Knob lock and power-assisted bicycle

Abstract

The utility model discloses a knob formula lock and power-assisted bicycle belongs to power-assisted bicycle technical field. Knob formula lock includes lock body and lock core, and lock body includes knob piece and rolling part, and one end of lock body is connected in first to be locked spare, and one end of lock core is connected with ball head, and the other end of lock core is connected second to be connected spare, under the first to be locked spare and second to be connected spare lock -up state, ball head is configured to with rolling part and is connected, knob piece is configured as knob knob piece to release rolling part and ball head to unlock first to be locked spare and second to be connected spare. The knob formula lock adopts the knob locking mode of ball head, and it is easier to lock when locking, so that the assembly of whole knob formula lock is more simple and easy, can guarantee the operation reliability of locking and unlocking.

Description

Technical Field

[0001] This utility model relates to the field of power-assisted bicycle technology, and in particular to a knob lock and a power-assisted bicycle. Background Technology

[0002] Currently, push-pull locks require aligned push-pull to lock and unlock. However, the alignment push-pull method results in a smaller tolerance for assembly errors, making the entire assembly of push-pull locks quite difficult. Furthermore, the alignment push-pull process is easily affected by dimensional tolerances, making locking and unlocking difficult and resulting in poor reliability of locking and unlocking operations. In addition, current push-pull locks are usually quite complex and not aesthetically pleasing.

[0003] To address the above issues, there is an urgent need to develop a rotary lock and electric bicycle that can change the unlocking / locking method to ensure better operational reliability. Utility Model Content

[0004] The purpose of this utility model is to propose a knob-type lock and an electric bicycle, which is relatively simple to assemble, can ensure good reliability of locking and unlocking operations, and has a good appearance.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A rotary lock, comprising:

[0007] The lock body includes a knob and a rolling element, one end of which is connected to the first lockable element;

[0008] The lock cylinder has a ball head connected to one end and a second component to be connected to the other end.

[0009] When the first lockable component and the second connectable component are locked, the ball head is configured to engage with the rolling component, and the knob is configured to be turned to release the rolling component and the ball head, thereby unlocking the first lockable component and the second connectable component.

[0010] As an optional solution, the lock body further includes:

[0011] The housing and the inner base are provided. The housing is connected to the first locking member. The knob is rotatably disposed on the housing about the Z-axis. One end of the inner base is connected to the housing. The rolling element is disposed between the inner base and the knob.

[0012] As an optional solution, the knob includes:

[0013] A cylindrical base, wherein an inner wall surface of the cylindrical base is recessed to form a clearance groove, and at least a portion of the inner base is disposed within the cylindrical base so that the rolling element is disposed correspondingly to the clearance groove;

[0014] A cylindrical protrusion is provided at the top of the cylindrical base along the Z-axis.

[0015] As an optional feature, the top surface of the cylindrical protrusion is provided with an operating groove.

[0016] As an optional solution, a first limiting shoulder is formed at the connection position between the cylindrical base and the cylindrical protrusion, and the first limiting shoulder is used to abut against and limit the top end of the inner base.

[0017] As an optional solution, a second limiting shoulder is formed inside the housing, which is used to limit and abut against the top surface of the cylindrical base.

[0018] As an optional solution, the inner base includes:

[0019] A disc base is detachably connected to the housing;

[0020] A cylindrical seat protrudes upward along the Z-axis onto the disc base and is coaxially connected to the disc base along the Z-axis. The lock cylinder can pass through the disc base and slide into the cylindrical seat. The cylindrical seat is provided with a through hole, and the rolling element is disposed in the through hole.

[0021] As an optional solution, the cylindrical base is provided with at least two through holes, each of the through holes being evenly distributed along the circumference of the cylindrical base, and a rolling element is slidably disposed in one of the through holes.

[0022] As an optional solution, the lock body further includes:

[0023] The first limiting post is connected at intervals on the bottom end face of the cylindrical base, and the first limiting post extends toward the top end of the disc base.

[0024] The second limiting post is connected at intervals on the top surface of the disc base. The second limiting post extends toward the bottom end of the cylindrical base, and a first limiting post is provided between the two second limiting posts.

[0025] The first elastic element has one end connected to a second limiting post, and the other end wrapped around the cylindrical seat and connected to a first limiting post.

[0026] As an optional solution, the lock body further includes:

[0027] The second elastic element extends along the Z-axis, and one end of the second elastic element abuts against the inner top wall of the knob. The second elastic element is configured to push the ball head to move downward along the Z-axis, so that the ball head pushes the rolling element to slide radially along the cylindrical seat within the through hole.

[0028] The guide member is slidably disposed within the inner base along the Z-axis, the other end of the lock cylinder is fitted and abutted against the guide member, and the other end of the second elastic member is limited and abutted against the guide member.

