Plane Handle

Abstract

To simply attach a handle case to a door panel by a single operation.SOLUTION: In a flat handle, a case hook 12 is provided on an upper face of a handle case 1, and a case hook mechanism 15D is provided on a lower face. A back face side of the handle case 1 is inserted into an attachment opening of a door panel along with the case hook 12. A hook 15 of the case hook mechanism 15D is pressed by an edge of the opening while being passed through the opening, and the hook 15 is projected on the back face side of the door panel. Thus, a flange 11 is press-contacted to the periphery of the opening on a front face side of the door panel, and the case hook 12 and the hook 15 are elastically engaged with the edge of the opening on the back face side.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a flat handle used on the door panel of an equipment storage cabinet that stores various types of equipment such as servers, distribution boards, and control panels, and in particular to a flat handle that can be easily attached with one touch to an attachment opening formed in the door panel and also has various advanced functions. [Background technology]

[0002] Conventionally, when attaching this type of flat handle to a door panel, an attachment opening for the handle case of the flat handle is formed in the door panel, and screw holes or through-holes are drilled in positions close to both ends of the attachment opening, and the handle case is embedded in the attachment opening from its back side, and then the handle case is attached to the door panel by screwing a screw from the front side of the door panel through the through-hole in the handle case into the screw hole in the door panel, or by screwing a screw from the back side of the door panel through the through-hole in the door panel into the screw hole in the handle case. Furthermore, when attaching such a flat handle, it is necessary to provide an attachment opening for the handle case in the door panel, and screw holes or through-holes close to both ends of this opening, which requires hole drilling. Na Furthermore, since the installation work is inefficient because the flat handle must be held in place from the front side of the door panel when fastening with screws, a commonly used method is to provide a front plate at the front end of the handle case whose outer edge abuts against the front of the door panel, attach a fixing block to the back side of this front plate with screws, and then sandwich the edge of the installation opening in the door panel between the front plate of the case and the fixing block and fix the flat handle by tightening the screws. Thus, the installation method using screws is the mainstream for installing this type of flat handle to a door panel. Such a flat handle and its installation method are described in Patent Document 1, etc.

[0003] However, in this type of installation method for a flat handle, screws are used to attach the handle case to the door panel, which requires the screws to be inserted into the screw holes and tightened, making the installation process quite complicated.

[0004] Therefore, the inventor of the present application has previously proposed in Patent Document 2 a flat handle that allows the handle case to be easily attached to the door panel with one touch without using screws, thereby significantly improving the installation work.

[0005] The flat handle in Document 2 comprises a handle case that has an opening on the front and a flange around the opening and is attached to a door panel, a handle lever that is installed inside the handle case, and a stopper that is rotatably attached to the back side of the handle case via a handle shaft and is operatively connected to the handle lever so that it can be engaged with and disengaged from a receiving portion such as a receiving portion on a fixed frame body such as an equipment storage cabinet by operating the handle lever.The handle case is installed by inserting it from the back side into an installation opening formed in the door panel, and the flange of the handle case is abutted against the periphery of the edge of the installation opening on the front side of the door panel to secure it.

[0006] This flat handle particularly comprises a plurality of case hook mounting recesses recessed into at least two mutually opposing surfaces that form the circumferential surface of the handle case, a pair of bearings formed on both sides of these case hook mounting recesses, a plurality of case hooks formed in a roughly top-like shape that can be fitted into these case hook mounting recesses, with a rotation center provided on one end side between both sides facing each pair of bearings, and a locking claw extending from the outer surface that is fitted into each case hook mounting recess to the other end, and rotatably supported via a shaft that spans the ends of each pair of bearings opposite the flanges, so that the locking claw can appear and disappear from each case hook mounting recess to the outside of each surface that forms the circumferential surface of the handle case, and a plurality of spring members interposed between each case hook and each case hook mounting recess and that rotate and urge each locking claw so that it can protrude from each case hook mounting recess to the outside of each surface that forms the circumferential surface of the handle case in a normal state.

[0007] In this way, when attaching the flat handle to the door panel, the handle case is inserted into the attachment opening of the door panel from the front side to the back side of the door panel, and the case hooks on the peripheral surface of the handle case are pressed by the edges of the attachment opening to sink into the case hook attachment recesses, while the attachment opening is passed from the front side to the back side of the door panel, and on the back side of the door panel, the case hooks protrude from the case hook attachment recesses to the outside of the surfaces that make up the peripheral surface of the handle case, so that on the front side of the door panel, the flanges are pressed against the periphery of the attachment opening, and on the back side of the door panel, the locking claws of each case hook are locked to the edge or periphery of the attachment opening, thereby attaching the flat handle to the door panel with a single touch.

[0008] By doing so, the handle case can be easily attached to the door panel with one touch without using screws, thereby greatly improving the installation work. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Publication No. 9-53346 [Patent Document 2] Japanese Patent Publication No. 2020-122344 Summary of the Invention [Problem to be solved by the invention]

[0010] However, in the above-mentioned conventional flat handle, a case hook mounting recess is formed in at least two mutually opposing surfaces that form the peripheral surface of the handle case, a pair of bearings is formed on both sides of these case hook mounting recesses, and a case hook is mounted in each of these case hook mounting recesses via an axis that spans between the pair of bearings, and a spring member is interposed between each case hook and each case hook mounting recess, so that each case hook is rotated and biased so that it can protrude from each case hook mounting recess outward from each surface that forms the peripheral surface of the handle case in its normal state.As a result, there is a problem that the overall number of parts is not small, and therefore the structure cannot be simplified.

[0011] The present invention solves these conventional problems, and aims to reduce the number of parts as much as possible in this type of flat handle, without compromising the ease of installation on the door, thereby simplifying the structure and reducing costs, while also improving various existing functions. [Means for solving the problem]

[0012] In order to achieve the above object, the present invention provides: a handle lever operatively connected to a handle shaft rotatably arranged on a rear surface of the handle case and mounted within the handle case so as to be rotatable up and down relative to the handle case and rotatable in a direction that rotates the handle shaft from an upright position relative to the handle case; and a stopper attached to the handle shaft on the rear side of the rear surface of the handle case so as to be rotatable together with the handle shaft, and which can be engaged with and disengaged from a receiving portion such as a receiving portion on a fixed frame body side of an equipment storage cabinet by operating the handle lever; and a flat handle in which the handle case is inserted from the rear side of the handle case into an attachment opening formed in a door panel and the flange of the handle case is abutted against the periphery of the edge of the attachment opening on the front side of the door panel, The handle case has at least two opposing peripheral surfaces, one of which has a case hook and the other has a case hook mechanism; The case hook is It is formed in a substantially U-shape from a material having elasticity or spring properties, a support portion having one end fixed to the one surface or in the vicinity thereof, raised above the one surface, and extending between the one surface and the flange; an elastic engagement portion that is folded back from the other end of the support portion and has one end that extends toward the edge of the one surface on the flange side or its vicinity, with a predetermined gap between it and the support portion; and The case hook mechanism is a hook mounting recess formed on the other surface, and a pair of bearings formed on both sides of the hook mounting recess; a hook formed in a generally top-like shape so as to be fittable within the hook mounting recess, with a rotation center provided at one end side facing the back surface of the handle case between both sides facing the pair of bearings, with a locking claw extending from its outer surface that is fitted and arranged to the outside and the other end side thereof, and rotatably supported via a shaft that spans between the one ends of the pair of bearings that are facing the back surface of the handle case, with the locking claw being arranged so as to be able to appear and disappear from the hook mounting recess to the outside of the other surface; a spring member interposed between the hook and the hook mounting recess and urging the locking claw to rotate so as to protrude from the hook mounting recess to the outside of the other surface in a normal state; and When attaching the flat handle to the door panel, the handle case is inserted from the rear side into the attachment opening of the door panel together with the case hook on one side from the front side to the rear side of the door panel, and the hook of the case hook mechanism on the other side is pressed by the edge of the attachment opening to be immersed in the hook attachment recess, and the attachment opening is passed from the front side to the rear side of the door panel, so that the locking claw of the hook on the rear side of the door panel protrudes from the hook attachment recess to the outside of the other side, thereby pressing the flange against the periphery of the edge of the attachment opening on the front side of the door panel, and elastically engaging the elastic engagement portion of the case hook and the locking claw of the hook of the case hook mechanism on the rear side of the door panel with the edge or periphery of the edge of the attachment opening, respectively, thereby attaching the flat handle to the door panel with a single touch. The gist of this is as follows.

[0013] In this case, it is desirable that the case hook has a support portion that rises from the end side closest to the flange on one side and extends diagonally midway between the one side and the flange, and that the case hook is folded back in an approximately U-shape from the other end so that the elastic engagement portion extends parallel to the support portion with a predetermined gap between it and the support portion, and one end of the elastic engagement portion is positioned close to the intersection of the one side and the flange. [Effects of the Invention]

[0014] The flat handle of the present invention, with the above-described configuration, exhibits the following unique and special effects. That is, in this flat handle, a case hook is provided on one of at least two mutually opposing surfaces that form the periphery of the handle case, and a case hook mechanism is provided on the other surface. When attaching the flat handle to a door panel, the handle case is inserted from the rear side together with the case hook on one surface into the attachment opening of the door panel from the front side to the rear side of the door panel, and the hook of the case hook mechanism on the other surface is pressed by the edge of the attachment opening to sink into the hook attachment recess, while the attachment opening is passed from the front side to the rear side of the door panel, and the locking claw of the hook on the rear side of the door panel protrudes from the hook attachment recess to the outside of the other surface, so that the flange on the front side of the door panel is pressed against the periphery of the edge of the attachment opening, and on the rear side of the door panel, the elastic engagement portion of the case hook and the locking claw of the hook of the case hook mechanism are elastically engaged with the edge or periphery of the edge of the attachment opening, respectively, thereby attaching the flat handle to the door panel with a single touch. By doing so, the number of parts can be reduced as much as possible without compromising the ease of installation on the door, thereby simplifying the structure and reducing costs, which is a unique and exceptional effect of the present invention. [Brief explanation of the drawings]

[0015] [Figure 1] 1A and 1B are diagrams showing the external configuration of a flat handle according to an embodiment of the present invention ((a) is a front view, (b) is a rear view, (c) is a right side view, (d) is a plan view, and (e) is a diagram of the key of the lock unit provided in this flat handle). [Figure 2] Diagram showing the internal structure of the flat handle ((a) is a side cross-sectional view, (b) is a top cross-sectional view, and (c) is a cross-sectional view of the main part on the back side) [Figure 3] A diagram showing the configuration of the handle shaft used in the flat handle and related parts ((a) is an exploded perspective view, (b) is a side cross-sectional view, and (c) is a plan view). [Figure 4]1A and 1B are diagrams showing the configuration of a locking member receiving portion attached to a handle case of the flat handle ((a) is a front view, (b) is a side view, (c) is a rear view, (d) is a plan view, and (e) is a side cross-sectional view). [Figure 5] A diagram showing the configuration of the end cover and case hook mechanism used in the flat handle ((a) is a rear view, and (b) is a plan cross-sectional view) [Figure 6] A diagram showing the configuration of the case hook provided on the handle case of the same flat handle ((a) is a side view, and (b) is a rear view) [Figure 7] A diagram showing the configuration of the hook of the case hook mechanism provided on the handle case of the same flat handle ((a) is a side view, (b) is a side cross-sectional view, and (c) is a view of the inside) [Figure 8] A diagram showing the configuration of the handle lever of the same flat handle ((a1) is a side view, (a2) is a side cross-sectional view, (b1) is a plan view, (b2) is a plan cross-sectional view, (c) is a back view, and (d) is a bottom view). [Figure 9] A diagram showing the configuration of the lock unit case used with the same flat handle ((a) is a side view, (b) is a bottom view, and (c) is a rear view). [Figure 10] A diagram to explain the operation of the flat handle, especially the leaf spring and handle lever. DETAILED DESCRIPTION OF THE INVENTION

[0016] Next, an embodiment of the present invention will be described with reference to the drawings. Figure 1 shows the overall configuration of a flat handle.

[0017] As shown in FIG. 1, flat handle H (hereinafter sometimes simply referred to as handle H) has an opening 10 in a front part 1a and a flange 11 around the opening 10 in the front part 1a, and is equipped with: a handle case 1 which is attached to a door panel; a handle lever 2 which is operatively connected to a handle shaft 3 (see FIG. 2) which is rotatably arranged on a back part 1b of the handle case 1 and which is attached inside the handle case 1 so as to be rotatable up and down relative to the handle case 1 and so as to be rotatable in a direction which rotates the handle shaft 3 from an upright position relative to the handle case 1; and a catch 4 which is attached to the handle shaft 3 on the back side of the back part 1b of the handle case 1 so as to be rotatable together with the handle shaft 3, and which can be engaged with and disengaged from a receiving part such as a receiving part on a fixed frame body side of a cabinet for storing equipment by operating the handle lever 2. The handle case 1 is inserted from the back part 1b side of the handle case 1 into an attachment opening formed in the door panel, and the flange 11 of the handle case 1 is abutted against the periphery of the edge of the attachment opening on the front side of the door panel to fix it. While there are various shapes of clasp used for this type of flat handle, here, clasp 4 is used, which has a circular mounting end and a horizontally long, roughly rectangular flat plate shape at the other end. This clasp 4 is formed by pressing (punching) an iron or stainless steel plate into a circular, horizontally long, roughly rectangular flat plate shape at the other end, with one end being circular and the other end being horizontally long and rounded, and a rectangular (roughly square) mounting hole 40 is formed in the center of the circle at one end.

