JP2007126832A - Self-closing type sliding door closer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-closing type sliding door closer which enables a pulling means to be surely wound around a pulley by keeping the pulling means in a tensioned state without loosening it, when a sliding door and the like are manually closed with rapidity. <P>SOLUTION: This self-closing type sliding door closer 1 comprises a spring unit 3, a damper unit 4, and the pulling means 20 capable of pulling the sliding door. The spring unit 3 is equipped with a spring pulley 6, and a spring 7, one end of which is fixed to a shaft 5 and the other end of which is fixed to the spring pulley 6 and which enables the storage of the pulling means by rotating the spring pulley 6 through the use of an elastic return force. The damper unit 4 is equipped with a damper 9, a damper pulley 10, a rotatable free pulley 11 for guiding the pulling means 20, and a separation means 18. An outer peripheral end surface 23 of the spring pulley 6 and an outer peripheral end surface 22 of the damper pulley 10 can be brought into contact with or engaged with each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a self-closing type sliding door closer that automatically closes a sliding door or the like by a pulling means such as a wire using the elastic return force of the mainspring, and more particularly, a closer having a damper function, and closing the door at a low speed. The present invention relates to a self-closing sliding door closer that closes.

  The self-closing type sliding door closer equipped with a damper is conventionally known, and the following two documents are introduced as an example. As shown in FIG. 11, the speed adjustment type mainspring unit described in Patent Document 1 includes a rotary damper 101 and a mainspring case 102 arranged in parallel on a bracket 100, and a wire reel 103 is rotatably accommodated inside the mainspring case 102. Has been. A wire 105 is wound around the wire reel 103 and a main gear 104 is provided. A gear 106 is also provided on the rotary damper 101. An idle gear 107 is arranged between the main gear 104 and the gear 106. Yes. The main gear 104 meshes with the idle gear 107, and the idle gear 107 meshes with the gear 106 of the rotary damper 101. When the sliding door is automatically closed, the wire reel 103 is rotated by the mainspring to store the wire 105 and a resistance force is applied by the rotary damper 101. Therefore, the wire 105 is stored in the wire reel 103 at a low speed. As a result, the sliding door and the like are also closed at a low speed.

  As shown in FIG. 12, the sliding door closing device described in Patent Document 2 includes a damper unit 201 and a mainspring unit 202, and winds the wire W around the trunk winding portion 203 of the damper unit 201 one or more times, and the mainspring. A wire W is wound around the body winding portion 205 of the unit 202 and can be accommodated. When automatically closing the sliding door or the like, the body winding portion 205 is rotated by the elastic restoring force of the mainspring 204 to accommodate the wire, and a resistance force is exerted by the damper unit, so that the wire W is drawn at a low speed. Will be closed at low speed.

JP 2000-130004 A Utility Model Registration No. 3101743 Specification

In the above-mentioned self-closing sliding door closers of the two documents, when the sliding door etc. is automatically closed, the wire is drawn in using the elastic return force of the spring and the damper, so the sliding door etc. closes suddenly. The sliding door can be closed slowly and slowly at a low speed.
Even with a sliding door equipped with these self-closing type sliding door closers, when the room is being heated or cooled, there are cases where it is attempted to close manually quickly. When a sliding door provided with a self-closing type sliding door closer described in Patent Document 1 is manually closed quickly, a plurality of gears are engaged with each other, so that the wire 105 may loosen due to the resistance of the rotary damper 101.
In the self-closing type sliding door closer described in Patent Document 2, the wire W is wound around the body winding part 203 of the damper unit 201 by one or more turns. The part 203 may slip, and the resistance force of the damper unit 201 may not work, and only the force of the mainspring 204 may be automatically closed at high speed. Therefore, in order for the wire W to stick to the body winding part 203, the wire W may be wound around the body winding part 203, but if the number of windings of the wire W is large, turbulence occurs, and this turbulence is triggered. Thus, the rotation of the damper unit 201 may stop or the rotation speed may be disturbed. Further, when the door or the like is manually fastened, it is conceivable that the wire W is loosened, the winding portion 203 of the damper unit 201 is disturbed, or the wire W is detached.

  An object of the present invention is to ensure that the damper function can be exerted reliably, and that the traction means does not loosen and the traction means does not come off from the pulley when the sliding door or the like is manually closed quickly. A self-closing type sliding door closer that can be reliably wound around a pulley while maintaining the traction means in tension.

