JP2008285933A - Slide assisting device for sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a structure of a driving mechanism to reduce manufacturing cost and facilitate the adjustment of storing-up and exertion of assisting force of the driving mechanism. <P>SOLUTION: This slide assisting device for the sliding door is provided with the driving mechanism 4 for storing up the assisting force when the sliding door slides in one direction and exerting the assisting force when the sliding door slides in the other direction and a casing 1 supporting the driving mechanism 4 and provided in the inside of a rail R for guiding travel of a traveling member 2 of the sliding door. The driving mechanism 4 is composed of a spring 41 for storing up and exerting the assisting force and a fluid pressure damper 43 for suppressing the exertion of the assisting force of the spring 41. In this driving mechanism 4, the spring 41 and the fluid pressure damper 43 are parts being independent from each other, the spring 41 is arranged outside the casing 1, and the fluid pressure damper 43 is arranged inside the casing 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention belongs to a technical field related to a sliding door slide assist device for assisting an operation of opening and closing a sliding door.

  Recently, the improvement of each part that guides the opening and closing of sliding doors has progressed, and it has become possible to smoothly open and close even sliding doors that are heavy and heavy with a decorative decoration, with a small operating force. . However, the sliding door opens and closes too smoothly, and the operating force for opening and closing may be incorrect, causing the sliding door to collide violently with the door frame, causing the sliding door, door frame, etc. to be damaged, or the sliding door to be in a half-open state due to reaction. It is happening. For this reason, the usefulness of the sliding assist device of the sliding door which assists the operation which opens and closes a sliding door so that it can be opened and closed reliably without making a sliding door violently collide with a door frame is increasing.

Conventionally, as a sliding door slide assist device, for example, the following devices are known.
In Japanese Patent Laid-Open No. 2006-169723, a driving mechanism that accumulates an assist force during a sliding operation in one direction of the sliding door and exhibits the assist force during a sliding operation in the other direction is supported by the casing. There is described a sliding door slide assist device installed inside a rail for guiding the traveling of a sliding door traveling member. This assist force suppresses the rapid sliding motion of the sliding door and maintains the sliding motion until the sliding door is completely opened and closed.

  The sliding assist device for sliding doors according to Patent Document 1 employs a drive mechanism that includes a spring that accumulates and exhibits assist force and a fluid pressure damper that suppresses the exertion of the assist force of the spring. In the drive mechanism, a spring is built in a fluid pressure damper composed of a cylinder type air damper, and the spring and the fluid pressure damper are integrated as a cylinder.

  In the sliding door slide assist device according to Patent Document 1, since the drive mechanism in which the spring and the fluid pressure damper are integrated is adopted, the structure of the drive mechanism is complicated and the manufacturing cost is increased. There is a problem that it is difficult to adjust the assist force accumulation and performance.

  The present invention has been made in view of such problems, and it is possible to reduce the manufacturing cost by simplifying the structure of the drive mechanism, and to facilitate the accumulation of the assist force of the drive mechanism and the adjustment of the display. It is an object to provide a slide assist device.

  In order to solve the above-described problems, the sliding door slide assist device according to the present invention employs means described in each of the claims.

  That is, according to the first aspect of the present invention, a driving mechanism that accumulates assisting force during sliding operation in one direction of the sliding door and exhibits assisting force during sliding operation in the other direction, and a sliding mechanism that supports the driving mechanism and travels the sliding door. A sliding assist device for a sliding door comprising a spring installed inside a rail for guiding the travel of a member, and a drive mechanism that stores and exerts an assist force and a fluid pressure damper that suppresses the exertion of the assist force of the spring The drive mechanism is characterized in that the spring and the fluid pressure damper are separate parts, the spring is disposed outside the casing, and the fluid pressure damper is disposed inside the casing.

  In this means, since the spring and fluid pressure damper of the drive mechanism are separate parts, there is no need for accuracy and structure to integrate the spring and fluid pressure damper into the drive mechanism. Further, since the spring of the drive mechanism is arranged outside the casing, the spring can be exchanged and the assist force of the drive mechanism can be accumulated and adjusted.

