Knob type suitcase combination lock

Abstract

The present application relates to the technical field of luggage lock, in particular to a knob type luggage combination lock, comprising a lock shell, a lock body assembly installed on the lock shell and a buckling assembly for locking the opening and closing side of the peripheral luggage, a linkage movably installed in the lock shell is arranged between the lock body assembly and the buckling assembly, the lock body assembly comprises a screw rod body rotatably installed on the lock shell within a preset range, the linkage and the screw rod body are in spiral transmission with each other, the outside of the screw rod body is provided with a knob, and the knob and the screw rod body can rotate together. Compared with the prior art, the spiral transmission between the screw rod body and the linkage is adopted, the use experience is good, and the transmission is more compact and stable. The lock catch seat of the buckling assembly is provided with a clamping part, in the unlocked state, the lock catch seat slides to the unlocked position, the second lock hook is separated from the first lock hook, the clamping part is clamped with the lock shell to fix the lock catch seat at the unlocked position, at this time, the second lock hook can be freely inserted and pulled out of the lock catch seat, and the situation that the second lock hook cannot be inserted due to obstruction does not occur.

Description

Technical Field

[0001] This invention relates to the field of luggage lock technology, specifically to a rotary combination lock for luggage. Background Technology

[0002] A combination lock is a type of lock that is opened with a combination code. Due to its convenience, it has been used in various industries, including luggage. Combination locks used for luggage are generally called luggage locks.

[0003] Most existing combination locks for bags release the zipper or latch by pushing a knob to move a hook. Since the knob usually moves linearly, the combination lock needs to allow space for the knob's movement, which increases the overall size and installation space required, thus increasing the cost. For example, Chinese patent document CN219491999U discloses a central locking lock, which includes a combination mechanism, a locking assembly fixed to one opening side of the bag, and a latch hinged to the other opening side of the bag. The two locking assemblies and the corresponding latches are located on both sides of the length of the combination mechanism. The locking assembly is equipped with a latch, which locks with the latch. A transmission component is provided between each locking assembly and the combination mechanism, and the latch is fixed to the transmission component. The combination mechanism includes a combination wheel assembly, a floating plate, and two sets of push knobs arranged on both sides of the combination wheel assembly. These push knobs and transmission components are interconnected. When the combination is correct, the floating plate floats to release the push knobs, causing the two sets of push knobs to move closer together, thus driving the transmission components and the bolt to slide, thereby releasing the lock and unlocking it. Compared to existing technologies, this design is simpler, and the sliding mechanism of the transmission components and bolt makes the structure more stable, provides higher security, and extends the lock's lifespan.

[0004] For example, Chinese patent document CN111155849A discloses a central locking mechanism, including a housing, a movable block installed inside the housing, an unlocking component that can move the movable block, a locking component that can restrict the movement of the movable block, a locking mechanism that can move the locking component and release the locking component from restricting the movable block, and a locking hook that connects the two ends of the movable block and locks them to the lock respectively. The toggle part of the unlocking component is easy to manually pull up or press down, and the locking part is connected to the toggle part. When pulling up or pressing down, the connection point between the toggle part and the locking part is used as the hinge point to hinge with the housing. The locking part then moves the movable block to unlock. The unlocking component makes the operation more effortless and convenient.

[0005] Later, rotary knob switches appeared, which unlocked and locked the bag lock by turning the knob in a manner similar to twisting a bottle cap, causing the internal structure to move linearly. This type of knob required the user to use two or more fingers to operate, which was somewhat inconvenient, and the transmission structure was relatively complex, limiting the manufacturing cost of the bag lock.

[0006] In addition, as can be seen from the above, existing central locking systems generally include a lock housing, a lock body assembly installed on the lock housing, and a latching assembly for locking the opening and closing sides of the outer bag. There is a linkage component that is movably installed in the lock housing between the lock body assembly and the latching assembly. After the correct command (password, key, or electronic smart unlocking) is entered into the lock body assembly, the latching assembly can be driven by the linkage component to release the lock on both opening and closing sides of the bag.

