JP5004710B2 - Security thumb turn - Google Patents

Description

  The present invention relates to a security thumb turn that rotates an operation input portion (switch) provided on a knob member with a finger while rotating the knob member in a predetermined direction.

  In Patent Document 1, as shown in FIG. 14, “a fixed cylinder 21 fixed to the indoor surface side of the door, and a fixed cylinder 21 that is rotatably provided and connected to an input / output shaft 37 of the lock box. A thumb-turn cylinder 43 having a core shaft 35, a plate-like knob 41 protruding to the indoor side, and rotatably installed in the fixed cylinder 21, and slidable in the thumb-turn cylinder 43 in the direction perpendicular to the axis. And a pair of stoppers 49, 51 that project from the outer periphery of the thumb turn cylinder 43 and engage with the fixed cylinder 21 to prevent the rotation of the thumb turn cylinder 43, and the stoppers 49, 51. A pair of stopper springs 53 urging in the opposite direction and a pair of button legs 63, 65 that are simultaneously pressed by the front and back surfaces of the knob 41 and simultaneously release the engagement of the stoppers 49, 51. 63b, 65b, A cylindrical rotor 67 fixed to the thumb turn cylinder 43 and rotated integrally with the thumb turn cylinder 43, and the rotation of the rotor 67 is transmitted to the core shaft 35 by sandwiching the protruding plate 39 of the core shaft 35. In addition, a pair of clamping plates 69 that are opened by the projection plate 39 with respect to rotational input from the core shaft 35 and operate the pair of stoppers 49 and 51 in the disengagement direction by the opening operation. The thumb turn having 71 "is described (the drawings and reference numerals are the same as those in the patent publication for the convenience of explanation).

  In FIG. 14, the fixed cylinder 21 has a pair of fixing portions 23, 23 projecting from the rear end portion thereof, and fixing holes 25 are formed in these fixing portions 23, 23, respectively. On the other hand, a cylindrical decorative cylinder 29 having a central hole 27 is fitted on the distal end side. Therefore, the fixed cylinder 21 includes a decorative cylinder 29, and a conical decorative ring 31 having a flat tip is externally provided on the outer peripheral side of the decorative cylinder 29. The fixed cylinder 21 has a plurality of notch-like engaging grooves 55 in which the engaging end portions of the pair of stoppers 49 and 51 are respectively engaged and disengaged at the same time.

  The pair of button legs 63 and 65 are formed separately from the pair of stoppers 49 and 51, and are buttons as input portions that protrude from the window of the knob 41 toward the distal end portion with reference to the support shaft 61. 63b, 65b, and engaging leg ends 63c, 65c inserted into the leg end insertion holes 49b, 51c of the stoppers 49, 51 at the rear ends.

  Reference numeral 33 denotes a spring disposed between the bent portion 31a at the rear end of the decorative ring 31 and the rear end face of the decorative cylinder 29, reference numeral 75 denotes a pair of sandwiching plate springs built in the rotor 67, and reference numeral 91 denotes It is a rotation transmission mechanism.

Here, it is as follows when the problem (these are main differences with the Example of this invention) of the thumb turn 100 of patent document 1 is pointed out simply.
(1) The pair of button legs 63, 65 and the pair of stoppers 49, 51 that move in the radial direction of the fixed cylinder 21 by the input of the button legs 63, 65 are separate members. Therefore, the sum of the button legs 63 and 65 as the input members and the stoppers 49 and 51 as the operation obstacles constitutes “four members”, and the number of parts of the input member on the knob side and the operation obstacles increases.
(2) The pair of sandwiching plates 69 and 71 respectively engaged with the pair of stoppers 49 and 51 and the projection plate 39 of the thumb turn shaft (core shaft) 35 are separate members. Therefore, as in the case of (1), the number of members moved from the input / output shaft 37 (Dalma side) via the thumb turn shaft 35 increases. For the reasons (1) and (2), the number of parts constituting the rotation transmission mechanism is very large.
(3) Further, both end portions of the two stopper springs 53 are formed on the hook-shaped attachment portions of the pair of stoppers 49 and 51 so that the pair of stoppers 49 and 51 are engaged with the engagement grooves 55 of the fixed cylinder 21. On the other hand, since it has to be stretched so as to be linked to each other, the installation is troublesome.

