Cylindrical lock, cabinet and automation equipment

Abstract

The invention relates to a cylindrical lock, a cabinet and an automation equipment, the cylindrical lock comprising a lock lining part and a lock core part, the lock lining part is used to be fixedly inserted into a lock hole reserved in a door frame to realize the installation of the cylindrical lock, the lock lining part is provided with a circular groove along the extension direction; the lock core part comprises a rotating shaft, a lock tongue and a shaft sleeve, the tail end of the rotating shaft is provided with an eccentric shaft, the eccentric shaft is parallel to and eccentric to the rotating shaft, a lock tongue is movably sleeved on the eccentric shaft, the lock tongue is slidably connected to the shaft sleeve, the rotating shaft is passed through the circular groove through the shaft sleeve, the inner circumferential surface of the shaft sleeve is provided with a protrusion, the circumferential surface of the rotating shaft is provided with a spiral groove spirally arranged along the axis of the rotating shaft, and the protrusion is inserted into the spiral groove; under the rotation action of the rotating shaft, the eccentric shaft can drive the lock tongue to slide in a direction perpendicular to the rotating shaft, thereby realizing unlocking or locking, and the spiral groove can push the protrusion and the shaft sleeve along the axial direction of the rotating shaft, so that the lock tongue can move along the axial direction of the rotating shaft, thereby adjusting the distance between the lock tongue and the door panel.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and in particular to a cylindrical lock, a cabinet and automation equipment. Background Art

[0002] Existing locks, especially cylindrical locks used on industrial cabinet doors or filing cabinets to open and close cabinet doors, are mainly made of sheet metal parts. The door panels are provided with bent parts near the edges of the locks. The cylindrical locks prevent the metal bent parts from flipping with the door panels by extending the lock tongue, thereby achieving the effect of locking the door panels. In order to ensure that the lock tongue can smoothly extend toward the door panel, a certain gap is usually provided between the lock tongue and the door panel. Such a setting will result in the gap between the lock tongue and the door panel being always large and difficult to eliminate when the door is locked, resulting in poor sealing performance between the door frame and the door panel, and the door panel is prone to shaking back and forth. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a cylindrical lock that can significantly reduce the gap between the door panel and the door frame in the locked state, thereby achieving a stable locking of the door.

[0004] The present application also provides a cabinet having the above cylindrical lock.

[0005] In addition, the present application also proposes an automation device having the above-mentioned cylinder lock.

[0006] According to a first aspect of an embodiment of the present invention, a cylindrical lock comprises a lock lining and a lock core; the lock lining is used to be fixedly inserted into a lock hole reserved in a door frame to realize the installation of the cylindrical lock, and the lock lining is provided with a circular groove along the axial direction; the lock core comprises a rotating shaft, a lock tongue and a shaft sleeve, wherein the rotating shaft is passed through the circular groove, and an eccentric shaft is provided at the tail end, the eccentric shaft is parallel to and offset to one side of the central axis of the rotating shaft, the shaft sleeve is sleeved on the tail end of the rotating shaft and is slidably connected to the lock lining along the axial direction, the lock tongue is slidably passed through the side wall of the shaft sleeve, and the lock tongue is provided with a connecting groove, the eccentric shaft is passed through the connecting groove and can slide in the connecting groove; a protrusion is provided on the inner circumferential surface of the shaft sleeve, and a spiral groove is provided on the circumferential surface of the rotating shaft, which is spirally arranged along the axis of the rotating shaft, and the protrusion is inserted into the spiral groove;

[0007] Under the rotation of the rotating shaft, the eccentric shaft can drive the lock tongue to slide in a direction perpendicular to the rotating shaft, thereby realizing unlocking or locking, and the spiral groove can push the protrusion and the sleeve along the axial direction of the rotating shaft, so that the lock tongue can move along the axial direction of the rotating shaft, thereby adjusting the distance between the lock tongue and the door panel.

