TWI771204B - locking device - Google Patents

Abstract

A locking device, comprising a casing and an actuating body, a linkage frame and a sliding body mounted on the casing The combination. The actuating body has a free end and a pivot end that cooperates with the elastic device to pivot the housing, so that the actuating body can form a rocking motion; the free end of the actuating body is provided with two cantilever arms and an opening area located between the cantilever arms. The area is used to set the operation part. And, the linkage frame has a first end pivotally connected to the free end of the actuating body (or the operating portion) and a second end connected to the sliding body; when the operator presses the operating portion, the actuating body is allowed to move from a closed position to an open position, In addition, the linkage frame and the sliding body are driven to move, so as to improve the situation that the conventional structure limits the length/specification of the structure due to the configuration space/volume, which affects the convenience of operation.

Description

locking device

The present invention relates to a structure of a locking device; in particular, it refers to a technology that combines an operating portion with an actuating body to improve the conventional structure whose length/specification is limited by the space for configuration.

Use a locking device or similar device to be installed on the cover structure of computer/electronic equipment, server chassis, etc., to provide personnel to operate the opening/closing of computer/electronic equipment or control the cover structure to lock and close the chassis body to avoid It is a known art to expose the components or parts inside the chassis, or to open the operation cover structure, so that personnel can configure, maintain, etc. the internal components of the chassis.

For example, US 6174007 B1 "ACTUATOR ASSEMBLY", US 7201407 B2 "SLIDING PANEL LATCH", US 8256737 B2 "LEVERAGE DEVICE AND SYSTEM USING SAME", CN 110388148 A "Latching Device", CN 207829660 U "Latch and Include Latch" "Housing Assembly" (i.e., Taiwan No. 107207996 "Hood Latch"), CN 206685594 U "Latch and Housing Assembly Including the Latch" (i.e., Taiwan No. 106215877 "Hood Latch") patent cases, etc. , which provides typical examples.

This type of latching device usually includes a housing, an actuating handle and a sliding plate; one end of the housing is provided with a push button. The actuating handle has a pivoting end that cooperates with a spring and is pivotally connected to the other end of the housing; the other end of the actuating handle is pivotally connected to the connecting rod, and the other end of the actuating handle is provided with a protrusion to allow the protrusion to be embedded in the push button, form a locked state. When the person operates the button to release the protrusion, the spring pushes the actuating handle to open, drives the sliding plate to move, and the connecting rod supports the actuating handle.

A problem related to the structure and operation application of the combination type of the conventional latch device is that, in the inherent length or specification of the housing, the structure of the actuating handle and the push button is arranged at the same time, that is, the length of the actuating handle must be shortened, Relatively also affects the ease of operation of the actuating handle, which is not what we expected.

Typically, these references show skill in the design and application of structural combinations of latches or similar mechanisms; if redesign takes into account the structural form of the latch or the actuating handle, its construction differs from Those who are accustomed to it will be able to change its use form, which is different from the old method; in essence, it will also increase its application effect.

We have found that an ideal latch structure must be able to overcome or improve the issues discussed above, and should include the following design considerations:

1. Under the condition that the structure (or housing) has the same length or specification, the length of the actuating handle can be increased as much as possible, so that the length is greater than that of the conventional structure to improve the latching device (or the actuating handle). Ease of operation.

2. Further consideration is given to providing a structure in which the pressing operation structure can be directly combined with the actuating handle (or the actuating body), and can still achieve the pressing operation structure and actuation without affecting or shortening the length of the actuating handle. The function of the handle (or the actuating body) to move smoothly.

None of these topics are taught or specifically disclosed in the aforementioned references.

The main purpose of the present invention is to provide a locking device, which includes a casing and a combination of an actuating body, a linkage frame and a sliding body mounted on the casing. The actuating body has a free end and a pivot end that cooperates with the elastic device to pivot the housing, so that the actuating body can form a rocking motion; the free end of the actuating body is provided with two cantilever arms and an opening area located between the cantilever arms. The area is used to set the operation part. And, the linkage frame has a first end pivotally connected to the free end of the actuating body (or the operating portion) and a second end connected to the sliding body; when the operator presses the operating portion, the actuating body is allowed to move from a closed position to an open position, And drive the linkage frame and The movement of the sliding body improves the situation that the conventional structure limits the length/specification of the structure due to the configuration space/volume, which affects the convenience of operation.

