A combination lock for a suitcase

Abstract

This invention relates to the field of lock technology, specifically to a combination lock for suitcases, comprising a lock body and a base. The lock body includes a faceplate and a cover plate. The faceplate is fixedly mounted on the cover plate, forming a receiving cavity between the faceplate and the cover plate. The receiving cavity contains buttons, a combination wheel assembly, and a locking block. The lock body has a circular structure. Two buttons are symmetrically arranged on both sides of the faceplate along the diameter of the circular structure. The locking block is located between the two buttons and can slide perpendicular to the line connecting the two buttons, driven by the buttons. One end of the locking block in the sliding direction has a locking protrusion, and the base has a locking groove that matches the locking protrusion. The combination wheel assembly is linked to a clutch block, which has a blocking part. The locking block has a stop that matches the blocking part. This combination lock is stable, reliable, and has a simple structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lock, in particular to a password lock for luggage. BACKGROUND

[0002] People generally carry luggage to place personal belongings, in order to ensure the safety of the items in the luggage, the luggage will be configured with a password lock. At present, the commonly used password lock is shown in Chinese patent CN201720019198.7, which includes a lock body hinged to an opening and closing side of a box body, the lock body includes a password wheel lock mechanism, a push block and a control push block moving lock block / lock piece. When unlocking, the lock block / lock piece is driven to rotate by adjusting the password wheel lock mechanism, so that it is staggered with the push block, so that the push block can be pressed to achieve unlocking. The unlocking process of this password lock needs the movement of the password wheel lock mechanism in the horizontal plane to cooperate with the rotation of the lock block / lock piece in the vertical plane, which is complex in structure and requires high precision for cooperation. SUMMARY

[0003] The present application relates to the technical field of lock, in particular to a password lock for luggage.

[0004] The purpose of the present application is achieved by the following technical scheme: the present application provides a password lock for luggage, which includes a lock body and a base, the lock body includes a face shell and a cover plate, the face shell is fixed on the cover plate, and a containing cavity is formed between the face shell and the cover plate, a button, a password wheel assembly and a lock block are arranged in the containing cavity;

[0005] The lock body is a circular structure, the button is provided with two, the two buttons are symmetrically arranged on the two sides of the face shell along the diameter of the circular structure, the lock block is arranged between the two buttons and can be driven by the two buttons to slide perpendicular to the connecting line of the two buttons, one end of the sliding direction of the lock block is provided with a clamping protrusion, and the base is provided with a clamping groove matched with the clamping protrusion;

[0006] The password wheel assembly is connected with a clutch block, the clutch block is provided with a blocking part, and the lock block is provided with a blocking part matched with the blocking part;

[0007] When locking, the password wheel assembly is in the locking position, the clutch block moves to the blocking part to block the blocking block to lock the lock block to avoid sliding, and the clamping protrusion of the lock block is clamped in the clamping groove, so as to realize locking;

[0008] When unlocking, the password wheel assembly is in the unlocking position, the clutch block moves to the blocking part to stagger with the blocking block, and the two buttons are pressed to drive the lock block to slide away from the clamping groove, so that the clamping protrusion is separated from the clamping groove, thereby realizing unlocking.

[0009] Further, the lock block is provided with a sliding block at two ends of the two buttons, the two buttons are provided with a sliding groove matched with the sliding block, the two sliding grooves are inclined from inside to outside along the unlocking direction of the lock block, and the end of the lock block away from the base abuts against the face shell through the first elastic member.

[0010] Further, the base is arranged at the bottom of the cover plate, the clamping groove passes through the cover plate to be clamped with the clamping convex, the base is further provided with two convex blocks passing through the cover plate, the two convex blocks are distributed on two sides of the clamping groove, and the two convex blocks and the clamping groove form an isosceles triangle structure.

[0011] Further, the password wheel assembly comprises a movable block and a transverse dialing password assembly, the password assembly comprises a code adjusting wheel and a password wheel, the password wheel cover is arranged on the code adjusting wheel and coaxially rotatable with the code adjusting wheel, the movable block is provided with a hole for accommodating the code adjusting wheel, a convex part is protruded from the side wall of the hole, a concave part matched with the convex part is arranged on the code adjusting wheel, a pushing part is extended from the movable block towards the clutch block, the end of the clutch block opposite to the pushing part abuts against the face shell through the second elastic member, and the end of the movable block provided with the pushing part abuts against the face shell through the third elastic member.

