JP4889461B2 - Power transmission mechanism in lock - Google Patents

Description

  The present invention relates to a power transmission mechanism in a lock.

  Patent Document 1 describes a lock handle device for a door. The lock handle device is intended to smoothly rotate the handle. As a means for achieving the object, the inner peripheral wall surface of the fitting hole of the receiving seat is formed in a taper shape, while the outer peripheral wall surface of the shaft portion of the handle that is in sliding contact with the inner peripheral wall surface is also formed in a taper shape. A lubricating oil reservoir is formed on one of the tapered peripheral surfaces.

  Although there is a description in this Patent Document 1 that the handle itself as the operating means is made smooth, it is mentioned that the power transmission mechanism (particularly, the pinion) that is operated by the operating force of the operating means is smoothly rotated. There is no.

  By the way, not only the lock handle for the door, but also the outer cylinder is provided on the outer wall surface of the door, while the thumb turn or the inner cylinder is provided on the inner wall surface of the door, and the inner and outer operation members are composed of a pinion member and a rack. When interlocking with each other via the mechanism, it is desired to improve the operational feeling of the internal and external operating members (particularly, the operational feeling when raising and lowering the thumb turn knob).

  In Patent Document 2 and Patent Document 3, (a) internal and external cylinders as operation members are attached to one sliding door, and these cylinders are interlocked with each other via a power transmission member including an interlocking member, a pinion member, a rack, and the like. (B) When a cylinder is operated, matters such as an operation that moves up and down or a sickle as a locking piece rotates about a support shaft through an interlocking member are described.

An outer cylinder is attached to the outer wall surface of one sliding door, while a thumb turn linked to the outer cylinder is attached to the inner wall surface of the sliding door, and the outer cylinder is rotated using a key or the thumb turn is rotated. Then, it is also obvious to those skilled in the art that the sickle appears and disappears from the front of the lock box.
Japanese Patent Laid-Open No. 2003-120078 Japanese Patent Laid-Open No. 2005-120606 JP 2005-1888083 A

  The first object of the present invention is to smoothly rotate the pinion member that is actuated by the operating force of the operating means, and to improve the operational feeling of the internal and external operating members (particularly the operational feeling when raising and lowering the thumb turn knob). It is. The second purpose is to securely support the pinion member so that it does not rattle. The third purpose is to effectively utilize the internal space of the opening / closing body. In other words, the thickness of the other receiving seat (inner receiving seat) in the axial direction should be kept as small as possible. Another additional objective is to prevent all lubricants from flowing downward and accumulating in one place while the lock is stopped.

  The power transmission mechanism in the lock according to the present invention includes a cylinder provided on one receiving seat, a pinion member that is rotated by a driving force of the cylinder, and an operation member that operates in accordance with the movement of a rack that meshes with the pinion member. The pinion member has a transmission gear portion that meshes with the rack, an engagement hole on one side, and a reservoir for filling lubricant on the other side. The pinion member is rotatably supported via a sliding contact surface that engages with the rear end of the cylinder and a sliding contact surface of the other receiving seat, and the center line O of the pinion member is the cylinder. It is characterized by being arranged in parallel in a state in which the axial center of each and the center of the annular recess are matched.

  The power transmission mechanism in the lock according to the present invention includes a cylinder provided on one receiving seat, a pinion member that is rotated by the driving force of the cylinder, and an operation that operates in accordance with the movement of the rack that meshes with the pinion member. And a plurality of pinion members disposed between the cylinder and the rack so that the transmission gear portions mesh with each other, and at least one of these pinion members. Has a reservoir portion for filling the lubricant on the side surface perpendicular to the center line O, and the center line O passing through the reservoir portion coincides with the center of the annular recess formed in the receiving seat. And

