JP4834820B2 - Automatic adjustment strike - Google Patents

Description

  The present invention relates to an automatic adjustment strike, and more particularly to an automatic adjustment strike that can expand the adjustment range.

  A type of electric lock that directly amplifies the dead bolt by amplifying the rotational force of the micromotor through a speed reducer and supplying it to a locking mechanism that controls the appearance of the dead bolt is well known.

  Such a so-called motor-driven electric lock has a large frictional resistance when the dead bolt is pulled out of the strike hole for unlocking because a side pressure is applied to the dead bolt inserted into the strike hole during locking. When it is small, there is an inconvenience that unlocking is impossible.

  Alternatively, if the rated output of the micromotor is set to a large value in consideration of the variation in the building of the door and the above frictional resistance, another inconvenience that wasteful power consumption occurs this time.

  Therefore, the present applicant has previously proposed a strike mechanism that can reduce the lateral pressure applied to the deadbolt during unlocking according to Patent Document 1 described later.

As shown in FIG. 9 of Patent Document 1, this strike is provided with needle rollers 8 and 8 with a dead bolt 1 sandwiched in the strike, and these are configured to be rotatable around a vertical axis. When the deadbolt moves in the unlocking direction, the needle roller is rolled on the side surface of the deadbolt to thereby reduce the side pressure.
Japanese Patent Publication No.54-31438

  The strike described in Patent Document 1 also has another function of automatically adjusting the displacement of the dead bolt in the horizontal direction with respect to the strike hole when a dead bolt is inserted into the strike hole.

  As is clear from FIG. 9 of Patent Document 1, if the extension of one side surface of the dead bolt 1 is outside the center line of the corresponding needle roller 8, that is, in the direction of the center line of the strike, it is viewed from the strike. The outer peripheral surface of the needle roller 8 is a kind of inclined surface, and the strike fixed to the door frame can forcibly correct the displacement of the movable dead bolt by the wedge action generated by the engagement between the inclined surface and the dead bolt. It is.

  However, since the outer diameter of the needle roller 8 is not usually large, there is still room for improvement, such as the amount of adjustment when the dead bolt is thrown into the strike hole cannot be increased.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to improve the conventional adjustment strike for a motor-driven electric lock and increase the position adjustment amount of the dead bolt when the dead bolt is turned on.

  In order to achieve the above object, the invention according to claim 1 is guided to move in the front-rear direction perpendicular to the strike plate, in a direction close to the strike plate, in a trolley of the strike attached to the door frame. A biased holder is provided, and a pair of inner rolling elements having a vertical rotation shaft are disposed in the holder, and the inner rolling elements are allowed to move in the horizontal direction between the inner rolling elements. A pair of chamfered portions formed at both corners of the horizontal projection of the tip of the dead bolt to be thrown into the strike hole, and having a vertical rotation shaft at both side edge portions of the strike hole. The outer rolling elements are arranged, and the distance between the pair of outer rolling elements is set larger than the distance between the inner rolling elements.

  Further, the invention according to claim 2 stores a box-shaped holder having an opening on one side in a troyoke of a strike attached to a door frame in a nested manner in a positional relationship in which the opening faces a strike plate. The holder is guided so as to be movable in the front-rear direction perpendicular to the strike plate, and is urged in the direction approaching the strike plate, and a pair of inner rolling elements having a vertical rotation shaft are disposed in the holder. In addition, the interval between the inner rolling elements is determined so that the dead bolt can move in the horizontal direction between the inner rolling elements, and the chamfered portions are formed at both corners of the horizontal projection of the tip of the dead bolt to be inserted into the strike hole. On the other hand, a pair of outer rolling elements having a vertical rotation axis are disposed at both side edge portions of the strike hole, and the interval between the pair of outer rolling elements is set larger than the interval between the inner rolling elements. In addition, A pair of pinions with a vertical rotation axis are supported on the upper plate upper surface and / or lower plate lower surface of the holder in a state where they are meshed with each other, and each pinion is disposed on the inner surface of the troyoke Each of the pair of horizontal racks meshed with each other.

  The self-adjusting strike according to the first aspect of the present invention configured as described above is based on the dead bolt caused by the wedge action generated between the inclined surfaces of the chamfered portion at the tip of the dead bolt and the inner and outer rolling elements. Therefore, the adjustment width is expanded by the horizontal dimension of the chamfered portion.