[0012] When the lock is locked, the convex part is misaligned with the concave part, the pushing part does not apply a pushing force to the clutch block, the second elastic member is in a natural elongation state, the blocking part of the clutch block blocks the blocking block of the lock block to lock the lock block to avoid sliding, and the clamping convex of the lock block is clamped in the clamping groove, so as to realize the locking.

[0013] When the lock is unlocked, the convex part is clamped in the concave part, the pushing part pushes the clutch block to misalign the blocking part with the blocking block, and the two buttons are pressed to drive the lock block to slide away from the clamping groove, so that the clamping convex is separated from the clamping groove, thereby realizing the unlocking.

[0014] Further, the code adjusting wheel and the corresponding password wheel are connected through a code adjusting spring.

[0015] The movable block is provided with a code adjusting switch below, the code adjusting switch is provided with a recess and a limiting groove in communication with each other, the recess and the limiting groove are arranged adjacent to each other and have a height difference, the bottom of the code adjusting switch is provided with a dialing block, the dialing block passes through the cover plate and extends towards the base, and dialing the dialing block can slide the code adjusting switch to adjust the code adjusting state.

[0016] In the code adjusting state, the code adjusting switch slides to the code adjusting wheel in the recess, the code adjusting spring is elongated and separates the password wheel from the code adjusting wheel.

[0017] In the non-code adjusting state, the code adjusting switch slides to the code adjusting wheel in the limiting groove, and the code adjusting spring is contracted to arrange the password wheel on the code adjusting wheel.

[0018] Further, the bottom side of the code adjusting wheel is provided with a recess, the recess is arranged opposite to the concave part, the inner wall of the recess extends upwards to form a limiting part, and the limiting part is arranged opposite to the limiting groove.

[0019] In the adjustable code state, the limiting part is clamped in the recess.

[0020] Further, the movable block extends a lower protrusion towards the code adjusting switch, and the code adjusting switch is provided with an upper recess matched with the lower protrusion.

[0021] In the adjustable code state, the lower protrusion is clamped in the upper recess to limit the sliding of the code adjusting switch.

[0022] In the non-adjustable code state, the lower protrusion is separated from the upper recess along the sliding direction of the code adjusting switch.

[0023] Further, the clutch block is provided with a protrusion perpendicular to the sliding direction of the clutch block, and the accommodating cavity is provided with a lock core rotatably installed on the cover plate, and the outer side wall of the lock core is provided with a push block, and the rotation of the lock core can push the protrusion with the push block to make the clutch block slide, so as to realize the dislocation of the blocking part and the blocking block.

[0024] Further, the lower end of the face shell is hinged with a support, and the support is oppositely arranged with the base.

[0025] Further, there is a gap between the side wall of the face shell and the support.

[0026] The luggage password lock has the following beneficial effects:

[0027] (1) The password lock is a circular structure, and two buttons are oppositely arranged on the diameter of the circular structure. When unlocking, the two buttons are pressed simultaneously to drive the lock block to slide and unlock. The transmission structure is stable, and quick unlocking can be realized.

[0028] (2) The password lock is locked and unlocked by the sliding of the clutch block and the lock block. The transmission structure is simple, the overall structure of the password lock is more stable, and the service life of the password lock is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0029] The application is further described by using the drawings, but the embodiments in the drawings do not constitute any limitation on the application. For ordinary skilled in the art, other drawings can be obtained without creative labor on the basis of the following drawings.

[0030] Figure 1 It is a structural schematic view of the password lock installed on the luggage in the embodiment.

[0031] Figure 2 It is an exploded view of the password lock in the embodiment.

[0032] Figure 3 It is an exploded view of the face shell and the support in the embodiment.

[0033] Figure 4 It is an exploded view of the base and the lock block in the embodiment.

[0034] Figure 5 This is an exploded view of the base, locking block, and clutch block in the embodiment.

[0035] Figure 6 This is an exploded view of the password wheel assembly and clutch block in the embodiment.

[0036] Figure 7 This is an exploded view of the cipher wheel assembly in the embodiment.

[0037] Reference numerals: Luggage box 0, Adjusting spring 01, First elastic element 02, Second elastic element 03, Third elastic element 04, Base 1, Slot 11, Protrusion 12, Bracket 2, Faceplate 3, Cover plate 4, Button 5, Slide groove 51, Combination wheel assembly 6, Movable block 61, Hole 611, Push part 612, Protrusion 613, Lower protrusion 614, Adjusting wheel 62, Recess 621, Depression 622, Adjusting switch 63, Toggle block 631, Limiting part 632, Groove 633, Limiting groove 634, Upper recess 635, Combination wheel 64, Lock block 7, Snap protrusion 71, Stop block 72, Slider 73, Clutch block 8, Blocking part 81, Protrusion 82, Lock cylinder 9, Push block 91. Detailed Implementation

[0038] The present invention will be further described in conjunction with the following embodiments.

