Retracting device and method of manufacturing the same

Abstract

To provide a retracting device capable of pulling a spring by a component of the retracting device without using a dedicated tool.SOLUTION: In this retracting device provided with a slender cover member 2, a slider 3 movable in the longitudinal direction in the cover member 2, and a spring for applying energizing force to the slider 3, one end of the spring is connected to the slider 3, and the other end is connected to a spring locking member 7. The spring locking member 7 enters the cover member 2 and is movable in the longitudinal direction in the cover member 2. The spring locking member 7 is held on the end 2b of the cover member 2 by using a holding member 8.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a retracting device for retracting a sliding door to a closed position and / or an open position. [Background technology]

[0002] A retraction device that retracts a sliding door to a closed position and / or an open position is known (see Patent Document 1). When a user closes a sliding door that is in the open position to a predetermined position, the retraction device automatically retracts the sliding door to the closed position and closes it. Bidirectional retraction devices that can retract a sliding door not only to the closed position but also to the open position are becoming mainstream. In a bidirectional retraction device, when a user opens a sliding door that is in the closed position to a predetermined position, the retraction device automatically retracts the sliding door to the open position and opens it.

[0003] The retraction device includes an elongated cover member, a slider that can move longitudinally within the cover member, and a spring that applies a biasing force to the slider. One end of the spring is connected to the slider, and the other end is connected to a lid member attached to the longitudinal end of the cover member. When the sliding door is in the open position and is closed to a predetermined position, the slider catches the trigger, becoming movable, and the slider is moved within the cover member by the spring. This movement of the slider automatically closes the sliding door. In the case of a bidirectional retraction device, two sliders and two springs are provided. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2020 / 012780 Summary of the Invention [Problem to be solved by the invention]

[0005] When assembling a conventional retraction device, a special tool is used to pull the other end of the spring out of the cover member, the other end of the spring is connected to the lid member, and then the lid member is attached to the end of the cover member. The conventional retraction device has a problem in that it is necessary to use a special tool to pull the spring out of the cover member.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a retraction device and a manufacturing method thereof that can retract a spring using the components of the retraction device without using a dedicated jig. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a retraction device comprising an elongated covering member, a slider that can move longitudinally within the covering member, and a spring that applies a biasing force to the slider, wherein one end of the spring is connected to the slider and the other end is connected to a spring locking member that can enter the covering member and move longitudinally within the covering member, and the spring locking member is held at the end of the covering member using a holding member.

[0008] Another aspect of the present invention is a method for manufacturing a retraction device, comprising the steps of: connecting one end of a spring that applies a biasing force to the slider to the slider and connecting the other end to a spring locking member; placing the spring locking member, the spring, and the slider in an elongated covering member; moving the spring locking member in the covering member in the longitudinal direction; and holding the spring locking member at the end of the covering member using a holding member.

[0009] In the present invention, the retraction device may be a bidirectional retraction device or a unidirectional retraction device. [Effects of the Invention]

[0010] According to the present invention, the spring can be pulled by the spring locking member, which is a component of the retraction device, without using a dedicated jig. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view of the appearance of a retraction device according to an embodiment of the present invention; [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. 1 is a side view of the retraction device in the guide rail. [Figure 5] 10A to 10C are diagrams showing a process of setting the slider, the damper case, the spring locking member, and the cover member in an assembly jig. [Figure 6] 10A and 10B are diagrams showing a process of connecting springs. [Figure 7] 10A to 10C are diagrams showing a process of inserting the spring locking member, the spring, and the slider into the covering member. [Figure 8] 10A and 10B are diagrams showing a process of holding the spring locking member at the end of the cover member using a holding member. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a retraction device and a manufacturing method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the retraction device and the manufacturing method thereof according to the present invention can be embodied in various forms and are not limited to the embodiments described herein. The present embodiment is provided with the intention of enabling those skilled in the art to fully understand the invention by fully disclosing the specification.