[0008] The cylindrical lock according to the embodiment of the present invention has at least the following beneficial effects:

[0009] During the unlocking and locking process, the eccentric shaft will follow the rotation of the rotating shaft and drive the lock tongue to extend relative to the rotating shaft, so that in the use state, the lock tongue appears to be close to or away from the door panel, thereby realizing the locking and unlocking of the lock tongue; the embodiment of the present application also provides a spiral groove on the circumferential surface of the rotating shaft, and correspondingly, a protrusion is provided on the shaft sleeve that is plugged into the spiral groove. The spiral groove will follow the rotation of the rotating shaft and show a screw-in direction, specifically, it screws forward or backward along the axial direction of the rotating shaft. Since the protrusion is plugged into the spiral groove, the screw-in action can drive the lock tongue to move forward or backward in the axial direction of the rotating shaft. The designer can set the spiral direction of the spiral groove accordingly according to the actual unlocking direction, so that the lock tongue can be pressed against the door panel during the locking process, thereby reducing or even eliminating the gap between the door panel and the door frame, and improving the closing strength of the door in the locked state.

[0010] According to some embodiments of the present invention, the lock lining includes a lock shell and a connecting piece. The lock shell is provided with a shell plate and a shell cylinder. The shell plate is perpendicular to the shell cylinder and is provided at the end of the shell cylinder. The shell plate and the shell cylinder are provided with circular grooves along the same straight line. The shell cylinder is used to be inserted into the lock hole reserved in the door frame. The shell plate is fixedly connected to the door panel through the connecting piece to realize the installation of the cylindrical lock.

[0011] According to some embodiments of the present invention, a sliding groove perpendicular to the rotating shaft is provided at the tail of the sleeve, and the locking tongue is slidably arranged on the sliding groove.

[0012] According to some embodiments of the present invention, the shell plate is arranged in the head area of ​​the rotating shaft, and the lock tongue is arranged in the tail area of ​​the rotating shaft; the number of turns of the spiral groove is less than one turn, and the spiral groove is spirally arranged in the direction from the lock shell to the lock tongue. When the lock tongue is in the unlocked state where it extends out of the shaft sleeve by the longest distance, the protrusion is plugged into the groove end of the spiral groove away from the lock shell, so that the spiral groove can push the protrusion back in the direction close to the lock shell during the locking process, thereby driving the lock tongue to be pressed against the door panel through the shaft sleeve.

[0013] According to some embodiments of the present invention, an elastic member is provided on the circumference of the rotating shaft, and a plurality of spring grooves are recessed on the inner circumference of the sleeve in a direction away from the rotating shaft. When the rotating shaft rotates to a specified position, the elastic member can align with the spring groove and be inserted into the spring groove under the action of its own elastic force, thereby limiting the rotating shaft to a specified rotation angle.

[0014] According to some embodiments of the present invention, the elastic member includes a spring and a hard bead. The hard bead is connected to the rotating shaft via the spring, and the hard bead abuts against the inner circumference of the sleeve or the bottom of the elastic groove.

[0015] According to some embodiments of the present invention, the circumferential surface of the rotating shaft is provided with a shoulder surface perpendicular to the axis of the rotating shaft, the shoulder surface is provided on one side of the spiral groove and opposite to the plate surface of the shell plate, and an elastic washer is provided between the shoulder surface and the shell plate.

[0016] According to some embodiments of the present invention, the head end of the rotating shaft extends out of the shell plate, and the head end of the rotating shaft is connected to a handle.

[0017] The cabinet according to the second embodiment of the present application includes the cylindrical lock according to the first embodiment.

[0018] The automation equipment according to the third embodiment of the present application includes the cylindrical lock of the first embodiment.

[0019] The cabinet according to the second embodiment of the present application and the automation equipment according to the third embodiment have at least the following beneficial effects: including all the beneficial effects of the cylindrical lock of the first embodiment, which will not be repeated here.

[0020] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0022] Figure 1 This is a schematic structural diagram of a cylindrical lock according to an embodiment of the present invention;

[0023] Figure 2 This is an exploded schematic diagram of a cylindrical lock according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of an unlocked state according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic structural diagram of a rotating shaft according to an embodiment of the present invention;

[0026] Figure 5 For an embodiment of the present invention Figure 1 A-direction schematic diagram;

