Locking structure

Abstract

The utility model relates to a locking structure which comprises a locking assembly, two locking holes and two locking grooves, the locking assembly is arranged on one of a motor box and a transmission box, the two locking holes and the two locking grooves are arranged on the other one of the motor box and the transmission box, the locking assembly comprises a shifting part and two locking frames, and the shifting part is arranged on the shifting part. The locking frames are rotationally connected into the corresponding motor boxes or the transmission boxes, the shifting parts are used for driving the two locking frames to rotate, and the locking grooves communicate with the locking holes. The motor box and the transmission box can be inserted into the locking hole through the locking frame and then enter the locking groove to be crossed with the locking hole to be locked after being rotated, so that rapid connection of the motor box and the transmission box is achieved, and the disassembly and assembly efficiency is high. The number of the locking frames is two, the two locking frames are driven to rotate through the shifting part, it is guaranteed that the two sides of the motor box and the two sides of the transmission box are tightly connected and matched when the transmission box and the motor box are matched, the situation that one side is not tightly matched is avoided, and stable transmission of the output shaft is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of electric curtain accessories, in particular to a locking structure. Background Art

[0002] The transmission box and the motor in the existing electric curtain are detachably assembled, so that the motor or the transmission box can be replaced separately when the internal structure of the motor or the transmission box fails.

[0003] In the prior art, the above-mentioned problem is solved by a locking structure. When the motor box has a single output shaft, the locking structure can be arranged on the output shaft.

[0004] When the motor box has dual output shafts, a locking structure is provided on one of the output shafts so that after the motor box and the transmission box are matched, the other output shaft and the transmission box are not matched tightly, thus affecting the power transmission of the output shaft on that side. Utility Model Content

[0005] The technical problem to be solved by the utility model is that when the motor box has dual output shafts, a locking structure is arranged on one of the output shafts, so that after the motor box and the transmission box are matched, the other output shaft and the transmission box are not matched tightly, which affects the power transmission of the output shaft on this side.

[0006] The utility model solves the above technical problems through the following technical solutions: a locking structure, including a locking assembly, two locking holes and two locking grooves, the locking assembly is arranged in one of the motor box and the transmission box, the two locking holes and the two locking grooves are arranged in the other of the motor box and the transmission box, the locking assembly includes a toggle part and two locking frames, the locking frames are rotatably connected in the corresponding motor box or the transmission box, the toggle part is used to drive the two locking frames to rotate, the locking groove is connected to the locking hole, the locking frame passes through the locking hole, and enters the locking groove after rotation, forming an intersection with the locking hole.

[0007] Specifically, the locking assembly is arranged in the transmission box, the two locking holes and the two locking grooves are located in the motor box, and part of the locking frame is inserted into the locking holes and rotated to lock to the locking grooves.

[0008] Specifically, at least a portion of the locking frame extending out of the transmission box protrudes radially along the locking frame to form a locking convex plate, the locking hole includes at least a long end and a short end, the locking groove extends from the long end toward the short end, and the locking convex plate is cross-locked with the locking hole.

[0009] Specifically, the locking frame further comprises a rotating portion and a connecting portion protruding from the rotating portion, the rotating portion is rotatably connected to the transmission box, the connecting portion extends out of the transmission box, and the locking convex plate protrudes radially from the connecting portion.

[0010] Specifically, the toggle portion includes two toggle members, and each of the locking frames is detachably connected to one of the toggle members, and one end of the toggle member extends out of the transmission box.

[0011] Specifically, the toggle part includes a toggle member, a transmission structure is connected between the two locking frames, the two locking frames rotate in the same direction under the action of the transmission structure, one of the locking frames is detachably connected to the toggle member, and one end of the toggle member extends out of the transmission box.

[0012] Specifically, the transmission structure includes a first gear fixedly connected to the rotating part, and a second gear rotatably connected to the transmission box, and the second gear is meshed between the two first gears.

[0013] Specifically, the transmission structure includes a first connecting rod, and two ends of the first connecting rod are respectively hinged to the end surfaces of the two rotating parts close to the locking convex plate.