[0018] In particular, this flat handle H is provided with a case hook 12 on one of at least two mutually opposing surfaces of the four side surface portions 1c-1f that form the periphery of the handle case 1, and a case hook mechanism 15D on the other surface.

[0019] The case hook 12 is made of an elastic or springy material and formed into a substantially U-shape, with one end fixed to one surface of the handle case 1 or the vicinity thereof, a support portion 121 that stands up on the one surface and extends between the one surface and the flange 11, and an elastic engagement portion 122 that is folded back from the other end of the support portion 121 and extends toward the one surface with a predetermined gap between it and the support portion 121, and one end of the elastic engagement portion 122 is disposed on the one surface toward an edge of the flange 11 or the vicinity thereof. In particular, with this case hook 12, it is desirable that the support portion 121 stands up from an end side close to the flange 11 on one surface and extends diagonally midway between the one surface and the flange 11, and is folded back from the other end into a substantially U-shape so that the elastic engagement portion 122 extends parallel to the support portion 121 with a predetermined gap between them, and one end of the elastic engagement portion 122 is disposed close to the intersection of the one surface and the flange 11.

[0020] The case hook mechanism 15D comprises a hook mounting recess 13 recessed into the other surface of the handle case 1, and a pair of bearings 14 formed on either side of the hook mounting recess 13; a hook 15 formed in a roughly top-like shape so as to be able to fit within the hook mounting recess 13, with a rotation center provided on one end side facing the pair of bearings 14 on the back surface 1b side of the handle case 1 between both sides, and having a locking claw 15C extending from an outer surface 15d that is fitted into the hook mounting recess 13 and exposed to the outside to the other end 15f; the hook 15 rotatably supported via a shaft spanning between the one ends of the pair of bearings 14 on the back surface 1b side of the handle case 1, and arranged so that the locking claw 15C can be protruded and retracted from the hook mounting recess 13 to the outside of the other surface; and a spring member interposed between the hook 15 and the hook mounting recess 13 for rotationally biasing the locking claw 15C so that it can protrude from the hook mounting recess 13 to the outside of the other surface in a normal state.

[0021] In this way, when attaching the flat handle H to the door panel, the handle case 1 is inserted from the rear portion 1b side into the attachment opening of the door panel together with the case hook 12 on one side from the front side to the rear side of the door panel, and the hook 15 of the case hook mechanism 15D on the other side is pressed by the edge of the attachment opening to be immersed in the hook attachment recess 13, while the attachment opening is passed from the front side to the rear side of the door panel, and the locking claw 15C of the hook 15 on the rear portion 1b side of the door panel protrudes from the hook attachment recess 13 to the outside of the other surface, thereby pressing the flange 11 against the periphery of the edge of the attachment opening on the front side of the door panel, and at the rear side of the door panel, the elastic engagement portion 122 of the case hook 12 and the locking claw 15C of the hook 15 of the case hook mechanism 15D are elastically engaged with the edge or periphery of the edge of the attachment opening, respectively, and the flat handle H is attached to the door panel with a single touch.

[0022] In addition, the flat handle H also has the following features, improving various existing functions.

[0023] As shown in Figure 2, the handle shaft 3 of this flat handle H comprises a shaft body 3S, a stopper plate mounting portion 3A extending from one end face 301 of the shaft body 3S and to which a stopper plate 4 is attached, and a handle lever mounting portion 3B extending from the other end face 302 of the shaft body 3S and to which a handle lever 2 is attached.

[0024] As shown in Fig. 3, the handle lever mounting portion 3B of the handle shaft 3 comprises a bearing 31 extending in a plate shape from the other end face 302 of the shaft body 3S and having a pin insertion hole 310 penetrating between both side surfaces thereof, and a handle shaft pin 32 inserted into the pin insertion hole 310 of the bearing 31. In contrast, as shown in Fig. 2, the handle lever 2 comprises a pair of bearing portions 21 extending in a plate shape from the upper part of the back surface portion 2b and having a pin insertion hole 20 between both side surfaces thereof which communicates with the pin insertion hole 310 of the bearing 31. In this way, the handle lever 2 is mounted to the handle lever mounting portion 3B by placing the bearing portions 21 of the handle lever 2 on both sides of the bearing 31 of the handle lever mounting portion 3B, and inserting the handle shaft pin 32 between the pin insertion holes 20, 310 of the bearing 31 and the bearing portions 21. In this type, a threaded hole 311 is provided between both end faces of the bearing 31 of the handle lever mounting portion 3B, penetrating a part of the inner peripheral surface of the pin insertion hole 310, into which a setscrew s1 can be screwed. lever An engagement groove 320 is provided around the entire circumference of the intermediate portion that is inserted into the pin insertion hole 310 of the bearing 31 of the mounting portion 3B so as to be engageable with a setscrew s1 that is threaded into the threaded hole 311. In this way, the handle shaft pin 32 is inserted into the pin insertion hole 310 of the bearing 31 of the handle lever mounting portion 3B, and is fixed by engagement between the engagement groove 320 of the handle shaft pin 32 and the setscrew s1 that is threaded into the threaded hole 311 of the bearing 31 of the handle lever mounting portion 3B.

[0025] In this handle shaft 3, the handle lever attachment portion 3B includes: a bearing 31 extending in a plate shape from the other end face 302 of the shaft body 3S and having a pin insertion hole 310 penetrating between both side faces thereof; a handle shaft pin 32 inserted into the pin insertion hole 310 of the bearing 31; and a leaf spring 302B having steps 302a, 302b provided above and below the pin insertion hole 310 when the pin insertion hole 310 is oriented horizontally on the other end face 302 of the shaft body 3S, and disposed between the steps 302a, 302b and with which the handle lever 2 (back surface upper protrusion 211 described below) can elastically engage. In each of the steps 302a, 302b on the other end face 302 of the shaft body 3S, the lower step 302b is higher than the upper step 302a, and the leaf spring 302B is disposed obliquely between the upper and lower steps 302a, 302b.

[0026] In addition, in this flat handle H, as shown in Figure 2, a lock unit 6 having a keyhole 60 on the front and a cam protrusion 61 on the back, and a locking member 62 that is operatively connected to the cam protrusion 61 of the lock unit 6 and driven on the back side of the lock unit 6, are incorporated into one of the handle case 1 or the handle lever 2, and a locking device L6 is provided on the other side that has a locking member receiving portion 111 that can be engaged and disengaged with the locking member 62. The handle case 1 or the handle lever 2 has a lock unit case 25 formed separately from the handle case 1 or the handle lever 2 and including a cylindrical holding portion 25A (see FIG. 9) having an inner peripheral surface capable of holding the lock unit 6 along its outer peripheral surface, a cylindrical guide portion 25B (see FIG. 9) extending at one end of the holding portion 25A in the driving direction of the locking member 62 and having an inner peripheral surface capable of guiding the locking member 62 in that driving direction, and a boss portion 251 (see FIG. 9) protruding from the peripheral surface of the holding portion 25A and having a screw hole 250 (see FIG. 9) capable of fastening a fixing screw s2 from the outside of the holding portion 25A to the inside of the holding portion 25A; an opening 220 that exposes the keyhole 60 of the lock unit 6 formed in the lock unit case mounting part 22; a lock unit case mounting part 22 that is formed integrally with the opening 220 on the back side thereof and communicates with the opening 220, has a cylindrical shape that allows the holding part 25A of the lock unit case 25 to be inserted therein and that can engage the guide part 25B of the lock unit case 25 at its inner end, and has a groove 221 (see FIG. 8) on its peripheral surface that allows the boss part 251 of the lock unit case 25 to be inserted therein; and a lock unit case fixing part 23 that faces the end part of the groove 221 of the lock unit case mounting part 22 and is disposed at a distance from the end part 221 by the length of the boss part 251, and has a screw insertion part 230 that can communicate with the screw hole 250 of the boss part 251. In this way, the lock unit 6 is attached to the lock unit case mounting part 22 via the lock unit case 25 together with the locking member 62, and the lock unit 6 is fixed to the lock unit case mounting part 22 via the lock unit case 25. before unit case It is fixed by a fixing screw s2 that is fastened from the fixing portion 23 through the boss portion 251.

[0027] These units are embodied as follows, for example.

[0028] As shown in Figure 1, in this flat handle H, the handle case 1 is made of a metal material such as zinc die-cast or aluminum and is formed into a case shape that is vertically long and approximately rectangular overall with an opening 10 in the front part 1a, and consists of the front part 1a with the opening 10, four side parts 1c-1f (top part 1c, left and right side parts 1d, 1e, bottom part 1f), and a back part 1b.

[0029] As shown in FIG. 1, front portion 1a has a vertically elongated, generally rectangular outer shape. Opening 10 is formed within front portion 1a. The upper edge of opening 10 is semicircular, positioned a predetermined distance below the upper end of front portion 1a. The lower edge of opening 10 is generally linear in the left-right direction, positioned a predetermined distance above the lower end of front portion 1a. Each of the left and right side edges of opening 10 is generally linear in the up-down direction between the upper and lower edges of opening 10. Front portion 1a thus comprises an upper surface portion above the upper edge of opening 10, left and right side surfaces on both sides of each of the left and right side edges, and a lower surface portion below the lower edge of opening 10. In this case, as shown in FIG. 2, a catch 102 for handle lever 2 is also formed, extending from a position slightly behind the lower edge of opening 10 to rear portion 1b and having a convex, arc-shaped cross section extending toward the upper edge of opening 10. The front surface 1a is formed so that the vertical cross section is arc-shaped and the horizontal cross section is arc-shaped as a whole, and the surface has a gently curved shape.

[0030] As shown in FIG. 1, the four side surfaces 1c-1f are composed of four front side surfaces 1c1-1f1 (front upper surface 1c1, front left and right side surfaces 1d1, 1e1, front lower surface 1f1) that are continuous with the respective portions of the front surface 1a and extend toward the rear surface 1b, and four rear side surfaces 1c2-1f2 (rear upper surface 1c2, rear left and right side surfaces 1d2, 1e2, rear lower surface 1f2) that extend toward the rear surface 1b more inward than the respective portions of the front side surfaces 1c1-1f1 via step portions 11 on the front side surfaces 1c1-1f1. The step portions 11 are formed flat between the four front side surfaces 1c1-1f1 and the four rear side surfaces 1c2-1f2, and these step portions 11 form flanges (hereinafter referred to as flanges 11) of the handle case H.

[0031] In this case, the front upper surface portion 1c1 and the front lower surface portion 1f1 of the four front side surface portions 1c1-1f1 are each formed into a horizontally elongated, approximately trapezoidal shape, and the front left and right side surface portions 1d1, 1e1 are each formed into a vertically elongated, approximately trapezoidal shape. Furthermore, the lower portions of the front left and right side surface portions 1d1, 1e1 are each formed into a curved cutout from the left and right side surface portions of the front portion 1a toward the back portion 1b, each large enough for the tips of fingers (e.g., thumb and index finger) to pass through, thereby providing recesses 1d0, 1e0. The rear upper surface portion 1c2 and the rear lower surface portion 1f2 of the four back side surface portions 1c2-1f2 are each formed into a horizontally elongated, approximately rectangular shape, and the rear left and right side surface portions 1d2, 1e2 are each formed into a vertically elongated, approximately rectangular shape. In the case of this handle case 1, a rotation direction restricting portion 303 (see Figure 2) that restricts the rotation of the handle lever 2 clockwise or counterclockwise is provided on the handle shaft 3 inserted into the shaft tube portion 101 of the handle case 1, so that the upper surface portion 1c2 of the back side 4 side portion 1c2-1f2 consists of three surfaces, consisting of a central surface that is a horizontally long rectangle and forms a horizontal plane, and left and right surfaces on both sides of the central surface that are vertically long rectangles and form downward inclined surfaces at an angle of approximately 45°, and each of the left and right surfaces has a screw hole 1c0 formed therethrough in a direction perpendicular to the surface.