[0027] Figure 6 2 is a schematic structural diagram of a lock housing according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] Lock lining 100; lock housing 110; housing plate 111; housing cylinder 112; circular groove 113; hexagonal nut 120; positioning rib 140; positioning groove 150; lock core 200; rotating shaft 210; lock tongue 220; spiral groove 230; shoulder surface 240; insertion hole 250; eccentric shaft 260; sleeve 270; sleeve inner circumference 271; slide groove 280; connecting groove 290; protrusion 300; elastic member 400; spring 410; hard bead 420; spring groove 500; elastic washer 610; gasket 620; handle 700; column 800; decorative cover 900. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] See also Figure 1 According to the first embodiment of the present application, the cylindrical lock comprises a lock lining 100 and a lock core 200. The lock lining 100 is used to be fixedly inserted into a lock hole reserved in a door frame (such as a panel door frame of a workshop tool cabinet) to achieve the installation of the cylindrical lock; please refer to Figure 2 The lock lining 100 extends along the center line of the lock hole and is provided with a through hole 131 in the extending direction; the lock core 200 includes a rotating shaft 210, a lock tongue 220 and a sleeve 270, and the tail of the rotating shaft 210 is provided with an eccentric shaft 260 as shown in FIG. Figure 4 As shown, the eccentric shaft 260 is parallel to and offset to one side of the central axis of the rotating shaft 210, the sleeve 270 is sleeved on the tail of the rotating shaft 210, and can be slidably connected to the lock lining 100 along the axial direction, and a connecting groove 290 is provided on the lock tongue 220, and the eccentric shaft 260 is passed through the connecting groove 290 and can slide in the connecting groove 290; the tail of the sleeve 270 is provided with a sliding groove 280 perpendicular to the rotating shaft 210, and the lock tongue 220 is slidably connected to the sliding groove 280; under the rotation of the rotating shaft 210, the eccentric shaft 260 can drive the lock tongue 220 to slide in a direction perpendicular to the rotating shaft 210, which is specifically manifested as an extension relative to the rotating shaft 210. In use, the lock tongue 220 can be moved close to or away from the door panel, thereby achieving unlocking or locking.

[0036] A sleeve 270 is movably mounted on the rotating shaft 210 and slidably inserted into the through hole 131. A protrusion 300 is provided on the inner circumference 271 of the sleeve 270. A spiral groove 230 is provided on the circumference of the rotating shaft 210. The spiral groove 230 is spirally arranged along the axis of the rotating shaft 210, and the protrusion 300 is inserted into the spiral groove 230. Under the action of the rotation of the rotating shaft 210, the spiral groove 230 can push the protrusion 300 and the sleeve 270 along the axis of the rotating shaft 210, so that the lock tongue 220 can move along the axis of the rotating shaft 210, thereby adjusting the distance between the lock tongue 220 and the door panel.

[0037] See also Figure 3 Under the action of external torque unlocking torque or locking torque, the rotating shaft 210 and the spiral groove 230 will rotate. Since the protrusion 300 is plugged into the spiral groove 230, the screwing action can drive the lock tongue 220 to move forward or backward in the axial direction of the rotating shaft 210. According to such a structural setting, the lock tongue 220 will move back and forth relative to the door panel corresponding to the door frame during the unlocking and locking processes. The designer can set the spiral direction of the spiral groove 230 according to the actual unlocking direction, so that the lock tongue 220 can be pressed against the door panel during the locking process and leave the door panel during the unlocking process. On the basis of ensuring smooth unlocking, the door is tightly closed in the locked state.

[0038] See also Figure 5 Specifically, the lock lining 100 includes a lock housing 110 and a connecting piece. The lock housing 110 is provided with a shell plate 111 and a shell cylinder 112. The shell plate 111 is perpendicular to the shell cylinder 112 and is located at the end of the shell cylinder 112. The shell plate 111 and the shell cylinder 112 are provided with a circular groove 113 along the same straight line. The rotating shaft 210 is movably provided on the circular groove 113. The shell cylinder 112 is used to be inserted into the lock hole reserved in the door frame. The shell plate 111 is fixedly connected to the door panel through the connecting piece to realize the installation of the cylindrical lock. Please refer to Figure 5 In some embodiments, the connecting member is a hexagonal nut 120 , and a thread is provided on the outer circumference of the shell cylinder 112 . The hexagonal nut 120 is screwed to the shell cylinder 112 , thereby clamping the door panel between the hexagonal nut 120 and the shell plate 111 .

