CN110778226A - Lock set - Google Patents

Abstract

The invention relates to a lockset, which comprises a lockset bottom plate; the first lock hook is assembled on the lock bottom plate and comprises a guide groove; the second lock hook is assembled on the lock base plate, the second lock hook and the first lock hook are mutually matched to realize the opening and closing of the lock, and the second lock hook comprises a protrusion which can slide relatively in the guide groove; the first travel switch is matched with the second lock hook, the protrusion is separated from the guide groove when the lockset is in a locking position, the second lock hook triggers the first travel switch, and the protrusion is positioned in the guide groove and restrained by the guide groove when the lockset is in an unlocking position, so that the second lock hook is prevented from rotating and the first travel switch is triggered. The application provides a tool to lock sets up protruding and guide way of mutually supporting on two latch hooks, can trigger first travel switch when the tool to lock is dead in the lock completely, has effectively controlled the tool to lock appear postponing or the problem of responding in advance when the lock is dead or open, improves the security performance of tool to lock.

Description

Lock set

Technical Field

The invention relates to the field of electromechanical engineering, in particular to a lockset.

Background

With the development of internet technology, shared bicycles and shared moped which are raised in large and medium-sized cities all over the country are almost seen everywhere, and compared with public bicycles with piles, the shared bicycle without piles for taking and parking at any time brings great convenience to users. The tool to lock that uses on sharing bicycle, sharing vehicle using motor on the market at present is of a great variety, including mechanical lock and electronic lock, and wherein, the electronic lock is owing to can cooperate the internet to use, and user experience feels better, and its range of application is more extensive.

With the advent of the internet of things era, the dependence of people on networks is higher and higher, and electronic locks which are automatically controlled and can be started at any time through networks are more and more widely applied, but in the existing common electronic locks, errors exist in the matching of a mechanical part and an electronic part of a lock, and an instruction that the mechanical part of the lock is not completely locked and the electronic part is locked or an instruction that the mechanical part of the lock is not completely opened and the electronic part is unlocked often appears, so that the situation that a vehicle is stolen or cannot be used after the lock is unlocked finally caused.

At present, a lockset with simple structure, high safety performance and delayed or advanced response when the lockset is locked or unlocked is lacked.

Disclosure of Invention

Based on this, it is necessary to provide a lock for solving the problem that the lock is delayed or early responded when being locked or unlocked, so that the lock fails.

A lock comprises a lock base plate; the first lock hook is assembled on the lock bottom plate and comprises a guide groove; the second lock hook is assembled on the lock base plate, the second lock hook and the first lock hook are mutually matched to realize the opening and closing of the lock, and the second lock hook comprises a protrusion which can slide relative to the guide groove; the first travel switch is matched with the second lock hook, the protrusion is separated from the guide groove when the lock is in a locking position, the second lock hook triggers the first travel switch, and the protrusion is located in the guide groove and restrained by the guide groove when the lock is in an unlocking position, so that the second lock hook is prevented from rotating and the first travel switch is triggered.

Furthermore, the first lock hook further comprises a first clamping hook, and the first clamping hook and the guide groove are respectively positioned at two opposite sides of the rotating shaft of the first lock hook; the second lock hook further comprises a second clamping hook, the second clamping hook and the protrusion are respectively located on two opposite sides of the rotating shaft of the second lock hook, and the protrusion is separated from the guide groove when the first clamping hook and the second clamping hook are mutually buckled to form a lock catch.

Further, the second lock hook further comprises a connecting rod, the protrusion is arranged on the connecting rod, and when the second lock hook rotates, the bottom end of the connecting rod triggers or releases the first travel switch.

Further, a first biasing spring is arranged on the first lock hook, one end of the first biasing spring is connected with the first lock hook, the other end of the first biasing spring is fixed, and the first biasing spring maintains the first lock hook at the unlocking position; the second latch hook is provided with a second biasing spring, one end of the second biasing spring is connected with the second latch hook, the other end of the second biasing spring is fixed, and the second biasing spring maintains the second latch hook at a locking position.

Further, still include the locking piece, locking piece with the second latch hook cooperation is in order to open the tool to lock or prevent at the dead lock position that the tool to lock is opened.

