Auxiliary lock body and one-piece lock
By designing the meshing structure between the second gear teeth and the limit teeth on the hook tongue of the secondary lock body, the self-locking of the hook tongue is realized, solving the problem of insufficient safety performance of the traditional joint lock and improving the safety of the lock.
Patent Information
- Application Number
- CN202420495706.9
- 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 hook tongue of the traditional joint lock cannot be self-locked after it is extended, resulting in insufficient safety performance and is easily unlocked by criminals.
A secondary lock body is designed, including a lock shell, a transmission plate and a hook tongue. The transmission plate is equipped with a first gear teeth and a limiting teeth. The gear of the hook tongue is equipped with a second gear teeth. The second gear teeth are opposite to the limiting teeth when the hook tongue extends, preventing the hook tongue from retracting, thereby realizing self-locking.
By realizing the self-locking function of the hook tongue, the safety performance of the secondary lock body and the joint lock is improved, and illegal elements are prevented from unlocking the lock through abnormal means.
Smart Images
Figure CN222615031U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of locks, in particular to a secondary lock body and a connected lock. Background Art
[0002] A one-piece lock usually includes a main lock body and one or two secondary lock bodies. The main lock body can be operated to drive the lock tongue of the secondary lock body to extend or retract. The secondary lock tongue of a traditional one-piece lock cannot be self-locking after being extended, leaving an opportunity for criminals to take advantage of it. The safety performance needs to be improved urgently. Utility Model Content
[0003] The purpose of the embodiment of the utility model is to provide a secondary lock body and a combined lock to solve the above problems. The embodiment of the utility model achieves the above purpose through the following technical solutions.
[0004] In a first aspect, the utility model provides a secondary lock body, comprising:
[0005] Lock case;
[0006] A transmission plate, the transmission plate being movably disposed on the lock housing, the transmission plate being provided with a first gear tooth and a limiting tooth adjacent to the first gear tooth; and
[0007] A hook tongue, the hook tongue includes a tongue body and a gear fixed to the tongue body, the tongue body is rotatably arranged on the lock housing to extend or retract relative to the lock housing, the gear is provided with a second gear tooth, the second gear tooth can selectively engage with the first gear tooth or abut against the limit tooth as the transmission plate moves; when the tongue body is retracted relative to the lock housing, the second gear tooth engages with the first gear tooth; when the tongue body is extended relative to the lock housing, the second gear tooth abuts against the limit tooth.
[0008] In one embodiment, the gear is further provided with an abutment tooth, the abutment tooth is spaced from the second gear tooth to form a limiting groove, the abutment tooth is arranged on the moving path of the transmission plate, and the movement of the transmission plate can drive the gear to rotate so that the limiting tooth engages with the limiting groove.
[0009] In one embodiment, the number of the second gear teeth is two, and the two second gear teeth and the abutment tooth are arranged in sequence along the circumference of the gear, wherein a tooth groove is formed between the two second gear teeth, the tooth groove can cooperate with the first gear tooth, and the length of the tooth groove along the circumference of the gear is smaller than the length of the limiting groove along the circumference of the gear.
[0010] In one embodiment, the lock housing has a length direction and a thickness direction, the transmission plate can move along the length direction, the rotation axis of the tongue body extends along the thickness direction, and the tongue body and the gear are stacked along the thickness direction.
[0011] In one embodiment, the secondary lock body also includes a toggle member and a lock tongue, the lock tongue is movably arranged on the lock shell, and the toggle member is transmission-connected between the hook tongue and the lock tongue, so that when the hook tongue extends relative to the lock shell, the lock tongue can be driven to extend relative to the lock shell, and when the hook tongue retracts relative to the lock shell, the lock tongue can be driven to retract relative to the lock shell.
[0012] In one embodiment, the hook tongue also includes a guide column, which is protruding on the side of the tongue body away from the gear, and the toggle member includes a hinged portion, a transmission rod and a toggle rod, the hinged portion is hinged to the lock housing, the transmission rod and the toggle rod extend from the hinged portion in different directions, the transmission rod is clamped on the guide column, and the toggle rod is movably connected to the lock tongue.
