Operation device

Abstract

To suppress the whole length of a key cylinder without impairing operability and to maintain crime prevention and easiness of opening / closing management.SOLUTION: An operation device, which includes a crescent 10 movably arranged in a device body 1, and a lock plate 20 allowing rotation of the crescent 10 with respect to the device body 1 when arranged in an unlock position, and preventing rotation of the crescent 10 with respect to the device body 1 when arranged in a lock position, further includes a key cylinder 30 rotatable in a locking direction and an unlocking direction with respect to a key cylinder storage part 1e when a key K is inserted from a front surface, in which the lock plate 20 is moved between the lock position and the unlock position by sliding with respect to the device body 1, an eccentric projection 33a penetrating a guide hole 22 of the lock plate 20 is provided on a bottom plate 33 of the key cylinder 30, and a key insertion hole 31 is provided in the key cylinder 30 in a state that a tip part of the key K is arranged on an eccentric projection 33a.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to an operating device for fixtures, such as a crescent lock or operating handle, which is attached to a sliding screen via the device body and has an operating part that is movably arranged relative to the device body. [Background technology]

[0002] Crescent locks for sliding windows and other fixtures already include a key cylinder mounted on the device body. Specifically, when the key cylinder is rotated in the locked position with the crescent engaged with the crescent receiver, an eccentric protrusion on the bottom plate of the key cylinder engages with a locking element mounted on the device body, causing the locking element to move to the locked position and engage with the crescent. Removing the key from this position prevents the key cylinder from being rotated in the unlocked position, maintaining the locking element in the locked position and preventing the crescent from moving to the unlocked position relative to the device body. This makes it difficult for someone without the key to unlock the crescent lock, preventing accidental opening of the sliding screen. This is advantageous in terms of security and ease of opening and closing management. Inserting the key from this position allows the key cylinder to be rotated in the unlocked position, moving the locking element to the unlocked position and disengaging the crescent. Therefore, the crescent can be placed in the unlocked position to open the sliding screen (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-41725 A (Figs. 5-7) Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, this type of operating device often uses a disc tumbler type key cylinder. That is, only when a key is inserted into the key insertion hole, the shear lines of the multiple disc tumblers interposed between the key cylinder and the key cylinder storage unit align, allowing the key cylinder to rotate relative to the key cylinder storage unit. In an operating device that uses this key cylinder, it is preferable to have as many disc tumblers as possible. That is, if the number of disc tumblers is small, the structure becomes simple, which may lead to unlocking without a key. Furthermore, if the number of disc tumblers is small, it becomes difficult to ensure randomness among multiple key cylinders, raising the concern that multiple key cylinders may be rotated with the same key. However, if the number of disc tumblers is increased in consideration of these points, the overall length of the key cylinder will increase, and the device body of the operating device to which it is applied will become larger. This may result in problems such as an increase in the height of the key cylinder storage unit alone, limiting the length of the handle and impairing the design.

[0005] One way to reduce the overall length of the key cylinder without reducing the number of disc tumblers is to make the bottom plate, which is the deepest part, thinner. However, in a key cylinder with a thin bottom plate, the tip of the inserted key penetrates and is exposed to the outside of the key cylinder, which could interfere with the locking member when the key cylinder is rotated. Therefore, to realize a linkage structure between the eccentric protrusion and the locking member while preventing interference with the protruding key, the linkage position between the eccentric protrusion and the locking member must be sufficiently separated from the bottom plate, which ultimately makes it difficult to reduce the dimensions of the device body.

[0006] By the way, if the tip of the key is cut off, it is possible to prevent it from protruding from the bottom plate. In other words, if the tip of the key is cut off by the amount that protrudes from the bottom plate, the above problem may be solved. However, the task of inserting a key with a flat tip into the key insertion hole is extremely complicated, and it significantly impairs operability.