[0007] The fastening assembly includes a first locking hook installed on one opening side of the bag and a second locking hook installed on the other opening side. A linkage mechanism can move the first locking hook to achieve the engagement and disengagement of the first and second locking hooks. Currently, in the central locking system used by the applicant, the first locking hook needs to remain in the unlocked position after unlocking, and can only be moved to the locked position after the second locking hook is inserted. Existing fastening assemblies cannot meet this requirement. Summary of the Invention

[0008] To address the aforementioned technical problems in existing technologies, this invention provides a rotary combination lock for bags.

[0009] To achieve the above objectives, the present invention provides the following technical solution: A rotary combination lock for bags is provided, including a lock shell, a lock body assembly installed on the lock shell, and a latching assembly for locking the outer opening and closing sides of the bag. A linkage member is provided between the lock body assembly and the latching assembly and is movably installed in the lock shell. After the correct command is input into the lock body assembly, the latching assembly can be driven by the linkage member to release the lock on the two opening and closing sides of the bag. The lock body assembly includes a screw body that can be rotatably installed on the lock shell within a preset range. The linkage member and the screw body are helically driven to each other. A knob is provided on the outside of the screw body. The knob and the screw body can rotate together to drive the linkage member to move to the unlocking position or the locking position. The fastening assembly includes a latch seat slidably installed inside the lock housing. The latch seat is connected to a linkage component. The latch seat is provided with a first latch hook. The fastening assembly also includes a second latch hook, which can be inserted into the latch seat to engage with the first latch hook. The latch seat is provided with a locking component. In the unlocked state, the latch seat slides to the unlocked position, the second latch hook separates from the first latch hook, and the locking component locks into the lock housing to fix the latch seat in the unlocked position. When the second latch hook is inserted into the latch seat, it can drive the locking component to move and release the limit between it and the lock housing, thereby allowing the latch seat to move to the locked position.

[0010] As a further alternative, a rotating base is provided inside the lock housing, and nested annular protrusions are provided between the rotating base and the two ends of the screw body, so that the two ends of the screw body can be rotatably mounted on different rotating bases.

[0011] As a further alternative, the outer side of the screw body is integrally formed with a threaded groove, and the linkage is plate-shaped and slidably installed in the lock housing. The linkage is provided with several oblique protrusions that adapt to the threaded groove, so that the screw body rotates and drives the linkage to slide linearly.

[0012] As a further alternative, the knob is fixedly connected to the screw body, and the inner wall of the knob is arc-shaped and surrounds the screw body, with the knob exposed outside the lock housing for operation.

[0013] As a further optional solution, the lock housing is equipped with a stop assembly to stop the knob, screw body and linkage in the unlock position. The stop assembly can only be released by external force.

[0014] As a further alternative, the stop assembly includes a rod and a lever slidably mounted on the screw body. The lock housing is provided with a slot, and the rod is connected to an elastic element so that the rod can be elastically inserted into the slot in the unlocked state, thereby restricting the rotation of the knob. External force can be applied to the lever to disengage the rod from the slot and release the restriction on the knob.

[0015] As a further optional solution, the stop assembly also includes an inner carrier fixed to the screw body, and the insert rod is slidably mounted on the inner carrier.

[0016] As a further alternative, the insert includes a rod body and a limiting protrusion, the limiting protrusion engaging with a slot, and a mating ramp between the end of the rod body and the lever, so that when the lever moves relative to the knob, the insert is pushed to move via the mating ramp.

[0017] As a further optional solution, the lock body assembly also includes a key cylinder and an unlocking block located at the bottom of the key cylinder. The unlocking block can restrict the movement of the linkage. When the correct key is inserted and the unlocking block is rotated as the correct instruction, the restriction of the unlocking block on the linkage can be released. The lock body assembly also includes a combination wheel set and a central shaft passing through the combination wheel set. The central shaft can restrict the movement of the linkage. After the combination wheel set is rotated to the correct combination as the correct instruction, the central shaft can move axially to release the restriction on the linkage.

