Locking opening / closing device

Abstract

In a state in which a front panel of a housing is opened, this automatic teller machine sets a rotation restriction part to a restriction state and, when a lock is rotated from an unlocking angle, brings a restriction arm into contact with a restriction location to restrict a rotation range. Thus, the automatic teller machine can avoid a collision between a locking arm of a locking lever and a locking shaft and prevent damage when the front panel is displaced rearward and is brought closer to a cabinet. Furthermore, when the front panel is closed, the automatic teller machine brings a rear end portion into contact with the end surface of the cabinet, thereby making it possible to cause the rotation restriction part to transition to a permission state and rotate the locking lever to engage the lock.

Description

Locking and opening device

[0001] The present disclosure relates to a locking and unlocking device, which is suitable for application to, for example, an automatic teller machine (ATM) that allows a customer to insert banknotes and coins to perform a desired transaction.

[0002] Conventionally, automated teller machines (ATMs) used in financial institutions and the like have been widely used to deposit and dispense cash, such as banknotes and coins, from customers depending on the content of a transaction with the customer. These ATMs generally have a relatively sturdy housing and a relatively small number of openable and closable panels and doors, for the purpose of protecting the banknotes and coins stored therein. Furthermore, ATMs have been proposed that utilize slide rails to slide panels, thereby facilitating installation and removal and streamlining maintenance (see, for example, Patent Document 1: International Publication WO 2017 / 094325 (FIG. 4, etc.)).

[0003] In general, in order to protect the banknotes and coins stored inside, automated teller machines of this type are designed so that a lock is provided on an openable panel or the like, and the machine can be opened or closed only when the lock is unlocked. Specifically, for example, a rotating lock such as a cylinder lock is provided on the openable panel or the like, and a predetermined engaging part is attached to the part of the lock that rotates when unlocked, and an engaged part that engages with the engaging part is attached to a corresponding part on the main body.

[0004] However, in automated teller machines, there are cases where the lock is locked while the panel is left open due to structural problems with the lock itself or parts related to the lock, or due to carelessness by maintenance workers, etc. In such cases, when the open panel is closed, the engaging part of the locked lock may collide with the engaged part, which could damage the lock itself or the parts around it.

[0005] The present disclosure has been made in consideration of the above points, and aims to propose a locking and unlocking device that can smoothly lock and unlock parts to be opened and closed while preventing damage.

[0006] In order to solve such problems, the locking / opening device disclosed herein comprises a main body, an opening / closing body that can be opened or closed relative to the main body, a lock that is provided on the opening / closing body and that can be rotated to a locked angle or an unlocked angle using a compatible key, an engaging body that rotates together with the lock, an engaged body that is provided on the main body and that engages with the engaging body to restrict the opening of the opening / closing body when the opening / closing body is closed and the lock is at the locking angle, and that disengages from the engaging body to allow the opening of the opening / closing body when the lock is rotated from the locking angle, a rotation limiting section that is provided on the opening / closing body and that transitions to a permissive state that allows the lock and engaging body to rotate to the locking angle, or a restricted state that restricts said rotation, and a restricting transition section that transitions the rotation limiting section to the permissive state when the opening / closing body is closed, and to the restricted state when the opening / closing body is open.

[0007] In the present disclosure, when the opening / closing body is released from the main body, the rotation limiting unit transitions to a restricted state, and when the opening / closing body is closed to the main body, the rotation limiting unit transitions to a permitted state. Therefore, even if the lock is rotated from the unlocking angle when the opening / closing body is open, the rotation limiting unit in the restricted state can restrict the rotation of the engaging body to the locked state. This prevents damage caused by a collision between the engaging body and the engaged body when the opening / closing body is closed. Meanwhile, in the present disclosure, when the opening / closing body is closed, the rotation limiting unit transitions to a permitted state, allowing the lock to be rotated to the locking angle and the engaging body to properly engage with the engaged body.

[0008] According to the present disclosure, it is possible to realize a locking and unlocking device that can prevent damage while smoothly locking and unlocking the parts to be opened and closed.

[0009] 1 is a schematic perspective view showing the configuration of an automated teller machine; FIG. 2 is a schematic perspective view showing an enlarged view of a portion of a front panel; FIG. 3 is a schematic perspective view showing an enlarged view of a portion of a cabinet; FIG. 4 is a schematic perspective view showing the configuration of a lock module according to a first embodiment; FIG. 5 is a schematic perspective view showing each component of the lock module; FIG. 6 is a schematic perspective view showing the configuration of a rotation limiting section; FIG. 7 is a schematic view showing elastic deformation of a central plate in the rotation limiting section; FIG. 8 is a schematic view showing the configuration of a lock lever; FIG. 9 is a schematic view showing the rotation angle of the lock module and the state of the rotation limiting section (1); FIG. 10 is a schematic view showing the rotation angle of the lock module and the state of the rotation limiting section (2); FIG. 11 is a schematic view showing the rotation angle of the lock module and the state of the rotation limiting section (3); FIG. 12 is a schematic view showing the configuration of a virtual lock module; FIG. 13 is a schematic view showing the configuration of a lock module according to a second embodiment.

[0010] Hereinafter, modes for carrying out the invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

[0011] [1. First embodiment] [1-1. Configuration of automated teller machine] As shown in the external appearance in FIG. 1(A), an automated teller machine 1 serving as a damage prevention device is mainly composed of a box-shaped housing 2, and is installed in, for example, financial institutions or various commercial facilities, etc., and performs cash-related transactions such as deposit processing and withdrawal processing between the machine and users (i.e., customers of the financial institutions or commercial facilities, etc.).

[0012] The housing 2 has a reception section 3 at the front where a user can easily insert coins and operate the touch panel while facing the front. The reception section 3 directly exchanges cash, cards, etc. with the user, notifies the user of transaction-related information, and receives operation instructions. The reception section 3 has a display operation section 4, a card slot 5, a receipt issuing port 6, a bill slot 7, a coin slot 8, etc.

[0013] The display / operation unit 4 is a touch panel that integrates a liquid crystal display panel that displays the operation screen and transaction details during a transaction, and a touch sensor that detects user input operations. The card slot 5 is where various cards such as cash cards are inserted and ejected. At the back of the card slot 5 is a card processing unit (not shown) that reads account numbers and other information magnetically recorded on various cards. The receipt issuing slot 6 is where a receipt with transaction details and other information printed on it is issued at the end of the transaction process.

