Handle device

Abstract

To lock / unlock a door by surely engaging / disengaging a door-side lock plate with / from a box-side receiving part.SOLUTION: A present device H is configured such that: a lock plate 9 is fastened and engaged with a receiving part by a single of pushing back a handle 3 to a base 1; the resulting fastening engagement is locked by elastic engagement between a lock claw on the handle 3 side and a lock claw engaging part on the base side; and the resulting lock is held by engaging a stopper 6 with the lock claw on the handle 3 side by locking operation of an actuator 7 and is unlocked by an unlocking operation of the actuator 7.SELECTED DRAWING: Figure 12

Description

Technical Field

[0001] The present invention relates to a handle device used for locking, unlocking, and locking and unlocking a lid or door that is hinge-coupled to various casings such as toolboxes, boxes including loading boxes, and various cabinets, and is opened and closed.

Background Art

[0002] For example, a toolbox is mounted on the body of an aerial work platform used for electrical work such as live wire work, and tools, equipment, etc. used for electrical work are stored in this toolbox.

[0003] This type of toolbox has been proposed in Patent Document 1. The toolbox of this Document 1 is formed of a horizontally long box, and a door is pivotally attached to one side surface (the side surface located on the side of the vehicle body) so as to be freely opened and closed. Latch-type flat handles are respectively attached above the left and right of the door as handle devices, and with these flat handles, the door is locked and unlocked to open or shield the side surface of the box.

[0004] The latch-type flat handle used for such a toolbox generally includes a case-shaped base that is fitted and fixed from the front side of the door panel into an opening for attaching the door panel, an operation handle that is pivotally attached to the base by a pivot pin and is accommodated in the base so as to be able to be pulled out, having an operation protrusion on the back side, a base plate that is fixed to the base with a certain interval between the back surface portion of the base, a cylindrical latch guide that is arranged at a right angle to the pivot pin and provided on the front side of the base plate, and a latch that is accommodated in the latch guide so as to be able to move forward and backward and protrudes from the end portion of the base plate to engage with a receiving piece on the box side, having a receiving groove in the middle portion. The operation protrusion on the back side of the operation handle is engaged with the receiving groove in the middle portion of the latch. When the operation handle is pulled out and rotated from the base in this way, the latch is retracted by the operation protrusion and detached from the receiving piece, and if the door panel is pulled with this operation handle, the door panel opens.

Prior Art Documents

[0005] [Patent Document 1] Japanese Utility Model Publication No. 4-23278 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] However, with the conventional latch-type flat handle described above, the operating protrusion of the operating handle is loosely fitted into the receiving groove of the latch. Therefore, when the door panel is closed, even if the latch is only partially engaged (partially locked) or not engaged (unlocked) with the strike plate, the operating handle is retracted (stored) into the base. This presents a problem in that even if the latch and strike plate are only partially engaged (locked), the user may mistakenly believe that the door is completely closed. Furthermore, in tool boxes mounted on aerial work platforms, if the door panel is not completely closed as described above, external forces such as vibrations of the vehicle may cause the door panel to open, requiring secure locking of the door panel by a handle device.

[0007] The present invention solves these conventional problems and aims to completely close the lid and door by reliably engaging and disengaging the lid and door engagement means with the housing-side receiving portion with a simple operation, thereby reliably locking and unlocking them, and further locking and unlocking them. [Means for solving the problem]

[0008] To achieve the above objective, the present invention A base having a fixing base that is fixed to the front of the lid, door panel, and a shaft cylinder portion that extends from the fixing base toward the rear of the panel, A locking shaft is inserted from the fixed base into the shaft cylinder so as to be able to move forward and backward and rotate, and is normally biased to retract toward the rear of the door panel by a first spring mechanism, A handle is attached to the locking shaft at one end via a pivot shaft so as to be able to rotate up and down relative to the base, On the other end of the handle, the base has a recess and a protrusion around the shaft cylinder portion, and between the recess and the protrusion is a locking claw engagement portion extending toward the shaft cylinder portion, A locking pawl is pivotally supported on the other end of the handle so as to be rotatable toward the locking pawl engagement portion and is detachably attached to the locking pawl engagement portion, and a locking pawl release operation unit is provided on the other end of the handle and is actuarily connected to the locking pawl, and rotates the locking pawl in a disengagement direction relative to the locking pawl engagement portion, A second spring means that biases the locking claw to rotate toward the locking claw engagement portion, and in its normal state engages the locking claw with the locking claw engagement portion, A stopper is positioned near the locking claw engagement portion and is detachably positioned to engage with the locking claw in the locking claw engagement portion, and is used to restrict and release the rotation of the locking claw. An actuator is operatively connected to the stopper and performs a locking operation to engage the stopper with the locking claw and an unlocking operation to disengage the stopper from the locking claw. Equipped with, A locking plate is detachably attached to the rear end of the locking shaft of the panel, to a receiving portion provided in the housing which is opened and closed by a lid or door. By pulling the handle up from the base in conjunction with operating the locking claw release operation unit, the elastic engagement between the locking claw and the locking claw engagement unit is released, unlocking the lock, and the tightening engagement between the locking plate and the receiving unit is released. Conversely, by pushing the handle back to the base in a single action, the locking plate is tightened against the receiving unit, and this tightening engagement is locked by the elastic engagement between the locking claw and the locking claw engagement unit. The locking mechanism between the locking claw and the locking claw engagement portion is engaged when the stopper engages with the locking claw by the locking operation of the actuator, and unlocked when the actuator unlocks. This is the gist of it.

[0009] Furthermore, it is preferable that the handle device be implemented in the following ways. (1) The fixed base is formed in a case shape with an opening on the front and a flange along the periphery of the opening. Between the upper and rear surfaces of the fixed base, a pair of handle guide sections are provided, each consisting of a pair of curved sections extending in a continuous arc shape in cross-section from the center of the upper surface and a pair of flat sections extending substantially vertically from the lower ends of these curved sections toward the lower surface. The shaft cylinder is positioned between the upper and rear surfaces of the fixed base, with one end protruding cylindrically from the rear surface between the curved sections of the pair of handle guide sections, and the other end facing forward. A locking shaft is inserted through the shaft cylinder, which protrudes outward in a cylindrical shape from the rear of the fixed base via a coil spring. The handle is formed in an inverted T shape and has a handle grip that extends laterally so as to be fitted into the opening of the fixed base below the pair of handle guides, and a handle lever that extends vertically from the longitudinal center of the handle grip so as to be fitted into the space between the pair of handle guides within the opening of the fixed base, with the handle lever connected to one end of the locking shaft.

[0010] In this case, a locking claw engagement mounting portion protrudes in a block shape between the flat portions of a pair of handle guide portions of the fixed base, a locking claw engagement portion made of a thin block is attached to the locking claw engagement mounting portion, the lower part of the locking claw engagement portion protrudes downward from the lower part of the locking claw engagement mounting portion to form a convex portion, a recess is formed between the locking claw engagement portion and the back surface of the fixed base so that the locking claw can be fitted and locked, the back surface of the locking claw engagement portion extends toward the shaft cylinder portion between these recess and convex portion and forms the locking surface of the locking claw, and the locking claw release operation portion is H The locking claw is attached to the handle lever via a pivot shaft and is rotatably positioned between the inner surface of the handle grip and the locking claw engagement portion. The locking claw protrudes from the center of the locking claw release operation portion toward the rear in a substantially L-shape in cross-section and has a claw portion that is convex upward at its rear end. A coil spring is interposed between the locking claw release operation portion and the inner surface of the handle grip as a second spring means, and it is desirable that the locking claw release operation portion is normally biased to rotate together with the locking claw from the inner surface of the handle grip toward the locking claw engagement portion.

