JP2008208589A - Door handle device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door handle device having a reduced number of parts and a simple structure. <P>SOLUTION: This door handle device is provided with a latch unit 21 having a latch 33 buried into an end face of a door 20 and energized to an engaging position protruding from the end face of the door, a handle shaft 30 protruding onto both side faces of the door while passing through the latch unit on the right and left sides, handles 32, 32 connected with both ends of the handle shaft, and braking means for the handles. The braking means is composed of a rotor 4 turning integrally with the handle shaft 30 and a damper unit 1 having a housing 2 for partitioning spaces for arranging a part around the rotor 4 together with viscous fluid and a cover member 3. The cover member 3 serves also as a handle cover for decoration arranged on the outermost side and covering an inner side invisibly. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a door handle device suitable for a door provided at an entrance / exit of a building that requires quietness among the rotary doors.

  A door handle device employed in a rotary door includes a latch unit embedded in an end surface of a door and having a latch that is biased in an engagement direction protruding from the door end surface, and penetrates the latch unit from side to side. A handle shaft that protrudes on both side surfaces of the door in a state, and a handle that is attached to both ends of the handle shaft and that retreats the latch via the handle shaft to release the engagement by rotating operation against the urging force. ing. And the latch is always urged | biased in the protrusion direction, and is engaged with the latching recessed part by the side of a door frame in the closed state of the door with respect to a door frame. In this engaged state, when the handle is turned against the urging force, the latch is retracted against the urging force to release the engagement, and the door can be turned in the opening direction. When the operator releases the handle, the handle is returned to the original initial state by the biasing force.

  In the door handle device, the urging force for returning the handle to the initial state is a considerable strength. When the operator removes the hand from the handle, the handle rotates to the original position. There is a lot of noise such as vibration. For this reason, it tends to be a problem especially in places where quietness is required for entry and exit, such as doors for entrances and exits of halls used as hospital rooms and performance venues. In the case of a grip type handle, there is no particular problem, but in the case of a lever type handle, when the hand is released, the handle instantly rotates to the original position. Doing so may cause unexpected injury.

Therefore, in order to prevent the above-described problems, as a conventional measure, as disclosed in Patent Document 1, there has been known one provided with a rotary damper for braking the movement of the handle when returning to rotation. It has been. In this structure, as shown in FIG. 7, the handles 2, 2 on both sides are connected to a latch unit (latch assembly) 10 incorporated in the door A via a handle shaft (rotary shaft) 5. Specifically, a torsion spring pressing plate 16, a torsion spring 14, a washer 15 and an escutcheon (handle cover) 7 are arranged on one side of the door A, and a rotating damper pressing plate 19 and a rotating damper 18 on the other side. An escutcheon (handle cover) 8 is arranged. In each of the above members, the screw 20 is screwed into the corresponding portion of the escutcheon (handle cover) 7 from the escutcheon (handle cover) 8 side through the rotary damper 18, the push plate 19, the door A, and the push plate 16. As a result, it is assembled between the handle 2 and the handle 2 and supported by the handle shaft 5.
JP 2002-235471 A

  However, in the door handle device described above, even if the torsion spring and the rotary damper are excluded, since the two pressing plates, the escutcheon and the washer are used, the number of members is large, and all the members are arranged on the handle shaft. Since it is screwed from one escutcheon to the corresponding part of the other escutcheon, the mounting structure is complicated. Moreover, since each member is attached to the side surface of the door, the amount of protrusion from the side surface of the door is large, which is larger than a door handle device having a normal mounting structure. Moreover, the appearance is not good because the screw is exposed on the outer surface of the escutcheon.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a door handle device that solves the above-described problems, reduces the number of parts associated with the addition of a damper unit as much as possible, and has a simple mounting structure. Another objective is to make the damper unit itself flat so that it can fit within the thickness of the door, thereby minimizing the amount of protrusion from the side of the door and simplifying the door handle. is there.

