Door handle device

Abstract

The fastening mechanism can be secured simply by joining the inner and outer mounting plates so that they sandwich the door and door lock. [Solution] A door lock 2 having a latch bolt 2a is embedded in the door D, an inner plate 11 and an outer plate 12 are fitted to the inner and outer surfaces of the door D and connected via a fastening means 10, a spindle 3 for moving the latch bolt 2a forward and backward passes through the door lock 2, and an inner handle H1 and an outer handle H2 are attached to both ends of the spindle 3. The fastening means 10 has a pair of outer studs SU protruding from one opposing surface of the inner plate 11 and the outer plate 12, and a pair of inner studs SN protruding from the other opposing surface of the inner plate 11 and the outer plate 12, the opposing inner surfaces of the pair of outer studs SU and the outer surfaces of the pair of inner studs SN are in elastic contact, and the pair of inner studs SU sandwich the pair of inner studs SN.

Description

[Technical Field]

[0001] The present invention relates to a door handle device in which an inner seat plate and an outer seat plate are combined and arranged on the inner and outer surfaces of a door. [Background Art]

[0002] In the door handle device disclosed in Patent Document 1, a door lock having a latch bolt is embedded in a door, an inner seat plate and an outer seat plate are respectively placed against the inner surface on the indoor side and the outer surface on the outdoor side of the door and connected via fastening means, a core rod for advancing and retracting the latch bolt passes through the door lock, and an inner handle and an outer handle are attached to both ends of the core rod.

[0003] The fastening means includes a pair of studs protruding from the opposing surface of the outer seat plate and a pair of studs protruding from the opposing surface of the inner seat plate; the studs of the outer seat plate are cylindrical with an insertion hole inside, through which a connecting screw is inserted, and the studs of the inner seat plate are screw cylinders internally threaded with female threads, into which the connecting screw is screwed.

[0004] In the above conventional door handle device, after the door lock is placed in the door, the opposing surface of the outer seat plate is pressed against the door while inserting the studs of the outer seat plate into the door lock from the outer side of the door, the opposing surface of the inner seat plate is pressed against the door while inserting the studs of the inner seat plate into the door lock from the inner side of the door, the connecting screw is inserted into the insertion hole of the stud of the outer seat plate, the tip end of the connecting screw is screwed into the screw cylinder of the stud of the inner seat plate, and by tightening the connecting screw, the door, the door lock, the outer seat plate and the inner seat plate are integrated, and this integration is configured to rotatably support the core rod penetrating the door lock and the inner and outer handles attached to both ends of the core rod. [Prior Art Documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent No. 7426747 [Summary of the Invention] [Problem to be Solved by the Invention]

[0006] The aforementioned conventional technology allows for a firm joint between the outer and inner seat plates by tightening two connecting screws, but it involves a large number of parts and the fastening process is cumbersome.

[0007] The present invention aims to provide a door handle device that can solve the problems of the prior art described above.

[0008] The present invention aims to provide a door handle device that allows for fastening of the fastening means simply by pressing the studs of the outer and inner plates together so as to sandwich the door lock, thereby reducing the number of parts and enabling easy fastening. [Means for solving the problem]

[0009] A specific means for solving the problems in the present invention is a door handle device in which a door lock 2 having a latch bolt 2a is embedded in a door D, an inner plate 11 and an outer plate 12 are fitted to the inner and outer surfaces of the door D and connected via fastening means 10, a spindle 3 for moving the latch bolt 2a forward and backward passes through the door lock 2, and an inner handle H1 and an outer handle H2 are attached to both ends of the spindle 3, The fastening means 10 has a pair of outer studs SU protruding from one opposing surface of the inner seat plate 11 and the outer seat plate 12, and a pair of inner studs SN protruding from the other opposing surface of the inner seat plate 11 and the outer seat plate 12, with the opposing inner surfaces of the pair of outer studs SU and the outer surfaces of the pair of inner studs SN elastically in contact, and the pair of inner studs SU sandwiching the pair of inner studs SN. [Effects of the Invention]

[0010] According to the present invention, the inner stud SN and outer stud SU of the fastening means 10 can be fastened by simply joining the inner plate 11 and the outer plate 12 so as to sandwich the door D and the door lock 2. [Brief explanation of the drawing]

[0011] [Figure 1] This is a cross-sectional plan view showing an embodiment of the present invention. [Figure 2] This is a perspective view of the same disassembled state. [Figure 3] This is a perspective view of the inner and outer seat plates. [Figure 4] These are plan views of the inner and outer seat plates. [Figure 5] This is a front view of the inner and outer seat plates. [Figure 6] This is a cross-sectional plan view of the inner and outer seat plates. [Figure 7] This is a view of the inner and outer seat plates from opposite sides. [Modes for carrying out the invention]

[0012] Hereinafter, embodiments of the present invention will be described based on the drawings.

