EP0567262A1 - Sliding door device - Google Patents
Sliding door device Download PDFInfo
- Publication number
- EP0567262A1 EP0567262A1 EP93302837A EP93302837A EP0567262A1 EP 0567262 A1 EP0567262 A1 EP 0567262A1 EP 93302837 A EP93302837 A EP 93302837A EP 93302837 A EP93302837 A EP 93302837A EP 0567262 A1 EP0567262 A1 EP 0567262A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sliding door
- door
- spring
- timing belt
- closer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000717 retained effect Effects 0.000 claims abstract description 25
- 239000000725 suspension Substances 0.000 claims description 26
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 2
- 238000013016 damping Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
- E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
- E05F1/16—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for sliding wings
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
- E05F3/08—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes in which a torsion spring rotates a member around an axis arranged in the direction of the axis of the piston
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D13/00—Accessories for sliding or lifting wings, e.g. pulleys, safety catches
- E05D13/10—Counterbalance devices
- E05D13/12—Counterbalance devices with springs
- E05D13/1276—Counterbalance devices with springs with coiled ribbon springs, e.g. constant force springs
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/132—Doors
Definitions
- the present invention relates to a sliding door device provided with a sliding door closer having a drum which contains a spring therein.
- FIG. 3 shows a sliding door device disclosed in Japanese Patent Application Laid-Open No. Hei 2-256779.
- two roller units C and D provided on a sliding door A are laid on a suspension rail E formed on a door frame B.
- a sliding door closer 1 is provided on one side of the door frame B in the door closing direction, whereas a driven pulley 2 is provided on the other side thereof in the door opening direction.
- a timing belt 3 is wound around between the sliding door closer 1 and the driven pulley 2. Both ends 3a and 3b of the belt 3 are retained at the two roller units C and D by metallic members 4 and 5, respectively.
- a bolt 6 is coupled to the door opening side belt end 3b and passes through the metallic member 5 mounted on the roller unit D.
- a tension spring 7 is provided around the bolt 6.
- a nut 8 is threadedly engaged with the bolt 6 so that the tension spring 7 is compressed between the metallic member 5 and the nut 8 to thereby impart a biasing force to the timing belt 3.
- the timing belt 3 travels in response to the door closing operation of the sliding door A, so that a spring encased in a drum of the sliding door closer 1 is urged and the sliding door A is closed while the drum is being rotated under the brake force through a hydraulic dampening circuit by the spring bias force of the spring.
- a tooth-jump preventing roller 9 is mounted on a closer mounting member 10 which is used to mount the sliding door closer 1 onto the suspension rail E, whereby the timing belt 3 is prevented from being jumped away from the drum of the sliding closer 1.
- the drum of the sliding door closer 1 is hydraulically controlled at a predetermined closing speed
- the door closer 1 when an external force is applied to the sliding doorAin the door closing direction (as indicated by X) during the door closing operation, the door closer 1 is not rotated smoothly in the counterclockwise direction as indicated by Y because of the hydraulic resistance.
- the left end 3b of the belt 3 is pulled in the direction as indicated by Z and the tension spring 7 is compressed and at the same time, the timing belt 3 is temporarily loosened, especially at the right end 3a of the belt 3 in correspondence with the compression length of the tension spring 7, so that the timing belt 3 would be offset from the teeth formed on the outer periphery of the drum of the sliding door 1.
- the tooth-jump preventing roller 9 is provided for the purpose of preventing a trouble called "tooth-jump".
- the tooth-jump preventing roller 9 suffers from a disadvantage that, during the mounting it at the site, there is a fear that the roller 9 itself would be lost and it would take a long working time for mounting it in place because the roller 9 is to be threadedly mounted on the closer mounting member 10 after the timing belt 3 has been wound around the drum of the sliding door doser 1.
- the closer mounting member 10 for mounting the sliding door closer onto the suspension rail E has a shape such that the member 10 may be mounted on the right/left sliding door A, resulting in the complicated configuration of the member 10.
- an object of the present invention is to provide a sliding door device wherein, even if an external force is applied to the door during the door closing operation, it is possible to avoid a tooth jump of a timing belt and it is possible to reduce the number of the necessary mechanical parts and the cost therefor to thereby simplify the mounting work and make the closer mounting member compact in size.