[0018] As a further optional solution, the latch seat is provided with an elastic element that applies force to the locking member, so that the locking member maintains its potential energy against the second locking hook. The locking member is provided with a clearance groove, and a blocking part is provided inside the lock housing. In the unlocked state, the clearance groove and the blocking part are misaligned, and the blocking part abuts against the locking member; when the second locking hook is inserted into the latch seat, the locking member is pushed, so that the clearance groove and the blocking part are aligned, thereby releasing the blocking part from limiting the locking member. The blocking part is a rib plate integrally formed inside the lock housing, and the rib plate is slidably guided with the latch seat.

[0019] The beneficial effects of this invention are: This invention discloses a rotary combination lock for bags. When in use, the user turns the knob to rotate the screw, which in turn moves the helically driven linkage, thereby unlocking the locking assembly. Compared with existing technologies, the helical drive between the screw and the linkage provides a better user experience and a more compact and stable transmission.

[0020] Because of the locking mechanism, in the unlocked state, the latch seat slides to the unlocked position, the second hook separates from the first hook, and the locking mechanism locks into the lock housing, thus fixing the latch seat in the unlocked position. At this time, the second hook can be freely inserted and removed from the latch seat without any obstruction. When the second hook is inserted into the latch seat, it can move the locking mechanism to release the limit between it and the lock housing, thereby allowing the latch seat to move to the locked position. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a rotary combination lock for a bag, as shown in the embodiment.

[0022] Figure 2 This is a schematic diagram of the internal structure of a rotary combination lock for bags in one of the embodiments.

[0023] Figure 3 This is an exploded view of the internal structure of a rotary combination lock for bags, as shown in the embodiment.

[0024] Figure 4 This is a cross-sectional view of the internal structure of a rotary combination lock for bags in one of the embodiments.

[0025] Figure 5 This is a schematic diagram of the engagement of the latch seat, the second locking hook, and the stop member in the embodiment, showing the locked state.

[0026] Figure 6 This is a schematic diagram of the fastening component in the embodiment in the unlocked state.

[0027] Figure 7 This is an exploded view of a rotary combination lock for a bag, as described in the embodiment.

[0028] Figure label: Lock housing 1, rotating base 11, annular protrusion 12, inner recess 13, slot 131, blocking part 14; Lock body assembly 2, key lock cylinder 21, unlocking block 22, combination wheel assembly 23, central shaft 24, screw body 25, threaded groove 251, knob 26, stop assembly 27, insertion rod 271, rod body 2711, limit protrusion 2712, lever 272, inner carrier 28; 3. Fastening assembly, 31. Locking seat, 32. First locking hook, 33. Second locking hook, 34. Positioning piece, 341. Relief groove, 35. Insertion groove, 36. Stopping structure; Linkage component 4, long groove 41, oblique protrusion 42; Swing seat 5. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] This embodiment describes a rotary combination lock for bags, such as... Figures 1 to 7 As shown, the lock includes a lock housing 1, a lock body assembly 2 installed on the lock housing 1, and a latching assembly 3 for locking the opening and closing sides of the outer bag. A linkage 4, movably installed in the lock housing 1, is provided between the lock body assembly 2 and the latching assembly 3. After the correct command is input into the lock body assembly 2, the latching assembly 3 can be released from locking the two opening and closing sides of the bag via the linkage 4. The linkage 4 is locked as follows: the lock body assembly 2 includes a key lock cylinder 21 and an unlocking block 22 located at the bottom of the key lock cylinder 21. The unlocking block 22 is elongated. The linkage 4 has an elongated groove 41 for the unlocking block 22 to be inserted. The end of the unlocking block 22 along its length direction can abut against the linkage 4 to restrict its movement. When the correct key is inserted and the unlocking block 22 is rotated as the correct command, the length direction of the unlocking block 22 is offset from the linkage 4, creating space for linkage movement, thereby releasing the restriction of the unlocking block 22 on the linkage 4. The lock body assembly 2 also includes a combination wheel set 23 and a central shaft 24 passing through the combination wheel set 23. The central shaft 24 abuts against the unlocking block 22, thus restricting the movement of the unlocking block 22 and the linkage 4. The hole at the bottom of the unlocking block 22 that mates with the key lock cylinder 21 is an elongated hole. After the combination wheel set 23 rotates to the correct combination as the correct command, the central shaft 24 can move axially to release the restriction on the unlocking block 22 and the linkage 4. After unlocking with the key or combination, manual operation is required to move the linkage 4, which in turn drives the locking assembly 3.