  A self-closing type sliding door closer according to the present invention is a self-closing type sliding door closer including a mainspring unit, a damper unit, and a pulling means capable of pulling the sliding door, and the mainspring unit includes a shaft provided in a case body. A spring pulley disposed around the shaft, a spring disposed between the shaft and the spring pulley, and having one end fixed to the shaft and the other end fixed to the spring pulley, and using an elastic return force A spring capable of storing traction means by rotating a pulley, the damper unit providing a damper function in a wire rewind direction, a damper pulley capable of rotating integrally with the damper, and the traction means. The rotatable free pulley to guide and the damper unit are separated from the main pulley. And a separating means applying a force in the direction of an outer peripheral end surface of the outer peripheral end face of the mainspring pulley and the damper pulley can be or adapted to be engageable contact.

  According to the self-closing type sliding door closer having the above-described configuration, the damper function can be surely exhibited when the mainspring pulley and the damper pulley come into contact with or engage with each other. Further, since the separating means is provided, even when the sliding door is manually moved quickly, the separating means acts to separate the spring pulley and the damper pulley, so that the traction means can be quickly moved through the free pulley. It can be wound around the pulley, and therefore, the pulling means can be accommodated in the mainspring pulley in a stretched state without loosening.

  A self-closing type sliding door closer according to the present invention is a self-closing type sliding door closer provided with a mainspring unit, a damper unit, and a pulling means capable of pulling the sliding door. The mainspring unit is provided in a case main body. A shaft, a spring pulley disposed around the shaft, a shaft disposed between the shaft and the spring pulley, and having one end fixed to the shaft and the other end fixed to the spring pulley, and using an elastic return force A spring capable of storing a pulling means by rotating the mainspring pulley, the damper unit providing a damper function by a wire rewinding direction, a damper pulley capable of rotating integrally with the damper, and the pulling A rotatable free pulley that guides the means and the damper unit away from the intermediate pulley Separating means for applying a force in the direction of movement, the intermediate pulley between the mainspring pulley and the damper pulley, an outer peripheral end surface of the mainspring pulley, an outer peripheral end surface of the intermediate pulley, and an outer peripheral end surface of the damper pulley Can be contacted or engaged with each other.

  Further, the self-closing sliding door closer according to the present invention is such that the outer peripheral end surface of the mainspring pulley and the outer peripheral end surface of the damper pulley are a combination of elastic bodies, or a combination of a gear-shaped groove and an elastic body. It is desirable that the outer peripheral end surface of the can be contactable or engageable.

  The self-closing type sliding door closer according to the present invention is a combination of the outer peripheral end surface of the mainspring pulley, the outer peripheral end surface of the intermediate pulley, and the outer peripheral end surface of the damper pulley, or a combination of a gear-shaped groove and an elastic body. It is desirable that the outer peripheral end surfaces of these pulleys can be contacted or engaged.

  Moreover, the self-closing type sliding door closer according to the present invention has a combination of the outer peripheral end surface of the mainspring pulley and the outer peripheral end surface of the damper pulley of a V groove and a mountain shape or a round shape, and the outer peripheral end surfaces of both pulleys can contact or engage with each other. A possible configuration is desirable.

  In the self-closing sliding door closer according to the present invention, the traction means is preferably one of a wire, a belt, a rope, a tape, a band, and a chain, and the separation means is a spring, rubber, or weight. Either one is desirable.

  Further, in the self-closing sliding door closer according to the present invention, the free pulley may be disposed between the damper and the damper pulley, and the free pulley and the damper pulley are disposed on a clutch plate. Also good.

  Further, the self-closing sliding door closer according to the present invention preferably includes a reversing pulley for changing the direction of the traction means.

  In the self-closing sliding door closer according to the present invention, it is preferable that the main body case is provided with an abutment member that comes into contact with the spring pulley when the sliding door is opened.

  In the self-closing sliding door closer according to the present invention, it is preferable that the main body case is provided with a stop roller and a lock plate.

  According to the present invention, the damper function can be surely exerted, and the traction means is not loosened and the traction means is not detached from the pulley when the sliding door is manually closed. It is possible to provide a self-closing sliding door closer that can be reliably wound around a pulley while maintaining the tensioned state.

  An embodiment of a self-closing sliding door closer according to the present invention will be described in detail with reference to the drawings. FIG. 1A is a perspective view showing an embodiment of a self-closing sliding door closer according to the present invention, FIG. 1B is an explanatory view from a side surface direction, and FIG. 1C is an explanatory view from an upper surface direction. The self-closing sliding door closer 1 includes a case body 2 in which a mainspring unit 3 and a damper unit 4 are arranged. In the mainspring unit 3, a mainspring pulley 6 is rotatably disposed around a shaft 5 provided in the case body 2, and a mainspring 7 is disposed between the shaft 5 and the mainspring pulley 6.