- a sliding door device for a sliding door having a door frame, a suspension rail, and two rollers mounted on the suspension rail, comprising: a sliding door closer having a spring held within a drum and a hydraulic pressure dampening circuit, said sliding door closer being located at one end of the rail; a driven pulley provided at the other end of the rail; a timing belt wound between the door closer and a driven pulley with a first end and a second end of the timing belt being retained at the two rollers; and a tension spring for drawing one of the first and second ends of the timing belt, said spring of said sliding door closer accumulating a spring force in response to a door opening operation of the sliding door through the timing belt, said spring of said sliding door closer releasing the spring force while being braked by said hydraulic dampening circuit during a door closing operation, wherein the sliding door closer is provided on one side in the door opening direction, the driven pulley is provided one side in the door closing direction, and the tension spring is provided
- a sliding door device for a sliding door having a door frame, a suspension rail, and two rollers mounted on the suspension rail, comprising: a sliding door closer provided on one side in a door dosing direction of the suspension rail, said door closer having a spring held within a drum and a hydraulic pressure dampening circuit; a driven pulley provided on one side in a door opening direction; a timing belt wound between the door closer, with a first end and a second end of the timing belt being retained at the two rollers; and a tension spring fordrawing one of the first and second ends of the timing belt, said spring of said sliding door closer accumulating a spring force in response to a door opening operation of the sliding doorthrough the timing belt, said spring of said sliding door closer releasing the spring force while being braked by said hydraulic dampening circuit during a door closing operation, wherein said tension spring is provided at the belt end retained at the roller on one side in the door opening direction.
- a sliding door device for a sliding door having a door frame, a suspension rail, and two rollers mounted on the suspension rail
- said sliding door device comprising: a sliding door closer having a spring held within a drum and a hydraulic pressure dampening circuit, said sliding door closer being located on one side in a door closing direction of the rail, a driven pulley provided at the other end of the rail, a timing belt wound between the sliding door closer and the driven pulley with a first end and a second end of the timing belt being retained at the two rollers, respectively, a tension spring for drawing one of the first and second ends of the timing belt, said spring of said sliding door closer accumulating a spring force in response to a door opening operation of the sliding door through the timing belt, said spring of said sliding door closer releasing the spring force while being braked by said hydraulic dampening circuit during a door closing operation, characterized in that a restricting member is provided to restrict a shrinking motion of the tension spring.
- the sliding door closer and the driven pulley are arranged opposite to the conventional arrangement thereof and the tension spring is located at the belt end retained at the roller on the driven pulley side, the external force to be applied in the door closing direction during the door closing operation is directly transmitted to the sliding door closer, so that the door sliding closer is rotated and the tension of the timing belt may be kept unchanged, thus avoiding the tooth jump of the timing belt.
- the tension spring is provided at the belt end retained at the roller on the door closer side.
- the belt end retained at the roller on the door closer side is apt to be loosen.
- the tension spring connected to the belt end functions to pull the belt end to apply a tension thereon. Therefore, the loosening of the belt end can be avoided.
- the door closer and the driven pulley are arranged in the same manner as in the conventional arrangement, a short pipe is provided so as to encase the tension spring between the metallic member and the nut.
- the external force to be applied in the door closing direction during the door closing operation is transmitted from the metallic member to the nut to keep the compression length of the tension spring unchanged and to avoid the loosening of the timing belt end to thereby prevent the tooth jump of the timing belt.
- FIG. 1A shows a sliding door device in accordance with a first embodiment of the invention.
- two roller units C and D provided at an upper end of the sliding door Aare laid on a suspension rail E formed along an upper side of a door frame B.
- the sliding door closer 1 is provided on one side of the suspension rail E in the door opening direction, whereas a driven pulley 2 is provided on the other side of the suspension rail E in the door closing direction.
- a timing belt 3 is wound around between the sliding door closer 1 and the driven pulley 2.
- the left end 3b of the timing belt 3 which is wound around the door closer 1 is retained at a metallic member 4 mounted on the roller unit D on the sliding door side, whereas the right end 3a of the belt 3 is retained at a metallic member 5 mounted on the other roller unit C.
- a bolt 6 is coupled with the belt end 3a which is retained on the side of the roller unit C.
- the bolt 6 is inserted into the metallic member 5 mounted on the roller unit C.
- a tension spring 7 is wound around the bolt 6 which is threadedly engaged with a nut 8 to thereby compress the tension spring 7.