  In addition, the characteristic part (core) of the invention of Patent Document 1 is “a rotor that is rotatably mounted in the fixed cylinder and rotatable with the knob member and the thumb-turn shaft, and is disposed in the fixed cylinder so as to intersect the rotor, and A movable obstacle that engages with and disengages from the engaging groove of the fixed cylinder, the leg on the inner end side engages with the movable obstacle, and the input part on the distal end side protrudes from the surface of the knob member. A rocking lever supported by a support shaft, and a security thumb turn provided with a biasing means for constantly biasing the movable obstacle in the engaging direction so that the swinging lever is picked and the member is locked. .

Therefore, the idea of the present invention is basically the same as the characteristic part of the invention of Patent Document 1 except for a part. Further, a specific configuration of the picking member of the security thumb turn, particularly a cap, is described in Patent Document 2.
JP 2005-42498 A JP 2006-2537 A

  An intended object of the present invention is to reduce the number of parts of the input member on the knob side and the operation obstacle. The second purpose is to improve the thumb-turn shaft and reduce the number of parts constituting the rotation transmission mechanism referred to in Patent Document 1 as much as possible. The third object is that a biasing means for biasing the swing lever can be easily attached.

The security thumb turn of the present invention includes a knob member rotatably provided on the fixed cylinder, a rotor rotatable with the thumb turn shaft, an engagement groove of the fixed cylinder disposed in the fixed cylinder so as to intersect the rotor, The movable obstacle to be engaged and disengaged, the leg on the inner end side engages with the movable obstacle, and the pivot is supported via the support shaft on the knob member side so that the input portion on the tip end side protrudes from the surface of the knob member. In the crime prevention thumb turn provided with a biasing means for constantly biasing the movable obstacle in the engaging direction so that the swinging lever is held in a locked state, the movable obstacle and the pivot The lever is one or more swing levers integrally formed, and the swing lever has at least the input portion on the distal end side with respect to the support shaft, and is connected to the input portion. failure engaging portion 及 which the rear end side has a function of said movable Shogaiko And having a shaft engaging portion to be engaged with the engagement portion of the front engagement wall of the thumb-turn shaft.

  In the above configuration, the rotor includes a cylindrical portion rotatably mounted on the fixed cylinder, and a connecting arm extending from the tip of the cylindrical portion to the inside of the knob member, and the knob includes the knob member. Is fixed. In addition, the front engagement wall of the thumb turn shaft is provided with a plurality of engagement portions that respectively engage with the rear end portion of the rotor and the shaft engagement portion of the swing lever. Further, the biasing means is disposed inside the knob member. In addition, a total of two swing levers having the same configuration are superimposed on the support shaft, and the button-like input portions of the swing levers 32A and 32B are arranged on the surface of the knob member while holding the biasing means. It protrudes from each window on the back at the same time.

(A) The number of parts of the input member on the knob side and the operation obstacle can be reduced.
(B) As a whole, the number of parts of the members constituting the rotation transmission mechanism referred to in Patent Document 1 is reduced.
(C) The biasing means for biasing the swing lever can be easily attached.

  Hereinafter, the best mode (first embodiment) for carrying out the present invention shown in FIGS. 1 to 8 will be described.

(1) Environment for carrying out the invention The environment for carrying out the invention is the same as the example of FIG. 14 (Patent Document 1). However, the thumb turn 1 of the present invention can be attached not only to the indoor side of the door but also to the outdoor side of the door. Hereinafter, specific requirements of the present invention will be sequentially described, but detailed matters will be omitted from the drawings and the description thereof. Reference numeral parentheses correspond to components of a conventional example of FIG. 14.

(2) Fixed cylinder 2 and main members FIG. 1 is a perspective view of thumb turn 1 (100), FIG. 2 is a schematic longitudinal sectional view showing the internal structure, and FIG. 3 is a swing lever 32 (49, 51) constituting the present invention. FIG. 4 is a schematic cross-sectional explanatory view showing the internal structure.