  According to a second aspect of the present invention, in the sliding assist device for the sliding door according to the first aspect, the spring of the driving mechanism is supported on the upper part of the casing and is arranged on the upper side inside the rail.

  In this means, the drive mechanism spring is supported on the upper portion of the casing and disposed on the upper side of the rail, so that it is difficult for dust or the like to adhere to the drive mechanism spring.

  According to a third aspect of the present invention, in the sliding assist device for the sliding door according to the second aspect, a pair of springs of the drive mechanism are supported relative to the side of the upper part of the casing.

  In this means, a pair of springs of the drive mechanism is supported relative to the side of the upper part of the casing, so that the balance of accumulation and display of assist force in the springs of the drive mechanism is good.

  According to a fourth aspect of the present invention, in the sliding assist device for the sliding door according to the first aspect, the spring of the drive mechanism is supported by the lower part of the casing and is exposed from the opening part of the lower part of the rail.

  In this means, the spring of the drive mechanism is supported by the lower part of the casing and is exposed and arranged from the open part of the lower part of the rail, so that dust or the like is hardly attached to the spring of the drive mechanism.

  According to a fifth aspect of the present invention, in the sliding door slide assist device according to the fourth aspect, the spring of the drive mechanism can be attached to and detached from the casing from below the rail.

  With this means, the spring of the drive mechanism can be attached to and detached from the casing from below the rail, so that the spring of the drive mechanism can be easily exchanged from below while being installed on the rail.

  According to a sixth aspect of the present invention, in the sliding assist device for the sliding door according to any one of the first to fifth aspects, the casing is formed into an elongated cylindrical shape by fitting an upper frame member and a lower frame member having a polygonal cross-sectional shape. It is formed.

  In this means, the casing is formed into an elongated cylindrical shape by fitting the upper frame member and the lower frame member whose cross-sectional shape is an asymmetric polygon, so that the casing is not a quadrilateral polygon. The rigidity becomes higher.

  According to a seventh aspect of the present invention, in the sliding door sliding assist device of the sixth aspect, the casing is provided with a joining surface that is joined to a side portion of the upper frame member and the lower frame member by a large area by fitting, and the joining surfaces are mutually connected. Engaging protrusions and engaging grooves are provided.

  In this means, the casing is characterized in that a part of the upper surface of the upper frame member is notched and bent toward the inside, and a support piece for supporting a part of the drive mechanism is provided.

  Further, according to claim 8, in the sliding assist device for sliding doors according to claim 6 or 7, the casing is formed by bending a part of the upper surface of the upper frame member so as to bend toward the inside, and supporting pieces for supporting a part of the drive mechanism Is provided.

  In this means, the support piece for supporting a part of the driving mechanism is formed by bending a part of the upper surface of the upper frame member of the casing so as to be bent toward the inside, thereby providing the casing with an uneven part that complements the rigidity. It is formed.

  Further, in claim 9, in the sliding assist device for sliding doors according to any one of claims 6 to 8, the casing is provided with a dam portion that is slightly raised on the bottom surface in the vicinity of both end portions of the lower frame member. It is characterized by.

  In this means, the dam part forms an uneven structure on the lower frame member of the casing to increase the rigidity of the casing, and when the fluid pressure damper of the drive mechanism is an oil damper, the dam part functions as an oil reservoir. To do.

  In the sliding assist device for sliding doors according to the present invention, since the spring and fluid pressure damper of the drive mechanism are separate parts, there is no need for accuracy and structure for integrating the spring and fluid pressure damper into the drive mechanism. Therefore, there is an effect that the structure of the drive mechanism can be simplified and the manufacturing cost can be reduced. Moreover, since the spring of the drive mechanism is arranged outside the casing, the spring can be exchanged to accumulate the assist force of the drive mechanism and adjust the display of the assist force. There is an effect that adjustment becomes easy.

  The best mode for carrying out the sliding assist device for sliding doors according to the present invention will be described below with reference to the drawings.