[0014] Specifically, a plug hole for inserting the toggle piece is provided on the side wall of the rotating part, a fixing column with a screw hole is provided on the end surface of the rotating part, the plug hole is connected to the screw hole, and a matching hole is provided on the toggle piece.

[0015] Specifically, the transmission box is provided with a corresponding number of avoidance gaps for the toggle member to pass through.

[0016] Specifically, the transmission box is provided with two transmission shafts, and the two transmission shafts are arranged in parallel; a through hole is opened on the locking frame, and the transmission shaft rotates and penetrates the corresponding locking frame, and the central axis of the transmission shaft coincides with the central axis of the corresponding locking frame.

[0017] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0018] The positive and progressive effect of the utility model is that the motor box and the transmission box can be inserted into the locking hole through the locking frame, and then rotated to enter the locking groove and cross the locking hole to form a lock, so as to achieve a quick connection between the motor box and the transmission box, and the disassembly and assembly efficiency is high. When the motor box has a double output shaft, the number of locking frames is two, and the two locking frames are driven to rotate by the toggle part to ensure that the two sides of the motor box and the transmission box are tightly connected and matched when the transmission box and the motor box are matched, and there will be no situation where one side is not tightly matched, so as to ensure that the output shafts on both sides are stably transmitted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Explosion diagram of a locking structure of the present utility model.

[0020] Figure 2 Structural diagram of the transmission box in the present utility model.

[0021] Figure 3 Structural diagram of the transmission structure in the present utility model using the first gear and the second gear.

[0022] Figure 4 Structural diagram of the present utility model after the locking convex plate and the locking hole are cross-locked.

[0023] Figure 5 Structural diagram of the locking bracket when the transmission structure in the present utility model uses the first gear and the second gear.

[0024] Figure 6 Structural diagram of the transmission box when the transmission structure in the present utility model uses the first gear and the second gear.

[0025] Figure 7 Structural diagram of one perspective of the transmission structure in the present utility model using the first connecting rod.

[0026] Figure 8 Structural diagram of the transmission box when the transmission structure in the present utility model uses the first connecting rod.

[0027] Figure 9 Structural diagram of another perspective of the transmission structure in the present utility model using the first connecting rod.

[0028] Figure 10 Top view of the transmission box in the present utility model.

[0029] Explanation of reference numerals: 1. Motor box; 2. Transmission box; 3. Locking hole; 4. Locking groove; 5. Locking bracket; 6. Locking convex plate; 7. Long end; 8. Short end; 9. Rotating part; 10. Connecting part; 11. Poking part; 12. Transmission structure; 13. First gear; 14. Second gear; 15. First connecting rod; 16. Avoidance notch; 17. Positioning groove; 18. Stopping rib; 19. Transmission shaft; 20. Mounting post; 21. Fixed post. Detailed implementation manners

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] It should be noted that in the claims and description of this patent, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] The utility model discloses a locking structure, such as Figures 1-10 As shown, it includes a locking assembly, two locking holes 3 and two locking grooves 4. The locking assembly is arranged in one of the motor box 1 and the transmission box 2, and the two locking holes 3 and the two locking grooves 4 are arranged in the other of the motor box 1 and the transmission box 2. The locking assembly includes a toggle portion and two locking frames 5. The locking frames 5 are rotatably connected in the corresponding motor box 1 or the transmission box 2. The toggle portion is used to drive the two locking frames 5 to rotate. The locking groove 4 is connected to the locking hole 3. The locking frame 5 passes through the locking hole 3 and enters the locking groove 4 after rotation to form an intersection with the locking hole 3.

[0033] The present application is applicable to locking the motor box 1 and the transmission box 2 when they are installed, or unlocking the motor box 1 and the transmission box 2 when they are disassembled, and is applicable when the motor box 1 is a dual-axis output shaft. The present application adopts two locking frames 5, which correspond to the two output shafts respectively, and are used to connect the motor box 1 and the transmission box 2 to ensure that both sides of the motor box 1 and the transmission box 2 are tightly connected. Preferably, both locking frames 5 can be rotatably connected in the transmission box 2, and both locking holes 3 are set in the motor box 1. Of course, both locking frames 5 can also be rotatably connected in the motor box 1, and both locking holes 3 are set in the transmission box 2. This can reduce the structural complexity of the motor box 1 and the transmission box 2.