According to the locking device of the present invention, the operation part includes a pressing end for operation and a combination end; the combination end is pivotally connected to the first end of the connecting frame, and the combination end is provided with a positioning part with a hook-like structure. Corresponding to the positioning portion, the sliding body is formed with a secondary positioning portion; when the actuating body is in the closed position (or the actuating body is closed on the housing), the positioning portion is allowed to combine the secondary positioning portion, so that the actuating body is buckled on the sliding body to form Fixed type.

10: Shell

11: Bottom wall

12: Sidewall

13: Main end wall

14: Secondary end wall

15: Chamber

16: long hole

17: Shaft hole

18: Notch

20: Actuator

21: Free end

22: Pivot end

23: Shaft joint

24: Recess

25: Cantilever

25a: Stopper

26: Open area

27, 37, 87: pin hole

28: Dimples

29: Restriction Department

30: Linkage frame

31: First End

32: Second End

33: Shaft joint

35: Recess

36: Locking hole

38: Through hole

39: Ring convex part

40: sliding body

41: Combination Department

42: Shaft hole

43: Master

44: Vice end

45: Sub-positioning part

50: Elasticizer

51, 54: first paragraph

52, 58: Second paragraph

53, 56: Rings

55: Spring

60: Lock Mechanism

61: Swivel

62: lock plate

63: Deputy Restriction Department

64: Base

65: Assembly Department

66: Wings

70: Shaft

73: Axle column

77: Axle pin

80: Operation Department

81: Pressing end

82: Combination end

84: Positioning Department

85: convex arm

86: Empty area

Figure 1 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 2 is a schematic exploded view of the structure of Fig. 1; it shows the structure of the casing, the actuating body, the linkage frame, the sliding body and the elastic device.

FIG. 3 is a schematic plan view of FIG. 1 .

Fig. 4 is a schematic cross-sectional structure diagram of Fig. 3; it shows the structural situation of the locking mechanism in the locked state.

Fig. 5 is a schematic plan view of the operation embodiment of Fig. 4; it depicts the structural situation of the locking mechanism in the unlocked state.

Fig. 6 is a schematic plan view of the structure of the present invention; it shows the structural situation in which the positioning part of the operation part is combined with the auxiliary positioning part of the sliding body, so that the actuating body is located in the closed position.

Fig. 7 is a schematic plan view of an operation embodiment of Fig. 6; it depicts the structural situation in which a person presses the operation part and the positioning part leaves the auxiliary positioning part.

Figure 8 is a schematic plan view of an operating embodiment of the present invention; it shows the structural situation in which the elastic device drives the actuating body to move in the upward direction or the open position, and drives the linkage frame and the sliding body to move.

Referring to Figures 1, 2 and 3, the locking device of the present invention includes a combination of a casing, an actuating body, a linking frame, and a sliding body, which are denoted by reference numbers 10, 20, 30, and 40, respectively. The casing 10 has a bottom wall 11 , two side walls 12 extending parallel to the axis of the casing 10 , a main end wall 13 and a secondary end wall 14 connecting the side walls 12 and perpendicular to the axis direction of the casing 10 , and jointly defining the casing 10 There is an open chamber 15 for accommodating the actuating body 20 , the linking frame 30 and the sliding body 40 . In addition, 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 gap 18 .

In the following description, it is assumed that the upper part, the upper part, the lower part, the lower part, the right part, the left part, the side edge, etc. are mentioned, and the directions shown in the drawings are taken as reference directions.

In the adopted embodiment, the actuating body 20 has a plate structure, and defines a free end 21 and a pivot end 22 that is pivotally connected to the housing 10 with the elastic device 50, so that the actuating body 20 can form a rocking motion.