[0029] As an optional solution, the guide includes:

[0030] Circular base;

[0031] An annular protrusion is protruding upward along the Z-axis onto the annular base. The other end of the second elastic element is limited and abuts against the annular protrusion. The inner wall surface of the annular base is an arc-shaped annular surface, and the ball head fits and abuts against the arc-shaped annular surface.

[0032] As an optional feature, the knob is provided with an alignment mark, and the housing is provided with an open mark and a close mark. When the knob is rotated, the alignment mark is aligned with the open mark or the close mark.

[0033] As an optional feature, the top end of the cylindrical boss extends upward along the Z-axis outside the housing, and the top end face of the cylindrical boss is provided with the alignment mark.

[0034] An electric bicycle includes a first lockable component and a second lockable component, and a rotary lock for locking the first lockable component and the second lockable component, the rotary lock including the rotary lock described above.

[0035] The beneficial effects of this utility model are as follows:

[0036] With the first lockable component and the second connectable component locked, the ball head is configured to engage with the rolling component; and the knob is configured to release the rolling component and the ball head by turning it, thereby unlocking the first lockable component and the second connectable component. This ball-head type knob locking method allows the ball head to act as a guide, eliminating the need for alignment and pushing / pulling to unlock and lock. Only rotation of the knob around the Z-axis is required, resulting in greater assembly tolerance and easier locking, unlike push-pull locks which require precise positioning. This simplifies the assembly of the knob lock. Furthermore, the knob's operation is less affected by dimensional tolerances, making locking and unlocking simpler and more convenient, thus improving reliability. Finally, the aforementioned cooperative structure results in a simple and aesthetically pleasing overall appearance for the knob lock. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the electric bicycle provided by this utility model (the first locking component is covered on the lower side of the second locking component);

[0038] Figure 2 This is a schematic diagram of the structure of the first locking element, the second locking element, and the rotary lock (the first locking element is covered on the upper side of the second locking element) provided by this utility model;

[0039] Figure 3 This is a schematic diagram of the structure of the rotary lock (in the unlocked state) provided by this utility model. Figure 1 ;

[0040] Figure 4 This is a partially exploded structural diagram of the knob-type lock (in the unlocked state) provided by this utility model;

[0041] Figure 5 This is a schematic diagram of the structure of the rotary lock provided by this utility model (in the unlocked state, with the housing and rotary knob removed). Figure 2 ;

[0042] Figure 6 This is a partially exploded structural diagram of the lock body provided by this utility model;

[0043] Figure 7 This is a structural schematic diagram of the knob component provided by this utility model;

[0044] Figure 8 This is a schematic diagram of the structure of the shell provided by this utility model;

[0045] Figure 9 This is a schematic diagram of the structure of the inner base provided by this utility model;

[0046] Figure 10 This is a schematic diagram of the lock cylinder provided by this utility model;

[0047] Figure 11 This is a structural schematic diagram of the guide component provided by this utility model.

[0048] Explanation of reference numerals in the attached figures:

[0049] 10 - First lockable component; 20 - Second lockable component;

[0050] 1-Lock cylinder; 11-Ball head;

[0051] 2-Lock body; 21-Shell; 211-Second limit shoulder; 212-Open indicator; 213-Closed indicator; 22-Knob; 221-Cylindrical base; 2211-Allowing groove; 222-Cylindrical protrusion; 2221-Operating groove; 2222-Alignment indicator; 2223-Anti-slip rib; 223-First limit shoulder; 23-Inner base; 231-Disc base; 2311-Connecting plug Pin; 232-Cylindrical seat; 2321-Through hole; 2322-Annular abutment; 2323-Annular groove; 2324-Arc-shaped surface; 24-Rolling element; 251-First limiting post; 252-Second limiting post; 26-First elastic element; 27-Second elastic element; 28-Guide element; 281-Annular base; 2811-Arc-shaped annular surface; 282-Annular protrusion; 283-Third limiting shoulder. Detailed Implementation

[0052] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0053] Any feature disclosed in this specification, unless specifically stated otherwise, may be replaced by other equivalent or similar features. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features. Throughout this specification, the same reference numerals indicate the same elements.

[0054] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0055] like Figure 1 and Figure 2 As shown, this embodiment proposes a rotary lock and an electric bicycle including the rotary lock. The electric bicycle also includes a first locking element 10 and a second locking element 20. The rotary lock is used to lock the first locking element 10 and the second locking element 20.

[0056] Specifically, such as Figure 1 and Figure 2As shown, in this embodiment, one of the first locking component 10 and the second locking component 20 can be the frame or battery holder of the electric bicycle, and the other can be the battery cover of the electric bicycle; that is, the lock cylinder 1 can be connected to the frame or battery holder, and the lock body 2 is set on the battery cover; or the lock cylinder 1 can be set on the battery cover, and the lock body 2 can be set on the frame or battery holder; that is, the battery holder is set inside the frame, the battery holder is used to install the battery, the battery is used to provide electric power to the entire electric bicycle, and the battery cover is set opposite to the frame or battery holder, so that the battery cover can be locked to the frame or battery holder by the knob lock, so that the battery cover provides a shielding and protection function for the battery.

