JP2009281000A - Lever handle device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lever handle device which can be easily assembled, which can make a component for housing a helical compression spring protrude as slightly as possible in the width direction of a door, and which surely returns a lever handle to a return position by an elastic force of the helical compression spring. <P>SOLUTION: This lever handle device includes: the pair of lever handles 5 for operating a latch 33; a rotating shaft 7 which is inserted through the door so as to connect the lever handles together; the helical compression spring 18 for returning the lever handle, turned on the rotating shaft, to the return position; bases 8 which are mounted on both the sides of the door, respectively, and which allow the insertion of the rotating shaft; and a spring retainer member 12 which is turnably attached to the base in such a manner as to be turned on the rotating shaft. The helical compression spring is housed in the base along the turning direction of the spring retainer member. One end of the helical compression spring abuts on the spring retainer member, and the other end thereof abuts on the base, so that the helical compression spring can urge the lever handle to the return position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lever handle device attached to a door of a building, for example.

  Conventionally, a lever handle device is installed at a door provided at, for example, a building entrance. The lever handle device includes a pair of lever handles for operating a latch of a latch assembly mounted in the door, a rotary shaft inserted into the door so as to connect the lever handles, and the rotary shaft. Return means for returning a lever handle that rotates about the center to a predetermined position. And the return means is comprised from the cyclic | annular torsion spring inserted in the rotating shaft (for example, refer patent document 1).

  A casing is attached to the door surface, and the torsion spring and a washer connected to one end of the torsion spring are accommodated in the casing. The other end of the torsion spring is connected to the inner surface of the casing 7.

  Then, the operator rotates the lever handle around the rotation axis against the urging force of the torsion spring. If it does so, a latch will immerse in the inside of a door, engagement with the latch of the said door and the latching hole of a door frame will be cancelled | released, and the said door will open.

When the operator releases the hand that has rotated the lever handle, the lever handle returns to the original substantially horizontal position (return position) by the biasing force of the torsion spring, and the latch protrudes from the door end surface.
JP 2002-235471 A

  Since the lever handle has a structure in which one end side is connected to the rotating shaft, when the weight of the lever handle becomes large or the lever handle becomes long, in order to return the other end side substantially horizontally. A sufficient elastic force is required for the torsion spring.

  Since the conventional lever handle device has a configuration in which an annular torsion spring is inserted through the rotation shaft, in order to ensure sufficient elastic force to return the lever handle, the torsion spring is moved in a direction along the rotation shaft. It is possible to make it longer. When the torsion spring is lengthened in the direction along the axis of the rotation shaft in this way, the torsion spring and the casing that accommodates the torsion spring may protrude from the side surface of the door inadvertently.

  In addition, since the torsion spring is configured to connect the end portions of the torsion spring so as not to be detached from the casing and the washer, there is a problem that the assembling work becomes complicated.

  The present invention has been made to solve the above-mentioned problems, and can be easily assembled, and the parts accommodating the compression coil springs can be made as small as possible to protrude on both side surfaces (width direction) of the door. Moreover, it is an object to reliably return the lever handle to the return position by the elastic force of the compression coil spring.

  In the present invention, a pair of lever handles for operating the latch, a rotating shaft inserted into the door so as to connect the lever handles, and a lever handle rotating around the rotating shaft at the return position. A compression coil spring to be returned; a base attached to both side surfaces of the door and through which the rotary shaft is inserted; and a spring receiving member rotatably attached to the base so as to rotate around the rotary shaft. And the compression coil spring is accommodated in the base so as to follow a rotation direction of a spring receiving member, one end of the compression coil spring abuts on the spring receiving member, and the other end is in the base. By contacting, the compression coil spring urges the lever handle to the return position.

  According to the present invention, since the compression coil spring is accommodated in the base so as to follow the rotation direction of the spring receiving member, it is possible to prevent a part accommodating the compression coil spring from inadvertently protruding from the side of the door.

  In addition, the compression coil spring abuts on the spring receiving member and the base, contracts by the turning operation of the lever handle, and then expands by an elastic force. As a result, the compression coil spring can reliably return the lever handle to the predetermined return position by rotating the spring receiving member.

  Also, since one end of the compression coil spring is in contact with the spring receiving member and the other end is in contact with the base, there is no need to connect the end of the compression coil spring to each component, and the compression coil spring The spring can be easily assembled.