[0013] In one embodiment, the auxiliary lock body also includes a limit seat, which is fixed to the lock shell. The limit seat includes a seat body and a guide rail arranged on the seat body. The extension direction of the guide rail is perpendicular to the movement direction of the transmission plate, and the lock tongue is provided with a guide groove that cooperates with the guide rail.
[0014] In one embodiment, the limit seat also includes a boss arranged on the seat body, the boss and the guide rail are arranged on the same side of the seat body, and at least part of the boss protrudes from the guide rail so that the lock tongue can abut against the boss when it extends relative to the lock housing.
[0015] In one embodiment, the lock housing includes a bottom shell and a face shell covering the bottom shell, the transmission plate is movably disposed on the bottom shell, the transmission plate includes a transmission bottom plate and a baffle, the transmission bottom plate is disposed opposite to the face shell, the baffle extends from the transmission bottom plate toward one side of the face shell, the lock tongue includes a first end and a second end opposite to each other, the first end can extend out of the lock housing; when the lock tongue extends relative to the lock housing, the baffle is opposite to the second end to stop the lock tongue from retracting relative to the lock housing.
[0016] In the second aspect, the utility model also provides a one-piece lock, which includes a main lock body, a connecting rod and any one of the above-mentioned auxiliary lock bodies, wherein the connecting rod is connected between the transmission plates of the main lock body and the auxiliary lock body so that the main lock body can drive the hook tongue of the auxiliary lock body to extend or retract.
[0017] The utility model provides a secondary lock body and a one-piece lock, wherein the secondary lock body comprises a lock housing, a transmission plate and a hook tongue, wherein the transmission plate is movably arranged on the lock housing, and the transmission plate is provided with a first gear tooth and a limiting tooth adjacent to the first gear tooth; the hook tongue comprises a tongue body and a gear fixed on the tongue body, and the tongue body is rotatably arranged on the lock housing to extend or retract relative to the lock housing, and the gear is provided with a second gear tooth, and the second gear tooth can selectively mesh with the first gear tooth or abut against the limiting tooth with the movement of the transmission plate; when the tongue body retracts relative to the lock housing, the second gear tooth meshes with the first gear tooth; when the tongue body extends relative to the lock housing, the second gear tooth abuts against the limiting tooth. Through the meshing of the first gear tooth and the second gear tooth, the transmission plate can smoothly drive the gear to rotate, thereby driving the hook tongue to extend, and after the hook tongue extends, the second gear tooth of the hook tongue is stopped by the limiting tooth of the transmission plate, so that the tongue body cannot rotate to retract relative to the lock housing, thereby realizing the self-locking of the hook tongue, improving the safety performance of the secondary lock body, and also improving the safety performance of the one-piece lock.
[0018] 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
[0019] 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.
[0020] Figure 1 It is a structural schematic diagram of the auxiliary lock body provided by the utility model when the hook tongue is extended.
[0021] Figure 2 yes Figure 1 The schematic diagram of the structure of the secondary lock body after removing the cover is shown.
[0022] Figure 3 yes Figure 1 The schematic diagram of the structure of the secondary lock body after removing the lock shell is shown.
[0023] Figure 4 yes Figure 2 The schematic diagram of the structure of the secondary lock body after removing the hook tongue and the toggle member is shown.
[0024] Figure 5 yes Figure 1 The structural schematic diagram of the hook tongue of the secondary lock body is shown.
[0025] Figure 6 yes Figure 1 The structural schematic diagram of the toggle member of the secondary lock body is shown.
[0026] Figure 7It is a structural schematic diagram of the auxiliary lock body provided by the utility model when the hook tongue is retracted.
[0027] Figure 8 yes Figure 7 The schematic diagram of the structure of the secondary lock body after removing the lock shell is shown.