  The mainspring 7 has one end fixed to the shaft 5 and the other end fixed to the mainspring pulley 6. The mainspring 7 is elastically deformed and compressed by the rotation of the mainspring pulley 6. Conversely, the elasticity of the compressed mainspring 7 is compressed. The mainspring pulley 6 can be rotated with the restoring force. In a normal use state, the shaft 5 is fixed to the case main body 2 and cannot be rotated. However, the shaft 5 may be released from the main body case 2 in order to adjust the compression force and elastic return force of the mainspring before use. it can. As an example, with an adjustment knob (not shown) attached to the shaft 5, the shaft 5 can be unfixed from the main body case 2, and the knob can be turned to increase or decrease the power of the mainspring.

  The damper unit 4 has a damper 9, and a damper shaft 8 that transmits a damper function is incorporated in the damper 9. A damper pulley 10 is fixed to the damper shaft 8 so as to be integrally rotatable. A free pulley 11 is arranged between the damper 9 and the damper pulley 10 and is configured to be freely rotatable with respect to the damper shaft 8. The free pulley 11 guides a wire 20 as an example of a traction means in the groove, and the guided wire 20 is wound around the mainspring pulley 6 or conversely, the wire 20 accommodated in the mainspring pulley 6. Can be sent out via the free pulley 11. The damper shaft 8 is supported near both ends of the support plates 12 and 13 at both ends thereof, and is rotatable with respect to the support holes 14 and 14 of the support plates 12 and 13.

  Holes 15 and 15 are formed in the vicinity of the other ends of the support plates 12 and 13, and these holes 15 and 15 pass through the fixed shaft 16. The fixed shaft 16 is fixedly attached to the main body case 2 and is not fixed to the holes 15 and 15. Therefore, the support plates 12 and 13 can swing with respect to the fixed shaft 16. . One of the two support plates 12 and 13 is provided with a protrusion 17 in the vicinity of the middle in the longitudinal direction of the support plate (12 or 13). One end of a spring 18 which is an example of a separating means is provided on the protrusion 17. The part is locked. The other end of the spring 18 is locked to a protrusion 19 provided on the case body 2, and a force that urges the support plates 12 and 13 in the direction of the protrusion 19 on the case side acts by the spring 18.

  Next, the usage method of the self-closing type sliding door closer which concerns on this invention is demonstrated. Here, the case where the self-closing type sliding door closer is attached to the sliding door as an example of the usage method will be described. As an example of the sliding door, there is a sliding door type that opens and closes the entrance of a room by moving one of the two sliding doors that are movable in parallel and laterally. There is a wall of the house around the two sliding doors, and the frame is fixed on the wall side between this wall and the two sliding doors. A case where a room and a hallway are partitioned will be described as an example. In normal use, the self-closing sliding door closer 1 is installed at the upper end of the sliding door, near the side where the sliding door begins to be opened, and the annular portion 21 of the wire 20 is fixed to the upper part of the frame on the side where the sliding door begins to open. It is fixed to the hook etc. which were made.

  When the sliding door is closed, the wire 20 is wound around the mainspring pulley 6, and the annular portion 21 formed at one end of the wire 20 is attached to a hook or the like fixed to a frame (not shown) of the house wall. It is attached. Between the annular portion 21 at one end and the free pulley 11, the wire 20 is substantially parallel to the upper frame and is guided by being bent by the free pulley 11 and accommodated in the mainspring pulley 6. When the sliding door is closed, the force of the mainspring 7 acts in the direction in which the wire 20 is wound around the mainspring pulley 6, and the wire 20 is tensioned from the annular portion 21 to the mainspring pulley 6, and the wire 20 is stretched. It is in the state.

  Due to the tension of the wire 20, the damper pulley 10 of the damper unit 4 and the main pulley 6 of the mainspring unit 3 are in contact with each other. That is, since the spring 7 pulls the wire 20 into the main pulley 6 more than the force acting in the direction in which the spring 18 separates the damper pulley 10 from the main pulley 6, the outer peripheral end face 22 of the damper pulley 10 and the main pulley. 6 are in contact with each other. As an example, when the sliding door is manually opened in the direction indicated by the arrow A in FIG. 1B from the state in which such a sliding door is closed, the annular portion 21 of the wire 20 is fixed to the hook or the like of the frame. The wire 20 is fed from the mainspring pulley 6 to the free pulley 11 in the direction indicated by the arrow B of 1B. When the wire 20 is fed out, the mainspring pulley 6 is rotated in the direction indicated by the arrow C in FIG. 1B, and as a result, the mainspring 7 is compressed around the shaft 5.