  In addition, a pair of outer rolling elements having a vertical rotation axis are disposed at both side edge portions of the strike hole, and the distance between the pair of outer rolling elements is set larger than the distance between the inner rolling elements. The adjustment range is further increased by the increase in the distance between the moving objects.

  Furthermore, since the dead bolt does not come into contact with the outer rolling element during unlocking, there is no inconvenience during unlocking due to the attachment of the outer rolling element.

  In addition, the automatic adjustment strike according to the invention of claim 2 can automatically correct the twist even if the holder tries to twist around the vertical axis by a dead bolt shifted laterally from the center of the strike hole. Various effects are obtained.

  Chamfered portions are formed at both corners of the horizontal projection at the tip of the dead bolt, and on the other hand, a pair of outer rolling elements having a vertical rotation axis are disposed on both side edge portions of the strike hole, and these pair of outer rolling elements are arranged. The object of the invention is to increase the adjustment range with a simple configuration in which the distance between the moving bodies is set larger than the distance between the inner rolling elements.

An embodiment of the invention described in claim 1 will be described below with reference to the drawings.
1 to 3, reference numeral 1 denotes a strike plate mounted on the door frame. A vertically long strike hole 2 is opened above the strike plate 1 in FIGS. 2 and 2.

  2 and 3 is a permanent magnet for taking a door opening / closing signal, which is attached to the lower back side (right side in FIG. 3) of the strike plate. This permanent magnet is related to the present invention. There is no explanation and no numbering.

  On the back side of the strike hole 2, a trowel 3 is mounted. The trolley 3 is a box-shaped body with one side open, and the trolley 3 in the illustrated embodiment is a vertically long one that also accommodates the permanent magnet.

  However, here, the portion above the partition plate 4 (see FIG. 3) is defined as troy, similar to the troy of the normal strike plate.

  As shown in FIG. 4, the opening side edge of the troyoke 3 in the illustrated embodiment is formed so as to expand slightly outward and form a part of an arc so as to hold an outer rolling element shaft described later. Has been.

  Further, each opening-side edge protruding slightly outward is formed with two notches, and the remaining portion is formed as a connecting piece 3a (see FIG. 2) as an elongated opening (numbered) formed around the strike hole 2. No) is inserted from the back side, and for example, the outside is caulked to reinforce the fixing portion of the troyoke 3.

  In this troyoke 3, a holder 5 having a U-shaped cross section (see FIG. 3) is guided so as to be movable in the front-rear direction (left-right direction in FIG. 3), and further, by the elasticity of the pair of biasing springs 6 and 6 Further, it is biased in the direction approaching the strike plate 1 (left side in FIG. 3).

  In the illustrated embodiment, the biasing spring 6 has a truncated cone shape. In FIG. 2, reference numeral 7 indicates a fixed claw for gripping the base of the biasing spring.

  A pair of inner rolling elements 8 and 8 are disposed in front of the holder 5 (downward in FIG. 1).

  The inner rolling element 8 in the illustrated embodiment is configured such that a collar 8b is rotatably fitted to a collar shaft 8a (see FIG. 2) that is suspended from both front end portions of the holder 5.

  In the illustrated embodiment, the frictional resistance is reduced by bringing the collar 8b into contact with the dead bolt so that it can roll, so that the collar shaft 8a is fixed to the holder 5 and the collar 8b is rotated around the collar shaft 8a. It is configured to be able to rotate.

  However, since the object of the present invention can be achieved if the collar 8b rolls, the collar 8b may be fixed to the collar shaft 8a and the collar shaft 8a may be rotatably supported by the holder 5.

  When the collar shaft 8a is thin as in the illustrated embodiment, the collar 8b is not smoothly rotated when the collar shaft 8a is elastically deformed due to the reaction force of the lateral pressure, so as shown in FIGS. The same number of guide grooves 9, 9 as the collar 8b carried by the collar shaft 8a are formed on the inner surface of the trowel, and the collar 8b may be slidably engaged therewith.

  In this case, each guide groove 9 has a function of reinforcing the collar shaft 8a and maintaining the position of the collar 8b in the length direction of the collar shaft 8a.

  The horizontal distance between the inner rolling elements 8, 8, that is, the horizontal distance in FIG. 1 is set so that the dead bolt 11 can move in the horizontal direction therebetween.

