Locking device

Abstract

The present invention discloses a locking device, comprising a housing and an actuator, a linkage frame, and a sliding body mounted on the housing. The actuator has a free end and a pivotal end that cooperates with an elastic device to pivotally connect to the housing, so that the actuator forms a swinging motion; the free end of the actuator is provided with two cantilevers and an open area between the cantilevers, and the open area is used to set an operating portion. In addition, the linkage frame has a first end pivotally connected to the free end (or operating portion) of the actuator and a second end connected to the sliding body; when a person presses the operating portion, the actuator is allowed to move from a closed position to an open position, thereby driving the linkage frame and the sliding body to move, thereby improving the situation in which the existing structure is limited in length / specifications due to the configuration space / volume, affecting the convenience of operation.

Description

Technical Field

[0001] The present invention relates to the structure of a locking device; in particular, it relates to a technology for combining an operating portion with an actuating body to improve the length / specification of the existing structure limited by the configuration space. Background Art

[0002] It is known to the art to install a locking device or similar device on the cover structure of a computer / electronic device, server chassis, etc., to allow personnel to open / close the computer / electronic device, or to control the cover structure to lock and close the chassis body to prevent internal components or parts from being exposed, or to operate the cover structure to open so that personnel can configure, repair, etc. the internal components of the chassis.

[0003] For example, US 6174007 B1 "ACTUATOR ASSEMBLY", US 7201407 B2 "SLIDING PANELLATCH", US 8256737 B2 "LEVERAGE DEVICE AND SYSTEM USING SAME", CN 110388148 A "Latch device", CN 207829660 U "Latch and housing assembly including the latch" (i.e., Taiwan No. 107207996 "Shield Latch"), CN 206685594 U "Latch and housing assembly including the latch" (i.e., Taiwan No. 106215877 "Hood Latch") patents, etc., all provide typical embodiments.

[0004] This type of latch typically consists of a housing, an actuating handle, and a sliding plate. A push button is mounted on one end of the housing. The actuating handle has a pivotal end that engages a spring and is pivotally connected to the other end of the housing. The other end of the actuating handle is pivotally connected to a connecting rod, and a protrusion is provided on the other end of the actuating handle to allow the protrusion to engage the push button, creating a locked state. When a person presses the push button and releases the protrusion, the spring pushes the actuating handle open, causing the sliding plate to move and the connecting rod to prop up the actuating handle.

[0005] One of the structural and operational issues with conventional latch assembly configurations is that, in order to accommodate both the actuating handle and the push button within the inherent length or specifications of the housing, the actuating handle must be shortened, which in turn affects its operability. This is undesirable.

[0006] Representatively speaking, these references show the technical skills in structural combination design and application of latch devices or similar mechanisms; if the structural form of the latch device or the actuating handle is redesigned and its structure is different from that of conventional users, its usage form can be changed and different from the old method; in essence, its application effect will also be increased.

[0007] We have found that an ideal latching device structure must be able to overcome or improve the issues discussed above and should include the following design considerations:

[0008] 1. Under the condition that the structure (or housing) has the same length or specifications, the length of the actuating handle can be increased as much as possible, making it longer than the length of the existing structure, so as to improve the operating convenience of the latch device (or actuating handle).

[0009] 2. Further consideration is given to providing a structural form in which a pressing operation structure can be directly combined with an actuating handle (or an actuating body), and the pressing operation structure and the actuating handle (or an actuating body) can still achieve the effect of smooth movement without affecting or shortening the length of the actuating handle.

