JP2009167647A - Door stop - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door stop which eases a shock when a door is opened, automatically latches and holds the door in an open state, and makes the door closable only by operating the door. <P>SOLUTION: A door stop body 5 provided for the door 1 has an engaging shaft 12 mounted thereon, which has a lower edge 13 thereof protruded downward. The engaging shaft 12 is repeatedly shifted to a lifted position and a protruded position in which the lower edge 13 is present above the lifted position whenever the lower edge 13 is pressed upward. Then a receiving portion 8 arranged on a floor has an operating surface 33 formed therein, which is inclined so as to press the lower edge 13 upward when the door is moved in an opening direction. The receiving portion further has an engagement termination portion 34 formed thereon adjacently to the operating surface 33, which does not engage with the lower edge 13 in the lifted position but engages with the same in the protruded position. Further the stopper body 5 is provided with a cushioning member 27 and a stopper 31, and the receiving portion 8 is provided with a cushioning wall 35 and a stopper wall 36. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a door stop that prevents a door, a handle, a handle, etc. from being damaged when the door is opened carelessly, or when the door is suddenly opened by a wind and the door or a handle collides with a wall. Is.

In the market, various types of doors are provided, but in recent years, more convenient ones than the conventional doors are desired. If the door is opened inadvertently or suddenly opened by the wind, the wall, door, handle, etc. will not be damaged so that the door will hit the door before absorbing the shock, It is usually provided on the floor or wall so that the latch can be locked to the door in the open position and maintained in that position. However, in the conventional one, the member attached to the floor or wall protrudes from the floor etc., so there is a risk of stumbling or bumping, and it may interfere with cleaning, and the door latches may be hung or removed I had to bow down. In view of this, a device that can be locked or released only by opening and closing the door without being tripped or obstructed by cleaning is preferred, and such a device has also been proposed (for example, Patent Document 1). 2). However, as a conventionally proposed device, for example, the device described in Patent Document 1 has a structure in which a movable mechanism is incorporated in a receiving member provided on the floor, so that dust or the like is clogged in the movable part and malfunctions. There is a risk of causing. In addition, the device as described in Patent Document 2 is not provided with a movable mechanism in the receiving member, but when releasing the door lock, the case provided on the door side is pushed by hand or foot, or the knob is held by hand. Since it has to be operated in, it is troublesome.
JP 2004-131997 A (Claim 1, FIG. 1, FIG. 9 to FIG. 12) JP-A-2005-344315 (paragraphs 0007, 0011, 0013, 0016, FIG. 5, FIG. 10 to FIG. 12)

  The problem to be solved by the present invention is that the receiving part does not protrude greatly from the floor surface, the receiving part has no movable mechanism, and the door is held in the open position or the door is released only by opening and closing the door. It is to provide a door stop that can be done.

  According to the present invention, the door-holding body attached to the hinged door and the receiving part attached to the floor are provided, and the door-holding body has a locking shaft whose lower end protrudes below the door-locking body and the locking shaft. When the lower end of the lever is pushed upward, a feeding mechanism is provided to alternately displace the locking shaft to a protruding position where the lower end is located below the pulled position, and the receiving portion moves the door in the opening direction. The engaging surface is inclined so that the lower end of the locking shaft abuts and presses the locking shaft upward when engaged, and the lower end of the locking shaft in the pulled up position is not engaged, but the engagement is in the protruding position. A door stop is provided in which a lower end of the stop shaft is provided with a locking step portion protruding so as to be engaged, and the above-mentioned problem is solved.

  Further, according to the present invention, the door stop main body is provided with a buffer member biased by a buffer spring in the door opening direction, and the lower end of the locking shaft abuts the working surface on the receiving portion. A buffer wall is provided so that the buffer member abuts, and a stopper projecting downward is formed on the door stop body, and the lower end of the locking shaft is in contact with the working surface in the receiving portion. The door stop provided with a stopper wall against which the stopper abuts so as to regulate the movement range when the door is moved is provided, and the above-mentioned problems are solved.