In detail, the pivoting end 22 of the actuating body 20 is provided with a shaft connecting portion 23 and recessed portions 24 at both ends of the shaft connecting portion 23 ; the recessed portions 24 provide a space for accommodating the elastic device 50 . The elastic device 50 is in the form of a torsion spring, and has a ring portion 53 and a first segment 51 and a second segment 52 connecting the ring portion 53 . And, the shaft connecting portion 23 is combined with a shaft 70, and the shaft 70 is passed through the ring portion 53 of the elastic device 50 and the shaft hole 17 formed on the side wall 12 of the housing 10; The bottom wall 11 of the second section 52 abuts against the actuating body 20 (or the concave portion 24 ), so that the actuating body 20 forms a rocking motion.

The figure also depicts that the free end 21 of the actuating body 20 is provided with two (parallel) protruding cantilever arms 25 and an opening area 26 located between the two cantilever arms 25 . The cantilever 25 is formed with a blocking portion 25a; the tail portion of the cantilever 25 is provided with a pin hole 27. In addition, the opening area 26 is used for disposing the operation part 80 ; the blocking part 25 a can assist the operation part 80 to be located in the correct position after the operation part 80 is assembled in the opening area 26 of the actuating body 20 .

In the adopted embodiment, the operation 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 parallel convex arms 85, between the two convex arms 85 An empty area 86 is defined. The rear end of the protruding arm 85 forms a positioning portion 84 with a hook-like structure; The pin hole 87 and the pin hole 27 of the cantilever 25 are correspondingly pivotally connected to a shaft pin 77 , and the operating portion 80 forms a rocking motion.

Specifically, the pressing end 81 of the operating portion 80 faces the direction of the pivoting end 22 of the actuating body 20 , and the combining end 82 of the operating portion 80 is pivotally connected to the above-mentioned linkage frame 30 . The linkage frame 30 defines a first end 31 and a second end 32 ; the first end 31 is accommodated in the empty area 86 of the operating portion 80 . The first end 31 is provided with a pin hole 37 and a recess 35 that accommodates the spring 55 . Also, the spring 55 has a ring portion 56 and a first segment 54 and a second segment 58 connecting the ring portion 56 .

Figures 2 and 3 show that the above-mentioned shaft pin 77 also passes through the pin hole 37 of the first end 31 of the linkage frame 30 and the ring portion 56 of the spring 55; Above, the second section 58 of the spring 55 presses against the operating portion 80 (or the combination end 82 ).

That is to say, the first end 31 of the interlocking frame 30 forms the combined end 82 of the pivotal operation portion 80 and the free end 21 of the actuating body 20 .

In the adopted embodiment, the second end 32 of the linking frame 30 is provided with a shaft connecting portion 33 for pivotally connecting a shaft column 73 , so that the second end 32 of the linking frame 30 can be freely rotated. In addition, the shaft column 73 is combined with the shaft connection portion 33 of the link frame 30 , and also pivotally connects the sliding body 40 .

The figure depicts the sliding body 40 as a plate structure, which is installed on the housing 10 (or the chamber 15 ) to form a movable type. The sliding body 40 defines a primary end 43 and a secondary end 44 ; between the primary end 43 and the secondary end 44 , there is a combination part 41 with a convex plate structure and a shaft hole 42 formed on the combination part 41 .

Therefore, the shaft column 73 combines the shaft connection portion 33 of the link frame 30 and the shaft hole 42 of the combination portion 41 of the sliding body 40 ; When a person presses the operation part 80, the actuating body 20 is allowed to move from a closed position to an open position, so as to drive the linkage frame 30 to move, so that the shaft column 73 moves along the elongated hole 16, and drives the sliding body 40 to move; Knowing that the structure limits the length/size of the structure due to space/volume, which affects the convenience of operation.

The above-mentioned closed position refers to the position where the actuator 20 is folded in 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 .

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 actuating body 20 is in the closed position (or the actuating body 20 is closed on the housing 10 ), the positioning portion 84 is allowed to be combined with the secondary positioning portion 45 . The positioning portion 45 enables the actuating body 20 to be fastened on the sliding body 40 to form a fixed type.

Please refer to Figures 2 and 3, between the free end 21 and the pivot end 22 of the actuating body 20, there is a concave hole 28 and a restricting portion 29 formed on the concave hole 28, and the restricting portion 29 is a protruding plate structure; Also, the recess 28 is fitted with a locking mechanism 60 . The lock mechanism 60 includes a combination of a swivel 61 accommodated in the cavity 28 and a lock plate 62 pivoting the swivel 61 .