- a spiral spring 1 b within a drum 1a of the sliding door closer 1 is biased in response to the door opening operation.
- the spring urged rotational force of the spring 1b causes the drum 1a to rotate in the door closing direction while being subject to a brake through a hydraulic dampening circuit so that the timing belt 3 travels to move the sliding door A in the door closing direction.
- FIG. 2 shows the sliding door closer 1.
- the sliding door closer 1 has a drum 1a which is connected coaxially to a drive shaft 1 c by a screw s.
- the timing belt 3 is wound around the drum 1a to rotate it.
- the drum 1a has the spiral spring 1b therein.
- the drive shaft 1c has a screw portion 1j which is engaged with an inner surface 1 k of a piston 1f in the form of a cap.
- the piston 1f is engaged with the screw portion 1j in a manner surrounding the screw portion 1j.
- the piston 1f is engaged with the housing 1 d in a state wherein it can not be rotated but moved in the axial direction of a cylinder chamber 1e and has a check valve 1 and a safety valve 1 m in an annular side wall.
- On the left side of the piston 1f is formed an oil chamber 1e' and on the right side thereof is formed an oil chamber 1e" in the housing 1d.
- an oil chamber 1n n which is connected to the oil chamber 1e" through a spring receiving hole 1 p for receiving a compression spring 1rand a small side hole 1q.
- the drive shaft 1c When the door is opened, the drive shaft 1c is rotated in the door opening direction to move the piston 1f to the right as viewed in FIG. 2. At this time, oil in the chambers 1n and 1e" flows into the chamber 1e'through the check valve 1f. At this time, the compression spring 1 r is compressed to apply a resistance against a door opening movement. Therefore, even when the door is strongly opened, the shock is alleviated. Thereafter, when the door is released, the drive shaft 1c is rotated in the door closing direction opposite to the door opening direction due to the repulsive force of the spiral spring 1 b. At this time, the piston 1f is moved to the left to thereby cause the oil in the chamber 1e' to flow into the chamber 1e" through an adjusting valve (not shown).
- the flow rate of the oil is controlled by the adjusting valve to cause the door to close slowly and smoothly. If a shock is exerted on the oil circuit due to some causes, the safety valve 1 m permits the oil in the chamber 1e' to flow into the chamber 1e" to release the oil circuit. Thus, the desired hydraulic dampening circuit is formed.
- FIG. 1 B shows a sliding door device in accordance with a second embodiment of the invention.
- two roller units C and D provided at an upper end of the sliding door A are laid on a suspension rail E formed along an upperside of a door frame B.
- the sliding door closer 1 is provided on one side of the suspension rail E in the door closing direction, whereas a driven pulley 2 is provided on the other side of the suspension rail E in the door opening direction.
- a timing belt 3 is wound around between the sliding door closer 1 and the driven pulley 2.
- the right end 3a of the timing belt 3 which is wound around the doorcloser 1 is retained ata metallic member 5 mounted on the roller unit C on the sliding door closer side, whereas the left end 3b is retained at a metallic member4 mounted on the other roller unit D.
- a bolt 6 is coupled with the belt end 3a which is retained on the side of the roller unit C.
- the bolt 6 is inserted into the metallic member 5 mounted on the roller unit C.
- a tension spring 7 is wound around the bolt 6 and is threadedly engaged with a nut 8 to thereby compress the tension spring 7.
- the spring 1 b (see FIG. 2) within the drum 1a of the sliding door closer 1 is biased in response to the door opening operation.
- the spring urged rotational force of the spring 1b causes the drum 1a to rotate in the door closing direction while being subjected to a brake through a hydraulic dampening circuit so that the timing belt 3 travels to move the sliding door A in the door closing direction.
- FIG. 1C shows a sliding door device in accordance with a third embodiment of the invention.
- two roller units C and D provided at an upper end of the sliding door Aare laid on a suspension rail E formed along an upper side of a door frame B.
- the sliding door closer 1 is provided on one side of the suspension rail E in the door closing direction, whereas a driven pulley 2 is provided on the otherside of the suspension rail E in the door opening direction.
- a timing belt 3 is wound around between the sliding door closer 1 and the driven pulley 2.
- the end 3a of the timing belt 3 which is wound around the door closer 1 is retained at a metallic member 4 mounted on the roller unit C on the side of the sliding door closer 1, whereas the other end 3b is retained at a metallic member 5 mounted on the other roller unit D.
