Door handle device

Abstract

This invention provides a lever handle type door handle device that can be easily installed on doors with a box lock recess. [Solution] The lever handles 10 and 20 have shaft portions 11a and 22a that correspond to the bearing portion 31 of the mounting base 30, and in a usage state where the front of the mounting base 30 faces the back of the handles 10 and 20 in an axial position, the handle-side engaging portions 13a and 22b are located axially away from the back of the mounting base 30. Each mounting base 30 has a seat-side engaging portion 32 that engages with the corresponding handle-side engaging portion 13a and 22b of the corresponding lever handle 10 or 20 by moving the handle-side engaging portion 13a and 22b toward the front. In a temporary assembly state where the handle-side engaging portions 13a and 22b are engaged with the seat-side engaging portion 32, the lever handles 10 and 20 are temporarily fixed to the mounting base 30 by the seat-side engaging portion 32 and the handle-side engaging portions 13a and 22b, and each handle 10 or 20 is pushed toward the rear, and axial resistance is applied to the mounting base 30 to position it in the usage state.

Description

Technical Field

[0001] The present invention relates to a door handle device mounted on a door.

Background Art

[0002] A door handle device is installed to enable releasing the provisional latching of a door and opening the door when opening the door. Operation methods for handles included in door handle devices include lever handles, push-pull handles, and the like, and a lock corresponding to the operation method is installed on the door.

[0003] Conventionally, in a lever handle type door handle device used in combination with a mortise box lock, the installation on the door is performed through the following steps: a lock installation step of fixing the lock case of the box lock into the door from the door end; a mounting seat installation step of inserting a plurality of leg portions provided on an outdoor mounting seat into the lock case inside the door, arranging a plurality of screw through portions of an indoor mounting seat so as to face the leg portions in the axial direction, passing the shaft of a male screw member through each screw through portion and screwing the same into the female threads of the opposing leg portions, thereby installing the outdoor mounting seat and the indoor mounting seat at predetermined positions relative to the door and the box lock; and a handle mounting step of passing the square spindle of an outdoor lever handle through in the order of the bearing portion of the installed outdoor mounting seat, the square hole in the lock case inside the door, and the bearing portion of the installed indoor mounting seat, and connecting the shaft portion of the indoor lever handle to the tip end of the square spindle protruding from the indoor mounting seat (for example, see Patent Document 1).

[0004] In this manner, each mounting base of the door handle device installed on the door receives the corresponding lever handle shaft radially at its bearing portion, and in use, the front of each mounting base faces the back of the corresponding lever handle at a predetermined axial position, thereby supporting the corresponding lever handle rotatably. Naturally, in use, it is necessary to restrict the axial inward movement of the corresponding lever handle relative to the corresponding mounting base, so it is necessary to appropriately restrict the axial inward movement of each mounting base relative to the lock and door. As appropriate means of this restriction, the abutment between the door surface on the exterior or interior side of the door and the corresponding mounting base, the abutment between the leg portion and the boss-shaped screw-through portion, and the abutment between the leg portion or boss-shaped screw-through portion and the lock case are used. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Patent No. 2706055 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] However, generally, the installation of door handle devices on doors is performed by a single worker to reduce construction costs. Therefore, in the aforementioned mounting plate installation process, one worker must properly position the corresponding mounting plates on the lock case inside the door from both the inside and outside of the door, and while holding the mounting plate on the outside with one hand to maintain this position, fasten multiple screws from the inside with the other hand. This is inefficient and time-consuming. During the screwing process, it is possible to accidentally drop the male screw component, especially if there is a large gap between the lock case and the inside of the door, in which case the male screw component may fall into the gap and be difficult to retrieve. Furthermore, in apartment building construction, one worker often installs door handle devices on many doors sequentially, and it is undesirable for the installation of a door handle device for each unit to take a long time.

[0007] In light of the above background, the problem that this invention aims to solve is to provide a lever handle type door handle device that can be quickly and easily installed on a door with a box lock recess. [Means for solving the problem]

[0008] To achieve the above objectives, this invention provides a door handle device comprising: a first lever handle with a square spindle; a second lever handle connected to the square spindle; a first mounting seat having a bearing portion that radially supports the shaft portion of the first lever handle; and a second mounting seat having a bearing portion that radially supports the shaft portion of the second lever handle, wherein each mounting seat is capable of rotatably supporting the corresponding lever handle when in use, with the corresponding shaft portion receiving the corresponding bearing portion and the front surface of the corresponding mounting seat facing the back surface of the corresponding lever handle at a predetermined axial position, and the tip side of the square spindle is connected to the shaft portion of the second lever handle, wherein each lever handle is positioned away from the back surface of the corresponding mounting seat in the axial direction when in use. The door handle device adopts a configuration 1 characterized by having a handle-side engaging portion arranged radially outward from the square core, each mounting seat having a seat-side engaging portion that engages with the corresponding handle-side engaging portion of the corresponding lever handle when the corresponding handle-side engaging portion of the lever handle is moved from the axial rear side to the front side, each lever handle is temporarily fixed to the corresponding mounting seat when the corresponding handle-side engaging portion is engaged with the corresponding seat-side engaging portion, and when each lever handle in the temporarily assembled state is pushed axially rear and resistance is applied to the corresponding mounting seat in the direction from the axial rear side to the front side, the corresponding handle-side engaging portion is disengaged from the corresponding seat-side engaging portion axially rear, and the corresponding lever handle and the corresponding mounting seat are positioned in the usage state.

[0009] According to the above configuration 1, a worker installing a door handle device into a door with a box lock can initially treat it as a first temporary assembly unit consisting of a first mounting base and a first lever handle, which are temporarily fixed by the corresponding seat-side engaging part and handle-side engaging part, and a second temporary assembly unit consisting of a second mounting base and a second lever handle. The worker passes the square spindle of the first temporary assembly unit through the square hole of the box lock, inserts the shaft of the second lever handle of the second temporary assembly unit onto the tip of this square spindle, and can appropriately position both temporary assembly units relative to the box lock based on the square spindle passed through the square hole of the box lock. When the worker uses both hands to push the lever handles of both temporary assembly units with the square spindles in the axial direction inward, the resistance applied in the direction axially forward relative to the mounting base moves both lever handles axially inward relative to the corresponding mounting base, disengaging the corresponding handle-side engaging part from the corresponding seat-side engaging part, releasing the temporary fixation, and then positioning both mounting bases and both lever handles in a usable state. Therefore, even a single worker can quickly and easily position both mounting bases appropriately on the door into which the box lock is carved, and connect the shaft of the second lever handle to the tip of the square spindle of the first lever handle.