[0014] The banknote slot 7 is a section where banknotes to be deposited by a user are inserted and where banknotes to be dispensed to a user are ejected. The coin slot 8 is a section where coins to be deposited by a user are inserted and where coins to be dispensed to a user are ejected.

[0015] In the following, the side of the automated teller machine 1 that the user faces will be referred to as the front side, and the opposite side will be referred to as the rear side. The left and right sides as seen from the user facing the front side will be referred to as the left and right sides, respectively, and the upper and lower sides will be further defined and explained.

[0016] Inside the housing 2, there are provided a banknote processing device that performs various processes related to banknotes, a coin processing device that performs various processes related to coins, and the like (neither of which is shown). Of these, the banknote processing device is provided with, for example, a banknote discrimination unit that discriminates banknotes, a banknote transport unit that transports the banknotes, or a banknote storage vault that stores a large number of the banknotes. Also, the coin processing device is provided with, for example, a coin discrimination unit that discriminates coins, a coin transport unit that transports the coins, or a coin storage vault that stores a large number of the coins. Therefore, the housing 2 is constructed to be extremely strong so as to protect the large number of banknotes, coins, and the like stored therein.

[0017] Specifically, the housing 2 is composed of a cabinet 11, a front panel 12, etc., and various parts are incorporated therein. The cabinet 11 as the main body is formed by combining a columnar frame, plate-shaped steel plates, etc. (not shown), and covers the top, bottom, left side, right side, rear side, and lower portion of the front side of the housing 2. In other words, the housing 2 has a relatively large opening 11H formed in the upper portion of the front side that is not covered by the cabinet 11, and this opening 11H is closed by the front panel 12.

[0018] The front panel 12, which serves as an opening / closing body, is the upper part of the front side of the housing 2, and is provided with the display operation unit 4, card slot 5, receipt issuing slot 6, and other components of the reception unit 3. The front panel 12 is attached to the cabinet 11 via slide rails 13 that run along the front-to-rear direction.

[0019] Therefore, by appropriately sliding the slide rails 13, the front panel 12 can be displaced in the front-rear direction relative to the cabinet 11. This allows the housing 2 to transition between a closed state in which it is attached to the upper front part of the cabinet 11 and closes the opening 11H as shown in Fig. 1(A) and an open state in which it is pulled away from the front of the cabinet 11 and opens the opening 11H as shown in Fig. 1(B).

[0020] In addition, a lock module 15 is provided at the lower left side of the front panel 12, as shown in a partially enlarged view in Figure 2. This lock module 15 is designed to be unlocked or locked using a key 20 that corresponds to a lock 24, which is a cylinder lock (described in detail below). This key 20 is held by, for example, an employee of the financial institution or a maintenance worker contracted with the financial institution.

[0021] 3, a lock shaft 16 that engages with the lock module 15 is provided in the cabinet 11 at a location that corresponds to the lock module 15 when the front panel 12 is in the closed state. The lock shaft 16, which serves as an engaged body, is formed in a slender cylindrical shape with its central axis aligned in the left-right direction, and is located slightly rearward of the front end face 11F of the cabinet 11. The detailed relationship between the lock module 15 and the lock shaft 16 will be described later.

[0022] Therefore, when the housing 2 is in the closed state (FIG. 1A) and the front panel 12 is closing the opening 11H of the cabinet 11, if the lock 24 is locked, the housing 2 maintains the closed state by restricting the displacement of the front panel 12. In other words, the housing 2 prohibits access to the interior through the opening 11H.

[0023] On the other hand, when the lock 24 is unlocked, the housing 2 allows the front panel 12 to slide forward and backward relative to the cabinet 11. This allows the housing 2 to freely transition between a closed state (FIG. 1A) and an open state (FIG. 1B) by moving the front panel 12 forward and backward.

[0024] [1-2. Lock Module Configuration] Next, the detailed configuration of the lock module 15 will be described with reference to Figures 4(A) and (B) and Figure 5, etc. Figure 4(A) is a perspective view of the lock module 15 as seen from the left rear, and Figure 4(B) is a side view of the lock module 15 as seen from the left. Figure 5 is a perspective view showing the lock module 15 disassembled into its individual components. Note that in the following description, the direction of rotation or pivoting of each component will be expressed as clockwise or counterclockwise, assuming that the lock module 15, etc. is viewed from the left side as in Figure 4(B).

[0025] The lock module 15 is broadly composed of a base portion 21, a rotation limiting portion 22, a lock support portion 23, a lock 24, and a lock lever 25. The base portion 21 is formed by appropriately cutting and bending a steel plate of sufficient thickness, resulting in a shape in which multiple plate-like members are joined together. This base portion 21 has sufficient rigidity so that it does not easily deform when an external force is applied. Specifically, the base portion 21 is broadly composed of a right side plate 31, an upper right side plate 32, an upper mounting piece 33, a front side plate 34, a rear side plate 35, and a lower mounting piece 36.

[0026] The right side plate 31 is a rectangular plate that is thin in the left-right direction and slightly shorter in the up-down direction than in the front-to-back direction. The upper right side plate 32 is composed of a lower inclined portion 32L and an upper mounting portion 32U on the upper side. The inclined portion 32L is a rectangle that is slightly shorter in the front-to-back direction than the right side plate 31 and even shorter in the up-down direction, and is slightly inclined relative to the right side plate 31 so that it slopes slightly to the right as it extends upward. The upper mounting portion 32U is a plate that is approximately parallel to the right side plate 31, and an upper mounting piece 33 is connected to its rear edge.

[0027] The upper mounting piece 33 is composed of a front inclined portion 33F and a rear mounting portion 33R. The inclined portion 33F is a thin plate-like member with a vertical length approximately equal to that of the upper mounting portion 32U and an even shorter rectangular shape with a front-to-rear length. The inclined portion 33F is slightly inclined relative to the upper mounting portion 32U so that it slopes slightly to the right as it moves rearward. The rear mounting portion 33R is a thin rectangular plate-like member with a vertical length approximately equal to that of the upper mounting portion 32U and the inclined portion 33F and a front-to-rear length slightly longer than that of the inclined portion 33F, and is substantially parallel to the right side plate 31 and the upper mounting portion 32U. Furthermore, the upper mounting portion 32U and the rear mounting portion 33R are appropriately provided with mounting holes that penetrate in the left-to-right direction.