  FIGS. 1-11 shows the 1st example of the best form for implementing the sliding assistance apparatus of the sliding door which concerns on this invention.

  In the first example, the sliding door D is installed at a part of the width of the sliding door D and assists the closing operation of the sliding door D. That is, an assist force is accumulated and exhibited in a part of the sliding motion of the sliding door D (so-called partial assist type).

  In the first example, as shown in FIGS. 1 and 2, a traveling member 2 having a wheel structure connected to a sliding door D is attached to one end portion of an elongated cylindrical casing 1, and the sliding door D is attached to the other end portion. A finished product that is installed with a traveling guide member 3 with a simplified wheel structure that is not connected, and is inserted and installed as it is inside a box-shaped rail R that is attached to a duck, door frame, ceiling surface, etc. Consists of.

  The casing 1 has a polygonal upper frame member 11 and a lower frame member 12 (see FIG. 3) that have a U-shaped cross-sectional chamfered corner (see FIG. 3), and both ends are end members 13 and 14 of the block body. It is formed in an elongated cylindrical shape that is closed with.

  The upper frame member 11 and the lower frame member 12 of the casing 1 are asymmetrically bent from a stainless steel plate or the like, and are provided with bonding areas 111 and 121 having large areas that are bonded to the side portions by fitting. The engaging projections 112 and the engaging grooves 122 formed by cutting and raising the notches in the surfaces 111 and 121 are fitted and assembled at a proper position with a certain strength.

  The upper frame member 11 of the casing 1 is provided with a support piece 113 that is partly cut out at a substantially central portion of the upper surface and bent so as to be L-shaped inside, and has a window shape in which the upper support piece 113 is formed. A narrow slide groove 114 for moving the slider 5 described later is provided to the vicinity of one end member 13 of the casing 1 continuously to the notch of the casing 1, and is described later in succession to the end of the slide groove 114 on the upper surface. A window-shaped locking groove 115 for displacing the slider 5 is provided. The edge surface along the slide groove 114 is a flat slide surface 116 for moving the slider 5 described later. As shown in detail in FIGS. 5, 6, and 9, the locking groove 115 is provided with a locking space 115 a as a space between one end member 13 inside the casing 1, and the locking space 115 A taper guide portion 115b that is continuously inclined and bent from the end portion of the slide surface 116 toward the 115a is provided, and is bent in a direction substantially orthogonal to the slide surface 116 continuously from the taper guide portion 115b. A locking portion 115c that is a free end that does not reach the lower frame member 12 is provided. Note that the locking groove 115 is provided with a notch 115d with a slight width a in the side portion of the upper frame member 11 of the taper guide portion 115b. Etc. are not generated.

  As shown in FIGS. 1, 2, 6, and 9, the lower frame member 12 of the casing 1 is provided with a dam portion 123 that is slightly raised on the bottom surface near both ends.

  The end members 13 and 14 of the casing 1 are formed of a synthetic resin material, and are engaged with the upper frame member 11 and the lower frame member 12 of the casing 1 and fixed by screws or the like. The polygonal shape of the frame member 12 is maintained, and foreign matter is prevented from entering the casing 1.

  One end member 13 of the casing 1 is detachably attached to the traveling member 2 with screws so that the traveling member 2 corresponding to the sliding door D can be selected. The end member 13 is provided with a step portion 131 that defines a locking space 115 a of the locking groove 115 of the upper frame member 11 of the casing 1, and a lower portion of the step portion 131 serves as a protruding piece 132, The lower end portion of the locking portion 115c of the locking groove 115 of the frame member 11 is in contact with the lower end portion as a member that returns and prevents deformation.

  The other end member 14 of the casing 1 is integrated with the travel guide member 3. Accordingly, when a sliding structure other than the wheel structure is selected as the traveling guide member 3, the end member 14 is replaced and attached to the casing 1.

  The casing 1 supports a drive mechanism 4 that accumulates and exhibits assist force.

