Sliding door lock with lock cylinder inner positioning structure

Abstract

The utility model relates to the technical field of sliding door locks, in particular to a sliding door lock with a lock cylinder inner positioning structure, which comprises a lock cylinder seat, the lock cylinder seat comprises a first lock shell, a lock cylinder, a rotary shifting block, a linkage device, a rotation stopping device and a transmission device, the lock cylinder comprises a lock cylinder shell and a lock cylinder inner core, the lock cylinder shell is arranged on the first lock shell in a penetrating manner, and the rotary shifting block is arranged on the lock cylinder shell. The lock cylinder inner core is rotatably arranged in the lock cylinder shell, the linkage device is connected with the rotary shifting block and the lock cylinder inner core, and the rotation stopping device is connected with the rotary shifting block and the lock cylinder shell; the lock hook seat comprises a second lock shell, a lock hole, a lever mechanism and a lock hook; according to the sliding door lock with the lock cylinder inner positioning structure, the rotating angles of the lock cylinder inner core and the rotating shifting block can be limited, and a transmission structure in the sliding door lock is prevented from being maliciously damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to push and pull door lock technical field especially has the push and pull door lock of locking core inner positioning structure. BACKGROUND

[0002] Some push and pull doors when closing the lock hook that extends is buckled in the lock hole of another mobile door or door frame, and the door is locked after the lock hook is hooked, and the lock hook is retracted by the handle or knob on the door panel to unlock. In order to simplify the structure of the internal transmission device, the existing push and pull door lock designs a transmission device that a rotating block and a transmission component cooperate, wherein the rotating block rotates with the inner core of the lock core, so as to rotate the horizontal rotation of the inner core of the lock core to the movement in other directions. However, when the inner core of the lock core is subjected to violent rotation, the rotating block is also in the condition of excessive rotation, which easily causes damage to the rotating block or the transmission component, affecting the normal use of the push and pull door lock.

[0003] It can be seen that the prior art still needs to be improved and improved. INVENTION CONTENTS

[0004] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a push and pull door lock with a locking core inner positioning structure to solve the problem that the locking core of the existing push and pull door lock is easily damaged by excessive rotation of the internal transmission structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The push and pull door lock with the locking core inner positioning structure comprises:

[0007] The lock core seat comprises a first lock shell, a lock core, a rotating block, a linkage device, a rotation stopping device and a transmission device, the lock core comprises a lock core shell and an inner core, the lock core shell is provided on the first lock shell, the inner core is rotatably arranged in the lock core shell, the linkage device connects the rotating block and the inner core, the rotation stopping device connects the rotating block and the lock core shell, and the transmission device is arranged in the first lock shell, one end of the transmission device is connected with the rotating block.

[0008] The lock hook seat comprises a second lock shell, a lock hole, a lever mechanism and a lock hook, the second lock shell is arranged on one side of the first lock shell, the lock hole is provided on the side of the second lock shell away from the first lock shell, the lock hook is rotatably arranged in the second lock shell, and the two ends of the lever mechanism are respectively hinged with the other end of the transmission device and the lock hook.

[0009] As described above, in the push-pull door lock with an internal positioning structure of the lock cylinder, the lock cylinder shell is provided with a clearance groove on the side facing the rotating block, the linkage device is rotatably disposed in the clearance groove, and the anti-rotation device is connected to the outer side of the linkage device and the inner side of the clearance groove respectively.

[0010] As described above, in the push-pull door lock with an internal positioning structure of the lock cylinder, the linkage device includes a locking groove and two clamping blocks. The locking groove and the two clamping blocks are respectively located on the side of the rotating block facing the inner core of the lock cylinder. One end of the inner core of the lock cylinder is inserted into the locking groove. The two clamping blocks are respectively located on both sides of the locking groove and clamp the inner core of the lock cylinder on both sides. The anti-rotation device is located between any of the clamping blocks and the clearance groove.

[0011] As described above, in a push-pull door lock with an internal positioning structure of the lock cylinder, the anti-rotation device includes an anti-rotation block and an arc-shaped groove. The arc-shaped groove is provided on the clearance groove, and the anti-rotation block protrudes from the outside of the clamping block. The anti-rotation block is movably engaged in the arc-shaped groove.