[0007] In view of the above circumstances, the present invention aims to provide an operating device that can reduce the overall length of a key cylinder without impairing operability, while maintaining security and ease of opening and closing management. [Means for solving the problem]

[0008] In order to achieve the above object, the operating device according to the present invention is an operating device including an operating unit movably disposed on a device body, and a locking member movably disposed on the device body, which allows the operating unit to move relative to the device body when placed in an unlocked position, but engages with the operating unit to prevent the operating unit from moving relative to the device body when placed in a locked position, and the device body includes a key cylinder that can rotate in lock and unlock directions relative to a key cylinder storage section when a key is inserted from the front, and a locking member that links the key cylinder and the locking member, and locks the locking member when the key cylinder is rotated in the lock direction. a linking mechanism that moves the locking member to a locked position when the key cylinder is rotated in the unlocking direction, and that moves the locking member to the unlocked position when the key cylinder is rotated in the unlocking direction, and the locking member is moved between the locked position and the unlocked position by sliding relative to the device body, and the linking mechanism has an eccentric protrusion provided on a bottom plate of the key cylinder, and a guide surface that is provided on the locking member and engages with the peripheral surface of the eccentric protrusion to convert the rotation of the eccentric protrusion accompanying the rotation of the key cylinder into a sliding movement of the locking member, and the key cylinder is provided with a key insertion hole with the tip of the key positioned on the eccentric protrusion. [Effects of the Invention]

[0009] According to the present invention, the tip of the key is accommodated in an eccentric protrusion that protrudes from the bottom plate of the key cylinder and engages with the guide surface of the locking member, so the tip of the key is prevented from being exposed outside the key cylinder even if the bottom plate is made thin. Therefore, it is possible to reduce the number of disk tumblers or shorten the overall length of the key cylinder without cutting off the tip of the key, and there is no risk of the device body becoming larger. [Brief explanation of the drawings]

[0010] [Figure 1] 1A and 1B show a state in which an operating device according to an embodiment of the present invention is placed in a locked position and a locking member is placed in a locked position, where FIG. 1A is a view from the rear side and FIG. 1B is a longitudinal cross-sectional view. [Figure 2] 2A and 2B show a state in which the operating device shown in FIG. 1 is placed in a locked position and the locking member is placed in an unlocked position, where FIG. 2A is a view from the rear side and FIG. 2B is a vertical cross-sectional view. [Figure 3] 2A and 2B show the state in which the operating device shown in FIG. 1 is placed in the unlocked position and the locking member is placed in the unlocked position, where FIG. 2A is a view from the rear side and FIG. 2B is a vertical cross-sectional view. [Figure 4] This shows the key cylinder applied to the operating device shown in Figure 1 with the front surface facing upward, where (a) is a front view, (b) is a left side view, (c) is a right side view, (d) is a rear view, (e) is a plan view, (f) is a plan view, and (g) is a cross-sectional view taken along line X1-X1 in (c). [Figure 5] The key cylinder storage section of the device body of the operating device shown in Figure 1 is seen from the rear side, where (a) is a view of the state in which the key cylinder is stopped at the end in the unlocking direction, and (b) is a view of the state in which the key cylinder is stopped at the end in the locking direction. [Figure 6] 2A and 2B show a key cylinder that is applied to the operating device shown in FIG. 1, in which (a) is a cross-sectional view before a key is inserted, and (b) is a cross-sectional view after the key is inserted. [Figure 7]This shows the key cylinder before the key shown in Figure 6(a) is inserted, where (a) is a cross-sectional view of the part located between the flange portion and the slot, (b) is a cross-sectional view of the slot closest to the flange portion, (c) is a cross-sectional view of the next slot, and (d) is a cross-sectional view of the slot where the stopper plate is located. [Figure 8] This shows the key cylinder with the key shown in Figure 6(b) inserted, where (a) is a cross-sectional view of the part located between the flange portion and the slot, (b) is a cross-sectional view of the slot closest to the flange portion, (c) is a cross-sectional view of the next slot, and (d) is a cross-sectional view of the slot where the stopper plate is located. [Figure 9] This shows the relationship between the rotational position of the key cylinder and the locking member in the operating device shown in Figure 1, where (a) is a diagram of the key cylinder stopped at the end in the unlocking direction, (b) is a diagram of the key cylinder rotated approximately 45° counterclockwise from the position in (a), (c) is a diagram of the key cylinder rotated approximately 135° counterclockwise from the position in (a), and (d) is a diagram of the key cylinder rotated approximately 180° from the position in (a). [Figure 10] 10A shows an operating device that is a modified example of the present invention, where FIG. 10A is a view from the rear side when the locking member is in the unlocked position, and FIG. 10B is a view from the rear side when the locking member is in the locked position. DETAILED DESCRIPTION OF THE INVENTION