  As shown in FIGS. 2 to 4, the fixed cylinder 2 (21) has an unnumbered large-diameter cylinder part and a small-diameter cylinder part connected to the large-diameter cylinder part in a step shape. Since some of the main members (the swing lever 32, the rotor 11, and the thumb turn shaft 45) of the present invention are incorporated in the fixed cylinder 2, they correspond to the housing of the thumb turn 1.

  Thus, 3 is the inside of the housing of the fixed cylinder 2, and the engaging groove 4 (55) for the swing lever 32 is formed in the axial direction of the thumb turn shaft 45 (core shaft 35) on the inner peripheral wall forming the housing interior 3. One or more are provided.

  The housing interior 3 of the fixed cylinder 2 communicates with a central opening 5 formed at the tip of the fixed cylinder 2. The radius of the central opening 5 is smaller than that of the storage interior 3. Further, a groove 6 is formed in the circumferential direction on the inner peripheral wall of the rear end portion of the storage interior 3 of the fixed cylinder 2, and a retaining piece 7 is inserted into the groove 6.

Therefore, when the cylindrical portion 12 of the fixed cylinder 2 and the front portion of the thumb turn shaft 45 are fitted in the housing interior 3 of the rotor 11, the center edge portion of the unnumbered tip portion of the fixed cylinder 2 is a stopper for the rotor 11. On the other hand, the retaining piece 7 functions as a stopper for the thumb-turn shaft 45. In addition, the code | symbol 8 of FIG. 4 is the through-hole for fixing tools which is not shown in figure.

(3) Rotor 11
The rotor 11 (67) is rotatably provided in the fixed cylinder 2, and rotates together with the knob member 41 (knob 41) and the thumb turn shaft 45 (core shaft 35). The rotor 11 rotates integrally with the knob member 41 when the knob member 41 is rotated in a predetermined direction while pressing the operation input unit 38 with a finger, and the thumb turn shaft 45 rotates together with the rotor 11.

  On the other hand, although it is not a limiting requirement of the present invention, the rotor 11 cooperates with the thumb turn shaft 45 when the operation member (for example, dharma) on the lock box side is rotated by the operation shaft of the cylinder lock, for example. The knob 41 rotates through the rotor 11 when the thumb turn shaft 45 rotates.

  FIG. 5 is a perspective view of the rotor 11. Referring to FIG. 5, the rotor 11 includes a cylindrical portion 12 that is rotatably mounted on the fixed cylinder 2, a pair of connecting arms 13 that extend from the tip of the cylindrical portion to the inside of the knob member 41, and A pair of left and right projecting pieces formed at the rear end portion of the tubular portion 12 and engaged with (contact with) the end surface of the arc-shaped first engaging portion 46 (arc-shaped projection portion) on the front portion side of the thumb turn shaft 45. And an end engaging portion 14.

  Thus, the pair of connecting arms 13 extends in the horizontal direction from the tip of the cylindrical portion 12 with a predetermined interval 15, and the swing lever 32 enters the predetermined interval 15. The connecting arm 13 has a shaft hole 16 on the cylindrical portion 12 side and a connecting hole 17 formed on the distal end side of the shaft hole 16.

  In the rotor 11 of this embodiment, a notch-shaped guide groove 18 that guides the obstacle engaging portion 36 of the swing lever 32 is formed at the rear end portion of the cylindrical portion 12. The guide groove 18 is “one” when the swing lever 32 is single (in this embodiment).

  Further, referring to FIGS. 7 and 8, various design changes are made at the rear end portion of the cylindrical portion 12 in consideration of the engagement relationship between both the swing lever 32 and the thumb turn shaft 45. .

  That is, reference numeral 19 denotes an arcuate guide portion (arc-shaped notch portion) for the thumb turn shaft formed in an arc shape between the pair of left and right end engaging portions 14, and 20 denotes a square shape in a required space from the peripheral end portion. Reference numeral 22 denotes a thumbtip-shaped support portion for the thumb-turn shaft extending to the support portion 20, and a planar receiving portion for a swing lever provided above the support portion 20. The explanation of other details is omitted.