- a bolt 6 is coupled with the belt end 3b which is retained on the side of the roller unit D.
- the bolt 6 is inserted into the metallic member 5 mounted on the roller unit D.
- a tension spring 7 is wound around the bolt 6, encased within a short solid pipe 11 as a restricting member for restricting the shrinking motion of the spring 7 over a predetermined length, and threadedly engaged with a nut 8.
- any tooth jump of the timing belt will not occur.
- a tooth jump preventing roller may be dispensed with. It is possible to reduce the number of the mechanical parts and the cost therefor. The assembling work may be simplified. Furthermore, the closer mounting members may be made compact in size.
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- Power-Operated Mechanisms For Wings (AREA)
Abstract
Description
- The present invention relates to a sliding door device provided with a sliding door closer having a drum which contains a spring therein.
- FIG. 3 shows a sliding door device disclosed in Japanese Patent Application Laid-Open No. Hei 2-256779. In this device, two roller units C and D provided on a sliding door A are laid on a suspension rail E formed on a door frame B. A sliding door closer 1 is provided on one side of the door frame B in the door closing direction, whereas a driven
pulley 2 is provided on the other side thereof in the door opening direction. Atiming belt 3 is wound around between the sliding door closer 1 and the drivenpulley 2. Bothends belt 3 are retained at the two roller units C and D bymetallic members bolt 6 is coupled to the door openingside belt end 3b and passes through themetallic member 5 mounted on the roller unit D. In addition, atension spring 7 is provided around thebolt 6. Anut 8 is threadedly engaged with thebolt 6 so that thetension spring 7 is compressed between themetallic member 5 and thenut 8 to thereby impart a biasing force to thetiming belt 3. Thetiming belt 3 travels in response to the door closing operation of the sliding door A, so that a spring encased in a drum of the sliding door closer 1 is urged and the sliding door A is closed while the drum is being rotated under the brake force through a hydraulic dampening circuit by the spring bias force of the spring. A tooth-jump preventing roller 9 is mounted on acloser mounting member 10 which is used to mount the sliding door closer 1 onto the suspension rail E, whereby thetiming belt 3 is prevented from being jumped away from the drum of the sliding closer 1. Due to the fact that the drum of the sliding door closer 1 is hydraulically controlled at a predetermined closing speed, when an external force is applied to the sliding doorAin the door closing direction (as indicated by X) during the door closing operation, the door closer 1 is not rotated smoothly in the counterclockwise direction as indicated by Y because of the hydraulic resistance. As a result, theleft end 3b of thebelt 3 is pulled in the direction as indicated by Z and thetension spring 7 is compressed and at the same time, thetiming belt 3 is temporarily loosened, especially at theright end 3a of thebelt 3 in correspondence with the compression length of thetension spring 7, so that thetiming belt 3 would be offset from the teeth formed on the outer periphery of the drum of the slidingdoor 1. The tooth-jump preventing roller 9 is provided for the purpose of preventing a trouble called "tooth-jump". - However, the tooth-
jump preventing roller 9 suffers from a disadvantage that, during the mounting it at the site, there is a fear that theroller 9 itself would be lost and it would take a long working time for mounting it in place because theroller 9 is to be threadedly mounted on thecloser mounting member 10 after thetiming belt 3 has been wound around the drum of the slidingdoor doser 1. In addition, thecloser mounting member 10 for mounting the sliding door closer onto the suspension rail E has a shape such that themember 10 may be mounted on the right/left sliding door A, resulting in the complicated configuration of themember 10. - Accordingly, in view of the foregoing defects, an object of the present invention is to provide a sliding door device wherein, even if an external force is applied to the door during the door closing operation, it is possible to avoid a tooth jump of a timing belt and it is possible to reduce the number of the necessary mechanical parts and the cost therefor to thereby simplify the mounting work and make the closer mounting member compact in size.
- According to a first aspect of the invention, there is provided a sliding door device for a sliding door having a door frame, a suspension rail, and two rollers mounted on the suspension rail, comprising: a sliding door closer having a spring held within a drum and a hydraulic pressure dampening circuit, said sliding door closer being located at one end of the rail; a driven pulley provided at the other end of the rail; a timing belt wound between the door closer and a driven pulley with a first end and a second end of the timing belt being retained at the two rollers; and a tension spring for drawing one of the first and second ends of the timing belt, said spring of said sliding door closer accumulating a spring force in response to a door opening operation of the sliding door through the timing belt, said spring of said sliding door closer releasing the spring force while being braked by said hydraulic dampening circuit during a door closing operation, wherein the sliding door closer is provided on one side in the door opening direction, the driven pulley is provided one side in the door closing direction, and the tension spring is provided at the belt end retained at the roller on one side in the door closing direction.