  The invention of claim 1 is captured particularly from the point of simplification by reducing the number of parts. When specified in the examples of FIGS. 1 to 5, it is embedded in the end face of the door 20 and normally protrudes from the end face of the door. A latch unit 21 having a latch 33 biased to an engagement position, a handle shaft 30 protruding from both side surfaces of the door in a state of penetrating the latch unit from side to side, and both ends of the handle shaft The door handle device includes handles 32 and 32 for retracting the latch 33 to the disengagement position via the handle shaft by a rotation operation against the urging force, and a brake means for the handle. The means includes a rotor 4 that rotates integrally with the handle shaft 30, and a housing 2 and a cover member 3 that define a space in which the periphery of the rotor is arranged together with the viscous fluid. Together consist of over unit 1, is characterized in that it also serves as a handle cover ornamental said cover member 3 is arranged on the outermost lining so as not to visually.

  The invention of claim 2 is captured especially from the point that the mounting structure is simplified. When specified in the examples of FIGS. 1 to 5, the engagement is embedded in the end surface of the door 20 and normally protrudes from the end surface of the door. A latch unit 21 having a latch 33 biased to a position, a handle shaft 30 protruding from both side surfaces of the door in a state of penetrating the latch unit to the left and right, and both ends of the handle shaft In a door handle device comprising handles 32, 32 for retracting the latch 33 to the disengagement position via the handle shaft by a rotation operation against an urging force, and a brake means for the handle, the door 20 and The latch unit 21 has through holes 26 and 24 formed on the same axis, and the braking means includes a damper unit 1 having a rotor 4 that rotates integrally with the handle shaft. And having a substantially cylindrical boss portion 13 attached to a front end surface of the damper unit facing one side surface of the door and inserted through the insertion hole, and inserting the boss portion from one side surface of the door. The damper unit 21 is fixed to the door by screwing the screw member B into the boss portion 13 through the through hole from the other side surface of the door in a state of being inserted into the hole.

  According to a third aspect of the present invention, in the second aspect, the damper unit 1 includes the rotor 4 and a housing 2 and a cover member 3 that define a space in which the periphery of the rotor 4 is arranged together with the viscous fluid. In addition, it has a stopper 6 connected to the front end surface of the housing 2 and protruding from the boss portion 13. On the other hand, the invention of claim 4 is characterized in that, in each of the above inventions, the damper unit 1 is substantially within the thickness of the door.

  According to the first aspect of the present invention, the damper unit includes the housing, the cover member, and the rotor, and the handle member for decoration (for example, the escutcheon 7 in FIG. 8), the number of parts can be reduced compared to the conventional structure to reduce the cost and handle easily, thereby expanding the application and improving the reliability.

  In the invention of claim 2, the damper unit is arranged on one side of the door (the boss is inserted into each insertion hole of the door and the latch unit), and the screw member is inserted from the other side of the door through the insertion hole. Since it can be fixed by screwing it into the cylindrical boss, it is simplified compared to the conventional structure, the mounting operation is easy, and it is excellent in detachability at the time of maintenance, thereby expanding applications and improving reliability.

  In the invention of claim 3, the boss portion can be easily attached to the damper unit via the stopper. On the other hand, in the invention of claim 3, since the damper unit does not protrude from the side surface of the door, the appearance can be simplified.

  Embodiments of the present invention will be described with reference to the drawings. 1 to 3 show a damper unit which is a main part of the door handle device, and FIGS. 4 and 5 show a door handle device in which the damper unit is incorporated in a door. In the following description, among the door handle devices, the door 20, the latch unit 21, the handles 32 and 32, and the handle shaft 30 are the same as or similar to the conventional ones. After clarifying the parts, the overall structure of the door handle device, the mounting operation, and the modification will be described in this order.