  By the way, dead bolts cannot be inserted into the strike holes unless they can move in the horizontal direction in the state of being inserted into the strike holes. The door will not rattle even if it moves between the inner rolling elements 8, 8.

  Prior to the introduction of the dead bolt 11, as indicated by the solid line in FIG. 1, the holder 5 is close to the strike plate, so that the tip of the dead bolt is the collar 8b at the initial stage of the introduction of the strike hole of the dead bolt. Therefore, the position adjustment of the dead bolt 11 by the inner rotating body 8 is performed reliably.

  Further, in FIGS. 1 and 3, reference numerals 12 and 12 denote reinforcing bars that are caulked to the inner end of the holder, and this reinforcing bar 12 increases the rigidity of the holder that receives a reaction force of a large lateral pressure. .

  On the other hand, as shown in FIG. 1, chamfered portions 13 are formed at both corners of the horizontal projection at the tip of the dead bolt 11.

  By forming the chamfered portion 13 at the tip of the dead bolt, the amount of adjustment by the inner rotating body 8 is the same as the horizontal dimension of the chamfered portion 13 as compared to the dead bolt described in Patent Document 1 where the chamfered portion 13 is not provided. Increase. Since the reason is clear from FIG. 1, detailed description is abbreviate | omitted.

  On the other hand, as shown in FIG. 1, a pair of outer rolling elements 14, 14 having a vertical rotation shaft are disposed at both side edges of the strike hole 2.

  As shown in FIG. 3, each outer rolling element 14 includes an outer rolling element shaft 14a and an outer collar 14b that is rotatably fitted on the outer rolling element shaft 14a.

  The distance between the outer rolling elements 14 and 14 in the horizontal direction is set to be larger than that of the inner rolling elements 8 and 8.

  In the illustrated embodiment, as shown in FIG. 5, the surface of the outer collar 14 b that rubs the outer peripheral surface in the front-rear direction is set to pass through the central axis of the inner rolling element 8.

  Incidentally, in order to provide the outer rolling element shaft 14a in the illustrated embodiment, as shown in FIG. 4, at the center of the arc of the opening side end edge portion of the troyoke 3 formed so as to form a part of the arc, A shaft hole 15 penetrating the ceiling plate of the troyoke 3 and the partition plate 4 is formed, and after inserting the outer rolling element shaft 14a from above into the shaft hole 15, the upper end of the outer rolling element shaft 14a is caulked and fixed. Like to do.

  Further, when the outer rolling element shaft 14a is inserted through the shaft hole 15, the outer collars 14b and 14b are also inserted through and inserted in the beginning.

  Furthermore, in the illustrated embodiment, as shown in FIG. 2, notches 16 and 16 are formed on the opening side edge of the strike hole 2 in shape engagement with the outer collar 14b. Similar to the groove 9 (see FIGS. 1 and 3), the outer rolling element shaft 14a is reinforced, and the outer collar 14b has a function of maintaining the position of the outer rolling element shaft 14a in the length direction.

  In the automatic adjustment strike according to one embodiment of the present invention configured as described above, the adjustment amount which is α when there is no outer rolling element 14 is β which is larger than α as shown in FIG. The desired function of the invention described in 1 is exhibited.

  Therefore, a motor-driven electric lock can be applied to the locking of a so-called airtight door that must compress the packing material provided around the door when the door is closed.

  6 and 7 show an automatic adjustment strike according to an embodiment of the invention described in claim 2, and this automatic adjustment strike is inserted into the strike hole while the tip of a dead bolt is engaged with the inner rolling element. In this case, twisting around the vertical axis of the holder is eliminated, and the movement of the holder in the front-rear direction is made smooth.

  That is, when the dead bolt is thrown into the strike hole to lock the door, when the chamfered portion of the dead bolt tip engages with the outer rolling element, the outer rolling element is firmly held by the strike, The position of the dead bolt in the front-rear direction is corrected by the wedge action generated between the outer rolling element and the tip of the dead bolt.

  However, when the dead bolt further enters the strike hole and the chamfered portion engages with the inner rolling element, the inner rolling element is carried by the movable holder, so that the holder is twisted around the vertical axis by half force. As a result, a crease occurs between the inner surface of the trolley and the holder, and the movement of the holder in the front-rear direction is not smooth.