[0013] 1 and 2, a slider 3 is provided in the elongated covering member 2 so as to be movable in the length direction of the covering member 2, and a spring 5 is provided to apply a biasing force to the slider 3. One end of the spring 5 is connected to the slider 3, and the other end of the spring 5 is connected to a spring locking member 7. The spring locking member 7 enters the covering member 2 and is movable in the length direction within the covering member 2. The spring locking member 7 is held at an end 2b of the covering member 2 by a holding member 8.

[0014] The retraction device 1 of this embodiment is a bidirectional retraction device and includes two sliders 3 and 4 and two springs 5 ​​and 6. One of the two sliders 3 and 4 is the slider 3, and one of the two springs 5 ​​and 6 is the spring 5. One end of the other spring 6 is connected to the other slider 4, and the other end of the other spring 6 is connected to a lid member 9 that is inserted into the end 2c of the cover member 2.

[0015] The configuration of each part of the retraction device 1 will be described in detail. The covering member 2 has a generally U-shaped cross section that opens upward, and is elongated in the direction in which the sliding door opens and closes. Triggers 11, 12 (see Figure 4) fit into openings 2a that extend along the covering member 2. A retaining member 8 having an insertion portion 8a is inserted into end 2b of the covering member 2. A spring locking member 7 is hooked onto the retaining member 8. The spring locking member 7 is fastened to the covering member 2 using screws 13. A lid member 9 having an insertion portion 9a is inserted into end 2c of the covering member 2. The lid member 9 is fastened to the covering member 2 using screws 14. The covering member 2 may be manufactured by sheet metal processing, or by extrusion molding of resin or metal.

[0016] As shown in Figure 3, the hook 24 of the slider 3 can engage with the recess 9b of the lid member 9, which is inserted into the end 2c of the covering member 2. When the hook 24 is engaged with the recess 9b, the movement of the slider 3 is restricted and the slider 3 is held in a standby position. When the sliding door, which is in the closed position, is opened to a predetermined position, the slider 3 catches a trigger 11 (see Figure 4) provided on the trailing edge of the frame. Then, the hook 24 disengages from the recess 9b, allowing the slider 3 to move, and the force of the spring 5 causes the slider 3 to move relatively in the length direction with respect to the covering member 2. As the slider 3 moves relative to the covering member 2, the sliding door is automatically retracted to the open position.

[0017] Similarly, the hook 24 of the slider 4 can engage with the recess 7b of the spring locking member 7 held at the end 2b of the covering member 2. When the hook 24 is engaged with the recess 7b, the movement of the slider 4 is restricted and the slider 4 is held in a standby position. When the sliding door, which is in the open position, is closed to a predetermined position, the slider 4 catches a trigger 12 (see FIG. 4) provided on the door edge side of the frame. Then, the hook 24 disengages from the recess 7b, allowing the slider 4 to move, and the force of the spring 6 causes the slider 4 to move relatively in the longitudinal direction with respect to the covering member 2. As the slider 4 moves relative to the covering member 2, it is automatically retracted to the closed position. Note that the slider 4 may be used to retract the sliding door to the open position, and the slider 3 may be used to retract the sliding door to the closed position.

[0018] The configuration of the slider 3 will now be described in detail. As shown in FIG. 3, the slider 3 includes a slider body 21 connected to the spring 5, a hook 24 swingably supported by the slider body 21, a control member 23 that controls the swing of the hook 24, and a brake adjustment spring 22 interposed between the slider body 21 and the control member 23. As described above, the hook 24 is engageable with a recess 9b provided in the cover member 9. FIG. 3 shows the state before the hook 24 engages with the recess 9b. When the slider 3 is moved to the standby position shown in FIG. 3, the spring force of the brake adjustment spring 22 causes the hook 24 to swing clockwise, and the hook 24 engages with the recess 9b. The control member 23 is provided to prevent the engagement between the hook 24 and the recess 9b from being accidentally released. When the hook 24 is engaged with the recess 9b, the control member 23 is positioned above the hook 24 to prevent the hook 24 from swinging counterclockwise.

[0019] When the sliding door is moved to a predetermined position in the opening direction, the trigger 11 (see Figure 4) presses the control member 23, which in turn presses the hook 24, causing the hook 24 to swing counterclockwise, disengaging from the recess 9b of the cover member 9. At the same time, the trigger 11 is caught between the hook 24 and the control member 23.