[0011] In this case, the stopper has a locking claw locking portion having a semi-cylindrical shape at one end, a pivot shaft portion extending concentrically from the other end of the locking claw locking portion, an operating lever portion extending perpendicular to the axis of the pivot shaft portion from the outer circumferential surface of the pivot shaft portion, and an actuator engaging portion extending in the opposite direction to the locking claw locking portion on the top of the operating lever portion on the side opposite to the locking claw locking portion. A stopper mounting portion is provided at the lower center of the back of the fixed base, and the stopper is rotatably attached to the stopper mounting portion. One end of the semi-cylindrical locking claw locking portion is positioned inside the back of the fixed base, and the actuator engaging portion at the other end is positioned outside the back of the fixed base. The actuator is electrically operated and has a pivot shaft that can rotate in the forward or reverse direction, and it is desirable that the actuator engaging portion of the stopper and the pivot shaft of the actuator are operationally connected via a link mechanism.

[0012] (2) The actuators are fixed to the rear of the fixed base and attached to a joint plate extending to one side of the fixed base, and are arranged horizontally in parallel on one side of the fixed base.

[0013] (3) A display unit is mounted on the fixed base that displays the locking operation, unlocking operation, or both of the actuator in conjunction with the locking operation or unlocking operation of the actuator. [Effects of the Invention]

[0014] According to the handle device of the present invention, with the above configuration, by a one-action operation of pulling the handle from the base together with the unlocking operation of the locking claw, the elastic engagement between the locking claw and the locking claw engaging portion is disengaged and unlocked, and at the same time, the clamping engagement between the locking plate and the receiving portion is released. On the contrary, by a one-action operation of pushing the handle back to the base, the locking plate is clamped and engaged with the receiving portion, and this clamping engagement is locked by the elastic engagement between the locking claw and the locking claw engaging portion. The locking between the locking claw and the locking claw engaging portion is locked by the locking operation of the actuator, where the stopper engages with the locking claw, and is unlocked by the unlocking operation of the actuator. Therefore, with a simple operation of the handle, the locking plate on the lid side and the door side with respect to the receiving portion on the housing side can be reliably engaged and disengaged from the receiving portion on the housing side, and this can be reliably locked and unlocked, and further locked and unlocked. As a result, the lid and the door can be completely closed, achieving a unique and remarkable effect of the present invention.

Brief Description of the Drawings

[0015] [Figure 1] Figure (perspective view) showing the overall configuration of the handle device according to an embodiment of the present invention [Figure 2] Figure showing the overall configuration of the same device ((a) is a front view, (b) is a rear view, (c) is a plan view, (d) is a side view) [Figure 3] Figure showing the internal configuration of the same device (side cross-sectional view) [Figure 4] Figure showing the configuration of the base in particular of the same device (front view) [Figure 5] Figure showing the configuration of the rotation stopper in particular of the same device (front view) [Figure 6] Figure showing the configuration of the locking shaft in particular of the same device (perspective view) [Figure 7] Figure showing the configuration of the handle in particular of the same device (perspective view) [Figure 8] Figure showing the configuration of the locking claw engaging portion in particular of the same device (perspective view) [Figure 9] Figure showing the configuration of the locking claw and the locking claw unlocking operation portion in particular of the same device (perspective view) [Figure 10]The diagram shows the configuration of the stopper in particular ((a) is a front perspective view, (b) is a side view, and (c) is a rear perspective view). [Figure 11] A diagram (perspective view) showing the configuration of the lock plate in particular of the device. [Figure 12] The diagram shows an example of how the device is used ((a) is a front view, (b) is a rear view). [Modes for carrying out the invention]

[0016] Next, embodiments for carrying out this invention will be described with reference to the figures. Figures 1 and 2 show the overall configuration of the handle device, and Figure 3 shows the internal configuration of the handle device. Figures 4 to 11 show the configuration of each part of the handle device, respectively.

[0017] As previously described, the handle device of this invention is used for opening and closing, locking, unlocking, and locking lids and doors that are hinged to various types of enclosures, including toolboxes, cargo boxes, and various cabinets. In this embodiment, it is exemplified as being used for opening and closing, locking, unlocking, and locking the door of a toolbox mounted on a vehicle such as an aerial work platform. Here, although not specifically shown in the figures, the toolbox comprises a horizontally elongated box body with an opening on one side, and a horizontally elongated door (panel) connected to the lower part of the opening of the box body via a hinge so that the opening of the box body can be opened and closed, as shown in Patent Document 1. This handle device is fitted into openings formed on both the left and right sides of the upper part of the door (panel) and is integrally attached to the door.

[0018] As shown in Figures 1, 2, and 3, this handle device H (hereinafter referred to as "this device H") comprises a base 1, a locking shaft 2 mounted on the base 1 via a first spring means S1, a handle 3 attached to the locking shaft 2 via a pivot shaft 3P so as to be able to pivot up and down relative to the base 1, a locking claw engagement portion 4 integrally formed on the base 1, a locking claw 5A and a locking claw release operation portion 5B attached to the handle 3 via a second spring means S2, a stopper 6 positioned on the base 1 in close proximity to the locking claw engagement portion 4, and an actuator 7 operably connected to the stopper 6.

[0019] As shown in Figures 1 and 2, the base 1 has a fixed base 11 that is fixed to the front of the door panel, and a shaft cylinder portion 13A that extends from the fixed base 11 toward the back of the panel.

[0020] In this case, the fixed base 11 is formed integrally with the shaft cylinder portion 13A. As shown in Figures 1, 2, and 4, the fixed base 11 is formed in a case shape with an opening 110 on the front and a flange 111 along the entire periphery of the opening 110. The overall shape of the fixed base 11 is arbitrary, in this case it is a horizontally elongated rectangular case shape with an upper surface 11U, a lower surface 11D, left and right side surfaces 11L and 11R, a front surface 11F (opening 110), and a back surface 11B. Here, the upper surface 11U is formed as a curved surface 11U1 with a cross-sectional arc shape that is convex upward in the center in the left-right direction, and both sides are formed as gently sloping surfaces 11U2 toward the left and right side surfaces 11L and 11R. The lower surface 11D is formed as a gently curved surface with a cross-sectional arc shape that is convex downward in the whole. The left and right side surfaces 11L and 11R are formed as vertically elongated planes. The front surface 11F consists of the opening 110 and the flange 111 around it. The opening 110 is surrounded by the upper surface portion 11U, the lower surface portion 11D, and the left and right side portions 11L and 11R described above, and is generally a horizontally elongated rectangle overall, with an upwardly convex arc-shaped opening 110U in the center of the upper edge which forms part of the opening 110. This opening 110U is the front-side opening end of the internal space below the curved surface 11U1 in the center of the upper surface portion 11U. The flange 111 has a gently curved shape with an arc-shaped cross-section overall at its upper and lower edges, and the left and right edges are substantially straight. Mounting bosses with screw holes are provided at each of the four corners of the back surface of the flange 111. The back surface portion 11B is formed in generally the same shape as the outer shape of the opening 110 of the front surface portion 11F.

[0021] As shown in Figure 4, the fixed base 11 is further provided with a pair of handle guides 12, a shaft cylinder / lock claw engagement mounting part 13, a handle rotation restricting part 14, a stopper mounting part 15, and a pilot lamp mounting part 16, all integrally provided between the front part 11F, the top part 11U, and the rear part 11B.