(4) Swing lever 32
The swing lever 32 (49, 51) is “one molded product” in this embodiment. The obstacle engaging portion 36 of the swing lever 32 is disposed on the cylindrical portion 12 of the rotor 11 via the guide groove 18 so as to be engaged with and disengaged from the engaging groove 4 of the fixed cylinder 1. The side of the input part 38 connected to the part 36 is pivotally supported via a support shaft 33 on the side of the knob member so as to protrude from one surface of the knob member 41. The input unit 38 is an operation input means (manual switch) that is pressed with a finger as in the case of Patent Document 1. Note that the index finger-like swing lever 32 shown in FIG. 3 is pivotally supported in a state of being sandwiched between support shafts 33 that are pivoted on a pair of connecting arms 13 that are formed to protrude from the tip of the rotor 11.

  The configuration of the swing lever 32 will be described with reference to FIG. The rocking lever 32 is composed of an index finger-like portion and a horizontal plate portion provided on the upper surface of the rear end portion of the index finger-like portion in appearance.

  Reference numeral 34 denotes a shaft hole for a support shaft formed at the center of the index finger portion, and 36 extends in the crossing direction at the rear end portion of the index finger portion and engages / disengages with the engagement groove 4 of the fixed cylinder 2. An obstacle engaging portion (having a function of a movable obstacle), 37 is a plate provided in a step shape on the upper surface of the rear end portion of the index finger-like portion and engaged with the engaging shaft portion 47a at the front portion of the thumb turn shaft 45 A shaft-like engaging portion, and 38 is a button-like input portion provided in a step shape on the top surface of the tip of the index finger portion. As shown in FIGS. 1 and 2, the input portion 38 protrudes from a window formed on one side upper surface of the knob member 41 (41) having a predetermined shape.

  Therefore, the swing lever 32 of this embodiment is pivotally supported by the support shaft 33 on the knob member 41 side, and has the input portion 38 on the tip end side with respect to the support shaft 33, while the input portion 38 And at least one oscillating piece having both the obstacle engaging portion 36 having a function of a movable obstacle and the plate-like shaft engaging portion 37 engaging with the thumb turn shaft 45 on the rear end side provided in a row. However, this is different from the example of Patent Document 1.

(5) Energizing means The energizing means 43 (the spar spring 53) urges the swing lever 45 so that the knob member 41 is in the locked state. The biasing means 43 of the present embodiment is housed in a spring housing portion 42 formed inside the knob member 41 as shown in FIG. 2, and one end portion is an unnumbered recess formed in the distal end portion of the swing lever 32. Is supported by the spring end support portion. Therefore, in the normal state, the swing lever 32 has a spring force of the biasing means 43 so that the input portion 38 on the front end portion protrudes from the one side surface of the knob member 41, while the obstacle engaging portion on the rear end portion side. 36 protrudes from the guide groove 18 of the cylindrical portion 12 of the rotor 11 and engages with the engagement groove 4 of the fixed cylinder 2 (the knob member 41 is locked).

(6) Thumb turn shaft 45
As described above, the rotor 11 includes the cylindrical portion 12 that is rotatably mounted in the fixed cylinder 2, the connecting arm 13 that extends from the distal end portion of the cylindrical portion to the inside of the knob member 41, and the cylindrical portion 12. And at least one end engaging portion 14, 19, 20 that engages with the engaging portion on the front side of the thumb turn shaft 45.

  Therefore, the circular front portion (front engagement wall) of the thumb turn shaft 45 of the present embodiment corresponds to the shape of the end engagement portions 14, 19, 20 of the rotor 11. Has a part. Here, with reference to FIGS. 6 to 8, a plurality of engaging portions or engaged portions formed to protrude from the front engaging wall of the thumb turn shaft 45 will be described.