[0010] However, these topics are not taught or specifically disclosed in the above-mentioned references. Summary of the Invention

[0011] The object of the present invention is to provide a locking device, comprising a housing and an actuator mounted on the housing, a linkage frame, and a sliding body. The actuator has a free end and a pivotal end that cooperates with an elastic member to pivotally connect to the housing, so that the actuator forms a swinging motion; the free end of the actuator is provided with two cantilevers and an open area between the cantilevers, and the open area is used to set an operating portion. In addition, the linkage frame has a first end pivotally connected to the free end (or operating portion) of the actuator and a second end connected to the sliding body; when a person presses the operating portion, the actuator is allowed to move from a closed position to an open position, thereby driving the linkage frame and the sliding body to move, thereby improving the situation in which the existing structure is limited in length / specifications due to the configuration space / volume, affecting the convenience of operation.

[0012] According to the latch device of the present invention, the operating portion includes a pressing end and a combination end for operation; the combination end is pivotally connected to the first end of the linkage frame and is provided with a hook-shaped positioning portion. The sliding body is formed with a secondary positioning portion corresponding to the positioning portion. When the actuator is in the closed position (or the actuator is closed in the housing), the positioning portion allows the combination of the secondary positioning portion to engage the actuator with the sliding body, forming a fixed configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0014] Figure 2 yes Figure 1 Schematic diagram of the structural decomposition; showing the structure of the housing, actuator, linkage, sliding body and elastic device.

[0015] Figure 3 yes Figure 1Schematic diagram of the planar structure.

[0016] Figure 4 yes Figure 3 A cross-sectional structural diagram of the invention; showing the structural situation of the lock mechanism in the locked state.

[0017] Figure 5 yes Figure 4 A planar structural diagram of an operating embodiment of the present invention; depicting the structural situation of the lock mechanism in the unlocked state.

[0018] Figure 6 It is a planar structural diagram of the present invention; it shows the structural situation in which the positioning portion of the operating portion is combined with the auxiliary positioning portion of the sliding body to position the actuating body in the closed position.

[0019] Figure 7 yes Figure 6 A schematic plan view of the structure of an operation embodiment; depicts a structural situation in which a person presses the operating portion and the positioning portion leaves the auxiliary positioning portion.

[0020] Figure 8 It is a planar structural diagram of an operating embodiment of the present invention; it shows the structural situation in which the elastic device drives the actuator to move upward or to the open position, thereby driving the linkage frame and the sliding body to move.