[0028] Fig. 9 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 found that after the hook tongue of the secondary lock body of the traditional one-piece lock extends relative to the lock shell, it has no self-locking function, resulting in that after the secondary lock body is locked, criminals can still unlock the secondary lock body by turning the hook tongue.
[0032] To this end, the utility model provides a secondary lock body and a one-piece lock. When the tongue of the hook tongue extends relative to the lock housing, the second gear teeth on the hook tongue abut against the limiting teeth of the transmission plate, so that the transmission plate can stop the rotation of the second gear, thereby preventing the tongue of the hook tongue from rotating to retract relative to the lock housing, thereby achieving self-locking of the hook tongue, and preventing others from unlocking the door by abnormal means after locking it, thereby improving the safety performance of the secondary lock body. The secondary lock body and the one-piece lock provided by the utility model are described in detail below in conjunction with the specific implementation and the drawings of the specification.
[0033] See also Figures 1 to 3The utility model provides a secondary lock body 10, which includes a lock housing 11, a transmission plate 12 and a hook tongue 13. The transmission plate 12 is movably arranged on the lock housing 11, and the transmission plate 12 is provided with a first gear tooth 1212 and a limiting tooth 1214 adjacent to the first gear tooth 1212; the hook tongue 13 includes a tongue body 131 and a gear 133 fixedly arranged on the tongue body 131, and the tongue body 131 is rotatably arranged on the lock housing 11 to be relatively locked to the lock housing 11. When the tongue 131 is extended or retracted, the gear 133 is provided with a second gear tooth 1332, and the second gear tooth 1332 can selectively mesh with the first gear tooth 1212 or abut against the limiting gear 1214 as the transmission plate 12 moves; when the tongue 131 is retracted relative to the lock housing 11, the second gear tooth 1332 meshes with the first gear tooth 1212; when the tongue 131 is extended relative to the lock housing 11, the second gear tooth 1332 abuts against the limiting gear 1214.
[0034] Through the meshing of the first gear teeth 1212 and the second gear teeth 1332, the transmission plate 12 can smoothly drive the gear 133 to rotate, thereby driving the hook tongue 13 to extend. After the hook tongue 13 is extended, the second gear teeth 1332 of the hook tongue 13 are stopped by the limiting teeth 1214 of the transmission plate 12, so that the tongue body 131 cannot rotate to retract relative to the lock housing 11, thereby realizing the self-locking of the hook tongue 13 and improving the safety performance of the auxiliary lock body 10.
[0035] 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 111 and a surface housing 113 covering the bottom housing 111, the bottom housing 111 and the surface housing 113 enclose a receiving cavity 115, and the receiving cavity 115 can be used for the transmission plate 12, the hook tongue 13 and other structures. The surface housing 113 can be fixed to the bottom housing 111 by screws (not shown), and can also be fixed to the bottom housing 111 by bonding or welding.
[0036] The bottom shell 111 includes a lock bottom plate 1110, a first lock side plate 1111, a second lock side plate 1112 and a third lock side plate 1113. The lock bottom plate 1110 is parallel to and opposite to the surface shell 113. The planes where the first lock side plate 1111, the second lock side plate 1112 and the third lock side plate 1113 are located are all perpendicular to the plane where the lock bottom plate 1110 is located. The first lock side plate 1111, the second lock side plate 1112 and the third lock side plate 1113 are all connected between the lock bottom plate 1110 and the surface shell 113. Among them, the first lock side plate 1111 and the third lock side plate 1113 are arranged in parallel and opposite to each other, the second lock side plate 1112 is connected between the first lock side plate 1111 and the third lock side plate 1113, and the lock bottom plate 1110, the first lock side plate 1111, the second lock side plate 1112, the third lock side plate 1113 and the surface shell 113 form a receiving cavity 115.