- According to a second aspect of the invention, there is provided a sliding door device for a sliding door having a door frame, a suspension rail, and two rollers mounted on the suspension rail, comprising: a sliding door closer provided on one side in a door dosing direction of the suspension rail, said door closer having a spring held within a drum and a hydraulic pressure dampening circuit; a driven pulley provided on one side in a door opening direction; a timing belt wound between the door closer, with a first end and a second end of the timing belt being retained at the two rollers; and a tension spring fordrawing one of the first and second ends of the timing belt, said spring of said sliding door closer accumulating a spring force in response to a door opening operation of the sliding doorthrough the timing belt, said spring of said sliding door closer releasing the spring force while being braked by said hydraulic dampening circuit during a door closing operation, wherein said tension spring is provided at the belt end retained at the roller on one side in the door opening direction.
- According to a third aspect of the invention, there is provided a sliding door device for a sliding door having a door frame, a suspension rail, and two rollers mounted on the suspension rail, said sliding door device comprising: a sliding door closer having a spring held within a drum and a hydraulic pressure dampening circuit, said sliding door closer being located on one side in a door closing direction of the rail, a driven pulley provided at the other end of the rail, a timing belt wound between the sliding door closer and the driven pulley with a first end and a second end of the timing belt being retained at the two rollers, respectively, a tension spring for drawing one of the first and second ends of the timing belt, said spring of said sliding door closer accumulating a spring force in response to a door opening operation of the sliding door through the timing belt, said spring of said sliding door closer releasing the spring force while being braked by said hydraulic dampening circuit during a door closing operation, characterized in that a restricting member is provided to restrict a shrinking motion of the tension spring.
- According to the first aspect of the invention, the sliding door closer and the driven pulley are arranged opposite to the conventional arrangement thereof and the tension spring is located at the belt end retained at the roller on the driven pulley side, the external force to be applied in the door closing direction during the door closing operation is directly transmitted to the sliding door closer, so that the door sliding closer is rotated and the tension of the timing belt may be kept unchanged, thus avoiding the tooth jump of the timing belt.
- According to the second aspect of the invention, although the door closer and the driven pulley are arranged in the same manner as in the conventional arrangement, the tension spring is provided at the belt end retained at the roller on the door closer side. When the external force is applied in the door closing direction during the door closing operation, the belt end retained at the roller on the door closer side is apt to be loosen. However, the tension spring connected to the belt end functions to pull the belt end to apply a tension thereon. Therefore, the loosening of the belt end can be avoided.
- According to the third embodiment of the invention, although the door closer and the driven pulley are arranged in the same manner as in the conventional arrangement, a short pipe is provided so as to encase the tension spring between the metallic member and the nut. As a result, the external force to be applied in the door closing direction during the door closing operation is transmitted from the metallic member to the nut to keep the compression length of the tension spring unchanged and to avoid the loosening of the timing belt end to thereby prevent the tooth jump of the timing belt.
- In the accompanying drawings:
- FIG. 1A is a frontal view showing a primary part of a sliding door device according to a first embodiment of the invention;
- FIG. 1 B is a frontal view showing a primary part of a sliding door device according to a second embodiment of the invention;
- FIG. 1C is a frontal view showing a primary part of a sliding door device according to a third embodiment of the invention;
- FIG. 2 is a longitudinal sectional view showing a sliding door closer which is applicable to any one of the first to third embodiments of the invention; and
- FIG. 3 is a frontal view showing a prior art sliding door device.