[0010] Here, "temporarily fixed" is not limited to cases where the corresponding lever handle is fixed so as not to move at all in the axial, circumferential, and radial directions relative to the corresponding mounting base by the engagement of the corresponding handle-side engaging portion and the corresponding seat-side engaging portion, but also includes cases where the relative position of the corresponding lever handle and the corresponding mounting base is limited to a certain range so that the door can be attached by pushing both temporary assembly units axially inward relative to the square core, under conditions where the movement of the corresponding lever handle relative to the corresponding mounting base is not restricted by anything other than the engagement of the corresponding handle-side engaging portion and the corresponding seat-side engaging portion (for example, the worker's hand or other tools), and this also includes cases where there is some play between the corresponding lever handle and the corresponding mounting base within that certain range.

[0011] In the above configuration 1, configuration 2 can be adopted, wherein the engagement portion of either the corresponding seat-side engagement portion or the corresponding handle-side engagement portion has a snap-fit ​​claw that can elastically grip the other engagement portion in the circumferential direction, and a restricting wall that prevents each lever handle from disengaging axially forward relative to the corresponding mounting seat when in the temporary assembly state.

[0012] According to the above configuration 2, when moving the corresponding handle-side engaging portion from the axial rear side to the front side relative to the corresponding seat-side engaging portion in order to engage the corresponding seat-side engaging portion with each other, the snap-fit ​​claws of one engaging portion elastically clamp the other engaging portion in the circumferential direction, thus making it difficult for the corresponding handle-side engaging portion to escape axially inward relative to the corresponding seat-side engaging portion when in a temporary assembly state, and also preventing each lever handle from escaping axially forward relative to its corresponding mounting seat when in a temporary assembly state, thereby ensuring that the engagement between the corresponding handle-side engaging portion and the corresponding seat-side engaging portion is reliably maintained.

[0013] In the above configuration 2, a configuration 3 can be adopted in which the corresponding lever handle and the corresponding mounting seat have a bayonet-type coupling structure that can restrict the axial forward movement of the corresponding lever handle relative to the corresponding mounting seat, the coupling structure has a corresponding handle-side engaging portion, a corresponding seat-side engaging portion, and an opening that penetrates the corresponding mounting seat axially at a position circumferentially away from the corresponding seat-side engaging portion, and the opening has an elastic claw that elastically grips the corresponding handle-side engaging portion passing through the opening in the circumferential or radial direction.

[0014] According to configuration 3 above, the handle-side engaging portion of the corresponding lever handle is passed through the opening of the corresponding mounting base and positioned axially further inward than the corresponding base-side engaging portion. The corresponding lever handle and the corresponding mounting base are rotated relative to each other to bring the handle-side engaging portion and the corresponding base-side engaging portion facing each other axially. The corresponding lever handle is moved axially forward relative to the corresponding mounting base to engage the handle-side engaging portion with the corresponding base-side engaging portion, allowing the corresponding mounting base and the corresponding lever handle to be assembled into a temporary assembly state. Furthermore, since the corresponding mounting base and the lever handle are connected by a bayonet-type coupling structure, a range of rotation of the lever handle that does not release the connection between the corresponding mounting base and the lever handle is provided for operating the box lock. On the box lock side, the square spindle is restricted to the aforementioned range of rotation for lock operation, so when the door handle device is installed on the door, the position of the lever handle is maintained within the range of rotation for lock operation. Furthermore, even if the temporary fastening of the mounting base and lever handle in a pre-assembled state is released for some reason during transport, and the lever handle rotates relative to the mounting base due to its own weight, causing its handle-side engaging portion to reach the opening, the elastic claw prevents it from easily entering the relatively narrow opening, thus preventing the separation of the lever handle and mounting base.

[0015] In any one of the above configurations 1 to 3, a configuration 4 can be adopted, which further includes a recessed box lock, wherein each mounting seat has a leg that protrudes axially inward from the corresponding seat-side engaging portion, and the box lock has a lock case into which each leg can be press-fitted.

[0016] According to configuration 4 above, the worker can release the temporary fixation of both temporary assembly units by simply pushing the lever handles of the two temporary assembly units, which are connected by a square spindle, in the axial direction inward. This causes the legs of each mounting base to be pressed into the lock case, and resistance is applied from the lock case to the legs of each mounting base in the axial direction from the rear to the front. Since the resistance is determined between the lock case provided in the door handle device and the legs of each mounting base, the release of the temporary fixation is made reliable. [Effects of the Invention]