1 to 3, the damper unit 1 of the embodiment is a rotary damper, and a rotor 4 that rotates integrally with the handle shaft 30, and a space in which a peripheral part of the rotor 4 is arranged together with a viscous fluid. And a boss portion 13 protruding through a stopper 6 connected to a front end surface disposed on the door side. The handle shaft 30 is a shaft having a rectangular cross section.

  Among these, the housing 2 has a donut shape with a flat shape, and has an insertion hole 2a at the center. The insertion hole 2a is a hole having a size that allows the handle shaft 30 to be inserted with a margin. On the rear end surface of the housing 2 (lower end surface in FIG. 1), as shown in FIG. 3, the portion between the inner periphery and the outer periphery of the insertion hole 2a is made one step lower, and the end surface of the wall portion raised one step on the outer peripheral side Is provided with a seal ring circumferential groove 2b. On the front end surface of the housing 2 (upper end surface in FIG. 1), there are a stepped portion 2c extending in the radial direction including the insertion hole 2a as shown in FIG. 1, and a stepped portion 2c positioned in the stepped portion 2c. A pair of protruding left and right convex portions 2d is provided. The step 2c is set to a shape and depth corresponding to the stopper 6 side described later. A plurality of locking claws 9 are provided on the outer periphery of the housing 2, i.e., at four locations that are equally divided.

  The cover member 3 has a cap shape whose approximate shape fits the housing 2 inside, and has an insertion hole 3a at the center. The insertion hole 3a is a hole having a size that allows the handle shaft 30 to be inserted with a margin. On the peripheral wall of the cover member 3, locking holes 10 are provided at four locations corresponding to the locking claws 9, and the vertical slits 11 are formed on both sides of each locking hole 10. Yes.

  The rotor 4 includes a cylindrical portion 4a forming a central portion, a plurality of (four in this example) wing portions 4b projecting around the cylindrical portion 4a, and a front side in the cylinder of the cylindrical portion 4a (see FIG. 1) and a collar portion 5 formed with a rotation-preventing square hole 5 a through which the handle shaft 30 is inserted. The cylindrical portion 4a has such a size that a front portion (upper side in FIG. 1) is inserted through the housing side insertion hole 2a and a rear portion (lower side in FIG. 1) is inserted through the cover member side insertion hole 3a. Each wing part 4b forms a hook-like part 4c around the cylindrical part 4a and approximately halfway up and down (upper and lower in FIG. 1), and protrudes at four locations equally dividing the periphery of the hook-like part 4c.

  The stopper 6 includes a plate portion 12 having an insertion hole 12a at the center and a pair of substantially cylindrical boss portions 13 protruding from the front surface of the plate portion 12. The plate portion 12 has a shape and a plate thickness that can be accommodated in the stepped portion 2c, and has a pair of concave portions 12b provided in the straight portions on both sides. The insertion hole 12a is a hole having a size that allows the handle shaft 30 to be inserted with a margin. Each recess 12b can be engaged with a corresponding protrusion 2d on the housing side. The boss portion 13 is shorter than the thickness of the door 20 and has a female screw 13a formed on the inner periphery of the cylinder.

  In the assembly of the above members, first, the housing 2 and the cover member 3 are integrated through the engagement of the locking claw 9 and the locking hole 10. The wing portion 4b is arranged together with the viscous fluid in the inner space formed between the housing 2 and the cover member 3, and at the same time, on the outer diameter side, between the rear end surface of the housing 2 and the cover member 3. Between the seal ring 17 interposed, the front surface of the rotor side flange 4c and the corresponding portion of the housing 2 on the inner diameter side, and the rear surface of the rotor side flange 4c and the corresponding portion of the cover member 3, respectively. The seal rings 18 and 18 are arranged.