[0034] The motor box 1 and the transmission box 2 can first enter the locking hole 3 through the locking frame 5 and then rotate into the locking groove 4, so that the locking frame 5 and the locking hole 3 are locked after being crossed, so as to realize the rapid locking of the motor box 1 and the transmission box 2, and the disassembly and assembly efficiency is high. The locking connection structure is simplified and the functional stability is high.

[0035] The toggle part is used to drive the locking frame 5 to rotate, and the installer can lock the two locking frames 5 by operating the toggle part, which is quick to operate. It is ensured that when the transmission box 2 and the motor box 1 are matched, both sides of the motor box 1 and the transmission box 2 are tightly connected and matched, and there will be no loose fit on one side, ensuring that the output shafts on both sides are stably transmitted.

[0036] Specifically, the locking assembly is arranged in the transmission box 2, two locking holes 4 and two locking grooves 4 are located in the motor box 1, and a part of the locking frame 5 is inserted into the locking hole 3 and rotated to lock to the locking groove 4 when the motor box 1 and the transmission box 2 are close to each other.

[0037] Preferably, the locking assembly is disposed in the transmission box 2, and the space of the transmission box 2 can be utilized for layout and assembly. The two locking holes 4 and the two locking grooves 4 are located in the motor box 1, which can reduce the structural complexity of the motor box 1.

[0038] Specifically, at least a portion of the locking frame 5 extending out of the transmission box 2 protrudes radially along the locking frame 5 to form a locking convex plate 6, the locking hole 3 includes at least a long end 7 and a short end 8, the locking groove 4 extends from the long end 7 to the short end 8, and the locking convex plate 6 is cross-locked with the locking hole 3.

[0039] The locking groove 4 is recessed relative to the hole wall of the locking hole 3 and the locking groove 4 extends from the long end 7 to the short end 8. The locking groove 4 is recessed from the hole wall of the locking hole 3 to form a curved space in communication with the hole and the groove. Preferably, the locking groove 4 intersects with the locking hole 3 to form a channel structure in the intersecting direction. The locking protrusion 6 is cross-locked with the locking hole 3 to achieve a rotational locking connection. Preferably, the center lines of the locking groove 4 and the locking hole 3 intersect vertically. In an optional embodiment, the locking groove 4 is a groove structure recessed from the hole wall of the locking hole 3. In another optional embodiment, the locking groove 4 is recessed from the hole wall of the locking hole 3 and is connected to the internal space of the motor box 1.

[0040] Preferably, the locking hole 3 is a non-circular hole, at least part of which is a non-circular structure. In the best embodiment, Figure 10As shown, the locking hole 3 is an elliptical locking hole 3. The aperture of the locking hole 3 decreases from the long end 7 to the adjacent short end 8. The long end 7 is the two ends of the long axis direction of the ellipse, and the short end 8 is the two ends of the short axis direction of the ellipse. The maximum edge contour distance of the long end 7 from the center of the locking hole 3 is greater than the maximum edge contour distance of the short end 8 from the center of the locking hole 3, so as to form a non-circular structure of part of the hole wall of the locking hole 3. Among them, the locking frame 5 is inserted into the locking hole 3 and rotates along the long end 7 to the short end 8 and is buckled in the locking groove 4. The locking frame 5 is rotatably connected to the transmission box 2, and the locking frame 5 and the locking hole 3 are plug-connected.

[0041] In one embodiment, a portion of the locking frame 5 extends out of the transmission case 2, and the locking frame 5 rotates after the locking convex plate 6 passes through the locking hole 3, so that the locking convex plate 6 is inverted in the locking groove 4. The locking convex plate 6 is tilted relative to the rotation center of the locking frame 5 to form an inverted structure. The locking convex plate 6 is inserted from the long end 7 of the locking hole 3 and then rotated into the locking groove 4 corresponding to the short end 8, thereby realizing an inverted locking connection, and the connection effect is good.

