Auxiliary lock and one-piece lock
By designing a limiting member between the lock tongue and the lock shell of the secondary lock, the problem of the slanting of the traditional joint lock secondary lock is solved, and the smooth movement and stable extension of the lock tongue are achieved, reducing the risk of collision with the door frame.
Patent Information
- Application Number
- CN202420495523.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-03-14
AI Technical Summary
The secondary lock tongue of the traditional joint lock is prone to tilt during the extension process, causing collision with the door frame and causing damage.
A secondary lock is designed, and its locking tongue includes a tongue body and a connecting plate. The connecting plate is slidably arranged in the lock shell. The limiting member is connected through the angle between the first side plate and the second side plate, and is provided with a limiting groove and an opening. The connecting plate and the limiting groove are slidably cooperated to reduce the slant of the locking tongue.
Through the design of the limiting element, the lock tongue can move smoothly along the width of the lock shell, reducing the slant, reducing the chance of the lock tongue colliding with the door frame, and extending the service life of the lock.
Smart Images
Figure CN222615030U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of locks, in particular to a secondary lock and a connected lock. Background Art
[0002] A one-piece lock usually includes a main lock and one or two secondary locks. The main lock can be operated to drive the lock tongue of the secondary lock to extend or retract. During the locking process of a traditional one-piece lock, the lock tongue of the secondary lock may swing left and right when extended, thereby colliding with the door frame, causing damage to the lock tongue and door frame, which needs to be improved. Utility Model Content
[0003] The purpose of the embodiments of the present utility model is to provide a secondary lock and a combined lock to solve the above problems.
[0004] The embodiments of the present utility model achieve the above-mentioned purpose through the following technical solutions.
[0005] In a first aspect, the utility model provides a secondary lock, comprising:
[0006] A lock housing, the lock housing having a width direction;
[0007] A lock tongue, the lock tongue comprising a tongue body and a connecting plate, the connecting plate being movably disposed in the lock housing, the tongue body being fixedly connected to one end of the connecting plate and being able to extend or retract relative to the lock housing along a width direction of the lock housing; and
[0008] A limiting member, wherein the limiting member is fixed in the lock housing, and the limiting member comprises a first side plate and a second side plate connected at an angle, the first side plate being provided with a first limiting groove, the first limiting groove extending along the width direction of the lock housing, the connecting plate slidingly cooperates with the first limiting groove, and the second side plate being provided with an opening for the tongue to extend out.
[0009] In one embodiment, the limiting member also includes a third side plate, the plane where the third side plate is located is parallel to and spaced from the plane where the first side plate is located, the second side plate is connected between the first side plate and the third side plate, the third side plate is provided with a second limiting groove extending along the width direction of the lock housing, and the connecting plate is slidably matched with the second limiting groove.
[0010] In one embodiment, the first side panel includes a first outer surface and a first inner surface opposite to each other, the first outer surface is farther away from the third side panel than the first inner surface, the first limiting groove passes through the first inner surface and the first outer surface, and the connecting plate is passed through the first limiting groove and extends outward.
[0011] In one embodiment, the lock shell also has a thickness direction, which is perpendicular to the width direction. The second side plate includes a first opening surface and a second opening surface, and the first opening surface and the second opening surface are spaced along the thickness direction of the lock shell to form the opening. The second side plate also includes a limiting protrusion, which protrudes from the first opening surface or the second opening surface toward the opening. The tongue body is provided with a limiting groove, and when the tongue body extends relative to the lock shell, the limiting protrusion cooperates with the limiting groove.
[0012] In one embodiment, the limiting protrusion has a first limiting surface located in the opening, the first limiting surface is connected to the first opening surface or the second opening surface, and the tongue body has a second limiting surface forming the limiting groove, wherein: the first limiting surface and the second limiting surface are both arc-shaped surfaces, and the first limiting surface can be adapted to contact with the second limiting surface.
[0013] In one embodiment, the lock tongue has a maximum extension position relative to the lock housing, and when the lock tongue is at the maximum extension position, the orthographic projection of the first limiting surface on the lock tongue is at least partially located within the range of the second limiting surface.