[0032] Thus, the four front side surface portions 1c1-1f1 protrude outward relative to the four back side surface portions 1c2-1f2, and each of the four front side surface portions 1c1-1f1 is formed gradually outward from the front surface portion 1a toward the back surface portion 1b, while each of the four back side surface portions 1c2-1f2 is formed straight from the front surface portion 1a toward the back surface portion 1b. In other words, each of the four front side surface portions 1c1-1f1 extends diagonally outward relative to the front surface portion 1a, and each of the four back side surface portions 1c2-1f2 extends perpendicular to the front surface portion 1a.

[0033] In this case, the step portion between the four front side surface portions 1c1-1f1 and the four rear side surface portions 1c2-1f2, i.e., flange 11, is planar and includes an upper flange 11c between the front upper surface portion 1c1 and the rear upper surface portion 1c2, left and right side flanges 11d and 11e between the front left and right side surface portions 1d1 and 1e1 and the rear left and right side surface portions 1d2 and 1e2, and a lower flange 11f between the front lower surface portion 1f1 and the rear lower surface portion 1f2. As shown in FIG. 2, upper flange 11c includes a rectangular frame-like portion formed on the rear portion 1b side of the upper surface of front portion 1a and an opening on its inner side. In this case, the upper surface of the front portion 1a on the side of the rear portion 1b is formed into a rectangular cylindrical shape with a horizontally long vertical cross section, and is hollow inside. It is made up of a front-side upper surface 1c1, front-side left and right side surfaces 1d1 and 1e1, and a partition 1c11 extending from the front portion 1a toward the rear portion 1b along the upper edge of the opening 10 in the front portion 1a. In other words, the upper flange 11c is made up of the rear end surface of the horizontally long rectangular frame-like portion and the opening surface of the hollow portion inside. The partition 1c11 extending from the front portion 1a toward the rear portion 1b is provided with a screw hole 1c10 that opens at the rear portion 1b and extends from the rear portion 1b toward the front portion 1a. In this handle case 1, the partition 1c11 serves as a fixing portion for the case hook 12, which will be described later. The left and right side flanges 11d and 11e are formed on the end surfaces of the rear portion 1b of the front left and right side portions 1d1 and 1e1 of the four front side side portions 1c1-1f1. The lower flange 11f is a flat plate formed on the rear portion 1b side of the lower surface of the front portion 1a.

[0034] As shown in FIG. 1, the rear portion 1b is made of a vertically long, substantially rectangular flat plate that is smaller than the front portion 1a and is continuous with the four rear side side portions 1c2-1f2 of the four side portions 1c-1f.

[0035] A shaft tube portion 101 is provided at the top of this back surface portion 1b so that the handle shaft 3 can be inserted therein, and a receiving seat 102 is provided at the bottom so that the lower end of the handle lever 2 can abut against it. In this case, the shaft tube portion 101 is formed at the top of the back surface portion 1b concentrically with the back surface portion 1b, corresponding to the position that is the center of the semicircular circle that forms the upper edge of the opening 10 in the front surface portion 1a, and is cylindrically shaped so that the shaft main body 3S of the handle shaft 3 can be inserted thereinto and protrudes to the inside and outside of the back surface portion 1b. 2, the catch 102 is composed of a flat portion 102a extending substantially horizontally from the lower edge of the opening 10 in the front portion 1a to a position slightly further back (towards the rear portion), and a stepped portion 102b extending in an arc shape in vertical cross section between a position slightly further back (towards the rear portion) from the lower edge of the opening 10 in the front portion 1a (the rear end of the flat portion 102a) and a position slightly above the lower edge of the opening 10 in the front portion 1a on the lower side of the rear portion 1b. A boss 103 having a screw hole 103s is provided on the rear side of the stepped portion 102b, close to the flat portion 102a, and projects up to the same plane as the front of the rear portion 1b. A mounting screw s3 is provided in this boss 103.

[0036] In addition, as shown in FIG. 2, the rear surface portion 1b is also provided with a locking member receiving portion 111, which is part of the locking device L6, at the center in the vertical direction and is capable of engaging with the locking member 62, which is part of the locking device L6, described above.

[0037] The lower part of the back part 1b and directly above the catch 102 is an accommodation part for the lock unit case attachment part 22, which can be fitted with the lock unit case attachment part 22 of the handle lever 2, which will be described later, and a locking member receiving part attachment part 111P is provided adjacent to the upper part of this accommodation part, and a plurality of screw insertion holes 1110 are formed in this locking member receiving part attachment part 111P. In this case, two screw insertion holes 1110 are drilled in parallel in the width direction in the locking member receiving part attachment part 111P.

[0038] As shown in Fig. 4, the locking member receiving portion 111 is formed separately from the back portion 1b of the handle case 1 and is detachably attached to the locking member receiving portion attachment portion 111P of the back portion 1b. The locking member receiving portion 111 is a generally truncated pyramidal block having a width slightly smaller than that of the back portion 1b, a thickness smaller than the width, and a length that protrudes slightly from the back portion 1b of the handle case 1 toward the front portion 1a beyond the position of the flange 11. One side serving as the bottom surface is formed with an L-shaped cross section, and this side surface is provided with a locking surface 1111 that can engage with a locking member 62 of the locking device L6 (described later), and one end surface serving as the rear surface is provided with a plurality of screw holes 1112. In this case, one of the larger of the four oblique side surfaces of the locking member receiving portion 111 serves as the bottom surface, and half of the rear side of this side surface is cut out to have an L-shaped cross section, with the vertical surface forming the locking surface 1111. Furthermore, one of the larger end faces of locking member receiving portion 111 is the rear face, and two screw holes 1112 are provided side by side in the width direction on this end face. This locking member receiving portion 111 has its lower face facing the receiving seat 102 at the bottom of the back face portion 1b and its rear face facing the locking member receiving portion mounting portion 111P on the back face portion 1b, and is mounted by fastening two mounting screws s4 from each screw insertion hole 1110 on the back face portion 1b into each screw hole 1112 of the locking member receiving portion 111. With this mounting, the engaging surface 1111 of the locking member receiving portion 111 faces the back face portion 1b and protrudes downward.

[0039] As shown in FIG. 1, the handle case 1 has an opening A0 formed therein, which extends from the lower part of the rear part 1b to the rear lower surface part 1f2 of the rear side four side parts 1c2-1f2, and further to the lower flange 11f, and an end cover A1 is fitted and fixed into this opening A0.

[0040] The opening A0 consists of an opening A01 in the back surface 1b, which is formed on the lower side of the back surface 1b in a roughly rectangular shape that is long in the vertical direction from the center of the width of the lower edge to the upper edge, an opening A02 in the back surface lower surface 1f2, which is continuous with this opening A01 and is formed in a roughly rectangular shape that is long in the horizontal direction at the center of the width of the back surface lower surface 1f2 of the back side four side surface portion 1c2-1f2, and an opening A03 in the lower flange 11f, which is continuous with this opening A02 and is formed in a roughly rectangular shape that is long in the horizontal direction at the center of the width of the lower flange 11f.

[0041] As shown in FIG. 5, the end cover A1 corresponds to each portion of the opening A0 and comprises: a flat plate portion A11 of the rear portion 1b that is elongated in the vertical direction and is approximately rectangular so as to be able to fit into the opening A01 of the rear portion 1b; a flat plate portion A12 of the rear-side lower surface portion 1f2 that is continuous with the lower end of the flat plate portion A11 and is formed in an approximately rectangular shape so as to be elongated in the horizontal direction and is able to fit into the opening A02 of the rear-side lower surface portion 1f2; and a flat plate portion A13 of the lower flange 11f that is continuous with the lower end of the flat plate portion A12 and is formed in an approximately rectangular shape so as to be elongated in the vertical direction and is able to fit into the opening A03 of the lower flange 11f. A screw insertion hole A110 is formed in the flat plate portion A11 of the rear portion 1b opposite the boss 103 of the step portion 102b of the rear portion 1b, and a trapezoidal support portion A131 is formed in the vertical center on the front side of the flat plate portion A13 of the lower flange 11f so as to be able to abut against the back surface of the lower surface portion of the front portion 1a. In this way, each part of the end cover A1 is fitted into each part of the opening A0, the screw insertion hole A110 of the flat portion A11 of the rear portion 1b of the end cover A1 and the screw hole 103s of the boss 103 of the step portion 102b of the rear portion 1b face each other and are supported and connected to the boss 103, the support portion A131 of the flat portion A13 of the lower flange 11f of the end cover A1 abuts against the rear surface of the underside of the front portion 1a and is supported, and the mounting screw s3 is fastened from the screw insertion hole A110 of the flat portion A11 of the rear portion 1b to the screw hole 103s of the boss 103 of the step portion 102b of the rear portion 1b, and the end cover A1 is fixed to the lower part of the rear side of the handle case 1.

[0042] In this way, the handle case 1 is attached to the door panel by inserting the rear portion 1b of the handle case 1 (in this case, from the rear portion 1b to the four rear side portions 1c2-1f2) into the attachment opening formed in the door panel, and the flange 11 of the handle case 1 abuts against the periphery of the edge of the attachment opening on the front side of the door panel. To secure this attachment, the handle case 1 is provided with a case hook 12 on one of at least two mutually opposing surfaces of the four side portions 1c-1f that form its periphery, and a case hook mechanism 15D on the other.

[0043] 1 and 2, the case hooks 12 are provided on the upper surface 1c2 on the rear side of the four side surfaces 1c-1f of the handle case 1. The case hooks 12 are integrally formed from a synthetic resin material such as polyamide resin, and are realized by a central attachment portion 12A and a pair of left and right hooks 12B, as shown in FIG.

[0044] 6, central mounting portion 12A has base 12a1 having a generally rectangular cross section elongated in the left-right direction, and base extension 12a2 extending upward from the center of the upper surface of base 12a1. The generally lower half of base extension 12a2 extends from between the front and rear edges of base 12a1 by a predetermined width to the center of the upper surface of base 12a1, with the front and rear surfaces being flat surfaces integrated with the front and rear surfaces of base 12a1. The generally upper half extends from the generally lower half into a generally quadrangular pyramid-shaped cross section with the rear surface being flat and integrated with the rear surface of base 12a1, resulting in a generally right-angled triangular side cross section. The rear surface is flat and integrated with base 12a1 and the rear surface of the generally lower half of base extension 12a2, and the front surface is an inclined surface extending obliquely upward from the front surface of the generally lower half toward the rear surface. The underside of the base 12a1 forms a seat, and is concave with three sides, i.e., a horizontally long rectangular central surface and vertically long rectangular surfaces on either side of the central surface that are inclined downward at an angle of approximately 45°, so that the underside of the base 12a1 can straddle and sit along the three surfaces of the upper surface 1c2 on the rear side of the handle case 1. A screw insertion hole 12a3 is formed between the center between the front and rear of the base 12a1 and the base extension 12a2.

[0045] Each of the left and right hooks 12B is integrally formed symmetrically on the left and right ends of the upper surface of the base 12a1, and has a support portion 121 whose one end is continuous with the upper surface of the base 12a1 and is raised above the upper surface of the base 12a1, and extends diagonally upward from the upper surface of the base 12a1 toward the back side of the base 12a1, and an elastic engagement portion 122 that is folded back from the other end of the support portion 121 and whose one end extends toward the upper surface of the base 12a1 with a predetermined gap between it and the support portion 121. In this case, in particular, support portion 121 is raised from the rear end on the upper surface of base 12a1 and extends diagonally upward and outward from the upper surface of base 12a1 relative to the rear surface of base 12a1, and is folded back from the other end in an approximately U-shape so that elastic engagement portion 122 extends parallel to support portion 121 above support portion 121 with a predetermined gap between it and support portion 121, and one end of elastic engagement portion 122 is positioned protruding slightly outward from this end at a position close to the front end on the upper surface of base 12a1 (in other words, so as to be able to enter slightly into the opening surface of upper flange 11c).

[0046] In this way, the case hook 12 is aligned with the back surface of the partition 1c11, which forms part of the upper flange 11c, near the back side upper surface 1c of the four side surfaces 1c-1f of the handle case 1, with the front of the mounting portion 12A (base 12a1 and base extension 12a2) aligned with the back surface of the partition 1c11, which forms part of the upper flange 11c, and a screw s is inserted into the screw insertion hole 12a3 of the mounting portion 12A and fastened to the screw hole 1c10 of the partition 1c11, so that the case hook 12 is provided on the back side upper surface 1c2 of the four side surfaces 1c-1f of the handle case 1. Thus, each of the left and right hooks 12B is elastic or springy and formed in an approximately U-shape, with one end fixed near the rear upper surface portion 1c2 (partition portion 1c11 forming part of the upper flange 11c), raised above the rear upper surface portion 1c2, and comprising a support portion 121 extending between the rear upper surface portion 1c2 and the upper flange 11c, and an elastic engagement portion 122 folded back from the other end of the support portion 121 and one end extending toward the edge of the rear upper surface portion 1c2 on the flange 11 side with a predetermined gap between it and the support portion 121. In particular, in this case hook 12, the support portion 121 is raised from the end side of the rear side upper surface portion 1c2 that is close to the upper flange 11c, extends diagonally to the middle between the rear side upper surface portion 1c2 and the upper flange 11c, and is folded back at the other end into an approximately U-shape, with the elastic engagement portion 122 extending parallel to the support portion 121 with a predetermined gap between it and the support portion 121, and one end of the elastic engagement portion 122 is positioned close to the intersection of the rear side upper surface portion 1c2 and the flange 11.

