JP4368549B2 - Thumb turn unit and method of assembling thumb turn unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thumb turn unit mounted on an inner wall surface of a door.
[0002]
[Prior art]
Conventionally, the thumb-turn unit generally has a thumb-turn knob as a knob member, a saddle-shaped thumb-turn core that is removably inserted into a thumb-turn knob shaft hole, a fixing pin for fixing the inserted thumb-turn core to the thumb-turn knob, and a door A mounting seat fixed to the inner wall surface, a back plate fixedly mounted on the back side of the mounting seat, a stopper, a washer, and a retaining ring were added to form a total of eight articles.
[0003]
Accordingly, since the number of parts is very large, there are problems such as complicated assembly and high cost.
[0004]
[Problems to be solved by the invention]
In view of the above-described conventional problems, the first object of the present invention is to provide a component that is configured by pressing and fixing a plate-shaped thumb turn shaft to a knob member in a tight state (for example, press-fitting by a machine). It is to reduce the score. The second purpose is to engage the knob member combined with the thumb turn shaft with the mounting seat in a one-touch manner. A third object is to easily obtain an intersecting plate-like thumb turn axis. Another object is to make the mounting seat flat and tough structure.
[0005]
[Means for Solving the Problems]
The thumb turn unit of the present invention is connected to a mounting seat 1 having a fitting hole 2 and a knob portion 12 that intersects the outer wall surface of the mounting seat in a protruding state, and fits into the fitting hole. A knob member 11 having a shaft portion 13 and a plate-shaped thumb turn shaft 20 whose one end portion (outer end portion) side is press-fitted and fixed to a cross groove 17 formed in the shaft portion in the axial direction from the insertion end surface to the shaft portion. The thumb turn shaft is formed by combining two core plates in a crossing manner.
[0006]
Further, the thumb turn unit of the present invention has a plurality of engaging claws extending in the axial direction from the inner peripheral wall forming the fitting hole 2 and capable of expanding and disengaging against the elastic force of the material itself. 4 and a cap-shaped mounting seat 1, which is connected to a knob 12 that intersects the outer wall surface of the mounting seat in a protruding state, is fitted into the fitting hole, and the engaging claw piece is formed on the outer peripheral wall. A knob member 11 having a shaft portion 13 formed with an annular locking end portion 16 at an end portion projecting from the end surface of the engaging claw piece 4, and an insertion end surface at the shaft portion. The cross-shaped plate-shaped thumb turn shaft 20 whose one end (outer end) side is press-fitted and fixed to the cross groove 17 formed in the axial direction from the outer side, and prevents the plurality of engaging claw pieces from expanding outward. Engagement hole 31 having an inner peripheral wall surrounding the outer peripheral surface of these engagement claw pieces Is formed, and wherein the cyclic back plate 30 for being fitted on the back side of the mounting seat.
[0007]
The thumb turn unit assembly method of the present invention has a thumb turn shaft forming step A in which two core plates are combined in a cross shape to form a set of thumb turn shafts, and a cross groove in the axial direction from the insertion end face of the knob member. A knob member / thum turn shaft assembling step B for press-fitting and fixing the set of thumb turn shafts to the cylindrical shaft portion, and the cylindrical shaft portion of the knob member integrally combined into the fitting hole of the mounting seat. In this case, the circumferential groove formed in the cylindrical shaft portion extends from the inner peripheral wall forming the fitting hole of the mounting seat in the axial direction and can be displaced outwardly against the elastic force of the material itself. A thumb turn unit assembling method comprising a two article engaging step C of a knob member for engaging a plurality of engaging claw pieces and a mounting seat.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. With reference to FIG. 1 and FIG. 2, the members surrounding the implementation environment will be briefly described. The thumb turn unit X of the present invention is used for a lock of a type in which a locking piece (for example, a dead bolt) can be protruded and retracted from a front plate only by twisting a knob member. Therefore, 51 is a door, 52 is an inner wall surface of the door, 53 is a mounting hole for mounting the thumb turn unit X formed in the door, 54 is a plurality of fixing screws, and 55 is a rotation in which the other end of the thumb turn shaft is fitted. A connecting member such as a shaft or a cylinder (commonly referred to as “Dharma”), and 56 are horizontal support rods that engage with a split pin type engaging support portion that is formed to protrude from a mounting seat described later.