[0017] As described above, by adopting the above configuration 1, the present invention can provide a lever handle-type door handle device that can be quickly and easily installed on a door with a mortise lock carved therein. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] [Figure 1] (a) is a cross-sectional view showing both lever handles and both mounting seats in a temporarily assembled state comprised in the door handle device according to the first embodiment of the present invention, (b) is a partial cross-sectional view showing a state in the middle of installing the door handle device according to the first embodiment onto a door [Figure 2] A diagram schematically showing the relationship between the back surface of the mounting seat of the door handle device of Fig. 1(b) and the mortise lock [Figure 3] A front view of the mounting seat according to the first embodiment [Figure 4] A back view of the mounting seat shown in Fig. 3 [Figure 5] A cross-sectional view of the mounting seat shown in Fig. 3 [Figure 6] A vertical cross-sectional view of the mounting seat shown in Fig. 3 [Figure 7] (a) is a diagram schematically showing an initial phase viewed from the back side when connecting the first mounting seat and the first lever handle according to the first embodiment via bayonet coupling, (b) is a diagram showing the phase when the first mounting seat is rotated 45° relative to the first lever handle from the state of (a), (c) is a diagram showing the phase when the first mounting seat is further rotated 45° from the state of (b) [Figure 8] A partial perspective view from the back side showing the first mounting seat and the first lever handle according to the first embodiment in a temporarily assembled state [Figure 9] A partial perspective view showing the first mounting seat and the first lever handle in a use state from the state of Fig. 8 [Figure 10] (a) is a cross-sectional view showing both lever handles and both mounting seats in a use state from the state of Fig. 1(a), (b) is a partial cross-sectional view showing a state where the door handle device according to the first embodiment is installed on a door [Figure 11] A modified example of part A in Fig. 5 [Figure 12](a) is a partial cross-sectional view showing the temporarily assembled state of the mounting seat and the lever handle according to the second embodiment of the present invention, (b) is a partial cross-sectional view showing the use state of the mounting seat and the lever handle according to the second embodiment, (c) is a partial rear view showing the temporarily assembled state of the handle-side engaging portion and the seat-side engaging portion according to the second embodiment, (d) is a partial rear view showing the use state of the handle-side engaging portion and the seat-side engaging portion according to the second embodiment [Figure 13] (a) is a partial cross-sectional view showing the temporarily assembled state of the mounting seat and the lever handle according to the third embodiment of the present invention, (b) is a partial cross-sectional view showing the use state of the mounting seat and the lever handle according to the third embodiment, (c) is a partial rear view showing the temporarily assembled state of the handle-side engaging portion and the seat-side engaging portion according to the third embodiment, (d) is a partial rear view showing the use state of the handle-side engaging portion and the seat-side engaging portion according to the third embodiment [Figure 14] (a) is a partial cross-sectional view showing a state where the seat-side engaging portion of the mounting seat according to the fourth embodiment of the present invention passes through the inlet portion of the rotation restricting member on the lever handle side, (b) is a partial cross-sectional view showing a state where the mounting seat according to the fourth embodiment is rotatable relative to the rotation restricting member, (c) is a front view of the temporarily assembled state in which the mounting seat and the rotation restricting member according to the fourth embodiment are engaged, as viewed from the axially front side DETAILED DESCRIPTION OF EMBODIMENTS

[0019] A door handle device according to a first embodiment as an example of the present invention (hereinafter referred to as "this door handle device") will be described with reference to FIGS. 1 to 10 of the accompanying drawings.

[0020] This door handle device shown in FIGS. 1 and 2 comprises a first lever handle 10, a second lever handle 20, a first mounting seat 30 that supports the first lever handle 10, a second mounting seat 30 that supports the second lever handle 20, and a box lock 40 engraved in a door 100. In FIG. 1(b), the outdoor door surface, the indoor door surface, and the door leading end of the door 100 are schematically shown by two-dot chain lines, and the box lock 40 is schematically shown in FIGS. 1(b) and 2.

[0021] Door 100 is a hinged door used to open and close entrances for people, such as the front door of a house or the entrance to a private room. When door 100 is opened, the latch 41 of the box lock 40 is released by turning the first lever handle 10 located on the exterior side of the door 100 or the second lever handle 20 located on the interior side.

[0022] The first lever handle 10 comprises a first lever body 11, a shaft portion 11a formed on the back surface of the first lever body 11, a square spindle 12 fitted onto the shaft portion 11a, and a pin 13 connecting the shaft portion 11a and the square spindle 12. The shaft portion 11a is integrally provided with the first lever body 11 without any joints. The back surface of the first lever body 11 is recessed on the axial side towards the front around the shaft portion 11a. The shaft portion 11a has a square hole portion corresponding to the square spindle 12, and is fitted with the square spindle 12 in an interlocking shape so that it can rotate integrally in the circumferential direction. The pin 13 connects the shaft portion 11a and the square spindle 12 in a straight radial direction. The means of fixing the pin 13 is generally press-fitting into the pin hole, in which case, for example, a spring pin is used as the pin 13. One end of the pin 13 is a handle-side engaging portion 13a that protrudes from the shaft portion 11a in the aforementioned straight radial direction.

[0023] Here, the axial direction refers to the direction along the rotation axis of the square spindle 12 of the first lever handle 10, the radial direction refers to the direction perpendicular to that rotation axis, and the circumferential direction refers to the direction along the circumference of the circle centered on that rotation axis. The same meaning will be used hereafter. Furthermore, the side of a certain object that is closer to the box lock 40 in the axial direction is called the "rear side in the axial direction," and conversely, the side of a certain object that is farther from the box lock 40 in the axial direction is called the "front side in the axial direction." Also, the surface that appears when a certain object is viewed from the rear side in the axial direction is called the "back," and conversely, the surface that appears when a certain object is viewed from the front side in the axial direction is called the "front."

[0024] The second lever handle 20 includes a second lever body 21, a cylindrical member 22 fixed to the back of the second lever body 21, and a shaft portion 22a and a handle-side engaging portion 22b formed on the cylindrical member 22. The shaft portion 22a has a square hole portion corresponding to the tip of the square spindle 12. A locking mechanism is incorporated between the cylindrical member 22 and the back of the second lever body 21, which can adjust the axial insertion amount of the tip of the square spindle 12 relative to the shaft portion 22a within a predetermined stroke range and fix it in the adjusted position. The means for fixing the square spindle 12 to the shaft portion 22a of the second lever handle 20 may be fixed using a set screw, or in this case, the shaft portion 22a may be formed on the back of the second lever body 21. The handle-side engaging portion 22b protrudes in a straight radial direction at one point in the circumferential direction of the shaft portion 22a.

[0025] The first mounting base 30 supports the shaft portion 11a of the first lever handle 10 in the radial direction and restricts its movement toward the rear in the axial direction. The second mounting base 30 supports the shaft portion 22a of the second lever handle 20 in the radial direction and restricts its movement toward the rear in the axial direction. Generally, the first lever handle 10 with a square spindle 12 is positioned on the exterior side of the door 100, so the first mounting base 30 is also positioned on the exterior side, while the second lever handle 20 and the second mounting base 30 are positioned on the interior side of the door 100.