Further, the locking piece is driven to rotate by the driving device when the first travel switch is closed.

Further, the lock member has a cam portion that prevents the second lock hook from rotating and releases the first stroke switch when the lock member is in the lock dead position.

Further, the second locking hook is provided with a bumper which can be in abutting fit with the cam part to prevent the second locking hook from rotating and release the first travel switch.

Further, still include second travel switch, the locking piece rotates to trigger when the dead lock position the second travel switch.

Further, the driving device stops the rotation of the locking piece when the second stroke switch is closed.

Further, the locking member has a push rod disposed at one axial side of the cam portion, and the push rod pushes the second locking hook to unlock the lock catch when the locking member rotates from the locking position to the releasing position.

According to the lockset provided by the application, the unlocking and locking functions are realized through the two lock hooks which are matched with each other, and when the two lock hooks rotate in opposite directions, the locking function can be realized; when the two lock hooks rotate oppositely, the unlocking function is realized, meanwhile, the two lock hooks are provided with the mutually matched bulges and the mutually matched guide grooves, so that the mutual matching of the two lock hooks is limited by the bulges and the guide grooves, and the lockset can be completely locked when the bulges are separated from the limitation of the guide grooves; in addition, when the lock is completely locked, the first travel switch can be triggered, so that the response sequence of the mechanical part and the electronic part of the lock is effectively controlled, and the electronic part is prevented from responding in advance or in a delayed mode when the mechanical part does not completely reach the preset position. The technical scheme that this application provided can cooperate the internet to use, and the lock of tool to lock dies and opens the restriction that receives two latch hook structures to the mechanical part and the electronic part response order of tool to lock have been injectd, thereby has prevented effectively that the tool to lock appears postponing or the problem of responding in advance when the lock dies or opens, improves the security performance of tool to lock, therefore has better market using value.

Various specific structures of the present application, as well as the functions and effects thereof, will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is an assembled partial perspective view of a lock according to one embodiment of the present application;

FIG. 2 is a perspective view of a first latch hook and a second latch hook of a latch according to an embodiment of the present application;

FIG. 3 is a perspective view of a locking member of a lock according to an embodiment of the present application;

FIG. 4 is a schematic view of a lock according to an embodiment of the present application in an unlocked position;

FIG. 5 is a schematic view of an embodiment of the present application showing a lock in a locked position, wherein the locking member locks the second locking hook;

fig. 6 is a schematic structural view of a lock according to an embodiment of the present application in a transitional state, in which the locking member releases the second locking hook.

Detailed Description

The technical solutions in the embodiments of the present application will be further clearly and completely described below with reference to the accompanying drawings, but it should be noted that the following embodiments are only some preferred embodiments in the present application, and do not refer to all embodiments covered by the technical solutions of the present application.

It should be noted that when an element is referred to as being "fixed" to another element in the description of the present application, it may be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 is an assembled partial perspective view of a lock according to an embodiment of the present invention, which includes a lock base 10, a first latch hook 20, a second latch hook 30, a locking member 40, a first travel switch 50, a second travel switch 60, and a driving device (not shown). In one embodiment, the drive means comprises a motor. The lock base plate 10 is a plate-like structure, is a part of or is installed in a lock housing (not shown), the lock base plate 10 is used for installing other components in the lock, and the first latch hook 20, the second latch hook 30, the locking member 40, the first travel switch 50 and the second travel switch 60 are assembled on the lock base plate 10.

Referring also to fig. 2, the first latch hook 20 is rotatably assembled to the latch base 10 by a rotating shaft 24 thereof, and the second latch hook 30 is rotatably assembled to the latch base 10 by a rotating shaft 34 thereof, and the latch is opened and closed by the cooperation of the first latch hook 20 and the second latch hook 30. The first latch hook 20 is provided with a guide groove 22, the second latch hook 30 is provided with a protrusion 32, the protrusion 32 on the second latch hook 30 can slide in the guide groove 22 on the first latch hook 20, and simultaneously the second latch hook 30 can trigger or release the first travel switch 50. In particular, when the lock is in the closed position, the protrusion 32 can disengage the guide slot 22 so that the second locking hook 30 can trigger the first travel switch 50; when the lock is in the unlocking position, the protrusion 32 can slide into the guide slot 22 and keep the first locking hook 20 and the second locking hook 30 in the unlocking position, and meanwhile, the protrusion 32 is restrained by the guide slot 22 so as to prevent the second locking hook 30 from rotating and trigger the first travel switch 50, so that the first travel switch 50 is kept in the off state.