[0022] The pair of handle guide sections 12 are located between the upper surface 11U and the rear surface 11B of the fixed base 11. They consist of a pair of curved sections 121 that extend in an arc shape in cross-section from both ends of the curved surface 11U1 in the center of the upper surface 11U, and a pair of flat sections 122 that extend substantially vertically from the lower ends of these curved sections 121 toward the lower surface 11D.

[0023] The shaft cylinder portion and lock claw engagement portion mounting portion 13 is located between the upper surface portion 11U and the rear surface portion 11B of the fixed base 11. It consists of a shaft cylinder portion 13A, one end of which protrudes cylindrically between the curved surfaces 121 of a pair of handle guide portions 12 from the rear surface portion 11B side to the middle of the front surface portion 11F direction, and the other end of which protrudes cylindrically to the outside from the rear surface portion 11B; and a block-shaped (rectangular parallelepiped-shaped) lock claw engagement portion mounting portion 13B, which protrudes between the flat surfaces 122 of a pair of handle guide portions 12 from the rear surface portion 11B side to the middle of the front surface portion 11F direction. A circular shaft insertion hole 131 is formed in the center of the shaft cylinder portion 13A, and a handle rotation guide portion 141 is formed to protrude in a roughly C-shaped convex form when viewed from the front along the inner circumference of one end face on the front side of the shaft cylinder portion 131. Both ends of the handle rotation guide portion 141 are directed toward the lower surface portion 11D, and a predetermined angle (in this case, 90°) is set between these ends to allow the rotation angle of the handle 3, which will be described later. This handle rotation guide portion 141 forms part of the handle rotation restricting portion 14, which will be described later. A rectangular groove 132 is formed in the center of the front surface of the lock claw engagement portion mounting portion 13B, and a screw hole 133 is provided at the bottom of the front surface of this groove 132, where the lock claw engagement portion 4 (see Figure 3), which will be described later, is attached.

[0024] As shown in Figures 3, 4, and 5, the handle rotation restricting section 14 consists of a handle rotation guide section 141 of the shaft cylinder section 13A within each handle guide section 12, and a rotation stopper 142 installed inside the handle rotation guide section 141. The handle rotation guide section 141 is as previously described. The rotation stopper 142 is a circular flat plate with a square (quadrilateral) hole 1420 formed in the center, and a small square (pentagonal) projection 1421 protruding from a part of its outer circumference. This rotation stopper 142 is incorporated into the handle rotation guide section 141 at the front (front end face) of the shaft cylinder section 13A between each handle guide section 12, and the projection 1421 is positioned to protrude between both ends of the handle rotation guide section 141. Thus, the rotation stopper 142 is positioned to rotate within a 90° angle range within the handle rotation guide section 141.

[0025] As shown in Figure 4, the stopper mounting portion 15 is for attaching the stopper 6 (see Figure 10), which will be described later, to the fixed base 11. A circular hole is drilled in the back portion 11B of the fixed base 11, directly below the lock claw engagement portion mounting portion 13B, through which the lock claw lock portion 61 of the stopper 6, which will be described later, can be inserted.

[0026] As shown in Figures 2 and 4, the pilot lamp mounting section 16 is for mounting the pilot lamp 16p, which will be described later. In this case, a circular hole is drilled in the flange 111 of the fixing base 11, near the upper corner of the flange 111, through which the pilot lamp can be inserted. A cylindrical portion protrudes from the back side of the flange 111, communicating with this hole.

[0027] As shown in Figure 3, the locking shaft 2 is inserted into the shaft cylinder portion 13A of the fixed base 11 so as to be able to move forward and backward and rotate, and is normally biased to retract toward the rear of the door panel by the first spring means S1.

[0028] In this case, as shown in Figure 6, the locking shaft 2 consists of a handle connecting shaft portion 21, which has a rectangular prism shape for a predetermined length range on one end facing the front and has a mounting shaft insertion hole 20 between both sides of that end; an intermediate small-diameter shaft portion 22, which is cylindrical with an outer diameter slightly larger than the cross-section of the handle connecting shaft portion 21 and is continuous with the handle connecting shaft portion 21 via a small-diameter circular groove with a narrow groove width that is inscribed within the cross-section of the rectangular prism of the handle connecting shaft portion 21; an intermediate large-diameter shaft portion 23, which is cylindrical with an outer diameter slightly larger than the cross-section of the intermediate small-diameter shaft portion 22 and is continuous with the intermediate large-diameter shaft portion 22; and a rectangular prism-shaped lock plate mounting shaft portion 24, which is continuous with the intermediate large-diameter shaft portion 23 and extends diagonally in a rhombic shape with an outer diameter smaller than the outer diameter of the intermediate large-diameter shaft portion 23. A screw hole 25 is formed on the axis of the locking shaft 2 from the end face of the lock plate mounting shaft portion 24 to the intermediate small-diameter shaft portion 22. In this manner, as shown in Figure 3, the locking shaft 2 is inserted through the shaft cylinder portion 13A of the shaft cylinder portion / lock claw engagement portion mounting portion 13, with the intermediate small diameter shaft portion 22 and intermediate large diameter shaft portion 23 positioned in the shaft cylinder portion 13A, the handle connecting shaft portion 21 at one end protruding from the shaft cylinder portion 13A inward toward the front portion 11F towards the back portion 11B, and the lock plate mounting shaft portion 24 at the other end protruding from the shaft cylinder portion 13A outward toward the back portion 13B. Thus, the locking shaft 2 has a coil spring (hereinafter referred to as coil spring S1) wound around its outer circumference as the first spring means S1, and a rotation stopper 142 is placed on the handle rotation guide portion 141 on the front end face of the shaft cylinder portion 13A within the opening 110 of the front portion 11F of the fixed base 11, and the locking shaft 2 is inserted into the shaft cylinder portion 13A. As a result, one end of the coil spring S1 around the locking shaft 2 is locked to the rear side of the handle rotation guide portion 141 of the shaft cylinder portion 13A, and the other end is locked to the intermediate large diameter shaft portion 23 of the locking shaft 2, so that the locking shaft 2 is positioned to move back and forth in the front-rear direction of the shaft cylinder portion 13A, and is normally biased to move backward in the direction of the rear portion 11B of the fixed base 11 by the coil spring S1, and the intermediate large diameter shaft portion 23 and the lock plate mounting shaft portion 24 of the locking shaft 2 protrude to the outside from the rear side of the shaft cylinder portion 13A.

[0029] As shown in Figure 3, the handle 3 is mounted at one end to the locking shaft 2 via a pivot shaft 3P so as to be able to pivot relative to the base 1.

[0030] In this case, as shown in Figure 7, the handle 3 is formed in an inverted T shape and has a handle grip 31 extending laterally and a handle lever 32 extending vertically from the longitudinal center of the handle grip 31. The handle grip 31 is made of an elongated rectangular plate that can be fitted into the opening 110 of the fixed base 11 below a pair of handle guide portions 12, and a locking claw mounting portion 310 is provided on its inner surface, formed in an elongated rectangular recess along its length, and a spring receiving portion 311 (see Figure 3) is provided in a circular recess at the longitudinal center of the locking claw mounting portion 310. The handle lever 32 consists of a pair of elongated rectangular levers that can be fitted and positioned between a pair of handle guide portions 12 within the opening 110 of the fixed base 11. Mounting shaft insertion holes 320 for the locking shaft 2 are symmetrically formed at the upper end of each lever, forming the bearing 321 for the locking shaft 2, and a mounting shaft insertion groove 323 for the locking claw 5A, described later, is formed on the lower side, forming the bearing 322 for the locking claw 5A. Thus, as shown in Figure 3, the handle 3 has its upper bearings 321 positioned on both sides of the handle connecting shaft portion 21 at one end of the locking shaft 2, and a pivot shaft 3P, which is a handle pin, is inserted between these bearings 321 and the mounting shaft insertion holes 320, 20 of the handle connecting shaft portion 21, connecting to one end of the locking shaft 2, and is mounted on the base 1 so as to be able to be raised and lowered and rotatably mounted.