  As an example of the assembly procedure, after the rotor 4 is assembled in the housing 2, the cover member 3 is engaged and fixed to the housing 2. In the former operation, when the front portion of the cylindrical portion 12a is inserted into the housing side insertion hole 2a from the state in which the rotor 4 has the seal ring 8 disposed on the upper surface of the bowl-shaped portion 4c, the rear end surface of the housing 2 corresponds to the rotor 4 The portion is sealed through the seal ring 8 so as to be rotatable. In the latter operation, the rear portion of the cylindrical portion 12a is moved to the cover member side from the state in which the seal ring 7 is fitted in the housing-side circumferential groove 2b and the seal 4 is disposed on the lower surface of the flange 4c. When the cover member 3 and the housing 2 are strongly pressed from above and below through the insertion hole 3a, the housing 2 and the cover member 3 are integrated through the engagement of the locking claws 9 and the locking holes 10.

  In the above assembled state, a seal ring 7 is provided between the rear end surface of the housing 2 and the cover member 3, and a seal ring 8 is provided between the cover member 3 and the corresponding portion of the rotor 4 so as to be rotatable. Is done. In the assembly process described above, the rotational contact surface between the rotor 4 and the housing 2 and the rotational contact surface between the rotor 4 and the cover member 3 are filled and applied in advance with silicone oil or the like. When force is applied, slow rotation is performed. Further, the housing 2 and the cover member 3 may be integrated by, for example, welding or adhesion, in addition to being integrated by the above engagement.

(Overall Structure) Next, a door handle device using the above damper unit 1 will be described with reference to FIGS. In FIG. 4, for the sake of easy understanding, the attachment position of the handle attachment screw (holo set screw) 31 provided on the handle 32 is shown as the upper side. It is designed to be connected. This is considered to make it difficult to inadvertently disassemble due to mischief or the like and to have an excellent design appearance.

  4 and 5, the door 20 only needs to be opened and closed by rotation about a hinge such as a vertical axis member. A rectangular mounting hole 20a is opened on the end surface of the door 20 (the end surface on the swing side). A box-shaped latch unit 21 is fitted into the mounting hole 20a. From this state, in the latch unit 21, the front flange portion 21 a that protrudes and retracts the latch 33 is fixed to the corresponding portion on the door 20 side by screws 22 or the like. These are the same as before.

  Here, the latch unit 21 is partially omitted or simplified in the drawing, but the basic structure is the same as the conventional one. That is, the basic structure is that the latch 33 is slidable back and forth with respect to the latch case and can be projected and retracted from the opening of the front flange portion 21a. The latch 33 is always provided by the urging means (not shown) of the front flange portion 21a. The latch 33 is retracted to the disengagement position via the latch lever 23 (and the spring member that biases the latch lever) (not shown); The latch lever 23 has a rotation-preventing square hole 23a through which the handle shaft 30 is inserted substantially in the center, and the portions of the latch case 23 where the square hole 23a is formed are exposed on both side surfaces of the latch case. The latch lever 23 is rotated against the urging force of the spring member via the handle shaft 30 by the operation of the handle 32, and the latch 33 is disengaged from the engagement position. When the latch lever 23 is released from the handle 32, the lever 32 is reversely rotated by the urging force stored in the spring member. As a result, the handle 32 is returned to the original initial state via the handle shaft 30. In the point. For these, see JP-A-2005-299299.

  The above latch unit 21 has a pair of insertion holes 24 that are penetrated on both side surfaces of the latch case. Each insertion hole 24 is provided so as to sandwich the square hole 23a on the latch lever side and coincide with the interval between the boss portions 13 on the stopper side. The hole diameter of the insertion hole 23 is a size that allows the boss portion 13 to be inserted.

  Corresponding to the latch unit 21 described above, the door 20 has an insertion hole 27 (see FIG. 5) for fitting the damper unit 1 on one side surface of the door 20. On the side surfaces of the handle member, a handle shaft insertion hole 25 and screw member insertion holes 26 are opened on the left and right sides thereof. The insertion hole 27 is formed so as to be smaller than the plate portion 12 of the damper unit 1 and inside the boss portions 12 so that the damper unit 1 makes a surface contact between the plate portion 12 and one side of the door 20. It is arranged in the state. However, instead of this, one side surface of the door 20 may be provided with two insertion holes for inserting the boss portions 12 and one insertion hole for inserting the front side of the cylindrical portion 4a.