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an operating device according to the present invention will now be described in detail with reference to the accompanying drawings. 1 to 3 show an operating device according to an embodiment of the present invention. The operating device illustrated here is provided as a crescent lock installed between the inner and outer sliding screens of a double sliding window. Although not explicitly shown in the figures, the crescent lock is installed, for example, on the inner surface of the vertical frame that joins the inner screen, and prevents the inner and outer screens from moving by engaging with a crescent receiving portion (not shown) installed on the vertical frame that joins the outer screen. The device includes a device main body 1. The device main body 1 is attached to the outer surface of the joining frame, forming a vertically elongated rectangular parallelepiped with an open surface that contacts the joined surface. For convenience, the following description will identify the top and bottom of the device main body 1 in the position attached to the joining frame, and will refer to the open surface as the rear surface and the opposing surface as the front surface.

[0012] In the illustrated example, the device body 1 is configured with a case 1a molded from resin or metal and a metal reinforcing member 1b disposed inside the case 1a. Note that the reinforcing member 1b is not necessarily required. The device body 1 is provided with a crescent (operating unit) 10 on the front and a lock plate (locking member) 20 disposed inside.

[0013] The crescent 10 comprises a crescent body 11 with a circular dish-like outer shape and a support shaft 12 provided at the center of the crescent body 11, with the support shaft 12 perpendicular to the front surface of the device body 1 and supported by the reinforcing material 1b of the device body 1 in a state in which it can rotate around the axis of the support shaft 12. The crescent body 11 is the part that engages with the crescent receiving portion (not shown) of the outer screen by rotating when the outer and inner screens are both positioned in their closed positions.

[0014] The crescent 10 includes a handle portion 13 and an anti-rotation plate 14. The handle portion 13 extends radially from the crescent body 11 and rotates integrally with the crescent body 11. In the illustrated example, the handle portion 13 is provided so that when the crescent body 11 engages with a crescent receiving portion (not shown), the handle portion 13 extends upward relative to the device body 1, and when the crescent body 11 disengages from the crescent receiving portion (not shown), the handle portion 13 extends downward relative to the device body 1. The anti-rotation plate 14 is a plate-shaped member provided on a portion of the support shaft 12 that is located inside the device body 1, and rotates integrally with the crescent body 11. The anti-rotation plate 14 is provided with a spring receiving portion 14a and an engaging protrusion 14b.

[0015] The spring receiving portion 14a protrudes rearward from the anti-rotation plate 14 to provide a neutral spring 2 between the spring receiving portion 14a and the spring hooking portion 1c provided on the device body 1. In the illustrated example, when the operating device is in the locked position and viewed from the rear, as shown in FIG. 1(a), the spring receiving portion 14a is located at a position corresponding to 9 o'clock on the circumference of the support shaft 12 when the handle portion 13 extends upward relative to the device body 1. The spring hooking portion 1c is located above the spring receiving portion 14a. When the handle portion 13 is operated to move the operating device to the unlocked position from this position, the spring receiving portion 14a rotates counterclockwise and passes below the support shaft 12. As shown in FIG. 3(a), when the handle portion 13 extends downward, the spring receiving portion 14a is located at a position corresponding to 3 o'clock on the circumference of the support shaft 12. As a result, the spring force of the neutral spring 2 constantly maintains the handle portion 13 in an upward or downward extended state.