[0031] As shown in Figure 3, the locking claw engagement portion 4 consists of a recess 4C0 and a protrusion 4C1 around the shaft cylinder portion 13A of the base 1 at the other end of the handle 3, and extends toward the shaft cylinder portion 13A between the recess 4C0 and the protrusion 4C1.

[0032] In this case, as shown in Figure 8, the locking claw engagement portion 4 consists of a relatively thin rectangular block with a U-shaped groove formed on its front surface, and a screw insertion hole 40 is provided in the center of the bottom of the groove on the front surface. As shown in Figure 3, this locking claw engagement portion 4 is positioned on the front surface of the locking claw engagement portion mounting portion 13B, and is attached by passing a screw N4 through the screw insertion hole 40 of the locking claw engagement portion 4 and fastening it to the screw hole 133 (see Figure 4) of the locking claw engagement portion mounting portion 13B. The lower part of this locking claw engagement portion 4 protrudes downward from the lower part of the locking claw engagement portion mounting portion 13B, forming a convex portion 4C1. The space between this locking claw engagement portion 4 and the back surface 11B of the fixed base 11 forms a recess 4C0 that allows the locking claw 5A to be fitted and locked. The space between these recesses 4C0 and the convex portion 4C1, that is, the back surface of the locking claw engagement portion 4, extends toward the shaft cylinder portion 13A, and this back surface is the locking surface of the locking claw 5A.

[0033] As shown in Figure 3, the locking claw 5A is pivotally supported on the other end of the handle 3 so as to be rotatable toward the locking claw engagement portion 4, and is detachably attached to the locking claw engagement portion 4. The locking claw release operation portion 5B is provided on the other end of the handle 3 and is actuarially connected to the locking claw 5A, and is provided so as to be rotatable toward the locking claw engagement portion 4 toward the locking claw engagement portion 4. The second spring mechanism S2 biases the locking claw 5A to rotate toward the locking claw engagement portion 4, and is provided so that the locking claw 5A can normally be engaged with the locking claw engagement portion 4.

[0034] As shown in Figure 3, the locking pawl release operation unit 5B is attached to the handle lever 32 via a pivot shaft 51 and is rotatably positioned between the inner surface of the handle grip 31 and the locking pawl engagement unit 4. The locking pawl 5A protrudes from the center of the locking pawl release operation unit 5B toward the rear in a substantially L-shape in cross-section and has an upwardly convex claw portion 5A2 (see Figure 9) at its rear end. A coil spring (hereinafter referred to as coil spring S2) is interposed as a second spring means S2 between the locking pawl release operation unit 5B and the inner surface of the handle grip 31, so that under normal conditions the locking pawl release operation unit 5B is biased to rotate together with the claw portion 5A2 toward the locking pawl engagement unit 4 from the inner surface of the handle grip 31.

[0035] In this case, the locking claw 5A is integrally formed with the locking claw release operation part 5B, as shown in Figure 9. The locking claw release operation part 5B has an operation bar 5B1 and a mounting part 5B2. The operation bar 5B1 is made of an elongated rectangular plate in plan view that is approximately the same length as the locking claw mounting part 310 of the handle grip 31 and protrudes slightly from the locking claw mounting part 310. One end edge of the long side, in this case the front end edge, is formed in a slightly convex shape upwards with a rectangular cross-section so that it can be fitted into the locking claw mounting part 310 of the handle grip 31. A circular concave spring receiving part 50 is also formed in the center of the front surface of this front end edge. The mounting part 5B2 is formed in a convex shape with a roughly trapezoidal cross-section upwards in the center of the length direction on the plane of the operation bar 5B1, and a rotating shaft 51 protrudes from both the left and right sides of the upper part. The locking claw 5A is provided in the center of the other end edge of the long side of the operation bar 5B1, in this case the rear end edge. The locking claw 5A protrudes from the center of the rear end edge of the operating bar 5B1 toward the rear in a substantially L-shape in cross-section, and has a base portion 5A1 extending from the center of the rear end edge of the operating bar 5B1, and a claw portion 5A2 that is convex upward from the rear end of the base portion 5A1. The base portion 5A1 is formed in an elongated substantially rectangular shape that extends toward the locking claw engagement portion 4. The claw portion 5A2 is formed in a substantially rectangular convex shape that extends upward from the rear edge of the base portion 5A1, that is, toward the locking claw engagement portion 4, and this claw portion 5A2 can be fitted and locked into a recess 4C0 between the locking claw engagement portion 4 and the rear surface portion 11B of the fixed base 11, and can be locked into the locking surface on the rear surface of the locking claw engagement portion 4. The locking claw 5A and the locking claw release operating part 5B are mounted on a bearing 322, with the mounting part 5B2 positioned between a pair of levers on the handle lever 32, and the rotating shaft 51 passing through the mounting shaft insertion groove 323. One end of the coil spring S2 is attached to the spring receiving part 50 on the front of the operating bar 5B1, and the other end of the coil spring S2 is attached to the spring receiving part 311 of the locking claw mounting part 310 of the handle grip 31, and is positioned along this locking claw mounting part 310.Thus, the locking pawl 5A and the locking pawl release operation unit 5B are rotatably mounted between the bearings 322 with the rotation axis 51 of the mounting unit 5B2 as the pivot point. Under normal conditions, the locking pawl 5A, the locking pawl release operation unit 5B and the locking pawl mounting unit 310 are biased to rotate rearward and upward from the locking pawl mounting unit 310, that is, toward the locking pawl engagement unit 4, and engage with the locking pawl engagement unit 4, thereby locking the handle 3. Furthermore, the lock on the handle 3 can be released by pulling the locking pawl release operation unit 5B, that is, by pulling the locking pawl release operation unit 5B toward the handle grip 31.

[0036] As shown in Figure 3, the stopper 6 is positioned near the locking claw engagement portion 4 and is detachably positioned on the locking claw 5A which is engaged with the locking claw engagement portion 4, and is provided to restrict and release the rotation of the locking claw 5A.

[0037] In this case, as shown in Figure 10, the stopper 6 has a locking claw portion 61 at one end which is semi-cylindrical in shape, with a plane parallel to its axis that is formed at an angle toward the outer surface of the semicircular cross-section at the edge of that end, and the other end which is cylindrical; a cylindrical rotating shaft portion 62 extending concentrically from the other end of the locking claw portion 61; an operating lever portion 63 extending from the outer surface of the rotating shaft portion 62 perpendicular to the axis of the rotating shaft portion 62 in a substantially fan shape with a semicircular top; and an actuator engaging portion 64 extending in a cylindrical shape in the opposite direction from the locking claw portion 61 on the side of the top of the operating lever portion 63 opposite to the locking claw portion 61. As shown in Figure 3, the stopper 6 is attached by passing one semi-cylindrical end of the locking claw locking portion 61 rotatably through a stopper mounting portion 15 (see Figure 4) located at the lower center of the rear portion 11B of the fixed base 11, that is, through a circular hole, into the inside of the rear portion 11B, while the actuator engaging portion 64 on the other end is positioned outside the rear portion 11B of the fixed base 11. Thus, when the stopper 6 is rotated and the plane of the lock claw locking portion 61 is oriented horizontally upward, this plane, including the slanted end edge, guides the lock claw 5A to rotate toward or toward the lock claw engaging portion 4, allowing the lock claw 5A to engage with and disengage from the lock claw engaging portion 4. When the plane of the lock claw locking portion 61, including the slanted end edge, is oriented perpendicularly to a predetermined side, this semi-cylindrical portion on one end becomes an obstacle, restricting the rotation of the lock claw 5A toward the lock claw engaging portion 4 when the lock claw 5A and the lock claw engaging portion 4 are engaged, and restricting the rotation of the lock claw 5A toward the lock claw engaging portion 4 when the lock claw 5A and the lock claw engaging portion 4 are disengaged, making it impossible for the lock claw 5A to engage with and disengage from the lock claw engaging portion 4.