[0031] The lock body assembly 2 also includes a screw body 25 rotatably mounted on the lock housing 1 within a preset range. The linkage 4 and the screw body 25 are helically driven. A knob 26 is provided on the outside of the screw body 25. The knob 26 and the screw body 25 can rotate together to drive the linkage 4 to move to the unlocked or locked position. Specifically, a rotating base 11 is provided inside the lock housing 1. Interlocking annular protrusions 12 are provided between the rotating base 11 and the two ends of the screw body 25, so that the two ends of the screw body 25 can be rotatably mounted on different rotating bases 11.

[0032] When in use, the user turns the knob 26 to rotate the screw body 25, which in turn moves the linkage 4, thereby unlocking the locking assembly 3. Compared with existing technologies, the screw body 25 and the linkage 4 provide a better user experience and a more compact and stable transmission. Moreover, the knob 26 is easy to operate with a single finger, although it can also be operated with two or more fingers in practice without limitation.

[0033] Specifically, the outer side of the screw body 25 is integrally formed with a threaded groove 251. The linkage 4 is plate-shaped and slidably installed inside the lock housing 1. The linkage 4 is provided with several oblique protrusions 42 that adapt to the threaded groove 251, so that the linkage 4 slides linearly when the screw body 25 rotates. Since the screw body 25 only needs to rotate within a small angle range when switching between unlocking and locking, the threaded groove 251 only needs to be arranged locally around the circumference of the screw body 25. Of course, the threaded groove 251 can also be provided around the entire circumference of the screw body 25 according to other requirements.

[0034] In this embodiment, the knob 26 and the screw body 25 are fixedly connected by screws, and the inner wall of the knob 26 is arc-shaped and surrounds the screw body 25. The knob 26 is exposed outside the lock housing 1 for operation.

[0035] In this embodiment, in order to keep the linkage 4 in the unlocked position, the lock housing 1 is provided with a stop component 27, which is used to stop the knob 26, the screw body 25 and the linkage 4 in the unlocked position. Only after the stop component 27 is operated by external force can the stop be released and the knob 26 be operated to rotate to the locked position.

[0036] Specifically, the stop assembly 27 includes a rod 271 and a lever 272 slidably mounted on the screw body 25. The lock housing 1 is provided with a slot 131. The rod 271 is connected to an elastic element (not shown in the figure) so that the rod 271 can elastically insert into the slot 131 in the unlocked state, thereby restricting the rotation of the knob 26. External force can operate the lever 272 to drive the rod 271 out of the slot 131 to release the restriction on the knob 26. The stop assembly 27 also includes an inner carrier 28, which is fixed to the screw body 25. The rod 271 is slidably mounted on the inner carrier 28, and the inner carrier 28 is provided with a guide groove for the directional movement of the rod 271. Specifically, the insertion rod 271 includes a rod body 2711 and a limiting protrusion 2712. The limiting protrusion 2712 engages with the slot 131. The end of the rod body 2711 has a V-shaped protrusion, and the lever 272 is provided with a V-shaped groove, thereby forming a mating inclined surface between them. This allows the insertion rod 271 to move via the mating inclined surface when the lever 272 moves relative to the knob 26. Of course, in practice, the mating inclined surface does not necessarily have to be V-shaped; it can be a single inclined surface. The purpose is to ensure that the moving direction of the lever 272 is perpendicular to the moving direction of the insertion rod 271. Specifically, the lock housing 1 is fixed with an inner seat 13, and the slot 131 is disposed at the inner seat 13.