(1) Since the reservoir portion 19 of the pinion member 6 is filled with a lubricant, the other side surface 16c in the axial direction of the pinion member 6 and the engagement surface of the annular recess that is in sliding contact with the other side surface 16c A thin film of lubricating oil produced by replenishment from the reservoir 19 exists on the boundary surface of the surface and rotates smoothly.
(2) Since the center line O of the pinion member 6 is juxtaposed in a state where the axis of the cylinder 5 is aligned with the center of the annular recess 30, for example, the pinion member 6 is not so-called loose. In other words, the pinion member 6 includes a front side slidable contact engaging surface 20 that engages with the rear end portion 5 b of the cylinder 5, and a rear stepped stepwise shape that engages with the slidable contact engaging surface 31 of the inner receiving seat 3. Since it is supported on both the cylinder 5 and the other receiving seat 3 in a straight line through the fitting portion, there is little wear and it rotates smoothly. The same applies to the case of the second embodiment in which the pinion member 6 includes the characteristic portion of the present invention and is supported by the inner and outer receiving seats.
(3) In the case of the embodiment in which the pinion member 6 is supported using the cylinder fixing cylinder 4, the effect (2) can be achieved reliably.
(4) In the embodiment in which the operation member 9 is a thumb turn knob including a thumb turn shaft, and a long plate-like rack 15 is connected to the thumb turn shaft, the power for connecting the cylinder 5 and the inner thumb turn. The components of the transmission mechanism can be composed of one or a plurality of pinion members.
(5) In the case of the embodiment in which a plurality of small protrusions are formed radially inwardly on the inner peripheral surface of the laterally-facing recess, since the lubricant remains in the small protrusions, all the lubricants remain during the lock stop. It does not flow downward and collect in one place. In addition, since the lock has more time during the stop than the time during which the lock is operating, the lubricant is distributed evenly as much as possible during the stop.

  Hereinafter, the best mode (first embodiment) for carrying out the present invention shown in FIGS. 1 to 12 will be described.

(1) Environment for Implementing the Invention FIG. 1 is an explanatory view of a longitudinal section showing an embodiment of the invention, and FIGS. 2 to 5 use FIG. 1 as a reference drawing for explanation. 2 is an explanatory diagram from a plan view, FIG. 3 is an explanatory diagram from a left side view, FIG. 4 is an explanatory diagram from a right side view, and FIG. 5 is an explanatory diagram based on line 5-5 in FIG.

  First, with reference to FIG. 1 thru | or FIG. 5, the environmental member and main structural member of implementation of this invention are demonstrated. 1 is a sliding door showing an example of an opening / closing body, 1a is an outer wall of the sliding door, 1b is an inner wall thereof, and 2 is one receiving seat (hereinafter referred to as an “outer receiving seat”) fitted and fixed to the outer wall surface side of the sliding door 1. 3 is the other receiving seat (hereinafter referred to as “inner receiving seat”) fitted and fixed to the inner wall surface side of the sliding door 1, 4 is a cylinder fixing cylinder fitted into the outer receiving seat 2, and 5 is a fixed cylinder 4. 5a is the front end of the cylinder, 5b is the rear end, 6 is the pinion member built in the receiving seat 3, 7 is the key for the cylinder, 8 is the thumb turn shaft, and 9 is the outer end of the thumb turn shaft. 10 is a lock box (FIGS. 2 and 3) provided in the door tip of the sliding door 1, and 11 is a sickle as a locking piece. Therefore, the lock of the present embodiment is a sliding door lock, and a power transmission mechanism is incorporated in the sliding door lock.

(2) Basic structure of the power transmission mechanism The power transmission mechanism for the sliding door lock includes inner and outer receiving seats 3 and 2 that face the both side walls 1 a and 1 b of the sliding door 1.

  In accordance with the movement of one cylinder (outer cylinder) 5 provided on the outer receiving seat 2, a pinion member 6 that rotates by a driving force of the cylinder 5, and a rack 15 that meshes with the pinion member 6. And an operating member (thumbnail knob or inner cylinder not shown) 9 that moves the rack 15 by operating force.

  The pinion member 6 has a transmission gear portion 17 that meshes with the rack 15 on the peripheral surface 16a, and has a different diameter engagement that engages with the tail piece 12 of the cylinder 5 on one axial side surface 16b. On the other hand, there is a retaining portion 19 for the lubricant filler on the other side surface 16c in the axial direction, and the pinion member 6 is a front sliding member that engages with the rear end portion 5b of the cylinder 5. It is rotatably supported via the contact engaging surface 20 and the sliding contact surface 31 of the annular recess of the inner receiving seat 3, and its center line O is the center of the cylinder 5 and the center of the annular recess. And are in parallel to match.