  In the present invention, it is preferable that the feeding mechanism is an outer portion having a substantially cam-shaped front cam formed on the inner surface of the receiving hole of the door stop main body and having a clutch groove extending vertically between the front cams. A cam, and a pressing cam formed on the locking shaft inserted into the receiving hole and having a sliding protrusion on the outer periphery that engages the clutch groove so as to be movable up and down, and a substantially mountain-shaped front cam on the top The front cam having a substantially mountain shape that is inserted into the receiving hole and engageable with the front cam of the outer cam and the pressing cam is provided at the lower portion, and the outer peripheral protrusion that can be inserted into and removed from the clutch groove is provided on the outer periphery. When the outer peripheral protrusion of the clutch piece is disengaged from the clutch groove, the lower end thereof is in the pulled-up position and the outer peripheral protrusion of the clutch piece is fitted into the clutch groove. The lower end is the protruding position The doorstop is provided which is vertically movable suspended to the clutch pieces so as to lie in, the problems are solved.

  The present invention is configured as described above, and includes a door-holding body attached to the hinged door and a receiving part attached to the floor, and the door-holding body has a lower end protruding below the door-holding body. When the lower end of the locking shaft is pushed upward, a feeding mechanism is provided to alternately displace the locking shaft to a protruding position where the lower end is located below the lifting position, and the receiving portion is provided with a door. When moved in the opening direction, the lower end of the locking shaft abuts and the working surface that inclines so as to press the locking shaft upward is not engaged with the lower end of the locking shaft in the lifted position, but the protruding position When the door is opened, the lower end of the locking shaft is in the pulled-up position and the locking step of the receiving portion The door can be moved to the open position without hitting. When the lower end of the locking shaft hits the action surface, the locking shaft is pressed upward and moved from the retracted position to the protruding position by the action of the feeding mechanism. The door can be maintained in the open position by engaging the stepped portion. When the door is to be closed, if the door is moved again in the opening direction and the lower end of the locking shaft is brought into contact with the action surface, the locking shaft returns to the pulled-up position by the action of the feeding mechanism. Even if the door is moved in the closing direction, the lower end does not hit the locking step portion, so that the door can be closed without any trouble. As described above, the receiving portion has no movable mechanism and can be made thin as a whole, so that there is no possibility of clogging up the dust and failure or hitting a foot or a cleaning tool.

  In addition, a buffer member urged by a buffer spring in the door opening direction is provided on the door-contacting main body, and the buffer member is buffered so that the buffer member comes into contact with the receiving portion when the lower end of the locking shaft contacts the working surface. When the wall is provided, the impact when the lower end of the locking shaft comes into contact with the working surface is reduced as described above, and the door is urged in the closing direction by the extension of the buffer spring. Is easy. Further, a stopper projecting downward is formed on the door-stop main body, and the stopper is configured to restrict the movement range when the door is moved in the receiving portion in a direction in which the lower end of the locking shaft comes into contact with the action surface. If the stopper wall to contact is provided, there is no risk of malfunction such as the door or handle hitting the wall when the lower end of the locking shaft is brought into contact with the working surface as described above. If a mechanism including an outer cam, a pressing cam, and a rotatable clutch piece is used as the feeding mechanism, the operation is reliable and a stable operation can be expected.

  FIG. 1 and FIG. 2 show an example of a door opening and closing device. The opening door 1 is pivotally suspended in the side frame 2 by hinges 3 provided at the upper and lower parts of the suspension side frame 2, and the door end side is shown. There is a handle 4 in the middle of the door, and a door-holding body 5 is provided in the lower part. And the receiving part 8 is provided in the position corresponding to the downward direction of the said door stop main body 5 of the door of an open position on the floor 7 so that the door 1 and the handle 4 may not collide with the wall 6 of a building.

  The door stop main body 5 has attachment holes 9 for attachment to the door on both sides, a receiving hole 11 is formed in a cylindrical portion 10 formed substantially in the middle, and a locking shaft 12 is provided in the receiving hole 11. The lower end 13 of the locking shaft 12 is protruded below the door stop main body 5. Each time the lower end 13 of the locking shaft 12 is pushed upward, the lower end 13 of the locking shaft is lifted upward and below the lifting position. A feeding mechanism for alternately displacing to the projected position is provided. As described above, the lower end 13 of the locking shaft 12 protrudes downward from the door stop main body 5 even in the pulled-up position, but the protruding amount is smaller than the protruding amount in the protruding position. It protrudes downward long.