  Further, in the lever handle device, a storage recess is formed in the base, a part of the spring receiving member is stored in the storage recess, and a part of the spring receiving member and an inner surface of the storage recess A spring accommodating space is formed therebetween, and the compression coil spring is accommodated in the spring accommodating space.

  According to the present invention, it is possible to reduce as much as possible that a component accommodating the compression coil spring protrudes in the door width direction, and the lever handle can be reliably returned to a predetermined return position by the compression coil spring. Further, there is an advantage that the compression coil spring can be easily and quickly assembled.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 9 show a lever handle device according to an embodiment of the present invention.

  1 is an exploded perspective view showing the lever handle device 1 of the embodiment, FIG. 2 is a sectional plan view of the lever handle device, and FIG. 3 is a sectional front view of the lever handle device. In FIG. 1, 2 is a hinged door that swings in the horizontal direction indicated by an arrow around a hinge as a door of a building. In addition, the hinged door 2 has shown the free end side which attaches the lever handle apparatus 1 of this Embodiment.

  An accommodation opening 2a is provided on the end surface on the free end side of the hinged door 2, and the latch assembly 3 is accommodated in the accommodation opening 2a. The latch assembly 3 is rotatably provided with a hub 32 having a non-circular (in this embodiment, a substantially square shape) rotation shaft insertion hole 31. By rotating the hub 32, the protruding latch 33 can be retracted.

  The latch 33 is urged in a protruding direction by a spring (not shown) housed in the latch assembly 3. As the latch assembly 3, a conventionally known one can be adopted, and a specific description thereof will be omitted.

  A through hole 4 is formed in the hinged door 2 so as to penetrate the front side and the back side. The through hole 4 is formed at a position corresponding to the rotation shaft insertion hole 31 of the latch assembly 3 attached to the hinged door 2, and the lever handle device 1 is provided at this formation position.

  The lever handle device 1 includes lever handles 5 and 6 disposed on both front and back sides of the hinged door 2, a rotary shaft 7 having a substantially square cross section connecting the lever handles 5 and 6, and the hinged door 2. A pair of bases 8 and 9 that are attached to both side surfaces, casings 10 and 11 that are externally fitted to the bases 8 and 9, spring receiving members 12 and 13, covers 15 and 16, and compression coil springs 18 and 19. And.

  The casings 10 and 11 have a cylindrical shape in which through holes 10a and 11a are respectively provided in the approximate center of one end surface. The other end surfaces of the casings 10 and 11 are opened.

  As shown in FIGS. 6 and 7, the bases 8 and 9 have a substantially disk shape and are provided with cylindrical boss portions 8 a and 9 a having a circular opening at the center. The casings 10 and 11 are fitted on the outer peripheral surfaces of the bases 8 and 9, respectively. A pair of storage recesses 17 and 17 are formed on the inner side surfaces of the bases 8 and 9 (the side of the hinged door 2). The storage recesses 17 and 17 are formed in a substantially fan shape with the bosses 8a and 9a as the center.

  A pair of connecting rods 20, 20 are projected by screws 22 a on the base 8 attached to the front surface of the hinged door, and the connecting rods 20, 20 are inserted into insertion holes 21, 21 formed in the hinged door 2, and The base 9 on the back side of the hinged door is fastened and fixed with screws 22b. Thus, the base 8 and the base 9 are fixed to the hinged door 2 so as to sandwich the hinged door 2.

  The spring receiving members 12 and 13 are different from each other, FIG. 4 shows a state in which the spring receiving member 12 is attached to the base 8 attached to the front surface of the hinged door, and FIG. The state which attached the spring receiving member 13 is shown. 8 and 9 illustrate the spring receiving member 12 on one side (front side of the hinged door).

  The spring receiving members 12 and 13 include cylindrical boss portions 12a and 13a, a pair of guide portions 12b and 13b provided on the outer periphery of the boss portions 12a and 13a, and receiving seats 12c and 13c. The guide portions 12b and 13b and the seats 12c and 13c are housed in the housing recesses 17 of the bases 8 and 9.

  At the center of the boss portions 12a and 13a, a square-shaped opening 14 through which the rotary shaft 7 is inserted so as not to be relatively rotatable is provided. It is fitted in so that it can rotate freely.