[0012] As described above, in a push-pull door lock with an internal positioning structure within the lock cylinder, the rotating lever includes a first rotating plate and multiple levers. The first rotating plate is connected to the inner core of the lock cylinder via the linkage device. The multiple levers surround the periphery of the first rotating plate. The transmission device includes a second rotating plate, a lever, a lifting mechanism, and a groove. The lifting mechanism is located above the lock cylinder, and the lever mechanism is hinged to the lifting mechanism. The groove is located on one side of the lifting mechanism. The second rotating plate is rotatably disposed within the first lock housing. The lever is located on the side of the second rotating plate facing the rotating lever. The lever is engaged with the groove, and the end of the lever away from the second rotating plate is positioned between two adjacent levers.

[0013] As described above, the push-pull door lock with an internal positioning structure of the lock cylinder includes a lifting mechanism comprising a first upright plate, a second upright plate, two sliding grooves, a sliding block, a locking element, and a connecting rod. The first upright plate and the second upright plate are respectively disposed opposite to each other within the first lock housing. The two sliding grooves are respectively disposed opposite to each other on the first upright plate and the second upright plate. The sliding block and the locking element are respectively disposed on opposite sides of the first upright plate and the second upright plate. The two ends of the connecting rod are respectively slidably inserted through the two sliding grooves. The two ends of the connecting rod are respectively connected to the sliding block and the locking element. The groove is disposed on one side of the sliding block. One end of the lever mechanism is sleeved on the connecting rod.

[0014] As described above, in a push-pull door lock with an internal positioning structure of the lock cylinder, the first lock shell includes a face shell, a back shell, and a through hole. The face shell and the back shell are disposed opposite to each other and connected. The through hole is located on the back shell. The first upright plate is connected to the face shell, and the second upright plate is connected to the back shell. The sliding block includes a sliding part and a traction part. The sliding part is connected to the connecting rod, and the traction part is movably disposed in the through hole and connected to the sliding part.

[0015] As described above, the push-pull door lock with an internal positioning structure of the lock cylinder includes a lever mechanism comprising a first fixed post, a second fixed post, a transmission arm, a swing arm, a first hinge post, and a second hinge post. The first fixed post and the second fixed post are adjacent to each other inside the second lock housing. The first hinge post is disposed on the swing arm, and the second hinge post is disposed on the side of the lock hook near the lever mechanism. The transmission arm is rotatably disposed on the first fixed post. One end of the transmission arm is sleeved on the connecting rod, and the other end of the transmission arm is hinged to the first hinge post. One end of the swing arm is sleeved on the second fixed post, and the other end of the swing arm is hinged to the second hinge post.

[0016] Beneficial effects:

[0017] This utility model discloses a push-pull door lock with an internal positioning structure for the lock cylinder, including a lock cylinder seat and a lock hook seat. It includes a first lock shell, a lock cylinder, a rotating paddle, a linkage device, an anti-rotation device, and a transmission device. The lock cylinder includes a lock cylinder housing and a lock cylinder inner core. The lock hook seat includes a second lock shell, a keyhole, a lever mechanism, and a lock hook. The lock cylinder housing is fixedly connected to the first lock shell. Inserting a key causes the lock cylinder inner core to rotate within the lock cylinder housing. Simultaneously, the linkage device connects the lock cylinder inner core and the rotating paddle, causing the rotating paddle to rotate synchronously. The rotating paddle cooperates with the transmission device and drives the transmission device to move. The lock hook is rotatably disposed within the second lock shell. The transmission device and the lever mechanism cause the lock hook to extend out of the keyhole. The anti-rotation device limits the rotation angle of the rotating paddle relative to the lock cylinder housing and also limits the rotation angle of the lock cylinder inner core. The push-pull door lock disclosed in this application can limit the rotation angle of the lock cylinder inner core and the rotating paddle, preventing malicious damage to the internal transmission structure of the push-pull door lock. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the push-pull door lock provided by this utility model;

[0019] Figure 2 Exploded view of the push-pull door lock provided by this utility model;

[0020] Figure 3 An exploded view of the push-pull door lock provided by this utility model from another angle;