  As shown in FIGS. 1 to 4 and 6, the drive mechanism 4 includes a spring 41 that expands and contracts to accumulate and exert an assist force, and a spring mounting bracket that attaches the spring 41 between the casing 1 and a slider 5 described later. 42 and a fluid pressure damper 43 that suppresses the exertion of the assist force by the spring 41. The spring 41 is composed of a coil spring, and the same spring 41 is used in consideration of the balance of assist force accumulation and display. Thus, a pair is arranged. The spring mounting bracket 42 consists of a pair attached to the upper frame member 11 of the casing 1 and a slider 5 which will be described later. The spring mounting bracket 42 is attached to and detached from the upper frame member 11 of the casing 1 and the slider 5 which will be described later by engagement and insertion. A mounting piece 422 on which a terminal of the spring 41 is hung is erected on a base 421 provided with a mounting window that can be mounted, and the terminal of the spring 41 is detachably mounted on the mounting piece 422 with a stopper 423. The fluid pressure damper 43 is composed of a cylinder type oil damper that generates an oil pressure resistance when the rod 432 moves forward and backward from the cylinder 431 filled with oil and the rod 432 moves backward. The cylinder 431 is disposed inside the casing 1. The other end member 14 and the support piece 113 of the upper frame member 11 are sandwiched and locked, and the rod 432 is advanced toward the one end member 13 inside the casing 1.

  The casing 1 supports a slider 5 serving as a switching member for storing and exhibiting assist force.

  As shown in FIGS. 4 and 6 to 11, the slider 5 is made of a synthetic resin material having a low friction with respect to the casing 1 and having a good sliding property. A stop 52 is rotatably supported by a support shaft 53. The slider body 51 is connected to the rod 432 of the fluid pressure damper 43 of the drive mechanism 4 so that the cross-sectional shape thereof is substantially the same as the cross-sectional shape of the casing 1, and the slide groove 114 of the upper frame member 11 inside the casing 1 is almost entirely. Is a projecting shape in which the mounting window of the base portion 421 of the spring mounting bracket 42 of the drive mechanism 4 is locked to the upper surface of the casing 1 on the other end member 14 side. An attachment portion 511 is provided, and an accommodation space portion 512 that encloses a large portion of the movable locking portion 52 from the end surface on the one end member 13 side of the casing 1 to form a space for ensuring rotation is dug. . The movable latching portion 52 has a lower half portion whose width matches the width of the accommodating space portion 512 of the slider main body 51, and the lower half portion has the slider main body 51 and the slide groove 114 of the upper frame member 11 inside the casing 1. The arrangement length is made slidable, and a locking portion 521 for locking a receiving member 6 to be described later is provided in the approximate center of the upper half, and the locking portion 521 in the upper half is interposed. A first inclined portion 522 having an inclined surface having the same width b as the width of the lower half portion is provided on the other end member 14 side of the casing 1, and one of the casings 1 via the upper half engaging portion 521 is provided. The width c of the end member 13 is larger than the width of the lower half (the width of the sliding groove 114 of the upper frame member 11 of the casing 1) and substantially coincides with the width of the locking groove 115 of the upper frame member 11 of the casing 1. A second inclined portion 523 having an inclined surface is provided. Accordingly, the movable locking portion 52 is slid with the lower surface of the second inclined portion 523 in contact with the sliding surface 116 of the upper frame member 11 of the casing 1, and the locking groove 115 of the upper frame member 11 of the casing 1. The second inclined portion 523 is rotated and displaced so as to be dropped into the locking groove 115. The support shaft 53 passes through substantially the center of the movable locking portion 52 and is supported at the corner of the accommodation space 512 of the slider body 51.

  A receiving member 6 that is linked to the slider 5 is attached to the rail R.

  As shown in FIGS. 1 and 6 to 11, the receiving member 6 includes a base piece 61 that is in contact with the ceiling inner wall of the rail R and has a central portion fixed with screws, and one end portion of the base piece 61 is A locking piece 62 bent in a U-shape in the length direction and locked to the locking portion 521 of the movable locking portion 52 of the slider 5, and one end portion of the base piece 61 are L-shaped from both sides in the width direction. It consists of a pair of recovery pieces 63 bent relative to each other. The recovery piece 63 is set such that the opposing interval is larger than the width b of the first inclined portion 522 of the movable locking portion 52 of the slider 5 and smaller than the width c of the second inclined portion 523.