  Since the outer peripheral end surfaces 22 and 23 of the damper pulley 10 and the spring pulley 6 are in contact with each other, the damper pulley 10 and the damper shaft 8 are moved in the direction of the arrow D in FIG. It is rotated in the direction shown in. As an example, the outer peripheral end surfaces 22 and 23 of the damper pulley 10 and the mainspring pulley 6 are formed of rubber, so that they do not slip as long as they are in contact with each other, and the damper pulley 10 depends on the rotation of the mainspring pulley 6. It will be. As shown in FIG. 2, the damper 9 has a plurality of damper blades 9A bent in a substantially square shape around the damper shaft 8 and arranged in the circumferential direction. The damper 9 has a viscous medium 9b such as viscous oil. Filled with. When the sliding door is opened, the damper blade 9A is rotated in the direction of arrow D (the direction of arrow D in FIG. 1B), so that the resistance of the viscous medium 9B is hardly applied, and the outer peripheral end faces 22 and 23 of the damper pulley 10 and the spring pulley 6 are. Due to the contact, the damper pulley 10 rotates in response to the rotation of the mainspring pulley 6.

  When the sliding door is closed in the direction of arrow J in FIG. 1B by the self-closing type sliding door closer 1 from the opened state, the spring pulley 6 is rotated in the direction of arrow E in FIG. 1B by the elastic restoring force of the compressed spring 7. The wire 20 moves in the direction of arrow F in FIG. 1B, and the wire 20 is wound around the mainspring pulley 6. At this time, since the elastic restoring force of the spring 7 is larger than the urging force in the direction in which the spring 18 is separated, the free pulley 11 guiding the wire 20 is indicated by an arrow G in FIG. Force acts in the direction. As a result, the outer peripheral end surface 22 of the damper pulley 10 is reliably in contact with the outer peripheral end surface 23 of the mainspring pulley 6, and the damper pulley 10 is rotated in the direction of arrow H in FIG. 1B.

  The damper pulley 10 and the damper shaft 8 rotate integrally. When the damper pulley 10 rotates in the direction of arrow H, the damper blade 9A is rotated in the direction shown by arrow I in FIG. 2, but the high resistance of the viscous medium 9B As a result, rotation resistance is generated, rotation is slowed, and a damper function is generated. For this reason, the spring pulley 6 tends to rotate fast due to the elastic restoring force of the spring 7, but the spring pulley 6 also rotates slowly because the damper pulley 10 rotates slowly due to the rotational resistance of the damper 9. Since the mainspring pulley 6 rotates slowly, the wire 20 is slowly wound around the mainspring pulley 6 and the sliding door is slowly closed.

  In the above-described configuration, the case where the damper is automatically and slowly closed using the damper has been described. For example, when the room is being heated or is being cooled, the sliding door is to be closed quickly. Sometimes. The movement of the self-closing sliding door closer when the sliding door is manually closed quickly will be described with reference to FIG. When the sliding door is manually closed quickly, the self-closing sliding door closer 1 is moved quickly in the direction of arrow K in FIG. Then, since the force due to manual movement is added to the force (the elastic restoring force of the mainspring 7) that the mainspring 7 of the mainspring unit 3 winds up the wire 20, the force of the spring 18 is won and the damper unit 4 is separated from the mainspring unit 3. Move in the direction. When the damper unit 4 is separated from the mainspring unit 3, the contact between the outer peripheral end surface 22 of the damper pulley 10 and the outer peripheral end surface 23 of the mainspring pulley 6 is released, and the damper function does not work. Therefore, the wire 20 is wound around the mainspring pulley 6 at high speed only by the elastic return force of the mainspring 7 through the free pulley 11. When the sliding door is completely closed, the winding of the wire 20 is completed.

  During winding of the wire 20, the tensioned state is maintained by the spring 7, so that the wire 20 does not loosen or come off at the free pulley 11, but the wire 20 comes off due to unexpected circumstances. In order to prevent this, it is desirable to provide a protrusion 24. The protrusions 24 for preventing the wire from being detached are desirably provided at a position where the direction of the wire is largely bent by the free pulley 11, and preferably disposed at an interval to maintain a slight gap from the free pulley 11.

