Docking bed locking device

Abstract

The application discloses a docking bed locking device, which comprises two main locks, a linkage shaft connecting the two main locks and four unlocking handles, wherein the main lock comprises a lock tongue, a reset spring, an unlocking block and an unlocking shaft, the linkage shaft and the unlocking shaft are installed through the unlocking block, the axis of the linkage shaft and the unlocking shaft are perpendicular to each other and have a height difference, a first shift pin is arranged on the linkage shaft, and a second shift pin is arranged on the unlocking shaft, the two ends of the linkage shaft are connected with the first unlocking handle and the third unlocking handle respectively, the unlocking shaft is connected with the second unlocking handle and the fourth unlocking handle respectively, and the four unlocking handles are located near the four side edges of the docking bed. When the first unlocking handle or the third unlocking handle is rotated, the linkage shaft is rotated and drives the first shift pin to shift the unlocking block and the lock tongue to slide upward and unlock; when the second unlocking handle or the fourth unlocking handle is rotated, the unlocking shaft is rotated and drives the second shift pin to shift the unlocking block and the lock tongue to slide upward and unlock; and when the unlocking handle is not rotated, the lock tongue is in a locking state under the action of the reset spring.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a locking device for a docking bed. Background Technology

[0002] Most existing medical docking beds use a pin and latch structure. During docking, the bed is pushed from a designated direction to the corresponding position on the bed support, causing the pin to engage with the latch and lock the bed in place. To unlock, the latch is released, and the bed is pushed out from the designated direction. However, docking using the pin and latch structure only allows for one-way pushing and pushing; otherwise, the bed cannot be locked. Furthermore, unlocking can only be done from the location where the pin and latch are set, which is very inconvenient. Summary of the Invention

[0003] Purpose of the invention: To address the shortcomings of existing docking beds that have only one docking direction and are inconvenient to unlock, this invention provides a docking bed locking device that can dock in both directions and has multiple unlocking devices.

[0004] Technical Solution: To solve the above problems, the present invention employs a docking bed locking device, comprising a first main lock, a second main lock, and a linkage shaft connecting the first and second main locks; the first main lock is connected to a first unlocking handle and a second unlocking handle, and the second main lock is connected to a third unlocking handle and a fourth unlocking handle; the first and second main locks have the same main lock structure, the main lock structure including a latch, a return spring, an unlocking block, and an unlocking shaft, the latch being mounted on the unlocking block, one end of the return spring being connected to the unlocking block, and the other end being fixed within the main lock structure; the linkage shaft and the unlocking shaft are installed through the unlocking block, and the axes of the linkage shaft and the unlocking shaft are perpendicular to each other and have a height difference; the linkage shaft is provided with a first pin for moving the unlocking block, and the unlocking shaft is provided with a second pin for moving the unlocking block; both ends of the linkage shaft are connected to the first unlocking handle and the third unlocking handle respectively, and the unlocking shaft is connected to the second unlocking handle and the fourth unlocking handle respectively, the second unlocking handle and the fourth unlocking handle being arranged parallel to each other;

[0005] When the first or third unlocking handle is turned, the linkage shaft rotates and drives the first pin to slide the unlocking block and the lock tongue upward to unlock. When the second or fourth unlocking handle is turned, the unlocking shaft rotates and drives the second pin to slide the unlocking block and the lock tongue upward to unlock. When the unlocking handle is not turned, the unlocking block and the lock tongue are locked under the action of the return spring.

[0006] Furthermore, the unlocking block is provided with a first through hole and a second through hole, the axes of the first through hole and the second through hole are perpendicular to each other and have a height difference; the linkage shaft is installed in the first through hole of the first master lock and the second master lock, and the unlocking shaft is installed in the second through hole; the inner height of the first through hole is greater than the shaft diameter of the linkage shaft, so that the unlocking block can move up and down relative to the linkage shaft; the inner height of the second through hole is greater than the shaft diameter of the unlocking shaft, so that the unlocking block can move up and down relative to the unlocking shaft.

[0007] Furthermore, a first cam is sleeved on the linkage shaft, one side of the first cam abuts against the unlocking block, the first pin is installed on the first cam, the unlocking block is provided with a first sliding groove, and one end of the first pin is located in the first sliding groove; when the linkage shaft rotates, the first cam rotates with the linkage shaft, causing the first pin to drive the unlocking block and the lock tongue to slide upward to unlock.

[0008] Furthermore, a second cam is sleeved on the unlocking shaft, one side of the second cam abuts against the unlocking block, the second pin is installed on the second cam, the unlocking block is provided with a second sliding groove, and one end of the second pin is located in the second sliding groove; when the unlocking shaft rotates, the second cam rotates with the unlocking shaft, causing the second pin to drive the unlocking block and the locking tongue to slide upward to unlock.