Referring to fig. 2 and 3, the first latch hook 20 and the second latch hook 30 cooperate with each other to open and close the lock. When the first latch hook 20 and the second latch hook 30 are matched with each other to form a latch, the lock is in a locking position; when the first locking hook 20 and the second locking hook 30 are unlatched from each other, the lock is in the unlocked position. The locking member 40 is used to cooperate with the second locking hook 30 to further lock the lock when the lock is in the locking position, so as to prevent the lock from being opened abnormally. When the lock is unlocked, the user can input an unlocking instruction, for example, the user inputs the unlocking instruction through a mobile phone client, and the driving device drives the locking piece 40 to rotate, so that the lock is unlocked and the lock is opened.

Referring particularly to fig. 1 and 2, a first latch hook 20 is mounted on the latch base 10 and is rotatable about its own pivot axis 24. The first latch hook 20 is equipped with a first biasing spring 23. In one embodiment, the first biasing spring 23 is a torsion spring. The first biasing spring 23 is sleeved on the rotating shaft 24 of the first latch hook 20, and one end of the first biasing spring is clamped on the first latch hook 20, and the other end of the first biasing spring is fixed, such as clamped on a lock housing (not shown) or hooked on a lock pressing plate (not shown), so as to maintain the first latch hook 20 at an unlocking position after the lock is unlocked. Similarly, the second latch hook 30 is mounted on the latch base 10 and is rotatable about its own pivot axis 34. The second latch hook 30 is fitted with a second biasing spring 33. In one embodiment, the second biasing spring 33 is a torsion spring. The second biasing spring 33 is sleeved on the rotating shaft 34 of the second locking hook 30, and one end of the second biasing spring is clamped on the second locking hook 30, and the other end of the second biasing spring is fixed, for example, clamped on a lock casing (not shown) or hooked on a lock pressing plate (not shown). Unlike the first latch hook 20, the second biasing spring 33 of the second latch hook 30 serves to maintain the second latch hook 30 in the closed position after the latch is closed.

With reference to fig. 2, one end of the first lock hook 20 has a first hook 21, and the other end forms a guide slot 22, and the first hook 21 and the guide slot 22 are respectively located at two opposite sides of the rotating shaft 24 of the first lock hook 20. The guide groove 22 is arc-shaped, and one end is provided with an opening for the protrusion 32 to enter and exit. One end of the second locking hook 30 has a second hook 31, and the other end has a protrusion 32, and the second hook 31 and the protrusion 32 are respectively located on two opposite sides of a rotation shaft 34 of the second locking hook 30. The projection 32 is of cylindrical configuration with its axis perpendicular to the lock base plate 10. The second locking hook 30 is provided with a connecting rod 36, the connecting rod 36 and the second hook 31 are respectively located at two opposite sides of the rotating shaft 34 of the second locking hook 30, the protrusion 32 is arranged on the connecting rod 36, and when the second locking hook 30 rotates and the protrusion 32 slides relative to the guide slot 22, the protrusion 32 can slide in the guide slot 22 through the opening of the guide slot 22, so that the movement tracks of the first locking hook 20 and the second locking hook 30 can be guided to a certain extent. By arranging the structure of the guide groove 22 and the position relation of the guide groove and the protrusion 32, the bottom end of the connecting rod 36 cannot reach the first travel switch 50 during the sliding process of the protrusion 32 in the guide groove 22.