  Conventionally, when manually closing the sliding door quickly, the damper function could not be released, so the wire could not be wound up in time, and the wire would loosen at the damper or could come off the damper pulley. It was. In the above-described configuration of the present invention, since the damper function can be released, the wire can be wound up without being loosened or detached. Further, the contact or engagement between the outer peripheral end surfaces of the mainspring pulley and the damper pulley may be a combination of a V groove 23A and a mountain shape or an R shape 22A as shown in the lower part of FIG. 1C.

  In the above-described embodiment, an example in which the sliding door is opened in the left direction and closed in the right direction when viewed from the front is shown, but an embodiment in which the sliding door is opened in the right direction and closed in the left direction will be described. FIG. 4 shows an example of a self-closing sliding door closer that can be closed by moving the sliding door to the left. The self-closing type sliding door closer 1 </ b> A mainly includes a case body 2, a mainspring unit 3, a damper unit 4 </ b> A, a reversing pulley 25, and a wire 20. The configuration of the case main body 2, the mainspring unit 3, and the wire 20 is the same as the configuration shown in FIG. 1, and a detailed description thereof is omitted here. The basic configuration of the damper unit 4A is the same as the configuration shown in FIG. 1, and the damper shaft 8 and the damper pulley 10 incorporated in the damper 9 can rotate integrally, and the damper 9 and the damper pulley 10 are free to rotate. The pulley 11 is disposed so as to be freely rotatable. The damper unit 4 </ b> A is movable in a slit 26 formed in the case main body 2, and is movable in a direction in which the outer peripheral end surface 22 of the damper pulley 10 is separated from the outer peripheral end surface 23 of the mainspring pulley 6. A reversible pulley 25 that can freely rotate is disposed on the upper side of the damper pulley 10, and the wire 20 is guided in a substantially reverse S shape by the damper pulley 10 and the reverse pulley 25.

  The mechanism when the sliding door is opened and then closed by the self-closing closer is the same as the mechanism shown in FIG. 1 except that the wire is reversed by the reversing pulley 25, and detailed description thereof is omitted. When the sliding door is manually closed, the damper unit 4A moves in the slit 26 because one end of the spring 18A is locked to the damper unit 4A. Therefore, the damper unit 4A moves away from the mainspring unit 3, and the contact between the outer peripheral end surface 22 of the damper pulley 10 and the outer peripheral end surface 23 of the mainspring pulley 6 is released. As a result, the wire 20 is wound around the mainspring pulley 6 at high speed with the elastic return force of the mainspring via the reversing pulley 25 and the free pulley 11 while maintaining the tension.

  In the self-closing type sliding door closer 1A shown in FIG. 4, the damper unit 4 is moved to the left by the spring 18A to wind the wire 20 at a high speed, but the damper unit is separated by a separating means other than the spring 18A. It may be moved. FIG. 5 shows another embodiment, and shows an example in which the damper unit is separated using a weight. In this self-closing type sliding door closer 1B, the basic configuration is the same as the configuration shown in FIG. 4, the same reference numerals are given to the same configurations, and the detailed description thereof is omitted here. The damper unit 4B is provided with support plates 12B and 13B that are bent in a substantially square shape, and is swingably attached to the support shaft 27 at one end of the support plates 12B and 13B. At the other end of the support plates 12B and 13B, a weight is suspended, and a damper shaft 8B is supported at a portion bent in a substantially intermediate square shape between the support plates 12B and 13B.

  The mechanism when the sliding door is opened and then closed by the self-closing closer is the same as the mechanism shown in FIGS. 1 and 4 except that the wire is reversed by the reversing pulley 25, and detailed description thereof is omitted here. . In this case, since the spring force is larger than the downward force due to the weight of the weight, the outer peripheral end surface 22 of the damper pulley 10 and the outer peripheral end surface 23 of the main pulley 6 are in contact with each other. When the sliding door is manually closed, the force of the weight is overcome, and as a result, the support plates 12B and 13B are moved (swinged) in the direction indicated by the arrows, and the damper pulley 10 is separated from the main pulley 6. Then, the wire 20 is guided to the reversing pulley 25 and the free pulley 11 by the power of the mainspring, and is wound around the mainspring pulley 6 at a high speed while maintaining a tension state.

  In the above-described self-closing sliding door closer, the outer peripheral end face of the mainspring pulley and the outer peripheral end face of the damper pulley are in direct contact with each other to generate a damper function or release the damper function, but do not allow these outer peripheral end faces to contact each other. There are types that can produce similar effects. FIG. 6 shows an embodiment of a self-closing sliding door closer according to the present invention that generates or cancels a damper function via an intermediate pulley. The basic configuration of the main body case 2, the mainspring unit 3 damper pulley 4C, and the wire 20 of the self-closing type sliding door closer 1C is the same as the configuration shown in FIG. Are omitted here. In this configuration, an intermediate pulley 29 that can freely rotate is disposed, and an outer peripheral end surface 30 of the intermediate pulley 29 is in contact with an outer peripheral end surface 22 of the damper pulley 6 and is in contact with an outer peripheral end surface 23 of the spring pulley 6. The wire 20 is guided to the free pulley 11 without being routed through the intermediate pulley 29 and wound up by the mainspring pulley 6.