  According to the first example, since it is a finished product so as to be inserted and installed in the rail R as it is, installation work at the construction site becomes easy. Moreover, since the traveling member 2 and the traveling guide member 3 can be attached to and detached from the casing 1 and the end member 14 thereof, the traveling member 2 and the traveling guide member 3 are installed at the construction site corresponding to the sliding door D and the rail R as necessary. It can also be exchanged.

  Furthermore, as shown in FIG. 2, the spring 41 of the drive mechanism 4 is arranged outside the casing 1, so that the spring 41 or the spring mounting bracket 42 can be added and replaced as necessary at the construction site. The assist force of the drive mechanism 4 can be adjusted. That is, by replacing the spring 41 of the drive mechanism 4, the assist force of the drive mechanism 4 can be easily accumulated and adjusted.

  Further, the drive mechanism 4 supported by the casing 1 is a separate component without the spring 41 and the fluid pressure damper 43 being integrated. This eliminates the need for accuracy and structure for integrating the spring 41 and the fluid pressure damper 43 of the drive mechanism 4, thereby simplifying the structure of the drive mechanism 4 and reducing the manufacturing cost of the drive mechanism 4. Further, due to the simplification of the structure of the drive mechanism 4, there are few failures during the use of the drive mechanism 4, and it is possible to obtain certainty in the operation during use. Further, since the spring 41 of the drive mechanism 4 is disposed at the upper part inside the installed rail R and is in a position where dust or the like is difficult to adhere, the spring 41 bites the dust or the like even though it is exposed from the casing 1. It does not cause malfunction due to. The space between the weirs 123 on the bottom surface of the lower frame member 12 of the casing 1 also functions as an oil reservoir that leaks from the fluid pressure damper 43 that is the oil damper of the drive mechanism 4.

  As shown in FIG. 6A, the first example is installed inside the rail R, and the locking portion 521 of the movable locking portion 52 of the slider 5 is locked to the locking piece 62 of the receiving member 6. It is set in the state.

  In the state shown in FIG. 6A, the spring 41 of the drive mechanism 4 contracts, the rod 432 of the fluid pressure damper 43 moves backward to the cylinder 431, and the slider 5 stands up (movable) from the slider body 51. The lower surface of the second inclined portion 523 of the locking portion 52 is brought into contact with the sliding surface 116 of the upper frame member 11 of the casing 1, and the end portion (locking) of the sliding groove 114 of the upper frame member 11 of the casing 1. It is located (original position) on the opposite side of the groove 115.

  When the opening operation is performed for the sliding door D, as shown in FIG. 6B, the locking portion 521 of the movable locking portion 52 of the slider 5 is locked to the locking piece 62 of the receiving member 6. The slider 5 moves in the direction of the locking groove 115 of the upper frame member 11 of the casing 1 in accordance with the sliding operation of B. That is, the spring 41 of the drive mechanism 4 extends, and the rod 432 of the fluid pressure damper 43 advances from the cylinder 431, and the assist force is accumulated in the drive mechanism 4.

  When the slider 5 reaches the locking groove 115 of the upper frame member 11 of the casing 1, as shown in FIG. 7A, the lower surface of the second inclined portion 523 of the movable locking portion 52 of the slider 5 is in contact. Since the sliding surface 116 of the upper frame member 11 of the casing 1 disappears, the movable locking portion 52 of the slider 5 starts rotating around the support shaft 53 by the tensile force of the spring 41 of the drive mechanism 4.