[0021] Description of Reference Numerals

[0022] 10 shell

[0023] 11 bottom wall

[0024] 12 sidewalls

[0025] 13 Main end wall

[0026] 14 Auxiliary end wall

[0027] 15 chambers

[0028] 16 long holes

[0029] 17 shaft hole

[0030] 18 gaps

[0031] 20 Actuator

[0032] 21 Free End

[0033] 22 pivot end

[0034] 23 shaft connection

[0035] 24 recesses

[0036] 25 cantilever

[0037] 25a stopper

[0038] 26 opening area

[0039] 27, 37, 87 pin holes

[0040] 28 holes

[0041] 29 Restriction Department

[0042] 30 linkage frame

[0043] 31 First End

[0044] 32 Second end

[0045] 33 shaft connection

[0046] 35 recess

[0047] 36 locking holes

[0048] 38 through holes

[0049] 39 ring convex part

[0050] 40 sliding body

[0051] 41 Combination Department

[0052] 42 shaft hole

[0053] 43 master end

[0054] 44 secondary end

[0055] 45 positioning parts

[0056] 50 elastic device

[0057] 51, 54, first paragraph

[0058] 52, 58, second paragraph

[0059] 53, 56 ring

[0060] 55 spring

[0061] 60 locking mechanism

[0062] 61 turns

[0063] 62 lock plate

[0064] 63 Deputy Restriction Department

[0065] 64 base

[0066] 65 joints

[0067] 66 Wing

[0068] 70 axis

[0069] 73 axis column

[0070] 77 shaft pin

[0071] 80 Operation Department

[0072] 81 Pressing end

[0073] 82 combination terminal

[0074] 84 positioning unit

[0075] 85 convex arm

[0076] 86 empty area. DETAILED DESCRIPTION

[0077] See also Figure 1 、 2 3. The locking device of the present invention comprises a housing, an actuator, a linkage frame, and a sliding body, generally indicated by reference numerals 10, 20, 30, and 40, respectively. Housing 10 comprises a bottom wall 11, two side walls 12 extending parallel to the axis of housing 10, a primary end wall 13 and a secondary end wall 14 connected to side walls 12 and perpendicular to the axis of housing 10, thereby defining an open chamber 15 within housing 10 for accommodating actuator 20, linkage frame 30, and sliding body 40. Furthermore, side wall 12 of housing 10 is provided with an elongated hole 16, and primary end wall 13 and secondary end wall 14 each have a notch 18 formed therein.

[0078] In the following description, if the upper part, above, lower part, below, right side, left side, side, etc. are mentioned, the direction shown in the figure is used as a reference direction.

[0079] In the embodiment, the actuator 20 is a plate structure having a free end 21 and a pivot end 22 pivotally connected to the housing 10 by the elastic member 50, so that the actuator 20 can form a rocking motion.

[0080] Specifically, the pivot end 22 of the actuator 20 is provided with a pivot portion 23 and recesses 24 at either end of the pivot portion 23. The recesses 24 provide a space for accommodating the elastic element 50. The elastic element 50 is in the form of a torsion spring, comprising a ring portion 53, a first section 51, and a second section 52 connecting the ring portion 53. Furthermore, the pivot portion 23 is coupled to a shaft 70, which is inserted through the ring portion 53 of the elastic element 50 and the shaft hole 17 formed in the side wall 12 of the housing 10. The first section 51 of the elastic element 50 abuts against the bottom wall 11 of the housing 10, while the second section 52 abuts against the actuator 20 (or the recesses 24), causing the actuator 20 to exhibit a rocking (or oscillating) motion.

[0081] The figure also depicts two (parallel) protruding cantilevers 25 and an opening 26 between the two cantilevers 25, formed on the free end 21 of the actuator 20. The cantilevers 25 are formed with stoppers 25a; the tail ends of the cantilevers 25 are provided with pin holes 27. Furthermore, the opening 26 is used to accommodate the operating portion 80; the stoppers 25a help the operating portion 80 to be positioned correctly after being assembled into the opening 26 of the actuator 20.

[0082] In the embodiment shown, the operating portion 80 comprises a pressing end 81 for operation and a coupling end 82. The coupling end 82 is provided with a pin hole 87 and two parallel protruding arms 85, defining a space 86 between the protruding arms 85. The ends of the protruding arms 85 form a hook-shaped positioning portion 84. Furthermore, the pin hole 87 of the coupling end 82 and the pin hole 27 of the cantilever 25 are pivotally connected to a corresponding axle pin 77, allowing the operating portion 80 to swing.

[0083] Specifically, the pressing end 81 of the operating portion 80 faces the pivot end 22 of the actuator 20, and the assembly end 82 of the operating portion 80 is pivotally connected to the linkage frame 30. The linkage frame 30 defines a first end 31 and a second end 32; the first end 31 is received in the recess 86 of the operating portion 80. The first end 31 is provided with a pin hole 37 and a recess 35 for accommodating the spring 55. The spring 55 also includes a ring portion 56, a first section 54 connecting the ring portion 56, and a second section 58.

[0084] Figure 2 、 3 The above-mentioned shaft pin 77 is revealed to also be inserted into the pin hole 37 of the first end 31 of the linkage frame 30 and the ring portion 56 of the spring 55; and the first section 54 of the spring 55 is pressed against the linkage frame 30, and the second section 58 of the spring 55 is pressed against the operating portion 80 (or the combined end 82).

[0085] In other words, the first end 31 of the linkage frame 30 forms a rotatable pivotal connection between the combined end 82 of the operating portion 80 and the free end 21 of the actuating body 20 .