  The automatic adjustment strike shown in FIG. 6 and FIG. 7 eliminates the above-mentioned inconveniences, and the configuration thereof includes an upper plate 5a (FIG. 6) and / or a lower plate 5b (lower plate 5b in the illustrated embodiment) of the holder 5. In addition, a pair of pinions 17 and 17 having the same pitch circle are rotatably supported in a state where they are engaged with each other by vertical rotation shafts 18 and 18 having flanges.

  On the other hand, horizontal racks 19, 19 that mesh with the pair of pinions 17, 17 are disposed on the inner surface of the troyoke 3.

  For example, this rack may be fixed to the inner surface of Troyoke with an adhesive, but in the illustrated embodiment, an upper piece of a vertically long (see FIG. 7) shallow box is cut out to form a rack on the inner surfaces of a pair of side plates. It becomes.

  Then, the mounting plate 21 (see FIG. 6) corresponding to the bottom of the shallow box is screwed to the upper surface of the partition plate with screws, for example. 6 and FIG. 7, the same reference numerals as those in FIG. 1 to FIG. 5 correspond to the same parts.

  The self-adjusting strike according to an embodiment of the present invention having the above-described configuration according to the second embodiment is, as is apparent from FIG. 7, the pair of pinions 17 and 17 are opposite to each other as the holder 5 moves in the front-rear direction. Rotate in the direction.

  Therefore, when one pinion moves in either of the front and rear directions, the other pinion also moves in the same direction by the same amount, so that the holder 5 can be prevented from turning around the vertical axis, and the holder can move smoothly.

The horizontal sectional view of the automatic adjustment strike by one Example of the invention of Claim 1. The front view of the automatic adjustment strike by one Example of the invention of Claim 1. A vertical sectional view of an automatic adjustment strike according to an embodiment of the invention as set forth in claim 1. The partial cross-sectional top view of Troyoke. The horizontal sectional view similar to FIG. 1 for demonstrating the function of an automatic adjustment strike. A vertical sectional view of an automatic adjustment strike according to an embodiment of the invention as claimed in claim 2. Sectional drawing by the VII-VII line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Strike board 2 Strike hole 3 Troyoke 4 Partition plate 5 Holder 6 Energizing spring 7 Fixing claw 8 Inner rolling element 9 Guide groove 11 Dead bolt 12 Reinforcement bar 13 Chamfer 14 Outer rolling element 17 Pinion 18 Rotating shaft 19 Rack 21 Attachment Board

Claims (2)

  In the strike troyoke mounted on the door frame, there is provided a holder that is guided so as to be movable in the front-rear direction perpendicular to the strike plate and biased in the direction close to the strike plate, and in this holder, a vertical rotating shaft is provided. A pair of inner rolling elements is disposed, and the interval between the inner rolling elements is determined so that the dead bolt can move in the horizontal direction between the inner rolling elements. Chamfered portions are formed at both corners of the horizontal projection of the tip, and on the other hand, a pair of outer rolling elements having a vertical rotation axis are disposed at both side edge portions of the strike hole, and the distance between the pair of outer rolling elements A self-adjusting strike characterized in that is set larger than the interval between the inner rolling elements.   A box-shaped holder with an opening on one side is stowed inside the strike troyoke attached to the door frame in a nested manner with the opening facing the strike plate, and this holder is moved in the front-rear direction perpendicular to the strike plate. In addition to guiding in a possible manner and urging in the direction approaching the strike plate, a pair of inner rolling elements having a vertical rotating shaft is disposed in the holder, and a dead bolt is provided between the inner rolling elements. The inner rolling elements are spaced so that they can move in the horizontal direction, while chamfers are formed at both corners of the horizontal projection at the tip of the dead bolt that is inserted into the strike hole, and on the other hand, both ends of the strike hole A pair of outer rolling elements having a vertical axis of rotation is disposed at the edge, the distance between the pair of outer rolling elements is set larger than the distance between the inner rolling elements, and the upper plate upper surface of the holder and / or Or A pair of pinions having a vertical rotation axis are supported on the lower surface of the plate with the same pitch circle in mesh with each other, and each pinion is mounted on each of a pair of horizontal racks disposed on the inner surface of the troyoke. Self-adjusting strike characterized by meshing.

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