[0057] Specifically, such as Figures 3 to 7 As shown, the rotary lock includes a lock body 2 and a lock cylinder 1. The lock body 2 includes a knob 22 and a rolling element 24. One end of the lock body 2 is connected to a first lockable component 10. One end of the lock cylinder 1 is connected to a ball head 11, and the other end of the lock cylinder 1 is connected to a second lockable component 20. When the first lockable component 10 and the second lockable component 20 are locked, the ball head 11 is configured to engage with the rolling element 24, and the knob 22 is configured to be turned to release the rolling element 24 and the ball head 11, thereby unlocking the first lockable component 10 and the second lockable component 20. Specifically, the rolling element 24 can be a steel ball. The lock cylinder 1 and the second lockable component 20, as well as the housing 21 and the first lockable component 10, can be connected by threads.

[0058] Compared with the prior art, the knob-type lock in this embodiment changes the specific locking structure and locking method between the first lockable component 10 and the second lockable component 20. With the first lockable component 10 and the second connector 20 locked, the ball head 11 is configured to engage with the rolling element 24. The knob 22 is configured to be turned to release the rolling element 24 and the ball head 11, thereby unlocking the first lockable component 10 and the second connector 20. Using the aforementioned ball-head type knob locking method, the ball head 11 has a guiding function, eliminating the need for alignment and pushing / pulling to achieve unlocking and locking. The knob only requires rotating the knob 22 around the Z-axis, which allows for a larger tolerance in assembly and makes locking easier. Unlike push-pull locks, it does not require precise positioning for locking, making the assembly of the knob lock simpler and easier. Furthermore, since the rotation of the knob 22 is not easily affected by dimensional tolerances, the locking and unlocking operations are simple and convenient, resulting in better reliability. At the same time, the use of the above-mentioned cooperative structure for unlocking and locking makes the overall appearance of the knob lock simple and aesthetically pleasing.

[0059] In other words, during the entire locking and unlocking process, only the knob 22 needs to be rotated around the Z-axis without any other additional operations, making the locking and unlocking of the second lockable part 20 and the first lockable part 10 simple and quick, thereby improving work efficiency.

[0060] Furthermore, such as Figures 3 to 7 As shown, the lock body 2 also includes a housing 21 and an inner base 23. The housing 21 is connected to the first lockable member 10. The knob member 22 is rotatably mounted on the housing 21 around the Z-axis. One end of the inner base 23 is connected to the housing 21. The rolling member 24 is located between the inner base 23 and the knob member 22. The inner base 23 and the housing 21 can also be integrally formed.

[0061] Specifically, when the knob 22 is rotated to a preset angle, the ball head 11 moves downward along the Z-axis, pushing the rolling element 24 radially outward along the inner base 23. This causes the rolling element 24 to slide into the clearance groove of the knob 22, releasing the limiting and blocking effect of the rolling element 24 on the ball head 11. This allows the lock cylinder 1 to smoothly disengage from the inner base 23, thus unlocking the first lockable element 10 and the second lockable element 20. When the knob 22 is rotated to its reset position, the ball head 11 moves upward along the Z-axis within the inner base 23. The ball head 11 is released from its blocking effect on the rolling element 24, allowing the rolling element 24 to disengage from the relief groove and abut against the inner wall of the knob 22. Under the abutment of the inner wall of the knob 22, the rolling element 24 slides radially inward along the inner base 23, enabling the rolling element 24 to provide a blocking and limiting effect for the ball head 11 to move along the Z-axis. This prevents the ball head 11 and the lock cylinder 1 from disengaging from the inner base 23 along the Z-axis downward, thereby achieving the locking between the first locking element 10 and the second locking element 20.

[0062] The knob component 22 is described in detail below:

[0063] Furthermore, such as Figures 3 to 7 As shown, the knob 22 includes a cylindrical base 221 and a cylindrical boss 222; wherein, the cylindrical base 221 is placed inside the housing 21, and the bottom end of the cylindrical base 221 is an open end, and the inner wall surface of the cylindrical base 221 is recessed to form the aforementioned clearance groove 2211, and at least a portion of the inner base 23 is disposed inside the cylindrical base 221 through the open end of the cylindrical base 221, so that the rolling element 24 on the inner base 23 is correspondingly disposed with the clearance groove 2211 in the cylindrical base 221, that is, it can be ensured that the rolling element 24 and the clearance groove 2211 are located on the same horizontal annular circumferential surface; the cylindrical boss 222 protrudes upward along the Z-axis from the top end of the cylindrical base 221, and the top end of the cylindrical boss 222 extends upward along the Z-axis outside the housing 21.