[0014] In one embodiment, the lock housing also has a length direction perpendicular to the width direction, and the secondary lock also includes a transmission plate and a toggle assembly, wherein the toggle assembly is rotatably arranged in the lock housing, and the toggle assembly is transmission connected to the lock tongue to toggle the lock tongue to extend or retract relative to the lock housing; the transmission plate is movably arranged in the lock housing and can move along the length direction of the lock housing, and the transmission plate is transmission connected to the toggle assembly to drive the toggle assembly to toggle the lock tongue to extend or retract relative to the lock housing.
[0015] In one embodiment, the transmission plate is provided with a plurality of first gear teeth, and the plurality of first gear teeth are arranged in sequence along the length direction of the lock housing. The toggle assembly includes a fixedly connected rotating gear and a lock tongue paddle, the rotating gear and the lock tongue paddle are stacked, the lock tongue paddle is transmission-connected to the connecting plate, the rotating gear is provided with a plurality of second gear teeth, and the plurality of second gear teeth are arranged in sequence along the axial direction of the rotating gear, and the plurality of first gear teeth are meshed with the plurality of second gear teeth.
[0016] In one embodiment, the connecting plate is provided with a guide groove, the extension direction of the guide groove is inclined relative to the width direction and the length direction, and a guide column is provided on the side of the lock tongue paddle away from the rotating gear, and the guide column passes through the guide groove.
[0017] In a second aspect, the utility model also provides a one-piece lock, which includes a main lock, a connecting rod and any one of the above-mentioned secondary locks, wherein the connecting rod is connected between the main lock and the secondary lock so that the main lock can drive the lock tongue of the secondary lock to extend or retract.
[0018] The utility model provides a secondary lock and a combined lock, wherein the lock tongue comprises a tongue body and a connecting plate, the connecting plate is movably arranged in a lock shell, the tongue body is fixed to one end of the connecting plate, and can extend or retract relative to the lock shell along the width direction of the lock shell; a limiting member is fixed in the lock shell, the limiting member comprises a first side plate and a second side plate connected at an angle, the first side plate is provided with a first limiting groove, the first limiting groove extends along the width direction of the lock shell, the connecting plate is slidably matched with the first limiting groove, and the second side plate is provided with an opening for the tongue body to extend. In this way, through the sliding match between the connecting plate and the first limiting groove, the first limiting groove extends along the width direction of the lock shell, so that the first side plate of the limiting member can limit the lock tongue, the lock tongue can smoothly move along the width direction of the lock shell, and the movement of the lock tongue in other directions is reduced, thereby reducing the deflection of the lock tongue during the extension or retraction process, which is beneficial to the adaptation of the lock tongue to the door frame, thereby reducing the probability of the lock tongue of the secondary lock colliding with the door frame when extending.
[0019] These and other aspects of the present invention will be more clearly understood in the description of the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 It is a structural schematic diagram of the auxiliary lock provided by the utility model when the lock tongue is in the maximum retracted position.
[0022] Figure 2 yes Figure 1 The schematic diagram of the structure of the lock tongue and the limiting member of the secondary lock is shown.
[0023] Figure 3 yes Figure 1 A schematic structural diagram of the limiting member of the secondary lock is shown.
[0024] Figure 4 yes Figure 1 The schematic diagram of the structure of the secondary lock with the lock shell removed is shown.
[0025] Figure 5 It is a structural schematic diagram of the auxiliary lock provided by the utility model when the lock tongue is at the maximum extended position (excluding the cover plate).
[0026] Figure 6 yes Figure 5 A front view of the secondary lock is shown.
[0027] Figure 7 yes Figure 6 Cross-sectional view along the AA direction.
[0028] Figure 8 It is a structural schematic diagram of the one-piece lock provided by the utility model. DETAILED DESCRIPTION
[0029] In order to facilitate the understanding of the embodiments of the present invention, the embodiments of the present invention will be described more comprehensively with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the embodiments of the present invention are only for the purpose of describing specific implementations and are not intended to limit the present invention.