  As the feeding mechanism, various known mechanisms can be adopted. In the embodiment, a feeding mechanism applying a rotary cam type feeding mechanism of a knock type ballpoint pen is adopted. That is, as shown in FIGS. 7 to 10, the outer cam 14 is integrally formed on the inner surface of the receiving hole 11 of the door stop main body 5. The outer cam 14 has a substantially mountain-shaped front cam 15 having an inclined surface on one side at the top, and extends between the front cams 15 in the vertical direction at least at a distance between the retracted position and the protruding position as described later. A clutch groove 16 having a corresponding depth is provided. A pressing cam 17 is integrally formed at the upper end of the locking shaft 12. The pressing cam 17 has a sliding projection 18 on the outer periphery that engages with the clutch groove 16 so as to be movable up and down, and has a substantially chevron-shaped front cam 19 on the top. The clutch piece 20 rotatably inserted into the receiving hole 11 has a substantially mountain-shaped front cam 21 inclined to one side that can be engaged with the front cams 15 and 19 of the outer cam 14 and the pressing cam 17. The outer peripheral protrusion 22 is provided at the lower part and can be inserted into and removed from the clutch groove 16 and is urged downward by a spring 23. The spring 23 is fixed to the door-stop main body by a spring pin 24 at the upper part of the spring 23. A lid 25 is provided. Further, when the outer peripheral protrusion 22 of the clutch piece 20 is disengaged from the clutch groove 16, the locking shaft 12 has its lower end 13 in the pulled-up position, and the outer peripheral protrusion 22 of the clutch piece 20 is in the clutch groove. 16 is suspended by a shaft 26 that is loosely fitted to the clutch piece 20 so as to be movable up and down within a range in which the cam stroke length has a margin so that the lower end 13 is located at the protruding position.

  When the outer peripheral projection 22 of the clutch piece 20 is engaged with the front cam 15 of the outer cam 14 by the above configuration, the locking shaft 12 suspended from the clutch piece by the shaft 26 is in the pulled-up position, and the engagement The lower end 13 of the stop shaft 12 slightly protrudes from the lower side of the door stop main body 5, and the sliding protrusion 18 of the pressing cam 17 is positioned at the intermediate height of the clutch groove 16 (see FIG. 11). When the lower end 13 of the locking shaft 12 is pushed upward, the front cam 19 formed above the pressing cam 17 provided on the locking shaft is engaged with the front cam 21 of the clutch piece 20 and the clutch piece. Is pushed up, the clutch piece 20 is rotated by the inclination of the front cam (see FIG. 12), and the outer peripheral projection 22 moves to a position facing the clutch groove 16 of the outer cam 14. When the pressing of the locking shaft 12 is stopped, the clutch piece 20 is lowered by the spring 23 or by its own weight, and the outer peripheral protrusion 22 enters the clutch groove 16 and is engaged with the clutch groove 16. The pressing cam 17, that is, the locking shaft 12 is lowered to a position where the sliding projection 18 contacts the bottom of the clutch groove 16 (see FIG. 13). The lower end 13 protrudes downward more than the protruding amount of the pulling position and moves to the protruding position.

  When the lower end 13 of the locking shaft 12 is pressed upward again from this state, the clutch piece 20 is pushed up to the position where the outer peripheral protrusion 22 escapes from the clutch groove 16 by the sliding protrusion 18 of the pressing cam 17. Since the pressing cam 17 and the front cams 19 and 21 of the clutch piece 20 are engaged with each other, the clutch piece 20 rotates to a position where the outer peripheral protrusion 22 faces the front cam 15 of the outer cam 14. . When the pressing of the locking shaft 12 is stopped, the clutch piece 20 is urged by the spring 23, so that the front cam 21 is lowered and seated on the outer cam with the front cam 21 engaged with the front cam 15 of the outer cam 14. To do. At this time, since the locking shaft 12 is suspended from the clutch piece 20 by the shaft 26, the lower end 13 is pulled upward and moved to the lifted position. Thereafter, each time the lower end 13 of the locking shaft 12 is pressed, the locking shaft 12 is alternately displaced between the pulled-up position and the protruding position. Instead of the rotating cam type feeding mechanism, an appropriate device applying a known feeding mechanism or the like that appears and disappears alternately by a push operation may be used.