[0028] The front plate 34 is a rectangular plate that is thin in the front-to-rear direction, has a vertical length that is approximately the same as that of the right side plate 31, and is sufficiently shorter in the left-to-right direction than that. The rear plate 35 is a rectangular plate that is thin in the front-to-rear direction, has a vertical length that is approximately the same as that of the right side plate 31, and is slightly shorter in the left-to-right direction than that of the front plate 34. A lower mounting piece 36 that protrudes rearward is connected to the lower edge of the rear plate 35. The lower mounting piece 36 is a rectangular plate that is thin in the front-to-rear direction, has a horizontal length that is approximately the same as that of the rear side plate 35, and is shorter in the left-to-right direction than that.

[0029] 6A and 6B, the rotation limiting portion 22 has a shape in which a plurality of plate-like members are joined together by appropriately cutting and bending a steel plate that is thinner than the base portion 21. Specifically, the rotation limiting portion 22 is broadly composed of a right side plate 41, an upper side plate 42, a center plate 43, a lower side plate 44, and a rear end portion 46.

[0030] The right side plate 41 is a rectangular plate that is thin in the left-right direction and is slightly longer in the front-to-back direction than in the up-to-down direction when viewed from the left. As shown in Figure 7(A), this right side plate 41 is attached to the upper-rear side of the left surface of the right side plate 31 of the base portion 21. The upper side plate 42 (Figure 5) is a rectangular plate that is thin in the up-to-down direction and is slightly longer in the front-to-back direction than in the left-to-right direction when viewed from above, and has a portion cut out on the right front side. The right side of this upper side plate 42 is connected to the upper side of the right side plate 41.

[0031] The central plate 43 (FIG. 6) serving as the limiting transition portion is thin in the front-rear direction, is longer in the up-down direction than in the left-right direction, and has an upper edge connected to the rear edge of the upper plate 42 and is positioned adjacent to the rear side of the rear plate 35 of the base portion 21. Therefore, the central plate 43 functions as an elastic body or leaf spring fixed near its upper edge, and can displace its lower portion rearward.

[0032] The center plate 43 is composed of an upper center plate 43U that occupies approximately two-thirds of the upper area and a lower center plate 43L that occupies approximately one-third of the lower area. The upper center plate 43U is rectangular in shape that is longer in the up-down direction than in the left-right direction overall, and its left-right length is longer than the left-right length of the rear side plate 35. Therefore, when viewed from the rear, approximately half of the right side of the upper center plate 43U is hidden by the rear side plate 35, while approximately half of the left side is exposed and protrudes from the rear side plate 35.

[0033] The lower central plate 43L has a longer length in the left-right direction than the upper central plate 43U, its right edge is arranged in a straight line continuing with the right edge of the upper central plate 43U, and its left edge is arranged offset to the left of the left edge of the upper central plate 43U. In other words, the left edge of the central plate 43 is bent in a crank shape, so that the portion of the upper central plate 43U protrudes to the left. Hereinafter, the upper edge of the portion of the lower central plate 43L that protrudes leftward beyond the upper central plate 43U will be referred to as the restriction portion 45.

[0034] The lower plate 44 is a thin plate extending vertically and has a generally square shape when viewed from above. The length of the lower plate 44 in the left-right direction is approximately two-thirds that of the lower center plate 43L. The rear edge of the lower plate 44 is connected to the lower edge of the center plate 43 so that the left edge is aligned with the lower center plate 43L. Therefore, the lower plate 44 is located to the left of the rear plate 35 of the base 21 and does not interfere with the rear plate 35. The angle α between the lower plate 44 and the center plate 43 is less than 90 degrees. A rear end portion 46 extends downward and is connected to the rear edge of the lower plate 44. The rear end portion 46 has a rectangular shape that is longer in the left-right direction than in the up-down direction.

[0035] 7A, in a natural state where no external force is applied, the rotation limiting portion 22 has a flat plate shape with the central plate 43 parallel to the rear plate 35. In this state, the limiting point 45 is located near the rear plate 35 in the front-rear direction. Hereinafter, the state of the rotation limiting portion 22 in this state will be referred to as the limited state.

[0036] On the other hand, when an external force acting in the forward direction is applied to the rear end 46, the rotation limiting portion 22 elastically deforms so as to displace the rear end 46 and the lower end of the central plate 43 forward while bending the central plate 43 as a whole, as shown in FIG. 7B . At this time, the limiting point 45 is located slightly forwardly away from the rear side plate 35 in the front-to-rear direction. Hereinafter, the state of the rotation limiting portion 22 at this time will be referred to as the permissive state. Thereafter, when the external force is no longer applied to the rear end 46, the rotation limiting portion 22 returns to its original restricted state ( FIG. 7A ) due to the action of the elastic force.

[0037] In this way, the rotation restriction portion 22 displaces the restriction point 45 generally along the front-to-rear direction by elastically deforming the central plate 43 in response to an external force applied to the rear end portion 46 in a generally forward direction.

[0038] Like the base portion 21, the lock support portion 23 (FIG. 5) is formed by appropriately cutting and bending a steel plate of sufficient thickness, resulting in a shape in which multiple plate-like members are joined together. Like the base portion 21, the lock support portion 23 has sufficient rigidity so that it does not easily deform when an external force is applied. Specifically, the lock support portion 23 is broadly composed of a left side plate 51, a front side plate 52, a lower side plate 53, and a lower right side plate 54.

[0039] The left side plate 51 is a thin plate extending in the left-right direction, and when viewed from the left side, is formed into a trapezoidal shape with the upper rear portion cut off diagonally from a rectangle that is slightly shorter in the vertical direction than the right side plate 31 of the base portion 21. Near the center of the left side plate 51, there is a lock mounting hole 51H that is a round hole that penetrates in the left-right direction.

[0040] The front plate 52 is a rectangular plate that is thin in the front-to-rear direction and has a shape formed by joining a trapezoidal upper section and an elongated rectangular lower section. The left side of the front plate 52 is connected to the front side of the left side plate 51. The front plate 52 is positioned so that a portion of the right side of the upper section overlaps the front side of the front plate 34 of the base 21, and is fixed to the front plate 34 using a predetermined fixing screw.