- FIG. 1A shows a sliding door device in accordance with a first embodiment of the invention. In the sliding door device, two roller units C and D provided at an upper end of the sliding door Aare laid on a suspension rail E formed along an upper side of a door frame B. The sliding door closer 1 is provided on one side of the suspension rail E in the door opening direction, whereas a driven
pulley 2 is provided on the other side of the suspension rail E in the door closing direction. Atiming belt 3 is wound around between the sliding door closer 1 and the drivenpulley 2. Theleft end 3b of thetiming belt 3 which is wound around the door closer 1 is retained at ametallic member 4 mounted on the roller unit D on the sliding door side, whereas theright end 3a of thebelt 3 is retained at ametallic member 5 mounted on the other roller unitC. A bolt 6 is coupled with thebelt end 3a which is retained on the side of the roller unit C. Thebolt 6 is inserted into themetallic member 5 mounted on the roller unit C.A tension spring 7 is wound around thebolt 6 which is threadedly engaged with anut 8 to thereby compress thetension spring 7. Thus, when the sliding door A is opened, aspiral spring 1 b (see FIG. 2) within adrum 1a of the sliding door closer 1 is biased in response to the door opening operation. The spring urged rotational force of thespring 1b causes thedrum 1a to rotate in the door closing direction while being subject to a brake through a hydraulic dampening circuit so that thetiming belt 3 travels to move the sliding door A in the door closing direction. - FIG. 2 shows the sliding door closer 1. The sliding door closer 1 has a
drum 1a which is connected coaxially to a drive shaft 1 c by a screw s. Thetiming belt 3 is wound around thedrum 1a to rotate it. Thedrum 1a has thespiral spring 1b therein. When the door is opened, a rotational torque for rotating thedrum 1b in the door closing direction is accummulated in thespiral spring 1b. The drive shaft 1c has a screw portion 1j which is engaged with aninner surface 1 k of a piston 1f in the form of a cap. The piston 1f is engaged with the screw portion 1j in a manner surrounding the screw portion 1j. The piston 1f is engaged with thehousing 1 d in a state wherein it can not be rotated but moved in the axial direction of acylinder chamber 1e and has acheck valve 1 and a safety valve 1 m in an annular side wall. On the left side of the piston 1f is formed anoil chamber 1e' and on the right side thereof is formed anoil chamber 1e" in thehousing 1d. Further, between the inner surface of the bottom wall of the piston 1f and the end face of the screw portion 1j of the drive shaft 1c is provided an oil chamber 1n n which is connected to theoil chamber 1e" through a spring receiving hole 1 p for receiving a compression spring 1rand a small side hole 1q. - When the door is opened, the drive shaft 1c is rotated in the door opening direction to move the piston 1f to the right as viewed in FIG. 2. At this time, oil in the
chambers 1n and 1e" flows into the chamber 1e'through the check valve 1f. At this time, the compression spring 1 r is compressed to apply a resistance against a door opening movement. Therefore, even when the door is strongly opened, the shock is alleviated. Thereafter, when the door is released, the drive shaft 1c is rotated in the door closing direction opposite to the door opening direction due to the repulsive force of thespiral spring 1 b. At this time, the piston 1f is moved to the left to thereby cause the oil in thechamber 1e' to flow into thechamber 1e" through an adjusting valve (not shown). That is, when the door is closed, the flow rate of the oil is controlled by the adjusting valve to cause the door to close slowly and smoothly. If a shock is exerted on the oil circuit due to some causes, the safety valve 1 m permits the oil in thechamber 1e' to flow into thechamber 1e" to release the oil circuit. Thus, the desired hydraulic dampening circuit is formed. - When the door is opened, an external force in the door opening direction is transmitted through the
tension spring 7 to thenut 8 on the roller unit C and is further transmitted to thetiming belt 3, so that thedrum 1a of the slidingdoor doser 1 is rotated to thereby accumulate the spring force of theinternal spring 1 b. When the hand of the user is released away from the sliding door A in the door opened condition, the accumulated spring force of thespring 1 b of thedoor closer 1 causes thedrum 1 a to rotate to thereby travel thetiming belt 3 and to thereby close the sliding door A without any external force. However, when the door is closed, if some external force is applied to the sliding door A in the door closing direction X, the external force which is applied in the door closing direction X during the door closing operation is directly transmitted to the sliding door closer 1a a through theleft end 3b of the belt to rotate it in an counterclockwise direction Y. The rotation of the sliding door closer 1a applys a tension to the upper path of thebelt 3 thereby to rotate thepulley 2. Then, the tension is transmitted to theright end 3a of thebelt 3. However, since the door A is moved to the right at that time, a big force is not transmitted to thetension spring 7. Therefore, since the compression dimension of thetension spring 7 is kept unchanged and the tension of thetiming belt 3 is almost kept unchanged at theright end 3a, there is no fear that thetiming belt 3 is subjected to the tooth-jump at thedrum 1a of the slidingdoor closer 1. - FIG. 1 B shows a sliding door device in accordance with a second embodiment of the invention.