[0016] Engagement protrusion 14b protrudes from anti-rotation plate 14 toward the rear. More specifically, when the operating device is in the locked position and viewed from the rear, as shown in Figure 1(a), engagement protrusion 14b is provided between spring receiving portion 14a, located at the 9 o'clock position, and the 6 o'clock position, and engagement surface 14c is configured along a substantially vertical direction at the 6 o'clock position. When handle portion 13 is operated, engagement protrusion 14b rotates together with anti-rotation plate 14.

[0017] The lock plate 20 is a plate-like member disposed below the anti-rotation plate 14 inside the device body 1 and can slide up and down using the inner surfaces 1d of both side walls of the device body 1 as guides. The lock plate 20 has an abutment surface 21 and a guide hole 22. The abutment surface 21 is provided on the upper edge of the lock plate 20. When the handle portion 13 extends upward and the lock plate 20 moves upward to the locked position, the abutment surface 21 abuts against the engagement surface 14c of the anti-rotation plate 14, preventing counterclockwise rotation of the anti-rotation plate 14. When the lock plate 20 moves downward relative to the device body 1 to the unlocked position, the engagement between the anti-rotation plate 14 and the abutment surface 21 is released, allowing the anti-rotation plate 14 to rotate counterclockwise relative to the device body 1. The guide hole 22 is a through-hole through which an eccentric protrusion 33a of a key cylinder (described later) passes and which engages with the eccentric protrusion 33a via its inner circumferential surface, which serves as a guide surface, and is provided in the lower part of the lock plate 20. The detailed shape of the guide hole 22 will be described later.

[0018] The device body 1 is also provided with a key cylinder housing 1e in its lower portion, and a key cylinder 30 is provided in the key cylinder housing 1e. The key cylinder housing 1e has a circular sliding hole 1f formed in its center, with its axis approximately parallel to that of the support shaft 12 and penetrating from the front to the rear of the device body 1. As shown in FIGS. 4 to 9, the key cylinder 30 is cylindrical and has a flange 30a on the front side. The outer diameter of the flange 30a is sized to allow it to be inserted into the sliding hole 1f of the key cylinder housing 1e. The key cylinder 30 is rotatably disposed within the sliding hole 1f with the flange 30a facing the front side.

[0019] The key cylinder 30 is provided with a key insertion hole 31 and three slots 32A, 32B, and 32C. The key insertion hole 31 is a through hole formed from the front surface of the key cylinder 30 along the axial direction of the key cylinder 30. A locking / unlocking key K can be inserted into this key insertion hole 31 from the front surface of the key cylinder 30. In the illustrated example, the key insertion hole 31 has an asymmetrical cross section with different widths on one side and the other side, so that only a key K positioned in the correct orientation can be inserted.

[0020] The slots 32A, 32B, and 32C each penetrate the key cylinder 30 in a direction perpendicular to the axis of the key cylinder 30 and are arranged parallel to each other in the axial direction of the key cylinder 30. As shown in FIGS. 7 and 8, the slots 32A, 32B, and 32C are formed to have the same shape and include a locking step 32a and a biasing step 32b. The locking step 32a and the biasing step 32b extend in a direction perpendicular to the extension direction of the slots 32A, 32B, and 32C. The locking step 32a is provided to protrude toward one opening of the slots 32A, 32B, and 32C (hereinafter, referred to as the retraction-side opening 32c when distinguishing between them), and the biasing step 32b is provided to protrude toward the other opening of the slots 32A, 32B, and 32C (hereinafter, referred to as the protrusion-side opening 32d when distinguishing between them).