[0013] Figures 1 to 7 show the door handle device 1 of the present invention.

[0014] Door D has a door lock 2 embedded in it, which has a latch bolt 2a. A spindle 3 that extends and retracts the latch bolt 2a passes through the door lock 2, and handles for rotating this spindle 3 are located on both sides of door D. An outer handle H2 is fixed to one end of the spindle 3 and is an out-handle located on the exterior side, while an inner handle H1 is detachably fixed to the other end of the spindle 3 and is an in-handle located on the interior side.

[0015] As shown in Figure 1, the core rod 3 is formed by overlapping two rectangular cross-section plates to create a square core shaft with a roughly square cross-section and a slotted groove 16 in the center. One end of the core rod 3 is inserted into the boss portion 22 of the outer handle H2 and secured via a retaining pin 17.

[0016] On the outer surface of the door D on the side of the outer handle H2, an outer base plate 12 is fixed to the door D. Sometimes a base plate cover is placed over this outer base plate 12, but the cover portion 23 of the outer handle H2 surrounds the outer base plate 12.

[0017] A boss portion 24 of the inner handle H1 is fitted and mounted to the other end of the core rod 3. A wedge portion 18 that is inserted from an end into a slotted groove 16 of the core rod 3 is formed at the inner depth of a fitting hole h of the inner handle H1. When the wedge portion 18 is inserted into the slotted groove 16, the two-layer square core shaft is expanded, so that the inner handle H1 is prevented from coming off.

[0018] An inner seat plate 11 is placed against and fixed to an inner surface of the door D on the inner handle H1 side, and a seat plate cover covering the inner seat plate 11 may be arranged in some cases, wherein a cover portion 25 of the inner handle H1 surrounds the inner seat plate 11.

[0019] The inner seat plate 11 is in an oval shape elongated in the left-right direction when viewed from the side, and a pair of outer studs SU constituting the fastening means 10 are protrudingly provided on a facing surface in contact with the door D.

[0020] The outer seat plate 12 is in an oval shape elongated in the left-right direction when viewed from the side, and a pair of inner studs SN constituting the fastening means 10 are protrudingly provided on a facing surface in contact with the door D.

[0021] It should be noted that a pair of inner studs SN may be provided on the inner seat plate 11, and a pair of outer studs SU may be provided on the outer seat plate 12, as long as they are in a positional relationship where they elastically contact each other within the door lock 2 inserted and arranged.

[0022] The fastening means 10 is composed of a pair of inner studs SN of the outer seat plate 12 and a pair of outer studs SU of the inner seat plate 11, wherein the pair of inner studs SN can be clamped by the pair of outer studs SU. Opposing inner surfaces of the pair of outer studs SU and outer surfaces of the pair of inner studs SN elastically abut against each other, and the frictional resistance thereof prevents coming off, serving as a force for clamping the door D and the door lock 2 and combining the inner seat plate 11 and the outer seat plate 12.

[0023] The distance L1 between the outer surfaces of the pair of inner studs SN is set to be greater than the distance L2 between the opposing inner surfaces of the pair of outer studs SU at their tip ends. The inner studs SN and outer studs SU elastically deform when they come into contact, and their restoring force causes them to elastically abut each other. Both or just one of them may deform elastically, but the stud insertion holes formed in the door lock 2 restrain one of them from deforming too much.

[0024] The contact between the inner stud SN and the outer stud SU ensures that they do not come loose through elastic pressure. However, from the perspective of preventing them from coming loose, it is also possible to increase frictional resistance by making the opposing inner surface of the outer stud SU and the outer surface of the inner stud SN rough or by creating irregularities.

[0025] In this invention, in addition to the frictional resistance and elastic force mentioned above, a pulling force is generated to prevent the device from coming loose.