FIG. 3 illustrates a perspective view of a latch member according to an embodiment of the present application. Referring to fig. 1, the locking member 40 is assembled to the latch base 10 and is rotatable about a pivot axis 44. The locking member 40 can cooperate with the second locking hook 30 when rotating, preventing the lock from being opened in the locked position, and can cooperate to complete the unlocking function. With continued reference to fig. 3, in this embodiment, the locking member 40 includes two layers of upper and lower structures in the axial direction thereof, wherein the upper layer has a cam portion 41, the cam portion 41 is preferably made of wear-resistant material, the cam portion 41 is formed by combining a large semicircle 45 and a small semicircle 46, the radius of the large semicircle 45 is larger than that of the small semicircle 46, the plane of the cam portion 41 is perpendicular to the rotating shaft 44 of the locking member 40, and meanwhile, since the cam portion 41 has a certain thickness, a circumferential arc surface 42 with a certain length is formed along the circumferential direction of the large semicircle 45. The lower layer of the locking member 40 comprises a push rod 43, the push rod 43 is arranged on one axial side of the cam part 41, one end of the push rod 43 is connected to a rotating shaft 44 of the locking member 40, the other end of the push rod 43 points to the circumferential arc surface 42 of the large semicircle 45, and the length of the push rod 43 is smaller than the radius of the large semicircle 45.

The principle and process of locking the lock by the locking member 40 in one embodiment of the present application will be described below with reference to fig. 4-6. The first travel switch 50 is matched with the second locking hook 30, when a lock catch is formed between the first locking hook 20 and the second locking hook 30, the second locking hook 30 triggers the first travel switch 50, the locking member 40 rotates to a position for locking the second locking hook 30 under the action of the driving device, meanwhile, the second travel switch 60 can be triggered, and the locking member 40 stops rotating after the second travel switch 60 is triggered. When the lock is to be unlocked, the locking member 40 is rotated by the driving device and pushes the second locking hook 30 to rotate in the unlocking direction until the second travel switch 60 is released.

Fig. 4 is a schematic structural diagram of a lock according to an embodiment of the present application in an unlocking position, in which the first locking hook 20 and the second locking hook 30 are both in the corresponding unlocking positions, and the locking member 40 is in a release position where the second locking hook 30 is not locked. Specifically, the first lock hook 20 is maintained in the unlocked position by its own first biasing spring 23. The second biasing spring 33 of the second locking hook 30 has a tendency to rotate the second locking hook 30 toward the closed position, but the engagement of the guide groove 22 of the first locking hook 20 with the projection 32 of the second locking hook 30 overcomes the force of the second biasing spring 33 of the second locking hook 30, thereby holding the second locking hook 30 in the unlocked position.

When the lock is closed, for example, the first locking hook 20 is pressed by an external force to rotate in the direction of the second locking hook 30, or the first locking hook 20 and the second locking hook 30 are driven by other mechanical devices to rotate, so that the first hook 21 of the first locking hook 20 and the second hook 31 of the second locking hook 30 are engaged with each other, thereby closing the lock. In the illustrated preferred embodiment, the first locking hook 20 is pressed by an external force to rotate towards the second locking hook 30, the first hook 21 pushes the second hook 31 to reversely rotate the second locking hook 30 until the first hook 21 on the first locking hook 20 and the second hook 31 on the second locking hook 30 form a snap-fit state, and at this time, the second locking hook 30 rotates to the locking position under the action of the second biasing spring 33, so as to ensure that the first locking hook 20 and the second locking hook 30 reach the locking position. Further, during the rotation of the first locking hook 20, the protrusion 32 of the second locking hook 30 slides in the guiding groove 22 of the first locking hook 20, and when the first locking hook 20 and the second locking hook 30 are locked, the protrusion 32 is separated from the guiding groove 22, and thus the second locking hook 30 is separated from the limit of the guiding groove 22, and can rotate under the action of the second biasing spring 33 to trigger the first travel switch 50.