[0037] The fastening assembly 3 includes a latch seat 31 slidably installed inside the lock housing 1. The latch seat 31 is connected to the linkage 4. The latch seat 31 is provided with a first latch hook 32. The fastening assembly 3 also includes a second latch hook 33, which can be inserted into the latch seat 31 to cooperate with the first latch hook 32. The latch seat 31 is provided with a locking member 34. In the unlocked state, the linkage 4 drives the latch seat 31 to slide to the unlocked position, the second latch hook 33 separates from the first latch hook 32, and the locking member 34 locks into the lock housing 1, fixing the latch seat 31 in the unlocked position. At this time, the second latch hook 33 can be freely inserted and removed from the latch seat 31 without obstruction, especially when the latch seat 31 cannot move elastically and requires manual operation to switch the latch between the locked and unlocked positions. When the second latch hook 33 is inserted into the latch seat 31, it can drive the locking member 34 to move and release the limit between it and the lock housing 1, thereby allowing the latch seat 31 to move to the locked position.

[0038] Specifically, the latch seat 31 is provided with an elastic element (not shown in the figure) that applies force to the locking member 34, so that the locking member 34 maintains the potential energy of abutting against the second locking hook 33, which helps the locking member 34 to push the second locking hook 33 away from the latch seat 31 after unlocking, and the locking member 34 to move to the position of locking the latch seat 31 in time after the second locking hook 33 is removed.

[0039] Specifically, the locking member 34 is provided with a clearance groove 341, and the lock housing 1 is provided with a blocking part 14. In the unlocked state, the clearance groove 341 and the blocking part 14 are misaligned, and the blocking part 14 presses against the locking member 34. When the second lock hook 33 is inserted into the lock seat 31, it pushes the locking member 34, so that the clearance groove 341 is aligned with the blocking part 14, thereby releasing the blocking part 14 from limiting the locking member 34. The blocking part 14 is a rib plate integrally formed in the lock housing 1, and the rib plate is slidably guided with the lock seat 31.

[0040] Specifically, the latch seat 31 is provided with an insertion groove 35 for the second locking hook 33 to be inserted, the first locking hook 32 is a locking groove extending to the side of the insertion groove 35, and the locking member 34 passes into the insertion groove 35. The locking groove is a trapezoidal groove, and the second locking hook 33 is provided with an inclined surface that matches the locking groove.

[0041] Specifically, the locking seat 31 is provided with a stop structure 36 for limiting the travel of the locking member 34.

[0042] Specifically, a swing seat 5 is provided between the linkage 4 and the lock seat 31. The middle part of the swing seat 5 is rotatably installed on the lock housing 1. The linkage 4 and the lock seat 31 are respectively movably connected to the two ends of the swing seat 5. When the linkage 4 slides linearly, it drives the swing seat 5 to rotate within a small range, thereby driving the lock seat 31 to slide linearly.

[0043] In the description of this invention, it is obvious that the described embodiments are merely a part of the embodiments of the invention, and not all of them. The components of the embodiments of the invention described and illustrated herein can generally be arranged and designed in various different configurations.

[0044] Therefore, the above detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0045] In the description of this invention, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A rotary combination lock for a bag, comprising a lock housing (1), a lock body assembly (2) mounted on the lock housing (1), and a latching assembly (3) for locking the opening and closing sides of the outer bag, wherein a linkage member (4) is provided between the lock body assembly (2) and the latching assembly (3) and is movably mounted in the lock housing (1), and after the correct command is input into the lock body assembly (2), the latching assembly (3) can be driven by the linkage member (4) to release the locking of the two opening and closing sides of the bag, characterized in that: The lock body assembly (2) includes a screw body (25) that can be rotatably installed on the lock shell (1) within a preset range. The linkage (4) and the screw body (25) are mutually screw driven. A knob (26) is provided on the outside of the screw body (25). The knob (26) and the screw body (25) can rotate together to drive the linkage (4) to move to the unlock position or the lock position. The fastening assembly (3) includes a latch seat (31) slidably installed inside the lock housing (1). The latch seat (31) is connected to the linkage (4). The latch seat (31) is provided with a first latch hook (32). The fastening assembly (3) also includes a second latch hook (33). The second latch hook (33) can be inserted into the latch seat (31) and cooperate with the first latch hook (32). The latch seat (31) is provided with a locking member (34). In the unlocked state, the latch seat (31) slides to the unlocked position, the second latch hook (33) separates from the first latch hook (32), and the locking member (34) locks into the lock housing (1) to fix the latch seat (31) in the unlocked position. When the second latch hook (33) is inserted into the latch seat (31), it can drive the locking member (34) to move and release the limit between it and the lock housing (1), thereby allowing the latch seat (31) to move to the locked position. The locking member (34) is provided with a clearance groove (341), and the lock housing (1) is provided with a blocking part (14). In the unlocked state, the clearance groove (341) and the blocking part (14) are misaligned, and the blocking part (14) presses against the locking member (34). When the second lock hook (33) is inserted into the lock seat (31) and the locking member (34) is pushed, the clearance groove (341) and the blocking part (14) are aligned, and the blocking part (14) releases the restriction on the locking member (34).