  The rotation of the movable locking portion 52 of the slider 5 is guided by the taper guide portion 115b of the locking groove 115 of the upper frame member 11 of the casing 1, as shown in FIG. That is, the movable locking portion 52 of the slider 5 moves obliquely downward so that the lower surface of the second inclined portion 523 slides on the taper guide portion 115 b of the locking groove 115 of the upper frame member 11 of the casing 1. Accordingly, the movable locking portion 52 of the slider 5 is smoothly and reliably rotated without being caught by the locking groove 115 of the upper frame member 11 of the casing 1.

  Then, as shown in FIG. 7C, when the rotation of the movable locking portion 52 of the slider 5 proceeds, the locking portion 521 of the movable locking portion 52 of the slider 5 moves from the locking piece 62 of the receiving member 6. break away. At this time, the lower surface of the second inclined portion 523 of the movable locking portion 52 of the slider 5 is in contact with the locking portion 115 c of the locking groove 115 of the upper frame member 11 of the casing 1. That is, the movable locking portion 52 of the slider 5 is locked to the locking portion 115 c of the locking groove 115 of the upper frame member 11 of the casing 1 by the tensile force of the spring 41 of the drive mechanism 4. It is to be noted that the locking portion 115c which is a bent piece shape of the locking groove 115 of the upper frame member 11 of the casing 1 is locked by the protruding piece 132 of the end member 13 of the casing 1 so that the return deformation is prevented. The second inclined portion 523 of the movable locking portion 52 of the slider 5 is securely held at a certain position.

  As a result, the movable locking portion 52 of the slider 5 is displaced so as to drop into the locking space 115 a of the locking groove 115 of the upper frame member 11 of the casing 1, and the assist accumulated in the drive mechanism 3. It is maintained in a state that retains force.

  Subsequently, when the opening operation for the sliding door D is continued, as shown in FIG. 8, the first inclined portion 522 of the movable locking portion 52 of the slider 5 moves from the aforementioned width b to the recovery piece 63 of the receiving member 6. Pass between. In addition, since the 2nd inclination part 523 of the movable latching | locking part 52 of the slider 5 is rotating and displacing, it will pass under the recovery piece 63 of the receiving member 6. FIG. Thereafter, the sliding door D reaches a complete open state.

  When the closing operation is performed on the sliding door D, basically, the reverse operation of the operation of each part associated with the opening operation described above is performed. In particular, the rotation of the movable locking portion 52 of the slider 5 in the reverse direction is guided by the taper guide portion 115b of the locking groove 115 of the upper frame member 11 of the casing 1, and the lower surface of the second inclined portion 523 is the casing. The upper frame member 11 moves obliquely upward so as to slide on the taper guide portion 115b of the locking groove 115 of the upper frame member 11. For this reason, the movable locking portion 52 of the slider 5 is smoothly and reliably rotated in the reverse direction without being caught by the locking groove 115 of the upper frame member 11 of the casing 1.

  Then, when the locking portion 521 of the movable locking portion 52 of the slider 5 is locked to the locking piece 62 of the receiving member 6, the assist force accumulated in the drive mechanism 4 is suppressed by the fluid pressure damper 43. As the tensile force of the spring 41, it is exhibited as an appropriate auxiliary force so as to suppress the rapid sliding motion of the sliding door D and to maintain the sliding motion until the sliding door G is completely opened and closed. At this time, the movable locking portion 52 of the slider 5 stands up and moves toward the original position.

  In the site construction for configuring the set state shown in FIG. 6 (A), as shown in FIG. 9 (A), a door frame is used to prevent unnecessary stress from being applied to the slider 5 and the receiving member 6. Because of the relationship with the housing, etc., the slider 5 and the receiving member 6 are separated and inserted into the rail R before the sliding door D is attached. And after arrange | positioning and fixing the rail R, the sliding door D is attached and the sliding door D is moved to a closing direction. With this movement, as shown in FIG. 10, the second inclined portion 523 of the movable locking portion 52 of the slider 5 comes into contact with the recovery piece 63 of the receiving member 6 from the aforementioned width b. At this time, since the slider 5 positioned at the center (original position) in the longitudinal direction of the casing 1 is pushed by the recovery piece 63 of the receiving member 6, the casing 1 has an elongated cylindrical shape and is slightly elastic. Is elastically deformed so as to bend downward. As a result, the second inclined portion 523 of the movable locking portion 52 of the slider 5 can pass under the recovery piece 63 of the receiving member 6 (see FIG. 9B).