The figure depicts that the swivel body 61 is formed with a secondary restricting portion 63 and a base portion 64 in a protruding shaft structure; Moreover, after the lock mechanism 60 is installed in the concave hole 28, the base portion 64 (protruding) is allowed to pivotally connect with the assembly portion 65 of the lock plate 62; when the person operates the rotating body 61 to rotate, the restricting portion 29 of the actuating body 20 blocks the pair of The mechanism of the restricting portion 63 is used to regulate the rotation angle or rotation range of the swivel body 61 .

Corresponding to the structure of the locking mechanism 60 , between the first end 31 and the second end 32 of the interlocking frame 30 , there is a locking hole 36 for allowing the locking plate 62 (or the wing portion 66 ) to pass through. The locking hole 36 is formed by forming a ring convex portion 39 on a through hole 38 .

Please refer to FIG. 4 , when the lock mechanism 60 is in the locked state, the wings 66 are clamped on the locking hole 36 (or the ring protrusion 39 ), so that the actuating body 20 , the interlocking frame 30 and the sliding body 40 are closed and fixed on the casing The shape of the body 10 (or the chamber 15).

FIG. 5 depicts the structural situation in which a person rotates the swivel 61 to release the locked state of the wings 66 of the locking plate 62 and the locking hole 36 of the interlocking frame 30 to form an unlocked state.

FIG. 6 shows that the positioning part 84 of the operating part 80 is combined or fastened with the auxiliary positioning part 45 of the sliding body 40 , and the actuating body 20 , the interlocking frame 30 and the sliding body 40 are kept closed in the casing 10 (or the chamber 40 ) 15) type.

Referring to FIG. 7 , when a person presses the pressing end 81 of the operation part 80 , the positioning part 84 of the operation part 80 is separated from the auxiliary positioning part 45 of the sliding body 40 . Therefore, the elastic device 50 releases the accumulation energy, pushes the actuating body 20 to move toward the open position, and drives the linkage frame 30 to move; for example, the situation depicted in FIG. 8 .

The figure also shows that the actuating body 20 causes the second end 32 of the link frame 30 to drive the shaft column 73 to move along the elongated hole 16, and causes the sliding body 40 to slide on the main end wall 13 (or its notch 18), auxiliary movement between the end walls 14 (or their indentations 18).

In a feasible embodiment, when the actuating body 20 is closed in the casing 10 , a part of the main end 43 of the sliding body 40 protrudes from the notch 18 of the main end wall 13 of the casing 10 . When the actuating body 20 is in the open position, the secondary end 44 (or the secondary positioning portion 45 ) of the relatively driving sliding body 40 protrudes from the notch 18 of the secondary end wall 14 of the housing 10 .

Typically, this locking device has the following advantages over the old law:

1. The structure of the casing 10 , the actuating body 20 , the interlocking frame 30 , the sliding body 40 and related components have been redesigned for consideration. For example, the free end 21 of the actuating body 20 is provided with two cantilever arms 25 and an opening area 26, and the operating part 80 is assembled; the combined end 82 of the operating part 80 is provided with a convex arm 85, an empty area 86 and a positioning part 84, and the combined linkage frame 30 is the first The end 31, the concave part 35 and the spring 55 make the first section 54 of the spring abut against the linkage frame 30, and the second section 58 presses the operation part 80; the second end 32 of the linkage frame 30 is pivotally connected to the sliding body 40; the secondary end of the sliding body 40 44. A secondary positioning portion 45 is provided to fit the positioning portion 84 of the operating portion 80 to control the actuating body 20, the interlocking frame 30 and other components to be closed on the housing 10 or allow the actuating body 20 to drive the interlocking frame 30 and the sliding body 40 to move and other parts, It is obviously different from the accustomed users, and also changes the structure or combination relationship of the conventional latch device, so that its use and operation mode are different from the old law.