- In the sliding door device, two roller units C and D provided at an upper end of the sliding door A are laid on a suspension rail E formed along an upperside of a door frame B. The sliding
door closer 1 is provided on one side of the suspension rail E in the door closing direction, whereas a drivenpulley 2 is provided on the other side of the suspension rail E in the door opening direction. Atiming belt 3 is wound around between the slidingdoor closer 1 and the drivenpulley 2. Theright end 3a of thetiming belt 3 which is wound around thedoorcloser 1 is retained atametallic member 5 mounted on the roller unit C on the sliding door closer side, whereas theleft end 3b is retained at a metallic member4 mounted on the other roller unit D. Abolt 6 is coupled with thebelt end 3a which is retained on the side of the roller unit C. Thebolt 6 is inserted into themetallic member 5 mounted on the roller unit C.A tension spring 7 is wound around thebolt 6 and is threadedly engaged with anut 8 to thereby compress thetension spring 7. Thus, when the sliding door A is opened, thespring 1 b (see FIG. 2) within thedrum 1a of the slidingdoor closer 1 is biased in response to the door opening operation. The spring urged rotational force of thespring 1b causes thedrum 1a to rotate in the door closing direction while being subjected to a brake through a hydraulic dampening circuit so that thetiming belt 3 travels to move the sliding door A in the door closing direction. - When the external force for closing the sliding door A during the door closing operation is applied, the
door closer 1 is not smoothly rotated as explained in BACKGROUND OF THE INVENTION. Therefore, theright end 3a of thebelt 3 is going to loosen. However, thetension spring 7 pulles theright end 3a to the left to apply a tension to theright end 3a thereof. Therefore, the tension of thetiming belt 3 is maintained, so that any loosening on thebelt end 3a is not allowed. Therefore, even if the external force is applied to thedrum 1a of the slidingdoor doser 1 during the door closing operation, it is possible to avoid the tooth jump of the timing belt. - FIG. 1C shows a sliding door device in accordance with a third embodiment of the invention. In the sliding door device, two roller units C and D provided at an upper end of the sliding door Aare laid on a suspension rail E formed along an upper side of a door frame B. The sliding
door closer 1 is provided on one side of the suspension rail E in the door closing direction, whereas a drivenpulley 2 is provided on the otherside of the suspension rail E in the door opening direction. Atiming belt 3 is wound around between the slidingdoor closer 1 and the drivenpulley 2. Theend 3a of thetiming belt 3 which is wound around thedoor closer 1 is retained at ametallic member 4 mounted on the roller unit C on the side of the slidingdoor closer 1, whereas theother end 3b is retained at ametallic member 5 mounted on the other roller unit D. Abolt 6 is coupled with thebelt end 3b which is retained on the side of the roller unit D. Thebolt 6 is inserted into themetallic member 5 mounted on the roller unit D.A tension spring 7 is wound around thebolt 6, encased within a shortsolid pipe 11 as a restricting member for restricting the shrinking motion of thespring 7 over a predetermined length, and threadedly engaged with anut 8. Thus, when the sliding door A is opened, thespring 1 b (see FIG. 2) within the drum la of the slidingdoor closer 1 is biased in response to the door opening operation. The spring urged rotational force of thespring 1 b causes thedrum 1a to rotate in the door closing direction while being subjected to a brake through a hydraulic dampening circuit so that thetiming belt 3 travels to move the sliding door A in the door closing direction. - When the external force for closing the sliding doorA is applied to the sliding doorAduring the door closing operation, the
left end 3b of thebelt 3 is pushed in the direction Z as explained in BACKGROUND OF THE INVENTION. However, the movement of thenut 8 is stopped by thepipe 11 thereby not permitting thespring 7 to shrink. Therefore, the length of thetension spring 7 is kept unchanged so that the tension of the timing belt is kept. Any loosening of thetension spring 7 will not occur. Thus, the tooth jump of thetiming belt 3 may be avoided. - As described above, according to any of the first to third embodiments of the invention, even if the external force is applied to the door during the doorclos- ing operation, any tooth jump of the timing belt will not occur. Thus, a tooth jump preventing roller may be dispensed with. It is possible to reduce the number of the mechanical parts and the cost therefor. The assembling work may be simplified. Furthermore, the closer mounting members may be made compact in size.