[0047] As shown in Fig. 1, the case hook mechanism 15D is provided on the rear lower surface 1f2 of each of the four side surface portions 1c-1f of the handle case 1. As shown in Fig. 2, this case hook mechanism 15D is provided on the end cover A1 of the handle case 1, and is realized in this end cover A1 by a hook mounting recess 13, a pair of bearings 14, a hook 15, a shaft 16, and a spring member 17, as shown in Fig. 5.

[0048] As shown in Fig. 1, the hook mounting recess 13 is recessed in the rear lower surface 1f2 of the four rear side surfaces 1c2-1f2 of the handle case 1. In this case, an opening A0 is formed continuously from the lower part of the rear portion 1b of the handle case 1 to the rear lower surface 1f2 of the four rear side surfaces 1c2-1f2 and further to the lower flange 11f, and an end cover A1 is fitted and fixed into this opening A0. As shown in Fig. 5, the hook mounting recess 13 is formed in a U-shape in rear view between the flat plate portion A12 of the rear lower surface 1f2 of the end cover A1, which is fitted into the opening A02 of the rear lower surface 1f2. Square flat plates protrude parallel to each other from both the front and rear ends of this flat plate portion A12. A shaft hole 140 is formed in the rear end of each of these flat plates, and each flat plate forms a pair of bearings 14. Additionally, a spring receiving portion 130 is formed in the center of the outer surface of this flat plate portion A12 in the shape of a circular recess.

[0049] As shown in Fig. 5, the hook 15 is formed in a generally top-like shape so as to be able to fit into the hook mounting recess 13. As shown in Fig. 7, the hook 15 has a rotation center C1 at one end located on the rear surface 1b side of the handle case 1 between both sides facing the pair of bearings 14, and a locking claw 15C extends from an outer surface 15d that is fitted into the hook mounting recess 13 and appears to the outside to the other end 15f. In this way, the hook 15 is rotatably supported in the end cover A1 via a shaft 16 that spans between the ends of the pair of bearings 14 on the rear surface 1b side of the handle case 1, and the locking claw 15C is arranged so as to be able to appear and disappear from the hook mounting recess 13 to the outside of the flat plate portion A12 of the rear surface 1f2 of the handle case 1, in this case, the flat plate portion A12 of the rear surface 1f2 of the end cover A1.

[0050] 7, the hook 15 has a shaft insertion portion 150 provided with a pivot center C1 between both side surface portions 15b, 15c at one end 15a serving as the pivot support side, and the opposite end 15f is formed in an arc shape with the center of the circle located closer to the one end 15a than the pivot center C1 and closer to the inner surface 15e opposite the outer surface 15d. The outer surface 15d of the hook 15 is formed substantially parallel to the rear lower surface 1f2 of the handle case 1. The one end 15a, i.e., the portion between one end of the outer surface 15d and one end of the inner surface 15e, is formed in a convex shape with a substantially V-shaped cross section, with one surface continuing to the outer surface 15d having a predetermined arcuate shape and the other surface continuing to the inner surface 15e having a predetermined angle. The inner surface 15e is formed symmetrically with the outer surface 15d, parallel to the outer surface 15d or in a direction slightly wider than parallel, in this case, in a direction slightly wider than parallel. The outer surface 15d and the inner surface 15e of the hook 15 are rectangular surfaces that are slightly longer in both the front and rear directions, and each of the left and right side surface portions 15b, 15c has a compound-shaped surface in which one end portion 15a, which is the rear end, is approximately V-shaped in cross section and extends in an approximately rectangular shape that is long in both the front and rear directions, and the other end portion 15f, which is the front end, is also a rectangular surface that is long in both the left and right directions.

[0051] In this way, as shown in Figure 5, the hook 15 is supported in the hook mounting recess 13 of the flat portion A12 of the rear lower surface portion 1f2 of the end cover A1 via a shaft 16, in this case a stainless steel spring pin, which is inserted between the shaft holes 140 of each of the left and right bearings 14 and the shaft insertion portion 150 of the hook 15, and each locking claw 15C is positioned so that it can appear and disappear from the hook mounting recess 13 to the outside of the rear lower surface portion 1f2 of the handle case 1 (outside the opening surface of the hook mounting recess 13).

[0052] In this case, a coil spring (hereinafter referred to as coil spring 17) is used as spring member 17 as described below, and therefore, as shown in Figure 7, a bottomed (cylindrical) hole 152 is formed on the inner surface 15e of hook 15, and coil spring 17 is held at one end in hole 152 of hook 15 and at the other end in the bottom (spring receiving portion 130) of hook mounting recess 13, and is interposed between hook 15 and hook mounting recess 13. Here, the hole 152 of the hook 15 is formed at a predetermined angle with respect to the inner surface 15e of the hook 15 so that when the locking claw 15C of the hook 15 protrudes from the lower surface 1f2 of the back side of the handle case 1 through the hook mounting recess 13 before or after the handle case 1 together with the hook 15 is passed through the mounting opening of the door panel, the coil spring 17 can be deformed and guided into a convex arc shape toward the flange 11, and a part of the inner surface of the hole 152 on one end 15a side of the hook 15 is formed with an inclination at a predetermined angle that gradually widens in diameter from the back side of the hole 152 toward the opening side so that the coil spring 17 can be deformed and guided into a convex arc shape toward the opposite side to the flange 11 when the locking claw 15C of the hook 15 is immersed in the hook mounting recess 13 while the handle case 1 together with the hook 15 is passed through the mounting opening of the door panel.

[0053] 5, as described above, the spring member 17 is a coil spring 17 that is interposed between the hook 15 and the hook mounting recess 13 and that urges the hook's locking claw 15C to rotate so as to protrude from the hook mounting recess 13 to the outside of the backside lower surface 1f2 of the handle case 1 (outside the opening of the hook mounting recess 13) in a normal state. In this case, one end of the coil spring 17 is attached to the spring receiving portion 130 of the hook mounting recess 13 and the other end is attached to a spring receiving portion at the bottom of the hole 152 of the hook 15. The coil spring 17 is interposed between the hook 15 and the hook mounting recess 13 and urges the hook 15C to rotate so as to protrude from the hook mounting recess 13 to the outside of the backside lower surface 1f2 of the handle case 1 in a normal state.

[0054] In this way, the handle case 1 is inserted from the back portion 1b to the back side of the door panel by inserting the four back side side portions 1c2-1f2 together with the case hooks 12 on the back side upper surface portion 1c2 into the mounting opening of the door panel from the front side to the back side of the door panel, and while the hooks 15 of the case hook mechanism 15D on the back side lower surface portion 1f2 of the four back side side portions 1c2-1f2 are pressed by the edge of the mounting opening and immersed in the hook mounting recesses 13, the mounting opening is passed from the front side to the back side of the door panel, and the locking claws 15C of the hooks 15 on the back side of the door panel protrude from the hook mounting recesses 13 to the outside of the back side lower surface portion 1f2, thereby pressing the flange 11 against the periphery of the edge of the mounting opening on the front side of the door panel, and at the back side of the door panel, the elastic engaging portions 122 of the case hooks 12 and the locking claws 15C of the hooks 15 of the case hook mechanism 15D are each elastically engaged with the edge of the mounting opening, and the handle case 1 can be mounted to the door panel with one touch.

[0055] The handle case 1 is constructed in this manner, and as shown in Figures 1 and 2, the handle shaft 3 is inserted into the shaft tube portion 101 at the top of the back portion 1b, with a stopper plate 4 attached to one end and the handle lever 2 attached to the other end.

[0056] As shown in FIG. 3, the handle shaft 3 comprises a cylindrical shaft body 3S rotatably fitted in the shaft tube portion 101 of the handle case 1, a catch plate attachment portion 3A protruding from one end surface 301 of the shaft body 3S, and a handle plate protruding from the other end surface 302 of the shaft body 3S. lever and a mounting portion 3B.

[0057] The shaft body 3S is formed in a cylindrical shape with approximately the same diameter and length as the inner diameter and length of the shaft tube portion 101 so that it can be fitted into the shaft tube portion 101, and a groove is formed on part of the outer circumferential surface so that an O-ring can be fitted thereto. As described above, the handle shaft 3 is also provided with a rotation direction restricting portion 303 that restricts the rotation of the handle lever 2 in a clockwise or counterclockwise direction. The rotation direction restricting portion 303 consists of guide grooves 303a formed on the outer circumferential surface of the shaft body 3S of the handle shaft 3 at predetermined angular intervals from the axial center of the shaft body 3S, and guide pins 303b (see FIG. 2) that are fixed to the shaft tube portion 101 of the handle case 1 and inserted so as to be engageable with the guide grooves 303a. In this case, the guide grooves 303a are formed on the top surface of the shaft body 3S in the center in the front-to-rear direction at intervals of 90° from the axial center of the shaft body 3S. A screw such as a flat head screw is used for guide pin 303b, and this screw is fastened to one of threaded holes 1c0 provided on each of the left and right surfaces of the top surface of shaft cylinder portion 101 of handle case 1, and this serves as guide pin 303b, which is inserted into and engaged with one end of guide groove 303a. In this way, guide groove 303a and guide pin 303b regulate the rotational direction of shaft body 3S. That is, by fastening this screw (guide pin 303b) into the threaded hole on the left side of the shaft tube portion 101 and inserting and engaging the screw (guide pin 303b) into the left end of the guide groove 303a of the shaft body 101, the clockwise rotation of the shaft body 3S is restricted and the shaft body 3S is guided to rotate counterclockwise, and by fastening the screw (guide pin 303b) into the threaded hole on the right side of the shaft tube portion 101 and inserting and engaging the screw (guide pin 303b) into the right end of the guide groove 303a of the shaft body 3S, the counterclockwise rotation of the shaft body 3S is restricted and the shaft body 3S is guided to rotate clockwise.

[0058] As shown in Figure 3, the clasp mounting portion 3A has a basic rectangular shape on one end side of the handle shaft 3, in this case a square cross section, and is formed to a predetermined length, and is configured with two clasp hook mounting recesses 33, two pairs of bearings 34, two clasp hooks 35, and one or two spring members 37 at one rectangular end of the handle shaft 3.

[0059] The two catch hook mounting recesses 33 are recessed into two opposing surfaces of the circumferential surface of one end of the handle shaft 3. In this case, each catch hook mounting recess 33 is recessed with one end face open at two locations, one at the top and one at the bottom, i.e., at the center of the width direction of the upper and lower surfaces of one end of the handle shaft 3. In this case, the space between the upper and lower catch hook mounting recesses 33 at one end of the handle shaft 3 forms the bottom, and a spring insertion hole 330 is formed on the shaft body 3S side of this bottom.

[0060] Two pairs of bearings 34 are formed on both sides of the upper and lower catch hook mounting recesses 33. In this case, a pair of bearings 34 is formed on both the left and right sides of the upper and lower catch hook mounting recesses 33 at one end of the handle shaft 3, and a shaft insertion portion 340 is formed on one end side of each of the left and right bearings 34 (one end face side of the catch mounting portion 3A) so as to penetrate between the inner and outer surfaces of each bearing 34.

[0061] Each of the two catch hooks 35 has the same basic configuration as the hooks 15 of the case hook mechanism 15D described above, and is formed in a roughly top-like shape so as to be able to fit within each catch hook mounting recess 33. A rotation center is provided on one end side between both side portions facing each pair of bearings 34, and a locking claw 35C is formed from the outer surface that is fitted into each catch hook mounting recess 33 and is exposed to the outside to the other end. The two catch hooks 35 are rotatably supported via two shafts 36 that are bridged in parallel above and below between the shaft insertion portions 340 of each pair of bearings 34, and each catch claw 35C is arranged so as to be able to appear and disappear from the catch hook mounting recess 33 to the outside of the upper surface and lower surface of one end of the handle shaft 3.

[0062] In this case, each catch hook 35 has a shaft insertion portion provided as a rotation center between both sides of one end portion of the catch hook 35, which is the support side. The opposite end portion is formed in an arc shape with the center of the circle located closer to the one end portion of the one end portion than the rotation center and closer to the inner surface on the opposite side from the outer surface. Each catch hook 35 has an outer surface formed approximately parallel to the upper and lower surfaces of one end of the handle shaft 3. One end portion, i.e., between one end of the outer surface and one end of the inner surface, is formed in a convex shape with a substantially V-shaped cross section, with one surface continuing to the outer surface being a predetermined arc-shaped surface, and the other surface continuing to the inner surface being an inclined surface at a predetermined angle. The inner surface is formed symmetrically to the outer surface, parallel to the outer surface or in a direction slightly apart from parallel, in this case, in a direction slightly apart from parallel. The outer and inner surfaces of each clasp hook 35 are rectangular surfaces that are slightly longer in both the front and rear directions, and each of the left and right side surfaces has a compound-shaped surface in which one end 15a, which is the rear end, has an approximately V-shaped cross section and extends in an approximately rectangular shape that is longer in both the front and rear directions, and the other end, which is the front end, has a rectangular surface that is longer in both the left and right directions.

