JP2012162901A - Device for assisting opening and closing of door or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mainspring/gear mechanism of a device for assisting by the mainspring/gear mechanism when opening and closing a slide type door or the like at a lower cost, and to improve durability of a mainspring.SOLUTION: A device for assisting opening and closing of a door or the like includes a first rack 7a to be engaged with a mainspring wind-up gear 11 of a first mainspring/gear mechanism 4 in the initial stage of opening a door or the like and a second rack 7b to be engaged with the mainspring wind-up gear 11 of a second mainspring/gear mechanism 4 in the initial stage of closing a door or the like, winds up the mainspring of the mainspring/gear mechanism 4 by utilizing the mainspring wind-up racks 7a and 7b, and transmits the release force of the mainspring to a traveling rack 6. In the device for assisting opening and closing of a door or the like, by disposing the first and second racks 7a and 7b in a prescribed length near both end sides in the traveling direction of the traveling rack 6 and on both left and right sides in the traveling direction holding the traveling rack 6 therebetween, the first and second mainspring/gear mechanisms 4 are turned to the ones of the same structure, turned back and attached to a door or the like.

Description

  The present invention relates to an improvement in an assist device that assists in opening and closing a sliding door or window (hereinafter referred to as a door).

  Conventionally, when opening and closing a sliding door or the like, the present inventor winds a spring by using a spring and a gear mechanism winding spring attached to the door or the like at an initial stage of opening and closing, and then springs Has proposed a door opening and closing assist device that assists in opening and closing operations of the door and the like (see, for example, Patent Document 1), and in this device, a mainspring winding gear meshed with a mainspring winding gear is proposed. Attach the rack and the traveling rack that meshes with the traveling gear to which the spring spring release force is transmitted, to the door frame etc., and the spring / gear mechanism for opening the door and the spring / gear mechanism for closing the door The winding direction of the mainspring is reversed and the rotational direction is also symmetric. (Paragraph [0018] of the same specification)

Japanese Patent No. 3960434

However, as in the above technique, the method of separately configuring the spring / gear mechanism for opening and closing the door, etc. is costly to manufacture, and at the same time attaches to the door, etc. It was necessary to be careful not to make a mistake.
In addition, in the case of the above technique, when a person who opens and closes a door, etc., operates the opening / closing operation in the reverse direction (for example, when he tried to open the door, but changed his mind and closed it) At the same time, it was also found that the wound mainspring turned over at a tremendous rate, causing problems with the durability of the mainspring.

  Accordingly, an object of the present invention is to make it possible to construct the mainspring / gear mechanism at a lower cost and to improve the durability of the mainspring.

  In order to achieve the above object, the present invention includes a pair of mainspring / gear mechanisms that incorporate a mainspring and are attached to a door, etc., and a mainspring winding gear of the mainspring / gear mechanism that is attached to a door frame in the vicinity of the door and the like. A spring winding rack and a traveling rack meshing with each of the traveling gears are provided, and the mainspring is wound up by rotation of the mainspring hoisting gear of the mainspring and gear mechanism, and the release force of the mainspring is passed through the traveling gear. In the door opening / closing assist device that assists the opening and closing of the door, etc. by transmitting to the traveling rack, the first spring / gear mechanism of the first spring / gear mechanism at the initial stage of opening the door, etc. A first rack that meshes with the mainspring hoisting gear, and a second mainspring / gear machine at an early stage of closing the door and the like A second rack that meshes with the mainspring hoisting gear is provided, and the first and second racks are disposed in the vicinity of both ends along the traveling direction of the traveling rack and on both the left and right sides with the traveling rack sandwiched in the width direction. It was arranged with a predetermined length.

  As the mainspring hoisting rack, the first rack that meshes with the mainspring hoisting gear of the first mainspring / gear mechanism at the initial stage of opening the door and the like, and the second mainspring / gear at the initial stage of closing the door etc. A second rack that meshes with the mainspring winding gear of the mechanism is provided, and the first and second racks are located near both ends along the traveling direction of the traveling rack and on both the left and right sides in the traveling direction across the traveling rack. The first and second springs and the gear mechanism can be turned upside down with the same structure and attached to the door, etc., thereby reducing the manufacturing cost and attaching to the door. At this time, it is only necessary to turn the mainspring / gear mechanism upside down.

At this time, in the present invention, the mounting portion of the mainspring / gear mechanism to the door or the like is provided at the corner of the case, and the mounting portion on the front side of the case and the mounting portion on the back side of the case are mutually different diagonal lines. A pair was provided on each.
By adopting such a configuration, when installing the mainspring and gear mechanism to a door, etc., whether it is installed upside down or installed without turning it over, it prevents the problem that the mounting part on the opposite side interferes with the tool. At the same time, the mainspring and gear mechanism can be securely attached to the door or the like.