[0021] Figure 4 An exploded view of the lock hook seat provided by this utility model;

[0022] Figure 5 Exploded view of the lock cylinder provided by this utility model;

[0023] Figure 6 An exploded view of the lock cylinder provided by this utility model from another angle;

[0024] Reference numerals: 1. Lock cylinder seat; 11. First lock shell; 111. Face shell; 112. Back shell; 113. Through hole; 12. Lock cylinder; 121. Lock cylinder shell; 122. Lock cylinder inner core; 123. Clearing groove; 13. Rotating lever; 131. First rotating plate; 132. Lever; 14. Linkage device; 141. Snap-fit ​​groove; 142. Clamping block; 15. Anti-rotation device; 151. Anti-rotation block; 152. Arc groove; 16. Transmission device; 161. Second rotating plate; 162. Lever; 1 63. Lifting mechanism; 164. Groove; 165. First upright plate; 166. Second upright plate; 167. Slide groove; 168. Sliding block; 1681. Sliding part; 1682. Traction part; 169. Locking element; 160. Connecting rod; 2. Lock hook seat; 21. Second lock housing; 22. Lock hole; 23. Lever mechanism; 231. First fixed column; 232. Second fixed column; 233. Transmission arm; 234. Swing arm; 235. First hinge column; 236. Second hinge column; 24. Lock hook. Detailed Implementation

[0025] This utility model provides a push-pull door lock with an internal positioning structure in the lock cylinder. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and examples.

[0026] In the description of this utility model, it should be understood that the terms "top" and other terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and should not be construed as limiting this utility model; in addition, the terms "installation" and "connection" should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] like Figures 1-6 As shown in the figure, this application embodiment proposes a push-pull door lock with an internal positioning structure of the lock cylinder, including:

[0028] A lock cylinder base 1 includes a first lock shell 11, a lock cylinder 12, a rotating lever 13, a linkage device 14, an anti-rotation device 15, and a transmission device 16. The lock cylinder 12 includes a lock cylinder shell 121 and a lock cylinder inner core 122. The lock cylinder shell 121 is inserted into the first lock shell 11, and the lock cylinder inner core 122 is rotatably disposed within the lock cylinder shell 121. The linkage device 14 connects the rotating lever 13 and the lock cylinder inner core 122. The anti-rotation device 15 connects the rotating lever 13 and the lock cylinder shell 121. The transmission device 16 is disposed within the first lock shell 11, and one end of the transmission device 16 is connected to the rotating lever 13.

[0029] The lock hook seat 2 includes a second lock housing 21, a lock hole 22, a lever mechanism 23, and a lock hook 24. The second lock housing 21 is disposed on one side of the first lock housing 11. The lock hole 22 passes through the second lock housing 21 on the side away from the first lock housing 11. The lock hook 24 is rotatably disposed inside the second lock housing 21. The two ends of the lever mechanism 23 are respectively hinged to the other end of the transmission device 16 and the lock hook 24.

[0030] This utility model discloses a push-pull door lock with an internal positioning structure for the lock cylinder, including a lock cylinder seat 1 and a lock hook seat 2. It includes a first lock shell 11, a lock cylinder 12, a rotating lever 13, a linkage device 14, an anti-rotation device 15, and a transmission device 16. The lock cylinder 12 includes a lock cylinder housing 121 and a lock cylinder inner core 122. The lock hook seat 2 includes a second lock shell 21, a keyhole 22, a lever mechanism 23, and a lock hook 24. The lock cylinder housing 121 is fixedly connected to the first lock shell 11. Inserting a key can cause the lock cylinder inner core 122 to rotate within the lock cylinder housing 121. Simultaneously, the linkage device 14 connects the lock cylinder inner core 122 and the rotating lever 13. The rotating paddle 13 is driven to rotate synchronously. The rotating paddle 13 cooperates with the transmission device 16 and drives the transmission device 16 to move. The lock hook 24 is rotatably disposed in the second lock shell 21. The lock hook 24 is driven to extend out of the lock hole 22 through the transmission device 16 and the lever mechanism 23. The anti-rotation device 15 restricts the rotation angle of the rotating paddle 13 relative to the lock cylinder shell 121, and at the same time restricts the rotation angle of the lock cylinder inner core 122. The push-pull door lock disclosed in this application can restrict the rotation angle of the lock cylinder inner core 122 and the rotating paddle 13, and prevent malicious damage to the internal transmission structure of the push-pull door lock.