[0039] The present invention provides a combination lock for a suitcase, such as... Figures 1 to 4 As shown, the system includes a lock body, a base 1, and a bracket 2. The base 1 and bracket 2 are positioned opposite each other and are fixed to the two opening sides of the suitcase 0, respectively. The lock body has a circular cross-section and includes a faceplate 3 and a cover plate 4. The faceplate 3 is fixedly mounted on the cover plate 4, and a receiving cavity is formed between them. The cover plate 4 is located above the base 1 and has a non-circular structure. It, together with the bracket 2, forms a base plate corresponding to the faceplate 3. The faceplate 3 is hinged to the bracket 2, and there is a gap between the side wall of the faceplate 3 located above the bracket 2 and the bracket 2. Therefore, when unlocking, the faceplate 3 can rotate around the connection with the bracket 2 and move the cover plate 4 away from the base 1 to achieve unlocking. In this embodiment, the fixing methods between the base 1 and the suitcase 0, between the bracket 2 and the suitcase 0, and between the faceplate 3 and the cover plate 4 can all be bolted.

[0040] like Figure 2 and Figure 4As shown, the accommodating cavity is provided with two buttons 5 and a locking block 7. The two buttons 5 are symmetrically arranged on the two sides of the face shell 3 along the diameter of the circular structure, and the line connecting the two buttons 5 is perpendicular to the line connecting the support 2 and the base 1. The locking block 7 is arranged between the two buttons 5 and can be driven by the two buttons 5 to slide along the line connecting the base 1 and the support 2. It should be emphasized that the base 1 and the support 2 are also symmetrically arranged on the diameter of the circular structure, and the locking block 7 slides along the diameter of the circular structure. Therefore, the two buttons 5 simultaneously apply the same force to the locking block 7, which can make the locking block 7 slide quickly and stably.

[0041] Specifically, the wing plates connected with the two buttons 5 and the locking block 7 are each provided with a sliding groove 51, which is inclined from the inside of the circular structure to the outside along the unlocking direction of the locking block 7. The locking block 7 is provided with two sliding blocks 73 at the two ends connected with the two buttons 5. The two sliding grooves 51 and the two sliding blocks 73 are symmetrically arranged, and each sliding block 73 is clamped in the corresponding sliding groove 51 and can slide along the sliding groove 51. Therefore, simultaneously pressing the two buttons 5 towards each other makes the two sliding blocks 73 slide along the sliding grooves 51, thereby driving the locking block 7 to slide towards the support 2 to achieve unlocking.

[0042] As shown in Figure 2 and Figure 4 When the password lock is locked, the locking block 7 is locked with the base 1. Specifically, the base 1 is provided with a clamping groove 11, and the cover plate 4 is provided with a mounting hole through which the clamping groove 11 passes. The base 1 is arranged at the bottom of the cover plate 4, and the clamping groove 11 of the base 1 passes out of the upper end surface of the cover plate 4 from the mounting hole of the cover plate 4. The end of the locking block 7 close to the base 1 is provided with a clamping protrusion 71 matched with the clamping groove 11, and the end of the locking block 7 close to the support 2 abuts against the face shell 3 through the first elastic member 02. When locking, the two buttons 5 are located at the side of the face shell 3, the first elastic member 02 is in a natural elongation state, and the clamping protrusion 71 is clamped in the clamping groove 11. When unlocking, the two buttons 5 are simultaneously pressed towards each other, the locking block 7 slides towards the support 2 and compresses the first elastic member 02, and at the same time, the clamping protrusion 71 is separated from the clamping groove 11. When the two buttons 5 are released again, without external force, the first elastic member 02 rebounds to make the locking block 7 slide towards the base 1, and drives the two buttons 5 to return to the original position. When the first elastic member 02 returns to the natural elongation state, the clamping protrusion 71 is clamped in the clamping groove 11 again to lock.