2. In particular, under the condition that the structure (or housing 10 ) has the same length or specification (or does not affect or shorten the length of the operating handle), the operating part 80 is directly combined with the structural type of the operating body 20, which is different. Due to the prior art (the actuating handle and the push button are respectively installed on the housing to occupy different spaces/lengths), the length of the actuating body 20 can be increased as much as possible, so that the length is greater than that of the conventional structure and the pressing The operation structure and the smooth movement of the actuating body 20, the linkage frame 30 and the sliding body 40 improve the situation that the conventional structure limits the length/specification of the structure due to the configuration space/volume and affects the convenience of operation.

Therefore, the present invention provides an effective locking device whose spatial pattern is different from that of the prior art, and has incomparable advantages in the old law. Requirement.

However, the above descriptions are only feasible embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention, that is, all equivalent changes and modifications made according to the scope of the patent application of the present invention are all covered by the patent scope of the present invention. .

10: Shell

11: Bottom wall

12: Sidewall

13: Main end wall

14: Secondary end wall

15: Chamber

16: long hole

17: Shaft hole

18: Notch

20: Actuator

21: Free end

22: Pivot end

23: Shaft joint

24: Recess

25: Cantilever

25a: Stopper

26: Open area

27, 37, 87: pin hole

28: Dimples

29: Restriction Department

30: Linkage frame

31: First End

32: Second End

33: Shaft joint

35: Recess

36: Locking hole

38: Through hole

39: Ring convex part

40: sliding body

41: Combination Department

42: Shaft hole

43: Master

44: Vice end

45: Sub-positioning part

50: Elasticizer

51, 54: first paragraph

52, 58: Second paragraph

53, 56: Rings

55: Spring

60: Lock Mechanism

61: Swivel

62: lock plate

63: Deputy Restriction Department

64: Base

65: Assembly Department

66: Wings

70: Shaft

73: Axle column

77: Axle pin

80: Operation Department

81: Pressing end

82: Combination end

84: Positioning Department

85: convex arm

86: Empty area

Claims (14)