  When the sliding door is opened, the mainspring pulley 6 is rotated, the intermediate pulley 29 is rotated by the rotation, and the damper pulley 10 is further rotated. At this time, the wire 20 is guided and sent out from the mainspring pulley 6 to the free pulley 11. When the sliding door is automatically closed by the self-closing type sliding door closer 1C, the damper function is transmitted to the intermediate pulley 29 by the damper pulley 10, and further, the damper function is transmitted from the intermediate pulley 29 to the spring pulley 6, so that the sliding door is slowly Closed. When the sliding door is manually closed, the force of the spring 18C is won, and the support plates 12C and 13C are moved (swinged) in the direction indicated by the arrow with the support shaft 27C as a fulcrum by the spring 18C. As a result, the damper pulley 10 is separated from the intermediate pulley, so that the transmission of the damper function is released, and the wire 20 is quickly wound around the main pulley 6 via the free pulley 11 while maintaining tension. .

  In the above-described self-closing sliding door closer, it is possible to arrange the free pulley independently, which is a configuration in which the free pulley is arranged between the damper pulley and the damper, and an example is shown in FIG. In this self-closing type sliding door closer 1D, a damper 9D and a damper pulley 10D are disposed below the support plates 12D and 13D in the damper unit 4D, and a free pulley 11D is disposed above the support plates 12D and 13D. When the sliding door is manually opened or automatically closed, the outer peripheral end surface 22D of the damper pulley 10D and the outer peripheral end surface 23 of the mainspring pulley 6 come into contact with each other, and the wire 20 moves between the mainspring pulley 6 and the free pulley 11D. When the sliding door is manually closed, the support plates 12D and 13D are moved (swinged) in the direction indicated by the arrow about the support shaft 27D by the spring 18D, and the damper pulley 10D is separated from the main pulley 6. Accordingly, the wire 20 is quickly wound around the mainspring pulley 6 while being guided by the free pulley 11D and maintaining tension.

  In this configuration of the self-closing sliding door closer, the free pulley is provided independently of the damper and the damper pulley, so that the thickness of the main body case 2 can be reduced. On the other hand, the configuration in which the free pulley is arranged between the damper and the damper pulley requires a thickness compared to the configuration in which the free pulley is independent, but the damper, the damper unit and the free pulley can be combined into one component on the same axis. This makes it possible to reduce the size of the self-closing closer.

  In the structure of the above-mentioned self-closing type sliding door closer, after opening the sliding door, the sliding door starts to close immediately due to the elastic return force of the mainspring, but the sliding door is left open for a while with the sliding door opened, or the sliding door It is also possible to start closing slowly. FIG. 8 shows another embodiment according to the present invention, and shows a configuration for delaying the closing of the sliding door. The configuration of the main body case 2, the mainspring unit 3, the damper unit 4A, the reversing pulley 25, and the wire 20 of the self-closing type sliding door closer 1E having the configuration shown in FIG. 8 is the same as the configuration shown in FIG. Are omitted here.

  As shown in FIG. 8A, a sliding door closing delay mechanism is provided on the lower side of the mainspring unit 3, and has a contact member 31. One end of the contact member 31 can come into contact with the side frame 32. Rubber R is attached. The contact member 31 is urged by a return spring 33 so as to be movable rightward as viewed in the figure. A gear 34 is formed below the contact member 31, and meshes with a gear 36 of a damper 35 disposed below the contact member 31. The damper 35 is configured as shown in FIG. 2 as an example. When the damper is rotated clockwise, a resistance is generated and a damper function is generated. When the damper 35 is rotated counterclockwise, a damper function is generated. It has a configuration that does not.

  As shown in FIG. 8B, when the sliding door is closed, the rubber R comes into contact with the side frame 32 installed on the wall or the like of the house, and the contact member comes into contact with the outer peripheral end surface 23 of the spring pulley 6. Thereafter, the contact resistance between the mainspring pulley 6 and the contact member 31, the urging force of the return spring 33 in the right direction, and the damper resistance by the damper 35 act to delay the mainspring pulley 6 from starting to rotate. Thereafter, the mainspring pulley 6 starts to rotate gradually, and when the contact between the mainspring pulley 6 and the contact member 31 is released, the mainspring pulley is rotated as described with reference to FIG. When such a delay mechanism is provided, it is not necessary to hold the sliding door with a hand or the like when a plurality of people enter or leave, or when loading or unloading luggage. Further, the delay time can be adjusted by adjusting the contact force of the contact member (the pressing force against the mainspring pulley).