[0026] The first mounting seat 30 has a bearing portion 31 that supports the shaft portion 11a in the radial direction. As shown in Figures 3 to 6, the bearing portion 31 can support the shaft portion 11a in the radial direction by circular arc surfaces formed at four equally spaced locations in the circumferential direction on the inner circumference that penetrates the first mounting seat 30 in the axial direction.

[0027] Furthermore, the first mounting seat 30 has a seat-side engaging portion 32 on its inner circumference at a circumferential position different from that of the bearing portion 31. The seat-side engaging portion 32 is provided at two locations 180° symmetrically in the circumferential direction. The seat-side engaging portion 32 consists of a pair of snap-fit ​​claws 32a in the circumferential direction and a restricting wall 32b that closes the space between the pair of snap-fit ​​claws 32a on the axial front side relative to the pair of snap-fit ​​claws 32a. The space between each snap-fit ​​claw 32a and the bearing portion 31 is a slit that penetrates the first mounting seat 30 in the axial direction. On the back surface of the first mounting seat 30, a gap is formed between the pair of snap-fit ​​claws 32a of the seat-side engaging portion 32, opening towards the axial rear side.

[0028] Furthermore, as shown in Figures 3 to 6, the first mounting seat 30 has an opening 33 that penetrates the first mounting seat 30 axially at a position circumferentially away from the seat-side engaging portion 32. The opening 33 is composed of a pair of elastic claws 33a in the circumferential direction and an inner circumferential portion 33b extending between the roots of these elastic claws 33a. There is a slit between each elastic claw 33a and the bearing portion 31 that penetrates the first mounting seat 30 axially. The opening 33 is located at a position 90° circumferentially away from adjacent seat-side engaging portions 32 in the circumferential direction and is provided at two locations 180° symmetrically in the circumferential direction. In the illustrated example, the shape of the pair of elastic claws 33a on the back surface of the first mounting seat 30 is the same as the shape of the pair of snap-fit ​​claws 32a.

[0029] The first mounting seat 30 also has a pair of legs 34 provided symmetrically in the longitudinal direction of the first mounting seat 30, a seating surface 35 that forms the outer circumference of the back of the first mounting seat 30, and a sliding surface 36 located on the front of the first mounting seat 30, axially closer to the front than the bearing portion 31. The legs 34 have a hollow C-shaped cross-section and extend axially inward from the seating surface 35. The pair of legs 34 are provided 180° symmetrically in the circumferential direction in the same phase as the opening portion 33. The seating surface 35 is superimposed on the exterior door surface of the door 100, as shown in Figure 1. The sliding surface 36 faces axially the bottom surface of the recess 11b formed on the back of the first lever handle 10. The sliding surface 36 is a part that restricts the axial movement of the first lever handle 10 inward by abutting with the recess 11b.

[0030] The first mounting seat 30 and the first lever handle 10 have a bayonet-type coupling structure that can restrict the axial movement of the first lever handle 10 toward the front relative to the first mounting seat 30. This coupling structure consists of the aforementioned bearing portion 31, each seat-side engaging portion 32, each insertion portion 33, and the handle-side engaging portion 13a.

[0031] In the process of connecting the first mounting seat 30 and the first lever handle 10 by the bayonet-type coupling structure described above, first, as shown in Figure 7(a), the shaft portion 11a is supported radially by the bearing portion 31, while the handle-side engaging portion 13a is pushed through between the pair of elastic claws 33a of the opening portion 33, so that it is positioned axially inward from the bearing portion 31. At this time, the pair of elastic claws 33a elastically grip the handle-side engaging portion 13a that passes through the opening portion 33 in the circumferential direction.

[0032] Next, when the first mounting seat 30 and the shaft portion 11a are rotated relative to each other by 90°, as shown in Figure 7(b), the handle-side engaging portion 13a passes over the back surface of the bearing portion 31 and reaches a position facing the gap between the pair of snap-fit ​​claws 32a in the axial direction, as shown in Figure 7(c). At this position, when the seat-side engaging portion 32 and the handle-side engaging portion 13a are brought relatively closer in the axial direction, the seat-side engaging portion 32 receives the handle-side engaging portion 13a between the pair of snap-fit ​​claws 32a from the axial rear side to the front side, as shown in Figures 1 and 8. At this time, the pair of snap-fit ​​claws 32a can elastically grip the handle-side engaging portion 13a in the circumferential direction, and the regulating wall 32b shown in Figures 4 and 5 can reliably prevent the handle-side engaging portion 13a from escaping from the seat-side engaging portion 32 to the axial front side.

[0033] As a result of the aforementioned coupling process, the first lever handle 10 is in a temporarily assembled state in which its handle-side engaging portion 13a is inserted into the seat-side engaging portion 32 of the first mounting seat 30, and is temporarily fixed to the first mounting seat 30 by friction between the seat-side engaging portion 32 and the handle-side engaging portion 13a.

[0034] When the handle-side engaging portion 13a is released axially inward from the seat-side engaging portion 32 in the temporary assembly state shown in Figure 8, the handle-side engaging portion 13a can rotate freely in the circumferential direction relative to the first mounting seat 30, as shown in Figure 9.

[0035] The second mounting base 30 shown in Figure 1 is identical in shape to the first mounting base 30, and is simply positioned axially symmetrically with respect to the first mounting base 30. Therefore, a detailed explanation of the second mounting base 30 is omitted, and the corresponding component reference numerals are indicated in the figure. Furthermore, the handle-side engaging portion 22b of the second lever handle 20 has a substantially identical shape to the handle-side engaging portion 13a of the first lever handle 10. Therefore, the second mounting base 30 and the second lever handle 20 also have the same bayonet-type coupling structure as described above, and can be temporarily fixed in the same way. In addition, the seating surface 35 of the second mounting base 30 is superimposed on the interior door surface of the door 100. Furthermore, the sliding surface 36 of the second mounting base 30 faces the recessed bottom surface of the recess 21b formed on the back of the second lever body 21 in the axial direction, and serves to restrict the axial movement of the second lever handle 20 toward the rear by abutting with the recess 21b.