[0041] The lower plate 53 is a rectangular plate that is thin in the vertical direction, has a front-to-rear length that is approximately the same as the lower edge of the left side plate 51, and a left-to-right length that is slightly longer than the left-to-right length of the lower central plate 43L of the rotation limiting portion 22. The left edge of this lower plate 53 is connected to the lower edge of the left side plate 51. A small, plate-shaped rear mounting piece 56 extends rearward from the rear side of the lower plate 53, only on a portion of the right side that corresponds to the lower mounting piece 36 of the base portion 21. The upper surface of this rear mounting piece 56 abuts against the lower surface of the lower mounting piece 36 of the base portion 21, and is fixed to the lower mounting piece 36 using a predetermined fixing screw.

[0042] The lower right side plate 54 is formed in a rectangular shape that is thin in the left-right direction, long in the front-to-back direction, and short in the up-to-down direction, and its upper edge is connected to the right edge of the lower side plate 53. This lower right side plate 54 is appropriately formed with screw holes, notches, etc. for attachment to the front panel 12 (FIG. 1).

[0043] Lock 24 is a so-called cylinder lock, and is formed in a cylindrical shape with an imaginary central axis X24 along the left-right direction as its center. Lock 24 has a cylindrical outer cylinder 61 inside which is fitted an inner cylinder 62 that is pillar-shaped and has a smaller diameter than outer cylinder 61, and a keyhole 63 is formed on the left side of inner cylinder 62.

[0044] The outer diameter of the outer cylinder 61 is slightly smaller than the diameter of the lock mounting hole 51H. An outer cylinder mounting plate 64 is provided near the left end of the outer cylinder 61 for mounting to the lock support part 23. The inner cylinder 62 is provided inside the outer cylinder 61 and is rotatable relative to the outer cylinder 61 about a central axis X24. An inner cylinder mounting plate 65 for mounting the lock lever 25 is provided near the right end of the inner cylinder 62.

[0045] The keyhole 63 is formed in a rectangular shape with long sides aligned in the vertical direction when viewed from the left side, and is located on the left side surface of the inner cylinder 62, slightly below the center of the inner cylinder 62. For convenience of explanation, the angle (posture) of the long side of the keyhole 63 when viewed from the left will be considered to be the angle between the lock 24 and the inner cylinder 62.

[0046] When the correct key 20 is not inserted in the keyhole 63, the lock 24 is locked, restricting the rotation of the inner cylinder 62 relative to the outer cylinder 61 and fixing the position and angle of the inner cylinder 62. At this time, the long side of the keyhole 63 is approximately parallel to the front edge of the left side panel 51. Hereinafter, the angle of the lock 24 at this time will be referred to as the locking angle.

[0047] Furthermore, when a valid key 20 is inserted into the keyhole 63, the lock 24 allows the inner cylinder 62 to be freely rotated relative to the outer cylinder 61 around the central axis X24 within a range of up to 90 degrees clockwise from the locking angle, i.e., the angle of the inner cylinder 62 can be freely changed. In particular, the angle at which the lock 24 is rotated 90 degrees clockwise from the locking angle, i.e., the angle at which the long side of the keyhole 63 is approximately parallel to the bottom side of the left side panel 51, is called the unlocking angle.

[0048] Incidentally, when a valid key 20 is inserted into the lock 24 and becomes rotatable, the key 20 can only be removed at the locked angle. In other words, when a valid key 20 is inserted into the lock 24 and rotated from the locked angle to the unlocked angle or any other angle, the key 20 cannot be removed and remains inserted.

[0049] 8A and 8B, the lock lever 25 as an engaging body is formed by appropriately cutting and bending a steel plate that is thicker than the base portion 21 and the lock support portion 23, and has a shape like a plurality of plate-like members connected to each other. Specifically, the lock lever 25 is broadly composed of an attachment portion 71, a bending portion 72, a base portion 73, a lock arm 74, and a limiting arm 75.

[0050] The mounting portion 71 is a thin plate extending laterally, and is formed into a rectangular shape that is slightly longer vertically than longitudinally when viewed from the left. A mounting hole 71H penetrating laterally is drilled in the lower right corner of the center of the mounting portion 71. The lock lever 25 is fixed in place with the inner cylinder 62 of the lock 24 inserted through this mounting hole 71H. This allows the lock lever 25 to rotate integrally with the inner cylinder 62 around the central axis X24, changing its position.

[0051] The bent portion 72 is formed in a rectangular plate shape that is as long in the up-down direction as the mounting portion 71, short in the left-right direction, and thin in the front-to-rear direction. The right side of the bent portion 72 is connected to the rear side of the mounting portion 71, and the left side is inclined so that it is positioned slightly rearward of the right side.

[0052] The base portion 73 is a plate-like member that is thin in the left-right direction, similar to the mounting portion 71, and is formed into a trapezoidal plate whose length in the up-down direction is shorter than those of the bent portion 72 and the mounting portion 71, and whose bottom base is shorter than its top base. The base portion 73 is connected to the left side of the bent portion 72 in the rearward direction so that their upper ends are aligned. The top side of the base portion 73 is raised so that approximately the rear half is slightly higher than approximately the front half.

[0053] The locking arm 74 is formed in a plate shape with its left and right side surfaces flush with the base portion 73, and has a shape resembling an upside-down capital letter "L" when viewed from the left. The locking arm 74 is connected near the upper end of the rear edge of the base portion 73. That is, when viewed from the left, the locking arm 74 has an arm portion of a predetermined width extending rearward from the upper end of the rear edge of the base portion 73 and then bending downward and extending further.

[0054] For this reason, a lock groove 76 is formed in the lock lever 25 between the base portion 73 and the lock arm 74. When viewed from the bottom end of the lock arm 74, this lock groove 76 has a shape that looks like it is cut out in the upward direction. Incidentally, the top end portion of the lock groove 76 is rounded into a semicircular shape when viewed from the left.

[0055] The limiting arm 75 serving as the engaging body abutment portion is formed in a plate shape whose left and right side surfaces are flush with the base portion 73 and the locking arm 74, and when viewed from the left side, has a shape that resembles a capital letter "L" with the bottom side significantly shortened and the entire arm tilted counterclockwise by approximately 30 degrees. In other words, when viewed from the left side, the limiting arm 75 has an arm portion of a predetermined width extending diagonally downward and forward from the rear end of the bottom side of the base portion 73, and then bent diagonally upward and forward by approximately 90 degrees and further extended slightly.

[0056] Furthermore, the limiting surface 75M, which is the lower surface of the limiting arm 75, is a plane that follows an imaginary straight line V75L that passes through the central axis X24 when viewed from the left side. Hereinafter, the distance from the central axis X24 to the rear end of the limiting surface 75M will be referred to as the outer limiting end distance L75U, and the distance from the central axis X24 to the front end of the limiting surface 75M will be referred to as the inner limiting end distance L75N.