[0086] In the embodiment, the second end 32 of the linkage frame 30 is provided with a pivotal connection 33 for pivotally connecting to a shaft column 73, allowing the second end 32 of the linkage frame 30 to rotate freely. Furthermore, the shaft column 73, in conjunction with the pivotal connection 33 of the linkage frame 30, is also pivotally connected to the slider 40.

[0087] The figure depicts a sliding body 40 in the form of a plate structure, mounted on the housing 10 (or chamber 15) to provide free movement. The sliding body 40 is defined by a main end 43 and a secondary end 44. Between the main end 43 and the secondary end 44, a convex plate-shaped assembly portion 41 and an axial hole 42 are disposed.

[0088] Thus, the shaft column 73 connects the connecting portion 33 of the linkage frame 30 and the connecting portion 41 of the sliding body 40 with the shaft hole 42. Furthermore, the shaft column 73 (at both ends) is pivotally connected to the elongated hole 16 of the housing 10. When a person presses the operating portion 80, the actuator 20 is allowed to move from a closed position to an open position, thereby driving the linkage frame 30 to move, causing the shaft column 73 to move along the elongated hole 16, and thus driving the sliding body 40 to move. This improves the existing structure, which is limited in length and specifications due to space and volume, thus affecting operational convenience.

[0089] The closed position refers to the position where the actuator 20 is retracted into the housing 10 (or the chamber 15 ); the open position refers to the position where the actuator 20 (or the free end 21 ) moves away from the housing 10 .

[0090] Corresponding to the positioning portion 84 of the operating portion 80, the secondary end 44 of the sliding body 40 is provided with a secondary positioning portion 45; when the actuator 20 is in the closed position (or the actuator 20 is closed in the shell 10), the positioning portion 84 is allowed to combine with the secondary positioning portion 45, so that the actuator 20 is buckled on the sliding body 40 to form a fixed shape.

[0091] Please refer to Figure 2 、 3 The actuator 20 has a recess 28 and a restricting portion 29 formed on the recess 28 between the free end 21 and the pivot end 22. The restricting portion 29 is a protruding plate structure. Furthermore, the recess 28 is equipped with a locking mechanism 60. The locking mechanism 60 comprises a swivel 61 received in the recess 28 and a locking plate 62 pivotally connected to the swivel 61.

[0092] The figure depicts a swivel 61 formed with a secondary restricting portion 63 and a base portion 64 in a convex shaft configuration; and a lock plate 62 having a connecting portion 65 in a hole-like configuration and a wing portion 66 connecting the connecting portion 65. Furthermore, after the lock mechanism 60 is installed in the recess 28, the base portion 64 (protruding) is allowed to pivotally connect to the connecting portion 65 of the lock plate 62. When a person operates the swivel 61, the restricting portion 29 of the actuator 20 blocks the secondary restricting portion 63, thereby regulating the rotation angle or range of the swivel 61.

[0093] Corresponding to the structure of the lock mechanism 60, the linkage frame 30 is provided with a locking hole 36 between the first end 31 and the second end 32 to allow the locking plate 62 (or wing 66) to pass through. The locking hole 36 is formed by a ring protrusion 39 formed on a through hole 38.

[0094] See also Figure 4 When the lock mechanism 60 is in the locked state, the wing portion 66 is clamped on the locking hole 36 (or the annular protrusion 39), so that the actuator 20, the linkage frame 30 and the sliding body 40 are closed and fixed to the housing 10 (or the chamber 15).

[0095] Figure 5 The figure depicts a structural situation in which a person rotates the swivel 61 to release the locked state of the wing portion 66 of the lock plate 62 and the locking hole 36 of the linkage frame 30 to form an unlocked state.

[0096] Figure 6 The diagram shows that the positioning portion 84 of the operating portion 80 is coupled or engaged with the auxiliary positioning portion 45 of the sliding body 40 , thereby keeping the actuator 20 , the linkage frame 30 and the sliding body 40 closed in the housing 10 (or the chamber 15 ).