[0064] like Figure 3 and Figure 7 As shown, an operating groove 2221 is provided on the top surface of the cylindrical boss 222, allowing the knob 22 to be rotated by inserting a rotating tool into the operating groove 2221. This makes rotating the knob 22 simple, convenient, time-saving, and labor-saving. Furthermore, anti-slip ribs 2223 are provided on the outer circumferential surface of the cylindrical boss 222 to increase the friction when gripping the cylindrical boss 222, thus facilitating manual gripping and rotation of the knob 22. In other words, the knob 22 can be rotated using both a rotating tool and manual gripping, offering good flexibility and compatibility. In this embodiment, the operating groove 2221 can specifically be a slotted groove, and the rotating tool can be matched with the operating groove 2221.

[0065] Furthermore, such as Figure 7 As shown, the cylindrical base 221 and the cylindrical boss 222 are an integral structure to ensure the stability of the connection between the cylindrical base 221 and the cylindrical boss 222; and the interior of the cylindrical base 221 and the interior of the cylindrical boss 222 are coaxially connected along the Z-axis, which facilitates the insertion of the inner base 23 inside the cylindrical base 221 and the installation of other structures inside the cylindrical boss 222.

[0066] Specifically, such as Figure 7 As shown, a first limiting shoulder 223 is formed in an annular arrangement at the connection position between the cylindrical base 221 and the cylindrical protrusion 222. The first limiting shoulder 223 is used to abut against the top of the inner base 23 to ensure the positional accuracy and stability of the inner base 23 within the cylindrical base 221.

[0067] Furthermore, such as Figure 8 As shown, a second limiting shoulder 211 is formed in a ring shape inside the housing 21. The second limiting shoulder 211 is used to limit and abut against the top surface of the cylindrical base 221 to ensure the position accuracy and stability of the knob 22 inside the housing 21.

[0068] Furthermore, such as Figure 3 and Figure 4 As shown, the knob 22 is provided with an alignment mark 2222, and the housing 21 is provided with an open mark 212 and a close mark 213. When the knob 22 is rotated, the alignment mark 2222 aligns with the open mark 212 or the close mark 213.

[0069] Specifically, such as Figure 3 and Figure 4As shown, rotating the knob 22 aligns its alignment mark 2222 with the open mark 212 on the housing 21. The rolling element 24 slides radially outward along the inner base 23 into the clearance groove 2211 of the knob 22, allowing the lock cylinder 1 to disengage from the inner base 23, and the knob lock is in an unlocked state. Aligning the alignment mark 2222 on the knob 22 with the closed mark 213 on the housing 21, the rolling element 24 disengages from the clearance groove 2211 and slides radially inward along the inner base 23 under the abutment of the inner wall of the knob 22, preventing the ball head 11 and the lock cylinder 1 from disengaging from the inner base 23.

[0070] By aligning the alignment mark 2222 on the knob 22 with the closed mark 213 or open mark 212 on the housing 21, locking and unlocking operations can be achieved, thus ensuring good foolproof operation of the entire knob lock. Specifically, the closed mark 213 and the open mark 212 can be dots of different colors for easy identification and differentiation.

[0071] Furthermore, such as Figures 3 to 7 As shown, the top end of the cylindrical boss 222 extends upward along the Z-axis outside the housing 21. The aforementioned alignment mark 2222 is provided on the top surface of the cylindrical boss 222. That is, a part of the cylindrical boss 222 is located inside the housing 21, and the other part of the cylindrical boss 222 is located outside the housing 21. Specifically, the alignment mark 2222 can be a colored dot.

[0072] The inner base 23 is described in detail below:

[0073] Furthermore, such as Figures 3 to 6 , Figure 9 As shown, the inner base 23 includes a disc base 231 and a cylindrical base 232; wherein, the disc base 231 is detachably connected to the housing 21, and the bottom end face of the disc base 231 is flush with the bottom end face of the housing 21, so as to avoid the disc base 231 interfering with the installation of the housing 21 on the first lockable member 10, and to ensure the smooth installation of the housing 21 on the first lockable member 10; the cylindrical base 232 protrudes upward along the Z-axis on the disc base 231 and is coaxially connected with the disc base 231 along the Z-axis, so that the other end of the lock cylinder 1 can pass through the disc base 231 upward along the Z-axis and slide into the cylindrical base 232; a through hole 2321 is provided on the cylindrical base 232, and the above-mentioned rolling element 24 is slidably provided in the through hole 2321 along the radial direction of the cylindrical base 232. The disc base 231 and the cylindrical base 232 are an integral structure to ensure the stability of the connection between the disc base 231 and the cylindrical base 232.