[0063] In this way, the upper and lower catch hooks 35 are journaled in the upper and lower catch hook mounting recesses 33 via shafts 36 (in this case, stainless steel spring pins) that are inserted between the shaft insertion portions 340 of the left and right bearings 34 and the shaft insertion portions of the catch hooks 35, and the locking claws 35C are arranged so as to be able to protrude and retract from the catch hook mounting recesses 33 to the outside of the upper and lower surfaces of one end of the handle shaft 3. In this case, since a coil spring (hereinafter referred to as coil spring 37) is used as the spring member 37 as described below, a cylindrical hole with a bottom is formed on the inner surface of each catch hook 35, and both ends of the coil spring 37 are held in the holes of the catch hooks 35 and are interposed between the catch hooks 35. The holes of each catch hook 35 are formed at a predetermined angle with respect to the inner surface of each catch hook 35 so that when each locking claw 35C of each catch hook 35 protrudes from each catch hook mounting recess 33 to the outside of the upper and lower surfaces of one end of the handle shaft 3 before or after one end of the handle shaft 3 is passed together with each catch hook 35 through the mounting hole 40 of the catch 4, the coil spring 37 can be deformed and guided into a convex arc shape toward the flange 11 of the handle case 1.Furthermore, parts of the inner circumferential surfaces on one end side and the other end side of each catch hook 35 of the hole of each catch hook 35 are formed with an inclination at a predetermined angle that gradually increases in diameter from the back side of the hole toward the opening side so that when each locking claw 35C of each catch hook 35 is sunk into each catch hook mounting recess 33 while one end of the handle shaft 3 is passed together with each catch hook 35 through the mounting hole 40 of the catch 4, the coil spring 37 can be deformed and guided into a convex arc shape toward the opposite side of the flange 11 of the handle case 1.

[0064] The coil spring 37 is interposed between the upper and lower catch hooks 35, with one end attached to the bottom of the hole of the catch hook 35 in the upper catch hook mounting recess 33 through a spring through-hole 330 between each catch hook mounting recess 33 at one end of the handle shaft 3, and the other end attached to the bottom of the hole of the catch hook 35 in the lower catch hook mounting recess 33, and the locking claws 35C of each catch hook 35 are normally urged to rotate and protrude from each catch hook mounting recess 33 to the outside of the upper and lower surfaces of one end of the handle shaft 3.

[0065] Here, spring through-holes 330 are provided between the catch hook mounting recesses 33, and one coil spring 37 passes through the catch hook mounting recesses 33 and is interposed between the catch hooks 35, so as to rotatably bias the locking pawls 35C in a normal state so as to protrude from the catch hook mounting recesses 33 outwardly toward the upper and lower surfaces of one end of the handle shaft 3. However, the spring through-holes 330 do not have to be provided between the catch hook mounting recesses 33, and in this case, two coil springs 37 may be interposed between the catch hooks 35 and the catch hook mounting recesses 33, so as to rotatably bias the locking pawls 35C in a normal state so as to protrude from the catch hook mounting recesses 33 outwardly toward the upper and lower surfaces of one end of the handle shaft 3. This also achieves the same effects.

[0066] The catch plate 4 is attached to the catch plate mounting portion 3A at the tip of the handle shaft 3 as follows: First, the catch plate mounting portion 3A of the handle shaft 3 is inserted into the mounting hole 40 of the catch plate 4 from the front side to the rear side of the catch plate 4, and each catch hook 35 at one end of the catch plate mounting portion 3A is pressed by the edge of the mounting hole 40 of the catch plate 4 to be inserted into each catch hook mounting recess 33, and then the catch plate 4 is passed through the mounting hole 40 from the front side to the rear side of the catch plate 4. Then, on the rear side of the catch plate 4, each catch hook 35 protrudes outward from the upper and lower surfaces of one end of the handle shaft 3. As a result, the front side of the catch plate 4 presses against the rear surface of the handle case 1 (in this case, the rear opening end of the shaft tube portion 101) around the edge of the mounting hole 40, and the locking claws 35C of each catch plate hook 35 are engaged with the edge or around the edge of the mounting hole 40 on the rear side of the catch plate 4, thereby attaching the catch plate 4 to the handle shaft 3. By providing such a catch plate attachment portion 3A, the catch plate 4 can be easily and reliably attached to the handle shaft 3 with a single touch.

[0067] 3, the handle lever mounting portion 3B comprises a bearing 31 extending in a plate shape from the other end surface 302 of the shaft body 3S of the handle shaft 3 and having a pin insertion hole 310 penetrating between both side surfaces thereof, and a handle shaft pin 32 inserted into the pin insertion hole 310 of the bearing 31. In this handle lever mounting portion 3B, the handle lever 2 is provided with a pair of bearing portions 21 extending in a plate shape from the upper part of the back surface portion 2b as described below, each having a pin insertion hole 20 between both side surfaces thereof which communicates with the pin insertion hole 310 of the bearing 31, and the handle lever 2 is mounted to the handle lever mounting portion 3B by placing the bearing portions 21 of the handle lever 2 on both sides of the bearing 31 of the handle lever mounting portion 3B, and inserting the handle shaft pin 32 between the pin insertion holes 20, 310 of the bearing 31 and the bearing portions 21. In this case, the bearing 31 is formed as a relatively thick (relatively wide) plate-like protrusion from the widthwise center of the other end surface 302 of the shaft body 3S of the handle shaft 3, and one end thereof is formed in a semicircular shape. The pin insertion holes 310 are formed on both the left and right side surfaces of the bearing 31, penetrating between the diametric centers (centers of the circles) of the semicircles at one end.

[0068] Furthermore, in this handle lever mounting portion 3B, a threaded hole 311 is formed between both end faces of the bearing 31, penetrating part of the inner circumferential surface of the pin insertion hole 310 so that a setscrew s1 can be screwed in, and the handle shaft pin 32 has an engagement groove 320 around the entire circumference in an intermediate portion thereof that is inserted into the pin insertion hole 310 of the bearing 31 of the handle lever mounting portion 3B so that the engagement groove 320 can engage with the setscrew s1 that is screwed into the threaded hole 311. In this way, the handle shaft pin 32 is inserted into the pin insertion hole 310 of the bearing 31 of the handle lever mounting portion 3B, and is fixed by engagement between the engagement groove 320 of the handle shaft pin 32 and the setscrew s1 that is screwed into the threaded hole 311 of the bearing 31 of the handle lever mounting portion 3B. In this case, the threaded hole 311 is formed between the upper and lower end faces of the bearing 31 and adjacent to the rear of the pin insertion hole 310, at a position where part of the threaded hole 311 passes through the pin insertion hole 310, penetrating between the upper and lower end faces of the bearing 31 parallel to the diameter line of the semicircle at one end. In this way, the handle shaft pin 32 is inserted into the pin insertion hole 310 of the bearing 31 of the handle lever attachment part 3B, and a setscrew s1 is threaded into the threaded hole 311 of the bearing 31 of the handle lever attachment part 3B. This setscrew s1 engages with the locking groove 320 of the handle shaft pin 32, preventing the handle shaft pin 32 from coming out and allowing it to be rotatably attached to the pin insertion hole 310 of the bearing 31.

[0069] Furthermore, in this handle lever mounting portion 3B, when the bearing 31 (in the front-to-rear direction) is oriented horizontally together with the pin insertion hole 310 on the other end face 302 of the shaft body 3S of the handle shaft 3, step portions 302a, 302b are formed above and below the pin insertion hole 310 with the height of the lower step portion 302b being higher than the height of the upper step portion 302a, and a leaf spring 302B is arranged diagonally between the upper and lower step portions 302a, 302b. In this case, the upper and lower steps 302a, 302b are formed symmetrically above and below the bearing 31 at a small distance from each of the upper and lower surfaces of the bearing 31 on the other end surface 302 of the shaft body 3S of the handle shaft 3, with the front surface arched and inclined at the same appropriate angle, lower on the top and higher on the bottom, at an interval slightly larger than the width of the bearing 31, between an arc connecting two points on the circumference of the other end surface 302 and a chord, with the upper step 302a at a predetermined low height and the lower step 302b at a predetermined high height. Thus, the upper and lower steps 302a, 302b each have a predetermined height, with the lower step 302b protruding higher than the upper step 302a, and the front surfaces of the upper and lower steps 302a, 302b form an inclined surface at a predetermined angle that is continuous in the vertical direction (lower on the top and higher on the bottom). In this case, the leaf spring 302B is made of a flat plate made of stainless spring steel and formed into a circle of approximately the same size as the other end surface 302 of the shaft body 3S of the handle shaft 3, with a rectangular (quadrilateral) bearing insertion hole 304 formed in the center so that the bearing 31 on the other end surface 302 of the shaft body 3S can be inserted through it. In this way, the leaf spring 302B is installed on the other end surface 302 of the shaft body 3S of the handle shaft 3 with the bearing 31 passed through the upper and lower step portions 302a, 302b, at an appropriate angle so that the upper side is lower and the lower side is higher.

[0070] In this way, the handle lever 2 is attached to the handle lever mounting portion 3B via the leaf spring 302B on the other end surface 302 of the shaft body 3S of the handle shaft 3 and the handle shaft pin 32 on the bearing 31 on the other end surface 302 of the shaft body 3S.

[0071] As shown in Figure 8, in this flat handle H, the handle lever 2 is made of a metal material such as zinc die-cast or aluminum, and the main body is formed in the shape of a long, thin plate. A pair of bearing portions 21 are formed at the top of the back portion 2b of this main body, and a small opening 220 is formed on the bottom side so that the keyhole 60 of the lock unit 6 can be exposed. A lock unit case holding portion 22 is connected to this opening 220 and serves as a cylindrical lock unit holding portion so that the lock unit 6 can be attached, and is formed integrally with the main body together with a lock unit case fixing portion 23. The grip portion 24 extends from the middle of the handle lever 2 in the vertical direction to the lower end of the lower portion.

[0072] In this case, the handle lever 2 is formed so that the entirety can be fitted into the opening 10 of the front part 1a of the handle case 1. That is, the main body (front part 2a, back part 2b, and four side parts 2c-2f) is formed like a thin plate with a semicircular upper part in front view and a vertically long, approximately rectangular lower part, with the same length, width, and depth as the space so that it can be fitted into the space surrounded by the four side parts 1c1-1f1 on the front side of the handle case 1. A pair of bearing parts 21 on the upper part of the back part 1b of the main body are formed so that they can be operatively connected to the handle lever mounting part 3B (bearings 31) of the handle shaft 3 of the handle case 1, and each bearing part 21 is formed with a depth that allows it to be placed in the space surrounded by the four side parts 1c2-1f2 on the back side of the handle case 1. The lock unit case mounting portion 22 on the lower side of the back portion 2b of the main body consists of a cylindrical holding portion 22A and a groove-shaped guide portion 22B, and together with the lock unit case fixing portion 23, is formed to a size that allows the entire unit to be placed within the space surrounded by the four side portions 1c-1f of the handle case 1.

[0073] Here, when the pair of bearings 21 on the upper part of the back part 2b of the main body are viewed in relation to the handle lever mounting part 3B of the handle shaft 3 of the handle case 1, each bearing 21 is formed to protrude in a generally V-shaped vertical cross section so that it can be arranged in parallel to the bearing 31 of the handle shaft 3 and can engage with the leaf spring 302B of the handle shaft 3. In this case, the pair of bearings 21 have a generally cylindrical basic shape at the upper part of the back part 2b of the handle lever 2, and the back part is formed in a generally V-shaped vertical cross section, with an upper surface portion facing diagonally upward and a lower surface portion facing diagonally downward, and a groove 210 is formed in the center of the width direction of this back part so that the horizontal cross section in the vertical direction is generally U-shaped, the vertical cross section (side cross section) on the front part side is generally semicircular, and the vertical cross section (side cross section) on the back part side is generally V-shaped, gradually widening from both the upper and lower ends of the generally semicircular shape to the back part, and the bearings 21 are formed on both sides of this groove 210 (as a pair of bearings 21). In this case, the center of the approximately semicircular vertical cross section of the groove 210 is located at a position (height) slightly lower than the position (height) of the upper back protrusion 211 between the upper and lower surfaces of the back part, and is formed into an approximately semicircular cross section with approximately the same diameter as the approximately semicircular tip of the bearing 31 of the handle shaft 3, so that these bearing parts 21 can rotate around one end face along one end face of the bearing 31 of the handle lever mounting part 3B of the handle shaft 3, and the upper back protrusion 211 of each bearing part 21 can slide up and down on the plane of the leaf spring 302B on the other end face 302 of the handle shaft 3 and press against the plane of the leaf spring 302B. In this way, the handle lever 2 is attached to the handle case 1 via the handle shaft 3 so that it can be raised and rotated. When the handle lever 2 is raised from the handle case 1, the reaction force of the leaf spring 302B holds the handle lever 2 in any raised position, and when the handle lever 2 is lowered and brought into contact with the handle case 1, the reaction force of the leaf spring 302B holds the handle lever 2 in this lowered position.