Preferably, the first travel switch 50 is triggered to close by the bottom end of the link 36 on the second locking hook 30, and then the driving device is controlled by the control circuit to drive the locking member 40 to rotate. When the circumferential arc surface 42 of the cam portion 41 on the lock member 40 triggers the second travel switch 60, the second travel switch 60 is closed, and the control circuit controls the driving device to stop rotating, so that the lock member 40 is kept at a locking position and the second locking hook 30 is prevented from releasing the first travel switch 50, as shown in fig. 5. In this locked position, the large semicircle 45 of the cam portion 41 is located below the bumper 35 on the second locking hook 30, and thus abuts against the bumper 35 to prevent the second locking hook 30 from rotating to the unlocked position in case the latch receives an abnormally applied external force, and to prevent the second locking hook 30 from releasing the first stroke switch 50. Further, when the lock receives an unlocking instruction, if the user inputs the unlocking instruction through the client, the driving device drives the locking member 40 to rotate, so that the second locking hook 30 is released from abutting.

In the embodiment shown in fig. 4 to 6, the engagement of the first hook 21 and the second hook 31 is released by the rotation of the lock member 40. Referring also to fig. 3, a push rod 43 is provided at a lower stage of the locking member 40, and the push rod 43 may be fixed to a rotation shaft 44 of the locking member 40 or to the cam portion 41 so as to rotate along with the locking member 40 during rotation of the locking member 40. When the lock receives an unlocking instruction, the driving device drives the locking member 40 to rotate, that is, when the locking member 40 rotates from the locking position shown in fig. 5 to the unlocking position shown in fig. 4, the push rod 43 of the locking member 40 can abut against the bottom end of the second locking hook 30, specifically referring to fig. 6, at this time, the push rod 43 rotates and pushes the second locking hook 30 to rotate in a direction away from the first locking hook 20, so that the second locking hook 30 rotates around the rotating shaft 34 until the first hook 21 and the second hook 31 are unlocked and the first travel switch 50 is released, and simultaneously, the cam portion 41 of the locking member 40 leaves the bumper 35 of the second locking hook 30 to release the locking of the second locking hook 30. When the first hook 21 and the second hook 31 are released, the first lock hook 20 can be automatically returned to the unlocking position by the first biasing spring 23. Meanwhile, after the first locking hook 20 rotates to the unlocking position, the protrusion 32 on the second locking hook 30 is guided and limited by the guide groove 22 of the first locking hook 20, so that the second locking hook 30 cannot return to the locking position under the action of the second biasing spring 33, and therefore the first travel switch 50 cannot be triggered and the lock cannot be kept at the unlocking position.

In the embodiment provided by the present application, the push rod 43 of the locking member 40 is L-shaped, and pushes the second locking hook 30 to open the lock, and based on the same principle, those skilled in the art can design other types of structures, so that the push rod 43 of the locking member 40 pushes the first locking hook 30 to rotate until the first hook 21 and the second hook 31 are unlocked, thereby opening the lock.

After the first hook 21 and the second hook 31 are unlocked, the locking member 40 continues to keep rotating under the action of the driving device, and in the rotating process of the locking member 40, the circumferential arc surface 42 on the large semicircle 45 of the cam portion 41 keeps contacting with the second travel switch 60 until the large semicircle 45 of the cam portion 41 is separated from the second travel switch 60, at this time, the second travel switch 60 is released, that is, the second travel switch 60 is changed from the closed state to the open state, the driving device is controlled by the control circuit to stop rotating, so that the locking member 40 stops rotating, at this time, the lock is in the unlocking position shown in fig. 4, and the lock is kept in the unlocking position by the matching of the guide groove 22 of the first lock hook 20 and the protrusion 32 of the second lock hook 30.

In the above-described embodiment, the cam portion 41 of the locking member 40 cooperates with the second locking hook 30 to lock the lock, so that the lock is prevented from being abnormally opened due to external force in the locked position. Furthermore, according to other embodiments of the present application, the locking member 40 may not be limited to the cam structure, and it only needs to be driven by the driving device to realize the engagement with the two locking hooks and prevent the abnormal rotation of the locking hooks. Meanwhile, the locking of the second locking hook 30 is not limited to be realized by the above-described cooperation of the bumper 35 using the second locking hook 30 and the locking member 40, and other forms of abutment are allowed by the present application.