A locking device, comprising a casing (10) and a combination of an actuating body (20), a linkage frame (30), and a sliding body (40) mounted on the casing (10); the actuating body (20) There is a free end (21) and a pivot end (22) with which the elastic device (50) is pivotally connected to the casing (10), so that the actuating body (20) can form a rocking motion; the actuating body (20) The free end (21) of the ) is provided with two cantilever arms (25) and an open area (26) located between the cantilever arms (25), the open area (26) is used to set the operation part (80) ; And the linkage frame (30) has a rotatable first end (31) and a second end (32) connected to the sliding body (40), and the first end (31) is pivotally connected to the actuating body At least one of the free end (21) of (20) and the operating portion (80); when a person presses the operating portion (80), the actuating body (20) is allowed to move from a closed position to a The open position moves to drive the linkage frame (30) and the sliding body (40) to move. The locking device according to claim 1, wherein the housing (10) has a bottom wall (11), two side walls (12) extending in a direction parallel to the axis of the housing (10), and connecting the side walls (12) And the main end wall (13) and the auxiliary end wall (14) perpendicular to the axis direction of the casing (10), and jointly define the casing (10) with an open cavity (15), to The actuating body (20), the interlocking frame (30) and the sliding body (40) are accommodated; the side wall (12) of the casing (10) is provided with an elongated hole (16), the The main end wall (13) and the auxiliary end wall (14) are respectively formed with a gap (18); the actuating body (20) has a plate structure, and the pivot end (22) of the actuating body (20) ) is provided with a shaft connecting portion (23) and concave portions (24) located at both ends of the shaft connecting portion (23), the concave portions (24) receiving the elastic device (50). The locking device according to claim 2, wherein the elastic device (50) is in the form of a torsion spring, and has a ring portion (53) and a first section (51) and a second section connecting the ring portion (53). (52); The shaft connecting portion (23) is combined with a shaft (70), and the shaft (70) is passed through the ring portion (53) of the elastic device (50) and formed on the side wall of the housing (10). The shaft hole (17) on (12) makes the first section (51) of the elastic device (50) abut against the bottom wall (11) of the housing (10), and the second section (52) ) against the recessed portion (24) of the actuating body (20); the cantilever (25) of the actuating body (20) is in the form of parallel to each other; the cantilever (25) is formed with a blocking portion ( 25a); the tail of the cantilever (25) is provided with a pin hole (27). The locking device according to claim 1 or 2 or 3, wherein the operating part (80) comprises 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), an empty area (86) is defined between the two protruding arms (85); the rear end of the protruding arm (85) forms a positioning portion (84) with a hook-like structure; The combination end (82) and the cantilever (25) are correspondingly pivoted to a shaft pin (77), so that the operation part (80) forms a rocking motion; the pressing end ( 81) In the direction of the pivot end (22) of the actuating body (20), the combined end (82) of the operating portion (80) is pivotally connected to the linkage frame (30); the linkage frame (30) The first end (31) of ) is accommodated at the position of the empty area (86) of the operating portion (80). The locking device according to claim 4, wherein the two protruding arms (85) of the operating portion (80) are in a parallel shape; the first end (31) of the linkage frame (30) is provided with a pin A hole (37) and a recess (35) for accommodating a spring (55); the spring (55) has a ring (56) and a first segment (54) and a second segment (58) connecting the ring (56) ); the shaft pin (77) passes through the pin hole (37) of the first end (31) of the linkage frame (30) and the ring portion (56) of the spring (55); The first segment (54) of the spring (55) abuts on the linkage frame (30), and the second segment (58) of the spring (55) presses the operating portion (80) The shape of the combined end (82) of the connecting frame (30) enables the first end (31) of the linkage frame (30) to pivotally connect the combined end (82) of the operating part (80) and the actuation The free end (21) of the body (20); the second end (32) of the linkage frame (30) is provided with a shaft connecting portion (33) for pivotally connecting a shaft column (73), so that the The second end (32) of the linking frame (30) forms a freely rotatable type; the shaft column (73) is also pivotally connected to the sliding body (40). As claimed in claim 1 or 2 or 3 of the locking device, wherein the sliding body (40) is a plate structure, defining a main end (43) and a secondary end (44) provided with a secondary positioning portion (45); in Between the main end (43) and the secondary end (44), a combination part (41) with a convex plate structure and a shaft hole (42) formed on the combination part (41) are arranged; a shaft column (73) Combine the linkage frame (30) and the combination part (41) of the shaft hole (42) of the sliding body (40); and pivot the two ends of the shaft column (73) to the shell body (10). The locking device according to claim 4, wherein the sliding body (40) is a plate structure, defining a primary end (43) and a secondary end (44) provided with a secondary positioning portion (45); Between the end (43) and the secondary end (44), there is a combination part (41) with a convex plate structure and a shaft hole (42) formed on the combination part (41); a shaft column (73) combining the linkage frame (30) and the combination part (41) of the shaft hole (42) of the sliding body (40); and pivoting the two ends of the shaft column (73) to the housing (10) ). The locking device according to claim 5, wherein the sliding body (40) is a plate structure, defining a primary end (43) and a secondary end (44) provided with a secondary positioning portion (45); Between the end (43) and the secondary end (44), a combination part (41) with a convex plate structure and a shaft hole (42) formed on the combination part (41) are arranged; the shaft column (41) 73) Combining the