[0009]
The door mounting hole 53 can be arbitrarily formed. In addition, it is desirable to combine a linkage member or a cylinder (commonly known as “Dharma”) that is operated by the operating force of the knob member so as to press the thumb turn shaft. Hereinafter, the thumb turn unit X of the present invention will be described.
FIG. 3 is an explanatory view in which the thumb turn unit X is combined, while FIG. 4 is an exploded perspective view of the thumb turn unit X. 5 to 13 are explanatory diagrams of each member constituting the thumb turn unit X. FIG.
[0010]
An embodiment of the present invention will be described with reference to FIGS. Reference numeral 1 denotes a mounting seat that extends in the axial direction from an inner peripheral wall 3 that forms the fitting hole 2 and has a plurality of engaging claw pieces 4 that can displace outwardly against the elastic force of the material itself. . 11 to 13 show an example of the mounting seat 1. The configuration of the mounting seat 1 will be described with reference to these drawings. A slightly larger circular fitting hole 2 is formed in the central portion of the vertical wall 1a of the circular mounting seat 1.
[0011]
FIG. 11 is a front view of the mounting seat 1. On the basis of this front view, the stepped through holes 5 and 5 for the fixing screw 54 described above are formed in the left and right portions above the circular fitting hole 2, respectively. ing. On the other hand, FIG. 13 is a rear view of the mounting seat 1. On the basis of this rear view, the stepped cylindrical portions 6 and 6 for inserting the fixing screws 54 are perpendicular to the formation portions of the stepped through holes 5 and 5. It is provided so as to protrude horizontally from the inner wall surface of the wall 1a.
[0012]
Thus, in the present embodiment, the stepped cylindrical portions 6 and 6 are based on the peripheral end surface of the protruding wall-shaped peripheral wall 1b projecting in an annular shape from the peripheral end portion of the vertical wall 1a as shown in the schematic sectional explanatory view of FIG. Thus, a large-diameter portion 6a positioned closer to the vertical wall 1a by the thickness of the back plate, which will be described later, and the large-diameter portion 6a are connected to the large-diameter portion 6a and protrude in an offset state from the peripheral end surface. And a small diameter portion 6b.
[0013]
As shown in FIG. 13, a plurality of engagement claw pieces 4 are provided in total with a predetermined interval around the fitting hole 2 in this embodiment. Each slightly arcuate engaging claw piece 4 has a claw portion 4a that protrudes in the axial direction (the same direction as the stepped cylindrical portion 6) and engages with a columnar shaft portion of a knob member to be described later.
[0014]
By the way, the mounting seat 1 of the present embodiment is formed in a cap shape with a hard synthetic resin material. Usually, even if the mounting seat 1 is hard, if the fixing screw 54 is screwed in too much, an eccentric excessive pressure is applied to the vertical wall 1a, and the mounting seat 1 may be bent. Therefore, in this embodiment, the split pin type engagement support portion (the portion forming an isosceles triangle through the stepped cylindrical portions 6 and 6) below the fitting hole 2 of the vertical wall 1a (for example, a portion forming an isosceles triangle). Ii) 7 is projected and formed, and cross-shaped reinforcing ribs 8 are appropriately formed.
[0015]
Next, FIGS. 5 to 7 show a synthetic resin knob 11 that is rotatably incorporated into the fitting hole 2 of the mounting seat 1. The knob member 11 can be picked with a thumb and forefinger and intersects with the outer wall surface of the vertical wall 1a of the mounting seat 1 and an inner end surface (the mounting seat 1 of the knob 12). A cylindrical shape in which a circumferential groove 14 is formed in a central portion of an end surface facing the axial direction and is fitted in the fitting hole 2 and engages with the engagement claw piece 4 on the outer peripheral wall. And a shaft portion 13.