[0039] Regarding the sliding connection principle between the sleeve 270 and the circular groove 113, the sleeve 270 is provided with one or more positioning ribs 140 on its circumferential surface, and the inner circumferential surface of the shell 112 is provided with positioning grooves 150 corresponding to the positioning ribs 140. Figure 6 As shown, the positioning rib 140 is inserted into the positioning groove 150, and the positioning rib 140 and the positioning groove 150 extend along the axial direction of the shaft sleeve 270. According to this arrangement, the positioning rib 140 and the positioning groove 150 are equivalent to forming a guide assembly between the shell barrel 112 and the shaft sleeve 270, thereby achieving a sliding connection between the shell barrel 112 and the shaft sleeve 270 during the assembly of the fixed lock, which not only helps to improve the coaxiality between the shell barrel 112 and the shaft sleeve 270, but also limits the shaft sleeve 270 to be able to slide back and forth along the extension direction of the shell barrel 112.

[0040] The following further explains the principle of the locking tongue 220 rotating in the process of opening and closing the cylindrical lock. Figure 2 and Figure 3, since the protruding piece 300 is provided on the inner circumference of the shaft sleeve 270, and the shaft sleeve 270 is slidably connected to the shell cylinder 112, the protruding piece 300 can slide along the axial direction of the rotating shaft 210; on this basis, the number of turns of the spiral groove 230 is set to be less than one turn, for example, half a turn, and the spiral groove 230 extends in the direction away from the lock housing 110 from the lock tongue 220. When the lock tongue is in the unlocked state where the lock tongue extends out of the shaft sleeve 270 at the longest distance, the protruding piece 300 is plugged into the groove end of the spiral groove 230 away from the lock housing 110; according to the spiral direction of the spiral groove 230 and the protruding piece 300, the spiral groove 230 is connected to the groove end of the spiral groove 230 away from the lock housing 110. 00, during the locking process, the spiral groove 230 will push the protrusion 300 back in the direction close to the lock shell 110, thereby driving the lock tongue 220 to press against the door panel, thereby achieving a tight closure between the door panel and the door frame; the rotating shaft 210 and the lock tongue 220 will rotate in the direction close to the lock shell 110, thereby driving the lock tongue 220 to press against the door frame, thereby achieving a tight closure between the door panel and the door frame; during the unlocking process, as the rotating shaft 210 rotates in the opposite direction, the spiral groove 230 will push the protrusion 300 out in the direction away from the lock shell 110, thereby driving the lock tongue 220 to leave the door panel, thereby achieving smooth unlocking.

[0041] Among them, please see Figure 3 The protrusion 300 abuts against the two opposite side groove walls of the spiral groove 230. This arrangement can reduce the gap between the protrusion 300 and the spiral groove 230 in the axial direction of the rotating shaft 210, thereby further reducing the shaking of the rotating shaft 210 in the axial direction, which helps to further reduce the gap between the lock tongue 220 and the door frame.

[0042] The surface of the protrusion 300 and the groove surface of the spiral groove 230 are both rounded to reduce the risk of jamming when the protrusion 300 and the spiral groove 230 abut. Based on this principle, it is recommended that the protrusion 300 be a cylindrical member. Cylindrical members are easy to process and their outer circumference is smooth enough to well accommodate the screwing action of the spiral groove 230, reducing the risk of jamming. In some embodiments, the protrusion 300 is a pin, and the circumference of the sleeve 270 is provided with a pin hole. The pin is inserted into the pin hole and the end of the pin extends into the interior of the sleeve 270 and is inserted into the spiral groove 230.

[0043] Further, see Figure 2 The number of protrusions 300 can be set to more than two, each protrusion 300 is arranged on the same plane and is evenly arranged around the axis of the rotating shaft 210, and each protrusion 300 is correspondingly provided with a spiral groove 230. By increasing the number of protrusions 300 and spiral grooves 230, the movement smoothness of the spiral groove 230 and the rotating shaft 210 during the screwing process can be effectively enhanced.

[0044] It is understandable that the free rotation of the shaft 210 can easily affect the user experience, and in severe cases can even cause the cylinder lock to automatically unlock or lock, so it is necessary to set a positioning measure for the rotation of the shaft 210.