[0009] Furthermore, the main lock structure also includes a lock box, in which the bolt, return spring, unlocking block and unlocking shaft are housed, and the lock box has openings corresponding to the positions of the linkage shaft, unlocking shaft and bolt.

[0010] Furthermore, the unlocking block is also provided with a groove, one end of the reset spring is fixed to the inner top surface of the lock box, and the other end of the reset spring is fixed in the groove.

[0011] Furthermore, the main lock structure also includes a bolt guide seat, which has a guide groove in which the bolt slides.

[0012] Furthermore, the locking tongue is fixedly mounted on the unlocking block by a pin.

[0013] Furthermore, it also includes a docking bed, on which the first main lock, the second main lock, the first unlocking handle, the second unlocking handle, the third unlocking handle, and the fourth unlocking handle are all installed.

[0014] Furthermore, it also includes a bed support for use with the docking bed, the bed support having a locking stop, the locking stop having inclined surfaces on both sides, and a locking hole in the middle of the locking stop for engaging with the locking tongue.

[0015] Beneficial effects: Compared with the prior art, the significant advantages of this invention are: (1) By setting four unlocking handles located near the four sides of the docking bed, the docking bed can be unlocked from multiple directions without having to be in a designated position, which is more convenient; (2) The two main locks are connected by a linkage shaft, and the two main locks can be unlocked synchronously by rotating any unlocking handle; (3) The locking device is centrally symmetrical, and the docking bed can be pushed in from any direction, making docking more efficient and convenient; (4) The docking bed is locked by a locking tongue, which has a greater locking strength than the snap-fit ​​structure, and the docking bed can withstand greater pushing and pulling forces; (5) A reset spring is set so that the docking bed is automatically locked when it is connected and when the unlocking handle is not rotated, ensuring the stability of the docking bed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the docking bed locking device of the present invention installed on the docking bed;

[0017] Figure 2 This is a schematic diagram of the overall structure of the docking bed locking device of the present invention;

[0018] Figure 3 This is a schematic diagram of the external structure of the main lock of the present invention;

[0019] Figure 4 This is an exploded view of the main lock structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the internal structure of the main lock structure of the present invention;

[0021] Figure 6 This is a schematic diagram of the unlocking block structure of the present invention;

[0022] Figure 7 This is a schematic diagram of the internal structure of the main lock structure in the locked state of the present invention;

[0023] Figure 8 This is a schematic diagram of the internal structure of the main lock structure in the unlocked state of the present invention;

[0024] Figure 9 This is a schematic diagram of the main lock structure and locking mechanism of the present invention. Detailed Implementation

[0025] like Figure 1 and Figure 2 As shown, a docking bed locking device in this embodiment includes a left main lock 1, a right main lock 2, a linkage shaft 3 connecting the left main lock 1 and the right main lock 2, and four unlocking handles. The left main lock 1 and the right main lock 2 have the same main lock structure, as shown... Figures 3 to 5 As shown, the main lock structure includes a lock housing 15 and a bolt 11, a return spring 12, an unlocking block 13, an unlocking shaft 14, and a bolt guide seat 16 housed within the lock housing 15. Figure 6As shown, the unlocking block 13 includes two vertically arranged rectangular blocks. One rectangular block has a first through hole 131 and a first sliding groove 133, with the axis of the first sliding groove 133 perpendicular to the axis of the first through hole 131. The other rectangular block has a second through hole 132, a second sliding groove 134, a groove 135, and a latch hole for mounting the latch 11, with the axis of the second sliding groove 134 perpendicular to the axis of the second through hole 132. The axes of the first through hole 131 and the second through hole 132 are perpendicular to each other and have a height difference. The two sides of the first through hole 131 and the second through hole 132 are arc-shaped and connected by a straight line. The inner height of the first through hole 131 is greater than the diameter of the linkage shaft 3, allowing the unlocking block 13 to move up and down relative to the linkage shaft 3. The inner height of the second through hole 132 is greater than the diameter of the unlocking shaft 14, allowing the unlocking block 13 to move up and down relative to the unlocking shaft 14.