[0031] The inventor of the utility model discovered that, in the process of extending the lock tongue of the secondary lock of the conventional one-piece lock relative to the lock housing, there is no limiter to limit the position of the lock tongue, which causes the lock tongue to swing. When the one-piece lock has been used for a long time, the amplitude of the swing is particularly obvious. The swing of the lock tongue can easily cause the lock tongue to collide with the door frame, thereby causing damage to the lock tongue and the door frame.
[0032] To this end, the utility model provides a secondary lock and a combined lock, through the cooperation between the first limiting groove on the first side plate of the limiting member and the connecting plate of the lock tongue, the limiting member can limit the movement of the lock tongue, reduce the swing of the lock tongue during the extension or retraction process, thereby facilitating the adaptation of the lock tongue to the door frame. In the following, in combination with the specific implementation and the drawings of the specification, the secondary lock and the combined lock provided by the utility model are described in detail.
[0033] See also Figure 1 and Figure 2The utility model provides a secondary lock 10, which includes a lock shell 11, a lock tongue 13 and a limiting member 15. The lock shell 11 has a width direction D1; the lock tongue 13 includes a tongue body 132 and a connecting plate 134, the connecting plate 134 is movably arranged in the lock shell 11, the tongue body 132 is fixedly connected to one end of the connecting plate 134, and can extend or retract relative to the lock shell 11 along the width direction D1 of the lock shell 11; the limiting member 15 is fixed in the lock shell 11, and the limiting member 15 includes a first side plate 151 and a second side plate 152 connected at an angle, the first side plate 151 is provided with a first limiting groove 1512, the first limiting groove 1512 extends along the width direction D1 of the lock shell 11, the connecting plate 134 is slidably matched with the first limiting groove 1512, and the second side plate 152 is provided with an opening 1520 for the tongue body 132 to extend.
[0034] Specifically, the lock housing 11 has a width direction D1, a length direction D2 and a thickness direction D3, wherein the length direction D2 and the thickness direction D3 are both perpendicular to the lock housing 11, and the length direction D2 is perpendicular to the thickness direction D3. In the present embodiment, the lock housing 11 is a substantially hollow rectangular parallelepiped structure. The lock housing 11 includes a bottom housing 112 and a cover plate 114 disposed on the bottom housing 112, the bottom housing 112 and the cover plate 114 enclose a receiving cavity 116, and the receiving cavity 116 can be used for the lock tongue 13, the stopper 15 and other structures. The cover plate 114 can be fixed to the bottom housing 112 by screws (not shown), and can also be fixed to the bottom housing 112 by bonding or welding.
[0035] The lock tongue 13 has a maximum extended position relative to the lock housing 11, and also has a maximum retracted position relative to the lock housing 11, wherein the maximum extended position of the lock tongue 13 refers to the lock tongue 13 being unable to continue to extend relative to the lock housing 11 due to limitation during the extension process, for example, the lock tongue 13 is limited by the limiting member 15; the maximum retracted position of the lock tongue 13 refers to the lock tongue 13 being unable to continue to retract relative to the lock housing 11 due to limitation during the retraction process.
[0036] The tongue 132 is fixed to one end of the connecting plate 134, and can extend or retract relative to the lock housing 11 along the width direction D1 of the lock housing 11. In this embodiment, the tongue 132 is a substantially rectangular plate-shaped structure, and the thickness of the tongue 132 gradually decreases along the extending direction of the tongue 132. In other embodiments, the thickness of the tongue 132 may also remain unchanged along the extending direction of the tongue 132.
[0037] The connecting plate 134 is movably disposed in the lock housing 11. The connecting plate 134 is generally a rectangular plate structure, and the length of the connecting plate 134 is greater than the length of the tongue 132, so that the lock body is generally in a "T" shape. The thickness of the connecting plate 134 is less than the thickness of the tongue 132 near the connecting plate 134.