[0097] Please refer to Figure 7 When a person presses the pressing end 81 of the operating portion 80, the positioning portion 84 of the operating portion 80 will leave the auxiliary positioning portion 45 of the sliding body 40. Therefore, the elastic member 50 releases the stored energy, pushing the actuator 20 toward the open position, thereby driving the linkage frame 30 to move; for example, Figure 8 The situation described.

[0098] The figure also shows that the actuator 20 causes the second end 32 of the linkage 30 to drive the shaft column 73 to move along the elongated hole 16, and causes the sliding body 40 to move between the main end wall 13 (or its notch 18) and the secondary end wall 14 (or its notch 18) of the housing 10.

[0099] In one embodiment, when the actuator 20 is closed within the housing 10, a portion of the main end 43 of the slider 40 protrudes beyond the notch 18 of the main end wall 13 of the housing 10. When the actuator 20 is in the open position, the secondary end 44 (or secondary positioning portion 45) of the slider 40 protrudes from the notch 18 of the secondary end wall 14 of the housing 10.

[0100] Typically, this locking device has the following advantages over the old method:

[0101] 1. The housing 10, actuator 20, linkage frame 30, slide 40 and related component structures have been redesigned and considered. For example, the free end 21 of the actuator 20 is provided with two cantilevers 25 and an opening area 26, which are equipped with the operating part 80; the pivot end 82 of the operating part 80 is provided with a protruding arm 85, an empty area 86 and a positioning part 84, and the first end 31, the recess 35 and the spring 55 of the linkage frame 30 are combined, so that the first section 54 of the spring abuts against the linkage frame 30, and the second section 58 presses against the operating part 80; the second end 32 of the linkage frame 30 is pivotally connected to the sliding body 40; the secondary end 44 of the sliding body 40 is provided with a secondary positioning part 45, which is engaged with the positioning part 84 of the operating part 80 to control the actuator 20, the linkage frame 30 and other components to be closed to the housing 10 or allow the actuator 20 to drive the linkage frame 30, the sliding body 40 and other parts to move, which is obviously different from the conventional users, and also changes the structure or combination relationship of the existing latch device, so that its use and operation form are different from the old method.

[0102] 2. In particular, under the condition that the structure (or shell 10) has the same length or specification (or without affecting or shortening the length of the actuating handle), the operating part 80 is directly combined with the structural form of the actuator 20, which is different from the existing technology (the actuating handle and the press button are respectively installed on the shell and occupy different spaces / lengths). The length of the actuating body 20 can be increased as much as possible, making its length greater than the length of the existing structure and the pressing operation structure and the actuating body 20, the linkage frame 30, and the sliding body 40 move smoothly; it improves the situation in which the existing structure is limited in length / specifications due to the configuration space / volume, affecting the convenience of operation.

[0103] Therefore, the present invention provides an effective locking device, the spatial form of which is different from the existing structure and has advantages that cannot be matched by the existing structure.

Claims

1. A locking device, characterized in that: It comprises a housing (10), an actuating body (20) mounted on the housing (10), a linkage frame (30), and a sliding body (40); The actuating body (20) has a free end (21) and a pivot end (22) that cooperates with the elastic device (50) to pivotally connect the housing (10), so that the actuating body (20) forms a swinging motion. The free end (21) of the actuator (20) is provided with two cantilevers (25) and an opening area (26) located between the cantilevers (25), wherein the opening area (26) is used to set the operating part (80); and The linkage frame (30) has a first end (31) that can rotate freely and a second end (32) connected to the sliding body (40). The first end (31) is pivotally connected to at least one of the free end (21) of the actuating body (20) and the operating part (80); the operating part (80) includes a pressing end (81) for operation and a combination end (82); the combination end (82) is provided with a pin hole (87) and two protruding arms (85), and a space (86) is defined between the two protruding arms (85); the tail end of the protruding arm (85) forms a positioning portion (84) with a hook-shaped structure; the combination end (82), The cantilever (25) is pivotally connected to a corresponding shaft pin (77), so that the operating part (80) forms a swinging motion; the pressing end (81) of the operating part (80) faces the direction of the pivoting end (22) of the actuating body (20), and the combined end (82) of the operating part (80) is pivotally connected to the linkage frame (30); the first end (31) of the linkage frame (30) is accommodated in the empty space (86) of the operating part (80); when a person presses the operating part (80), the actuating body (20) is allowed to move from a closed position to an open position, thereby driving the linkage frame (30) and the sliding body (40) to move.