[0021] Disk tumblers 40A and 40B are disposed in the two slots 32A and 32B closest to the flange portion 30a, respectively, and a stopper plate 40C is disposed in the slot 32C away from the flange portion 30a. The disk tumblers 40A and 40B and the stopper plate 40C are flat plates sized to fit within the slots 32A, 32B, and 32C, respectively, and are disposed in the slots 32A, 32B, and 32C so as to be slidable along the extension direction of the slots 32A, 32B, and 32C. The disk tumblers 40A and 40B and the stopper plate 40C are provided with locking projections 40a and biasing projections 40b. The locking projections 40a come into contact with the locking steps 32a of the slots 32A, 32B, and 32C, thereby limiting the protruding positions of the ends of the disc tumblers 40A and 40B and the end of the stopper plate 40C that protrude from the peripheral surface of the key cylinder 30 through the protrusion-side opening 32d. The biasing projections 40b function to maintain the disc tumblers 40A and 40B and the stopper plate 40C in their protruding positions by the biasing force of a biasing member (not shown) that is interposed between the biasing projections 40b and the biasing steps 32b of the slots 32A, 32B, and 32C.

[0022] The disc tumblers 40A, 40B and the stopper plate 40C are provided with key through holes 41, 42, and 43. When a key K is inserted into the key cylinder 30 from the front side through the key insertion hole 31, the key through holes 41, 42 formed in the disc tumblers 40A, 40B abut against the key grooves k1, k2, thereby positioning the ends of the disc tumblers 40A, 40B in the slots 32A, 32B at their respective accommodation positions against the biasing force of the biasing member. The disc tumbler 40A adjacent to the flange portion 30a and the disc tumbler 40B distant from the flange portion 30a have different positions of the edges 41a, 42a adjacent to the retraction-side opening 32c in the key through holes 41, 42. As shown in FIG. 6 , the two disc tumblers 40A, 40B are simultaneously positioned at their accommodation positions only when a key K having a corresponding key profile is inserted. On the other hand, the key through hole 43 formed in the stopper plate 40C allows the key K inserted into the key insertion hole 31 to pass through, and the edge portion adjacent to the retraction-side opening 32c is open. In other words, regardless of what kind of key K is inserted into the key cylinder 30, the end portion of the stopper plate 40C is maintained in a state where it protrudes from the peripheral surface of the key cylinder 30.

[0023] Although not shown in the drawings, an arc-shaped groove is provided in the sliding hole 1f of the key cylinder housing 1e at a portion corresponding to the stopper plate 40C so that the key cylinder 30 can only rotate within a 180° range even when the end of the stopper plate 40C protrudes. Also, an accommodation groove is provided in the sliding hole 1f of the key cylinder housing 1e at a portion facing the two disc tumblers 40A, 40B so that the ends of the disc tumblers 40A, 40B can be accommodated only at both ends of the 180° rotation of the key cylinder 30.

[0024] The key cylinder 30 also has an eccentric protrusion 33a on the rear end surface of the bottom plate 33, which is located closer to the rear of the device body 1 than the stopper plate 40C. The eccentric protrusion 33a has a generally rectangular columnar cross section and is formed on the rear end surface of the bottom plate 33 at a position that includes one end of the key insertion hole 31. This one end of the key insertion hole 31 is the end that is located at the tip end Ka of the key K. That is, the key K inserted into the key cylinder 30 is formed so that its insertion tip is slanted to facilitate insertion. The eccentric protrusion 33a is provided on the bottom plate 33 so as to be located at the end that is the most distal end when the key K is inserted into the key insertion hole 31 in the correct orientation. The protruding height of the eccentric protrusion 33a is dimensioned to accommodate the tip end Ka of the key K that protrudes from the rear surface of the bottom plate 33 when the key K is fully inserted into the key insertion hole 31 of the key cylinder 30. In this embodiment, the thickness of the bottom plate 33 is configured to be thin enough that when a key K is inserted into the key insertion hole 31 of the key cylinder 30, the tip portion Ka of the key K penetrates the bottom plate 33 and protrudes, and the tip portion Ka of the key K protruding from the bottom plate 33 is accommodated in the key K hole provided in the eccentric protrusion 33a.