[0026] The linkage shaft 3 is installed in the first through hole 131 of the left main lock 1 and the right main lock 2, with both ends of the linkage shaft 3 extending out of the first through hole 131. The unlocking shaft 14 is installed in the second through hole 132, with the axis of the linkage shaft 3 perpendicular to the axis of the unlocking shaft 14 and the linkage shaft 3 located above the unlocking shaft 14. One end of the return spring 13 is fixed to the inner top surface of the lock box 15, and the other end is fixed in the groove 135. The latch 11 is installed in the latch hole via the pin 20. The latch guide seat 16 is located at the bottom of the main lock structure, and the latch guide seat 16 has a guide groove 161, in which the latch 11 slides. The lock box 15 has openings corresponding to the positions of the linkage shaft 3, the unlocking shaft 14, and the latch 11 for the corresponding components to extend out.

[0027] A first cam 31 is fitted onto the linkage shaft 3. One side of the first cam 31 abuts against the unlocking block 13. A first pin 32 is provided at the protruding point of the first cam 31, and one end of the first pin 32 is located in the first slide groove 133. When the linkage shaft 3 rotates, the first cam 31 rotates with the linkage shaft 3, causing the first pin 32 to drive the unlocking block 13 and the locking tongue 11 to slide upward and unlock. A second cam 141 is fitted onto the unlocking shaft 14. One side of the second cam 141 abuts against the unlocking block 13. A second pin 142 is provided at the protruding point of the second cam 141, and one end of the second pin 142 is located in the second slide groove 134. When the unlocking shaft 14 rotates, the second cam 141 rotates with the unlocking shaft 14, causing the second pin 142 to drive the unlocking block 13 and the locking tongue 11 to slide upward and unlock.

[0028] Linkage shaft 3 connects the left master lock 1 and the right master lock 2. Both ends of linkage shaft 3 extend from the left master lock 1 and the right master lock 2 and are respectively connected to the first unlocking handle 4 and the third unlocking handle 6. The unlocking shafts 14 of the left master lock 1 and the right master lock 2 extend in opposite directions. The unlocking shaft 14 of the left master lock 1 is connected to the second unlocking handle 5 via an extension rod 51, and the unlocking shaft 14 of the right master lock 2 is connected to the fourth unlocking handle 7 via an extension rod 71. The left master lock 1, the right master lock 2, and the four unlocking handles are all installed on the docking bed 17. The left master lock 1 and the right master lock 2 are fixedly installed on the docking bed 17 via a mounting plate 19. Figure 9 As shown, the bed support used in conjunction with the docking bed 17 is provided with a locking stop 18. The locking stop 18 has inclined surfaces on both sides and a locking hole in the middle of the locking stop 18 that cooperates with the locking tongue 11.

[0029] like Figure 7 and Figure 8 As shown, the working principle of the docking bed locking device of the present invention is as follows: During docking, the docking bed 17 is pushed into the bed support 18 from either the front or rear side. When the locking tongue 11 passes the inclined surface of the locking stop 181, it gradually retracts into the lock box 15. After entering the lock hole, under the action of the return spring 12, the locking tongue 11 extends and locks into the lock hole, completing the docking bed locking. During unlocking, any unlocking handle can be rotated. When the first unlocking handle 4 or the third unlocking handle 6 is rotated, the linkage shaft 3 rotates and drives the first deflector 32 to push the unlocking block 13 and the locking tongue 11 upward to slide and unlock. The left main lock 1 and the right main lock 2 are unlocked simultaneously under the action of the linkage shaft 3. When the second unlocking handle 5 or the fourth unlocking handle 4 is rotated, the unlocking shaft 14 rotates and drives the second deflector 142 to push the unlocking block 13 and the locking tongue 11 upward to slide and unlock. The upward sliding of the unlocking block 13 drives the linkage shaft 3 to rotate, and the left main lock 1 and the right main lock 2 are unlocked simultaneously under the action of the linkage shaft 3.

[0030] This invention features four unlocking handles located near the four sides of the docking bed, allowing for unlocking from multiple directions without requiring a specific location, thus enhancing convenience. The two main locks are connected by a linkage shaft, enabling simultaneous unlocking by rotating either unlocking handle. The locking device is centrally symmetrical, allowing the docking bed to be pushed in from either front or rear. The use of a locking tongue provides greater locking strength compared to a snap-fit ​​structure, allowing the docking bed to withstand greater pushing and pulling forces. A return spring ensures automatic locking upon docking bed insertion and when the unlocking handle is not rotated, guaranteeing the stability of the docking bed.