[0020] Like the slider 3, the slider 4 also comprises a slider body 21 connected to the spring 6, a hook 24 swingably supported by the slider body 21, a control member 23 that controls the swing of the hook 24, and a brake adjustment spring 22 interposed between the slider body 21 and the control member 23. The configuration of the slider 4 is the same as the configuration of the slider 3, so the same reference numerals are used and a description thereof will be omitted.

[0021] The configuration of the sliders 3, 4 is not limited to the above. For example, the control member 23 and the brake adjustment spring 22 may be omitted, a guide groove may be formed in the cover member 9 or the covering member 2, and a protrusion that fits into the guide groove may be formed on the hook 24, so that the attitude of the hook 24 is controlled by the guide groove.

[0022] As shown in FIG. 2, two linear dampers 15 and 16 are arranged in series between slider 3 and slider 4. When slider 3 catches trigger 11 (see FIG. 4) and moves, the two linear dampers 15 and 16 contract simultaneously, braking the movement of slider 3. Also, when slider 4 catches trigger 12 (see FIG. 4) and moves, the two linear dampers 15 and 16 contract simultaneously, braking the movement of slider 4. The cylinder portion of linear damper 15 and the cylinder portion of linear damper 16 are supported by a damper base 17 that is slidably provided within covering member 2. The rod portion of linear damper 16 is connected to slider 3. The rod portion of linear damper 15 is connected to slider 4.

[0023] 2, the vertical cross-sectional shape of the spring locking member 7 is substantially the same as the vertical cross-sectional shape of the interior of the covering member 2, and the spring locking member 7 is slidable in the longitudinal direction within the covering member 2. The spring locking member 7 is formed with a locking portion 7a to which the other end of the spring 5 is connected. The spring locking member 7 is separate from the slider 4.

[0024] The spring locking member 7 is hooked onto a holding member 8 that is inserted into the end 2b of the covering member 2. The spring locking member 7 is formed with a hook-shaped portion 7c that engages with the holding member 8. The spring locking member 7 is fastened to the covering member 2 with a screw 13. An escape groove 7d is formed on the top surface of the spring locking member 7 to avoid interference with the trigger 12.

[0025] The holding member 8 is inserted into the end 2b of the covering member 2. The holding member 8 is formed with an insertion portion 8a that is inserted into the covering member 2, and a protrusion 8b that abuts against the end surface 2b1 of the covering member 2. The holding member 8 also has a complementary hook portion 8c that engages with the hook-shaped hook portion 7c of the spring locking member 7. A runner 18 from which the sliding door is suspended is fastened to the holding member 8 using a screw 19. The runner 18 includes a roller runner 18a and a bracket 18b that is attached to the roller runner 18a. The sliding door is attached to this bracket 18b.

[0026] The lid member 9 is inserted into the end 2c of the covering member 2. The lid member 9 is formed with an insertion portion 9a that is inserted into the covering member 2, and a protrusion 9c that abuts against the end surface 2c1 of the covering member 2. The lid member 9 is fastened to the covering member 2 with a screw 14. A pair of rollers 20, one on the left and one on the right, are attached to the lid member 9.

[0027] As shown in Figure 4, the retracting device 1 is inserted into a guide rail 27 attached to a frame. A sliding door is suspended from the runner 18. When the sliding door is opened or closed, the retracting device 1 moves within the guide rail 27.

[0028] A method for manufacturing the retraction device 1 according to this embodiment will be described. First, as shown in FIG. 2, the cylinder portions of the linear dampers 15 and 16 are fitted into the damper base 17, the rod portion of the linear damper 16 is connected to the slider 3, and the rod portion of the linear damper 15 is connected to the slider 4. Next, as shown in FIG. 5, the two sliders 3 and 4 and the damper base 17 are turned upside down, brought close to each other, and set on an assembly jig 28. A cover member 9 and a spring locking member 7 are also set on the assembly jig 28. A slider positioning portion 28a, a hook positioning portion 28b, a cover member positioning portion 28c, and a spring locking member positioning portion 28d are formed on the assembly jig 28. The assembly jig 28 can be separated into two parts.