[0038] As shown in Figure 2(b), the actuator 7 is actuated to the stopper 6 and performs a locking operation that engages the stopper 6 with the locking claw 5A (see Figure 3) and an unlocking operation that disengages the stopper 6 from the locking claw 5A (see Figure 3). The actuator 7 is fixed to the rear portion 11B of the fixed base 11 and attached to a joint plate 8 that extends to one side of the fixed base 11, and is arranged horizontally in parallel on one side of the fixed base 11.

[0039] In this case, the actuator 7 is a generally known electric actuator, and as shown in Figure 2(b), a rotating shaft 71 protrudes from the rear, and the rotating shaft 71 is driven to rotate in the forward direction by a locking operation of an operating part (not shown), and the rotating shaft 71 is driven to rotate in the reverse direction by an unlocking operation of the operating part.

[0040] In this case, as shown in Figures 1 and 2, the actuator 7 is attached to the fixed base 11 via a joint plate 8 and is operably connected to the stopper 6 via a joint arm 83. The joint plate 8 consists of an actuator mounting portion 82 and a fixed base mounting portion 81, which are integrally formed via a connecting portion 811. The actuator mounting portion 82 is formed in the shape of a horizontally elongated rectangular frame, slightly larger than the front of the actuator 7. A connecting portion 811 is formed perpendicular to one side of this actuator mounting portion 82, and the fixed base mounting portion 81 is formed in the shape of a flat plate corresponding to the rear portion 11B of the fixed base 11, with a cutout in this portion so that the intermediate large-diameter shaft portion 23 of the locking shaft 2 and the lock plate mounting shaft portion 24 can protrude from the fixed base 11. The actuator 7 is attached to the actuator mounting portion 82 of the joint plate 8 via mounting screws, and the fixed base mounting portion 81 is attached to the rear portion 11B of the fixed base 11 via mounting screws. Thus, the actuator 7 is integrally mounted on one side of the fixed base 11. The joint arm 83 consists of an elongated bar and has shaft insertion holes 831 and 832 at both ends. This joint arm 83 is positioned between the rotation shaft 71 of the actuator 7 and the actuator engagement portion 64 of the stopper 6 attached to the fixed base 11. The shaft insertion hole 831 at one end is linked to the rotation shaft 71 of the actuator 7 via a link plate 84, and the actuator engagement portion 64 of the stopper 6 is connected to the shaft insertion hole 832 at the other end, thereby connecting the actuator 7 and the stopper 6 in operation.

[0041] Furthermore, an operating unit (not shown) is electrically connected to this actuator 7 via a controller (not shown), and this operating unit is mounted at any location, such as near the driver's seat of the aerial work platform or at an appropriate position on the vehicle body. The operating unit may be connected to the actuator by a wire or by wireless connection. In the case of wireless connection, a smartphone may be used.

[0042] Furthermore, as shown in Figures 1 and 2, a display unit 16P is mounted on the fixed base 11 that displays the locking operation, unlocking operation, or both of the actuator 7 in conjunction with the operation of the actuator 7.

[0043] In this case, a pilot lamp 16p is used in the display unit 16P. The pilot lamp 16p is embedded in a pilot lamp mounting portion 16 provided near the upper corner of the flange 111 of the fixed base 11. In this case, the pilot lamp 16p lights up when the actuator 7 performs an unlocking operation by operating the control unit, and turns off when it performs a locking operation.

[0044] Thus, in this actuator 7, the locking operation is performed by the locking operation of the operating part. Specifically, the rotation shaft 71 of the actuator 7 is driven to rotate in the reverse direction, and the rotation of this rotation shaft 71 pulls the joint arm 83, causing the stopper 6 to rotate in the reverse direction, so that the plane of the locking claw locking part 61 of the stopper 6 is oriented perpendicular to one side, and the stopper 6 becomes locked. As a result, referring to Figure 3, when the locking claw 5A and the locking claw engaging part 4 are engaged, the stopper 6 restricts the rotation of the locking claw 5A toward the locking claw engaging part 4, and when the locking claw 5A and the locking claw engaging part 4 are disengaged, the stopper 6 restricts the rotation of the locking claw 5A toward the locking claw engaging part 4, so that the locking claw 5A cannot engage with or disengage from the locking claw engaging part 4. At this time, the pilot lamp 16p is turned off. Conversely, the actuator 7 can be unlocked by the unlocking operation of the operating part. Specifically, the rotation axis 71 of the actuator 7 is driven to rotate in the forward direction, and this rotation of the rotation axis 71 pushes the joint arm 83, causing the stopper 6 to rotate in the forward direction, so that the plane of the locking claw locking portion 61 of the stopper 6 is oriented horizontally upward, and the stopper 6 is unlocked. As a result, referring to Figure 3, the stopper 6 rotates and guides the locking claw 6 toward or toward the locking claw engaging portion 4, so that the locking claw 6 can engage with and disengage from the locking claw engaging portion 4. At this time, the pilot lamp 16p is illuminated.

[0045] As shown in Figures 1 and 2, a lock plate 9 is detachably attached to the rear end of the panel of the locking shaft 2 to a receiving portion (not shown) provided on the box body which is opened and closed by the door. Here, as shown in Figure 11, the lock plate 9 is formed in an elongated, roughly fan-shaped form with a trapezoidal tip and a semicircular base, and a square mounting hole 90 is formed at the base end at a diamond shape so that the lock plate mounting shaft portion 24 of the locking shaft 2 can be fitted into it. As shown in Figure 2, the lock plate 9 is fixed by passing the lock plate mounting shaft portion 24 of the locking shaft 2 through the mounting hole 90 at the base end and fastening a nut N9 to this lock plate mounting shaft portion 24 via a washer.

[0046] In this way, as shown in Figure 3, the device H is released when the handle 3 is pulled up from the base 1 in one action along with the operation of the lock claw release operation unit 5B, thereby disengaging the elastic engagement between the lock claw 5A and the lock claw engagement unit 4, and releasing the tightening engagement between the lock plate 9 and the receiving unit (on the box body side). Conversely, when the handle 3 is pushed back to the base 1 in one action, the lock plate 9 is tightened and engaged with the receiving unit (on the box body side), and this tightening engagement is locked by the elastic engagement between the lock claw 5A and the lock claw engagement unit 4. The lock between the lock claw 5A and the lock claw engagement unit 4 is locked when the actuator 7 is locked, and unlocked when the actuator 7 is unlocked. In this case, by gripping the handle 3 and simultaneously pulling the locking claw release operation part 5B towards the user, and lifting the handle 3 from the base 1 in one action, the elastic engagement between the locking claw 5A and the locking claw engagement part 4 at the end of the handle 3 is released, unlocking the handle 3 and releasing the tightening engagement between the locking plate 9 and the receiving part. Subsequently, by rotating the handle 3 90° in one predetermined direction, the locking plate 9 is disengaged from the position facing the receiving part and completely detached from the receiving part. Conversely, by rotating the handle 3 90° in the other predetermined direction, the locking plate 9 is returned to the position facing the receiving part and becomes capable of engaging with the receiving part. Subsequently, by simply pushing the handle 3 back into the base 1 in one action, the locking plate 9 is tightened and engaged with the receiving part, and this tightening engagement between the locking plate 9 and the receiving part of the handle 3 is locked at the end of the handle 3 when the locking claw 5A and the locking claw engagement part 4 elastically engage. The lock between the locking claw 5A and the locking claw engagement part 4 is locked when the actuator 7 performs a locking operation, causing the stopper 6 to engage with the locking claw 5A. Conversely, the lock is released when the actuator 7 performs an unlocking operation, causing the stopper 6 to disengage from the locking claw 5A.