Claims

1. A locking device for docking beds, characterized in that, The system includes a first main lock (1), a second main lock (2), and a linkage shaft (3) connecting the first main lock (1) and the second main lock (2); the first main lock (1) is connected to a first unlocking handle (4) and a second unlocking handle (5), and the second main lock (2) is connected to a third unlocking handle (6) and a fourth unlocking handle (7); the first main lock (1) and the second main lock (2) have the same main lock structure, which includes a bolt (11), a return spring (12), an unlocking block (13), and an unlocking shaft (14). The bolt (11) is mounted on the unlocking block (13), and one end of the return spring (12) is connected to the unlocking block (13). The other end is fixed inside the main lock structure; the linkage shaft (3) and the unlocking shaft (14) are installed through the unlocking block (13), and the axes of the linkage shaft (3) and the unlocking shaft (14) are perpendicular to each other and have a height difference; the linkage shaft (3) is provided with a first pin (32) for moving the unlocking block (13), and the unlocking shaft (14) is provided with a second pin (142) for moving the unlocking block (13); the two ends of the linkage shaft (3) are respectively connected to the first unlocking handle (4) and the third unlocking handle (6), and the unlocking shaft (14) is respectively connected to the second unlocking handle (5) and the fourth unlocking handle (7), and the second unlocking handle (5) and the fourth unlocking handle (7) are arranged in parallel; A first cam (31) is sleeved on the linkage shaft (3). One side of the first cam (31) abuts against the unlocking block (13). The first pin (32) is installed on the first cam (31). The unlocking block (13) is provided with a first slide groove (133). One end of the first pin (32) is located in the first slide groove (133). When the linkage shaft (3) rotates, the first cam (31) rotates with the linkage shaft (3), causing the first pin (32) to drive the unlocking block (13) and the locking tongue (11) to slide upward to unlock. The unlocking shaft (14) is fitted with a second cam (141), one side of which abuts against the unlocking block (13). The second pin (142) is mounted on the second cam (141). The unlocking block (13) is provided with a second groove (134), and one end of the second pin (142) is located in the second groove (134). When the unlocking shaft (14) rotates, the second cam (141) rotates with the unlocking shaft (14), causing the second pin (142) to drive the unlocking block (13) and the locking tongue (11) to slide upward to unlock. When the first unlocking handle (4) or the third unlocking handle (6) is turned, the linkage shaft (3) rotates and drives the first detent (32) to push the unlocking block (13) and the locking tongue (11) to slide upward to unlock; when the second unlocking handle (5) or the fourth unlocking handle (7) is turned, the unlocking shaft (14) rotates and drives the second detent (142) to push the unlocking block (13) and the locking tongue (11) to slide upward to unlock; when the unlocking handle is not turned, the unlocking block (13) and the locking tongue (11) are locked under the action of the return spring (12).

2. The docking bed locking device as described in claim 1, characterized in that, The unlocking block (13) is provided with a first through hole (131) and a second through hole (132). The axes of the first through hole (131) and the second through hole (132) are perpendicular to each other and have a height difference. The linkage shaft (3) is installed in the first through hole (131) of the first main lock (1) and the second main lock (2), and the unlocking shaft (14) is installed in the second through hole (132). The inner height of the first through hole (131) is greater than the shaft diameter of the linkage shaft (3), so that the unlocking block (13) can move up and down relative to the linkage shaft (3). The inner height of the second through hole (132) is greater than the shaft diameter of the unlocking shaft (14), so that the unlocking block (13) can move up and down relative to the unlocking shaft (14).

3. The docking bed locking device as described in claim 1, characterized in that, The main lock structure also includes a lock box (15), in which the latch (11), return spring (12), unlocking block (13) and unlocking shaft (14) are housed. The lock box (15) has openings corresponding to the positions of the linkage shaft (3), unlocking shaft (14) and latch (11).

4. The docking bed locking device as described in claim 3, characterized in that, The unlocking block (13) is also provided with a groove (135), one end of the reset spring (12) is fixed to the inner top surface of the lock box (15), and the other end of the reset spring (12) is fixed in the groove (135).

5. The docking bed locking device as described in claim 3, characterized in that, The main lock structure also includes a bolt guide seat (16), on which a guide groove (161) is provided, and the bolt (11) slides in the guide groove (161).

6. The docking bed locking device as described in claim 1, characterized in that, The locking tongue (11) is fixedly installed on the unlocking block (13) by a pin.

7. The docking bed locking device as described in claim 1, characterized in that, It also includes a docking bed (17), on which the first main lock (1), the second main lock (2), the first unlocking handle (4), the second unlocking handle (5), the third unlocking handle (6) and the fourth unlocking handle (7) are all installed.

8. The docking bed locking device as described in claim 7, characterized in that, It also includes a bed support for use with the docking bed (17), the bed support having a locking stop (18), the locking stop (18) having inclined surfaces on both sides, and a locking hole in the middle of the locking stop (18) for use with the locking tongue (11).

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