[0026] In Figures 1-7, the outer surfaces of a pair of inner studs SN have protrusions Na that can slide while elastically contacting the opposing inner surface of the outer stud SU, and the opposing inner surfaces of the pair of outer studs SU have inclined surfaces Ua that gradually widen from the tip to the base and pull the protrusions Na on the outer surface of the inner stud SN toward the base of the outer stud SU.

[0027] The elastic contact between the projection Na and the inclined surface Ua generates a force that pulls the projection Na toward the base side of the outer stud SU, and when the pressure on the inner seat plate 11 and outer seat plate 12 against the door D is released, the pressure is restored and the inner seat plate 11 and outer seat plate 12 are attracted to each other.

[0028] Furthermore, the projection Na of the inner stud SN has a guide recess Nb in the center, and the inclined surface Ua of the outer stud SU has a guide projection Ub that engages with the guide recess Nb to guide the stud Ua to slide in the inclined direction.

[0029] The engagement between this guide recess Nb and the guide projection Ub allows the projection Na of the inner stud SN and the inclined surface Ua of the outer stud SU to contact each other in a directly aligned position without lateral displacement, and enables sliding contact.

[0030] The aforementioned protrusion Na and the inclined surface Ua can also be positioned on opposite studs.

[0031] Specifically, the opposing inner surfaces of a pair of outer studs SU are formed with protrusions Na that can slide while elastically contacting the outer surfaces of a pair of inner studs SN, and the outer surfaces of the pair of inner studs SN are formed with inclined surfaces Ua that gradually narrow from the tip side to the base side, drawing the protrusions Na on the opposing inner surfaces of the outer studs SU toward the base side of the inner studs SN.

[0032] In the projection Na of the outer stud SU, a guide recess Nb can be formed in the center, and in the inclined surface Ua of the inner stud SN, a guide ridge Ub can be formed that engages with the guide recess Nb to guide the inclined surface Ua to slide in the inclined direction.

[0033] The aforementioned door handle device 1 has a door lock 2 having a latch bolt 2a embedded in the door D, an inner plate 11 and an outer plate 12 are fitted to the inner and outer surfaces of the door D and connected via fastening means 10, a spindle 3 that moves the latch bolt 2a forward and backward passes through the door lock 2, and an inner handle H1 and an outer handle H2 are attached to both ends of the spindle 3. The fastening means 10 has a pair of outer studs SU protruding from one opposing surface of the inner plate 11 and the outer plate 12, and a pair of inner studs SN protruding from the other opposing surface of the inner plate 11 and the outer plate 12. The opposing inner surfaces of the pair of outer studs SU and the outer surfaces of the pair of inner studs SN are in elastic contact, and the pair of outer studs SU sandwich the pair of inner studs SN, and the distance L1 between the outer surfaces of the pair of inner studs SN is set to be greater than the distance L2 between the opposing inner surfaces of the outer studs at the tip side of the pair of outer studs SU. On the outer surfaces of a pair of inner studs SN, protrusions Na are formed that can slide while elastically contacting the opposing inner surface of an outer stud SU. On the opposing inner surfaces of the pair of outer studs SU, inclined surfaces Ua are formed, with a gap that gradually widens from the tip side to the base side, drawing the protrusions Na on the outer surface of the inner stud SN toward the base side of the outer stud SU. Guide recesses Nb are formed on the protrusions Na of the inner stud SN, and guide ridges Ub are formed on the inclined surface Ua of the outer stud SU that engage with the guide recesses Nb to guide the sliding of the inclined surface Ua in the inclined direction.

[0034] With this configuration, as the door handle device 1 combines the inner platen 11 and the outer platen 12 with the door D and door lock 2 in between, the guide recess Nb of the projection Na of the inner stud SN is guided by the guide ridge Ub of the inclined surface Ua of the outer stud SU, and the projection Na slides while elastically pressing against the inclined surface Ua, causing the inner stud SN and the outer stud SU to engage and combine the inner platen 11 and the outer platen 12. During and after this combining process, the projection Na receives not only frictional resistance and elastic pressure from the inclined surface Ua, but also a force that pulls the inner platen 11 towards the outer platen 12, thus preventing detachment and loosening, and reliably preventing the combined parts from being separated.