  Further, a buffer member 27 is provided on one side of the lower end of the cylindrical portion 10 of the door stop main body 5. Referring to FIG. 5, the buffer member 27 is slidably inserted into a storage hole 28 formed in the door stop body 5 with the lower portion protruding downward, and is urged by a buffer spring 29 in the door opening direction. A lid 30 is provided at the opening end of the storage hole 28. Further, a stopper 31 protruding downward is provided on the other side of the lower end of the cylindrical portion 10. When the buffer member 27 and the stopper 31 move the door 1 toward the open position, the relationship between the lower end 13 of the locking shaft 12 provided on the door stop main body 5 and the receiving portion 8 provided on the floor 7 is obtained. It works as described later.

  The receiving part 8 is formed in a substantially thin plate-like substantially disk shape having a mounting hole 32 so that it can be fixed to the floor 7 with a screw or the like, and when the door 1 is moved in the opening direction on its upper surface, An action surface 33 is provided so as to incline so that the lower end 13 of the locking shaft 12 contacts and presses the locking shaft 12 upward. Further, the lower end 13 of the locking shaft 12 in the pulled-up position following the bottom on the inclined end side of the working surface 33 is not engaged, but the lower end 13 of the locking shaft 12 in the protruding position is engaged so as to engage. A locking step portion 34 is provided so as to protrude from the top. Further, a buffer wall 35 against which the buffer member 27 abuts is provided on one side of the action surface 33 so as to reduce an impact when the lower end 13 of the locking shaft 12 abuts against the action surface 33, and on the other side. A stopper wall 36 is provided on which the stopper 31 abuts so as to restrict the movement range of the door 1 when the door 1 is moved in the opening direction while abutting the lower end 13 of the locking shaft 12 against the action surface 33.

  Hereinafter, the operation of the door stop will be described with reference to FIGS. 14 and 15, A is the relationship between the stopper 31 provided on the door stop body 5 and the stopper wall 36 of the receiving portion 8, B is the relationship between the buffer member 27 and the buffer wall 35, and C is the lower end 13 of the locking shaft 12. The relationship between the working surface 33 and the locking step 34 is shown. When the door is closed, the lower end 13 of the locking shaft 12 is in the pulled-up position, and when the door 1 is opened from that state, the door 5 is advanced to a position where the door-stop main body 5 faces the receiving portion 8. Then, as shown in A-1, B-1, and C-1, there is nothing that restricts the movement of the stopper 31, the buffer member 27, and the locking shaft 12 at the retracted position, and the door can be opened without any trouble.

  Next, as shown in B-2, when the buffer member 27 moves to a position corresponding to the buffer wall 35 of the receiving portion 8, the impact is reduced, and the locking shaft 12 of the locking shaft 12 is reduced as shown in C-2 and C-3. The lower end 13 starts to hit the working surface 33. At this time, the stopper 31 does not hit the stopper wall 36 as shown in A-2 and A-3. When the door 1 further moves in the opening direction, the lower end 13 of the locking shaft 12 is pushed upward by the action surface 33 as shown in A-4, B-4, and C-4, and the buffer spring 29 of the buffer member 27 is pressed. Is compressed, and the stopper 31 is restricted by the stopper wall 36 from moving the door 1. When the movement of the door in the opening direction is stopped, the buffer spring 29 that has been compressed is extended, so that the door is slightly returned in the closing direction (B-5), and the stopper 31 is separated from the stopper wall 36 (A-5). ). At this time, since the upward pressing force of the lower end 13 of the locking shaft 12 is released, the locking shaft 12 moves from the retracted position to a protruding position below it, and is engaged with the locking step 34 as shown in C-5. At the same time, the door 1 is held open.