  In the above configuration, when the key 7 is operated, the tailpiece 12 that protrudes from the rear end 5b and engages with the different diameter engagement hole 18 of the pinion member 6 is rotated by the operation force. 6 rotates the required amount in the locking direction in which the locking piece 11 protrudes or in the unlocking direction in which the locking piece 11 moves backward.

At this time, the pinion member 6 is a lateral recess whose reservoir portion 19 faces the inner wall bottom surface 30a of the annular recess 30 of the inner receiving seat 3, and the reservoir portion 19 is filled with a lubricant (for example, grease). Accordingly, the other side surface 16c in the axial direction of the pinion member 6 and the boundary surface (contact surface) of the engagement surface of the annular recess 30 that is in sliding contact with the other side surface 16c are replenished from the reservoir portion 19. There is a thin film of lubricating oil that results from the rotation, which rotates smoothly.
When the pinion member 6 rotates smoothly, the rack 15 that meshes with the pinion member 6 moves in the linear direction. In this embodiment, since the upper end of the rack 15 is connected to the thumb turn shaft 8, the thumb turn (the shaft and the knob) as the operation member 9 moves simultaneously in the same direction as the rack 15 moves.

  In other words, when the knob 9 of the operation member is operated, the pinion member 6 is rotated through the vertical movement of the rack 15. Therefore, when either the key 7 or the operation member 9 is operated, the locking piece 11 appears and disappears from the front of the lock box 10 via the operating piece 13 in the lock box 10.

(3) Pinion member 6
6 to 8 show a specific configuration of the pinion member 6. 6 is a schematic explanatory view of a longitudinal section, FIG. 7 is an explanatory view from the left side view, and FIG. 8 is an explanatory view from the right side view. As is clear from these drawings, the pinion member 6 is formed in a short cylindrical shape with one end opening based on the form of a hollow cylinder. In FIG. 6, for convenience of explanation, a reference numeral “center line O” is attached to the axis of rotation (axis) of the pinion member 6. In addition, the symbol “AB” is given to the bus of the pinion member 6 that is parallel to the center line O.

  The transmission gear portion 17 of the peripheral surface 16a described above is a partial gear formed over a range of approximately 90 degrees in the radially outward direction. Although not shown in detail, the engagement holes 18 of different diameters formed along the center line O from the side surface 16b side are formed symmetrically with the engagement holes 18 on the inner periphery. And an engagement surface that engages with the tail piece 12. The large-diameter opening edge portion of the one side surface 16b communicating with the engagement hole 18 includes, for example, a short truncated cone shape, and the inner peripheral surface of the large-diameter opening edge portion engages with the rear end portion 5b of the cylinder 5. This is a sliding contact surface 20 to be engaged.

  On the other hand, the reservoir portion 19 for the lubricating oil filler has a partition wall 21 orthogonal to the bus bar “AB” at a portion near the other side surface 16c, and the partition wall 21 has a left and right opening with a large engagement on the left side. It is divided into a joint hole 18 and a small lateral recess 19 on the right side.

  Thus, the annular peripheral wall 22 forming the pool portion 19 is located on the inner side of the bus bar “AB” and slightly protrudes from the other side surface 16c. Accordingly, the other side surface 16c of the pinion member 6 is a fitting portion having a stepped cross section. Further, as shown in FIG. 8, a plurality of small protrusions 23 are formed on the inner peripheral surface of the reservoir portion 19 with a predetermined interval in the radial inner direction.

  As shown in FIG. 1, the pinion member 6 configured in this way includes a sliding contact surface 20 that engages with the rear end portion 5 b of the cylinder 5 and a sliding contact between an annular recess formed in the inner receiving seat 3. In a state of being rotatably supported on the engagement surface, the center line O is juxtaposed with the axis of the cylinder 5 and the center of the annular recess.

(4) Rack 15
An example of the rack 15 is shown in FIGS. Here, FIG. 9 is a front view of the rack. 10 is a sectional view taken along line 10-10 in FIG. 9, and FIG. 11 is a sectional view taken along line 11-11 in FIG. The reference numerals for detailed items are omitted.

  The rack 15 is formed in a long plate shape, and its upper end portion 15 a is connected to the thumb turn shaft 8. The upper end surface of the rack 15 can be engaged with the receiving surface of the long plate-like inner receiving seat 3. The long plate-like rack 15 is bent at a portion near the upper end, and side walls 15d and 15d are formed opposite to the left and right ends extending from the bent portion 15b to the lower end 15c having an opening or notch. Has been. And the engagement hole 25 with which the transmission gear part 17 of the pinion member 6 meshes with one of the opposing side walls 15d is aligned in the vertical direction.