(Attachment operation) In the above door handle device, after the damper unit 1 is attached to the door 20 via the washer 28 and the screw member B, the handle cover 29, the handle shaft 30, and the handles 32 are assembled. A latching recess 36 for latching is provided on the side of the door frame 34 where the door 20 is disposed, corresponding to the latch 33. The latching recess 26 holds the door 20 in a closed state by the latch 33 projecting through a hole of a latch receiving bracket 35 fixed to the inner end surface of the door frame 34.

  Among these, the washer 28 is formed in a cap shape as shown in FIG. 4, and the central insertion hole 28a and the screw member insertion holes 28b on the left and right sides thereof correspond to the insertion hole 25 and the insertion hole 26, respectively. Has been. The handle cover 29 is formed in a cap shape engaged with the washer 28, and a central insertion hole 29a corresponding to the insertion hole 25 is opened. In addition, although the handle cover 29 is an example engaged with the washer 28 by a press-fitting method, the handle cover 29 may be integrated by engagement means such as unevenness or means such as adhesion.

  First, the damper unit 1 is attached to the door 20 by the following operation procedure. In the assembled state of FIG. 3, when the damper unit 1 is inserted into the corresponding insertion hole 24 of the latch unit 21 from the insertion hole 27 with respect to one side surface of the door 20, the distal end side of each boss part 13 is While entering the latch unit 21, the plate portion 12 is positioned by hitting the side surface of the door. In this state, the washer 28 is disposed on the other side surface of the door 20, and the two screw members B latch from the insertion hole 28 b of the washer 28, the insertion hole 26 of the door 20, and the insertion hole 24 of the latch unit 21. The unit 21 is screwed into the female screw 13 a of the boss 13. Thereby, the damper unit 1 is mounted on one side surface of the door 20 with high accuracy.

  Next, each handle 32 and handle cover 29 are assembled via the handle shaft 30. In this operation, the handle cover 29 is engaged with the washer 28, and the handle 32 is attached to one end side of the handle shaft 30. In this case, the handle 32 has a shaft insertion hole, and is attached by a screw (holo set screw) 31 inserted from the outer peripheral hole in a state where one end is inserted into the shaft insertion hole. From this state, the handle shaft 30 has an insertion hole 29a in the handle cover 29, an insertion hole 28a in the washer 28, an insertion hole 25 in the door 20, a square hole 23a in the latch unit 21, an insertion hole 12a in the stopper 6, and the housing on the other end side. 2 is inserted into the shaft insertion hole of the other handle 32 from the insertion hole 2a of the rotor 4, the square hole 5a of the rotor 4, and the insertion hole 3a of the cover member 3, and is mounted by screws 31 inserted from the outer peripheral holes.

  In the above handle device, when one handle 32 is grasped by hand and rotated downward from the door closed state shown in FIG. 5, the above-mentioned latch lever 23 rotates against the urging force in synchronization with the handle shaft 30. At the same time, the latch 33 is retracted into the latch unit 21 against the urging force to release the engagement with the door-side locking recess 36, and the door 2 can be operated in the opening direction. When the hand is released from the handle 32, the latch lever 23 is rotated in the opposite direction by the biasing force, and the latch 33 protrudes again by the biasing force. In this case, the handle shaft 30 rotates the latch lever 23. The handle 32 is returned to the original initial position. In this structure, the handle shaft 30 is rotated in synchronization with the rotor 4 receiving viscous resistance in the damper unit 1, that is, the handle 32 is slowly returned to the original initial position by the damper action of the damper unit 1. . As a result, the slow return operation of the handle 32 eliminates the impact and impact sound associated with the rapid return operation, and inadvertent accidents and injuries such as hitting the hand with the handle 32 due to the rapid return can occur. It can be prevented.