[0036] The box lock 40 shown in Figures 1 and 2 comprises a latch 41, a lock case 42, and an input cam 43 held within the lock case 42. The input cam 43 has a square hole 43a that corresponds to the square spindle 12. The latch 41 is movable according to the rotational position of the input cam 43.

[0037] The lock case 42 has notches 42a and 42b arranged to correspond to the legs 34 of the first mounting seat 30 and the legs 34 of the second mounting seat 30. The legs 34 of the first mounting seat 30 can be inserted axially into each notch 42a and 42b from the outside, and the legs 34 of the second mounting seat 30 can be inserted axially from the inside, and these legs 34 on both sides can be press-fitted into the corresponding notches 42a or 42b. In this case, the legs 34 with a C-shaped cross-section can be elastically deformed to absorb excessive pressure during press-fitting, so that press-fitting can be easily performed.

[0038] The installation of this door handle device onto the door is performed with the box lock 40 fixed in place by being cut into the inside of the door 100 from the edge of the door 100, as shown in Figures 1(b) and 2. This installation can be performed by one worker. Specifically, the work of installing the first and second mounting bases 30, 30 and the first and second lever handles 10, 20 onto the door 100 is performed by preparing a first temporary assembly unit consisting of the first mounting base 30 and the first lever handle 10 in a temporarily assembled state, and a second temporary assembly unit consisting of the second mounting base 30 and the second lever handle 20 in a temporarily assembled state, as shown in Figure 8. The square spindle 12 of the first temporary assembly unit is passed through the square hole 43a of the input cam 43, the shaft portion 22a of the second temporary assembly unit is inserted into the tip of the square spindle 12, and the respective legs 34 of the first and second temporary assembly units are inserted into the corresponding notches 42a and 42b of the lock case 42, and they are positioned as shown in Figure 1. From this position, the first lever handle 10 of the first temporary assembly unit is pushed axially inward with one hand extended to the outside of the door 100, and the second lever handle 20 of the second temporary assembly unit is pushed axially inward with the other hand extended to the inside, thereby positioning it to the usable state shown in Figure 10. At this time, the friction between the legs 34 pressed into the notches 42a and 42b of the lock case 42 and the notches 42a and 42b provides resistance to each leg 34. As a result, as shown in Figures 9 and 10, the handle-side engaging part 13a is released axially inward from the seat-side engaging part 32 of the first temporary assembly unit, and the handle-side engaging part 22b is released axially inward from the seat-side engaging part 32 of the second temporary assembly unit, releasing the temporary fixation of both temporary assembly units. When the first and second lever handles 10 and 20 are pushed to the state shown in Figure 10, the seating surfaces 35 of the first and second mounting bases 30 and 30 overlap with the corresponding door surfaces of the door 100, completing the positioning of the first and second mounting bases 30 on the door 100, and also completing the connection of the shaft portion 22a of the second lever handle 20 to the tip of the square spindle 12. After this overlap, even if the first and second lever handles 10 and 20 are pushed further, the sliding surfaces 36 of the first and second mounting bases 30 and 30 abut against the recessed bottom surface of the corresponding recess 11b or 21b, thereby preventing the first and second lever handles 10 and 20 corresponding to the first and second mounting bases 30 and 30 from being pushed in excessively.After the placement of the first and second mounting bases 30 on the door 100 and the connection of the shaft portion 22a to the tip of the square spindle 12 are completed, the position of the square spindle 12 relative to the shaft portion 22a may be adjusted and fixed as needed.

[0039] In the usage state shown in Figure 10, the corresponding bearing portions 31 of the first and second mounting seats 30, 30 support the corresponding shaft portions 11a or 22a radially, and the corresponding sliding surfaces 36, 36 are positioned opposite the recesses 11b or 21b of the corresponding lever handle 10 or 20 at a predetermined axial position. Since neither of the handle-side engaging portions 13a or 22b faces the corresponding first or second mounting seat 30 in the circumferential direction, the first and second mounting seats 30 can rotatably support the corresponding first or second lever handle 10 or second lever handle 20.

[0040] The door handle device (see Figures 9 and 10) is as described above and comprises a first lever handle 10 with a square spindle 12, a second lever handle 20 connected to the square spindle 12, a first mounting seat 30 having a bearing portion 31 that radially supports the shaft portion 11a of the first lever handle 10, and a second mounting seat 30 having a bearing portion 31 that radially supports the shaft portion 22a of the second lever handle 20. Each mounting seat 30 is configured to support the corresponding lever handle 10 or 20 rotatably when the corresponding bearing portion 31 receives the corresponding shaft portion 11a or 22a and the front of the corresponding mounting seat 30 is facing the back of the corresponding lever handle 10 or 20 at a predetermined axial position. The tip of the square spindle 12 is connected to the shaft portion 22a of the second lever handle 20.