[0016]
Thus, 15 is a sliding contact portion having an annular flange surface 15a at the center of the inner end surface of the knob portion 12. The left and right outer wall surfaces 15b, 15b of the sliding contact portion 15 are hemispherical in appearance as shown in FIG. It has a bulging surface that makes up part of it. Reference numeral 16 denotes an annular locking end portion of the columnar shaft portion 13, and the annular locking end portion 16 moves the knob member 11 when the plurality of engaging claw pieces 4 are returned and engaged with the circumferential groove 14. The function of locking so as not to be easily removed from the mounting seat 1 is exhibited. Further, 17 is an intersecting groove formed in the axial (pick) direction from the insertion end surface of the shaft portion 13 (end surface of the annular locking end portion 16).
[0017]
Next, FIGS. 8 to 10 are explanatory views showing the thumb turn shaft 20 fixedly engaged with the shaft portion 13 of the knob member 11. In this embodiment, the thumb turn shaft 20 is a set of shaft members formed by combining two small metal plate plates 18 and 19 in a cross plate shape (cross shape on both ends). In other words, the thumb turn shaft 20 is formed as one thumb turn shaft by combining the two core plates 18 and 19 in a crossing manner from the facing direction as shown in FIG.
[0018]
FIG. 8 shows a front view of the first core plate 18. With reference to FIG. 8, the first core plate 18 is formed in a front U-shape in which the upper and lower engagement shaft portions 21 and 21 have a finger-like long appearance. Accordingly, the notch 22 formed horizontally from the central portion of the left end surface is relatively long, and is referred to as a “long engagement notch 22” here.
[0019]
Thus, a pair of small stopper protrusions 24, 24 are formed on the outer sides of the upper and lower engagement shafts 21, 21 near the right connection end 23. These protrusions 24 and 24 serve as a reference for a range in which the first core plate 18 is press-fitted (pressed) into the knob member 11.
That is, one end side (the left side in FIG. 8) of the engaging shaft portions 21 and 21 is inserted into the groove 17 of the knob member 11, while the other end portion is such as the above-described rotating shaft. This is the part that engages with the linkage member or cylinder (commonly known as “Dharma”). Therefore, tapers 25 and 25 are formed at the tip end portions of the engagement shaft portions 21 and 21 so as to facilitate press-fitting.
[0020]
On the other hand, FIG. 9 shows a front view of the second core plate 19. The length, width and thickness of the second core plate 19 are substantially the same as those of the first core plate 18. With reference to FIG. 9, the second core plate 19 has a “short engagement notch 26” in the horizontal direction at the center of the right end portion, contrary to the first core plate 18. The length of the short engagement notch portion 26 corresponds to the width dimension of the right connection end portion 23 of the first core plate 18.
Therefore, if the first core plate 18 is in a horizontal state, while the second core plate 19 is in a vertical state and the two plates are combined with each other via the engagement notches 22 and 26, FIG. As shown in Fig. 5, the united unitary unity is integrated, and a set of intersecting plate-like thumb turn shafts 20 is easily completed.
[0021]
Tapers 27 and 27 are formed so that the second core plate 19 can be easily pushed into the distal end portion on the one end side. The intersecting plate-shaped metal thumb turn shaft 20 is fixedly engaged with the intersecting groove 17 of the knob member 11 by being pushed.
[0022]
Finally, reference numeral 30 denotes an annular back plate having a circular engagement hole 31 for preventing the outward expansion displacement of the plurality of engagement claw pieces 4 and fittingly mounted on the back side of the mounting seat 1. . Since the annular back plate 30 is fitted on the back side of the mounting seat 1 as shown in FIG. 3, the first through-hole through which the small-diameter portion 6 b of the cylindrical portion 6 is inserted concentrically with the engagement hole 31. A hole 32 and a second through hole 33 through which the split pin type engagement support rod 7 is inserted are formed.