[0029] 6, one end of spring 5 is connected to slider 3, and the other end of spring 5 is connected to spring locking member 7. Similarly, one end of spring 6 is connected to slider 4, and the other end of spring 6 is connected to cover member 9.

[0030] Next, as shown in Figure 7, the covering member 2 is slid to place the spring locking member 7, springs 5 ​​and 6, and sliders 3 and 4 inside the covering member 2. The covering member 2 is slid until its end surface 2c1 abuts against the protrusion 9c of the lid member 9. Next, the lid member 9 is fastened to the covering member 2 using the screw 14 (see Figure 8).

[0031] Next, as shown in FIG. 8 , the retraction device 1 is turned upside down and the assembly jig 28 is removed. The spring locking member 7, which is inserted into the cover member 2, is moved using the opening 2a of the cover member 2, until the hook portion 7c of the spring locking member 7 is exposed from the end 2b of the cover member 2. Next, the holding member 8 is inserted into the spring locking member 7, and the hook portion 8c of the holding member 8 engages with the hook portion 7c of the spring locking member 7. When the holding member 8 is released, the holding member 8 and the spring locking member 7 are inserted into the cover member 2 by the pulling force of the spring 5. Next, the spring locking member 7 is fastened to the cover member 2 using the screw 13. The brake adjustment springs 22 of the sliders 3 and 4 may be installed at this stage or may be installed in advance. Finally, the slider 3 is moved toward the cover member 9 to the standby position, where the hook 24 of the slider 3 engages with the recess 9b of the cover member 9. Similarly, when the slider 4 is moved toward the spring locking member 7 to the standby position, the hook 24 of the slider 4 engages with the recess 7b of the spring locking member 7.

[0032] The retraction device 1 and its manufacturing method according to this embodiment have the following advantages: The spring 5 can be pulled by the spring locking member 7, which is a component of the retraction device 1. In addition, the amount of tension required for the spring 5 is small, making it easy to assemble the retraction device 1.

[0033] Since the spring locking member 7 is hooked onto the holding member 8 that is inserted into the end 2b of the covering member 2, the force of the spring 5 can be used to insert the holding member 8 into the end 2b of the covering member 2.

[0034] The retraction device 1 according to this embodiment is effective as a bidirectional retraction device, although it is not particularly limited thereto.

[0035] In the above embodiment, the spring locking member 7 is held at the end 2b of the covering member 2 using a retaining member 8 inserted into the end 2b of the covering member 2, but the spring locking member 7 may also be held at the end 2b of the covering member 2 using a retaining member such as a pin that passes through the covering member 2 and the spring locking member 7. [Explanation of symbols]

[0036] 1...Retraction device 2...Covering member 2b, 2c...End of covering member 3,4...Slider 5,6...Spring 7...Spring locking member 8...Retaining member 8a...insertion part 9...Cover member

Claims

1. an elongated covering member; a slider that is movable in a longitudinal direction within the covering member; a spring that applies a biasing force to the slider, One end of the spring is connected to the slider, and the other end is connected to a spring locking member; the spring locking member is inserted into the cover member and is movable longitudinally within the cover member; A retraction device that uses a retaining member to hold the spring locking member at the end of the cover member.

2. 2. The retraction device according to claim 1, wherein the spring locking member is hooked onto the holding member having an insert portion that is inserted into the end of the cover member.

3. The retraction device is a bidirectional retraction device having two sliders and two springs; one of the two sliders is the slider, one of the two springs is the spring, The retraction device according to claim 1 or 2, characterized in that one end of the other of the two springs is connected to the other of the two sliders, and the other end is connected to a cover member having an insertion portion that is inserted into the end of the cover member.

4. a step of connecting one end of a spring that applies a biasing force to the slider to the slider and connecting the other end to a spring locking member; placing the spring locking member, the spring, and the slider in an elongated covering member; a step of longitudinally moving the spring locking member inside the covering member and holding the spring locking member at the end of the covering member using a holding member.

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