Further, according to the present invention, the spring / gear mechanism is configured such that the inner end portion of the mainspring is disengaged from the engaging portion of the mainspring hoisting shaft when the mainspring is not loaded with a predetermined value or more when the mainspring is released. In addition, at least three or more engaging portions of the mainspring winding shaft are provided in the circumferential direction.
When the mainspring is not subjected to a load greater than the predetermined value when the mainspring is released, the inner end of the mainspring is disengaged from the engaging portion of the mainspring hoisting shaft so that the mainspring rotates freely. The inner end of the mainspring can be disengaged from the engaging portion even if it is moved in the reverse direction, and the inner end of the mainspring is adjacent by providing a plurality of engaging portions along the circumferential direction. It will shift to the engaging portion step by step, and it will be possible to gradually absorb the momentum. At this time, the more the number of engaging portions of the mainspring hoisting shaft is increased, the closer the inner end of the mainspring becomes adjacent The impact at the time of shifting to the engaging portion can be reduced, and the load on the mainspring can be reduced. For this reason, there are at least three engaging portions.

As the mainspring hoisting rack, the first rack that meshes with the mainspring hoisting gear of the first mainspring / gear mechanism at the initial stage of opening the door and the like, and the second mainspring / gear at the initial stage of closing the door etc. By disposing the second rack meshing with the mainspring winding gear of the mechanism in the vicinity of both ends along the traveling direction of the traveling rack and with a predetermined length on both right and left sides of the traveling rack in the width direction, The first spring / gear mechanism for opening the door and the like and the second spring / gear mechanism for closing the door, etc. can be made common, and the manufacturing cost is reduced. At this time, if the spring / gear mechanism mounting part is provided at the corner of the case and the front side mounting part and the back side mounting part are provided on different diagonal lines, the door and the like can be firmly attached. It can be attached and the attachment work becomes easy.
Further, when the mainspring is not subjected to a load of a predetermined value or more when the mainspring is released, the inner end of the mainspring is disengaged from the engaging portion of the mainspring hoisting shaft so that the mainspring hoisting shaft has at least three engaging portions. By doing so, there is no problem that the durability of the mainspring deteriorates even if the door or the like is moved in the reverse direction during the opening and closing operation of the door or the like.

It is a front view of the state which attached a pair of mainspring and gear mechanism of door opening and closing devices concerning the present invention to a door. It is a top view of FIG. It is a perspective view of the mainspring and gear mechanism of one side. It is explanatory drawing of the attachment state of a 1st, 2nd spring and gear mechanism, (a) is a 1st mainspring and gear mechanism, (b) is a 2nd mainspring and gear mechanism. It is explanatory drawing which shows an example of rack arrangement | positioning. It is an effect | action figure which shows the meshing state at the time of opening and closing of the door etc. of the mainspring and gear mechanism of one side. It is explanatory drawing which shows an example of the engaging part formed in a mainspring winding axis | shaft.

  The door opening / closing assist device according to the present invention can reduce the manufacturing cost by sharing the spring / gear mechanism when the door is opened and the spring / gear mechanism when the door is closed. Even if a person who opens and closes a door or the like operates the opening and closing operation in the middle, the apparatus can be configured as a device that can prevent a malfunction that deteriorates the durability of the mainspring.

  That is, the door opening / closing assist device 1 is attached to a pair of mainspring / gear mechanisms 4 attached to both upper ends of a door 2 as shown in FIGS. 1 to 4 and a door frame 3 as shown in FIG. Racks 6, 7 a, and 7 b, and a plurality of running rollers 5 that can run on the rail portion 3 r of the door frame 3 etc. are adjacent to each other inside the pair of first, second spring, and gear mechanism 4. The racks 6, 7 a, 7 b attached to the door frame 3 are sandwiched between the central traveling racks 6, near both side ends in the traveling direction, and sandwich the traveling racks 6 in the width direction. It consists of a total of three first and second racks 7a and 7b provided with a predetermined length on both the left and right sides.

  The first and second racks 7a and 7b are racks for meshing with the mainspring hoisting gears 11 of the first, second mainspring, and gear mechanism 4 and winding the mainspring. The mainspring is almost full. The traveling rack 6 is engaged with the traveling gear 12 of the mainspring / gear mechanism 4 to transmit the driving force when the wound mainspring is released. Therefore, it is provided in substantially the entire length of the intermediate portion along the traveling direction of the door 2 or the like.

Here, an outline of the structure of the mainspring / gear mechanism 4 will be described with reference to FIG.
The mainspring / gear mechanism 4 has the same configuration as the first / second mainspring / gear mechanism 4, and when the mainspring / gear mechanism 4 is attached to the door 2 or the like, the mainspring / gear mechanism 4 on one side is reversed and attached in the reverse direction. At this time, the traveling gears 12 of the first, second spring, and gear mechanism 4 are aligned along the traveling direction so that the traveling gears 12 can mesh with the traveling rack 6. Has been.