[0038] The connecting plate 134 is provided with a guide groove 1341, and the extension direction of the guide groove 1341 is inclined relative to the width direction D1 and the length direction D2. By setting the guide groove 1341, the connecting plate 134 can be guided to move along the width direction D1 of the lock shell 11, so that the tongue 132 can extend or retract relative to the lock shell 11.
[0039] Please also read Figures 3 to 5 The limiting member 15 is fixed in the lock housing 11 and can limit the lock tongue 13 so that the limiting member 15 can only move along the width direction D1 of the lock housing 11 but cannot move along other directions, thereby preventing the lock tongue 13 from swinging during the extension process.
[0040] The limiting member 15 includes a first side plate 151 and a second side plate 152 connected at an angle. The first side plate 151 is provided with a first limiting groove 1512, which extends along the width direction D1 of the lock housing 11 and is a substantially rectangular groove. The connecting plate 134 is slidably matched with the first limiting groove 1512, so that the first side plate 151 of the limiting member 15 can limit the lock tongue 13, and the lock tongue 13 can smoothly move along the width direction D1 of the lock housing 11, while reducing the movement of the lock tongue 13 in other directions, thereby reducing the deflection of the lock tongue 13, and further reducing the probability of the lock tongue 13 of the secondary lock 10 colliding with the door frame when extending. In addition, the limiting member 15 also includes a third side plate 153, the plane where the third side plate 153 is located is parallel to and spaced from the plane where the first side plate 151 is located, and the second side plate 152 is connected between the first side plate 151 and the third side plate 153. In this embodiment, the connection angle between the first side plate 151 and the second side plate 152 is 90°, so that the limiting member 15 is substantially a “U”-shaped plate structure.
[0041] The first side plate 151 includes a first outer surface 1514 and a first inner surface 1516 facing each other. The first outer surface 1514 is farther away from the third side plate 153 than the first inner surface 1516, that is, the first inner surface 1516 is the surface of the first side plate 151 close to the third side plate 153, and the first inner surface 1516 is also the inner surface of the stopper 15; the first outer surface 1514 is the surface of the first side plate 151 away from the third side plate 153, and the first outer surface 1514 is also the outer surface of the stopper 15. The first stopper groove 1512 runs through the first inner surface 1516 and the first outer surface 1514, and the connecting plate 134 is arranged in the first stopper groove 1512 and extends outward, that is, the connecting plate 134 protrudes from the first outer surface 1514, so that the connecting plate 134 will always be limited during the movement in the first stopper groove 1512, and will not be separated from the stopper 15, further reducing the deflection of the lock tongue 13 during the movement.
[0042] The second side plate 152 is provided with an opening 1520 for the tongue 132 to extend out, so that the tongue 132 can extend out of the lock housing 11 through the opening 1520. In this embodiment, the opening 1520 is substantially rectangular and substantially matches the cross section of the tongue 132.
[0043] The second side plate 152 includes a first opening surface 1521 and a second opening surface 1522, and the first opening surface 1521 and the second opening surface 1522 are spaced apart along the thickness direction D3 of the lock housing 11 to form an opening 1520. In the present embodiment, the first opening surface 1521 and the second opening surface 1522 are parallel to each other. In other embodiments, the first opening surface 1521 and the second opening surface 1522 may not be parallel. The second side plate 152 also includes a limiting protrusion 1524, which protrudes from the first opening surface 1521 or the second opening surface 1522 toward the opening 1520, and the tongue 132 is provided with a limiting groove 1321. When the tongue 132 extends relative to the lock housing 11, the limiting protrusion 1524 cooperates with the limiting groove 1321. Through the cooperation between the limiting protrusion 1524 and the limiting groove 1321, the second side plate 152 can also limit the tongue body 132, further reducing the deflection of the lock tongue 13 during the movement, making the extension and retraction of the lock tongue 13 more stable.