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31688/92 | 1992-04-14 | ||
JP3168892U JP2561536Y2 (en) | 1992-04-14 | 1992-04-14 | Sliding door device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0567262A1 true EP0567262A1 (en) | 1993-10-27 |
EP0567262B1 EP0567262B1 (en) | 1997-10-22 |
Family
ID=12338026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930302837 Expired - Lifetime EP0567262B1 (en) | 1992-04-14 | 1993-04-13 | Sliding door device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0567262B1 (en) |
JP (1) | JP2561536Y2 (en) |
DE (1) | DE69314689T2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6735820B1 (en) * | 2002-06-13 | 2004-05-18 | Roltec Products, Inc. | Apparatus for closing sliding doors |
US7124469B2 (en) * | 2003-07-03 | 2006-10-24 | Alex Tsekhanovsky | Automatic sliding door closure device |
DE202008012990U1 (en) | 2008-09-30 | 2008-12-04 | Bortoluzzi Mobili S.R.L. | Device for damping an opening and closing movement of shutters, in particular for furniture |
US11246231B2 (en) * | 2012-02-10 | 2022-02-08 | Chatsworth Products, Inc. | Door closer mechanism for hot/cold aisle air containment room |
WO2023165064A1 (en) * | 2022-03-04 | 2023-09-07 | 广东玫瑰岛卫浴科技有限公司 | Shower room having hidden buffer structure |
EP3880925B1 (en) * | 2018-11-13 | 2023-12-27 | Julius Blum GmbH | Arrangement for guiding a movable furniture part |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3961668B2 (en) * | 1998-05-06 | 2007-08-22 | 美和ロック株式会社 | Sliding door closer |
DE29920016U1 (en) | 1999-11-13 | 2000-01-27 | Möller, Erik, 50939 Köln | Refrigerators with a sliding door |
ES2393769B1 (en) * | 2011-05-12 | 2013-11-04 | Klein Ibérica, S.A. | AUTONOMOUS CLOSURE DEVICE FOR SLIDING DOORS. |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4330960A (en) * | 1979-12-18 | 1982-05-25 | Dorma-Baubeschlag Gmbh & Co. Kg. | Closing arrangement for sliding doors and the like |
-
1992
- 1992-04-14 JP JP3168892U patent/JP2561536Y2/en not_active Expired - Lifetime
-
1993
- 1993-04-13 EP EP19930302837 patent/EP0567262B1/en not_active Expired - Lifetime
- 1993-04-13 DE DE1993614689 patent/DE69314689T2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4330960A (en) * | 1979-12-18 | 1982-05-25 | Dorma-Baubeschlag Gmbh & Co. Kg. | Closing arrangement for sliding doors and the like |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 015, no. 006 (M-1066)(4534) 8 January 1991 & JP-A-02 256 779 ( SANWA SHUTTER CORP ) 17 October 1990 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6735820B1 (en) * | 2002-06-13 | 2004-05-18 | Roltec Products, Inc. | Apparatus for closing sliding doors |
US7124469B2 (en) * | 2003-07-03 | 2006-10-24 | Alex Tsekhanovsky | Automatic sliding door closure device |
DE202008012990U1 (en) | 2008-09-30 | 2008-12-04 | Bortoluzzi Mobili S.R.L. | Device for damping an opening and closing movement of shutters, in particular for furniture |
US11246231B2 (en) * | 2012-02-10 | 2022-02-08 | Chatsworth Products, Inc. | Door closer mechanism for hot/cold aisle air containment room |
EP3880925B1 (en) * | 2018-11-13 | 2023-12-27 | Julius Blum GmbH | Arrangement for guiding a movable furniture part |
WO2023165064A1 (en) * | 2022-03-04 | 2023-09-07 | 广东玫瑰岛卫浴科技有限公司 | Shower room having hidden buffer structure |
Also Published As
Publication number | Publication date |
---|---|
DE69314689D1 (en) | 1997-11-27 |
JP2561536Y2 (en) | 1998-01-28 |
EP0567262B1 (en) | 1997-10-22 |
DE69314689T2 (en) | 1998-03-05 |
JPH0583260U (en) | 1993-11-12 |
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