  Then, the springs 11 of the first and second springs / gear mechanisms 4 can be engaged with the first rack 7a and the second rack 7b, respectively, and are closed when the door 2 is released. Since the same operation is performed over time, the first spring / gear mechanism 4 when the door 2 or the like 2 is opened will be described below as a representative example.

When the door or the like 2 is opened, when a person operating the door or the like pushes and opens the door or the like 2 by hand as shown in FIG. 6 (a) in the first stage, it meshes with the first rack 7a for winding the mainspring. The mainspring winding gear 11 rotates, and the mainspring gear 14 is rotated via the first idler gear 13 to wind up the mainspring incorporated in the mainspring gear 14. Incidentally, in the mainspring, for example, an inner portion (spiral type central portion) of the mainspring is engaged with a mainspring winding shaft 18 at the center of a mainspring gear 14 which will be described later, and an outer portion (outside of the spiral type) is a spring / gear mechanism. 4 is engaged. The mainspring is wound up until the mainspring hoisting gear 11 is detached from the first rack 7a. Here, the first idler gear 13 is always meshed with the mainspring hoisting gear 11, and when the mainspring hoisting gear 11 rotates in the forward rotation direction, the first idle gear 13 is lowered by a predetermined stroke and meshed with the mainspring gear 14. When the mainspring hoisting gear 11 rotates in the reverse rotation direction, the mainspring hoisting gear 11 is raised by a predetermined stroke so as to be disengaged from the mainspring gear 14.
Further, the second idler gear 15 is engaged with the downstream side of the mainspring gear 14 via the idle gear 15, and the traveling gear 12 can be engaged with the second idler gear 16. At this stage, the second idle gear 16 falls downward depending on the rotation direction of the idle gear 15, and the second idle gear 16 and the traveling gear 12 are not engaged with each other.

When the mainspring hoisting gear 11 and the first rack 7a are disengaged and the traveling gear 12 and the traveling rack 6 are engaged, the mainspring starts rotating in the reverse direction by the release force as shown in FIG. 6B. Then, the second idle gear 16 is lifted upward by the rotation of the idle gear 15, and the second idle gear 16 and the traveling gear 12 are engaged.
That is, the second idle gear 16 is always meshed with the idle gear 15 and when the idle gear 15 rotates in the forward direction, the second idle gear 16 is raised by a predetermined stroke and meshed with the traveling gear 12 so that the idle gear 15 is in the reverse direction. When it rotates, it is lowered by a predetermined stroke to disengage from the traveling gear 12.
For this reason, a person who opens the door or the like can open the door or the like 2 without using much force with the help of the spring releasing force. That is, opening of the door 2 or the like is assisted.

Next, when the opened door 2 or the like is closed, the traveling gear 12 of the first spring / gear mechanism 4 rotates in the opposite direction to that of the opening as shown in FIG. 6 (c). Since the release of has been completed, the second idle gear 16 has dropped downward, and only the traveling gear 12 rotates. When the mainspring hoisting gear 11 is engaged with the first rack 7a just before the door 2 is closed, as shown in FIG. 6 (d), the mainspring hoisting gear 11 rotates in the opposite direction to the hoisting. The first idle gear 13 is pulled upward to disengage the first idle gear 13 and the mainspring gear 14.
Accordingly, the first spring / gear mechanism 4 for opening the door or the like does not become a resistance when moving the door 2 or the like in the closing direction.

  Of course, it goes without saying that when the door or the like is closed, another second spring / gear mechanism 4 assists the closing operation of the door or the like.

  In the mainspring / gear mechanism 4 described above, the first and second racks 7a and 7b as the mainspring hoisting racks are disposed near both ends of the traveling rack 6 and on both the left and right sides of the traveling rack 6. By simply attaching the spring / gear mechanism 4 having the same structure in the reverse direction, it becomes possible to cope with both the release time and the close time, and no manufacturing cost is required.

  By the way, in the case of the mainspring / gear mechanism 4 as described above, when the person who operates the door 2 or the like changes his mind during the operation and moves in the opposite direction, the mainspring that has been wound up so far has a tremendous momentum. There is a problem that it is reversed and a load is applied to the mainspring.

  That is, for example, if a person who is operating to open the door 2 or the like tries to close it halfway, for example, the state shown in FIG. 6A directly changes to the state shown in FIG. Since the meshing between the traveling gear 12 and the mainspring gear 14 and the mainspring hoisting gear 11 is disengaged, only the mainspring starts to reverse, and the mainspring is not loaded. .