[0025] The external dimensions of the eccentric protrusion 33a are configured so that it can be inserted into the guide hole 22 of the lock plate 20, and can slide the lock plate 20 between the locked and unlocked positions via the guide hole 22 when the key cylinder 30 is rotated. That is, as shown in Figure 9(a), when the lock plate 20 is in the unlocked position, the key insertion hole 31 of the key cylinder 30 extends vertically, and the eccentric protrusion 33a is positioned downward. At this time, the lock plate 20 abuts against the eccentric protrusion 33a via the upper inner circumferential surface 22a and the left inner circumferential surface (lock-side engagement surface and unlock-side engagement surface) 22b of the guide hole 22 in Figure 9(a), and a gap is secured between the lock plate 20 and the lower inner circumferential surface 22c and the right inner circumferential surface 22d of the guide hole 22.

[0026] 9(a) , when the key cylinder 30 is rotated counterclockwise (locking direction) from this state, the upper right corner of the eccentric protrusion 33a presses against the upper inner circumferential surface 22a of the guide hole 22, causing the lock plate 20 to begin sliding upward. As the key cylinder 30 further rotates in the same direction, as shown in FIGS. 9(b) and 9(c), the right side and lower right corner of the eccentric protrusion 33a successively come into contact with the upper inner circumferential surface 22a of the guide hole 22, causing the lock plate 20 to move upward. Finally, when the key cylinder 30 has rotated 180°, the lock plate 20 is positioned in the locked position as shown in FIG. 9(d). At this time, the eccentric protrusion 33a is located above the key insertion hole 31, which extends vertically, and is in contact with the upper inner circumferential surface 22a and the left inner circumferential surface 22b of the guide hole 22 in FIG. 9(d). When the key cylinder 30 is rotated clockwise (unlock direction) from the above-described state, the eccentric protrusions 33a sequentially come into contact with the lower inner surface 22c of the guide hole 22, thereby returning to the state shown in Figure 9(a).

[0027] With the crescent lock configured as described above, when the crescent 10 is engaged with the crescent receiving portion (not shown), inserting the key K into the key cylinder 30 and rotating it in the locking direction places the lock plate 20 in the locked position, and the engagement surface 14c of the engagement protrusion 14b on the anti-rotation plate 14 faces the abutment surface 21 of the lock plate 20. Therefore, the crescent 10 cannot be rotated in the unlocking direction, and the crescent lock can be maintained in a locked state. As described above, rotation of the key cylinder 30 is permitted only when the corresponding key K is inserted. This prevents the outer and inner shutters from being opened by someone who does not have the key K, which is advantageous in terms of security and ease of opening and closing management.

[0028] If the key K is inserted into the key cylinder 30 from the above state and rotated in the unlock direction, the lock plate 20 moves to the unlock position, and the engagement surface 14c of the anti-rotation plate 14 is no longer facing the abutment surface 21 of the lock plate 20. Therefore, the crescent 10 can be rotated in the unlock direction, and the outer and inner shutters can be opened.

[0029] During the above-described operation, in the crescent lock, the tip Ka of the key K protruding from the rear surface of the bottom plate 33 is maintained positioned in the key K hole of the eccentric projection 33a, which makes it possible to make the bottom plate 33 thinner without causing interference between the key K and the lock plate 20. This makes it possible to reduce the number of disc tumblers 40A, 40B and to reduce the overall length of the key cylinder 30 without cutting off the tip Ka of the key K, eliminating the risk of the dimensions of the device body 1 to which it is applied becoming larger.

[0030] Furthermore, because the rotation of the key cylinder 30 is limited to 180 degrees when the eccentric protrusion 33a abuts against the left edge of the guide hole 22, the force applied to the stopper plate 40C is reduced or eliminated. This eliminates the risk of deformation of the stopper plate 40C even when the thickness of the stopper plate 40C is reduced, and also makes it possible to reduce the overall length of the key cylinder 30.

[0031] In the above-described embodiment, a crescent lock is used as an example of an operating device, but the present invention can be applied to other devices as long as the operating unit is movably disposed relative to the device body. In this case, the movement of the operating unit is not necessarily limited to rotation; for example, the operating unit may move in a linear direction. The device body does not need to be made of a resin case and a metal reinforcing material. The rotation angle of the key cylinder 30 does not need to be 180°, and the rotation direction of the key cylinder 30 may also be reversed.