  Moreover, it is possible to maintain a sliding door in the state which provided the stopper and opened the sliding door, or arbitrary positions, The example is shown in FIG. The configuration of the main body case 2, the mainspring unit 3, the damper unit 4A, the reversing pulley 25, and the wire 20 of the self-closing sliding door closer 1F having the configuration shown in FIG. 9A is the same as the configuration shown in FIG. Are omitted here. The self-closing sliding door closer 1F is provided with a stop mechanism on the right side of the mainspring pulley as seen in the figure. This stop mechanism is provided with a stop roller 37, and when the self-closing sliding door closer 1F moves, the stop roller 37 can contact the upper frame 42 and freely rotate. A stop rod 38 is provided below the stop roller, and a lock plate 39 is attached to the top of the stop rod 38. The lock plate 39 can swing left and right about a shaft 40 and is supported by springs 41 and 41 on both sides.

  In order to stop at an arbitrary position with the sliding door open, the stop rod 39 is pushed upward as shown by an arrow as shown in FIG. 9B, and the lock plate 30 is bitten into the stop roller 37, or I'll let you get caught. Then, since the stop roller 37 cannot be rotated by the lock plate 39, the state in contact with the upper frame 42 is maintained, and the wire 20 cannot be drawn by the mainspring. In this way, the self-closing sliding door closer 1F is prevented from moving, so that the sliding door can be kept open. Further, when the sliding door is moved from this state, the stop roller 37 is forcibly rotated as shown in FIG. 9C, so that the lock plate 39 overcomes the urging force of the springs 41 and 41 and swings around the shaft 40. Move. When the swing is further increased, the lock plate 39 is detached from the stop roller 37, and the sliding door can be moved.

  In the self-closing sliding door closer of the present invention, a damper unit shown in FIG. 10 will be described as an example of the damper unit. In this damper unit 4 ′, a damper shaft 8 ′ incorporated in a damper 9 ′ and a damper pulley 10 ′ can rotate integrally. Furthermore, an annular free pulley 11 ′ is arranged on the outer periphery of the damper 9 ′ via a slide bearing 43. Therefore, the free pulley 11 'can freely rotate with respect to the damper 9'. With such a configuration, the thickness of the damper unit can be reduced, and the self-closing sliding door closer can be made smaller and lighter. Can be realized.

  In the above-described embodiment, when the outer peripheral end surface of the mainspring pulley and the outer peripheral end surface of the damper pulley are in contact with each other to transmit the damper function, it is necessary that the outer peripheral end surfaces do not slip. The case where rubber is rubber can be given. As another example, the damper function can be transmitted by engaging a gear-like groove and an elastic body with each outer peripheral end face, that is, engaging each other. In the embodiment shown in FIG. 6, the configuration in which the damper function is transmitted via the intermediate pulley has been described. In this case, an elastic body or a gear-like groove is also formed on the outer peripheral end surface of the intermediate pulley, and the main pulley and the intermediate pulley are formed. It is possible to reliably transmit the damper function with the damper pulley. Moreover, although the embodiment has been described by taking the wire as an example of the pulling means, examples of the other pulling means include belts, ropes, tapes, bands, chains, and the like. Furthermore, although a spring and a weight have been described as an example of the separation means, rubber can be exemplified as the other separation means.