Therefore, in the present invention, as shown in FIG. 7, the inner end portion 17a of the mainspring 17 can be freely engaged with and disengaged from a plurality of engaging portions 18k (18k1, 18k2, 18k3) provided on the mainspring hoisting shaft 18, thereby winding the mainspring. When the spring 17 is not connected directly to the shaft 18 and the load applied to the mainspring 17 is small despite the strong repulsive force of the mainspring 17, the next engaging portion 18k2 is stepped off from the current engaging portion 18k1 step by step. , 18k3, and the repulsive force is gradually absorbed.
At this time, if there are about two engaging portions with respect to the circumferential direction, the impact when the inner end portion 17a moves is large. Therefore, in the present invention, at least three engaging portions 18k (18k1, 18k2) are used. 18k3).

  The outer end portion 17b of the mainspring 17 is not directly fixed to the inner side of the case of the mainspring / gear mechanism 4 or the like, and a plurality of engaging portions 18s (18s1, 18s2, 18s3, This is for preventing the mainspring 17 from being excessively wound. When the mainspring 17 is excessively wound, the outer end portion 17b is adjacent to the engaging portion in a stepwise manner. By moving to 18 s (18 s 1, 18 s 2, 18 s 3,...), Overspring winding is prevented.

  With the above-described configuration, in a system that obtains the assistance of the spring with the reciprocating motion when opening and closing the sliding door 2 etc., it can be configured at a lower cost, and the spring / gear mechanism can be easily attached, In addition, the durability of the mainspring can be increased.

  By the way, when attaching the mainspring / gear mechanism 4 to the door 2 or the like 2, in this embodiment, as shown in FIG. On the lower right diagonal line and on the back surface side, mounting portions 4t are provided so as to protrude from the upper right and lower left on the diagonal line different from the front surface side, and can be fastened with screws or the like. And by fixing the diagonal part in this way, the whole can be fixed firmly and securely, and the attachment part 4t on the opposite side does not obstruct the tool when fastened with screws or the like, and the work is easy. is there.

In addition, this invention is not limited to the above embodiments. What has substantially the same configuration as the matters described in the claims of the present invention and exhibits the same operational effects belongs to the technical scope of the present invention.
For example, the arrangement of the mainspring / gear mechanism 4 and the traveling roller 5 attached to a door or the like is an example, and in this embodiment, three engaging portions 18k are formed on the mainspring winding shaft 18, It may be more than that.

  A device that assists opening and closing of a door can be constructed at a lower cost, and the durability of the mainspring can be enhanced. For example, widespread use is expected in train doors, building doors, and the like.

DESCRIPTION OF SYMBOLS 1 ... Door etc. opening / closing assist device, 2 ... Door etc., 4 ... Spring / gear mechanism, 4t ... Attachment part, 6 ... Traveling rack, 7a ... 1st rack, 7b ... 2nd rack, 11 ... Spring winding gear, 12 ... Traveling gear, 18 ... Spring winding shaft, 18k1, 18k2, 18k3 ... Engagement part.

Claims (4)

A pair of mainspring / gear mechanism with a built-in mainspring and attached to a door, etc., and a mainspring hoisting that is attached to a door frame in the vicinity of the door etc. and meshes with the mainspring hoisting gear and the traveling gear of the mainspring / gear mechanism. And a traveling rack. The mainspring is wound up by rotating the mainspring winding gear of the mainspring / gear mechanism, and the release force of the mainspring is transmitted to the traveling rack via the traveling gear to A door opening / closing assist device for assisting opening and closing, wherein the mainspring hoisting rack meshes with the mainspring hoisting gear of the first mainspring / gear mechanism at an initial stage of opening the door etc. One rack meshes with the mainspring winding gear of the second mainspring / gear mechanism at the initial stage of closing the door or the like. The first and second racks are provided with a predetermined length on both the left and right sides of the traveling rack in the vicinity of both ends along the traveling direction and with the traveling rack sandwiched in the width direction. A door opening / closing assist device. 2. The door opening / closing assist device according to claim 1, wherein the pair of mainspring / gear mechanisms having the same structure are reversed and attached to a door or the like. Attachment portions of the mainspring / gear mechanism to the door and the like are provided at corner portions of the case, and a pair of attachment portions on the front side of the case and attachment portions on the back side of the case are provided on different diagonal lines. The door opening / closing assist device according to claim 1, wherein the door opening / closing assist device is provided. The mainspring / gear mechanism is configured such that when the mainspring is not subjected to a load exceeding a predetermined value when the mainspring is released, the inner end portion of the mainspring is disengaged from the engaging portion of the mainspring winding shaft, and the mainspring winding shaft 4. The door opening / closing assist device according to claim 1, wherein at least three or more engaging portions are provided in the circumferential direction. 5.

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