(5) Inside seat 3
The configuration of the inner receiving seat 3 will be described with reference to FIGS. 1, 4, and 12. The inner receiving seat 3 is also formed in a long plate shape. An annular recess 30 is formed at the lower end of the inner receiving seat 3 so as to face the outer receiving seat 2.

  As described above, the reservoir portion 19 of the pinion member 6 is a laterally facing recess facing the inner wall bottom surface (vertical surface in the drawing) 30a of the annular recess 30 of the inner receiving seat 3, so that as shown in FIG. When the pinion member 6 is supported on the sliding contact surface 31 having a stepped cross section of the inner receiving seat 3, the inner wall bottom surface 30a of the annular recess 30 and the inner wall surface of the lateral recess make the lubricant oil not shown. A filling volume is defined.

  Thus, in this embodiment, the sliding contact surface 31 is located on the front side and has a large-diameter first engagement surface 31a that engages with the rear end of the pinion member 6, and the first engagement. The second engaging surface 31b has a small diameter and is located on the back side of the surface 31a and is continuous with the rear end portion and engages with the protruding wall shape of the pool portion or the outer surface of the annular peripheral wall 22.

  The annular recess 30 of the present embodiment has a stepped sliding contact surface 31 to an inner wall bottom surface 30a, and not only a small-diameter recess that supports the rear end portion of the pinion member 6, but also the pinion member 6 And a large-diameter recess that communicates with the small-diameter recess.

  Further, on the inner side (the left side in the drawing) of the inner receiving seat 3, a fitting recess into which a flange or mounting protrusion 4 a formed on the inner end (rear end) 4 a of the cylinder fixing cylinder 4 is fitted. The internal thread portion for the place 32 and the fixing tool is formed.

  In the present embodiment, there are no particular reference numerals, but there are attachment portions for the cylinder fixing cylinder 4 (inner female screw portion) and attachment portions for the outer receiving seat 2 (approx. A penetrating inner female thread portion) is formed.

  On the other hand, a laterally-facing recess 35 directed to the indoor side is formed at the thick upper end (the end opposite to the annular recess) that continues to the lower end of the inner receiving seat 3 via the intermediate portion. A vertical long hole 36 for the thumb turn shaft 8 is formed on the bottom surface (vertical surface in the drawing) of the lateral recess 35. In addition, a receiving surface 37 that can contact the upper end surface of the rack 15 is formed on the inner wall surface of the upper end portion of the inner receiving seat 3.

(6) Outer receiving seat 3 and cylinder fixing cylinder 4
The cylinder 5 of this embodiment is housed in a cylinder fixing cylinder 4 that is supported by the fitting hole 41 of the outer receiving seat 3. The fixed cylinder 4 is joined to the inner wall surface (attachment portion of the inner receiving seat) of the fitting recess 32 of the inner receiving seat 3 so that the axial center thereof coincides with the center O of the pinion member 6. And it is fixed via an unnumbered fastener. The specific configuration of the outer receiving seat 3 and the cylinder fixing cylinder 4 is not a limiting requirement of the invention, and thus detailed description thereof is omitted.

  In the example (first example) shown in the embodiment of the invention, when the outer cylinder is rotated using the key, or the thumb turn knob is rotated, the locking piece 11 is removed from the front of the lock box 10. Since appearing and appearing is an obvious matter as described in Patent Document 1, Patent Document 2, etc., details thereof are omitted.

  Further, in the first embodiment, the reservoir portion 19 for filling the lubricant is formed on the other side surface of the pinion member 6 so as not to increase the thickness of the other receiving seat (inner receiving seat) 3 in the axial direction as much as possible. However, if the thickness of the other receiving seat 3 in the axial center direction is not a problem, the reservoir portion 19 for filling the lubricant may be formed on the inner wall bottom surface 30a of the annular recess 30 of the other receiving seat 3. Good (equal items). Also in the case of this equivalent embodiment, it is desirable to provide a plurality of small projections 23 in the laterally recessed reservoir portion 19.