shaft connection portion (33) of the link frame (30) and the shaft hole (42) of the combination portion (41) of the sliding body (40); The casing (10) is pivotally connected. The locking device according to claim 1, 2 or 3, wherein the actuating body (20) is provided with a recess (28) between the free end (21) and the pivot end (22) and is formed in A restricting portion (29) on the recess (28), the restricting portion (29) is a protruding plate structure; and the recess (28) is equipped with a locking mechanism (60); the locking mechanism (60) comprising a combination of a swivel (61) accommodated in the cavity (28) and a locking plate (62) pivotally connected to the swivel (61); the swivel (61) is formed with a pair of A restricting portion (63) and a base portion (64) with a protruding shaft structure; the locking plate (62) has a hole-like structure assembling portion (65) and a wing portion (66) connecting the assembling portion (65) ; the base portion (64) is pivotally connected to the assembly portion (65) of the locking plate (62); the linkage frame (30) is at the first end (31) and the second end (32) ), a locking hole (36) is provided; the locking hole (36) is formed by cooperating with a through hole (38) to form a ring convex portion (39). The locking device of claim 4, wherein the actuating body (20) is provided with a recess (28) between the free end (21) and the pivoting end (22) and is formed in the recess (28) on the restricting portion (29), the restricting portion (29) has a protruding plate structure; the recess (28) is equipped with a locking mechanism (60); the locking mechanism (60) includes a A combination of a swivel (61) accommodated in the cavity (28) and a locking plate (62) pivotally connected to the swivel (61); the swivel (61) is formed with a secondary restricting portion (63) and a base (64) with a protruding shaft structure; the locking plate (62) has a hole-like structure assembly (65) and a wing (66) connecting the assembly (65); the base (65) 64) The assembling portion (65) of the locking plate (62) is pivotally connected; the linkage frame (30) is arranged between the first end (31) and the second end (32) There is a locking hole (36); the locking hole (36) is formed by matching a ring convex portion (39) on a through hole (38). The locking device according to claim 5, wherein the actuating body (20) is provided with a concave hole (28) between the free end (21) and the pivoting end (22) and is formed in the concave hole (28) the restriction part (29) on the upper part, the restriction part (29) has a protruding plate structure; The cavity (28) is equipped with a lock mechanism (60); the lock mechanism (60) comprises a swivel (61) accommodated in the cavity (28) and pivotally connected to the swivel (61). ) combination of the lock plate (62); the rotating body (61) is formed with a secondary restricting part (63) and a base (64) with a convex shaft structure; the lock plate (62) has a hole-shaped structure for assembly part (65) and a wing part (66) connecting the assembling part (65); the base part (64) is pivotally connected to the assembling part (65) of the locking plate (62); the link frame (30) A locking hole (36) is provided between the first end (31) and the second end (32); the locking hole (36) is matched with a through hole (38) A ring convex part (39) is formed. The locking device according to claim 6, wherein the actuating body (20) is provided with a concave hole (28) between the free end (21) and the pivoting end (22) and is formed in the concave hole (28) on the restricting portion (29), the restricting portion (29) has a protruding plate structure; the recess (28) is equipped with a locking mechanism (60); the locking mechanism (60) includes a A combination of a swivel (61) accommodated in the cavity (28) and a locking plate (62) pivotally connected to the swivel (61); the swivel (61) is formed with a secondary restricting portion (63) and a base (64) with a protruding shaft structure; the locking plate (62) has a hole-like structure assembly (65) and a wing (66) connecting the assembly (65); the base (65) 64) The assembling portion (65) of the locking plate (62) is pivotally connected; the linkage frame (30) is arranged between the first end (31) and the second end (32) There is a locking hole (36); the locking hole (36) is formed by matching a ring convex portion (39) on a through hole (38). The locking device according to claim 7, wherein the actuating body (20) is provided with a concave hole (28) between the free end (21) and the pivoting end (22) and is formed in the concave hole (28) on the restricting portion (29), the restricting portion (29) has a protruding plate structure; the recess (28) is equipped with a locking mechanism (60); the locking mechanism (60) includes a A combination of a swivel (61) accommodated in the cavity (28) and a locking plate (62) pivotally connected to the swivel (61); the swivel (61) is formed with a secondary restricting portion (63) and the base (64) of the protruding shaft structure; the locking plate (62) has The assembly part (65) of the hole-like structure and the wing part (66) connecting the assembly part (65); the base part (64) is pivotally connected to the assembly part (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 a A ring protrusion (39) is formed on the hole (38). The locking device according to claim 8, wherein the actuating body (20) is provided with a concave hole (28) between the free end (21) and the pivoting end (22) and is formed in the concave hole (28) on the restricting portion (29), the restricting portion (29) has a protruding plate structure; the recess (28) is equipped with a locking mechanism (60); the locking mechanism (60) includes a A combination of a swivel (61) accommodated in the cavity (28) and a locking plate (62) pivotally connected to the swivel (61); the swivel (61) is formed with a secondary restricting portion (63) and a base (64) with a protruding shaft structure; the locking plate (62) has a hole-like structure assembly (65) and a wing (66) connecting the assembly (65); the base (65) 64) The assembling portion (65) of the locking plate (62) is pivotally connected; the linkage frame (30) is arranged between the first end (31) and the second end (32) There is a locking hole (36); the locking hole (36) is formed by matching a ring convex portion (39) on a through hole (38).

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