[0035] Furthermore, as the door handle device 1 combines the inner seat plate 11 and the outer seat plate 12 with the door D and door lock 2 in between, the guide recess Nb of the projection Na of the outer stud SU is guided by the guide ridge Ub of the inclined surface Ua of the inner stud SN, and the projection Na slides toward the inner stud SN while elastically pressing against the inclined surface Ua, causing the inner stud SN and the outer stud SU to engage and combine the inner seat plate 11 and the outer seat plate 12. In addition to frictional resistance and elastic pressure from the inclined surface Ua, the projection Na also receives a force that pulls the inner seat plate 11 toward the outer seat plate 12.

[0036] In conventional door handle devices, the structure in which two connecting screws are tightened to join the outer and inner plates can result in excessive tightening, causing damage to components or distortion of the door, or conversely, insufficient tightening, depending on the skill of the fastener and the use of power tools, thus requiring a certain level of skill to install. However, as described above, the door handle device 1 of the present invention engages the inner stud SN and the outer stud SU, and also generates a force that pulls the inner plate 11 towards the outer plate 12. Therefore, no tools are required, and installation skill is irrelevant, allowing anyone to install it properly. Moreover, even if there are differences or errors in the thickness of the door, or if a wooden door shrinks, the inner plate 11 and the outer plate 12 can be securely and robustly fastened.

[0037] It should be noted that the present invention is not limited to the embodiments described above, and the shape, configuration, and combination of the components can also be changed.

[0038] For example, the inclined surface Ua may be formed in a stepped or sawtooth shape instead of a smooth surface.

[0039] A detachable mechanism may be provided between the inner handle H1 and the core rod 3. [Explanation of Symbols]

[0040] 1. Door handle device 2 Door Locks 2a Latch bolt 3 core rod 10 Fastening means 11 Inner seat board 12 Outside seat board 16 Slit grooves 17 pins 18 Wedge 22 Boss Section 23 Cover section 24 Boss Section 25 Cover section D Door H1 Interior Handle H2 External Handle L1 Inner stud outer surface spacing L2 Outer stud opposing inner surface spacing Na protrusion Nb guide recess SN internal stud SU external stud Ua Inclined surface Ub guide protrusion h Fitting hole

Claims

1. A door handle device comprising a door lock (2) having a latch bolt (2a) embedded in a door (D), an inner plate (11) and an outer plate (12) fitted to the inner and outer surfaces of the door (D) and connected via fastening means (10), a spindle (3) that moves the latch bolt (2a) forward and backward passing through the door lock (2), and an inner handle (H1) and an outer handle (H2) attached to both ends of the spindle (3), The fastening means (10) has a pair of outer studs (SU) protruding from one opposing surface of the inner seat plate (11) and the outer seat plate (12), and a pair of inner studs (SN) protruding from the other opposing surface of the inner seat plate (11) and the outer seat plate (12), wherein the opposing inner surfaces of the pair of outer studs (SU) and the outer surfaces of the pair of inner studs (SN) are in elastic contact, and the pair of inner studs (SN) are sandwiched between the pair of outer studs (SU).

2. The door handle device according to claim 1, characterized in that the distance between the outer surfaces (L1) of the pair of inner studs (SN) is set to be greater than the distance between the opposing inner surfaces (L2) of the outer studs on the tip side of the pair of outer studs (SU).

3. On the outer surface of the pair of inner studs (SN), protrusions (Na) are formed that are able to slide while elastically contacting the opposing inner surface of the outer stud (SU). The door handle device according to claim 1, characterized in that the opposing inner surfaces of the pair of outer studs (SU) have inclined surfaces (Ua) formed thereon, which gradually widen from the tip side to the base side, and pull the projection (Na) on the outer surface of the inner stud (SN) toward the base side of the outer stud (SU).

4. On the opposing inner surfaces of the pair of outer studs (SU), protrusions (Na) are formed that are slidable while elastically contacting the outer surface of the pair of inner studs (SN). The door handle device according to claim 1, characterized in that the outer surfaces of the pair of inner studs (SN) have inclined surfaces (Ua) formed thereon, which gradually narrow from the tip side to the base side, and which pull the projection (Na) on the opposing inner surface of the outer stud (SU) toward the base side of the inner stud (SN).

5. The door handle device according to claim 3 or 4, characterized in that a guide recess (Nb) is formed on the projection (Na), and a guide ridge (Ub) is formed on the inclined surface (Ua) that engages with the guide recess (Nb) to guide the inclined surface (Ua) to slide in the inclined direction.

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