[0074] As shown in Figure 2, the lock unit 6 incorporated into the handle lever 2 of this flat handle H is a cylindrical lock that employs a known disk tumbler lock mechanism. It has a keyhole 60 on the front end surface of the rotor, and a drive cam protrusion 61 protruding from the rear end surface of the rotor at a position eccentric to the center of rotation. The locking member 62 is a flat plate (hereinafter referred to as slide plate 62) whose width is smaller than the diameter of the lock unit 6 and whose length is larger than the diameter of the lock unit 6, and which has a passive slot 620 elongated in the width direction in the center of the plate surface. The slide plate 62 is operatively connected to the lock unit 6 by engaging the cam protrusion 61 of the lock unit 6 with the slot 620. In this way, by inserting and turning the key 5 (see Figure 1) into the keyhole 60 on the front end surface of the lock unit 6, the rotor rotates, and in response, the slide plate 62 is driven back and forth in a direction perpendicular to the axial direction of the lock unit 6 (in this case, the up-and-down direction).

[0075] As shown in FIG. 8, a lock unit case mounting portion 22 that holds the lock unit 6 together with a slide plate 62 via a lock unit case 25 is provided on the back surface 2b of the handle lever 2, together with a lock unit case fixing portion .

[0076] As shown in FIG. 9, the lock unit case 25 is formed separately from the handle lever 2 and includes a cylindrical holder 25A having an inner peripheral surface capable of holding the lock unit 6 along its outer peripheral surface, a cylindrical guide 25B extending from one end of the holder 25A in the drive direction of the slide plate 62 and having an inner peripheral surface capable of guiding the slide plate 62 in the drive direction, and a boss 251 protruding from the peripheral surface of the holder 25A and having a screw hole 250 into which a fixing screw s2 (see FIG. 2) can be fastened from the outside of the holder 25A to the inside of the holder 25A. In this case, the holder 25A has a cylindrical inner peripheral surface capable of holding the lock unit 6 along its outer peripheral surface, and is formed into a cylindrical shape with a cylindrical outer peripheral surface. The guide 25B extends perpendicular to one end of the holder 25A so as to be able to slide and guide the slide plate 62 in the drive direction, and has a rectangular inner peripheral surface and an outer shape with a rectangular cross section. The holding portion 25A and the guide portion 25B are generally T-shaped in side view. The boss portion 251 is formed on one end of the peripheral surface of the holding portion 25A in a generally U-shape in bottom view, and protrudes parallel to the guide portion 25B.

[0077] The lock unit case mounting portion 22 has an opening 220 formed on the underside 2f of the front portion 2a of the handle lever 2 to the back portion 2b, exposing the keyhole 60 of the lock unit 6. The lock unit case mounting portion 22 is formed integrally with and communicates with the opening 220 on the back portion 2b, has a cylindrical shape into which the holding portion 25A of the lock unit case 25 can be fitted and into which the guide portion 25B of the lock unit case 25 can be engaged at its inner end, and has a groove 221 on its peripheral surface into which the boss portion 251 of the lock unit case 25 can be inserted. In this case, the opening 220 is formed in a circular shape with approximately the same diameter as the lock unit 6. The lock unit case mounting portion 22 is formed in a cylindrical shape with cylindrical inner and outer surfaces on the back portion 2b of the handle lever 2, into which the holding portion 25A of the lock unit case 25 can be fitted and into which the guide portion 25B of the lock unit case 25 can be engaged at its inner end. Groove 221 is formed in the vicinity of the inner end of the cylindrical peripheral surface portion so that boss 251 can be inserted from this end in the axial direction. The terminal end of groove 221 is formed in a semicircular shape. Lock unit case fixing portion 23 is formed so that it continues from back surface portion 2b and is spaced from groove 221 by the length of boss 251 near the outer side of groove 221 of lock unit case mounting portion 22, with one side portion protruding in the shape of a square plate parallel to groove 221, and at a position on the side surface facing the terminal end of groove 221, a screw insertion hole 230 is formed in a circular shape that passes through so that fixing screw s2 that is fastened to screw hole 250 of boss 251 of lock unit case 25 can be inserted.

[0078] In this way, the lock unit 6 is attached to the lock unit case attachment portion 22 via the lock unit case 25 together with the slide plate 62. before unit case It is fixed by a fixing screw s2 that is fastened from the fixing portion 23 through the boss portion 251.

[0079] In this way, the lock unit 6 is attached to the lock unit case mounting portion 22 via the lock unit case 25 together with the slide plate 62. Therefore, even if the lock units 6 have different shapes and sizes, by providing each lock unit 6 with a lock unit case 25 that has an internal structure (internal shape and size) corresponding to the external shape and size of the lock unit 6 and a common external shape that corresponds to this lock unit case mounting portion 22, lock units 6 of different sizes and shapes can be freely replaced. This expands the variety of lock units 6 that can be used with this flat handle H, making it possible to widely meet user needs. In addition, manufacturing costs can be kept low.

[0080] The handle lever 2 is constructed in this manner and is attached to the handle lever attachment portion 3B of the handle shaft 3 inserted into the shaft tube portion 101 of the back surface 1b of the handle case 1, with the leaf spring 302B interposed between the other end surface 302 of the shaft body 3S of the handle shaft 3 and the handle shaft pin 32 connected to the bearing 31 on the other end surface 302 of the shaft body 3S. Referring to Figure 2, in attaching the handle lever 2, first, the leaf spring 302B is attached to the other end surface 302 of the shaft body 3S of the handle shaft 3, and the bearing 31 on the other end surface 302 is passed through the bearing insertion hole 304 of the leaf spring 302B and installed diagonally between the upper and lower steps 302a and 302b on the other end surface 302. Next, the bearing portions 21 of the handle lever 2 are arranged on both sides of the bearing 31 of the handle lever mounting portion 3B, and the handle shaft pin 32 is inserted between the bearing portions 21 and the pin insertion holes 20, 310 of the bearing 31 to mount the handle lever 2 to the handle lever mounting portion 3B. At this time, as shown in FIG. 3, a setscrew s1 is tightened into the threaded hole 311 of the bearing 31 of the handle lever mounting portion 3B. By tightening this setscrew s1, the setscrew s1 engages with the locking groove 320 in the center of the handle shaft pin 32, which prevents the handle shaft pin 32 from coming out, and the handle shaft pin 32 is rotatably fixed in the pin insertion hole 310 of the bearing 31. In this manner, in mounting the handle lever 2, fixing the handle shaft pin 32 is simple, and therefore the handle lever 2 can be mounted to the handle lever mounting portion 3B easily.

[0081] The flat handle H is then provided with this configuration and attached to the door panel. An example of how this flat handle is attached to a door panel is also shown in Figure 1. Here, a mounting opening P0 for the flat handle H is formed in advance in a predetermined position on the door panel P in the shape of a vertically long rectangle so that the handle case 1 can be inserted. In this case, screw holes or through holes as in conventional methods are not provided in the door panel P because they are not necessary.

[0082] In addition, in the normal state before this flat handle H is attached to the door panel P, the upper and lower case hooks 12 and hooks 15 of the handle case 1 are in their initial states. That is, the upper case hook 12 has a support portion 121 that rises from an end portion close to the upper flange 11c on the rear upper surface portion 1c2 of the handle case 1 and extends obliquely midway between the rear upper surface portion 1c2 and the upper flange 11c, and the other end is folded back in a substantially U-shape, and an elastic engagement portion 122 extends parallel to the support portion 121 with a predetermined gap between it and the support portion 121, and one end of the elastic engagement portion 122 is disposed close to the intersection of the rear upper surface portion 1c2 and the upper flange 11c. The lower hook 15 is urged to rotate outward by a coil spring 17 (see FIG. 5) between the hook 15 and the hook attachment recess 13, and the locking claw 15C of the hook 15 elastically protrudes outward (downward) from the hook attachment recess 13 to the outside of the rear lower surface portion 1f2 of the handle case 1.

[0083] To attach this flat handle H to the door panel P, first, a case packing is attached to the back surface of the flange 11 of the handle case 1, the handle case 1 is turned vertically and aligned with the mounting opening P0 of the door panel P, and the back portion 1b and the back-side four side portions 1c2-1f2 of the handle case 1, together with the case hooks 12 on the back-side upper surface portion 1c2, are inserted into the mounting opening P0 of the door panel P from the front side to the back side of the door panel P. Next, the handle case 1, together with the hooks 15 of the case hook mechanism 15D on the back-side lower surface portion 1f2, is inserted into the mounting opening P0 of the door panel P and pushed in (one push). In this way, the hook 15 on the rear lower surface portion 1f2 is pressed against the edge of the mounting opening P0 and inserted into the hook mounting recess 13, and the mounting opening P0 is passed from the front side to the rear side of the door panel P, causing the locking claw 15C of the hook 15 to protrude from the hook mounting recess 13 to the outside of the rear lower surface portion 1f2 on the rear side of the door panel P.

[0084] In this manner, the rear side lower surface 1f2 and the rear side left and right side surface portions 1d2, 1e2 of the handle case 1 slide from one end on the rear side 1b to the middle, and from the middle to the other end on the front side 1a, along the short-side and long-side edges of the mounting opening P0 of the door panel P, and pass through the mounting opening P0 of the door panel P. During this movement, the locking claws 15C of the hook 15 protruding outward from the surface of the rear side lower surface 1f2 of the handle case 1 come into contact with and are pressed against the short-side edges of the mounting opening P0 of the door panel P, and the locking claws 15C rotate toward the hook mounting recess 13 of the rear side lower surface 1f2 of the handle case 1 against the biasing force of the coil spring 17 between the hook 15 and the hook mounting recess 13 (while compressing the coil spring 17), and are then sunk into the hook mounting recess 13. Then (the moment the handle case 1 is pushed into the mounting opening P0 of the door panel P), the locking claws 15C of the hook 15 are completely sunk into the hook mounting recess 13, the handle case 1 passes completely through the mounting opening P0 of the door panel P, the flange 11 around the front opening 10 of the handle case 1 abuts against the entire peripheral edge of the mounting opening P0 on the front side of the door panel P via the case gasket, and as the hook 15 in the hook mounting recess 13 passes through the mounting opening P0 of the door panel P, the spring force of the coil spring 17 (the elastic return of the coil spring 17) between the hook 15 and the hook mounting recess 13 on the back side of the door panel P causes the locking claws 15C of the hook 15 to rotate outward from the hook mounting recess 13 on the back side underside 1f2 of the handle case 1, protrude outward from the hook mounting recess 13, and elastically engage with the edge in the short side direction of the mounting opening P0 of the door panel P. Here, as shown in Figure 7, the flat handle H has the rotation center C1 of the hook 15 located on the side of one end 15a of the hook 15 and slightly closer to the inner surface 15e between the outer surface 15d and the inner surface 15e, and the other end 15f of the hook 15 is formed in an arc shape with the center of the circle closer to one end 15a of the hook 15 and closer to the inner surface 15e than the rotation center C1 of the hook 15.As a result, as the locking claws 15C of the hook 15 rotate outward, the arc-shaped portions of the locking claws 15C protrude towards the edge of the mounting opening P0 of the door panel P and bite into the edge of the mounting opening P0 in the short side direction.As a result, the flange 11 on the front side of the handle case 1 is pulled (via the case gasket) around the entire peripheral edge of the mounting opening P0 on the front side of the door panel P and pressed against it, firmly attaching and fixing the handle H to the door panel P.

[0085] Then, together with the action of this hook 15, the case hook 12 on the rear side upper surface portion 1c2 is elastically engaged with the edge of the mounting opening P0. That is, due to the action of the hook 15 on the rear side lower surface portion 1f2, the elastic engaging portion 122 of the case hook 12 is pressurized and deformed by the edge of the mounting opening P0, and the reaction force of this elastic engaging portion 122 against the edge of the short side direction of the door panel 6 presses the flange 11 on the front side of the door panel P against the periphery of the edge of the mounting opening P, and also presses the elastic engaging portion 122 of the case hook 12 on the rear side of the door panel P against the edge of the short side direction of the mounting opening P0.