It is a perspective view of an example of an embodiment of a self-closing type sliding door closer according to the present invention. It is explanatory drawing from the side direction of an example of embodiment of the self-closing type sliding door closer which concerns on this invention. It is explanatory drawing from the upper surface direction of an example of embodiment of the self-closing type sliding door closer which concerns on this invention. It is explanatory drawing of an example of the damper used for the self-closing type sliding door closer which concerns on this invention. It is explanatory drawing explaining the form closed manually of an example of embodiment of the self-closing type sliding door closer which concerns on this invention. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention, Comprising: It is explanatory drawing of the structure which delays a sliding door. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention, Comprising: It is explanatory drawing which expanded the principal part of the structure which delays a sliding door. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention, Comprising: It is explanatory drawing of the structure provided with the stopper. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention, Comprising: It is explanatory drawing which expanded the principal part of the stopper. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention, Comprising: It is explanatory drawing which expanded the principal part of the stopper. It is explanatory drawing explaining another example of embodiment of the self-closing type sliding door closer which concerns on this invention. It is explanatory drawing which shows an example of the conventional self-closing type sliding door closer. It is explanatory drawing which shows another example of the conventional self-closing type sliding door closer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Self-closing type sliding door closer 2 Case body 3 Spring unit 4 Damper unit 5 Shaft 6 Spring pulley 7 Spring 8 Damper shaft 9 Damper 10 Damper pulley 11 Free pulley 12, 13 Support plate 14 Support hole 15 Hole 16 Fixed shaft 17 Protrusion (plate side )
18 Spring 19 Protrusion (case body side)
20 wires
21 annular portion 22 outer peripheral end surface of damper pulley 23 outer peripheral end surface of mainspring pulley

Claims (12)

A self-closing sliding door closer having a mainspring unit, a damper unit, and a pulling means capable of pulling the sliding door,
The mainspring unit includes a shaft provided in a case body, a mainspring pulley disposed around the shaft, and disposed between the shaft and the mainspring pulley, and one end is fixed to the shaft and the other end is The mainspring is fixed to the mainspring pulley, and the mainspring pulley can be stored by rotating the mainspring pulley using the elastic return force.
The damper unit includes a damper that imparts a damper function in a wire rewinding direction, a damper pulley that can rotate integrally with the damper, a rotatable free pulley that guides the traction means, and the damper unit that includes the spring pulley. Separating means for applying a force in a direction away from
A self-closing type sliding door closer characterized in that the outer peripheral end face of the mainspring pulley and the outer peripheral end face of the damper pulley can contact or engage with each other. A self-closing sliding door closer having a mainspring unit, a damper unit, and a pulling means capable of pulling the sliding door,
The mainspring unit includes a shaft provided in a case body, a mainspring pulley disposed around the shaft, and disposed between the shaft and the mainspring pulley, and one end is fixed to the shaft and the other end is The mainspring is fixed to the mainspring pulley, and the mainspring pulley can be stored by rotating the mainspring pulley using the elastic return force.
The damper unit includes a damper that imparts a damper function in a wire rewind direction, a damper pulley that can rotate integrally with the damper, a rotatable free pulley that guides the traction means, and the damper unit that is connected to an intermediate pulley. Separating means for applying a force in the separating direction;
The intermediate pulley is provided between the spring pulley and the damper pulley,
A self-closing type sliding door closer characterized in that the outer peripheral end surface of the mainspring pulley, the outer peripheral end surface of the intermediate pulley, and the outer peripheral end surface of the damper pulley can contact or engage with each other.   The outer peripheral end surface of the mainspring pulley and the outer peripheral end surface of the damper pulley are a combination of elastic bodies, or a combination of a gear-shaped groove and an elastic body, and the outer peripheral end surfaces of these pulleys can be contacted or engaged. The self-closing type sliding door closer according to claim 1, wherein   The outer peripheral end face of the mainspring pulley, the outer peripheral end face of the intermediate pulley, and the outer peripheral end face of the damper pulley are a combination of elastic bodies, or a combination of a gear-shaped groove and an elastic body, and the outer peripheral end faces of these pulleys can be contacted or The self-closing type sliding door closer according to claim 2, which is configured to be engageable.   The outer peripheral end surface of the mainspring pulley and the outer peripheral end surface of the damper pulley are a combination of a V-groove and a mountain shape or a round shape, and the outer peripheral end surfaces of both pulleys can be contacted or engaged. The self-closing type sliding door closer according to 1.   The self-closing sliding door closer according to any one of claims 1 to 5, wherein the pulling means is one of a wire, a belt, a rope, a tape, a band, and a chain.   The self-closing sliding door closer according to any one of claims 1 to 6, wherein the separating means is any one of a spring, rubber, and a weight.   The self-closing sliding door closer according to any one of claims 1 to 7, wherein the free pulley is disposed between the damper and the damper pulley.   The self-closing closer according to any one of claims 1 to 8, wherein the free pulley and the damper pulley are arranged on a clutch plate.   The self-closing sliding door closer according to any one of claims 1 to 9, further comprising a reversing pulley that changes a direction of the pulling means.   The self-closing type sliding door closer according to any one of claims 1 to 10, wherein the main body case is provided with an abutment member that comes into contact with the mainspring pulley when the sliding door is opened.   The self-closing sliding door closer according to any one of claims 1 to 11, wherein the main body case is provided with a stop roller and a lock plate.

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