[0042] The locking frame 5 is provided with a rotation groove, and the transmission box 2 is a thin-walled structural member and is provided with a rotation hole. The locking frame 5 is squeezed and inserted into the rotation hole, and the wall of the transmission box 2 is at least partially sunk into the rotation groove to form a rotatable limited connection.

[0043] Specifically, the locking frame 5 further includes a rotating portion 9 and a connecting portion 10 protruding from the rotating portion 9 . The rotating portion 9 is rotatably connected to the transmission box 2 . The connecting portion 10 extends out of the transmission box 2 . The locking convex plate 6 protrudes radially along the connecting portion 10 .

[0044] A portion of the connecting portion 10 extends out of the transmission case 2, and the locking convex plate 6 protrudes radially from the connecting portion 10. The protruding length of the connecting portion 10 is adjusted based on the end face spacing between the locking groove 4 and the transmission case 2, and the locking force can be conveniently adjusted. The locking convex plate 6 is configured as a plurality of lateral protrusion structures that are evenly protruded relative to the center of the connecting portion 10. The rotation groove is provided on the rotating portion 9, thereby forming a rotatable limited connection. Preferably, the rotating portion 9 and the connecting portion 10 form a stepped column structure, and the rotating portion 9 is configured as a circular structure.

[0045] Specifically, the toggle portion includes two toggle members 11 , and each locking frame 5 is detachably connected to a toggle member 11 , and one end of the toggle member 11 extends out of the transmission box 2 .

[0046] Each locking frame 5 is detachably connected to a toggle member 11, one end of which extends out of the transmission box 2 for easy rotation by an operator. The toggle member 11 can be a rotating handle. After the motor box 1 and the transmission box 2 are pre-connected, the operator rotates the two rotating handles to make the two locking frames 5 cross with the two locking holes 3 respectively to complete the locking.

[0047] Specifically, the toggle part includes a toggle member 11, and a transmission structure is connected between the two locking frames 5. The two locking frames 5 rotate in the same direction under the action of the transmission structure. The toggle member 11 is detachably connected to one of the locking frames 5, and one end of the toggle member 11 extends out of the transmission box 2.

[0048] In order to ensure that the two locking frames 5 can rotate at the same time and reduce the number of operating steps, a transmission structure 12 is provided. Under the action of the transmission structure 12, the two locking frames 5 can rotate in the same direction, that is, the personnel only need to rotate a toggle member 11 to make the two locking frames 5 rotate forward or reverse at the same time, thereby completing the locking or unlocking of the motor box 1 and the transmission box 2. The transmission structure 12 can be a pulley with a belt structure, a connecting rod structure, a gear set structure, etc., and any transmission structure 12 that can achieve the same-direction rotation of the two locking frames 5 is applicable to this application.

[0049] The transmission box 2 is provided with a corresponding number of avoidance notches 16 for the toggle member 11 to pass through.

[0050] Preferably, the transmission box 2 is provided with an avoidance notch 16, and the toggle member 11 extends from the locking frame 5 along the avoidance notch 16 to the outside of the transmission box 2. The toggle member 11 is fixedly connected to the locking frame 5, thereby toggling the locking frame 5 to rotate to switch between the locked position and the unlocked position. The avoidance notch 16 runs through the transmission box 2 and is a long hole structure for the toggle member 11 to rotate and toggle. Optionally, the toggle member 11 and the locking frame 5 are fixedly connected by fasteners. The transmission box 2 is detachably provided with an upper cover. When the toggle member 11 needs to be removed, the toggle member 11 can be removed and replaced by removing the upper cover and then removing the fasteners.

[0051] Specifically, the transmission structure 12 includes a first gear 13 fixedly connected to the locking frame 5 , and a second gear 14 rotatably connected to the transmission box 2 . The second gear 14 is meshed between the two first gears 13 .