[0037] The transmission plate 12 can move along the length direction D2 of the lock shell 11. The transmission plate 12 is movably arranged on the lock bottom plate 1110. For example, a fixing pin 1114 is provided on the bottom shell 111. The transmission plate 12 is provided with a guide groove 1216 extending along the length direction D2 of the lock shell 11. The fixing pin 1114 is passed through the guide groove 1216. In this way, the transmission plate 12 can only move along the length direction D2 of the lock shell 11.
[0038] The transmission plate 12 is generally in a rectangular plate structure. In other embodiments, the transmission plate 12 can also be generally in an elliptical shape, a waist shape or other shapes, which can be specifically set according to actual conditions to meet the purpose of driving the hook tongue 13 to rotate.
[0039] See also Figure 3 and Figure 4 The transmission plate 12 includes a transmission bottom plate 121 and a baffle 123. The transmission bottom plate 121 is arranged opposite to the surface shell 113. For example, the transmission bottom plate 121 can be fitted with the bottom shell 111. The baffle 123 extends from the transmission bottom plate 121 toward one side of the surface shell 113. In this embodiment, the plane where the baffle 123 is located is perpendicular to the plane where the transmission bottom plate 121 is located; in other embodiments, the angle between the plane where the baffle 123 is located and the plane where the transmission bottom plate 121 is located can also be an acute angle or an obtuse angle.
[0040] The first gear teeth 1212 and the limiting teeth 1214 are arranged on the side of the transmission plate 12, specifically, the first gear teeth 1212 and the limiting teeth 1214 are both arranged on the side of the transmission bottom plate 121 away from the second lock side plate 1112, wherein the first gear teeth 1212 are used to engage with the second gear teeth 1332, so that the movement of the transmission plate 12 can drive the hook tongue 13 to rotate; the limiting teeth 1214 are used to resist the second gear teeth 1332, so that the transmission plate 12 can also limit the rotation of the hook tongue 13 to achieve self-locking of the hook tongue 13.
[0041] The transmission base plate 121 further includes a connecting sleeve 125, which is disposed at one end of the transmission base plate 121 close to the first lock side plate 1111. The connecting sleeve 125 can extend out of the lock housing 11 or retract into the lock housing 11 as the transmission base plate 121 moves. Specifically, the connecting sleeve 125 extending out of the lock housing 11 can cooperate with the hole provided on the door frame, further improving the safety performance of the auxiliary lock body 10. In this embodiment, the connecting sleeve 125 is roughly cylindrical. In other embodiments, the connecting sleeve 125 can also be in a rectangular parallelepiped or other shapes, which can be set according to actual conditions.
[0042] See also Figure 2 , Figure 3 and Figure 5 , the hook tongue 13 can be rotatably arranged on the lock housing 11. In this embodiment, the hook tongue 13 can be fixedly connected with a pin 16, the pin 16 can rotate relative to the lock housing 11, and the rotation axis of the pin 16 extends along the thickness direction D3 of the lock housing 11. In other embodiments, the pin 16 can be fixed to the lock housing 11, and the hook tongue 13 can rotate relative to the pin 16, and the hook tongue 13 can also be rotatably arranged on the lock housing 11. The rotation axis of the tongue body 131 extends along the thickness direction D3, and the tongue body 131 and the gear 133 are overlapped along the thickness direction D3, reducing the space occupied by the tongue body 131 and the gear 133 along the width direction D1 of the lock housing 11, thereby facilitating reducing the width of the lock housing 11 and facilitating the setting of the auxiliary lock body 10 to be narrower.
[0043] The tongue body 131 of the hook tongue 13 includes a rotating portion 1312, a fan-shaped portion 1314 and a hook portion 1316, wherein the rotating portion 1312 is roughly cylindrical and rotatably disposed on the lock housing 11; the fan-shaped portion 1314 is connected to the outer periphery of the rotating portion 1312, and the fan-shaped portion 1314 is roughly fan-shaped. In this embodiment, the central angle corresponding to the fan-shaped portion is roughly 90°. In other embodiments, the central angle corresponding to the fan-shaped portion can also be an acute angle or an obtuse angle, which is not limited here. The hook portion 1316 is protruding from the straight side of the fan-shaped portion 1314 and can extend out of the lock housing 11. For example, the hook portion 1316 can extend into a preset lock hole on the door frame. A slot 1318 is formed between the hook portion 1316 and the rotating portion 1312 , and the slot 1318 can be engaged with the structure in the lock hole to achieve locking of the hook tongue 13 and the door frame, thereby achieving locking of the auxiliary lock body 10 .