[0057] Here, when the rotation limiting section 22 is in a restricted state (Figure 7 (A)), if the distance from the central axis X24 to the restricted point 45 of the rotation limiting section 22 is the restricted distance L45, a magnitude relationship exists between the restricted inner end distance L75N and the restricted outer end distance L75U and the restricted distance L45, as shown in the following equation (1).

[0058] Outer limit end distance L75U>Restriction distance L45>Inner limit end distance L75N (1)

[0059] Furthermore, the restricting surface 75M is formed with a contact maintaining groove 75D recessed upward, slightly forward of the center in the front-to-rear direction. The contact maintaining groove 75D, which serves as a contact maintaining portion, is formed as a minute groove along the left-to-right direction.

[0060] The lock module 15 configured in this manner is attached to the left side of the front panel 12 of the housing 2 with the lower edge of the right side panel 31 of the base portion 21 slightly tilted relative to the horizontal, specifically tilted approximately 15 degrees counterclockwise when viewed from the left side.

[0061] [1-3. Locking and Unlocking Operations] Next, the locking and unlocking operations of the lock module 15 attached to the front panel 12 of the housing 2 will be described in detail with reference to Figures 9(A) and (B), 10(A) and (B), and 11(A) and (B). Note that Figures 9(A), 10(A), and 11(A) are all schematic perspective views of the lock module 15, and Figures 9(B), 10(B), and 11(B) are all schematic left side views of the lock module 15.

[0062] 9 to 11, the valid key 20 (FIG. 5) is inserted into the lock 24, and the inner cylinder 62 of the lock 24 is in a state where it can freely rotate about the central axis X24, but for convenience of drawing, the key 20 is omitted. Furthermore, for convenience of drawing, the front panel 12 is omitted entirely in FIGS. 9(A) to 11(A), and only the end surface 11F (hereinafter also referred to as the abutted portion) of the cabinet 11 and the lock shaft 16 are shown schematically.

[0063] 9A and 9B show a state in which the lock 24 is at the unlock angle and the lock arm 74 of the lock lever 25 is positioned almost directly above the lock 24. At this time, the housing 2 is in an open state, removed from the attached position, and the front panel 12 is positioned slightly forward from the cabinet 11. Also, at this time, the rear end 46 of the rotation limiting portion 22 is sufficiently separated from the end face 11F of the cabinet 11, so no external force is being applied from the end face 11F, and the rotation limiting portion 22 is in a restricted state similar to that shown in FIG. 7A.

[0064] Here, when the lock 24 is at the unlocking angle (Figure 9), if a maintenance worker or the like rotates the key 20 while the front panel 12 of the housing 2 is in the open state, or if gravity acts on the lock lever 25, the lock 24 will rotate counterclockwise.

[0065] 10A and 10B, in the lock module 15, due to the relationship of equation (1) described above, the rotation of the lock lever 25 is restricted when the limiting arm 75 of the lock lever 25 abuts against the limiting point 45 of the center plate 43 of the rotation limiting portion 22. As a result, the lock lever 25 comes to a standstill with the limiting surface 75M, which is the underside of the limiting arm 75, abutting against the limiting point 45 of the rotation limiting portion 22. Incidentally, at this time, the inner cylinder 62 of the lock 24 and the lock lever 25 are at an angle between the locking angle and the unlocking angle, and are rotated approximately 30 degrees clockwise from the locking angle. Hereinafter, the angle of the inner cylinder 62 of the lock 24 and the lock lever 25 at this time will be referred to as the limiting angle.

[0066] In other words, when the front panel 12 is open, the lock 24 into which the key 20 is inserted has its rotation range limited by the rotation limiting section 22 so that it can rotate within the range of the unlocking angle (Figure 9) and the restricted angle (Figure 10).

[0067] At this time, in the lock module 15, the limiting portion 45 of the center plate 43 of the rotation limiting portion 22 is caught in the abutment maintaining groove 75D formed on the limiting surface 75M of the limiting arm 75 of the lock lever 25, preventing the center plate 43 from easily moving forward or backward. Hereinafter, this state will be referred to as the "limited state." In this limited state, the lower end of the locking arm 74 of the locking lever 25 is stationary at a position higher than the locking shaft 16 of the cabinet 11, and is held in a position that does not interfere with the locking shaft 16.

[0068] Next, assume that in this restricted state, the front panel 12 is displaced rearward and attached to the cabinet 11. When the front panel 12 is displaced rearward, the lock module 15 causes the limiting arm 75 of the lock lever 25 to abut against the limiting point 45 of the rotation limiting portion 22, so that the locking arm 74 passes above the locking shaft 16, avoiding a collision between them.

[0069] Furthermore, when the rear end 46 of the central plate 43 of the rotation limiter 22 of the lock module 15 abuts against the end surface 11F of the cabinet 11 as the front panel 12 moves rearward, a force acts in the forward direction on the lower portion of the central plate 43 via the rear end 46. As a result, the rotation limiter 22 gradually bends the central plate 43 from the restricted state ( FIG. 7(A) ) to the permitted state ( FIG. 7(B) ), thereby shortening the restriction distance L45, which is the distance from the central axis X24 to the restriction point 45. As a result, the restriction point 45 approaches the front end of the restriction surface 75M of the abutting restriction arm 75.

[0070] As the front panel 12 is displaced further rearward and fully attached to the cabinet 11, the lock module 15 further bends the center plate 43 of the rotation limiter 22, eventually reaching the permissive state as shown in Figure 7(B). At this point, the limiting point 45 of the lock module 15 has reached a position forward of the front end of the limiting surface 75M of the limiting arm 75 of the lock lever 25, and the limiting distance L45 has become shorter than the inner limiting end distance L75N of the limiting arm 75. In other words, the relationship of equation (1) above no longer holds.

[0071] 11A and 11B, the lock module 15 rotates counterclockwise together with the inner cylinder 62 to the locking angle because the limiting arm 75 of the lock lever 25 is no longer supported by the rotation limiting portion 22. Accordingly, the lock module 15 enters a state in which the lock arm 74 of the lock lever 25 enters the rear side of the lock shaft 16 and the lock shaft 16 enters the lock groove 76, i.e., the lock module 15 is engaged with the lock shaft 16.