[0052] Transmission structure 12 such as Figure 3 , 5 6, specifically, a first gear 13 is fixedly connected to the rotating part 9, so that the rotating part 9 rotates while driving the first gear 13 to rotate, and the second gear 14 is meshed between the two first gears 13 to rotate the other first gear 13, so that the other rotating part 9 also rotates, and the two rotating parts 9 rotate in the same direction. A mounting column 20 is provided in the transmission box 2, and the mounting column 20 is used to install the second gear 14, so that the two first gears 13 rotate in the same direction, and the size of the second gear 14 is smaller than the first gear 13, so as to reduce the size of the transmission box 2. Of course, in order to make the transmission more stable, the number of the second gears 14 can be two, and the two second gears 14 are arranged on both sides of the center axis of the two first gears 13.

[0053] The first gear 13 can be configured as a missing gear. Since the rotating part 9 does not need to rotate one circle when rotating, the first gear 13 is configured as a missing gear, and an installation space is provided for a detachably connected toggle member.

[0054] Specifically, the transmission structure 12 includes a first connecting rod 15 , and two ends of the first connecting rod 15 are respectively hinged to the end surfaces of the two rotating parts 9 away from the locking convex plate 6 .

[0055] Transmission structure 12 such as Figure 7 , 8 As shown in FIG. 9 , a first connecting rod 15 is specifically used, and both ends of the first connecting rod 15 are respectively hinged on two rotating parts 9. The number of the first connecting rod 15 is preferably two. The two first connecting rods 15 and the two rotating parts 9 can form a parallelogram-like connecting rod structure, which can ensure the stability of the rotating part 9 when rotating.

[0056] Specifically, a plug hole for inserting the toggle member 11 is opened on the side wall of the rotating part 9, a fixing column 21 with a screw hole is provided on the end surface of the rotating part 9, the plug hole is connected to the screw hole, and a matching hole is provided on the toggle member 11.

[0057] In order to ensure that the rotating part 9 can be detachably connected to the toggle member 11, a socket is provided on the side wall of the rotating part 9, and the toggle member 11 is connected to the rotating part 9 through the socket, and a fixing member such as a screw is passed through the fixing column 21, so that the screw is installed on the toggle member 11. The toggle member 11 is provided with a matching hole, and the matching hole and the screw hole match, thereby completing the connection between the toggle member 11 and the rotating part 9. The transmission box 2 is detachably provided with an upper cover. When the toggle member 11 needs to be removed, the toggle member 11 can be removed and replaced by removing the upper cover and then removing the fasteners.

[0058] Specifically, the transmission box 2 is provided with two transmission shafts 19, and the two transmission shafts 19 are arranged in parallel; a through hole is opened on the locking frame 5, and the transmission shaft 19 rotates and inserts into the corresponding locking frame 5, and the central axis of the transmission shaft 19 coincides with the central axis of the corresponding locking frame 5.

[0059] Specifically, the outer peripheral wall of the locking frame 5 is provided with a positioning groove 17, and the transmission box 2 is provided with a stopping rib 18, which is located in the rotation direction of the positioning groove 17 and is used to limit the positioning groove 17 to be in the unlocking position or the locking position.

[0060] like Figures 5 to 6As shown, it is the rotation range and rotation angle of the positioning locking frame 5. Among them, the transmission box 2 and the locking frame 5 are provided with a positioning structure to position and limit the rotation angle, so as to avoid the change of the locking angle of the locking frame 5. In an embodiment, the elastic extrusion change is combined with the limiting stop rib 18 to cooperate with the positioning groove 17; when the positioning groove 17 rotates to the position of the stop rib 18, at least one of the positioning groove 17 or the stop rib 18 elastically deforms, so that the stop rib 18 crosses or snaps into the positioning groove 17, thereby realizing snap connection positioning, and thus positioning the relative positions of the locking frame 5 and the transmission box 2.

[0061] The stop rib 18 extends along the direction parallel to the axis of the rotation hole. The positioning groove 17 is arranged on the rotating surface of the rotating part 9. Further, the positioning groove 17 is a directional arc length groove recessed from the rotating surface, and the stop rib 18 is matched and limited in the positioning groove 17 to realize the regional limitation of the reciprocating rotation of the locking frame 5. Further preferably, positioning bumps are arranged at intervals in the positioning groove 17 to further limit the rotation position of the locking frame 5.