  Reference numeral 46 denotes a total of two arc-shaped first engaging portions (arc-shaped projection portions) formed in a state of being opposed to the front end side peripheral surface of the thumb turn shaft 45. The left and right end surfaces of these arc-shaped first engaging portions 46 are For example, when the thumb turn shaft 45 is rotated in either the left or right direction by operating the cylinder lock, it hits one of the pair of left and right protruding piece end engaging portions 14 of the rotor 11. On the other hand, when the knob member is operated, the pair of left and right protruding piece end engaging portions 14 of the rotor 11 hit one of the end surfaces of the arcuate first engaging portion 46 of the thumb turn shaft 45 (FIGS. 7 and 8). See). At this time, the arcuate first engaging portion 46 of the thumb turn shaft 45 is guided to the arcuate guide portion 19 between the left and right end engaging portions 14 of the rotor 11.

  Reference numeral 47 denotes a second engaging portion projecting from a central portion on the front side of the thumb turn shaft 45. The second engaging portion 47 is a plate-like shaft engaging member of the swing lever 32 in this embodiment. A plate-like engagement shaft portion 47 a that engages with the joint portion 37, and a slope of the half-arc-shaped support portion 20 of the rotor 11 that is connected to one side surface of the plate-like engagement shaft portion 47 a in a semicircular shape. And a slidable contact portion 47b supported by the end face. Note that an input / output shaft portion 48 having engaging teeth on the outer periphery is formed on the rear side, which is continuous with the front portion of the thumb turn shaft 45, as in Patent Document 1.

(7) Picking member 41, centering spring, and the like The specific configurations of the picking member 41, the centering spring, and the like are not specific requirements of the present invention and will not be described in detail. A centering spring (not shown) is fitted into a circumferential groove formed in the front portion of the thumb turn shaft in order to achieve the other objects of the invention.

(8) Action When the input portion 38 of the swing lever 32 is pressed with a finger, the swing lever 32 rotates (swings) about the support shaft 33 while resisting the spring force of the urging means 43. Then, since the obstacle engaging portion 36 of the swing lever 32 comes out of the engaging groove 4 of the fixed cylinder 2, the locked state with respect to the knob member 41 is released, and the operator presses the input portion 38 while pressing the knob member 41. Can be turned in a predetermined direction.

  Therefore, when the knob member 41 is rotated in a predetermined direction, the rotor 11 (67) integrally connected to the knob member 41 is rotatably provided in the fixed cylinder 2, so that the rotor 11 is coupled with the knob member 41. Work and rotate in the same direction. When the rotor 11 rotates, the front engaging portion of the thumb turn shaft 45 is engaged with the end engaging portion 14 of the rotor 11, so that the rotor 11 is rotated in the same direction. Therefore, the rotor 11 is rotatably provided in the fixed cylinder 2 and rotates together with the knob member 41 (the knob 41) and the thumb turn shaft 45.

  On the other hand, when the operation member (for example, dharma) on the lock box side is rotated by the operation shaft of the cylinder lock, for example, the rotor 11 cooperates with the thumb turn shaft 45. The knob 41 rotates through the rotor 11 when the thumb turn shaft 45 rotates. FIG. 8 is an explanatory diagram for both the case where the operation is performed from the knob member 41 side and the case where the operation is performed from the cylinder lock side on the lock box side.

In this section, a second embodiment of the present invention will be described with reference to FIGS. The basic technical idea of the second embodiment and the first embodiment of the present invention is the same. Therefore, for convenience of explanation, the same components are denoted by the same or similar reference numerals, and redundant description is omitted. The main differences are listed as follows.
(A) In the second embodiment, the pivoting levers 32A and 32B having the same configuration are pivotally supported so that “two in total” are superimposed on the supporting shaft 33 on the knob member 41A side.
(B) The input portions 38 of the swing levers 32A and 32B protrude from the windows on the front surface and the back surface of the knob member 41A at the same time with one urging spring 43 interposed therebetween.
(C) The swing levers 32A and 32B are appropriately formed so that they can swing. In addition, with reference to the support shaft 33, the upper and lower input portions 38 on the distal end side are formed so as to protrude wider than the surface contact portion of the central portion so as to be positioned on the same vertical surface, The obstacle engaging portions 36 on the rear end side provided continuously with the surface contact portion extend in opposite directions to engage with the opposing engagement grooves 4 of the fixed cylinder 2A, respectively, and on the rear end side. The shaft engaging portion 27 also extends so as to sandwich a plate-like engaging shaft portion as the second engaging portion 47 of the thumb turn shaft 45A (see FIG. 12).
(D) Therefore, since the second engagement portion 47 of the thumb turn shaft 45A has two swing levers 32A and 32B, only a simple plate-like engagement shaft portion is formed, and a semicircular arc-shaped sliding contact portion. Does not exist.
(E) Therefore, a C-shaped fingertip-shaped support portion that supports the semicircular arc-shaped sliding contact portion is not formed in the rear end annular portion of the rotor 11A.