2. The rotary combination lock for bags according to claim 1, characterized in that: The lock housing (1) is provided with a rotating seat (11), and there are nested annular protrusions (12) between the rotating seat (11) and the two ends of the screw body (25), so that the two ends of the screw body (25) can be rotatably installed on different rotating seats (11).

3. A rotary combination lock for bags according to claim 1, characterized in that: The screw body (25) has an integrally formed threaded groove (251) on the outside. The linkage (4) is plate-shaped and slidably installed in the lock housing (1). The linkage (4) is provided with several oblique protrusions (42) that are adapted to the threaded groove (251) so that the screw body (25) rotates and drives the linkage (4) to slide linearly.

4. A rotary combination lock for bags according to claim 1, characterized in that: The knob (26) is fixedly connected to the screw body (25), and the inner wall of the knob (26) is arc-shaped and surrounds the screw body (25). The knob (26) is exposed outside the lock housing (1) for operation.

5. A rotary combination lock for bags according to claim 1, characterized in that: The lock housing (1) is provided with a stop assembly (27) to stop the knob (26), screw body (25) and linkage (4) in the unlock position. The stop position can only be released by external force operating the stop assembly (27).

6. A rotary combination lock for bags according to claim 5, characterized in that: The stop assembly (27) includes a rod (271) and a lever (272) slidably mounted on the screw body (25). The lock housing (1) is provided with a slot (131). The rod (271) is connected to an elastic element so that the rod (271) can be elastically inserted into the slot (131) in the unlocked state, thereby restricting the rotation of the knob (26). External force operation of the lever (272) can drive the rod (271) to disengage from the slot (131) to release the restriction on the knob (26).

7. A rotary combination lock for bags according to claim 6, characterized in that: The stop assembly (27) also includes an inner carrier (28), which is fixed to the screw body (25), and the insert (271) is slidably mounted on the inner carrier (28).

8. A rotary combination lock for bags according to claim 6, characterized in that: The insert (271) includes a rod body (2711) and a limiting protrusion (2712). The limiting protrusion (2712) engages with the slot (131). A mating ramp is provided between the end of the rod body (2711) and the lever (272) so that when the lever (272) moves relative to the knob (26), it pushes the insert (271) to move via the mating ramp.

9. A rotary combination lock for bags according to claim 1, characterized in that: The lock body assembly (2) also includes a key lock cylinder (21) and an unlocking block (22) located at the bottom of the key lock cylinder (21). The unlocking block (22) can restrict the movement of the linkage (4). When the correct key is inserted and the unlocking block (22) is rotated as the correct instruction, the unlocking block (22) can release the restriction of the linkage (4). The lock body assembly (2) also includes a combination wheel set (23) and a central shaft (24) passing through the combination wheel set (23). The central shaft (24) can restrict the movement of the linkage (4). After the combination wheel set (23) is rotated to the correct combination as the correct instruction, the central shaft (24) can move axially and release the restriction of the linkage (4).

10. A rotary combination lock for bags according to claim 1, characterized in that: The latch seat (31) is provided with an elastic element that applies force to the locking member (34) so ​​that the locking member (34) maintains the potential energy of resisting the second locking hook (33); the blocking part (14) is a rib plate integrally formed in the lock shell (1), and the rib plate slides and guides the latch seat (31).

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