  When the sliding door D is moved in the opening direction after this passage, as shown in FIG. 11, the recovery piece 63 of the receiving member 6 functions in the same manner as when the assisting force of the locking piece 62 is accumulated, The slider 5 is rotated by the locking groove 115 of the upper frame member 11 of the casing 1. Therefore, when the sliding door D is subsequently moved in the closing direction, the locking piece 62 of the receiving member 6 and the locking portion 521 of the movable locking portion 52 of the slider 5 are locked.

  When the sliding door D is in the open state, the movable locking portion 52 of the slider 5 rotates unexpectedly in the reverse direction due to vibration or the like from the locking state in the locking groove 115 of the upper frame member 11 of the casing 1. 9 to 11, the locking piece 62 of the receiving member 6 and the locking portion 521 of the movable locking portion 52 of the slider 5 are locked by the operation shown in FIGS. The restored state is restored.

  Furthermore, in the first example, since the casing 1 is polygonal and has rigidity, the casing 1 is not distorted even if used for a long period of time, and the operation of the slider 5 is not hindered. Note that the upper frame member 11 and the lower frame member 12 into which the casing 1 is fitted are joined to each other by asymmetrical polygonal and wide-area joining surfaces 111 and 121. It is useful to endure and increase the rigidity of the casing 1. In addition, the fact that the upper frame member 11 and the lower frame member 12 into which the casing 1 is fitted is engaged with the engagement protrusion 112 and the engagement groove 122 to increase the fitting strength also increases the rigidity of the casing 1. It is useful for that. In addition, retaining the polygons of the upper frame member 11 and the lower frame member 12 in which the end members 13 and 14 are attached and fitted to the both ends of the casing 1 also helps to increase the rigidity of the casing 1. Yes. Further, the support piece 113 provided on the upper frame member 11 of the casing 1 and the dam portion 123 provided on the lower frame member 12 of the casing 1 also form an uneven structure on the casing 1 to increase the rigidity of the casing 1. Helpful.

  12 and 13 show a second example of the best mode for carrying out the sliding assist device for sliding doors according to the present invention.

  In the second example, a single spring 41 of the drive mechanism 4 is disposed below the bottom surface of the lower frame member 12 of the casing 1.

  The spring 41 of the drive mechanism 4 protrudes as a small block body from a mounting piece 124 in which a part of the bottom surface of the lower frame member 12 of the casing 1 is cut and raised outward in an L-shape and the bottom surface of the slider body 51 of the slider 5. It is spanned between the mounting block 513 and is arranged so as to be exposed from the open portion of the rail R. The attachment piece 124 of the lower frame member 12 of the casing 1 is provided with an insertion groove 125 opened downward. The mounting block 513 of the slider main body 51 of the slider 5 is provided with an insertion groove 514 opened downward. A reduced diameter portion formed near both ends of the spring 41 of the drive mechanism 4 is inserted into and removed from the insertion groove 125 of the lower frame member 12 of the casing 1 and the insertion groove 514 of the slider body 51 of the slider 5 from below. be able to.

  Note that a slide groove 126 for allowing movement of the mounting block 513 of the slider body 51 of the slider 5 corresponds to the slide groove 114 of the upper frame member 11 on the bottom surface of the lower frame member 12 of the casing 1. Is provided.

  According to the second example, as shown in FIG. 13, the spring 41 of the drive mechanism 4 exposed from the rail R can be easily replaced from below while being installed on the rail R. Therefore, the assist force after installation can be easily adjusted. Further, since the spring 41 of the drive mechanism 4 is exposed from the open portion of the rail R and no dust or the like is accumulated around it, the spring 41 of the drive mechanism 4 does not cause a malfunction due to the biting of dust or the like.