Furthermore, in the first embodiment, the example of a single pinion member has been described, but it is also possible to arrange the pinion members so that their transmission gear portions mesh with each other in the vertical direction or the horizontal direction.
As a precaution, FIGS. 13 to 15 show a second embodiment in which a plurality of pinion members are arranged in the vertical direction. In addition, the same code | symbol is attached | subjected to the part same as 1st Example, and the overlapping description is omitted.

  In the second embodiment, the main difference from the first embodiment is that a plurality of pinion members 6 and 6A are arranged in the vertical direction. Here, with reference to FIG. 13, the one located above is referred to as “first pinion member 6”, while the one located below is referred to as “second pinion member 6A”.

  The first pinion member 6 has the same configuration as the pinion member 6 of the first embodiment, but is not directly engaged with the engagement hole 25 of the rack 15. In other words, it is indirectly engaged with the engagement hole 25 of the rack 15 via the lower second pinion member 6A.

  Therefore, like the pinion member 6 of the first embodiment, the first pinion member 6 is slidably engaged with the sliding contact surface 20 that engages with the rear end portion of the cylinder 5 and the other receiving seat 3A. It is rotatably supported via the surface 31 and its center line O coincides with the axis of the cylinder 5.

  On the other hand, the second pinion member 6A is provided with a transmission gear portion 17A that meshes with the transmission gear portion 17 of the first pinion member 6 on the entire outer periphery, and in the engagement hole 25 of the rack 15. Directly engaged.

  Therefore, the second pinion member 6A is supported by the inner and outer receiving seats 3A and 2A so as to mesh with the rack, while the center line O does not coincide with the axis of the cylinder. In addition, as shown in FIG. 13, the second pinion member 6A has left and right side portions perpendicular to the axis (the center line of the pinion member) and left and right reservoir portions 19 and 19 for filling the lubricant. A pair is formed.

  As described above, the plurality of pinion members 6 and 6A of the power transmission mechanism of the second embodiment are disposed between the cylinder 5 and the rack 15 so that the transmission gear portions 17 and 17A mesh with each other. At least one of the first and second pinion members 6, 6A has a reservoir portion 19 for filling a lubricant on a side surface orthogonal to the center line O, and the center line O passing through the reservoir portion 19 is: It coincides with the centers of the annular recesses 30 and 30A formed in the inner receiving seat 3A or the inner and outer receiving seats 3A and 2A, respectively.

  In the second embodiment, preferably, as in the first embodiment, the side pin of the first pinion member 6 is a laterally recessed reservoir facing the inner wall bottom surface of the annular recess 30 of the other receiving seat 6A. The portion 19 should be formed, but if the reservoir portion 19 is not formed on the side surface of the first pinion member 6, but the reservoir portion 19 is formed on the side surface of the second pinion member 6, 6A, Desirably, as in the second embodiment, the reservoir portions 19 and 19 having the same configuration are formed on both the left and right side surfaces, and the sliding contact engagements of the annular recesses 30 and 30A formed in the inner and outer receiving seats 3A and 2A, respectively. The surfaces 31A and 31A should be supported.

  When the present invention is disposed in the lock box, the inner and outer receiving seats correspond to the wide side walls of the lock box and the support members provided on the wide side walls.

  The present invention is mainly used in the locksmith and joinery industries.