  FIG. 15 is an explanatory diagram when the door 1 is closed. When the door is further pushed in the opening direction from the open state shown in A-5, B-5, and C-5 in FIG. 14, A-6 and B-6 are shown. , C-6, the lower end 13 of the locking shaft 12 hits the action surface 33 and is pressed upward, the buffer member 27 hits the buffer wall 35, the buffer spring 29 is compressed, and the stopper 31 is the stopper. The movement of the door is restricted by hitting the wall 36. When the movement of the door is stopped, the door is slightly returned in the closing direction by the compressed buffer spring 29 (B-7), and the stopper 31 is separated from the stopper wall 36 (A-7). At this time, since the upward pressing force of the lower end 13 of the locking shaft 12 is released, the locking shaft 12 moves from the protruding position to the retracted position above it, and is engaged with the locking step 34 as shown in C-7. It rises to a height that does not match. Therefore, after that, even if the door is moved in the closing direction as shown in A-8, B-8, C-8 and A-9, B-9, C-9, it will be caught by the locking step 34. The door can be moved in the closing direction. Since the states shown in A-9, B-9, and C-9 are the same as the states shown in A-1, B-1, and C-1, the doors are opened and closed in the same manner, and the automatic operation is performed in the open position. In addition, it is possible to perform buffering and latching of the door, and to move the door to the closed position by removing the latch only by operating the door.

Explanatory drawing which showed one Example of the door opening / closing apparatus, and looked at the door from the plane. The front view of a door. The perspective view of a door stop main body and a receiving part. Sectional drawing of a locking shaft part. Sectional drawing of a buffer member part. Rear view. Sectional drawing of the door stop main body except a locking shaft etc. FIG. Explanatory drawing of an outer cam part. The locking shaft is shown, A is a plan view, B is a front view, and C is a bottom view. A clutch piece is shown, A is a top view, B is a front view, C is a bottom view, D is sectional drawing. Explanatory drawing which shows the relationship of a cam, and when a latching shaft exists in a raising position. Explanatory drawing of a cam when a latching shaft is pushed up from a pulling-up position. Explanatory drawing of a cam when a locking shaft is extended to a protrusion position. Explanatory drawing when opening a door. Explanatory drawing when closing a door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 5 Door main body 8 Receiving part 12 Locking shaft 13 Lower end 14 of a locking shaft Outer cam 17 Press cam 20 Clutch piece 27 Buffer member 29 Buffer spring 31 Stopper 33 Action surface 34 Locking cut part 35 Buffer wall 36 Stopper wall

Claims (6)

  The door-holding body is provided with a door-attached main body attached to the hinged door and a floor-attached receiving portion. When the door is moved, the feeding shaft is alternately displaced to a protruding position where the lower end and the lower end are located below the pulling position. The working surface that inclines so that the lower end of the shaft abuts and presses the locking shaft upward is not engaged with the lower end of the locking shaft in the pulled-up position, but the lower end of the locking shaft in the protruding position is engaged. The door stop characterized by the fact that the latching step part which protrudes so that it may match is provided.   The door stop main body is provided with a buffer member urged by a buffer spring in the door opening direction, and the buffer member comes into contact with the receiving portion when the lower end of the locking shaft contacts the working surface. The door stop according to claim 1, wherein a buffer wall is provided.   A stopper projecting downward is formed on the door stop main body, and the stopper is configured to restrict a movement range of the receiving portion when the door is moved in a direction in which the lower end of the locking shaft comes into contact with the action surface. The door stop according to claim 1, further comprising a stopper wall against which the abuts.   The feeding mechanism includes an outer cam formed on the inner surface of the receiving hole of the door-to-door main body and having a substantially mountain-shaped front cam at the upper portion and a clutch groove extending vertically between the front cams, and inserted into the receiving hole. A pressing cam formed on the locking shaft and engaged with the clutch groove so as to be movable up and down on the outer periphery, and a substantially cam-shaped front cam on the upper portion; and inserted into the receiving hole and A rotatable clutch piece having a substantially chevron-shaped front cam that can be engaged with the front cam of the outer cam and the pressing cam at the bottom, and an outer peripheral projection that can be fitted into and removed from the clutch groove on the outer periphery; The shaft has a lower end located at the pulled-up position when the outer peripheral protrusion of the clutch piece is disengaged from the clutch groove, and a lower end located at the protruding position when the outer peripheral protrusion of the clutch piece is fitted into the clutch groove. Can move up and down on clutch piece Doorstop according to claim 1 which is suspended 3.   The door stop according to claim 4, wherein the clutch piece is biased downward by a spring.   A door opening and closing device using the door stop according to any one of claims 1 to 5.

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