[0074] Specifically, such as Figures 3 to 6 , Figure 8 , Figure 9As shown, the bottom end of the housing 21 is also an open end, ensuring that the other end of the lock cylinder 1 can pass through the open end of the housing 21 along the Z-axis, pass through the disc base 231, and slide into the cylindrical seat 232. A connecting pin 2311 is connected to the outer circumferential surface of the disc base 231. The connecting pin 2311 is used to insert into the socket of the housing 21 to achieve a detachable connection between the disc base 231 and the housing 21. Specifically, two connecting pins 2311 are symmetrically connected to the outer circumferential surface of the disc base 231. Correspondingly, one connecting pin 2311 is inserted into one socket of the housing 21 to better ensure the stability and reliability of the connection between the disc base 231 and the housing 21.

[0075] Furthermore, by making the disc base 231 and the housing 21 detachably connected, the assembly and connection between the disc base 231 and the housing 21 can be made simple and convenient; and the damaged disc base 231 or housing 21 can be quickly maintained and replaced, making the maintenance of the entire knob lock simple and quick.

[0076] Furthermore, such as Figure 5 , Figure 6 and Figure 9 As shown, at least three through holes 2321 are provided on the cylindrical base 232. Each through hole 2321 is evenly distributed along the circumference of the cylindrical base 232, and a rolling element 24 slides within each through hole 2321. This allows the evenly distributed rolling elements 24 to simultaneously and uniformly provide a blocking limit for the downward movement of the lock cylinder 1 along the Z-axis, thereby better ensuring the locking stability and reliability of the rotary lock. In this embodiment, three through holes 2321 are provided on the cylindrical base 232, and correspondingly, three rolling elements 24 are provided. The specific number of through holes 2321 and rolling elements 24 is not limited here, as long as one rolling element 24 slides within each through hole 2321.

[0077] The following describes the other structures of lock body 2:

[0078] Furthermore, such as Figures 4 to 6As shown, the lock body 2 also includes a first limiting post 251, a second limiting post 252, and a first elastic element 26; wherein, two first limiting posts 251 are connected at intervals on the bottom end face of the cylindrical base 221, and the first limiting posts 251 extend toward the top end of the disc base 231; two second limiting posts 252 are connected at intervals on the top end face of the disc base 231, and the second limiting posts 252 extend toward the bottom end of the cylindrical base 221, the specific position of one second limiting post 252 corresponds to the open mark 212, and the specific position of the other second limiting post 252 corresponds to the closed mark 213, and... A first limiting post 251 is provided between the two second limiting posts 252. That is, a first limiting post 251 is provided at a certain distance between the two second limiting posts 252 in the circumferential direction of the cylindrical seat 232, and another first limiting post 251 is provided at another distance between the two second limiting posts 252. One end of the first elastic member 26 is connected to a second limiting post 252, and the other end of the first elastic member 26 is wrapped around the cylindrical seat 232 and connected to a first limiting post 251, thereby limiting the rotation of the entire knob 22 between the open mark 212 and the closed mark 213. In this embodiment, the first elastic member 26 can specifically be a telescopic spring.

[0079] By setting a first limiting post 251 and a second limiting post 252 that mutually limit each other, with one of the two second limiting posts 252 located at the open mark 212 of the housing 21 and the other located at the close mark 213 of the housing 21, the first limiting post 251 and the second limiting post 252 are positioned to limit each other when the knob 22 is rotated until the alignment mark 2222 on it is aligned with the close mark 213 or the open mark 212 on the housing 21. This ensures the accuracy and stability of the knob 22's position at the closed and open indicators 213 and 212; furthermore, it allows the bottom end of the first limiting post 251 to rest on the top surface of the disc base 231, and the top end of the second limiting post 252 to contact the bottom surface of the cylindrical base 221. This provides support and limitation for the cylindrical base 221 through the two first limiting posts 251 and the two second limiting posts 252, thereby ensuring the stability and positional accuracy of the entire knob 22 along the Z-axis. Specifically, as... Figures 4 to 6 As shown, an annular groove 2323 is recessed on the outer circumferential surface of the cylindrical seat 232. The first elastic element 26 is limited and positioned in the annular groove 2323 to provide a limiting and guiding effect for the stretching and rebound of the first elastic element 26, ensuring that the first elastic element 26 stretches and rebounds more accurately in the annular groove 2323.

[0080] Furthermore, such as Figures 4 to 6As shown, the lock body 2 also includes a second elastic member 27 and a guide member 28; wherein, the second elastic member 27 extends along the Z-axis, and one end of the second elastic member 27 abuts against the inner top wall of the cylindrical protrusion 222 of the knob member 22; the guide member 28 is slidably disposed in the cylindrical seat 232 of the inner base 23 along the Z-axis, and the other end of the lock cylinder 1 is fitted against the guide member 28, and the other end of the second elastic member 27 is limited to abutting against the guide member 28; wherein, the second elastic member 27 can push the guide member 28 downward along the Z-axis, so that the guide member 28 pushes the rolling member 24 to slide radially outward along the inner base 23 into the relief groove 2211 during the downward movement along the Z-axis, that is, at this time, a part of the rolling member 24 is limited in the relief groove 2211, and the other part of the rolling member 24 is limited in the through hole 2321; and, the guide member 28 can also push the lock cylinder 1 downward along the Z-axis to disengage it from the inner base 23. In this embodiment, the second elastic element 27 can specifically be a telescopic spring.