1 to 12 are explanatory views showing a first embodiment of the present invention. FIGS. 13 to 15 are explanatory views showing a second embodiment of the present invention.
Schematic explanatory drawing of a longitudinal section. Explanatory drawing from planar view which uses FIG. 1 as a reference | standard drawing of description. Explanatory drawing from the left side view (part is notched). Explanatory drawing from the right side view. FIG. 1 is an explanatory view with reference to FIG. The schematic explanatory drawing of the longitudinal cross-section of a pinion member. Explanatory drawing from the left side view. Explanatory drawing from the right side view. The front view of a rack. FIG. 10 is a sectional view taken along line 10-10 in FIG. 9; FIG. 11 is a sectional view taken along line 11-11 in FIG. 9; The schematic cross-section explanatory drawing of an inner side receiving seat. The schematic explanatory drawing similar to FIG. 1 of 2nd Example. Explanatory drawing similar to FIG. 5 of 2nd Example. Schematic explanatory drawing which shows the principal part of 2nd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Opening and closing body, 1a ... Outer wall of sliding door, 2, 2A ... One receiving seat (outside receiving seat) 3, 3A ... The other receiving seat (inner receiving seat), 4 ... Cylinder fixed cylinder, 4a ... Mounting protrusion Piece, 5 ... cylinder, 5b ... rear end, 6 ... pinion member (or first pinion member), 6A ... second pinion member, 16a ... peripheral surface of the pinion member, 16b ... one side surface in the axial direction, 16c ... shaft Other side of direction, O ... center line of pinion member, AB ... bus line of pinion member, 8 ... thumb turn shaft, 9 ... operating member (thumb knob), 10 ... lock box, 11 ... locking piece (sickle), 12 ... tail piece, 13 ... operating piece in lock box, 15 ... rack, 15d ... rack side wall, 17, 17A ... transmission gear part, 18 ... engagement hole, 19 ... reservoir (horizontal recess), 20 ... sliding Contact engagement surface, 21 ... partition wall, 22 ... annular peripheral wall, 23 ... small protrusion, 25 ... rack engagement holes, 30, 30A ... annular recess, 30a ... inner wall bottom surface (vertical surface in the drawing), 31, 31A, ... sliding contact surface, 31a ... large diameter first engagement surface, 31b ... Second engagement surface having a small diameter, 32... Fitting recess, 37.

Claims (8)

This is a power transmission mechanism in a lock comprising a cylinder provided on one receiving seat, a pinion member that rotates by the driving force of the cylinder, and an operation member that operates in accordance with the movement of a rack that meshes with the pinion member. The pinion member has a transmission gear portion that meshes with the rack, has an engagement hole on one side surface, and has a reservoir portion for filling a lubricant on the other side surface. It is rotatably supported via a sliding contact engaging surface that engages with the rear end portion and a sliding contact engaging surface of the other receiving seat, and its center line O is between the axial center of the cylinder and the center of the annular recess. A power transmission mechanism in a lock characterized by being arranged in parallel with each other. 2. The power transmission mechanism in a lock according to claim 1, wherein the pool portion of the pinion member is a laterally facing recess facing the inner wall bottom surface of the annular recess of the other receiving seat. 2. The sliding engagement surface of the annular recess according to claim 1, wherein the sliding contact surface of the annular recess is located on the front side and engages with the rear end portion of the pinion member, and the first engagement surface. A power transmission mechanism in the lock, comprising a second engagement surface having a small diameter that is located on the rear side and that is continuous with the rear end portion and engages with the outer surface of the annular peripheral wall of the reservoir portion. . 2. The power transmission mechanism in a lock according to claim 1, wherein the operation member is a thumb turn knob including a thumb turn shaft, and a long plate-shaped rack is connected to the thumb turn shaft. 2. The cylinder according to claim 1, wherein the cylinder is housed in a cylinder fixing cylinder supported by the fitting hole of one of the receiving seats, and the fixing cylinder has the other axis so that its axial center coincides with the center O of the pinion member. A power transmission mechanism in a lock, wherein the power transmission mechanism is joined to an end face of a receiving seat. In Claim 1, the reservoir portion for filling the lubricant is formed in a laterally recessed shape, and a plurality of small protrusions are formed radially inward on the inner peripheral surface of the laterally recessed portion. A power transmission mechanism in a lock characterized by the above. This is a power transmission mechanism in a lock comprising a cylinder provided on one receiving seat, a pinion member that rotates by the driving force of the cylinder, and an operation member that operates in accordance with the movement of a rack that meshes with the pinion member. A plurality of pinion members are disposed between the cylinder and the rack so that the transmission gear portions mesh with each other, and at least one of these pinion members is lubricated on a side surface perpendicular to the center line O. A power transmission mechanism in a lock having a reservoir portion for oil filling, and the center line O passing through the reservoir portion coincides with the center of an annular recess formed in a receiving seat. The first pinion member according to claim 7 is rotatably supported via a sliding contact engaging surface that engages with a rear end portion of the cylinder and a sliding contact engaging surface of the other receiving seat, and The center line O coincides with the axis of the cylinder, while the second pinion member is supported by the receiving seat so as to mesh with the rack, while the center line O does not coincide with the axis of the cylinder. Power transmission mechanism in the lock.

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