[0041] In particular, this door handle device has a handle-side engaging portion 13a or 22b that is positioned radially outward from the square spindle such that each lever handle 10, 20 is located away from the rear surface of the corresponding mounting base 30 in the axial direction when in use, and each mounting base 30 has a seat-side engaging portion 32 that can receive the handle-side engaging portion 13a or 22b of the corresponding lever handle 10 or 20 from the rear axial direction toward the front, and when each lever handle 10, 20 (see Figures 1 and 8) is in a temporary assembly state in which the corresponding handle-side engaging portion 13a or 22b is inserted into the corresponding seat-side engaging portion 32, it is temporarily fixed to the corresponding mounting base 30 by friction between the corresponding seat-side engaging portion 32 and the corresponding handle-side engaging portion 13a or 22b, and each lever handle 10 in the temporary assembly state, As part 20 is pushed axially inward and the corresponding mounting seat 30 is subjected to resistance from axially inward to forward, the corresponding handle-side engaging part 13a or 22b (see Figures 9 and 10) is disengaged axially inward from the corresponding seat-side engaging part 32, so that the corresponding lever handle 10 or 20 and the corresponding mounting seat 30 are positioned in the aforementioned usage state. Therefore, a worker installing this door handle device into a door 100 with a box lock 40 recessed can initially treat it as a first temporary assembly unit consisting of the first mounting seat 30 and the first lever handle 10, which are temporarily fixed by the corresponding seat-side engaging part 32 (see Figures 1, 2, and 8) and the handle-side engaging part 13a or 22b, and a second temporary assembly unit consisting of the second mounting seat 30 and the second lever handle 20. The worker inserts the square spindle 12 of the first temporary assembly unit through the square hole 43a of the box lock 40, and inserts the shaft portion 22a of the second lever handle 20 of the second temporary assembly unit into the tip end of the square spindle 12, thereby appropriately positioning both temporary assembly units relative to the box lock 40 using the square spindle 12 inserted through the square hole 43a of the box lock 40 as a reference. When the worker uses both hands to push the lever handles 10 and 20 of both temporary assembly units through which the square spindle 12 is inserted axially inward, the resistance applied to the mounting base 30 moves both lever handles 10 and 20 axially inward relative to the corresponding mounting base 30, disengaging the corresponding handle-side engaging portion 13a or 22b from the corresponding seat-side engaging portion 32 (see Figures 9 and 10), releasing the temporary fixation, and then the mounting bases 30 and lever handles 10 and 20 can be positioned in a usable state.Therefore, even a single worker can quickly and easily position both mounting bases 30, 30 appropriately on the door 100 into which the box lock 40 is recessed, and connect the shaft portion 22a of the second lever handle 20 to the tip side of the square spindle 12 of the first lever handle 10. In this way, this door handle device can be provided as a lever handle type door handle device that can be quickly and easily installed on the door 100 into which the box lock 40 is recessed.

[0042] Furthermore, this door handle device (see Figures 1, 2, 8 to 10 as appropriate below) has a snap-fit ​​claw (in this embodiment, a snap-fit ​​claw 32a provided on the seat-side engaging portion 32) that can elastically grip the other engaging portion (in this embodiment, the handle-side engaging portion 13a or 22b) in the circumferential direction, and a restricting wall 32b that prevents each lever handle 10 or 20 from detaching axially forward relative to the corresponding mounting base 30 when in a temporary assembly state. When moving 22b from the axial rear side to the front side relative to the corresponding seat-side engaging portion 32, the snap-fit ​​claw of one engaging portion (in this embodiment, the snap-fit ​​claw 32a of the seat-side engaging portion 32) has the ability to elastically clamp the other engaging portion (in this embodiment, the handle-side engaging portion 13a or 22b) in the circumferential direction. Therefore, when in a temporary assembly state, it is difficult for the corresponding handle-side engaging portion 13a or 22b to escape axially inward relative to the corresponding seat-side engaging portion 32. Furthermore, when in a temporary assembly state, the restricting wall 32b prevents each lever handle 10, 20 from escaping axially forward relative to the corresponding mounting seat 30, thereby ensuring that the engagement between the corresponding handle-side engaging portion 13a or 22b and the corresponding seat-side engaging portion 32 is reliably maintained.

[0043] Furthermore, if part A of the cross-sectional view of the mounting base shown in Figure 5 is deformed, for example, as shown in Figure 11, and the width D of the handle-side engaging portion 13a is made wider than the width W1 on the rear side of the seat-side engaging portion 32 and narrower than the width W2 on the front side of the seat-side engaging portion 32, the handle-side engaging portion 13a and the seat-side engaging portion 32 can maintain a temporary assembly state more reliably. In this case, when moving the corresponding seat-side engaging portion 32 and the corresponding handle-side engaging portion 13a from the rear side to the front side in the axial direction, it is possible for one engaging portion 32 to elastically grip the other engaging portion 13a in the circumferential direction with the snap-fit ​​claw 32a during the movement, but when in a temporary assembly state, there is some play between the other engaging portion 13a that is in contact with the restricting wall 32b and the snap-fit ​​claw 32a. Thus, in this invention, when the parts are in a temporary assembly state, it is not necessary for the other engaging part, which is the counterpart to the handle-side engaging part, to be constantly elastically clamped in the circumferential direction by the one engaging part having a snap-fit ​​claw, and the corresponding mounting seat and the corresponding lever handle may be temporarily fixed in a state of play when the parts are in a temporary assembly state.

[0044] Furthermore, this door handle device has a bayonet-type coupling structure that restricts the axial forward movement of the corresponding lever handle 10 or 20 relative to the corresponding mounting seat 30 between the corresponding lever handle 10 or 20 and the corresponding mounting seat 30, and the coupling structure has a corresponding handle-side engaging portion 13a or 22b, a corresponding seat-side engaging portion 32, and an opening portion 33 that penetrates the corresponding mounting seat 30 axially at a position circumferentially away from the corresponding seat-side engaging portion 32, and the opening portion 33 passes through the corresponding handle-side engaging portion 13a or Since it has a pair of elastic claws 33a that elastically grip 22b in the circumferential direction, the handle-side engaging portion 13a or 22b of the corresponding lever handle 10 or 20 is passed through the opening 33 of the corresponding mounting seat 30 and positioned axially further inward than the corresponding seat-side engaging portion 32, the corresponding lever handle 10 or 20 and the corresponding mounting seat 30 are rotated relative to each other so that the corresponding handle-side engaging portion 13a or 22b and the corresponding seat-side engaging portion 32 face each other in the axial direction, and the corresponding lever handle 10 or 20 is moved axially forward relative to the corresponding mounting seat 30 to engage the corresponding seat-side engaging portion 3 By inserting the corresponding handle-side engaging portion 13a or 22b into 2, it is possible to assemble the corresponding mounting base 30 and the corresponding lever handle 10 or 20 into a temporary assembly state. Furthermore, since the corresponding mounting base 30 and the lever handle 10 or 20 are connected by a bayonet-type coupling structure, a range of rotation of the lever handles 10 and 20 is provided for lock operation without releasing the connection between the corresponding mounting base 30 and the lever handle 10 or 20. On the box lock 40 side, the square spindle 12 is restricted to the aforementioned range of rotation for lock operation, so this door handle device can be attached to the door 100. Once installed, the lever handles 10 and 20 are kept within the rotational range for lock operation. Furthermore, even if the temporary fixing of the corresponding mounting base 30 and lever handle 10 or 20 is released for some reason while they are being transported in a temporarily assembled state, and the lever handle 10 or 20 rotates relative to the mounting base 30 due to its own weight, causing its handle-side engaging portion 13a or 22b to reach the opening 33, it cannot easily get into the relatively narrow pair of elastic claws 33a. Therefore, separation of the lever handle 10 or 20 and the mounting base 30 can be prevented.