[0031] The lock cylinder shell 121 has a clearance groove 123 on the side facing the rotating lever 13. The linkage device 14 is rotatably disposed in the clearance groove 123. The anti-rotation device 15 is connected to the outer side of the linkage device 14 and the inner side of the clearance groove 123 respectively. The clearance groove 123 can hide the linkage device 14 and the anti-rotation device 15, which is conducive to the miniaturization and thinning of the entire push-pull door lock.

[0032] The linkage device 14 includes a locking groove 141 and two clamping blocks 142. The locking groove 141 and the two clamping blocks 142 are respectively located on the side of the rotating lever 13 facing the inner core 122 of the lock cylinder. One end of the inner core 122 of the lock cylinder is inserted into the locking groove 141. The two clamping blocks 142 are respectively located on both sides of the locking groove 141 and clamp the inner core 122 of the lock cylinder on both sides. The anti-rotation device 15 is located between any of the clamping blocks 142 and the clearance groove 123. It is locked to the end of the inner core 122 of the lock cylinder by the locking groove 141 and clamped to both sides of the inner core 122 of the lock cylinder by the two clamping blocks 142, thus doubly locking and preventing slippage between the inner core 122 of the lock cylinder and the rotating lever 13, ensuring the flexibility of opening and closing the lock.

[0033] The anti-rotation device 15 includes an anti-rotation block 151 and an arc-shaped groove 152. The arc-shaped groove 152 is located on the clearance groove 123. The anti-rotation block 151 protrudes from the outer side of the clamping block 142. The anti-rotation block 151 is movably engaged in the arc-shaped groove 152. When the anti-rotation block 151 is engaged on both sides of the arc-shaped groove 152, it stops rotation. The arc-shaped groove 152 provides a certain amount of rotation space for the anti-rotation block 151, allowing a certain amount of time for the key to engage and match with the inner core 122 of the lock cylinder, thus preventing direct twisting of the inner core 122 to trigger unlocking and improving security.

[0034] The rotating paddle 13 includes a first rotating plate 131 and multiple paddles 132. The first rotating plate 131 is connected to the inner core 122 of the lock cylinder via the linkage device 14. The multiple paddles 132 surround the periphery of the first rotating plate 131. The transmission device 16 includes a second rotating plate 161, a lever 162, a lifting mechanism 163, and a groove 164. The lifting mechanism 163 is located above the lock cylinder 12, and the lever mechanism 23 is hinged to the lifting mechanism 163. The groove 164 is located on one side of the lifting mechanism 163. The second rotating plate 161 is rotatably disposed within the first lock housing 11. The lever 162 is located on the side of the second rotating plate 161 facing the rotating paddle 13, and the lever 162 engages with the rotating paddle 13. The lever 162, attached to the groove 164, has one end away from the second rotating plate 161 positioned between two adjacent lever blocks 132. By levering the lever 162 on the periphery of the rotating lever block 13, the second rotating plate 161 swings, and the lever 162 drives the lifting mechanism 163 to rise and fall. The lifting mechanism 163, in conjunction with the lever mechanism 23, causes the lock hook 24 to extend or retract into the second lock housing 21. A certain gap exists between adjacent lever blocks 132, allowing either lever block 132 to contact the lever 162 only after the lock cylinder 12 has rotated a certain angle. This prevents the lock cylinder 12 from being slightly rotated by external force, thus triggering the unlocking of the push-pull door lock and improving its security.