[0072] In this way, when the front panel 12 of the housing 2 is displaced rearward relative to the cabinet 11, the housing 2 finally reaches a completely closed state, and the lock module 15 engages with the lock shaft 16, reaching the locking angle. When the key 20 is removed from the lock module 15 in this state, the housing 2 maintains the front panel 12 in the closed state, preventing accidental opening and effectively protecting the bills, coins, etc. stored inside.

[0073] In other words, when the front panel 12 is closed, the lock 24 with the key 20 inserted can rotate within the range of the unlocking angle (Figure 9) and the locking angle (Figure 11) without the rotation range being restricted by the rotation restricting section 22.

[0074] 11A and 11B, it is assumed that the front panel 12 of the housing 2 is in the closed state and the lock module 15 is in the locked state. At this time, the rotation limiting portion 22 of the lock module 15 is in the permissive state and the lock arm 74 of the lock lever 25 is engaged with the lock shaft 16.

[0075] In this state, the housing 2 transitions from a locked state to an unlocked state when a maintenance worker or the like inserts the valid key 20 (FIG. 5) into the lock 24 and rotates the inner cylinder 62 clockwise approximately 90 degrees together with the key 20. At this time, the lock lever 25 of the housing 2 rotates integrally with the inner cylinder 62 of the lock 24, thereby releasing the engagement between the lock arm 74 and the lock shaft 16. This allows the front panel 12 to move forward relative to the cabinet 11.

[0076] Next, when the front panel 12 of the housing 2 is removed from the cabinet 11 by a maintenance worker or the like and displaced forward, the center plate 43 of the rotation limiting unit 22 moves away from the end surface 11F of the cabinet 11. As a result, in the lock module 15, the center plate 43 of the rotation limiting unit 22 returns to its natural state due to the action of its elastic force, and enters the restricted state. That is, the housing 2 returns to the state shown in FIGS. 9(A) and (B).

[0077] [1-4. Effects, etc.] In the above configuration, the automated teller machine 1 according to the first embodiment has the lock module 15 attached to the front panel 12 of the housing 2, thereby maintaining the front panel 12 attached to the cabinet 11 and protecting the stored banknotes, coins, etc.

[0078] For comparison with this embodiment, a virtual comparative lock module 115 is assumed as shown in Figure 12. This comparative lock module 115 has a general configuration, and unlike the lock module 15 of this embodiment, does not have a rotation limiting unit 22 attached.

[0079] The comparative lock module 115 can freely rotate between the unlocked angle (FIG. 9) and the locked angle (FIG. 11) when a valid key 20 (FIG. 5) is inserted into the lock 24. That is, when the front panel 12 is open and the lock 24 is rotated clockwise from the unlocked angle (FIG. 9), the comparative lock module 115 can rotate to the locked angle (FIG. 11) without any intermediate restriction.

[0080] Therefore, if the front panel 12 is displaced rearward while the comparative lock module 115 is at the locking angle, the lock arm 74 may collide with the lock shaft 16 on the cabinet 11 side, potentially damaging these components and the surrounding components.

[0081] In contrast, the lock module 15 according to this embodiment has a rotation limiting section 22 attached to the base section 21, and a limiting arm 75 attached to the lock lever 25 (FIGS. 4 to 8). Therefore, in an automated teller machine 1 having this lock module 15 attached to the housing 2, even if the lock 24 is rotated from the unlocking angle (FIG. 9) when the front panel 12 is detached from the cabinet 11, the limiting arm 75 abuts against the limiting point 45 at the limiting angle (FIG. 10), restricting further rotation.

[0082] Therefore, the lock module 15 can maintain the lock 24 and lock lever 25 at a limited angle while the front panel 12 is detached from the cabinet 11, and can retract the lock arm 74 to a position higher than the lock shaft 16, i.e., a position that does not interfere with the lock shaft 16.

[0083] As a result, even if the front panel 12 of the automated teller machine 1 is displaced backward when the lock 24 is at an angle other than the unlocking angle and the machine is attached to the cabinet 11, the collision between the lock lever 25 and the lock shaft 16 can be avoided, and damage to each part can be prevented beforehand.

[0084] Furthermore, in the automated teller machine 1, when the front panel 12 is attached to the cabinet 11 with the limiting arm 75 of the lock lever 25 in the lock module 15 abutting against the limiting point 45 of the rotation limiting part 22 (FIG. 9), the rear end part 46 of the rotation limiting part 22 abuts against the end face 11F of the cabinet 11, elastically deforming the center plate 43 and entering an allowable state. Accordingly, in the lock module 15, the lock lever 25 rotates due to the action of gravity and engages with the lock shaft 16 (FIG. 10).

[0085] In other words, in the automated teller machine 1, locking by the lock module 15 can be completed simply by attaching the front panel 12 to the cabinet 11, without the need for a maintenance worker or the like to rotate the key 20 inserted into the lock 24 again.

[0086] In other words, the rotation restricting section 22 is in a restricting state (FIG. 7A) when the front panel 12 is detached from the cabinet 11, and quickly transitions to a permitting state (FIG. 7B) when the front panel 12 is attached to the cabinet 11. Therefore, the lock module 15 can simultaneously prevent damage to the lock lever 25 and lock shaft 16 when the front panel 12 is detached, and engage the lock lever 25 and lock shaft 16 when the front panel 12 is attached.

[0087] Furthermore, in the lock module 15, a contact maintaining groove 75D, which is a relatively small groove extending in the left-right direction, is provided on the limiting surface 75M, which is the underside of the limiting arm 75 of the lock lever 25. Therefore, when the lock lever 25 rotates counterclockwise from the unlocked state and the limiting surface 75M comes into contact with the limiting point 45 of the center plate 43 in the rotation limiting section 22, the lock module 15 can maintain the state in which the limiting surface 75M comes into contact with the limiting point 45 without causing the center plate 43 to slide in the front-rear direction.

[0088] From another perspective, in the lock module 15, when focusing on the center plate 43 of the rotation limiter 22, the right side plate 41 is attached to the right side plate 31 of the base 21 via the upper plate 42. As a result, when the center plate 43 is elastically deformed, the vicinity of the upper edge serves as a fulcrum, allowing the rear end 46 and the limiting point 45 to be displaced generally in the front-to-rear direction (FIG. 7). Meanwhile, the rotation limiter 22 is configured to receive a generally downward force from the limiting arm 75 of the lock lever 25 at the limiting point 45 of the center plate 43 (FIG. 10).