[0045] See also Figure 2 An elastic member 400 is provided on the circumferential surface of the rotating shaft 210, and a plurality of spring grooves 500 are recessed on the inner circumferential surface 271 of the sleeve 270 in a direction away from the rotating shaft 210. When the rotating shaft 210 rotates to a specified position, the elastic member 400 can align with the spring grooves 500 and be inserted into the spring grooves 500 under the action of its own elastic force, thereby limiting the rotating shaft 210 to a specified rotation angle.

[0046] Specifically, the elastic member 400 includes a spring 410 and a hard bead 420. The hard bead 420 is connected to the rotating shaft 210 via the spring 410. The inner circumferential surface 271 of the sleeve is provided with a spring groove 500 at positions corresponding to the initial placement angle of the rotating shaft 210 (here, the rotation angle of the rotating shaft 210 is 0°) and the maximum set rotation angle, such as 180°. When the rotating shaft 210 rotates between these two positions, the hard bead 420 abuts against the inner circumferential surface 271 of the sleeve, and the spring 410 is squeezed; when the rotating shaft 210 rotates to these two positions, the hard bead 420 aligns with the spring groove 500. Since the spring groove 500 is recessed on the inner circumferential surface 271 of the sleeve, the spring 410 can be extended at this position. Under the rebound action of the spring 410, the hard bead 420 is inserted into the spring groove 500 to limit further rotation of the rotating shaft 210. Since the spring 410 has a certain elasticity, when the rotating shaft 210 is subjected to a sufficiently large torsion force, the rotating shaft 210 can resume rotation, thereby repeatedly performing unlocking and locking.

[0047] The hard ball 420 may be a steel ball structure. The steel ball has a smooth surface and good wear resistance, and can adapt to repeated engagement and disengagement with the spring groove 500.

[0048] The circumference of the rotating shaft 210 is provided with a shoulder, which has a shoulder surface 240 perpendicular to the axis of the rotating shaft 210. The shoulder surface 240 is located on one side of the spiral groove 230 and abuts the plate surface of the shell 111. An elastic washer 610 is provided between the shoulder surface 240 and the lock housing 110. The elastic washer 610 can be a structure such as a wave washer. The elastic washer 610 can provide a buffering effect on the rotating shaft 210 in the axial direction of the rotating shaft 210. In addition to optimizing the rotation performance of the rotating shaft 210, it can also prevent the rotating shaft 210 from frequently rigidly colliding with the lock housing 110, which may cause improper use.

[0049] In some embodiments, the head end of the rotating shaft 210 extends out of the lock housing 110 and is connected to a handle 700. Specifically, a column 800 is provided at the end of the handle 700. The head of the rotating shaft 210 is provided with an insertion hole 250. The column 800 is movably inserted into the insertion hole 250, thereby enabling the handle 700 to be flipped relative to the rotating shaft 210. The column 800 is perpendicular to the rotating shaft 210. To unlock or lock the lock, the user flips the handle 700 around the axis of the column 800 away from the lock tongue 220, and then rotates the handle 700 around the axis of the rotating shaft 210 to unlock or lock the lock. After the lock is opened or closed, the handle 700 can be flipped toward the lock tongue 220 until the end surface of the handle 700 contacts the surface of the housing plate 111, thereby completing the storage of the handle 700.

[0050] Furthermore, a gasket 620 is sleeved on the rotating shaft 210 between the shell plate 111 and the handle 700 , and the gasket 620 is used to prevent the handle 700 or the column 800 from directly scraping the surface of the shell plate 111 .

[0051] Furthermore, the lock shell 110 can adopt a circular plate structure, and the handle 700 can adopt a semicircular flat plate structure. When the handle 700 is attached to the shell surface of the lock shell 110, the lock surface of the cylindrical lock can produce a consistent aesthetic feeling as a whole. The lock shell 110 can also be provided with a decorative cover 900 on one side of the handle 700. The decorative cover 900 is used to cover the main area of ​​the shell plate 111 except the handle 700, reduce the height difference between the shell plate 111 and the handle 700, and enhance the appearance of the cylindrical lock surface. It can also prevent the two ends of the column 800 from being exposed, making it difficult for the column 800 to be maliciously disassembled or loosened, which helps to improve the durability of the handle 700.