[0035] The lifting mechanism 163 includes a first upright plate 165, a second upright plate 166, two sliding grooves 167, a sliding block 168, a locking element 169, and a connecting rod 160. The first upright plate 165 and the second upright plate 166 are respectively disposed opposite to each other in the first lock housing 11. The two sliding grooves 167 are respectively disposed opposite to each other on the first upright plate 165 and the second upright plate 166. The sliding block 168 and the locking element 169 are respectively disposed on opposite sides of the first upright plate 165 and the second upright plate 166. The two ends of the connecting rod 160 are respectively The lever mechanism 23 is slidably mounted on the two grooves 167. The two ends of the connecting rod 160 are respectively connected to the sliding block 168 and the locking member 169. The groove 164 is provided on one side of the sliding block 168. One end of the lever mechanism 23 is sleeved on the connecting rod 160. Through the cooperation of the lever 162 and the groove 164, the rotation of the lock cylinder 12 is converted into the up and down sliding of the sliding block 168. The sliding block 168 drives the connecting rod 160 to move up and down in the groove 167, thereby triggering the lever mechanism 23.

[0036] The first lock housing 11 includes a face shell 111, a back shell 112, and a through hole 113. The face shell 111 and the back shell 112 are opposite to each other and connected. The through hole 113 is provided on the back shell 112. The first upright plate 165 is connected to the face shell 111, and the second upright plate 166 is connected to the back shell 112. The sliding block 168 includes a sliding part 1681 and a traction part 1682. The sliding part 1681 is connected to the connecting rod 160. The traction part 1682 is movably disposed in the through hole 113 and connected to the sliding part 1681. The user can push and pull the sliding part 1681 through the traction part 1682 from inside the door, thereby locking or unlocking the push-pull door lock.

[0037] The lever mechanism 23 includes a first fixed post 231, a second fixed post 232, a transmission arm 233, a swing arm 234, a first hinge post 235, and a second hinge post 236. The first fixed post 231 and the second fixed post 232 are adjacent to each other inside the second lock housing 21. The first hinge post 235 is disposed on the swing arm 234, and the second hinge post 236 is disposed on the side of the lock hook 24 near the lever mechanism 23. The transmission arm 233 is rotatably disposed on the first fixed post 231. One end of the transmission arm 233 is sleeved on the connecting rod 160, and the other end of the transmission arm 233 is hinged to the first hinge post 235. One end of the swing arm 234 is sleeved on the second fixed post 232, and the other end of the swing arm 234 is hinged to the second hinge post 236. The use of a lever structure for transmission helps to reduce the stroke required for transmission, reduce the rotation size, and facilitate the miniaturization of the push-pull door lock.

[0038] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A push-pull door lock with an internal positioning structure in the lock cylinder, characterized in that, include: A lock cylinder base (1) includes a first lock shell (11), a lock cylinder (12), a rotating paddle (13), a linkage device (14), an anti-rotation device (15), and a transmission device (16). The lock cylinder (12) includes a lock cylinder shell (121) and a lock cylinder inner core (122). The lock cylinder shell (121) is inserted through the first lock shell (11), and the lock cylinder inner core (122) is rotatably disposed inside the lock cylinder shell (121). The linkage device (14) connects the rotating paddle (13) and the lock cylinder inner core (122). The anti-rotation device (15) connects the rotating paddle (13) and the lock cylinder shell (121). The transmission device (16) is disposed inside the first lock shell (11), and one end of the transmission device (16) is connected to the rotating paddle (13). The lock hook seat (2) includes a second lock shell (21), a lock hole (22), a lever mechanism (23), and a lock hook (24). The second lock shell (21) is located on one side of the first lock shell (11). The lock hole (22) is located on the side of the second lock shell (21) away from the first lock shell (11). The lock hook (24) is rotatably located inside the second lock shell (21). The two ends of the lever mechanism (23) are respectively hinged to the other end of the transmission device (16) and the lock hook (24).

2. The push-pull door lock with an internal positioning structure according to claim 1, characterized in that, The lock cylinder shell (121) is provided with a clearance groove (123) on the side facing the rotating paddle (13). The linkage device (14) is rotatably disposed in the clearance groove (123). The anti-rotation device (15) is connected to the outer side of the linkage device (14) and the inner side of the clearance groove (123) respectively.