[0044] In this embodiment, the number of the limiting protrusions 1524 is two, and the two limiting protrusions 1524 are respectively arranged on the first opening surface 1521 and the second opening surface 1522; accordingly, the number of the limiting grooves 1321 is also two, and the two limiting grooves 1321 are arranged on two surfaces of the tongue body 132 along the thickness direction D3. In other embodiments, the number of the limiting protrusions 1524 and the limiting grooves 1321 can also be one, and the limiting protrusion 1524 can be arranged on the first opening surface 1521 or the second opening surface 1522.
[0045] The limiting protrusion 1524 has a first limiting surface 1525 located in the opening 1520, and the first limiting surface 1525 is connected to the first opening surface 1521 or the second opening surface 1522. Specifically, when the limiting protrusion 1524 is set on the first opening surface 1521, the first limiting surface 1525 is connected to the first opening surface 1521; when the limiting protrusion 1524 is set on the second opening surface 1522, the first limiting surface 1525 is connected to the second opening surface 1522. The tongue 132 has a second limiting surface 1323 forming a limiting groove 1321, wherein: the first limiting surface 1525 and the second limiting surface 1323 are both arc-shaped surfaces, and the first limiting surface 1525 can be adapted to contact with the second limiting surface 1323. That is, the first limiting surface 1525 and the second limiting surface 1323 are in arc contact, and the arc makes the contact area between the two larger and the contact pressure is dispersed, thereby reducing the wear and noise during the extension and retraction of the locking tongue 13.
[0046] See also Figure 6 and Figure 7 In this embodiment, when the locking tongue 13 is at the maximum extended position, the orthographic projection of the first limiting surface 1525 on the locking tongue 13 is at least partially located within the range of the second limiting surface 1323 (such as Figure 7 That is, when the lock tongue 13 is in the maximum extended position, the tongue body 132 of the lock tongue 13 will not separate from the second side plate 152, so that when the lock tongue 13 is retracted, the second side plate 152 can still limit the tongue body 132, thereby reducing the deflection of the lock tongue 13 during the retraction process.
[0047] The third side plate 153 is provided with a second limiting groove 1532 extending along the width direction D1 of the lock housing 11. In the present utility model, the third side plate 153 has the same structure as the first side plate 151, the second limiting groove 1532 extends along the width direction D1 of the lock housing 11, and is also a substantially rectangular groove, the connecting plate 134 is slidably matched with the second limiting groove 1532, so that the third side plate 153 of the limiting member 15 can limit the lock tongue 13, therefore, the second limiting groove 1532 can be regarded as a redundant design for limiting the connecting plate 134 of the lock tongue 13, which ensures the reliability of the limiting member 15 limiting the lock tongue 13.
[0048] Please continue reading Figure 4 and Figure 5 The secondary lock 10 further includes a transmission plate 17 and a toggle assembly 19. The toggle assembly 19 is rotatably disposed in the lock housing 11. The toggle assembly 19 is in transmission connection with the lock tongue 13 to toggle the lock tongue 13 to extend or retract relative to the lock housing 11. The transmission plate 17 is movably disposed in the lock housing 11 and can move along the length direction D2 of the lock housing 11. The transmission plate 17 is in transmission connection with the toggle assembly 19 to drive the toggle assembly 19 to toggle the lock tongue 13 to extend or retract relative to the lock housing 11. In this way, when the transmission plate 17 moves along the length direction D2 of the lock housing 11, it can drive the toggle assembly 19 to rotate. The rotation of the toggle assembly 19 will drive the lock tongue 13 to extend or retract relative to the lock housing 11. When the lock tongue 13 extends relative to the lock housing 11, the secondary lock 10 is locked; when the lock tongue 13 retracts relative to the lock housing 11, the secondary lock 10 is unlocked.
[0049] The transmission plate 17 is provided with a plurality of first gear teeth 172, which are sequentially arranged along the length direction D2 of the lock housing 11 to form a straight rack. The toggle assembly 19 includes a rotating gear 191 and a lock tongue paddle 193 which are fixedly connected. The rotating gear 191 and the lock tongue paddle 193 are stacked. For example, the rotating gear 191 and the lock tongue paddle 193 are mounted on the lock housing 11 through the same pin, which can reduce the space occupied by the toggle assembly 19 along the width direction D1 of the lock housing 11, which is conducive to reducing the width of the auxiliary lock 10 and facilitating the installation of the auxiliary lock 10. The rotating gear 191 is provided with a plurality of second gear teeth 1911, which are sequentially arranged along the axial direction of the rotating gear 191. The plurality of first gear teeth 172 mesh with the plurality of second gear teeth 1911. Therefore, the movement of the transmission plate 17 can drive the rotating gear 191 to rotate, thereby driving the lock tongue paddle 193 to rotate.