[0081] Specifically, such as Figures 3 to 5 , Figure 10 As shown, when the knob 22 is rotated until the alignment mark 2222 on it aligns with the opening mark 212 on the housing 21, the rolling element 24 and the clearance groove 2211 in the cylindrical base 221 are directly opposite each other. This causes the elastic force of the second elastic element 27 to automatically push the guide 28 downwards along the Z-axis. As the guide 28 moves downwards along the Z-axis, it pushes the rolling element 24 to slide radially outwards along the cylindrical base 232 into the clearance groove 2211. This completely separates the rolling element 24 from the ball head 11 of the lock cylinder 1, allowing the lock cylinder 1 to move freely along the Z-axis within the inner base 23 to disengage, thus unlocking the second lockable component and the first lockable component. At this time, the second elastic element 27 is in a free state. Simultaneously, the rotation of the knob 22 can synchronously stretch the end of the first elastic element 26 connected to the first limiting post 251. That is, the stretch of the first elastic element 26 is at its maximum at this time, and it cannot be stretched any further. At this time, as... Figure 5 As shown, the two first limiting posts 251 respectively limit and abut against the two second limiting posts 252 in the direction of the knob, and the rolling element 24 is limited in the clearance groove 2211. That is, at this time, a part of the rolling element 24 is limited in the clearance groove 2211, and the other part of the rolling element 24 is limited in the through hole 2321. Since the inner base 23 and the rolling element 24 in the through hole 2321 will not rotate, the two second limiting posts 252 and the rolling element 24 together restrict the knob 22 from continuing to rotate, so that the knob 22 always remains at the open mark 212.

[0082] Specifically, when the ball head 11 of the lock cylinder 1 is inserted upward along the Z-axis into the cylindrical seat 232 again, the ball head 11 of the lock cylinder 1 abuts against the guide member 28, and the lock cylinder 1 can push the guide member 28 upward along the Z-axis to compress the second elastic member 27, so that the guide member 28 and the second elastic member 27 are reset; at the same time, since the force of the guide member 28 pushing the rolling member 24 radially outward along the inner base 23 is released, the rolling member 24 can have space and tendency to move radially inward along the inner base 23; at this time, the first elastic member 26 can drive the knob member 22 to automatically rotate and reset around the Z-axis, so that the rolling member 24 is completely aligned with the clearance groove 2211. The knob 22 and the roller 24 are disengaged and abut against the inner wall of the cylindrical base 221, thereby automatically resetting the knob 22 and the roller 24. At this time, the alignment mark 2222 on the knob 22 is aligned with the closing mark 213 on the housing 21 to achieve automatic locking between the second lockable part and the first lockable part. No additional separate operation is required to reset the knob 22 and the roller 24, making the automatic reset of the knob 22 and the roller 24 simple and convenient, saving time and effort. In addition, a first limiting post 251 abuts against a second limiting post 252 in the reset rotation direction to limit the knob 22 from continuing to reset and rotate, so that the knob 22 is always kept at the closing mark 213.

[0083] Furthermore, such as Figure 11 As shown, the guide member 28 includes an annular base 281 and an annular boss 282; wherein, the annular boss 282 protrudes upward along the Z-axis on the annular base 281, and the other end of the second elastic member 27 is limited and abuts against the inside of the annular boss 282; so as to limit the second elastic member 27 to abut against the inner top wall of the cylindrical boss 222 and the guide member 28.

[0084] Specifically, such as Figure 11 As shown, a third limiting shoulder 283 is formed in a ring shape at the connection position between the annular base 281 and the annular protrusion 282. The third limiting shoulder 283 is used to abut against the other end of the second elastic member 27 to ensure the positional accuracy and stability of the second elastic member 27 within the guide member 28.

[0085] Furthermore, such as Figure 11 As shown, the inner wall of the annular base 281 is an arc-shaped annular surface 2811. The ball head 11 of the lock cylinder 1 fits against the arc-shaped annular surface 2811 to ensure a tight fit between the ball head 11 of the lock cylinder 1 and the annular base 281. This helps to ensure the timeliness and synchronicity of the guide member 28 in pushing the lock cylinder 1 to move. Here, the specific arc size and arc structure of the arc-shaped annular surface 2811 are not limited, as long as it can ensure that the ball head 11 of the lock cylinder 1 fits tightly against the arc-shaped annular surface 2811.