[0023]
The combination of the thumb turn unit X in the above configuration will be described. First, the first core plate 18 and the second core plate 19 are combined in a cross shape through the engagement notches 22 and 26 to make one metal thumb turn shaft 20 (see FIG. 10). Next, one end portion side of the thumb turn shaft 20 is press-fitted into the intersecting groove 17 of the knob member 11 by a press-fitting machine (not shown), and is fixedly fastened to both articles. When firmly fixed, the knob member 11 is made of a synthetic resin material, and the thumb turn shaft 20 is not easily removed by the resin pressure, so that it becomes a single article.
[0024]
Next, the knob member 11 having the thumb turn shaft 20 is rotatably attached to the attachment seat 1. In this embodiment, when the thumb turn shaft 20 is inserted into the fitting hole 2 of the mounting seat 1 while holding the knob member 11, the plurality of engaging claw pieces 4 of the mounting seat 1 are connected to the cylindrical shaft portion 13 of the knob member 11. It is pressed against the outer peripheral wall of the annular locking end portion (insertion tip portion) 16 and is once displaced outwardly against the elastic force of the material itself. When the annular locking end portion (insertion tip portion) 16 passes through the engaging claw pieces 4, the respective engaging claw pieces 4 are restored, and the claw portions 4 a are formed in the circumferential groove 14 of the cylindrical shaft portion 13. Engage.
[0025]
Therefore, the annular back plate 30 is fitted on the back side of the mounting seat 1 in a fitting manner. As described above, when the first and second through holes 32 and 33 of the annular back plate 30 are fitted to the corresponding members 6, 6 and 7 of the mounting seat 1, the engagement holes of the annular back plate 30 are fitted. The inner peripheral wall that forms 31 surrounds the outer wall surface of the engaging claw piece 4.
[0026]
Therefore, as shown in FIG. 14, the thumb turn unit assembly method of the present invention comprises a thumb turn shaft forming step A in which two core plates are combined in a crossing manner to form a set of thumb turn shafts, and an insertion end face of the knob member. A knob member / thum turn shaft assembling step B for press-fitting and fixing the set of thumb turn shafts to a cylindrical shaft portion having a crossing groove in the axial direction from the shaft, and the cylindrical shaft portion of the knob member integrally combined with the mounting seat It is inserted into the joint hole, and is extended in the axial direction from the inner peripheral wall forming the fitting hole of the mounting seat in the circumferential groove formed in the cylindrical shaft portion at the time of the fitting, and the elastic force of the material itself It consists of a two article engaging step C of a knob member and a mounting seat for engaging a plurality of engaging claw pieces which can be displaced outwardly against the above.
[0027]
【Example】
The thumb turn shaft may be composed of a single plate. In this case, the single core plate is pressed and fixed in a tight state into the minus groove or the plus groove of the knob member 11 by a press-fitting method using a machine. Further, two engaging claw pieces 4 of the knob member 11 may be provided opposite to each other. In addition, the split pin type engagement support rod 7 protrudingly formed on the vertical wall 1a of the mounting seat 1 can be arbitrarily changed in design from the viewpoint of preventing deformation of the knob member 11.
[0028]
【The invention's effect】
As is clear from the above description, the present invention has the following effects.
(1) Since the plate-shaped thumb turn shaft is pushed into and fixed to the knob member and fixed, the number of parts to be configured can be reduced. Therefore, simplification of assembly, cost reduction, etc. can be achieved.
(2) The knob member combined with the thumb turn shaft can be engaged with the mounting seat in a one-touch manner.
(3) A cross-plate-shaped thumb turn shaft can be easily obtained.
(4) Other mounting seats can be made flat and have a tough structure.
[Brief description of the drawings]
1 to 13 are explanatory views showing an embodiment of the present invention. 14 is a process diagram of the method of the present invention.
FIG. 1 is an explanatory diagram illustrating an example of an embodiment.
FIG. 2 is an explanatory view showing an example of mounting on a door from the side.
FIG. 3 is a partial schematic cross-sectional explanatory diagram.
FIG. 4 is an exploded perspective view.
FIG. 5 is a plan view of a knob member.