[0089] That is, in the rotation restricting portion 22, the direction in which the central plate 43 receives force from the lock lever 25 and the direction in which the restricting portion 45 displaces between the restricted state and the allowed state are made different from each other and are made to be roughly perpendicular to each other.

[0090] Therefore, when the limiting arm 75 of the lock lever 25 abuts against the limiting point 45 in the rotation limiting section 22, which is in a restricted state, the lock module 15 can reliably support the lock lever 25 without displacing the limiting point 45 downward. On the other hand, when a forward force is applied to the rear end 46 of the rotation limiting section 22 as the front panel 12 is displaced rearward, the lock module 15 can move the limiting point 45 closer to the center axis X24 of the lock 24 while maintaining the state in which the lock lever 25 is supported by the limiting arm 75, thereby transitioning to an allowed state.

[0091] According to the above configuration, when the front panel 12 of the housing 2 is open, the automated teller machine 1 places the rotation limiting unit 22 in the restricted state, and when the lock 24 is rotated from the unlocking angle, the limiting arm 75 abuts against the limiting point 45 to limit the rotation range. This allows the automated teller machine 1 to avoid a collision between the lock arm 74 of the lock lever 25 and the lock shaft 16 when the front panel 12 is displaced rearward and brought close to the cabinet 11, thereby preventing damage. Furthermore, when the front panel 12 is closed, the automated teller machine 1 causes the rear end 46 to abut against the end face 11F of the cabinet 11, transitioning the rotation limiting unit 22 to the permitted state, and rotating the lock lever 25 to lock the lock 24.

[0092] 2. Second Embodiment An automated teller machine 201 according to the second embodiment differs from the automated teller machine 1 according to the first embodiment in that it has a lock module 215 instead of the lock module 15 .

[0093] 13, which corresponds to FIG. 4A, the lock module 215 differs from the lock module 15 in that it includes an unlocking angle maintaining unit 226. The unlocking angle maintaining unit 226 is a tiny rectangular parallelepiped magnet that is attached near the upper end of the rear surface of the front plate 34 of the base unit 21. In addition, in the lock module 215, the lock lever 25 is a magnetic material manufactured by processing a steel plate.

[0094] Therefore, when a valid key 20 is inserted into the lock 24 and rotated to the unlocking angle, the lock module 215 applies the magnetic force of the unlocking angle maintenance unit 226 to the lock lever 25, attracting or adsorbing it, thereby maintaining the lock lever 25 and the lock 24 in the unlocked state.

[0095] With this configuration, in the automated teller machine 201, when the front panel 12 of the housing 2 is attached to the cabinet 11 and the lock 24 is locked, if a maintenance worker or the like inserts a valid key into the lock 24 and rotates it to the unlocking angle, the unlocking angle maintaining unit 226 will function to maintain the lock lever 25 and the lock 24 in the unlocked state.

[0096] Thereafter, when the front panel 12 of the automated teller machine 201 is displaced forward, it is detached from the cabinet 11, opening the opening 11H. At this time, even if vibrations or the like caused by the displacement are applied to the front panel 12 of the automated teller machine 201, the unlock angle maintaining unit 226 can maintain the lock lever 25 and the lock 24 in the unlocked state.

[0097] Furthermore, in the automated teller machine 201, if a maintenance worker unintentionally touches the key 20 or lock lever 25 inserted in the lock 24, and an external force greater than the magnetic force acting on the lock lever 25 from the unlocking angle maintaining unit 226 is applied, there is a risk that the lock lever 25 and lock 24 will rotate counterclockwise.

[0098] In such a case, in the automated teller machine 201, as in the first embodiment, when the limiting arm 75 abuts against the limiting point 45, further rotation is restricted ( FIG. 10 ), thereby preventing damage due to a collision between the lock lever 25 and the lock shaft 16.

[0099] In other respects as well, the automated teller machine 201 according to the second embodiment can achieve the same effects as the automated teller machine 1 according to the first embodiment.

[0100] [3. Other Embodiments] In the first embodiment described above, the lock 24 is configured to allow insertion and removal of the key 20 only at the locking angle (e.g., FIG. 11). However, the present disclosure is not limited to this. For example, the lock 24 may allow insertion and removal of the key 20 at the unlocking angle (FIG. 9) in addition to the locking angle. The same applies to the second embodiment.

[0101] In the first embodiment described above, the limiting arm 75 of the lock lever 25 abuts against the limiting point 45 of the rotation limiting portion 22 to limit counterclockwise rotation of the lock lever 25 at the limiting angle ( FIG. 10 ) where the lock 24 is rotated clockwise by approximately 30 degrees from the locking angle. However, the present disclosure is not limited to this, and the limiting arm 75 may abut against the limiting point 45 at various other angles, including the unlocking angle. The key point is to avoid collision between the lock lever 25 and the lock shaft 16 when the front panel 12 in the open state is displaced rearward. The same applies to the second embodiment.

[0102] Furthermore, in the first embodiment described above, a single contact maintaining groove 75D recessed upward from the limiting surface 75M, which is the lower surface of the limiting arm 75 of the lock lever 25, has been described ( FIG. 8 ). However, the present disclosure is not limited to this. For example, two or more contact maintaining grooves 75D may be provided on the limiting surface 75M, or the contact maintaining groove 75D may be omitted from the limiting surface 75M. Alternatively, a protrusion or step protruding downward from the limiting surface 75M may be provided. Essentially, any shape may be used as long as it maintains the contact state between the limiting surface 75L of the limiting arm 75 of the lock lever 25 and the limiting portion 45 of the rotation limiter 22. The same applies to the second embodiment.

[0103] Furthermore, in the first embodiment described above, the center plate 43 of the rotation limiter 22 functions as an elastic body (a so-called leaf spring), thereby displacing the restriction point 45 of the center plate 43 generally in the front-to-rear direction to transition between the restricted state and the permissive state ( FIG. 7 ). However, the present disclosure is not limited to this. For example, the right side plate 41 and the upper side plate 42 may be omitted from the rotation limiter 22, and the rotation limiter 22 may be configured to be movable in the front-to-rear direction, and furthermore, a well-known elastic member such as a coil spring may be used to bias the rotation limiter 22 forward. That is, the present disclosure can employ various configurations such as maintaining the restriction point 45 in the restricted state while the front panel 12 is detached from the cabinet 11 and transitioning the restriction point 45 to the permissive state when the front panel 12 is attached to the cabinet 11. The same applies to the second embodiment.