[0047] Figure 12 shows an example of the use of this device H. In Figure 12, the solid line lock plate 9 is in a horizontal position and indicates the locked state of the door due to the locking operation of the actuator 7, while the dashed-dot line lock plate 9 is in a vertical position and indicates the unlocked state of the door due to the unlocking operation of the actuator 7. In this case, the device H is fitted in pairs into the openings in the doors (panels) formed on both the left and right sides of the upper part of the tool box door of the aerial work platform. The mounting bosses at the four corners of the rear of the flange 111 of the device H are passed through the holes formed at the four corners of each opening, and mounting screws are fastened to each mounting boss to integrally attach the device H to the door. In this initial state, the device H has the handle 3 folded down and fitted between a pair of handle guide portions 12 in the fixed base 11 of the base 1. This pulls the locking shaft 2 against the biasing force of the coil spring S1 to the opening 110 surface of the fixed base 11. The lock plate 9 attached to the lock plate mounting shaft portion 24 of the locking shaft 2 is then tightened and engaged with a receiving portion provided on the box body of the toolbox, as shown by the solid line in Figure 12. In this tightened and engaged state, the lock claw 5A and the lock claw engaging portion 4 at the end of the handle 3 are elastically engaged by the coil spring S2, locking it in place. This locked state is further locked by the locking operation of the actuator 7, which aligns the plane of the lock claw lock portion 61 of the stopper 6 perpendicular to one side. This stopper 6 restricts the rotation of the locking claw 5A outward from the locking claw engaging portion 4 when the locking claw 5A and the locking claw engaging portion 4 are engaged, preventing the locking claw 5A from disengaging from the locking claw engaging portion 4. At this time, the pilot lamp 16p is turned off. In this way, the toolbox door is locked.

[0048] When the door is unlocked, the actuator 7 is unlocked by the unlocking operation of the control unit. This causes the rotation axis 71 of the actuator 7 to rotate in the forward direction, pushing out the joint arm 83 and rotating the stopper 6 in the forward direction. The plane of the locking claw portion 61 of the stopper 6 is then turned horizontally upward, releasing the lock from the stopper 6. At this time, the pilot lamp 16p lights up to indicate to the user that the door is unlocked, alerting the user to the unlocked state. In this way, the door is unlocked. With the door unlocked, a single action of the handle 3—that is, by gripping the handle 3 and pulling the lock claw release operation part 5B, which is raised from between the pair of handle guide parts 12 inside the fixed base 11 of the base 1—releases the elastic engagement between the lock claw 5A and the lock claw engagement part 4 by the coil spring S2 at the end of the handle 3, unlocking the handle 3. At the same time, the locking shaft 2 is pushed out from the opening 110 surface of the front part 11F of the fixed base 11 toward the rear part 11B by the biasing force of the coil spring S1, and the lock plate 9 attached to the lock plate mounting shaft part 24 of the locking shaft 2 is separated from and opposed to the receiving part provided on the box body of the tool box, releasing the tightening engagement. Next, when the handle 3 is rotated in a predetermined direction, the locking shaft 2 rotates in the same direction. This rotation of the locking shaft 2 causes the lock plate 9 to rotate 90° upward from its position facing the receiving part of the box body, as shown by the dashed line in Figure 12, and completely detaches from the receiving part of the box body. As a result, the engagement between the lock plate 9 on the door side and the receiving part on the box body side is released, and the door can be opened and closed. Therefore, by pulling the door towards you using the handle 3, the opening of the box body is opened.

[0049] After opening and closing the door, when the door is closed and the handle 3 is rotated in a predetermined other direction, that is, in the return direction, the locking shaft 2 rotates in the same direction. This rotation of the locking shaft 2 causes the lock plate 9 to rotate from a position 90° away upward from the receiving portion of the box body to a position facing it, making it possible to engage with the receiving portion of the box body. Subsequently, with a single action of the handle 3, that is, by simply pushing the handle 3 back between the pair of handle guide portions 12 in the fixed base 11 of the base 1, the locking shaft 2 is pulled against the biasing force of the coil spring S1 from the rear portion 11B of the fixed base 11 to the opening 110 surface of the front portion 11F. The lock plate 9 attached to the lock plate mounting shaft portion 24 of the locking shaft 2 is then tightened and engaged with the receiving portion provided on the box body of the tool box, as shown by the solid line in Figure 12, and the lock claw 5A and the lock claw engaging portion 4 at the end of the handle 3 are elastically engaged by the coil spring S2, locking the handle 3. At this time, the elastic engagement between the locking claw 5A and the locking claw engaging portion 4 by the coil spring S2 can be confirmed by the user with a click sensation, so the engagement between the locking claw 5A and the locking claw engaging portion 4 can be confirmed operationally. When the locking operation of the operating unit is performed and the locking operation of the actuator 7 is executed, the plane of the locking claw locking portion 61 of the stopper 6 is turned perpendicular to one side, locking it and fixing the engagement state between the locking claw 5A and the locking claw engaging portion 4. With the locking claw 5A and the locking claw engaging portion 4 engaged by this stopper 6, the rotation of the locking claw 5A outward from the locking claw engaging portion 4 is restricted, and the locking claw 5A cannot disengage from the locking claw engaging portion 4, so the engagement between the locking claw 5A and the locking claw engaging portion 4 is reliably maintained. At this time, the pilot lamp 16p is turned off. In this way the door is locked.

[0050] As explained above, in this device H, by pulling the handle 3 from the base 1 in a single action along with pulling the lock claw release operation unit 5B, the elastic engagement between the lock claw 5A and the lock claw engagement unit 4 is released, unlocking the handle 3 and releasing the tightening engagement between the lock plate 9 and the receiving unit. Conversely, by simply pushing the handle 3 back to the base 1 in a single action, the lock plate 9 is tightened and engaged with the receiving unit, and this tightening engagement is locked by the elastic engagement between the lock claw 5A and the lock claw engagement unit 4. This lock between the lock claw 5A and the lock claw engagement unit 4 is locked by the locking operation of the actuator 7, which engages the stopper 6 with the lock claw 5A, and unlocked by the unlocking operation of the actuator 7. Thus, with a simple single action of operating the handle 3, the lock plate 9 on the door side can be reliably engaged and disengaged from the receiving unit on the box body side, and this can be reliably locked, unlocked, and further locked and unlocked. This allows the door to be securely locked to the box body, enabling it to be completely closed. Therefore, with this device H, the incomplete engagement between the lock plate 9 on the door side and the receiving part on the box body side, as in the conventional method, can be eliminated, and the user will not mistakenly perceive the door as being in an incompletely locked state.