[0043] Preferably, in order to realize precise positioning of the clamping protrusion 71 and the clamping groove 11, the base 1 is provided with two protrusions 12, and the cover plate 4 is provided with two through holes matched with the two protrusions 12. The two protrusions 12 pass out of the upper end surface of the cover plate 4 from the corresponding through holes. The two protrusions 12 are separately arranged on the two sides of the clamping groove 11, and the two protrusions 12 and the clamping groove 11 form an isosceles triangle structure, thereby stably connecting the base 1 and the cover plate 4, and further ensuring the precise clamping of the clamping protrusion 71 and the clamping groove 11.

[0044] Further, the locking block 7 and the unlocking of the base 1 in the present embodiment are realized by the cooperation of the password wheel assembly 6 and the clutch block 8 with the button 5. As shown in Figure 2 , Figure 5 and Figure 6 , the password wheel assembly 6 is arranged on the side of the face cover 3 and above the base 1, which comprises a movable block 61 and a transversely pushable password assembly, the password assembly comprising a code setting wheel 62 and a password wheel 64 clamped on the code setting wheel 62, and the password wheel 64 and the code setting wheel 62 are coaxially rotatable, the movable block 61 is provided with a hole 611 for accommodating the code setting wheel 62, the side wall of the hole 611 protrudes a convex portion 613, and the code setting wheel 62 is provided with a concave portion 621 matched with the convex portion 613.

[0045] The end of the locking block 7 close to the base 1 is provided with a block 72 extending towards the base 1, the clutch block 8 is arranged above the locking block 7 and perpendicular to the sliding direction of the locking block 7, and can slide along a direction perpendicular to the sliding direction of the locking block 7, and the bottom of the clutch block 8 is provided with a blocking portion 81 matched with the block 72. The movable block 61 extends a pushing portion 612 towards the inside of the circular structure, the pushing portion 612 is towards the starting end of the sliding direction of the clutch block 8, the end of the sliding direction of the clutch block 8 abuts against the face cover 3 through the second elastic member 03, and one end of the movable block 61 provided with the pushing portion 612 abuts against the face cover 3 through the third elastic member 04. When locking, the convex portion 613 of the movable block 61 is misaligned with the concave portion 621 of the code setting wheel 62, the third elastic member 04 is compressed, the pushing portion 612 of the movable block 61 does not exert force on the clutch block 8, the blocking portion 81 of the clutch block 8 blocks the block 72 of the locking block 7, so that the clamping convex 71 is clamped in the clamping groove 11, at this time, the two buttons 5 cannot be pressed. When unlocking by pushing the password wheel 64, the convex portion 613 of the movable block 61 is aligned with the concave portion 621 of the code setting wheel 62, at this time the second elastic member 03 rebounds to push the convex portion 613 of the movable block 61 to be clamped in the concave portion 621 of the code setting wheel 62, and at the same time the pushing portion 612 pushes the clutch block 8 to slide so that the blocking portion 81 is misaligned with the block 72, at this time the two buttons 5 are pressed simultaneously, the locking block 7 slides towards the support 2 and compresses the first elastic member 02, at the same time the clamping convex 71 is separated from the clamping groove 11, the face cover 3 is lifted up and the cover plate 4 is lifted up, so that the face cover 3 rotates around the connecting portion with the support 2, thereby realizing unlocking. When the cover plate 4 and the face cover 3 are re-engaged on the base 1, the first elastic member 02 rebounds to make the locking block 7 slide towards the base 1, and the two buttons 5 are reset, when the first elastic member 02 returns to the natural elongation state, the clamping convex 71 is clamped in the clamping groove 11, at this time the password wheel 64 is pushed randomly, the convex portion 613 of the movable block 61 is misaligned with the concave portion 621 of the code setting wheel 62, the third elastic member 04 is compressed, the clutch block 8 does not exert force due to the pushing portion 612, the second elastic member 03 rebounds, the blocking portion 81 of the clutch block 8 blocks the block 72 of the locking block 7, and the password lock is locked.

[0046] In practical application, the user needs to reset the password after purchasing the luggage 0 to ensure security. As shown in Figure 7 The code adjusting spring 01 is connected between the code adjusting wheel 62 and the corresponding password wheel 64. The lower part of the movable block 61 is provided with a code adjusting switch 63. The code adjusting switch 63 is provided with a recess 633 and a limiting groove 634 which are in communication with each other. The recess 633 and the limiting groove 634 are arranged adjacent to each other and have a height difference therebetween. Figure 7 As shown in the direction, the limiting groove 634 is shallower and smaller in diameter than the recess 633. The bottom of the code adjusting switch 63 is provided with a knob 631 which extends through the cover plate 4 and the refrigerator base 1. The code adjusting switch 63 can be slid by rotating the knob 631.