Furthermore, the locking member 40 is not limited to cooperate with the second locking hook 30 to realize a dead lock as described above, but may selectively cooperate with the first locking hook 20 or the second locking hook 30 or cooperate with both of the first locking hook 20 and the second locking hook 30 according to the specific structure and cooperation manner of the first locking hook 20 or the second locking hook 30, so long as the locking hook can be prevented from being opened by an abnormal external force, which belongs to the embodiments disclosed and protected in the present application.

According to the lockset provided by the application, the unlocking and locking functions are realized through the two lock hooks which are matched with each other, and when the two lock hooks rotate in opposite directions, the locking function can be realized; when the two lock hooks rotate oppositely, the unlocking function is realized. Meanwhile, the two lock hooks are provided with the mutually matched protrusion and the guide groove, so that the mutual matching of the two lock hooks is limited by the protrusion and the guide groove, and the lock can be completely locked when the protrusion is separated from the limitation of the guide groove; in addition, when the lock is completely locked, the first travel switch can be triggered, so that the response sequence of the mechanical part and the electronic part of the lock is effectively controlled, and the electronic part is prevented from responding in advance or in a delayed mode when the mechanical part does not completely reach the preset position. The technical scheme that this application provided can cooperate the internet to use, and the lock of tool to lock dies and opens the restriction that receives two latch hook structures to the mechanical part and the electronic part response order of tool to lock have been injectd, thereby has prevented effectively that the tool to lock appears postponing or the problem of responding in advance when the lock dies or opens, improves the security performance of tool to lock, therefore has better market using value.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (11)

1. A lock, comprising:

a lockset floor;

the first lock hook is assembled on the lock bottom plate and comprises a guide groove;

the second lock hook is assembled on the lock base plate, the second lock hook and the first lock hook are mutually matched to realize the opening and closing of the lock, and the second lock hook comprises a protrusion which can slide relative to the guide groove;

the first travel switch is matched with the second lock hook, the protrusion is separated from the guide groove when the lock is in a locking position, the second lock hook triggers the first travel switch, and the protrusion is located in the guide groove and restrained by the guide groove when the lock is in an unlocking position, so that the second lock hook is prevented from rotating and the first travel switch is triggered.

2. The lock according to claim 1, wherein the first latch further comprises a first hook, and the first hook and the guide groove are respectively located on two opposite sides of a rotating shaft of the first latch; the second lock hook further comprises a second clamping hook, the second clamping hook and the protrusion are respectively located on two opposite sides of the rotating shaft of the second lock hook, and the protrusion is separated from the guide groove when the first clamping hook and the second clamping hook are mutually buckled to form a lock catch.

3. The lock according to claim 2, wherein said second latch hook further comprises a link, said protrusion is disposed on said link, and said link bottom end triggers or releases said first travel switch when said second latch hook rotates.

4. The lock according to claim 2, wherein a first biasing spring is disposed on said first latch hook, said first biasing spring having one end connected to said first latch hook and the other end fixed, said first biasing spring maintaining said first latch hook in said unlocked position; the second latch hook is provided with a second biasing spring, one end of the second biasing spring is connected with the second latch hook, the other end of the second biasing spring is fixed, and the second biasing spring maintains the second latch hook at a locking position.

5. The lock of claim 1, further comprising a lock member that cooperates with the second shackle to open the lock or to prevent the lock from being opened in a deadlocked position.

6. The lock according to claim 5, further comprising a drive device that drives rotation of said locking member when said first travel switch is closed.

7. The lock according to claim 6, wherein said lockout member has a cam portion that prevents rotation of said second lock hook and releases said first travel switch when said lockout member is in said lockout position.

8. The lock according to claim 7, wherein said second latch hook is provided with a bumper abuttingly engageable with said cam portion to prevent rotation of said second latch hook and release said first travel switch.

9. The lock of claim 7, further comprising a second travel switch, wherein rotation of the locking member to the deadlocked position triggers the second travel switch.

10. The lock of claim 9, wherein the drive means stops rotation of the locking member when the second travel switch is closed.

11. The lock according to claim 10, wherein said lock member has a push rod disposed on one side of said cam portion in the axial direction, said push rod pushing said second latch hook to unlock said latch when said lock member is rotated from said deadlocking position toward said releasing position.

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