  Since the sliding groove 126 is provided on the bottom surface of the lower frame member 12 of the casing 1, the dam portion 123 serving as an oil reservoir cannot be provided as in the first example. It is possible to provide the weir portion 123 at a narrow interval in a portion where the slide groove 126 on the bottom surface is not provided.

  As described above, in addition to the illustrated examples, a structure that assists the opening of the sliding door D or a structure in which the assist force is accumulated and exhibited in the entire sliding operation of the sliding door D can be used.

  Furthermore, it is also possible to make the casing 1 into another polygon.

It is a perspective view of the 1st example of the best form for carrying out the sliding assist device of the sliding door concerning the present invention. FIG. 2 is an exploded view of a part of FIG. 1. FIG. 2 is an enlarged sectional view taken along line XX in FIG. 1. It is the enlarged view which cut | disconnected and decomposed | disassembled a part of principal part of FIG. It is the enlarged view which cut | disconnected a part of other principal part of FIG. It is a longitudinal cross-sectional view which shows the operation | movement of FIG. 1, (A) shows the closed state of a sliding door, (B) shows the open middle state of a sliding door. FIG. 7 is an enlarged view of the main part of FIG. 6, (A) shows the state of operation of FIG. 6 (B), (B) shows the state of operation following FIG. 6 (B), and (C). Further, the state of the operation following (B) is shown. FIG. 8 is a state diagram of the operation following FIG. It is a side view which shows operation | movement of the principal part in the case of the set of FIG. 1, and the operation | movement order is shown by (A) and (B). FIG. 10 is an enlarged view of a main part in an intermediate state from FIG. 9 (A) to FIG. 9 (B). It is a side view which shows operation | movement of the principal part in the case of the set of FIG. 1 following FIG. 9 (B). It is a perspective view of the 2nd example of the best form for implementing the sliding assist device of the sliding door concerning the present invention. It is the YY line expanded sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 11 Upper frame member 12 Lower frame member 2 Traveling member 4 Drive mechanism 41 Spring 43 Fluid pressure damper D Sliding door R Rail

Claims (9)

  A driving mechanism that accumulates assisting force during sliding operation in one direction and exerts assisting force during sliding operation in the other direction, and a rail that supports the driving mechanism and guides the traveling of the sliding member A sliding assist device for a sliding door comprising a spring that accumulates and exhibits assist force, and a fluid pressure damper that suppresses the exertion of the assist force of the spring. A sliding assist device for a sliding door, wherein the fluid pressure damper is a separate component, the spring is disposed outside the casing, and the fluid pressure damper is disposed inside the casing.   2. The sliding door slide assist device according to claim 1, wherein the spring of the drive mechanism is supported by the upper portion of the casing and is disposed on the upper side of the inside of the rail.   3. The sliding door sliding assist device according to claim 2, wherein a pair of springs of the driving mechanism are supported facing the side of the upper portion of the casing.   2. The sliding door sliding assist device according to claim 1, wherein the spring of the driving mechanism is supported by a lower portion of the casing and is exposed from an opening portion at a lower portion of the rail.   5. The sliding door sliding assist device according to claim 4, wherein the spring of the drive mechanism is detachable from the casing from the lower side of the rail.   6. The sliding assist device for a sliding door according to claim 1, wherein the casing is formed into an elongated cylindrical shape by fitting an upper frame member and a lower frame member having a polygonal cross-sectional shape. Sliding door slide assist device.   The sliding assist device for a sliding door according to claim 6, wherein the casing is provided with a joining surface that is joined to a side surface of the upper frame member and the lower frame member by a large area by fitting and engages the joining surface with each other, A sliding assist device for a sliding door, wherein an engagement groove is provided.   8. The sliding door slide assist device according to claim 6 or 7, wherein a part of the upper surface of the upper frame member is notched and bent toward the inside, and a support piece for supporting a part of the drive mechanism is provided. A sliding door slide assist device.   9. The sliding door sliding assist device according to claim 6, wherein the casing is provided with dam portions slightly raised on the bottom surfaces in the vicinity of both end portions of the lower frame member, respectively. Assist device.

Images