2. The locking device according to claim 1, wherein: The housing (10) comprises a bottom wall (11), two side walls (12) extending in a direction parallel to the axis of the housing (10), a main end wall (13) and a secondary end wall (14) connected to the side walls (12) and perpendicular to the axis of the housing (10), and jointly defining an open chamber (15) of the housing (10) for accommodating the actuator (20), the linkage frame (30), and the sliding body (40); The side wall (12) of the housing (10) is provided with an elongated hole (16), and the main end wall (13) and the auxiliary end wall (14) are respectively formed with a notch (18); The actuating body (20) is a plate structure. The pivot end (22) of the actuating body (20) is provided with an axial connection portion (23) and recesses (24) located at both ends of the axial connection portion (23). The recesses (24) accommodate the elastic device (50).

3. The locking device according to claim 2, wherein: The elastic member (50) is in the form of a torsion spring and comprises a ring portion (53) and a first section (51) and a second section (52) connected to the ring portion (53); The shaft connection portion (23) is combined with a shaft (70), and the shaft (70) is inserted into the ring portion (53) of the elastic device (50) and the shaft hole (17) formed on the side wall (12) of the housing (10), so that the first section (51) of the elastic device (50) abuts against the bottom wall (11) of the housing (10), and the second section (52) abuts against the recess (24) of the actuator (20); The cantilevers (25) of the actuator (20) are parallel to each other; the cantilevers (25) are formed with a stopper (25a); and the tail of the cantilever (25) is provided with a pin hole (27).

4. The locking device according to claim 1, 2 or 3, characterized in that: The two protruding arms (85) of the operating portion (80) are in parallel configuration; The first end (31) of the linkage frame (30) is provided with a pin hole (37) and a recess (35) for accommodating a spring (55); The spring (55) comprises a ring portion (56) and a first section (54) and a second section (58) connected to the ring portion (56); The shaft pin (77) is inserted into the pin hole (37) of the first end (31) of the linkage frame (30) and the ring portion (56) of the spring (55); and the first section (54) of the spring (55) is pressed against the linkage frame (30), and the second section (58) of the spring (55) is pressed against the combined end (82) of the operating portion (80), so that the first end (31) of the linkage frame (30) is pivotally connected to the combined end (82) of the operating portion (80) and the free end (21) of the actuator (20); The second end (32) of the linkage frame (30) is provided with a shaft connection portion (33) for pivotally connecting a shaft column (73) so that the second end (32) of the linkage frame (30) forms a freely rotatable shape; the shaft column (73) is also pivotally connected to the sliding body (40).

5. The locking device according to claim 1, 2 or 3, characterized in that: The sliding body (40) is a plate structure, and is defined by a main end (43) and a secondary end (44) provided with a secondary positioning portion (45); A combined portion (41) having a convex plate structure and an axial hole (42) formed on the combined portion (41) are provided between the main end (43) and the auxiliary end (44); A shaft column (73) combines the linkage frame (30) and the shaft hole (42) of the combination portion (41) of the sliding body (40); and both ends of the shaft column (73) are pivotally connected to the housing (10).

6. The locking device according to claim 4, wherein: The sliding body (40) is a plate structure, and is defined by a main end (43) and a secondary end (44) provided with a secondary positioning portion (45); and A combined portion (41) having a convex plate structure and an axial hole (42) formed on the combined portion (41) are provided between the main end (43) and the auxiliary end (44); A shaft column (73) combines the linkage frame (30) and the shaft hole (42) of the combination portion (41) of the sliding body (40); and both ends of the shaft column (73) are pivotally connected to the housing (10).