FIG. 6 is a front view.
FIG. 7 is a right side view.
FIG. 8 is an explanatory diagram of a first core plate.
FIG. 9 is an explanatory diagram of a second core plate.
FIG. 10 is an explanatory diagram of a set of thumb turn shafts.
FIG. 11 is a front view of a mounting seat.
FIG. 12 is a schematic cross-sectional explanatory diagram.
FIG. 13 is a rear view of the mounting seat.
FIG. 14 is a process diagram of the method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Mounting seat, 2 ... Fitting hole, 3 ... Inner peripheral wall, 4 ... Engagement claw piece, 418 ... Claw part, 5 ... Stepped through-hole, 6 ... Stepped cylindrical part, 7 ... Engagement support rod, 8 DESCRIPTION OF SYMBOLS ... Reinforcement rib, 11 ... Picking member, 12 ... Picking part, 13 ... Cylindrical shaft part, 14 ... Circumferential groove, 15 ... Sliding contact part, 16 ... Annular locking end part, 17 ... Cross groove, 20 ... Thumb turn axis, DESCRIPTION OF SYMBOLS 18 ... 1st core board, 19 ... 2nd core board, 21 ... Top and bottom engaging shaft part, 22 ... Long engagement notch part, 23 ... Right connection end part, 24 ... Stopper protrusion, 25, 27 ... Taper, 26 ... short engagement notch, 30 ... back plate, 31 ... engagement hole, 32 ... first through hole, 33 ... second through hole.

Claims (4)

  A mounting member 1 having a fitting hole 2, and a knob member that is connected to a knob portion 12 that intersects the outer wall surface of the mounting seat in a protruding state and has a shaft portion 13 that fits into the fitting hole. 11 and a plate-shaped thumb turn shaft 20 whose one end (outer end portion) is press-fitted and fixed in a tight state into a cross groove 17 formed in the axial direction from the insertion end face of the shaft portion. A thumb turn unit characterized in that it is formed by combining two core plates in a crossing manner. A cap-shaped mounting seat 1 having a plurality of engaging claw pieces 4 extending in the axial direction from the inner peripheral wall forming the fitting hole 2 and capable of being expanded and displaced against the elastic force of the material itself. The peripheral groove 14 is formed continuously with the knob portion 12 that intersects with the outer wall surface of the mounting seat and is fitted into the fitting hole, and the engaging claw piece engages with the outer peripheral wall. Further , a rotatable knob member 11 having a shaft portion 13 having an annular locking end portion 16 formed at an end portion protruding from the end surface of the engaging claw piece 4, and an axial direction from the insertion end surface to the shaft portion. The cross-shaped plate-shaped thumb turn shaft 20 whose one end (outer end) side is press-fitted and fixed to the intersecting groove 17 in a tight state so that the outward expansion displacement of the plurality of engaging claw pieces can be prevented. An engagement hole 31 having an inner peripheral wall surrounding the outer peripheral surface of the engagement claw piece is formed, and the mounting seat Thumb turn unit comprising an annular backing plate 30 for being fitted to the side. 3. The vertical wall of the mounting seat according to claim 2, wherein a stepped cylindrical portion 6 is formed on the upper side and an engaging support portion is formed on the lower side with reference to the fitting hole. Thumb turn unit.   The thumb turn shaft forming step of making a set of thumb turn shafts by combining two core plates in a crossing manner, and pressing the set of thumb turn shafts into a cylindrical shaft portion having a cross groove in the axial direction from the insertion end face of the knob member The knob member / thum turn shaft assembling step to be fixed, and the cylindrical shaft portion of the knob member integrally joined into the fitting hole of the mounting seat, and the circumferential groove formed in the cylindrical shaft portion at the time of the fitting In addition, a knob member that extends in the axial direction from the inner peripheral wall that forms the fitting hole of the mounting seat and engages a plurality of engaging claw pieces that can displace outwardly against the elastic force of the material itself. Assembly method of the thumb turn unit comprising the two article engaging step of the base and the mounting seat.

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