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

1 to 8 are explanatory views showing a first embodiment of the present invention. 9 to 13 show a second embodiment of the present invention.
The perspective view of 1st Example. FIG. The perspective view of a rocking lever. FIG. The perspective view of a rotor. The perspective view from the front part side of a thumb turn axis | shaft. FIG. 3 is a schematic explanatory view of a longitudinal section of an appropriate portion of the front portion of the thumb turn shaft, showing an engagement relationship between the thumb turn shaft and a rotor, an engagement relationship between the thumb turn shaft and a swing lever, and the like. Schematic explanatory drawing which shows the operation state of the main member. The perspective view which shows the external appearance structure of the principal part of 1st Example. The longitudinal cross-sectional schematic explanatory drawing similar to FIG. The cross-sectional schematic explanatory drawing similar to FIG. Schematic explanatory drawing similar to FIG. Schematic explanatory drawing similar to FIG. The schematic cross-section explanatory drawing which shows an example of the past.

DESCRIPTION OF SYMBOLS 1 ... Crime prevention thumb turn 2, 2A ... Fixed cylinder, 3 ... Storage inside, 4 ... Engagement groove | channel, 11, 11A ... Rotor, 12 ... Cylindrical part, 13 ... Connection arm, 14 ... End part engagement part, 15 ... Predetermined interval, 16: shaft hole of connecting arm, 17: connecting hole, 32, 32A, 32B ... swing lever, 33: support shaft, 34: shaft hole of swing lever, 36: obstacle engaging portion, 37: shaft Engagement part 38 ... Input part 41, 41A ... Knob member 43 ... Biasing means 45, 45A ... Thumb turn shaft 46 ... First engagement part 47 ... Second engagement part 47a ... Engagement shaft Part, 47b ... sliding contact part, 48 ... input / output shaft part.

Claims (5)

A knob member rotatably provided on the fixed cylinder, a rotor rotatable with the thumb turn shaft, a movable obstacle disposed in the fixed cylinder so as to intersect the rotor, and disengaging from the engaging groove of the fixed cylinder; A rocking lever pivotally supported via a support shaft on the knob member side so that the movable obstruction engages with the leg portion on the inner end side and the input portion on the tip end side protrudes from the surface of the knob member. In the security thumb turn provided with a biasing means for constantly biasing the movable obstacle in the engaging direction so that the movable lever is picked up, the movable obstacle and the swing lever are integrally formed. One or more oscillating levers, and the oscillating lever has at least the input portion on the tip end side with respect to the support shaft, and the movable portion on the rear end portion side connected to the input portion. forward engaging wall failure engaging portion and the thumb-turn shaft having a function of Shogaiko Security thumb turn, characterized in that it comprises a rod engaging portion engaged with the engaging portion.
2. The rotor according to claim 1, wherein the rotor includes a cylindrical portion rotatably mounted on the fixed cylinder, and a connecting arm extending from the tip of the cylindrical portion to the inside of the knob member. Security thumb turn, characterized in that the members are connected and fixed.
In Claim 1, the front engagement wall of the thumb turn shaft is provided with first and second engagement portions respectively engaged with the rear end portion of the rotor and the plate-like shaft engagement portion of the swing lever. A security thumb turn characterized by
2. The security thumb turn according to claim 1, wherein the urging means is disposed inside the knob member.
2. The front and back surfaces of the knob member according to claim 1, wherein a total of two swing levers of the same configuration are supported on the support shaft so as to overlap each other, and the input portions of these swing levers have the urging means sandwiched therebetween. Crime prevention thumb turn that protrudes from each window.

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