[0044] The second gear teeth 1332 can selectively mesh with the first gear teeth 1212 or abut against the limiting teeth 1214 as the transmission plate 12 moves; when the tongue 131 retracts relative to the lock housing 11, the second gear teeth 1332 mesh with the first gear teeth 1212, so when the transmission plate 12 moves toward the direction close to the first lock side plate 1111, it can drive the hook tongue 13 to rotate until it extends relative to the lock housing 11; when the tongue 131 extends relative to the lock housing 11, the second gear teeth 1332 abut against the limiting teeth 1214, so the transmission plate 12 can stop the hook tongue 13 from rotating, preventing the hook tongue 13 from rotating to retract relative to the lock housing 11, thereby realizing self-locking of the hook tongue 13 and improving the safety performance of the auxiliary lock body 10.
[0045] The gear 133 is further provided with an abutting tooth 1334, which is spaced apart from the second gear tooth 1332 to form a limiting groove 1336. The abutting tooth 1334 is arranged on the moving path of the transmission plate 12, and the movement of the transmission plate 12 can drive the gear 133 to rotate so that the limiting tooth 1214 is engaged with the limiting groove 1336. In this way, when the transmission plate 12 moves toward the direction close to the third lock side plate 1113, the limiting tooth 1214 of the transmission plate 12 and the abutting tooth 1334 first abut against each other, and then drive the gear 133 to rotate so that the limiting tooth 1214 is engaged with the limiting groove 1336; when the transmission plate 12 continues to move toward the direction close to the third lock side plate 1113, the gear 133 continues to rotate so that the first gear tooth 1212 is engaged with the second gear tooth 1332 until the tongue 131 is retracted relative to the lock housing 11.
[0046] There are two second gear teeth 1332, and the two second gear teeth 1332 and the abutting teeth 1334 are sequentially arranged along the circumference of the gear 133, wherein a tooth groove 1338 is formed between the two second gear teeth 1332, and the tooth groove 1338 can cooperate with the first gear teeth 1212, so that the first gear teeth 1212 can mesh with the second gear teeth 1332. In this embodiment, the length of the tooth groove 1338 along the circumference of the gear 133 is less than the length of the limiting groove 1336 along the circumference of the gear 133, so that after the gear 133 rotates a certain angle, the second gear teeth 1332 can abut against the limiting teeth 1214.
[0047] The hook tongue 13 is also provided with a guide post 15, which is convexly arranged on the side of the tongue body 131 away from the gear 133. Specifically, the guide post 15 is arranged at the junction of the sector 1314 and the rotating part 1312 of the tongue body 131. In other embodiments, the guide post 15 can also be arranged on the sector 1314 or the rotating part 1312.
[0048] Please refer to the figure Figures 6 to 8The secondary lock body 10 further includes a toggle 17 and a lock tongue 18. The lock tongue 18 is movably disposed on the lock housing 11. The toggle 17 is transmission-connected between the hook tongue 13 and the lock tongue 18, so that when the hook tongue 13 is extended relative to the lock housing 11, the lock tongue 18 can be driven to extend relative to the lock housing 11, and when the hook tongue 13 is retracted relative to the lock housing 11, the lock tongue 18 can be driven to retract relative to the lock housing 11, so that the hook tongue 13 and the lock tongue 18 can be synchronously in an extended state or a retracted state. By providing the lock tongue 18, the safety performance of the secondary lock body 10 can be further improved.