[0032] Furthermore, in the above-described embodiment, key cylinder 30 is illustrated as including two disc tumblers 40A, 40B and one stopper plate 40C, but the number of disc tumblers is not limited to two.

[0033] Furthermore, in the above-described embodiment, the inner peripheral surface of the guide hole 22 is illustrated as a square-shaped guide surface that engages with the eccentric protrusion 33a, but this is not necessarily limited to this. The locking member does not necessarily have to be the lock plate 20, which is a sliding flat plate. Furthermore, while the locking member is disposed below the device body and the anti-rotation plate is disposed above the device body in FIG. 1, the locking member may be configured to be disposed above the anti-rotation plate.

[0034] Furthermore, in the above-described embodiment, anti-rotation plate 14 is provided with engagement protrusion 14b, while lock plate 20 is provided with abutment surface 21. However, the present invention is not limited to this. For example, as shown in a modified example in FIG. 10 , anti-rotation plate 114, which rotates integrally with handle 113, may be provided with engagement recess 114a on a portion of the circumference around the center of rotation, while lock member 120 may be provided with engagement protrusion 120a that can fit into anti-rotation plate 114. That is, as shown in FIG. 10( a), when lock member 120 is positioned in the unlock position via eccentric protrusion 133a due to rotation of key cylinder 130, engagement protrusion 120a deviates from engagement recess 114a, making it possible to rotate anti-rotation plate 114 integrally with handle 113 relative to device main body 101. 10(b), when the locking member 120 is placed in the locked position by rotation of the key cylinder 130, the engaging protrusion 120a fits into the engaging recess 114a, preventing the rotation prevention plate 114 and the handle portion 113 from rotating relative to the device main body 101. It goes without saying that in this modified example as well, the key insertion hole 131 is formed at a position that includes the eccentric protrusion 133a.

[0035] As described above, the operating device according to the present invention is an operating device including an operating unit movably disposed on the device body, and a locking member movably disposed on the device body, which allows movement of the operating unit relative to the device body when placed in the unlocked position, and which engages with the operating unit to prevent movement of the operating unit relative to the device body when placed in the locked position, and which includes a key cylinder that can rotate in lock and unlock directions relative to a key cylinder storage section when a key is inserted from the front, and a locking member that links the key cylinder and the locking member, and which engages with the key cylinder when the key cylinder is rotated in the lock direction. a linking mechanism that moves the locking member to a locked position when the key cylinder is rotated in the unlocking direction, and that moves the locking member to the unlocked position when the key cylinder is rotated in the unlocking direction, and the locking member is moved between the locked position and the unlocked position by sliding relative to the device body, and the linking mechanism has an eccentric protrusion provided on a bottom plate of the key cylinder, and a guide surface that is provided on the locking member and engages with the peripheral surface of the eccentric protrusion to convert the rotation of the eccentric protrusion accompanying the rotation of the key cylinder into a sliding movement of the locking member, and the key cylinder is characterized in that a key insertion hole is provided in a state in which the tip of the key is positioned on the eccentric protrusion. According to this invention, the tip of the key is accommodated in an eccentric protrusion that protrudes from the bottom plate of the key cylinder and engages with the guide surface of the locking member, so the tip of the key is prevented from being exposed outside the key cylinder even if the bottom plate is made thin. Therefore, it is possible to reduce the number of disk tumblers or shorten the overall length of the key cylinder without cutting off the tip of the key, eliminating the risk of the device body becoming larger.

[0036] Furthermore, the present invention is characterized in that, in the above-described operating device, the guide surface is provided with a locking side engaging surface that engages with the eccentric protrusion at the locked position when the key cylinder is rotated in the locking direction, thereby preventing further rotation in the same direction, and an unlocking side engaging surface that engages with the eccentric protrusion at the unlocked position when the key cylinder is rotated in the unlocking direction, thereby preventing further rotation in the same direction. According to this invention, there is no need to provide a separate member for restricting the movement of the locking member, and the structure can be simplified.