[0086] Specifically, such as Figure 9 and Figure 11 As shown, an annular abutment 2322 protrudes from the inner base 23. The bottom end of the annular protrusion 282 can abut against the annular abutment 2322 downward along the Z-axis to provide a limiting effect on the guide member 28. At this time, the annular base 281 completely separates the rolling member 24 from the ball head 11 of the lock cylinder 1. The ball head 11 of the lock cylinder 1 only abuts against the arc-shaped annular surface 2811 of the annular base 281, so that the lock cylinder 1 can slide freely along the Z-axis within the inner base 23. Wherein, as... Figure 10 As shown, the size of the ball head 11 of the lock cylinder 1 is the maximum size of the lock cylinder 1.

[0087] Specifically, such as Figure 9 As shown, part of the annular abutment 2322 is connected to the through hole 2321, and the annular abutment 2322 is located at the bottom end of the through hole 2321. The part of the annular abutment 2322 connected to the through hole 2321 is an arc-shaped surface 2324 to avoid interference of the annular abutment 2322 with the radial sliding of the rolling element 24 in the through hole 2321, thereby ensuring the smoothness of the radial movement of the rolling element 24 along the cylindrical seat 232.

[0088] The specific working process of the knob lock in this embodiment is as follows:

[0089] To unlock, rotate the knob 22 until the alignment mark 2222 on it aligns with the open mark 212 on the housing 21:

[0090] First, the knob 22 is rotated around the Z-axis to rotate the clearance groove 2211 so that it is directly opposite the rolling element 24. Under the elastic action of the second elastic element 27, the guide element 28 is automatically pushed downward along the Z-axis. As the annular base 281 moves downward along the Z-axis, it pushes the rolling element 24 to slide radially outward along the cylindrical seat 232 into the clearance groove 2211. This causes the annular base 281 to completely separate the rolling element 24 from the ball head 11 of the lock cylinder 1. At this time, a part of the rolling element 24 is confined in the clearance groove 2211, and the other part of the rolling element 24 is confined in the through hole 2321. This allows the lock cylinder 1 to move freely along the Z-axis within the inner base 23 to disengage. At this time, the second elastic element 27 is in a free state. This unlocks the inner base 23 and the lock cylinder 1, thereby unlocking the second lockable element 20 and the first lockable element 10.

[0091] During the rotation of the knob 22 around the Z-axis, the knob 22 drives the two first limiting posts 251 on it to be limited and abut against the two second limiting posts 252 in the knob direction, and causes the rolling member 24 to limit the knob 22 to ensure that the knob 22 is kept in the position of the open mark 212. At this time, the first elastic member 26 has the maximum stretch.

[0092] When it is necessary to relock:

[0093] First, the ball head 11 of the lock cylinder 1 is inserted upward along the Z-axis into the cylindrical seat 232 again. At this time, the ball head 11 of the lock cylinder 1 abuts against the arc-shaped annular surface 2811 of the annular base 281. The lock cylinder 1 can push the guide member 28 upward along the Z-axis to compress the second elastic member 27, so that the guide member 28 and the second elastic member 27 automatically reset. At the same time, the force of the guide member 28 on the rolling member 24 pushing it radially outward along the inner base 23 is released, so that the rolling member 24 has a radial force along the inner base 23. The space and tendency for radial inward movement; at this time, the first elastic element 26 can drive the entire knob 22 to automatically rotate and reset around the Z-axis, so that the rolling element 24 completely disengages from the clearance groove 2211 in the knob 22 and abuts against the inner wall surface of the cylindrical base 221, so as to automatically reset the knob 22 and the rolling element 24. At this time, the alignment mark 2222 on the knob 22 is aligned with the closing mark 213 on the housing 21, so as to realize the automatic locking between the second lockable element and the first lockable element.

[0094] During the automatic reset and locking process of the knob 22 rotating around the Z-axis, the knob 22 drives a first limiting post 251 on it to abut against a second limiting post 252 in the reset rotation direction to limit the knob 22 and keep it stable at the position of the closed mark 213; at this time, the first elastic member 26 rebounds to a stretch of about 20%.

[0095] In this embodiment, the rotary lock achieves rotary locking / unlocking by setting a lock cylinder 1 and a lock body 2 that cooperate with each other. This allows for a large tolerance in assembly, making the assembly of the entire rotary lock simple and easy. Furthermore, the rotation of the knob 22 is not easily affected by dimensional tolerances, making locking and unlocking operations simple and convenient, thus ensuring good reliability of locking and unlocking operations. At the same time, the alignment mark 2222 on the knob 22 is aligned with the closed mark 213 or open mark 212 on the housing 21 to achieve locking and unlocking operations, ensuring good foolproof operation of the entire rotary lock. Moreover, when the ball head 11 of the lock cylinder 1 is reinserted into the inner base 23, the knob 22, the rolling element 24, the guide element 28, and the second elastic element 27 can be automatically reset, thereby achieving automatic locking of the ball head 11 of the lock cylinder 1 and the inner base 23, realizing automated locking.