7. The locking device according to claim 1, 2 or 3, characterized in that: The actuating body (20) is provided with a recess (28) and a limiting portion (29) formed on the recess (28) between the free end (21) and the pivot end (22), and the limiting portion (29) is a protruding plate structure; and The recess (28) is equipped with a locking mechanism (60); the locking mechanism (60) comprises a combination of a rotating body (61) received in the recess (28) and a locking plate (62) pivotally connected to the rotating body (61); The swivel (61) is formed with a secondary limiting portion (63) and a base portion (64) in a convex shaft structure; the lock plate (62) has a connecting portion (65) in a hole-shaped structure and a wing portion (66) connected to the connecting portion (65); the base portion (64) is pivotally connected to the connecting portion (65) of the lock plate (62); The linkage frame (30) is provided with a locking hole (36) between the first end (31) and the second end (32); the locking hole (36) is formed by cooperating with a ring convex portion (39) formed on a through hole (38).

8. The locking device according to claim 4, wherein: The actuating body (20) is provided with a recess (28) and a limiting portion (29) formed on the recess (28) between the free end (21) and the pivot end (22), wherein the limiting portion (29) is a protruding plate structure; The recess (28) is equipped with a lock mechanism (60); the lock mechanism (60) includes a combination of a rotating body (61) accommodated in the recess (28) and a lock plate (62) pivotally connected to the rotating body (61); the rotating body (61) is formed with a secondary limiting portion (63) and a base portion (64) in a convex shaft structure; the lock plate (62) has a connecting portion (65) in a hole-shaped structure and a wing portion (66) connected to the connecting portion (65); the base portion (64) is pivotally connected to the connecting portion (65) of the lock plate (62); The linkage frame (30) is provided with a locking hole (36) between the first end (31) and the second end (32); the locking hole (36) is formed by cooperating with a ring convex portion (39) formed on a through hole (38).

9. The locking device according to claim 5, wherein: The actuating body (20) is provided with a recess (28) and a limiting portion (29) formed on the recess (28) between the free end (21) and the pivot end (22), wherein the limiting portion (29) is a protruding plate structure; The recess (28) is equipped with a lock mechanism (60); the lock mechanism (60) includes a combination of a rotating body (61) accommodated in the recess (28) and a lock plate (62) pivotally connected to the rotating body (61); the rotating body (61) is formed with a secondary limiting portion (63) and a base portion (64) in a convex shaft structure; the lock plate (62) has a connecting portion (65) in a hole-shaped structure and a wing portion (66) connected to the connecting portion (65); the base portion (64) is pivotally connected to the connecting portion (65) of the lock plate (62); A locking hole (36) is provided between the first end (31) and the second end (32) of the linkage frame (30); the locking hole (36) is formed by cooperating with a ring convex portion (39) formed on a through hole (38).

10. The locking device according to claim 6, wherein: The actuating body (20) is provided with a recess (28) and a limiting portion (29) formed on the recess (28) between the free end (21) and the pivot end (22), wherein the limiting portion (29) is a protruding plate structure; The recess (28) is equipped with a lock mechanism (60); the lock mechanism (60) includes a combination of a rotating body (61) accommodated in the recess (28) and a lock plate (62) pivotally connected to the rotating body (61); the rotating body (61) is formed with a secondary limiting portion (63) and a base portion (64) in a convex shaft structure; the lock plate (62) has a connecting portion (65) in a hole-shaped structure and a wing portion (66) connected to the connecting portion (65); the base portion (64) is pivotally connected to the connecting portion (65) of the lock plate (62); The linkage frame (30) is provided with a locking hole (36) between the first end (31) and the second end (32); the locking hole (36) is formed by cooperating with a ring convex portion (39) formed on a through hole (38).

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