[0104] Furthermore, in the first embodiment described above, the lock lever 25 is directly attached to the inner cylinder 62 of the lock 24, thereby allowing the inner cylinder 62 and the lock lever 25 to rotate as a unit. However, the present disclosure is not limited to this. For example, an arc-shaped gear centered on the mounting hole 71H may be formed on the mounting portion 71 of the lock lever 25, a well-known gear may be fixed to the inner cylinder 62, and an intermediate gear may be provided between the two, and the gears may be arranged to mesh appropriately, thereby linking the various parts. This makes it possible to arrange the lock 24 and the lock lever 25 apart. The same applies to the second embodiment.

[0105] Furthermore, in the first embodiment described above, the front panel 12 is attached to the cabinet 11 via slide rails 13, and the front panel is moved (slid) forward and backward to transition between a closed state and an open state. However, the present disclosure is not limited to this. For example, the front panel 12 may be attached to the cabinet 11 via a hinge or the like, and the front panel 12 may be rotated to transition between a closed state and an open state. Alternatively, the front panel 12 may be configured to be detachable from the cabinet 11. That is, the front panel 12 may be attached to the cabinet 11 using various well-known mounting members, and the front panel 12 may be transitioned between a closed state and an open state. The same applies to the second embodiment.

[0106] Furthermore, in the second embodiment described above, the lock lever 25 and the lock 24 are maintained at the unlocking angle by the unlocking angle maintaining unit 226 made of a magnet ( FIG. 13 ). However, the present disclosure is not limited to this, and various other configurations may be used to maintain the lock lever 25 and the lock 24 at the unlocking angle, such as by assembling a well-known torsion spring to the lock 24 as the unlocking angle maintaining unit instead of the unlocking angle maintaining unit 226 made of a magnet.

[0107] Furthermore, in the above-described first embodiment, a configuration has been described in which both a banknote processing device and a coin processing device are incorporated into the automated teller machine 1. However, the present disclosure is not limited to this, and only one of the banknote processing device and the coin processing device may be incorporated into the automated teller machine 1. The same applies to the second embodiment.

[0108] Furthermore, in the first embodiment described above, the present disclosure is applied to an automated teller machine 1 that performs cash-related transactions with users. However, the present disclosure is not limited to this, and may be applied to various devices that perform various cash-related transactions with users, such as vending machines that sell various products and automated checkout machines that perform checkout processes (so-called self-checkouts). Alternatively, the present disclosure may be applied to a cash management device used by employees of financial institutions, clerks at retail stores, etc. to manage cash. The same applies to the second embodiment.

[0109] Furthermore, the present disclosure is not limited to the above-described embodiments and other embodiments, and the scope of application of the present disclosure extends to embodiments in which the above-described embodiments and some or all of the other embodiments are combined in any manner, or to embodiments in which only a portion is extracted.

[0110] Furthermore, in the above-described first embodiment, the automatic teller machine 1 as a locking opening / closing device is configured by the cabinet 11 as a main body, the front panel 12 as an opening / closing body, the lock 24 as a lock, the lock lever 25 as an engaging body, the lock shaft 16 as an engaged body, the rotation limiting part 22 as a rotation limiting part, and the center plate 43 as a limiting transition part. However, the present disclosure is not limited to this, and the locking opening / closing device may be configured by a main body, opening / closing body, lock, engaging body, engaged body, rotation limiting part, and limiting transition part having various other configurations.

[0111] The present disclosure can be used when a lock is provided on an openable and closable housing.

[0112] The disclosure of Japanese Patent Application No. 2024-049687 is incorporated herein by reference in its entirety.

[0113] All publications, patent applications, and technical standards mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication, patent application, or technical standard was specifically and individually indicated to be incorporated by reference.

Claims

1. A locking and opening device comprising: a main body; an opening / closing body that can be opened or closed relative to the main body; a lock that is attached to the opening / closing body and rotates to a locked angle or an unlocked angle using a compatible key; an engaging body that rotates integrally with the lock; an engaged body that is attached to the main body and engages with the engaging body to restrict the opening of the opening / closing body when the opening / closing body is closed and the lock is at the locking angle, and disengages from the engaging body to allow the opening of the opening / closing body when the lock is rotated from the locking angle; a rotation restricting unit that is attached to the opening / closing body and transitions to a permissive state that allows the lock and engaging body to rotate to the locking angle, or a restricted state that restricts said rotation; and a restricting transition unit that transitions the rotation restricting unit to the permissive state when the opening / closing body is closed, and transitions the rotation restricting unit to the restricted state when the opening / closing body is open.

2. The locking and opening device according to claim 1, characterized in that, in the restricted state, the rotation limiting section limits the range of rotation of the lock and the engaging body to a range between a limit angle between the unlocking angle and the locking angle and the unlocking angle, and the engaging body is in a position at the limit angle where it does not interfere with the engaged body even when the opening and closing body is closed.

3. The locking / opening device according to claim 1, characterized in that the rotation restricting portion has a restricting point that abuts against the engaging body in the restricted state, and the restricting transition portion displaces the restricting point between the restricted state and the permissible state.

4. The locking / opening device according to claim 3, characterized in that the restriction transition section makes the direction in which the restriction point is displaced between the restriction state and the permissive state different from the direction in which force is applied from the engagement body to the restriction point.

5. The locking / opening device according to claim 1, characterized in that the restriction transition section has an elastic member that elastically deforms in response to the opening and closing of the opening / closing body relative to the main body, and the rotation restriction section is transitioned to the permissive state or the restricted state by utilizing the elastic deformation of the elastic member.

6. A locking / opening device as described in claim 5, characterized in that when the opening / closing body is closed, the restrictive transition part abuts against an abutment part provided on the main body, elastically deforming the elastic member from its natural state, and when the opening / closing body is opened, it detaches from the abutment part, returning the elastic member to its natural state.

7. A locking / opening device as described in claim 1, characterized in that the engaging body has an engaging body abutment portion that abuts against the rotation limiting portion in the restricted state, and an abutment maintaining portion is provided to maintain the engaging body abutment portion in a state in which it abuts against the rotation limiting portion.

8. The locking and opening device according to claim 1, further comprising an unlocking angle maintaining unit that maintains the engaging body and the lock at the unlocking angle.

9. The locking / opening device according to claim 1, characterized in that the key can be inserted and removed at both the locking angle and the unlocking angle, and when the key is removed at the locking angle or the unlocking angle, the angle at which the key was removed is maintained.

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