[0045] Furthermore, this door handle device also includes a recessed box lock 40, and each mounting seat 30 has a leg portion 34 that protrudes axially inward from the corresponding seat-side engaging portion 32, and the box lock 40 has a lock case 42 into which each leg portion 34 can be press-fitted. Therefore, by simply pushing the lever handles 10 and 20 of the two temporary assembly units, onto which the square spindle 12 is placed, axially inward, the leg portions 34 of each mounting seat 30 are press-fitted into the lock case 42, and resistance is applied from the lock case 42 to the leg portions 34 of each mounting seat 30 in a direction from axially inward to forward, thereby releasing the temporary fixation of the two temporary assembly units. In this way, the aforementioned resistance is determined between the lock case 42 and the leg portions 34 of each mounting seat 30 in this door handle device, making the release of the temporary fixation reliable. It is also possible to configure the system so that the resistance is determined by the abutment between the door surface of door 100 and the seat surface 35, or between the inner circumference of the opening of door 100 and the outer circumference of the mounting base 30. However, in this case, there is concern about releasing the temporary fixation if the dimensional accuracy of door 100 is not guaranteed. For example, if door 100 is made of wood, the flatness of the door surface and the dimensional accuracy of the opening cut out of the door are low. Also, in the case of renovations where only the door handle device is replaced, even if the door surface or opening, which has deteriorated over time, is processed on-site, the dimensional accuracy such as flatness will be low, which may result in insufficient resistance.

[0046] In this door handle device, an example is shown in which the mounting base 30 and the corresponding lever handle 10 or 20 are connected by a bayonet-type coupling structure, but temporary fixing may be achieved with other coupling structures. A second embodiment as an example is shown in Figure 12. Below, only the changes from the first embodiment will be described.

[0047] In the second embodiment, the handle-side engaging portion 14 is provided by fitting and fixing a rectangular annular member to the outer peripheral tip of the shaft portion 11a of the corresponding lever handle 10 while the shaft portion 11a of the corresponding lever handle 10 is passed through the corresponding mounting seat 60. A seat-side engaging portion 61 is formed on the back surface of the corresponding mounting seat 60, which is shaped to fit onto the outer circumference of the handle-side engaging portion 14. A radial interference fit is provided between the seat-side engaging portion 61 and the outer circumference of the handle-side engaging portion 14. Therefore, when the handle-side engaging portion 14 is press-fitted into the seat-side engaging portion 61 of the corresponding mounting seat 60 from the axial rear side to the front side, the corresponding mounting seat 60 and the corresponding lever handle 10 are temporarily fixed together by friction between the seat-side engaging portion 61 and the outer circumference of the handle-side engaging portion 14, resulting in the temporary assembly state shown in Figure 12(a). Furthermore, in the usage state shown in Figure 12(b), where the corresponding handle-side engaging portion 14 is disengaged axially inward from the seat-side engaging portion 61 of the corresponding mounting seat 60, the outer circumference of the handle-side engaging portion 14 does not face the corresponding mounting seat 60 in the circumferential direction, and the corresponding mounting seat 60 can rotatably support the corresponding lever handle 10.

[0048] In the door handle devices of the first and second embodiments, examples were shown in which the handle-side engaging portion protrudes radially outward, but other engaging structures are also possible. A third embodiment is shown as an example. Below, only the changes from the first embodiment will be described.

[0049] In the third embodiment, the shaft portion 11a of the corresponding lever handle 10 is passed through the corresponding mounting seat 70, and a rotation restricting member 45 is fitted and fixed to the outer peripheral tip of the shaft portion 11a. On the outer circumference of the rotation restricting member 45, a handle-side engaging portion 46 is formed between a pair of snap-fit ​​claws 45a. On the back surface of the corresponding mounting seat 70, a seat-side engaging portion 71 is formed between the snap-fit ​​claws 45a of the handle-side engaging portion 46, with a shape that fits toward the axial rear. A circumferential tightening allowance is set between the seat-side engaging portion 71 and the outer circumference of the handle-side engaging portion 46. Therefore, when the seat-side engaging portion 71 of the corresponding mounting seat 70 is press-fitted into the handle-side engaging portion 46 from the axial front side toward the rear side, the friction between the seat-side engaging portion 71 and the handle-side engaging portion 46 temporarily fixes the corresponding mounting seat 70 and the corresponding lever handle 10, resulting in the temporary assembly state shown in Figure 13(a). Furthermore, in the usage state shown in Figure 13(b), where the corresponding handle-side engaging portion 46 is disengaged axially inward from the seat-side engaging portion 71 of the corresponding mounting seat 70, the handle-side engaging portion 46 does not face the corresponding mounting seat 70 in the axial direction, and the corresponding mounting seat 70 can rotatably support the corresponding lever handle 10. In addition, when the lever handle 10 is temporarily fixed to the corresponding mounting seat 70 by the snap-fit ​​claw 45a, there is a restricting wall 70b that prevents the lever handle 10 from disengaging axially inward from the corresponding mounting seat 70.

[0050] A fourth embodiment of the engagement structure, as another example, is shown in Figure 14. In the fourth embodiment, the shaft portion 11a of the corresponding lever handle 10 is inserted into the corresponding mounting seat 80, and the rotation restricting member 50 is fitted and fixed to the tip of the shaft portion 11a. Here, on the outer circumference of the rotation restricting member 50, on the axially inner side, there are two handle-side engagement portions 52 consisting of a snap-fit ​​claw 50a, a clamping wall 50b, and a restricting wall 52b, arranged 180° symmetrically in the circumferential direction. At different angular positions from the handle-side engagement portions 52, there are two insertion portions 53 arranged 180° symmetrically in the circumferential direction. The corresponding mounting seat 80 has a seat-side engagement portion 80a mounted radially inward.