[0037] Furthermore, the present invention is characterized in that, in the above-described operating device, the locking side engaging surface and the unlocking side engaging surface are configured on the inner surface of a rectangular guide hole formed in the locking member, and the eccentric protrusion is formed so that its cross section is prismatic, and is engaged with the locking side engaging surface and the unlocking side engaging surface via one side surface. According to this invention, the eccentric protrusion comes into contact with the locking side engaging surface and the unlocking side engaging surface, thereby limiting the rotation range of the key cylinder to 180°.

[0038] The present invention is also characterized in that, in the above-mentioned operating device, the operating part is a crescent rotatably arranged on the device body, the crescent is provided with an engagement protrusion on a part of the circumference centered on the center of rotation, and the locking member is provided with an abutment surface that engages with the engagement protrusion when placed in the locked position. According to this invention, the engagement of the engagement projection with the abutment surface prevents the crescent from rotating relative to the device body. [Explanation of symbols]

[0039] 1,101 device body, 1e key cylinder storage section, 1f slide hole, 10 crescent, 11 crescent body, 12 support shaft, 13,113 handle section, 14,114 anti-rotation plate, 14b,120a engagement protrusion, 14c engagement surface, 20 lock plate, 21 abutment surface, 22 guide hole, 22b left inner peripheral surface, 30,130 key cylinder, 31,131 key insertion hole, 33 bottom plate, 33a,133a eccentric protrusion, 40A,40B disk tumbler, K key, Ka tip section, 114a engagement recess, 120 lock member

Claims

1. An operation unit movably disposed on the device body; a locking member that is movably disposed on the device body, and that allows the operation unit to move relative to the device body when placed at an unlocked position, and that engages with the operation unit to prevent the operation unit from moving relative to the device body when placed at a locked position; An operating device comprising: The device body is provided with a key cylinder that is rotatable in a locking direction and an unlocking direction with respect to a key cylinder storage section when a key is inserted from the front side, and a linking mechanism that links the key cylinder and the locking member, and moves the locking member to the locked position when the key cylinder is rotated in the locking direction, and moves the locking member to the unlocked position when the key cylinder is rotated in the unlocking direction, the locking member is moved between the locked position and the unlocked position by sliding relative to the device body; the linking mechanism includes an eccentric protrusion provided on a bottom plate of the key cylinder, and a guide surface provided on the locking member, the guide surface engaging with a peripheral surface of the eccentric protrusion to convert a rotation of the eccentric protrusion accompanying a rotation of the key cylinder into a sliding movement of the locking member, The operating device, wherein the key cylinder is provided with a key insertion hole with a tip end of the key positioned on the eccentric protrusion.

2. The guide surface has a locking side engaging surface that engages with the eccentric protrusion at the locking position when the key cylinder is rotated in the locking direction to prevent the key cylinder from further rotating in the same direction; The operating device according to claim 1, further comprising an unlock side engaging surface which, when rotated in the unlock direction, engages with the eccentric protrusion at the unlock position to prevent further rotation in the same direction.

3. the locking side engaging surface and the unlocking side engaging surface are configured on an inner peripheral surface of a rectangular guide hole formed in the locking member, 3. The operating device according to claim 2, wherein the eccentric projection is formed so that its cross section is prismatic, and is engaged with the locking side engaging surface and the unlocking side engaging surface via one side surface.

4. a rotation prevention plate that rotates in response to operation of the operation unit is provided on the device body; The anti-rotation plate is provided with an engagement protrusion on a part of a circumference centered on the center of rotation, The operating device according to claim 1 , wherein the locking member is provided with an abutment surface that engages with the engagement projection when the locking member is disposed at the locking position.

5. a rotation prevention plate that rotates in response to operation of the operation unit is provided on the device body; The anti-rotation plate is provided with an engagement recess on a part of a circumference centered on the center of rotation, 2. The operating device according to claim 1, wherein the locking member is provided with an engagement protrusion that engages with the engagement recess when the locking member is disposed at the locking position.

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