[0047] It is emphasized that the password reset needs to be performed under the condition that the correct password is used and the unlocking is successful. Therefore, the bottom side of the code adjusting wheel 62 is provided with a recess 622 which is arranged opposite to the recess 621. The inner wall of the recess 633 extends upward to form a limiting portion 632 which is arranged opposite to the limiting groove 634. The movable block 61 extends downward to form a lower protrusion 614 which is arranged toward the code adjusting switch 63. The code adjusting switch 63 is provided with an upper recess 635 which is adapted to the lower protrusion 614. In the state of unsuccessful unlocking, the knob 631 is hidden in the lock body and the password reset cannot be achieved. In the state of successful unlocking, the face shell 3 and the cover plate 4 are lifted and separated from the base 1. The knob 631 is exposed. The code adjusting switch 63 is slid in the direction of the push portion 612 of the movable block 61 by rotating the knob 631. The code adjusting wheel 62 is moved from the limiting groove 634 of the code adjusting switch 63 to the recess 633. In comparison, the code adjusting wheel 62 is moved downward. The code adjusting spring 01 is elongated to separate the code adjusting wheel 62 from the password wheel 64. The code adjusting wheel 62 and the code adjusting switch 63 are limited by the clamping of the recess 622 and the limiting portion 632 to prevent relative movement therebetween. At the same time, the code adjusting switch 63 is slid to the state that the upper recess 635 is clamped with the lower protrusion 614 of the movable block 61 to prevent relative movement therebetween. Thus, the code adjusting switch 63, the code adjusting wheel 62 and the movable block 61 are locked to prevent the movement of a certain component from affecting the password reset. At this time, the password wheel 64 is in a suspended state. The password wheel 64 is rotated to the desired password. Then, the upper recess 635 is separated from the sliding direction of the lower protrusion 614 of the code adjusting switch 63 by rotating the knob 631. Thus, the code adjusting switch 63 is reset. The code adjusting wheel 62 is clamped in the limiting groove 634 again. The password wheel 64 is clamped on the code adjusting wheel 62 again. Thus, the password reset is achieved.

[0048] In addition, as shown in Figure 2As shown, the password lock of the embodiment can be unlocked by the lock core 9 in addition to the unlocking by the password wheel assembly 6. The lock core 9 is rotatably arranged on the cover plate 4, and the outer side wall of the lock core 9 is provided with a push block 91. The clutch block 8 is provided with a protrusion 82, which is perpendicular to the sliding direction of the clutch block 8. When the lock core 9 rotates, the push block 91 pushes the protrusion 82 in the sliding direction of the clutch block 8, so that the lock core 9 can be twisted by a key to push the protrusion 82 by the push block 91 of the lock core 9, thereby driving the clutch block 8 to slide to make the blocking part 81 of the clutch block 8 and the blocking block 72 of the lock block 7, and then the unlocking can be realized by pressing the button 5. When locking, the lock core 9 is twisted in the reverse direction, the push block 91 is separated from the protrusion 82, the clutch block 8 moves in the reverse direction under the rebound force of the second elastic member 03, the blocking part 81 blocks the blocking block 72, thereby realizing the locking.