[0051] In the fourth embodiment, the first mounting seat 80 and the first lever handle 10 have a bayonet-type coupling structure that can restrict the axial forward movement of the first lever handle 10 relative to the first mounting seat 80. The coupling structure consists of a bearing portion 81 provided on the inner circumference side of the first mounting seat 80, each handle-side engaging portion 52 on the rotation restricting member 50, each insertion portion 53, and a seat-side engaging portion 80a.

[0052] In the process of connecting the first mounting seat 80 and the first lever handle 10 by the bayonet-type coupling structure described above, first, as shown in Figure 14(a), the shaft portion 11a is supported radially by the bearing portion 81, while the seat-side engaging portion 80a is pushed through while deforming the elastic claw 53a of the insertion portion 53. At this time, the elastic claw 53a elastically biases the seat-side engaging portion 80a passing through the insertion portion 53 in the radial direction.

[0053] Next, when the first mounting seat 80 and the shaft portion 11a are rotated relative to each other by 90°, as shown in Figure 14(b), the seat-side engaging portion 80a passes over the front-side stepped portion of the rotation restricting member 50 and reaches a position facing the gap between the snap-fit ​​claw 50a and the clamping wall 50b in the axial direction. At this position, when the seat-side engaging portion 80a and the handle-side engaging portion 52 are brought relatively closer in the axial direction, the handle-side engaging portion 52 receives the seat-side engaging portion 80a between the snap-fit ​​claw 50a and the clamping wall 50b from the axial front side to the rear side. At this time, the snap-fit ​​claw 50a and the clamping wall 50b can elastically clamp the seat-side engaging portion 80a in the circumferential direction, and the restricting wall 52b can reliably prevent the seat-side engaging portion 80a from escaping from the handle-side engaging portion 52 to the axial rear side.

[0054] As a result of the aforementioned coupling process, the first lever handle 10 is in a temporarily assembled state in which its seat-side engaging portion 80a is inserted into the handle-side engaging portion 52 of the rotation restricting member 50, and is temporarily fixed to the first mounting seat 80 by friction between the seat-side engaging portion 80a and the handle-side engaging portion 52.

[0055] When the seat-side engaging portion 80a is released axially towards the front from the handle-side engaging portion 52 in the temporarily assembled state, the seat-side engaging portion 80a can rotate freely in the circumferential direction relative to the rotation restricting member 50.

[0056] In this embodiment, the elastic claw 53a is configured to elastically bias the seat-side engaging portion 80a that passes through the opening portion 53 in the radial direction, but it may also be configured to elastically bias in the circumferential direction, and its shape is not limited to a cantilever shape. Similarly, the snap-fit ​​claw is not limited to the disclosed shape.

[0057] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is indicated by the claims rather than by the foregoing description, and all modifications within the meaning and scope equivalent to the claims are intended to be included. [Explanation of Symbols]

[0058] 10, 20 Lever handles 11a, 22a shaft part 12 square core 13a, 14, 22b, 46, 52 Handle side engagement part 30, 60, 70, 80 Mounting base 31, 81 Bearing section 32, 61, 71, 80a Seat side engagement part 32a, 45a, 50a snap-fit ​​claws 32b, 52b, 70b Barrier walls 33, 53 Opening section 33a, 53a Elastic claws 34 Legs 40 Box Locks 42 Lock Cases 42a, 42b Notch

Claims

1. The first lever handle with a square spindle, A second lever handle connected to the aforementioned square shaft, A first mounting seat having a bearing portion that radially supports the shaft portion of the first lever handle, The second mounting seat comprises a bearing portion that radially supports the shaft portion of the second lever handle, Each of the aforementioned mounting seats is capable of rotatably supporting the corresponding lever handle when it is in use with the corresponding bearing portion receiving the corresponding shaft portion and the front surface of the corresponding mounting seat facing the back surface of the corresponding lever handle at a predetermined axial position. In a door handle device in which the tip of the square spindle is connected to the shaft portion of the second lever handle, Each of the lever handles has a handle-side engaging portion that is positioned radially outward from the square core such that, in the state of use, it is located away from the back surface of the corresponding mounting base toward the rear in the axial direction, Each of the aforementioned mounting seats has a seat-side engaging portion that engages with the corresponding handle-side engaging portion of the corresponding lever handle by moving the handle-side engaging portion from the axial rear side to the front side. A door handle device characterized in that each lever handle is temporarily fixed to the corresponding mounting seat when the corresponding handle-side engaging portion is engaged with the corresponding seat-side engaging portion, and when each lever handle in the temporarily assembled state is pushed axially inward and resistance is applied to the corresponding mounting seat in the direction from axially inward to forward, the corresponding handle-side engaging portion is disengaged from the corresponding seat-side engaging portion axially inward, and the corresponding lever handle and the corresponding mounting seat are positioned in the usage state.

2. The door handle device according to claim 1, wherein one of the corresponding seat-side engaging portion and the corresponding handle-side engaging portion has a snap-fit ​​claw capable of elastically gripping the other engaging portion in the circumferential direction, and a restricting wall that prevents each lever handle from detaching axially forward relative to the corresponding mounting seat when in the pre-assembled state.

3. The corresponding lever handle and the corresponding mounting base have a bayonet-type coupling structure that can restrict the axial forward movement of the corresponding lever handle relative to the corresponding mounting base. The coupling structure has a corresponding handle-side engaging portion, a corresponding seat-side engaging portion, and an opening portion that penetrates the corresponding mounting seat axially at a position circumferentially away from the corresponding seat-side engaging portion. The door handle device according to claim 2, wherein the opening portion has an elastic claw that elastically grips the corresponding handle-side engaging portion that passes through the opening portion in the circumferential or radial direction.

4. It also features a recessed box lock, Each of the aforementioned mounting seats has a leg portion that protrudes axially inward from the corresponding seat-side engaging portion, The door handle device according to any one of claims 1 to 3, wherein the box lock has a lock case into which each of the legs can be press-fitted.

Images