[0086] In this way, when attaching this flat handle H to the door panel P, the rear side 4 side portions 1c2-1f2 of the handle case 1 are inserted from the front side to the rear side of the door panel P together with the case hook 12 on the rear side upper surface portion 1c2 from the rear portion 1b of the handle case 1, and the handle case 1 is inserted into the attachment opening P0 of the door panel P together with the hook 15 on the rear side lower surface portion 1f2 and pushed in (by one push). The elastic engagement portion 122 of the case hook 12 and the locking claw 15C of the hook 15 on the rear lower surface portion 1f2 are each pressed by the edges of the short sides of the mounting opening 60, and the edges of the mounting opening 60 are clamped between the locking claw 15C of the tip of the hook 15 of the case hook 12 and the flange 11, and this state is fixed by the reaction force of the elastic engagement portion 122 of the case hook 12 against the edges of the mounting opening 60 and the elastic locking of the locking claw 15C of the hook 15 against the edges of the mounting opening 60. Thus, the flat handle H is securely attached to the mounting opening P0 of the door panel P without any rattle.

[0087] In this way, the flat handle H can be easily, quickly and reliably fixed to the door panel P with a single touch.

[0088] Figure 1 also shows an example of how to use this flat handle H. When the door panel P is closed relative to the fixed frame, the handle lever 2 is normally collapsed onto the handle case 1, and in this case, as shown in Fig. 10, the upper back protrusion 211 of the handle lever 2 presses and deforms the upper part of the leaf spring 302B (a position above the rotation center of the handle lever 2), and the reaction force generated in this leaf spring 302B is applied to the upper back protrusion 211 in the collapsed direction of the handle lever 2, thereby holding the handle lever 2 in this collapsed position. Then, in this state, the lock unit 6 is locked by the key 5 (i.e., the slide plate 62 is moved upward and engaged with the locking member receiving part 111 on the handle case 1 side), and the handle lever 2 is locked.

[0089] When the door panel D is opened from such a locked state, the handle lever 2 is first unlocked. In this case, referring to Fig. 2, when the key 5 is inserted into the keyhole 60 of the lock unit 6 and the lock unit 6 is rotated in the unlocking direction to set the lock unit 6 to the unlocked state, the slide plate 62 moves downward and is released from the locking member receiving portion 111 of the handle case 1, thereby unlocking the handle lever 2. When the handle lever 2 is then lifted from the handle case 1, the upper back protrusion 211 of the handle lever 2 presses and deforms the vertical middle portion of the leaf spring 302B (a position slightly below the rotation center of the handle lever 2) at any lifted position of the handle lever 2, and the reaction force generated in the leaf spring 302B is applied to the upper back protrusion 211 in the upright direction of the handle lever 2, thereby holding the handle lever 2 in this lifted position. In this case, steps 302a and 302b are provided at the top and bottom of the other end surface 302 of the shaft body 3S of the handle shaft 3, respectively. The lower step 302b is higher than the upper step 302a, and the leaf spring 302B is disposed obliquely between the upper and lower steps 302a and 302b, facing diagonally upward. As a result, as the handle lever 2 is gradually raised from the handle case 1, the upper protrusion 211 on the back surface of the handle lever 2 slides downward on the plane of the oblique leaf spring 302B, pressing and deforming the vertical intermediate portion of the leaf spring 302B (a position further below the rotation center of the handle lever 2), and the reaction force generated in the leaf spring 302B gradually increases. In other words, the reaction force of the leaf spring 302B gradually becomes stronger. Then, when the handle lever 2 is raised to the uppermost position, the reaction force of the leaf spring 302B becomes maximum. Therefore, no matter what position the handle lever 2 is raised to relative to the handle case 1, it is held stably without rattle relative to the handle case 1. When the handle lever 2 is raised to the uppermost position and then rotated in a predetermined opening direction, the handle shaft 3 rotates integrally with the handle lever 2 in the same direction via the handle shaft pin 32 between the handle lever 2 and the handle shaft 3, and the stopper plate 4 is released from the receiving plate on the fixed frame side. When the door panel P is opened from this state, the door panel P is opened.

[0090] Subsequently, when closing the door panel P, after the door panel P has closed, the handle lever 2 held in the uppermost position is rotated in a predetermined closing direction, and the handle shaft 3 is rotated integrally in the same direction via the handle shaft pin 32 between the handle lever 2 and the handle shaft 3, causing the stopper plate 4 to engage with the receiving metal on the fixed frame side. This closes the door panel P. Next, when the handle lever 2 is lowered onto the handle case 1, as shown in FIG. 10, the upper back surface protrusion 211 of the handle lever 2 presses and deforms the upper part of the leaf spring 302B (a position above the rotation center of the handle lever 2), and the reaction force generated in this leaf spring 302B is applied to the upper back surface protrusion 211 in the lowering direction of the handle lever 2, thereby holding the handle lever 2 in this lowered position. This maintains the door panel P in a closed state. When locking the handle lever 2, the key 5 is passed through the keyhole 60 of the lock unit 6 and the lock unit 6 is rotated in the locking direction to place the lock unit 6 in the locked state. The slide plate 62 is then moved upward on the lock unit 6 and engaged with the locking member receiving portion 111 of the handle lever 2, thereby locking the handle lever 2.

[0091] As described above, according to this flat handle H, the case hook 12 is provided on the upper surface portion 1c2 of the rear side of the handle case 1, and the case hook mechanism 15D is provided on the lower surface portion 1f2 of the rear side. When attaching the flat handle H to a door panel, the handle case 1 is inserted from the rear surface 1b side together with the case hook 12 on the upper surface portion 1c2 of the rear side into the attachment opening of the door panel from the front side to the rear side of the door panel, and the hook 15 of the case hook mechanism 15D on the lower surface portion 1f2 of the rear side is pressed by the edge of the attachment opening to be immersed in the hook attachment recess 13, and the hook 15 is passed through the attachment opening from the front side to the rear side of the door panel, and attached to the rear surface 1b side of the door panel. By making the locking claws 15C of the hooks 15 protrude from the hook mounting recess 13 to the outside of the rear lower surface 1f2, the flange 11 is pressed against the periphery of the edge of the mounting opening on the front side of the door panel, and the elastic engaging portions 122 of the case hooks 12 and the locking claws 15C of the hooks 15 of the case hook mechanism 15D are each elastically engaged with the edge of the mounting opening on the rear side of the door panel, so that the flat handle H can be mounted to the door panel with a single touch. Therefore, the handle case 1 can be easily and reliably mounted to the door panel with a single touch without using screws, and the mounting work can be greatly improved.

[0092] In addition, by providing a case hook 12 on the upper surface 1c2 of the rear side of the handle case 1 and a case hook mechanism 15D on the lower surface 1f2 of the rear side, and by confining the case hook mechanism 15D to only one location on the lower surface 1f2 of the rear side, the number of parts required to attach the flat handle H can be significantly reduced, thereby reducing costs.

[0093] In this case, the case hook 12 has a support portion 121 that rises from the end portion close to the flange 11 on the rear upper surface portion 1c2, extends diagonally midway between the rear upper surface portion 1c2 and the flange 11, and is folded back at the other end in an approximately U-shape so that the elastic engagement portion 122 extends parallel to the support portion 121 with a predetermined gap between it and the support portion 121, and one end of the elastic engagement portion 122 is positioned close to the intersection of the rear upper surface portion 1c2 and the flange 11. As a result, a reaction force of the elastic engagement portion 22 is generated from the rear side of the door panel toward the front side, and together with the biasing force of the coil spring 17 of the hook 15 of the case hook mechanism 15D, it acts to attract the flange 11 of the handle case 1 to the front of the door panel, and the case hook 12, the case hook mechanism 15D and the flange 11 can firmly fix the flat handle H to the door panel without rattle.

[0094] Furthermore, the flat handle H has the following advantages. (1) The handle lever attachment portion 3B of the handle shaft 3 extends in a plate shape from the other end surface 302 of the shaft body 3S of the handle shaft 3 and comprises a bearing 31 having a pin insertion hole 310 penetrating between both side surfaces thereof, and a handle shaft pin 32 inserted into the pin insertion hole 310 of the bearing 31. In contrast, the handle lever 2 is provided with a pair of bearing portions 21 extending in a plate shape in the upper part of the back surface portion 2b and each having a pin insertion hole 20 between both side surfaces thereof which communicates with the pin insertion hole 310 of the bearing 31. In this way, the handle lever 2 is attached to the handle lever attachment portion 3B with the bearing portions 21 of the handle lever 2 disposed on both sides of the bearing 31 of the handle lever attachment portion 3B, and the handle shaft pin 32 inserted between the pin insertion holes 20, 310 of the bearing 31 and the bearing portions 21. In this type of mounting, a threaded hole 311 is provided between both end faces of the bearing 31 of the handle lever mounting portion 3B and penetrates a part of the inner circumferential surface of the pin insertion hole 310, into which a setscrew s1 can be screwed. leverAn engagement groove 320 is provided around the entire circumference of the intermediate portion of the handle shaft pin 32 inserted into the pin insertion hole 310 of the bearing 31 of the mounting portion 3B so as to be engageable with a setscrew s1 threaded into the threaded hole 311. In this way, the handle shaft pin 32 is inserted into the pin insertion hole 310 of the bearing 31 of the handle lever mounting portion 3B and fixed by engagement between the engagement groove 320 of the handle shaft pin 32 and the setscrew s1 threaded into the threaded hole 311 of the bearing 31 of the handle lever mounting portion 3B. This simplifies the fixing of the handle shaft pin 32, and accordingly makes it easier to mount the handle lever 2 to the handle lever mounting portion 3B.

[0095] (2) In this handle shaft 3, the handle lever attachment portion 3B includes: a bearing 31 extending in a plate shape from the other end face 302 of the shaft body 3S of the handle shaft 3 and having a pin insertion hole 310 between both side faces thereof; a handle shaft pin 32 inserted into the pin insertion hole 310 of the bearing 31; and a leaf spring 302B having steps 302a, 302b provided above and below the pin insertion hole 310 when the pin insertion hole 310 is oriented horizontally on the other end face 302 of the handle shaft body 32, and disposed between the steps 302a, 302b and with which the handle lever 2 (rear upper protrusion 211) can elastically engage. Of the steps 302a, 302b on the other end face 302 of the shaft body 3S, the lower step 302b is higher than the upper step 302a, and the leaf spring 302B is disposed obliquely between the upper and lower steps 302a, 302b. By doing so, as the handle lever 2 is gradually raised from the handle base 1, the reaction force generated in the leaf spring 302B due to the elastic engagement between the upper protrusion 211 on the rear surface of the handle lever 2 and the leaf spring 302B can be gradually strengthened, and the handle lever 2 can be held stably without rattle no matter what raised position it is to relative to the handle base 1, and the handle lever 2 can be held reliably at the uppermost position without rattle. Therefore, the handle lever 2 can be smoothly raised and rotated, improving the operability of the handle lever 2.

[0096] (3) This flat handle H has a locking unit 6 having a keyhole 60 on the front and a cam protrusion 61 on the back, and a slide plate 62 operatively connected to the cam protrusion 61 of the locking unit 6 and driven on the back side of the locking unit 6, incorporated into the handle lever 2, and is equipped with a locking device L6 on the other hand, which is formed with a locking member receiving portion 111 that can be engaged and disengaged with the slide plate 62. The handle lever 2 includes a lock unit case 25 formed separately from the handle lever 2 and including a cylindrical holding portion 25A having an inner peripheral surface capable of holding the lock unit 6 along its outer peripheral surface, a cylindrical guide portion 25B extending at one end of the holding portion 25A in the driving direction of the slide plate 62 and having an inner peripheral surface capable of guiding the slide plate 62 in the driving direction, a boss portion 251 protruding from the peripheral surface of the holding portion 25A and having a screw hole 250 into which a fixing screw s2 can be fastened from the outside of the holding portion 25A to the inside of the holding portion 25A, and a keyhole 6 of the lock unit 6 penetrating through the back portion 2b on the underside 1f of the front portion 2a of the handle lever 2. 2. The lock unit 6 includes a lock unit case mounting portion 22 having an opening 220 that exposes the lock unit case 25, a lock unit case mounting portion 22 that is formed integrally with the back surface portion 2b and communicates with the opening 220, a cylindrical shape into which the holding portion 25A of the lock unit case 25 can be fitted and into which the guide portion 25B of the lock unit case 25 can be engaged at its inner end, and a groove 221 on its circumferential surface into which the boss portion 251 of the lock unit case 25 can be inserted, and a lock unit case fixing portion 23 that faces the end portion of the groove 221 of the lock unit case mounting portion 22 and is disposed at a distance from the end portion 221 by the length of the boss portion 251, and has a screw insertion portion 230 that can communicate with the screw hole 250 of the boss portion 251. In this way, the lock unit 6 is attached to the lock unit case mounting portion 22 via the lock unit case 25 together with the slide plate 62, and the lock unit 6 is fixed to the lock unit case mounting portion 22 via the lock unit case 25. before unit caseThe lock unit 6 is fixed by a fixing screw s2 that is tightened from the fixing portion 23 through the boss portion 251. By doing this, even if the lock units 6 have different shapes and sizes, by providing each lock unit 6 with a lock unit case 25 that has an internal structure (internal shape and size) corresponding to the external shape and size of the lock unit 6 and a common external shape that corresponds to this lock unit case mounting portion 22, the lock units 6 can be freely replaced even if they have different sizes and shapes. Therefore, the variety of lock units 6 that can be used with this flat handle H can be expanded, making it possible to widely meet user needs. In addition, manufacturing costs can be kept low.