[0051] Furthermore, this device H offers the following significant advantages through the following configurations: (1) The fixed base 11 is formed in a case shape with an opening 110 on the front surface 11F and a flange 111 along the entire periphery of the opening 110. Between the upper surface 11U and the rear surface 11B of the fixed base 11, a pair of handle guide portions 12 are provided, each consisting of a pair of curved surfaces 121 extending continuously from the center of the upper surface 11U in a circular arc shape in cross-section, and a pair of flat surfaces 122 extending substantially vertically from the lower ends of these curved surfaces 121 toward the lower surface 11D. The shaft cylinder portion 13A is positioned between the upper surface 11U and the rear surface 11B of the fixed base 11, with one end protruding cylindrically from the rear surface 11B between the curved surfaces 121 of the pair of handle guide portions 12, and the other end protruding cylindrically to the outside from the rear surface 11B of the fixed base 11. The locking shaft 2 is inserted through this shaft cylinder portion 13A via a coil spring S1. The handle 3 is formed in an inverted T shape and has a handle grip 31 that extends laterally so as to be fitted into the opening 110 of the fixed base 11 below a pair of handle guide portions 12, and a handle lever 32 that extends vertically from the longitudinal center of the handle grip 31 so as to be fitted into the opening 110 of the fixed base 11 between the pair of handle guide portions 12, with the handle lever 32 connected to one end of the locking shaft 2. In this way, the handle 3 is stored together with the fixing base 11 within the plane of the door panel, allowing it to be compactly stored almost flush with the door without protruding to the outside of the door. In this tool box for an aerial work platform, safety is ensured because the handle 3 does not get in the way and does not protrude to the outside of the vehicle body. Furthermore, by tilting the handle 3 between the pair of handle guide parts 12 of the fixing base 11, the lock plate 9 attached to the locking shaft 2 is reliably guided to the receiving part of the box body, and these lock plates 9 and the receiving part of the box body can be securely tightened and engaged. In addition, the inverted T-shape of the handle 3 makes it easy to grip the handle grip 31, improving operability.

[0052] In this case, a locking claw engagement mounting portion 13B protrudes in a block shape between the flat portions 122 of the pair of handle guide portions 12 of the fixed base 11. A locking claw engagement portion 4, which is made of a thin block, is attached to this locking claw engagement mounting portion 13B, and the lower part of the locking claw engagement portion 4 protrudes downward from the lower part of the locking claw engagement mounting portion 13B to form a convex portion 4C1. A recess 4C0 is formed between the locking claw engagement portion 4 and the back surface portion 11B of the fixed base 11 so that the locking claw 5A can be fitted and locked in place. The back surface of the locking claw engagement portion 4 extends toward the shaft cylinder portion 13A between these recess 4C0 and the convex portion 4C1, forming the locking surface of the locking claw 5A. The locking pawl release operation unit 5B is attached to the handle lever 32 via a pivot shaft 51 and is rotatably positioned between the inner surface of the handle grip 31 and the locking pawl engagement unit 4. The locking pawl 51A protrudes from the center of the locking pawl release operation unit 5B toward the rear in a substantially L-shape in cross-section and has an upwardly convex claw portion 5A2 at its rear end. A coil spring S2 is interposed between the locking pawl release operation unit 5B and the inner surface of the handle grip 31, so that under normal conditions the locking pawl release operation unit 5B is biased to rotate together with the locking pawl 5A2 from the inner surface of the handle grip 31 toward the locking pawl engagement unit 4. This design allows for reliable engagement and disengagement of the locking claw engagement portion 4 and the locking claw 5A, despite its simple structure. Furthermore, a click sensation is provided when the locking claw engagement portion 4 and the locking claw 5A engage, allowing the user to reliably recognize the engagement between the two.

[0053] In this case, the stopper 6 has a locking claw portion 61 with a semi-cylindrical shape at one end, a pivot shaft portion 62 extending concentrically from the other end of the locking claw portion 61, an operating lever portion 63 extending perpendicular to the axis of the pivot shaft portion 62 from the outer circumferential surface of the pivot shaft portion 62, and an actuator engaging portion 64 extending in the opposite direction from the locking claw portion 61 on the top of the operating lever portion 63, on the side opposite to the locking claw portion 61. The stopper 6 is rotatably attached to a stopper mounting portion 15 provided at the lower center of the rear portion 11B of the fixed base 11, with one end of the semi-cylindrical locking claw portion 61 positioned inside the rear portion 11B of the fixed base 11, and the actuator engaging portion 64 at the other end positioned outside the rear portion 11B of the fixed base 11. The actuator 7 is electrically operated and has a pivot shaft 71 that can rotate in either the forward or reverse direction. The actuator engagement portion 64 of the stopper 6 and the pivot shaft 71 of the actuator 7 are operationally connected via a link mechanism (a link mechanism consisting of the operating lever portion 63 of the stopper 6, the actuator engagement portion 64, the joint arm 83, and the link plate 84). In this manner, when the stopper 6 is rotated and the plane of the lock claw locking portion 61 is oriented horizontally upward, this plane guides the lock claw 5A to rotate toward or toward the lock claw engaging portion 4, allowing the lock claw 5A to engage with and disengage from the lock claw engaging portion 4. When the plane of the lock claw locking portion 61 is oriented perpendicularly to one side, the semi-cylindrical portion at this one end becomes an obstacle, restricting the rotation of the lock claw 5A toward the lock claw engaging portion 4 when the lock claw 5A and the lock claw engaging portion 4 are engaged, and restricting the rotation of the lock claw 5A toward the lock claw engaging portion 4 when the lock claw 5A and the lock claw engaging portion 4 are disengaged. Thus, despite its simple structure, the locked state of the lock claw 5A and the lock claw engaging portion 4 can be reliably fixed and locked.

[0054] Furthermore, the actuator 7 is fixed to the rear portion 11B of the fixed base 11 and attached to a joint plate 8 that extends to one side of the fixed base 11, and is arranged horizontally in parallel on one side of the fixed base 11. By doing so, the entire device H can be made thin and compactly installed without protruding significantly into the box body.

[0055] Furthermore, a display unit 16P, in this case a pilot lamp 16p, is mounted on the fixed base 11 to display the locking operation, unlocking operation, or both of the actuator 7 in conjunction with the operation of the actuator 7. This allows users to reliably recognize the locked and unlocked states of device H. This effectively prevents accidental operation of device H.

[0056] In this embodiment, the actuator 7 is provided horizontally in parallel on one side of the fixed base 11. However, the actuator 7 may also be arranged in parallel on the rear side 11B of the fixed base 11, with the pivot shaft 71 of the actuator 7 and the stopper 6 attached via a link mechanism, or the two may be directly connected. This method also produces the same effects and advantages as the above embodiment.

[0057] Furthermore, in this embodiment, the actuator 7 is electrically powered and has a pivot shaft 71, but the actuator 7 may also be electrically powered and have an operating lever that can move forward and backward, and this operating lever may be operably connected to a stopper. In addition, this actuator may be manually operated and mechanical. This method also produces the same effects and advantages as the above embodiment.