[0052] In addition, an embodiment of the present application further provides a cabinet on which the above-mentioned cylindrical lock is provided.

[0053] In addition, an embodiment of the present application further provides an automated device, on which the above-mentioned cylindrical lock is provided.

[0054] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A cylindrical lock, characterized in that: include: A lock lining portion, the lock lining portion is used to be fixedly inserted into a lock hole reserved in the door frame to realize the installation of the cylindrical lock, and the lock lining portion is provided with a circular groove along the axial direction; The lock core part includes a rotating shaft, a lock tongue and a sleeve; wherein, The rotating shaft is inserted into the circular groove, and an eccentric shaft is provided at the tail end, the eccentric shaft is parallel to and offset to one side of the central axis of the rotating shaft, the shaft sleeve is sleeved on the tail end of the rotating shaft and can be slidably connected to the locking liner along the axial direction, the tail end of the shaft sleeve is provided with a sliding groove perpendicular to the rotating shaft, the locking tongue can be slidably inserted into the sliding groove, and the locking tongue is provided with a connecting groove, the eccentric shaft is inserted into the connecting groove and can slide in the connecting groove; the inner circumference of the shaft sleeve is provided with a protrusion, and the circumference of the rotating shaft is provided with a spiral groove spirally arranged along the axis of the rotating shaft, and the protrusion is plugged into the spiral groove; Under the rotation of the rotating shaft, the eccentric shaft can drive the lock tongue to slide in a direction perpendicular to the rotating shaft, thereby realizing unlocking or locking, and the spiral groove can push the protrusion and the sleeve along the axial direction of the rotating shaft, so that the lock tongue can move along the axial direction of the rotating shaft, thereby adjusting the distance between the lock tongue and the door panel.

2. A cylindrical lock according to claim 1, characterized in that: The lock lining includes a lock shell and a connecting piece. The lock shell is provided with a shell plate and a shell cylinder. The shell plate is perpendicular to the shell cylinder and is provided at the end of the shell cylinder. The shell plate and the shell cylinder are provided with the circular groove along the same straight line. The shell cylinder is used to be inserted into the lock hole reserved in the door frame. The shell plate is fixedly connected to the door panel through the connecting piece to realize the installation of the cylindrical lock.

3. A cylindrical lock according to claim 2, characterized in that: The shell plate is arranged in the head area of ​​the rotating shaft, and the lock tongue is arranged in the tail area of ​​the rotating shaft; the number of turns of the spiral groove is less than one turn, and the spiral groove is spirally arranged in the direction from the lock shell to the lock tongue. When the lock tongue is in the unlocked state where it extends the longest distance from the shaft sleeve, the protrusion is plugged into the groove end of the spiral groove away from the lock shell, so that the spiral groove can push the protrusion back in the direction close to the lock shell during the locking process, thereby driving the lock tongue to be pressed against the door panel through the shaft sleeve.

4. The cylindrical lock according to claim 1, characterized in that: An elastic member is provided on the circumferential surface of the rotating shaft, and a plurality of spring grooves are recessed on the inner circumferential surface of the sleeve in a direction away from the rotating shaft. When the rotating shaft rotates to a specified position, the elastic member can align with the spring grooves and be inserted into the spring grooves under the action of its own elastic force, thereby limiting the rotating shaft to a specified rotation angle.

5. A cylindrical lock according to claim 4, characterized in that: The elastic member includes a spring and a hard bead. The hard bead is connected to the rotating shaft via the spring. The hard bead abuts against the inner circumference of the sleeve or the bottom of the elastic groove.

6. The cylindrical lock according to claim 2, characterized in that: The circumferential surface of the rotating shaft is provided with a shaft shoulder surface perpendicular to the axis of the rotating shaft. The shaft shoulder surface is provided on one side of the spiral groove and opposite to the plate surface of the shell plate, and an elastic washer is provided between the shaft shoulder surface and the shell plate.

7. A cylindrical lock according to claim 6, characterized in that: The head end of the rotating shaft extends out of the shell plate, and the head end of the rotating shaft is connected with a handle.

8. A cabinet, characterized in that: Comprising the cylindrical lock according to any one of claims 1 to 7.

9. An automated device, characterized in that: Comprising the cylindrical lock according to any one of claims 1 to 7.

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