in conjunction with the turning of the door 2, and the movable body 6 then turns in conjunction with the door 2 and compresses the spring member 7. The cylinder part 12 of the cam body 5 slides and rises. When the door 2 is turned to the open position, that is, to the half-open position, the pin 18a enters the second groove portion 13b from the first groove portion 13a, and thereafter is automatically turned to the open position. That is, in this embodiment, the door 2 is manually rotated from the closed position by an angle L1 in FIG. This angle L1 is about 2/3 of the angle L3 in FIG. 9 where the door 2 is rotated from the closed position to the open position.
[0018]
FIG. 7 shows a state immediately before the door 2 is rotated from the half-open position to the open position in FIG. In this rotation process, when the pin 18a enters the second groove 13b, the movable body 6 is slightly slid downward from the state of FIG. 6 by the urging force of the spring member 7, and the reaction force received at that time causes the pin 18a to slide. Are traced along the second groove 13b that is inclined downward. The movable body 6 is rotated in the open position direction along the second groove portion 13 b, and the lower teeth of the tooth portions 15 mesh with the rotating gear 9 of the damper 8. The door 2 is rotated in conjunction with the movable body 6 to the open position shown in FIG. 7 (a state where the door 2 is fully opened). An angle L2 in FIG. 7 is an angle from the half-open position in FIG. 6 to the open position in FIG. 7, and is a range in which the door 2 is automatically rotated in the open position direction.
[0019]
From the state of FIG. 7, the movable body 6 is slid in the axial direction, that is, downward by the biasing force of the spring member 7, and the pin 18a traces the third groove 13c downward as shown in FIG. At that time, the tooth portion 15 moves downward while rotating the rotary gear 9, and the movable body 6 and the door 2 are not rotated, that is, kept in the open position. The door 2 is held in the open position until the tooth portion 15 rotates the rotating gear 9 and releases the meshing with the rotating gear 9, and the pin 18a moves the third groove portion 13c from the position shown in FIG. This corresponds to the movement to the position of FIG. The degree of holding or delay of the door 2 is also proportional to the braking force of the damper 8 acting on the rotating gear 9 that meshes with the tooth portion 15.
[0020]
FIG. 8 shows a state immediately before the tooth portion 15 releases the meshing with the rotating gear 9. In this state, the pin 18a is located at the boundary between the third groove portion 13c and the fourth groove portion 13d, the movable body 6 is slid to the lower side of the cylindrical portion 12 of the cam body 5, and the door is placed in the vertical slit 19 described above. 2 corresponds to the upper corner 2b. Then, when the pin 18a enters the fourth groove 13d, the door 2 is rotated from the open position to the closed position by the urging force of the coil spring 4 this time. At the time of this rotation, the movable body 6 is also rotated in the same direction in conjunction with it. FIG. 9 shows a state after the door 2 is rotated from the open position to the closed position in FIG. The pin 18a traces the fourth groove 13d in conjunction with the rotation of the door 2 (and the movable body 6) in the closed position direction, and at the same time the door 2 hits the closed position, that is, the stopper convex portion 1j. The end point of the groove 13d is reached.
[0021]
In the door opening / closing delay mechanism of the present invention, the main member is the two points of the cam body 5 and the movable body 6 as described above, and the door 2 is switched from the open position to the closed position by mechanical movement. You can delay the movement of time. For this reason, it is possible to greatly contribute to eliminating the problems described above and making it easier to use the vending machine. Moreover, the door opening / closing delay mechanism can easily and arbitrarily set the time for keeping the door 2 in the open position, that is, the degree of delay when switching the rotation from the open position to the closed position. For example, when it is desired to keep the door 2 in the open position for a longer time, the tooth portion 15 may be lengthened, the meshing pitch between the tooth portion 15 and the rotating gear 9 may be changed, or a damper 8 having a larger braking force may be used. Because.
[0022]
【The invention's effect】
As described above, the door opening / closing delay mechanism of the present invention is employed in, for example, a vending machine door, so that the purchaser can rotate the door in the open position direction with one hand to remove a cup or the like from the outlet. Since the purchased item can be taken out, the usability and the reliability of the device itself can be improved. In addition, the above-described electric control type is inexpensive and versatile, that is, it can be adopted without a design change on the main body side, and is excellent in safety. Moreover, according to the present invention, by rotating the door halfway to reach the open position as in claim 2, it is possible to automatically move to the open position, hold in the open position, and rotate to the closed position. Thus, it is possible to improve the usability by reducing the rotation operation angle in the opening position direction.
[Brief description of the drawings]
FIG. 1 is a schematic external view showing a door opening / closing delay mechanism according to an embodiment of the present invention in use.
FIG. 2 is a schematic exploded view showing the relationship of each member of the door opening / closing delay mechanism.
FIG. 3 is a detailed configuration diagram of a cam body constituting the door opening / closing delay mechanism.
FIG. 4 is a detailed configuration diagram of a movable body constituting the door opening / closing delay mechanism.
FIG. 5 is an enlarged cross-sectional view taken along each arrow line in FIGS. 3 and 4;
FIG. 6 is an operation diagram showing a state in which the door is rotated in the opening position direction.
FIG. 7 is a schematic operation diagram showing an initial state in which the door reaches an open position.
FIG. 8 is a schematic operation diagram showing a final state in which the door is maintained in the open position.
FIG. 9 is a schematic operation diagram showing a state after the door is returned to the closed position.
FIG. 10 is a schematic diagram for explaining a problem of a conventional door opening / closing mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Body side frame part 2 ... Door 3 ... Pivot 4 ... Coil spring (corresponding to urging means, 4a is one end, 4b is the other end)
5 ... Cam body (11 is a mounting plate part, 12 is a cylindrical part, 13 is a cam groove)
6 ... movable body (15 is a tooth part, 18a is a pin, 19 is a vertical slit corresponding to a groove part)
7 ... Spring member 8 ... Damping damper 9 ... Rotating gears 13a-13d ... 1st groove part-4th groove part