[0097] In this embodiment, the case hook 12 is fixed to the upper flange 11c near one surface of the handle case 1, in this case, on one surface of the handle case 1, but the case hook 12 may be fixed to one surface. Also, while the case hook 12 includes a pair of hooks 12B, it may consist of a single hook 12B or multiple hooks 12B. Furthermore, when attaching the flat handle H to the door panel, the elastic engagement portion 122 of the case hook 12 and the locking claw 15C of the hook 15 of the case hook mechanism 15D are elastically engaged with the edge of the attachment opening on the back side of the door panel, but the elastic engagement portion 122 of the case hook 12 and the locking claw 15C of the hook 15 of the case hook mechanism 15D may be elastically engaged with the periphery of the edge of the attachment opening. This also provides the same effects as those of the above embodiment.

[0098] In this embodiment, the case hook mechanism 15D is provided on the end cover A1 of the handle case 1, but if the handle case 1 does not have an end cover A1, it can be provided on the handle case 1 itself. In this case, a flat plate is similarly provided protruding from the rear lower surface 1f2 of the handle case 1, or this rear lower surface 1f2 is opened to form a recess, a hook mounting recess is provided, and bearings are formed on both side surfaces of each flat plate or recess. In this way, the case hook mechanism 15 is similarly configured. This also provides the same effects as those of the above embodiment.

[0099] Furthermore, in this embodiment, the lock unit 6 is incorporated into the handle lever 2 together with the slide plate 62, but it may be provided in the handle case 1 instead of the handle lever 2. In this case, the handle case is provided with a lock unit case that has a cylindrical holding portion formed separately from the handle case and having an inner peripheral surface capable of holding the lock unit along its outer peripheral surface, a cylindrical guide portion at one end of the holding portion that extends in the drive direction of the locking member and has an inner peripheral surface capable of guiding the locking member in that drive direction, and a boss portion that protrudes from the peripheral surface of the holding portion and has a screw hole that allows a fixing screw to be fastened from the outside of the holding portion to the inside of the holding portion, and an opening is formed on the underside of the front part of the handle case that penetrates through the back part to expose the keyhole of the lock unit, and a lock unit case that communicates with the opening on the back side the lock unit case mounting portion is formed integrally with the slide plate and has a cylindrical shape so that the holding portion of the lock unit case can be fitted therein and the guide portion of the lock unit case can be engaged at its inner end, and has a groove on its peripheral surface so that the boss portion of the lock unit case can be inserted therein; and the lock unit case fixing portion is arranged opposite to the end portion of the groove of the lock unit case mounting portion and spaced from this end portion by the length of the boss portion, and has a screw insertion portion so that it can communicate with the screw hole of the boss portion. The lock unit is attached to the lock unit case mounting portion together with the slide plate via the lock unit case, and the lock unit case fixing portion is provided with a lock unit case mounting portion. before unit case It is fixed by a fixing screw that is tightened from the fixing part through the boss part. This also provides the same effects as those of the above embodiment. [Explanation of symbols]

[0100] H Plane handle (handle) 1 Handle Case 1a Front part 1b Back part 1c Top part 1c0 screw hole 1c10 screw hole 1c11 Partition 1d Left side part 1d0 recess 1e Right side part 1e0 recess 1f Bottom part 10 aperture 101 Shaft cylinder part 102 catch seat 102a Flat part 102b Stepped section 103 Boss 103s screw hole s3 mounting screw A0 opening A1 End Cover A11 Flat plate part A110 screw insertion hole A12 flat plate part A13 Flat plate part A131 Support part 11 Flange (step) 111P Locking member receiving part mounting part 1110 Screw insertion hole 111 Locking member receiving portion (slide plate receiving portion) 1111 Locking surface 1112 screw hole s4 mounting screw 12 Case Hooks 12A mounting part 12a1 base 12a2 Base extension 12a3 Screw insertion hole s Screw 12B hook 121 support part 122 Elastic engagement portion 13 Hook mounting recess 130 Spring bearing part 15D Case Hook Mechanism 15 Hook 15C Locking claw 2 Handle lever 2a Front part 2b Back part 2c Top part 2d Left side part 2e Right side part 2f Bottom part 20 pin insertion holes 21 Bearing section 210 groove 211 Rear upper protrusion 22 Lock unit case mounting part 22A Holding part 22B Guide part 220 Opening 221 Groove 23 Lock unit case fixing part 230 Screw insertion hole 24 Grip section 25 Lock unit case 25A holding part 25B Guide part 250 screw holes 251 Boss Section s2 Fixing screw 3 Handle shaft 3S shaft body 301 One end face 302 Other end face 302a Stepped section 302b Stepped section 302B leaf spring 303 Rotation direction control part 303a Guide groove 303b Guide pin 304 Bearing insertion hole 3B Handle lever mounting part 31 Bearings 310 Pin insertion hole 311 screw hole 32 Handle shaft pin 320 Locking groove s1 Set screw 3A Clamp mounting part 33 Stopper hook mounting recess 330 Spring hole 34 Bearings 340 Shaft insertion part 35 Clasp Hook 35C locking claw 36 axes 37 Spring components (coil springs) 4 Clasp 40 Mounting holes 5 keys L6 locking device 6 Lock unit (cylinder lock) 60 Keyhole 61 Cam protrusion 62 Locking member (slide plate) 620 Groove P door panel P0 Mounting opening

Claims

1. a handle lever operatively connected to a handle shaft rotatably arranged on a rear surface of the handle case and mounted within the handle case so as to be rotatable up and down relative to the handle case and rotatable in a direction that rotates the handle shaft from an upright position relative to the handle case; and a stopper attached to the handle shaft on the rear side of the rear surface of the handle case so as to be rotatable together with the handle shaft, and which can be engaged with and disengaged from a receiving portion such as a receiving portion on a fixed frame body side of an equipment storage cabinet by operating the handle lever; and a flat handle in which the handle case is inserted from the rear side of the handle case into an attachment opening formed in a door panel and the flange of the handle case is abutted against the periphery of the edge of the attachment opening on the front side of the door panel, The handle case has at least two opposing peripheral surfaces, one of which has a case hook and the other has a case hook mechanism; The case hook is The device is formed in a substantially U-shape from a material having elasticity or spring properties, a support portion having one end fixed to the one surface or in the vicinity thereof, raised above the one surface, and extending between the one surface and the flange; an elastic engagement portion that is folded back from the other end of the support portion and has one end that extends toward an edge portion of the one surface on the flange side or its vicinity, with a predetermined gap between it and the support portion; and The case hook mechanism is a hook mounting recess formed on the other surface, and a pair of bearings formed on both sides of the hook mounting recess; a hook formed in a generally top-like shape so as to be fittable within the hook mounting recess, with a rotation center provided at one end side facing the back surface of the handle case between both sides facing the pair of bearings, with a locking claw extending from its outer surface that is fitted and arranged to the outside and the other end side thereof, and rotatably supported via a shaft that spans between the one ends of the pair of bearings that are facing the back surface of the handle case, with the locking claw being arranged so as to be able to appear and disappear from the hook mounting recess to the outside of the other surface; a spring member interposed between the hook and the hook mounting recess and urging the locking claw to rotate so as to protrude from the hook mounting recess to the outside of the other surface in a normal state; and When attaching the flat handle to the door panel, the handle case is inserted from the rear side into the attachment opening of the door panel together with the case hook on one side from the front side to the rear side of the door panel, and the hook of the case hook mechanism on the other side is pressed by the edge of the attachment opening to be immersed in the hook attachment recess, and the attachment opening is passed from the front side to the rear side of the door panel, so that the locking claw of the hook on the rear side of the door panel protrudes from the hook attachment recess to the outside of the other side, thereby pressing the flange against the periphery of the edge of the attachment opening on the front side of the door panel, and elastically engaging the elastic engagement portion of the case hook and the locking claw of the hook of the case hook mechanism on the rear side of the door panel with the edge or periphery of the edge of the attachment opening, respectively, thereby attaching the flat handle to the door panel with a single touch. A flat handle characterized by:

2. 2. The flat handle according to claim 1, wherein the case hook has a support portion that rises from an end side of one surface that is close to the flange and extends obliquely to the middle between the one surface and the flange, and is folded back from the other end in a substantially U-shape so that the elastic engagement portion extends parallel to the support portion with a predetermined gap between it and the support portion, and one end of the elastic engagement portion is disposed close to the intersection of the one surface and the flange.

3. a locking device which is mounted on one of a handle case or a handle lever, and which incorporates a locking unit having a keyhole on the front side and a cam protrusion on the back side, and a locking member which is operatively connected to the cam protrusion of the locking unit and driven on the back side of the locking unit, and which is formed on the other side with a locking member receiving part which can be engaged with and disengaged from the locking member, and the handle case or the handle lever is formed separately from the handle case or the handle lever, and which comprises a locking unit case which is formed separately from the handle case or the handle lever, and which comprises a cylindrical holding part which has an inner peripheral surface capable of holding the locking unit along its outer peripheral surface, a cylindrical guide part which extends at one end of the holding part in the driving direction of the locking member and has an inner peripheral surface capable of guiding the locking member in that driving direction, and a boss part which protrudes from the peripheral surface of the holding part and has a screw hole which can fasten a fixing screw from the outside of the holding part to the inside of the holding part, and 3. The flat handle according to claim 1, further comprising: a lock unit case mounting portion having an opening formed in its front portion that exposes the keyhole of the lock unit, a lock unit case mounting portion formed integrally with and communicating with the opening on its back side, having a cylindrical shape into which the retaining portion of the lock unit case can be inserted and into which the guide portion of the lock unit case can be engaged at its inner end, and having a groove on its peripheral surface into which the boss portion of the lock unit case can be inserted; and a lock unit case fixing portion facing an end portion of the groove of the lock unit case mounting portion and spaced from the end portion by the length of the boss portion, and having a screw insertion portion that can communicate with the screw hole of the boss portion, wherein the lock unit is attached to the lock unit case mounting portion via the lock unit case together with the locking member, and is fixed by the fixing screw that is tightened from the lock unit case fixing portion through the boss portion.

4. The handle shaft comprises a shaft body, a stopper plate attachment portion extending from one end face of the shaft body and to which a stopper plate is attached, and a handle lever attachment portion extending from the other end face of the shaft body and to which a handle lever is attached, the handle lever attachment portion extending in a plate shape from the other end face of the shaft body and comprising a bearing having a pin insertion hole between both side faces thereof, and a handle shaft pin inserted into the pin insertion hole of the bearing, the handle lever extends in a plate shape from the upper back part and comprises a pair of bearing portions each having a pin insertion hole between both side faces which communicates with the pin insertion hole of the bearing, the handle lever is arranged on both sides of the bearing of the handle lever attachment portion, 4. A flat handle according to claim 1, wherein a handle shaft pin is inserted between the pin insertion holes of the bearings and the bearings, and a threaded hole is formed between both end faces of the bearings of the handle lever mounting portion so as to penetrate a part of the inner surface of the pin insertion hole and allow a setscrew to be screwed therethrough, and the handle shaft pin has an engagement groove around its entire circumference in an intermediate portion inserted into the pin insertion hole of the bearing of the handle lever mounting portion so as to be engageable with the setscrew screwed into the threaded hole, and the handle shaft pin is inserted into the pin insertion hole of the bearing of the handle lever mounting portion and fixed by engagement of the engagement groove of the handle shaft pin with the setscrew screwed into the threaded hole of the bearing of the handle lever mounting portion.

5. 5. The flat handle according to claim 1, wherein the handle shaft comprises a shaft body, a stopper plate attachment portion extending from one end face of the shaft body and for attaching a stopper plate, and a handle lever attachment portion extending from the other end face of the shaft body and for attaching a handle lever, wherein the handle lever attachment portion comprises a bearing extending in a plate shape from the other end face of the shaft body and having a pin insertion hole between both side faces thereof, a handle shaft pin inserted into the pin insertion hole of the bearing, and a leaf spring disposed between the steps and with which the handle lever can be elastically engaged, the lower step of each of the steps on the other end face of the shaft body being higher than the upper step, and the leaf spring is disposed obliquely between the upper and lower step portions.

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