3. The push-pull door lock with an internal positioning structure according to claim 2, characterized in that, The linkage device (14) includes a snap-fit ​​groove (141) and two clamping blocks (142). The snap-fit ​​groove (141) and the two clamping blocks (142) are respectively located on the side of the rotating block (13) facing the inner core of the lock cylinder (122). One end of the inner core of the lock cylinder (122) is inserted into the snap-fit ​​groove (141). The two clamping blocks (142) are respectively located on both sides of the snap-fit ​​groove (141) and clamp the inner core of the lock cylinder (122) on both sides. The anti-rotation device (15) is located between any of the clamping blocks (142) and the clearance groove (123).

4. The push-pull door lock with an internal positioning structure according to claim 3, characterized in that, The anti-rotation device (15) includes an anti-rotation block (151) and an arc-shaped groove (152). The arc-shaped groove (152) is provided on the clearance groove (123). The anti-rotation block (151) protrudes from the outside of the clamping block (142). The anti-rotation block (151) is movably engaged in the arc-shaped groove (152).

5. The push-pull door lock with an internal positioning structure according to claim 1, characterized in that, The rotating lever (13) includes a first rotating plate (131) and multiple levers (132). The first rotating plate (131) is connected to the inner core (122) of the lock cylinder via the linkage device (14). The multiple levers (132) are arranged around the periphery of the first rotating plate (131). The transmission device (16) includes a second rotating plate (161), a lever (162), a lifting mechanism (163), and a groove (164). The lifting mechanism (163) is located above the lock cylinder (12). The lever mechanism... (23) Hinged to the lifting mechanism (163), the groove (164) is provided on one side of the lifting mechanism (163), the second rotating plate (161) is rotatably provided in the first lock housing (11), the lever (162) is provided on the side of the second rotating plate (161) facing the rotating block (13), the lever (162) is engaged in the groove (164), and the end of the lever (162) away from the second rotating plate (161) is mounted between two adjacent blocks (132).

6. The push-pull door lock with an internal positioning structure according to claim 5, characterized in that, The lifting mechanism (163) includes a first upright plate (165), a second upright plate (166), two sliding grooves (167), a sliding block (168), a locking element (169), and a connecting rod (160). The first upright plate (165) and the second upright plate (166) are respectively disposed opposite to each other in the first lock housing (11). The two sliding grooves (167) are respectively disposed opposite to each other on the first upright plate (165) and the second upright plate (166). The sliding block (169) and the connecting rod (160) are respectively disposed opposite to each other on the first upright plate (165) and the second upright plate (166). Locking elements (169) are respectively provided on the opposite sides of the first upright plate (165) and the second upright plate (166). The two ends of the connecting rod (160) are respectively slidably passed through the two sliding grooves (167). The two ends of the connecting rod (160) are respectively connected to the sliding block (168) and the locking elements (169). The groove (164) is provided on one side of the sliding block (168). One end of the lever mechanism (23) is sleeved on the connecting rod (160).

7. The push-pull door lock with an internal positioning structure according to claim 6, characterized in that, The first lock housing (11) includes a face shell (111), a back shell (112), and a through hole (113). The face shell (111) is disposed opposite to and connected to the back shell (112). The through hole (113) is disposed on the back shell (112). The first upright plate (165) is connected to the face shell (111), and the second upright plate (166) is connected to the back shell (112). The sliding block (168) includes a sliding part (1681) and a traction part (1682). The sliding part (1681) is connected to the connecting rod (160), and the traction part (1682) is movably disposed in the through hole (113) and connected to the sliding part (1681).

8. The push-pull door lock with an internal positioning structure according to claim 6, characterized in that, The lever mechanism (23) includes a first fixed post (231), a second fixed post (232), a transmission arm (233), a swing arm (234), a first hinge post (235), and a second hinge post (236). The first fixed post (231) and the second fixed post (232) are arranged adjacent to each other in the second lock housing (21). The first hinge post (235) is arranged on the swing arm (234), and the second hinge post (236) is arranged on the lock hook (24). On the side near the lever mechanism (23), the transmission arm (233) is rotatably mounted on the first fixed post (231), one end of the transmission arm (233) is sleeved on the connecting rod (160), and the other end of the transmission arm (233) is hinged to the first hinge post (235). One end of the swing arm (234) is sleeved on the second fixed post (232), and the other end of the swing arm (234) is hinged to the second hinge post (236).

Images