[0096] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A rotary lock, characterized in that, include: The lock body (2) includes a knob (22) and a rolling element (24), one end of which is connected to the first lockable element (10); The lock cylinder (1) has a ball head (11) connected to one end and a second component (20) connected to the other end. When the first locking member (10) and the second connecting member (20) are locked, the ball head (11) is configured to engage with the rolling member (24), and the knob (22) is configured to rotate the knob (22) to release the rolling member (24) and the ball head (11) to unlock the first locking member (10) and the second connecting member (20).

2. The rotary lock as described in claim 1, characterized in that, The lock body (2) also includes: The housing (21) and the inner base (23) are connected to the first locking member (10), the knob (22) is rotatably disposed on the housing (21) around the Z-axis, one end of the inner base (23) is connected to the housing (21), and the rolling member (24) is disposed between the inner base (23) and the knob (22).

3. The rotary lock as described in claim 2, characterized in that, The knob (22) includes: A cylindrical base (221) has an inner wall surface that is recessed to form a relief groove (2211). At least a portion of the inner base (23) is disposed within the cylindrical base (221) so that the rolling element (24) is disposed correspondingly to the relief groove (2211). A cylindrical protrusion (222) is projected upward along the Z-axis at the top of the cylindrical base (221).

4. The rotary lock as described in claim 3, characterized in that, The top surface of the cylindrical protrusion (222) is provided with an operating groove (2221).

5. The rotary lock as described in claim 3, characterized in that, A first limiting shoulder (223) is formed at the connection position between the cylindrical base (221) and the cylindrical protrusion (222), and the first limiting shoulder (223) is used to abut against and limit the top end of the inner base (23).

6. The rotary lock as described in claim 3, characterized in that, A second limiting shoulder (211) is formed inside the housing (21), which is used to limit and abut against the top surface of the cylindrical base (221).

7. The rotary lock as described in any one of claims 3-6, characterized in that, The inner base (23) includes: The disc base (231) is detachably connected to the housing (21); A cylindrical seat (232) protrudes upward along the Z-axis onto the disc base (231) and coaxially communicates with the disc base (231) along the Z-axis. The lock cylinder (1) can pass through the disc base (231) and slide into the cylindrical seat (232). The cylindrical seat (232) is provided with a through hole (2321), and the rolling element (24) is provided in the through hole (2321).

8. The rotary lock as described in claim 7, characterized in that, The cylindrical seat (232) is provided with at least two through holes (2321), each through hole (2321) is evenly distributed along the circumference of the cylindrical seat (232), and a rolling element (24) is slidably disposed in one of the through holes (2321).

9. The rotary lock as described in claim 7, characterized in that, The lock body (2) also includes: The first limiting post (251) is connected at intervals to the bottom end face of the cylindrical base (221), and the first limiting post (251) extends toward the top end of the disc base (231). The second limiting post (252) is connected at intervals on the top surface of the disc base (231). The second limiting post (252) extends toward the bottom end of the cylindrical base (221), and a first limiting post (251) is provided between the two second limiting posts (252). The first elastic element (26) has one end connected to a second limiting post (252) and the other end wrapped around the cylindrical seat (232) and connected to a first limiting post (251).

10. The rotary lock as described in claim 7, characterized in that, The lock body (2) also includes: The second elastic element (27) extends along the Z-axis, and one end of the second elastic element (27) abuts against the inner top wall of the knob (22). The second elastic element (27) is configured to push the ball head (11) to move downward along the Z-axis, so that the ball head (11) pushes the rolling element (24) to slide radially along the cylindrical seat (232) within the through hole (2321). The guide member (28) is slidably disposed within the inner base (23) along the Z-axis. The other end of the lock cylinder (1) is fitted and abutted against the guide member (28). The other end of the second elastic member (27) is limited and abutted against the guide member (28).

11. The rotary lock as described in claim 10, characterized in that, The guide (28) includes: Annular base (281); An annular protrusion (282) protrudes upward along the Z-axis onto the annular base (281). The other end of the second elastic member (27) is limited and abuts against the annular protrusion (282). The inner wall surface of the annular base (281) is an arc-shaped annular surface (2811), and the ball head (11) fits against the arc-shaped annular surface (2811).

12. The rotary lock as described in claim 3 or 4, characterized in that, The knob (22) is provided with an alignment mark (2222), and the housing (21) is provided with an open mark (212) and a close mark (213). When the knob (22) is rotated, the alignment mark (2222) is aligned with the open mark (212) or the close mark (213).

13. The rotary lock as described in claim 12, characterized in that, The top end of the cylindrical boss (222) extends upward along the Z-axis outside the housing (21), and the top end face of the cylindrical boss (222) is provided with the alignment mark (2222).

14. A power-assisted bicycle, characterized in that, It includes a first lockable element (10) and a second lockable element (20), and a rotary lock for locking the first lockable element (10) and the second lockable element (20), the rotary lock including the rotary lock as claimed in any one of claims 1-13.

Images