  The guide portions 12b and 13b have a fan shape, and the outer peripheral surfaces of the guide portions 12b and 13b are formed as arcuate surfaces, and the diameter thereof is set smaller than the inner peripheral diameter of the storage recess 17 of the base. Yes. A spring accommodating space S is formed along the inner peripheral surface 17a of the storage recess 17 between the outer peripheral surfaces of the guide portions 12b and 13b and the inner peripheral surface 17a of the storage recess 17 of the bases 8 and 9, respectively. ing.

  The length of the guide portions 12b and 13b in the circumferential direction (the rotation direction of the spring receiving members 12 and 13) is set to approximately half of the length in the circumferential direction of the storage recess 17. Accordingly, the guide portions 12b and 13b can rotate in the storage recess 17, and the rotation range of the guide portions 12b and 13b determines the rotation angle of the lever handles 5 and 6.

  Receiving seats 12c and 13c project from the guide portions 12b and 13b in the radially outward direction at one ends of the guide portions 12b and 13b, respectively. The compression coil spring 18 is housed in the spring housing space S. One end of the compression coil spring 18 abuts on the seats 12 c and 13 c, and the other end abuts on the one end surface 17 b of the housing recess 17.

  Then, the compression coil springs 18 and 19 bring the seats 12c and 13c into contact with the other end surface 17c of the storage recess 17 by the elastic force in the extending direction, and the lever handles 5 and 6 maintain a predetermined position (FIG. 4). (See (a) and FIG. 5 (a)). Thus, at the position (return position) A where the receiving seats 12c, 13c abut against the other end surface 17c of the storage recess 17, the lever handles 5, 6 are in a horizontal state.

  When the lever handles 5 and 6 are rotated downward from the return position, the other ends of the guide portions 12b and 13b (the side where the seats 12c and 13c are not provided) abut against the one end surface 17b of the storage recess 17. (Refer to FIG. 4B and FIG. 5B). This position is referred to as an open position B. That is, the lever handles 5 and 6 are rotatable between the return position A and the open position B.

  The compression coil springs 18 and 19 are housed in the spring housing space S in a curved state. That is, the outer peripheral surfaces of the guide portions 12b and 13b are convex surfaces, and the outer peripheral surfaces maintain the compression coil springs 18 and 19 in a curved state.

  The covers 15 and 16 are formed with openings 15a and 16a that are fitted into the bosses 8a and 9a of the bases 8 and 9 from the inside, and the covers 15 and 16 include inner housing recesses 17 of the bases 8 and 9. The side is blocked.

  The lever handle device 1 of the present embodiment operates as follows. When the hinged door 2 provided with the lever handle device 1 is closed, the latch 33 protruding from the end surface of the hinged door 2 is engaged with a hook hole of a door frame (not shown). The lever handles 5 and 6 are at the return position A (see FIGS. 4A and 5A).

  An operator rotates the lever handles 5 and 6 facing the substantially horizontal direction on the front side or the back side of the hinged door 2 downward. Then, since the rotating shaft 5 connected to the lever handles 5 and 6 rotates the hub 32 of the latch assembly 3, the rotation of the hub 32 causes the latch 33 that has been engaged with the hook hole of the door frame to be opened. Immerse yourself in 2. As a result, the latch 33 is disengaged from the door hole of the door frame, and the hinged door 2 can be opened.

  Further, when the lever handles 5 and 6 are rotated downward, the rotary shaft 5 also rotates the spring receiving members 12 and 13 (see FIGS. 4B and 5B). That is, the seats 12c and 13c of the spring receiving members 12 and 13 compress the compression coil springs 18 and 19 against the elastic force. The compression coil springs 18 and 19 are gradually compressed as the lever handles 5 and 6 are rotated. As described above, the guide portions 12b and 13b bend the compression coil springs 18 and 19, respectively. Therefore, the compression coil springs 18 and 19 contract in a curved state.

  When the hinged door 2 opens, the operator releases his hands from the lever handles 5 and 6 in the open position B. Then, the compression coil springs 18 and 19 try to expand due to elastic force. As a result, the spring receiving members 12 and 13 are rotated in the opposite direction. The spring receiving members 12 and 13 rotate the lever handles 5 and 6 connected to the rotary shaft 7 to return to the return position A, that is, the horizontal position.