[0050] The bolt paddle 193 is in transmission connection with the connecting plate 134. Specifically, a guide column 1931 is provided on the side of the bolt paddle 193 away from the rotating gear 191, and the guide column 1931 is penetrated in the guide groove 1341. Since the extension direction of the guide groove 1341 is inclined relative to both the width direction D1 and the length direction D2, when the bolt paddle 193 rotates, the guide column 1931 will abut against the groove wall of the guide groove 1341, thereby generating a component force that drives the bolt 13 to extend or retract relative to the lock housing 11, and during the movement of the bolt 13, the guide column 1931 can move in the guide groove 1341.
[0051] In summary, the lock tongue 13 of the secondary lock 10 provided by the utility model includes a tongue body 132 and a connecting plate 134, the connecting plate 134 is movably arranged in the lock housing 11, the tongue body 132 is fixedly connected to one end of the connecting plate 134, and can be extended or retracted relative to the lock housing 11 along the width direction D1 of the lock housing 11; the limiting member 15 is fixedly arranged in the lock housing 11, the limiting member 15 includes a first side plate 151 and a second side plate 152 connected at an angle, the first side plate 151 is provided with a first limiting groove 1512, the first limiting groove 1512 extends along the width direction D1 of the lock housing 11, the connecting plate 134 is slidably matched with the first limiting groove 1512, and the second side plate 152 is provided with an opening 1520 for the tongue body 132 to extend out. In this way, through the sliding cooperation between the connecting plate 134 and the first limiting groove 1512, the first limiting groove 1512 extends along the width direction D1 of the lock shell 11, so that the first side plate 151 of the limiting member 15 can limit the lock tongue 13, and the lock tongue 13 can move smoothly along the width direction D1 of the lock shell 11, while reducing the movement of the lock tongue 13 along other directions, thereby reducing the deflection of the lock tongue 13, and further reducing the probability of the lock tongue 13 of the auxiliary lock 10 colliding with the door frame when extending.
[0052] See also Figure 5 and Figure 8The utility model also provides a one-piece lock 1, which includes a main lock 30, a connecting rod 20 and a secondary lock 10. The connecting rod 20 is connected between the main lock 30 and the secondary lock 10 so that the main lock 30 can drive the lock tongue 13 of the secondary lock 10 to extend or retract.
[0053] Specifically, when the main lock 30 is locked, the connecting rod 20 pushes the transmission plate 17 to move away from the main lock 30, and the transmission plate 17 drives the lock tongue paddle 193 to extend the lock tongue 13 of the secondary lock 10; when the main lock 30 is unlocked, the connecting rod 20 pushes the transmission plate 17 to move toward the main lock 30, and the transmission plate 17 drives the lock tongue paddle 193 to retract the lock tongue 13 of the secondary lock 10. In this way, the main lock 30 and the secondary lock 10 can be locked or unlocked at the same time.
[0054] The number of the secondary locks 10 may be two, each of which may be connected to the main lock 30 via a connecting rod 20 , and one main lock 30 may simultaneously drive two secondary locks 10 to move.
[0055] In the present invention, unless otherwise clearly specified or limited, the term "assembly" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be internal communication between two elements, it can be only surface contact, or it can be connected through surface contact of an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0056] In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as a specific reference or special structure. The description of the term "some embodiments" 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 the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present invention and the features of the different embodiments or examples without contradiction.