(Modification) FIG. 6 shows a modification corresponding to FIG. In this modification, the configuration in which the rotor 4 is formed with the collar portion 5 separately from the configuration described above and the configuration in which the damper unit 1 is on one side of the door 20 and is accommodated within the thickness of the door are changed. Has been. In the former configuration, for example, when it is desired to give rigidity to the collar portion 5, it can be easily dealt with by forming it separately from the rotor 4 and retrofitting the rotor 4. In the latter configuration, the insertion hole 27a provided on one side surface of the door 20 is formed in a hole shape corresponding to the damper unit 1, and the appearance of the damper unit 1 can be suppressed from one side surface of the door 20 to simplify the appearance. . However, in this embodiment, the cover member 3 also serves as a handle cover, and the damper unit 1 itself has a flat thickness except for the boss portion 13. In addition, the handle device including the damper unit 1 can be made compact. Further, even when the door 20 is accommodated within the thickness, it is a matter of course that an external appearance similar to that of a general door handle device can be obtained by attaching a handle cover to the outside of the door 20. As described above, the present invention only needs to include the technical elements specified in claims 1 and 2, and the details can be variously changed as necessary.

It is a disassembled perspective view of the damper unit for door handles which concerns on this invention. It is a top view which shows the same assembly state. It is the III-III sectional view taken on the line of FIG. It is an exploded view which shows the assembly structure of the door handle apparatus with the damper unit. It is a schematic cross section which expands and shows the assembly state partially. It is a schematic cross section which shows a modification corresponding to FIG. It is explanatory drawing which shows the structure disclosed by patent document 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Damper unit 2 ... Housing 3 ... Cover member 4 ... Rotor (5 is a collar part, 5a is a square hole)
13 ... Boss part (13a is an internal thread)
20 ... Door (20a is a mounting hole)
21 ... Latch unit (33 is latch)
23 ... Latch lever (23a is a square hole)
24, 26 ... insertion hole 30 ... handle shaft 32 ... handle B ... screw member

Claims (4)

A latch unit embedded in the end face of the door and having a latch normally biased to an engagement position protruding from the door end face, and protrudes on both side faces of the door in a state of penetrating the latch unit left and right. A handle shaft coupled to both ends of the handle shaft, a handle for retracting the latch to the disengagement position via the handle shaft by a rotation operation against an urging force, and a brake means for the handle In the door handle device
The braking means comprises a damper unit having a rotor that rotates integrally with the handle shaft, a housing and a cover member that define a space in which a peripheral portion of the rotor is arranged with viscous fluid, and the cover unit. A door handle device characterized in that a member is also arranged on the outermost side and serves also as a decorative handle cover that covers the inside invisible. A latch unit embedded in the end face of the door and having a latch normally biased to an engagement position protruding from the door end face, and protrudes on both side faces of the door in a state of penetrating the latch unit left and right. A handle shaft attached to both ends of the handle shaft, a handle for retracting the latch to the disengagement position via the handle shaft by a rotation operation against an urging force, and a brake means for the handle In the door handle device
The door and the latch unit have an insertion hole formed on a coaxial line,
The braking means comprises a damper unit having a rotor that rotates integrally with the handle shaft, and a substantially cylindrical boss attached to the front end surface of the damper unit facing the door and inserted through the insertion hole. Part
The damper unit is fixed to the door by screwing the screw member from the other side of the door into the boss through the insertion hole in a state where the boss is inserted into the insertion hole from one side of the door. A door handle device characterized by that.   The damper unit includes the rotor, a housing and a cover member that define a space in which the peripheral portion of the rotor is arranged together with the viscous fluid, and is connected to a front end surface of the housing to protrude the boss portion. The door handle device according to claim 2, further comprising a stopper. The door handle device according to any one of claims 1 to 3, wherein the damper unit is substantially within the thickness of the door.

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