Claims (5)

The door is pivotally supported with respect to the frame portion on the main body side with the pivot as a fulcrum, and the door is rotated from the closed position to close the opening of the frame portion against the urging force of the urging means from the closed position to the open position direction. It is used when
A cam body provided on the frame portion side to form a cam groove, a rotating gear attached to the frame portion corresponding to the cam body, a pin that traces the cam groove, and the rotating gear mesh with each other. A movable body provided with a tooth portion, capable of rotating in conjunction with the door and slidable in the axial direction with respect to the cam body through fitting of the cam groove and a pin; and A spring member that biases in a direction away from the cam body,
When the door is rotated from the closed position to the open position, the sliding portion of the movable body in the axial direction is formed while rotating the rotation gear by forming an engagement between the tooth portion and the rotation gear. The door opening / closing delay mechanism is characterized in that the open position is maintained until the engagement is released with movement, and then the door is rotated in the direction of the closed position by the urging force of the urging means. The door is rotated from the half-open position to the open position by the operation of the cam groove, the pin, and the spring member when the door is rotated from the closed position to a half-open position in the middle of reaching the open position. The door opening / closing delay mechanism described in 1. The door opening / closing delay mechanism according to claim 1 or 2, wherein the rotating gear is mounted on an output shaft of a braking damper. The cam body forms the cam groove around a cylindrical shape, the cam groove having a first groove portion corresponding to the half-open position from the closed position of the door, and a first groove portion corresponding to the open position from the half-open position of the door. 4. The door opening / closing delay mechanism according to claim 2, comprising a second groove portion, a third groove portion that maintains the open position of the door, and a fourth groove portion that corresponds to the closed position from the open position of the door. The movable body is formed with the tooth portion and a groove portion slidably fitted to a part of the door around a substantially cylindrical shape into which the cam body can be inserted, and the pin The door opening / closing delay mechanism according to any one of claims 1 to 4, wherein the door opening / closing delay mechanism projects from the outside of the cylinder to the inside of the cylinder.

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