[0057] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A secondary lock, characterized in that: include: A lock housing, the lock housing having a width direction; A lock tongue, the lock tongue comprising a tongue body and a connecting plate, the connecting plate being movably disposed in the lock housing, the tongue body being fixedly connected to one end of the connecting plate and being able to extend or retract relative to the lock housing along a width direction of the lock housing; and A limiting member, wherein the limiting member is fixed in the lock housing, and the limiting member comprises a first side plate and a second side plate connected at an angle, the first side plate being provided with a first limiting groove, the first limiting groove extending along the width direction of the lock housing, the connecting plate slidingly cooperates with the first limiting groove, and the second side plate being provided with an opening for the tongue to extend out.
2. The secondary lock according to claim 1, characterized in that: The limiting member also includes a third side plate, the plane where the third side plate is located is parallel to and spaced from the plane where the first side plate is located, the second side plate is connected between the first side plate and the third side plate, the third side plate is provided with a second limiting groove extending along the width direction of the lock housing, and the connecting plate is slidably matched with the second limiting groove.
3. The secondary lock according to claim 2, characterized in that: The first side plate includes a first outer surface and a first inner surface opposite to each other, the first outer surface is farther away from the third side plate than the first inner surface, the first limiting groove runs through the first inner surface and the first outer surface, and the connecting plate is penetrated through the first limiting groove and extends outward.
4. The secondary lock according to claim 1, characterized in that: The lock housing also has a thickness direction, which is perpendicular to the width direction. The second side plate includes a first opening surface and a second opening surface, and the first opening surface and the second opening surface are spaced along the thickness direction of the lock housing to form the opening. The second side plate also includes a limiting protrusion, which protrudes from the first opening surface or the second opening surface toward the opening. The tongue body is provided with a limiting groove, and when the tongue body extends relative to the lock housing, the limiting protrusion cooperates with the limiting groove.
5. The secondary lock according to claim 4, characterized in that: The limiting protrusion has a first limiting surface located in the opening, the first limiting surface is connected to the first opening surface or the second opening surface, and the tongue body has a second limiting surface forming the limiting groove, wherein: the first limiting surface and the second limiting surface are both arc-shaped surfaces, and the first limiting surface can be adaptively contacted with the second limiting surface.
6. The secondary lock according to claim 5, characterized in that: The lock tongue has a maximum extension position relative to the lock housing. When the lock tongue is at the maximum extension position, the orthographic projection of the first limiting surface on the lock tongue is at least partially located within the range of the second limiting surface.
7. The secondary lock according to claim 1, characterized in that: The lock housing also has a length direction perpendicular to the width direction. The secondary lock also includes a transmission plate and a toggle assembly. The toggle assembly is rotatably arranged in the lock housing, and the toggle assembly is transmission-connected to the lock tongue to toggle the lock tongue to extend or retract relative to the lock housing; the transmission plate is movably arranged in the lock housing and can move along the length direction of the lock housing. The transmission plate is transmission-connected to the toggle assembly to drive the toggle assembly to toggle the lock tongue to extend or retract relative to the lock housing.
8. The secondary lock according to claim 7, characterized in that: The transmission plate is provided with a plurality of first gear teeth, which are arranged in sequence along the length direction of the lock housing. The toggle assembly includes a fixedly connected rotating gear and a lock tongue paddle, the rotating gear and the lock tongue paddle are stacked, the lock tongue paddle is transmission-connected to the connecting plate, the rotating gear is provided with a plurality of second gear teeth, the plurality of second gear teeth are arranged in sequence along the axial direction of the rotating gear, and the plurality of first gear teeth are meshed with the plurality of second gear teeth.
9. The secondary lock according to claim 8, characterized in that: The connecting plate is provided with a guide groove, the extension direction of the guide groove is inclined relative to the width direction and the length direction, and a guide column is provided on the side of the lock tongue paddle away from the rotating gear, and the guide column passes through the guide groove.
10. A one-piece lock, characterized in that: The integrated lock comprises a main lock, a connecting rod and a secondary lock as described in any one of claims 1 to 9, wherein the connecting rod is connected between the main lock and the secondary lock so that the main lock can drive the lock tongue of the secondary lock to extend or retract.