[0049] The toggle member 17 includes a hinged portion 171, a transmission rod 173 and a toggle rod 175. The hinged portion 171 is hinged to the lock housing 11. For example, the hinged portion 171 can be hinged to the face housing 113. The transmission rod 173 and the toggle rod 175 extend from the hinged portion 171 in different directions. The transmission rod 173 is clamped on the guide column 15. For example, a groove 1732 can be provided at one end of the transmission rod 173 away from the hinged portion 171. The groove 1732 cooperates with the guide column 15 so that the transmission rod 173 can rotate around the guide column 15. The toggle rod 175 is movably connected to the lock tongue 18. For example, a waist-shaped hole 1752 can be provided at one end of the toggle rod 175 away from the hinged portion 171. A fixing column 1821 can be provided on the lock tongue 18. The fixing column 1821 is penetrated through the waist-shaped hole 1752. In this way, when the hook tongue 13 extends relative to the lock housing 11 , it can drive the lock tongue 18 to extend relative to the lock housing 11 , and when the hook tongue 13 retracts relative to the lock housing 11 , it can drive the lock tongue 18 to retract relative to the lock housing 11 .
[0050] The lock tongue 18 includes a first end 181 and a second end 182 opposite to each other. The first end 181 can extend out of the lock housing 11 and can be matched with a preset lock hole on the door frame. When the lock tongue 18 extends relative to the lock housing 11, the baffle 123 is opposite to the second end 182 to stop the lock tongue 18 from retracting relative to the lock housing 11. Specifically, when the lock tongue 18 extends relative to the lock housing 11, the baffle 123 is located on the moving path of the lock tongue 18 to prevent the lock tongue 18 from retracting relative to the lock housing 11, that is, the self-locking of the lock tongue 18 is achieved by providing the baffle 123, further increasing the safety performance of the auxiliary lock body 10. In this embodiment, the fixing column 1821 is provided at the second end 182.
[0051] Please continue reading Figure 3 and Figure 4The auxiliary lock body 10 also includes a limit seat 19, which is fixed to the lock shell 11. The limit seat 19 includes a seat body 191 and a guide rail 193 arranged on the seat body 191. The extension direction of the guide rail 193 is perpendicular to the moving direction of the transmission plate 12. Specifically, the guide rail 193 extends along the width direction D1 of the lock shell 11, and the lock tongue 18 is provided with a guide groove 183 that cooperates with the guide rail 193. Through the cooperation between the guide rail 193 and the guide groove 183, the lock tongue 18 can reciprocate along the width direction D1 of the lock shell 11, so that the lock tongue 18 extends or retracts relative to the lock shell 11.
[0052] The limiting seat 19 further includes a boss 195 disposed on the seat body 191. The boss 195 and the guide rail 193 are disposed on the same side of the seat body 191, and at least a portion of the boss 195 protrudes from the guide rail 193, so that the lock tongue 18 can abut against the boss 195 when it is extended relative to the lock housing 11. In this way, the boss 195 can limit the maximum extension length of the lock tongue 18 relative to the lock housing 11, and prevent the lock tongue 18 from being separated from the limiting seat 19 due to the excessive extension length, and ensure that the lock tongue 18 can be retracted relative to the lock housing 11 under the toggle of the toggle member 17 after being extended relative to the lock housing 11.
[0053] In summary, the auxiliary lock body 10 provided by the utility model includes a lock housing 11, a transmission plate 12 and a hook tongue 13, the transmission plate 12 is movably arranged on the lock housing 11, the transmission plate 12 is provided with a first gear tooth 1212 and a limiting tooth 1214 adjacent to the first gear tooth 1212; the hook tongue 13 includes a tongue body 131 and a gear 133 fixed to the tongue body 131, the tongue body 131 is rotatably arranged on the lock housing 11 to extend or retract relative to the lock housing 11, the gear 133 is provided with a second gear tooth 1332, the second gear tooth 1332 can selectively mesh with the first gear tooth 1212 or abut against the limiting tooth 1214 as the transmission plate 12 moves; when the tongue body 131 is retracted relative to the lock housing 11, the second gear tooth 1332 meshes with the first gear tooth 1212; when the tongue body 131 is extended relative to the lock housing 11, the second gear tooth 1332 abuts against the limiting tooth 1214. Through the meshing of the first gear teeth 1212 and the second gear teeth 1332, the transmission plate 12 can smoothly drive the gear 133 to rotate, thereby driving the hook tongue 13 to extend. After the hook tongue 13 is extended, the second gear teeth 1332 of the hook tongue 13 are stopped by the limiting teeth 1214 of the transmission plate 12, so that the tongue body 131 cannot rotate to retract relative to the lock housing 11, thereby realizing the self-locking of the hook tongue 13 and improving the safety performance of the auxiliary lock body 10.