[0058] Furthermore, although this embodiment exemplifies the device H as being attached to the door (panel) of a tool box of an aerial work platform, it can be widely applied to the locking and unlocking of lids and doors that are hinged to various types of enclosures, including toolboxes, cargo boxes, and various cabinets, and can achieve the same effects as in the above embodiment. [Explanation of Symbols]

[0059] H Handle device (this device) 1 Base 11 Fixed base 110 Aperture 110U opening 111 Flange 11U top part 11U1 curved surface 11U2 Slope 11D Bottom part 11L side part 11R Side part 11F front section 11B Back part 12 Handle guide section 121 Curved surface part 122 Plane section 13. Shaft cylinder section / Locking claw engagement section mounting section 13A Shaft cylinder part 131 Shaft insertion hole 13B Locking claw engagement mounting part 132 Groove 133 screw holes 14 Handle rotation restricting mechanism 141 Handle rotation guide section 142 Rotating stopper 1420 holes 1421 Protrusion 15 Stopper mounting part 16. Display unit mounting section (pilot lamp mounting section) 16P display 16p Pilot Lamp 2. Locking shaft 20 Mounting shaft insertion hole 21 Handle connecting shaft 22 Intermediate small diameter shaft section 23 Intermediate large diameter shaft section 24 Lock plate mounting shaft 25 screw holes S1 Coil spring (first spring mechanism) 3P Rotating Axis 3 handles 31 Handle Grips 310 Locking claw mounting part 311 Spring support 32 Handle levers 320 Mounting shaft insertion hole 321 Bearing 322 Bearings 323 Mounting shaft insertion groove 4. Locking claw engagement part 40 Screw insertion holes N4 screw 4C0 recess 4C1 protrusion S2 Coil spring (second spring mechanism) 5A Locking claw 5A1 base 5A2 Claw part 5B Locking claw release operation part 5B1 Control bar 50 Spring support section 5B2 Mounting section 51 Rotation axis 6 Stopper 61 Locking claw locking part 62 Rotating shaft section 63 Operating lever section 64 Actuator engagement part 7 Actuators 71 Rotation axis 8 Joint Plates 81 Mounting part for fixed base 811 Connection section 82 Actuator mounting section 83 Joint Arm 831 Shaft insertion hole 832 Shaft insertion hole 84 Link Plate 9 Lock Plate 90 mounting holes N9 Nut

Claims

1. A base having a fixing base that is fixed to the front of the lid, door panel, and a shaft cylinder portion that extends from the fixing base toward the rear of the panel, A locking shaft is inserted from the fixed base into the shaft cylinder so as to be able to move forward and backward and rotate, and is normally biased to retract toward the rear of the door panel by a first spring mechanism, A handle is attached to the locking shaft at one end via a pivot shaft so as to be able to rotate up and down relative to the base, On the other end of the handle, the base has a recess and a protrusion around the shaft cylinder portion, and between the recess and the protrusion is a locking claw engagement portion extending toward the shaft cylinder portion, A locking pawl is pivotally supported on the other end of the handle so as to be rotatable toward the locking pawl engagement portion and is detachably attached to the locking pawl engagement portion, and a locking pawl release operation unit is provided on the other end of the handle and is actuarily connected to the locking pawl, and rotates the locking pawl in a disengagement direction relative to the locking pawl engagement portion, A second spring means that biases the locking claw to rotate toward the locking claw engagement portion, and in its normal state engages the locking claw with the locking claw engagement portion, A stopper is positioned near the locking claw engagement portion and is detachably positioned to engage with the locking claw in the locking claw engagement portion, and is used to restrict and release the rotation of the locking claw. An actuator is operatively connected to the stopper and performs a locking operation to engage the stopper with the locking claw and an unlocking operation to disengage the stopper from the locking claw. Equipped with, A locking plate is detachably attached to the rear end of the locking shaft of the panel, to a receiving portion provided in the housing which is opened and closed by a lid or door. By pulling the handle up from the base in conjunction with operating the locking claw release operation unit, the elastic engagement between the locking claw and the locking claw engagement unit is released, unlocking the lock, and the tightening engagement between the locking plate and the receiving unit is released. Conversely, by pushing the handle back to the base in a single action, the locking plate is tightened against the receiving unit, and this tightening engagement is locked by the elastic engagement between the locking claw and the locking claw engagement unit. The locking of the locking claw and the locking claw engagement portion is achieved when the actuator locks, causing the stopper to engage with the locking claw, and is unlocked when the actuator unlocks. A handle device characterized by the following features.

2. The fixed base is formed in a case shape with an opening on the front and a flange along the periphery of the opening. Between the upper and rear surfaces of the fixed base, a pair of handle guide sections are provided, each consisting of a pair of curved surfaces extending continuously from the center of the upper surface in a circular arc shape in cross-section, and a pair of flat surfaces extending substantially vertically from the lower ends of these curved surfaces toward the lower surface. The shaft cylinder is positioned between the upper and rear surfaces of the fixed base, with one end protruding cylindrically from the rear surface between the curved surfaces of the pair of handle guide sections, and the other end attached to the rear surface of the fixed base. The handle device according to claim 1, wherein a handle protrudes outward in a cylindrical shape from the shaft, a locking shaft is inserted through the shaft cylinder via a coil spring, the handle is formed in an inverted T shape and has a handle grip that extends laterally so as to be fitted into the opening of the fixed base below the pair of handle guides, and a handle lever that extends vertically from the longitudinal center of the handle grip so as to be fitted between the pair of handle guides within the opening of the fixed base, and the handle lever is connected to one end of the locking shaft.

3. A locking claw engagement mounting portion protrudes in a block shape between the flat surfaces of a pair of handle guide portions of the fixed base, and a locking claw engagement portion made of a thin block is attached to the locking claw engagement mounting portion, the lower part of the locking claw engagement portion protrudes downward from the lower part of the locking claw engagement mounting portion to form a convex portion, a recess is formed between the locking claw engagement portion and the back surface of the fixed base so that the locking claw can be fitted and locked, the back surface of the locking claw engagement portion extends toward the shaft cylinder between these recess and convex portion and forms the locking surface of the locking claw, and the locking claw release operation portion is the handle lever The handle mechanism according to claim 2, which is attached to the handle via a pivot shaft and rotatably positioned between the inner surface of the handle grip and the locking claw engagement portion, the locking claw protrudes from the center of the locking claw release operation portion toward the rearward direction in a substantially L-shape in cross-section and has a claw portion that is convex toward upward direction at its rear end, and a coil spring is interposed between the locking claw release operation portion and the inner surface of the handle grip as a second spring means, so that the locking claw release operation portion is normally biased to rotate together with the locking claw toward the locking claw engagement portion from the inner surface of the handle grip.

4. The handle device according to claim 1, wherein the stopper has a locking claw locking portion having a semi-cylindrical shape at one end, a pivot shaft portion extending concentrically from the other end of the locking claw locking portion, an operating lever portion extending perpendicular to the axis of the pivot shaft portion from the outer circumferential surface of the pivot shaft portion, and an actuator engaging portion extending in the opposite direction to the locking claw locking portion on the top of the operating lever portion on the side opposite to the locking claw locking portion, the stopper mounting portion is provided at the lower center of the rear of the fixed base and the stopper is rotatably attached to the stopper mounting portion, one end of the semi-cylindrical locking claw locking portion is positioned on the inside of the rear of the fixed base and the actuator engaging portion at the other end is positioned on the outside of the rear of the fixed base, the actuator is electrically operated and has a pivot shaft that can rotate in the forward or reverse direction, and the actuator engaging portion of the stopper and the pivot shaft of the actuator are operatedly connected via a link mechanism.

5. The handle device according to claim 1, wherein the actuator is fixed to the rear of the fixed base, attached to a joint plate extending to one side of the fixed base, and arranged horizontally in parallel on one side of the fixed base.

6. The handle device according to claim 1, wherein a display unit is mounted on a fixed base to display the locking operation, unlocking operation, or both of the actuator in conjunction with the operation of the actuator.

Images