[0062] There are two transmission shafts 19 in the transmission box 2, and two output shafts are correspondingly arranged in the motor box 1. Preferably, two motor components are used to output two output shafts. The transmission shaft 19 passes through the through hole and the locking hole 3 and is inserted and matched with the output shaft in the motor box 1, and constitutes a power output structure. The transmission shaft 19 is rotationally connected to the locking frame 5, and has high rotational flexibility and assembly consistency. Specifically, the central axis of the transmission shaft 19 coincides with the central axis of the corresponding locking frame 5.

[0063] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common general knowledge or conventional technical means in the technical field not disclosed by the present invention. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0064] It should be understood that the present invention is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A locking structure, characterized in that: The invention comprises a locking assembly, two locking holes (3) and two locking grooves (4), wherein the locking assembly is arranged on one of a motor box (1) and a transmission box (2), and the two locking holes (3) and the two locking grooves (4) are arranged on the other of the motor box (1) and the transmission box (2). The locking assembly comprises a toggle portion and two locking frames (5), wherein the locking frames (5) are rotatably connected in the corresponding motor box (1) or the transmission box (2), and the toggle portion is used to drive the two locking frames (5) to rotate, wherein the locking grooves (4) are communicated with the locking holes (3), and the locking frames (5) pass through the locking holes (3) and enter the locking grooves (4) after rotation, thereby forming an intersection with the locking holes (3).

2. A locking structure according to claim 1, characterized in that: The locking assembly is arranged in the transmission box (2), the two locking holes (3) and the two locking grooves (4) are located in the motor box (1), and a portion of the locking frame (5) is inserted into the locking holes (3) and rotated to lock into the locking grooves (4).

3. A locking structure according to claim 2, characterized in that: At least a portion of the locking frame (5) extending out of the transmission box (2) protrudes radially from the locking frame (5) to form a locking convex plate (6); the locking hole (3) comprises at least one long end (7) and one short end (8); the locking groove (4) extends from the long end (7) toward the short end (8); and the locking convex plate (6) is cross-locked with the locking hole (3).

4. A locking structure according to claim 3, characterized in that: The locking frame (5) further comprises a rotating portion (9) and a connecting portion (10) protruding from the rotating portion (9); the rotating portion (9) is rotatably connected to the transmission box (2); the connecting portion (10) protrudes from the transmission box (2); and the locking convex plate (6) protrudes radially from the connecting portion (10).

5. A locking structure according to claim 2, characterized in that: The toggle portion comprises two toggle members (11), and each of the locking frames (5) is detachably connected to one of the toggle members (11), with one end of the toggle member (11) extending out of the transmission box (2).

6. A locking structure according to claim 4, characterized in that: The toggle portion comprises a toggle member (11), a transmission structure (12) is connected between the two locking frames (5), the two locking frames (5) rotate in the same direction under the action of the transmission structure (12), one of the locking frames (5) is detachably connected to the toggle member (11), and one end of the toggle member (11) is arranged to extend out of the transmission box (2).

7. A locking structure according to claim 6, characterized in that: The transmission structure (12) comprises a first gear (13) fixedly connected to the rotating part (9), and a second gear (14) rotatably connected to the transmission box (2), wherein the second gear (14) is meshed between the two first gears (13).

8. A locking structure according to claim 6, characterized in that: The transmission structure (12) comprises a first connecting rod (15), the two ends of which are respectively hinged to the end surfaces of the two rotating parts (9) away from the locking convex plate (6).

9. A locking structure according to any one of claims 5 to 8, characterized in that: The transmission box (2) is provided with a corresponding number of avoidance notches (16) for the toggle member (11) to pass through.

10. A locking structure according to claim 1, characterized in that: The transmission box (2) is provided with two transmission shafts (19), and the two transmission shafts (19) are arranged in parallel; a through hole is opened on the locking frame (5), and the transmission shaft (19) is rotatably inserted into the corresponding locking frame (5), and the central axis of the transmission shaft (19) coincides with the central axis of the corresponding locking frame (5).

Images