  When the lever handles 5 and 6 are rotated in the return direction, the guide portions 12b and 13b are rotated and guided in a state where the compression coil springs 18 and 19 are curved as described above. 19 extends in a curved state. As a result, the compression coil springs 18 and 19 can apply a stable elastic force to the spring receiving members 12 and 13, and the lever handles 5 and 6 are reliably returned to the return position A by the compression coil springs 18 and 19. To do. Thus, since the lever handles 5 and 6 are reliably returned to the return position A by the compression coil springs 18 and 19, the operator of the lever handle device 1 is given a good operational feeling.

  The latch assembly 3 also includes a spring that protrudes from the latch 33, and this spring also acts in the direction in which the lever handles 5 and 6 are returned. Accordingly, the springs in the latch assembly 3 can also be combined with the compression coil springs 18 and 19 to return the lever handles 5 and 6, and the lever handles 5 and 6 are heavier or the lever handles 5 and 6 are longer. It is especially effective when it becomes.

  As described above, the compression coil springs 18 and 19 are arranged along the circumferential direction of the bases 8 and 9. By arranging the compression coil springs 18 and 19 in the circumferential direction in this way, the elastic force of the compression coil springs 18 and 19 can be sufficiently ensured without increasing the length in the rotation axis direction. As a result, the compression coil springs 18 and 19 can be accommodated in a casing (standard casing in which the compression coil spring is not accommodated) having substantially the same dimensions as the small casing in the thickness direction of the hinged door 2, and the lever handle. The apparatus 1 can be reduced in size.

  When the lever handle device 1 is assembled, the compression coil springs 18 and 19 are accommodated in the spring accommodating space S, and the end portions of the compression coil springs 18 and 19 are the end faces of the receiving seats 12 c and 13 c and the accommodating recess 17. Since it is the structure which each contacts 17b, the compression coil springs 18 and 19 can be assembled | attached by one-touch. As a result, it is not necessary to connect both ends of the compression coil springs 18 and 19 to other members, and the assembling work can be performed easily and quickly.

  The present invention is not limited to the embodiment described above. For example, the latch assembly 3 may be a lock that allows the latch to be reversed.

It is a disassembled perspective view of the lever handle apparatus which shows one Embodiment of this invention. It is a cross-sectional top view which shows the lever handle apparatus. It is a section front view showing the lever handle device. The inner surface of one side of the lever handle device is shown, (a) is a side view with the lever handle in the return position, and (b) is a side view with the lever handle in the open position. The other inner surface of the lever handle part is shown, (a) is a side view with the lever handle in the return position, and (b) is a side view with the lever handle in the open position. The base of the lever handle | steering-wheel part is shown, (a) is an inner side view, (b) is the II sectional view taken on the line of (a), (c) is the II-II sectional view taken on the line (a). The base of the lever handle part is shown, (a) is an outer side view, (b) is a C arrow view of (a). The spring receiving member of the lever handle part is shown, (a) is an inner side view, (b) is a sectional view taken along line III-III in (a), and (c) is a sectional view taken along line IV-IV in (a). . The spring receiving member of the lever handle part is shown, (a) is an outer side view, (b) is a D arrow view of (a).

Explanation of symbols

1 Door handle device 2 Folding door (door)
3 Latch assembly 5, 6 Lever handle 7 Rotating shaft 8, 9 Base 10, 11 Casing 12, 13 Spring receiving member 15, 16 Cover 17 Storage recess 18, 19 Compression coil spring 33 Latch A Return position B Open position S Spring accommodating space

Claims (2)

A pair of lever handles for operating the latch, a rotation shaft inserted into the door so as to connect the lever handles, and a compression coil for returning the lever handle rotating around the rotation shaft to the return position A spring, a base that is attached to both side surfaces of the door and through which the rotating shaft is inserted, and a spring receiving member that is rotatably attached to the base so as to be rotated by the rotating shaft;
The compression coil spring is accommodated in the base so as to follow the rotation direction of the spring receiving member, and one end of the compression coil spring contacts the spring receiving member and the other end contacts the base. Thus, the compression coil spring urges the lever handle to the return position.   2. The lever handle device according to claim 1, wherein a storage recess is formed in the base, a portion of the spring receiving member is stored in the storage recess, and a portion of the spring receiving member and the storage recess. A spring handle space is formed between the inner surface of the lever handle device, and the compression coil spring is received in the spring handle space.

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