[0049] The first elastic member 02, the second elastic member 03 and the third elastic member 04 of the embodiment can be selected as springs.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited to the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A luggage case coded lock, comprising a lock body and a base, the lock body comprising a face shell and a cover plate, the face shell fixed cover is arranged on the cover plate, and the face shell and the cover plate form a containing cavity, the containing cavity is provided with a button, a coded wheel assembly and a lock block, characterized in that: the coded lock further comprises a bracket, the base and the bracket are oppositely arranged, and are used for being fixed on two opening and closing sides of a luggage case respectively, the cover plate is arranged above the base, the cover plate and the bracket jointly form a bottom plate corresponding to the face shell, and the face shell and the bracket are hinged; the lock body is a circular structure, the button is provided with two, the two buttons are symmetrically arranged on the two sides of the face shell along the diameter of the circular structure, the lock block is arranged between the two buttons and can be driven by the two buttons to slide perpendicular to the connecting line of the two buttons, one end of the sliding direction of the lock block is provided with a clamping convex, and the base is provided with a clamping groove matched with the clamping convex; the coded wheel assembly is connected with a clutch block in linkage, the clutch block is provided with a blocking part, and the lock block is provided with a stop block matched with the blocking part; when locking, the coded wheel assembly is in a locking position, the clutch block moves to the blocking part to block the stop block, so as to lock the lock block to avoid sliding, the clamping convex of the lock block is clamped in the clamping groove, so as to realize locking; when unlocking, the coded wheel assembly is in an unlocking position, the clutch block moves to the blocking part to be staggered with the stop block, and at the same time, the two buttons are pressed to drive the lock block to slide away from the clamping groove, so that the clamping convex is separated from the clamping groove, thereby realizing unlocking. The two ends of the lock block towards the two buttons are provided with sliding blocks, the two buttons are provided with sliding grooves matched with the sliding blocks, the two sliding grooves are inclined from inside to outside along the unlocking direction of the lock block, and the end of the lock block away from the base abuts against the face shell through a first elastic piece. The clamping groove penetrates through the cover plate to be clamped with the clamping convex, the base is further provided with two convex blocks penetrating through the cover plate, the two convex blocks are distributed on the two sides of the clamping groove, and the two convex blocks and the clamping groove form an isosceles triangle structure. The coded wheel assembly comprises a movable block and a transverse coded component, the coded component comprises a code adjusting wheel and a coded wheel, the coded wheel cover is arranged on the code adjusting wheel and can rotate coaxially, the movable block is provided with a hole for containing the code adjusting wheel, a convex part is protruded from the side wall of the hole, the code adjusting wheel is provided with a concave part matched with the convex part, the movable block extends a pushing part towards the clutch block, the end of the clutch block opposite to the pushing part abuts against the face shell through a second elastic piece, and the end of the movable block provided with the pushing part abuts against the face shell through a third elastic piece; When locking, the convex part is staggered with the concave part, the pushing part does not apply a pushing force to the clutch block, the second elastic piece is in a natural elongation state, the blocking part of the clutch block blocks the stop block of the lock block to lock the lock block to avoid sliding, and the clamping convex of the lock block is clamped in the clamping groove, so as to realize locking; ​ 2. The combination luggage case and lock thereof of claim 1 wherein: ​ 3. The combination luggage case and lock thereof of claim 1 wherein: ​ 4. A combination lock for a suitcase according to claim 3, wherein: ​ ​ When unlocking, the convex part is clamped in the concave part, the push part pushes the clutch block to make the blocking part disengage from the stop block, and two buttons are pressed to drive the lock block to slide away from the clamping groove, so that the clamping convex part is separated from the clamping groove, thereby achieving unlocking.

5. A combination lock for a suitcase according to claim 4, wherein: The coding wheel and the corresponding password wheel are connected through a coding spring. The bottom of the movable block is provided with a coding switch, the coding switch is provided with a recess and a limiting groove which are in communication with each other, the recess and the limiting groove are adjacent and have a height difference, the bottom of the coding switch is provided with a dial block which extends to the base through the cover plate, and dialing the dial block can make the coding switch slide to adjust the coding state. In the adjustable coding state, the coding switch slides to the coding wheel in the recess, the coding spring is elongated and separates the password wheel from the coding wheel. In the non-adjustable coding state, the coding switch slides to the coding wheel in the limiting groove, and the coding spring is contracted to cover the coding wheel on the password wheel.

6. A combination lock for a suitcase according to claim 5, wherein: The bottom side of the coding wheel is provided with a recess, the recess is opposite to the concave part, the inner wall of the recess extends upward to form a limiting part, and the limiting part is opposite to the limiting groove. In the adjustable coding state, the limiting part is clamped in the recess.

7. A combination lock for a suitcase according to claim 6, wherein: The movable block extends a lower convex part towards the coding switch, and the coding switch is provided with an upper concave part which is matched with the lower convex part. In the adjustable coding state, the lower convex part is clamped in the upper concave part to limit the sliding of the coding switch. In the non-adjustable coding state, the lower convex part is separated from the upper concave part in the sliding direction of the coding switch.

8. The combination according to claim 1, wherein: The clutch block is provided with a protrusion which is perpendicular to the sliding direction of the clutch block, the accommodating cavity is provided with a lock core which is rotatably installed on the cover plate, the outer side wall of the lock core is provided with a push block, and the lock core is rotated to make the push block push the protrusion to make the clutch block slide, thereby realizing the dislocation of the blocking part and the stop block.

9. The combination according to claim 3, wherein: There is a gap between the side wall of the face shell and the support.

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