[0054] See also Figure 8 and Fig. 9 The utility model also provides a one-piece lock 1, which includes a main lock body 30, a connecting rod 20 and an auxiliary lock body 10. The connecting rod 20 is connected between the main lock body 30 and the auxiliary lock body 10 so that the main lock body 30 can drive the hook tongue 13 of the auxiliary lock body 10 to extend or retract.
[0055] Specifically, when the main lock body 30 is locked, the connecting rod 20 pushes the transmission plate 12 to move away from the main lock body 30, and the transmission plate 12 drives the gear 133 of the hook tongue 13 to rotate, so that the hook tongue 13 of the auxiliary lock body 10 extends; when the main lock body 30 is unlocked, the connecting rod 20 pushes the transmission plate 12 to move toward the main lock body 30, and the transmission plate 12 drives the gear 133 of the hook tongue 13 to rotate in the opposite direction, so that the hook tongue 13 of the auxiliary lock body 10 retracts. In this way, the main lock body 30 and the auxiliary lock body 10 can be locked or unlocked at the same time.
[0056] The number of auxiliary lock bodies 10 can be two, each auxiliary lock body 10 can be connected to the main lock body 30 through a connecting rod 20, and one main lock body 30 can drive two auxiliary lock bodies 10 to move at the same time.
[0057] 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.
[0058] 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.
[0059] 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 body, characterized in that: include: Lock case; A transmission plate, the transmission plate is movably arranged on the lock housing, and the transmission plate is provided with a first gear tooth and a limiting tooth adjacent to the first gear tooth; and A hook tongue, the hook tongue includes a tongue body and a gear fixed to the tongue body, the tongue body is rotatably arranged on the lock housing to extend or retract relative to the lock housing, the gear is provided with a second gear tooth, the second gear tooth can selectively engage with the first gear tooth or abut against the limit tooth as the transmission plate moves; when the tongue body is retracted relative to the lock housing, the second gear tooth engages with the first gear tooth; when the tongue body is extended relative to the lock housing, the second gear tooth abuts against the limit tooth.
2. The auxiliary lock body according to claim 1, characterized in that: The gear is also provided with an abutment tooth, which is spaced from the second gear tooth to form a limiting groove. The abutment tooth is arranged on the moving path of the transmission plate. The movement of the transmission plate can drive the gear to rotate so that the limiting tooth is engaged with the limiting groove.
3. The auxiliary lock body according to claim 2, characterized in that: The number of the second gear teeth is two, and the two second gear teeth and the abutment teeth are arranged in sequence along the circumference of the gear, wherein a tooth groove is formed between the two second gear teeth, and the tooth groove can cooperate with the first gear tooth, and the length of the tooth groove along the circumference of the gear is smaller than the length of the limiting groove along the circumference of the gear.
4. The auxiliary lock body according to claim 1, characterized in that: The lock housing has a length direction and a thickness direction, the transmission plate can move along the length direction, the rotation axis of the tongue body extends along the thickness direction, and the tongue body and the gear are stacked along the thickness direction.
5. The auxiliary lock body according to claim 1, characterized in that: The secondary lock body also includes a toggle member and a lock tongue, wherein the lock tongue is movably arranged on the lock housing, and the toggle member is transmission-connected between the hook tongue and the lock tongue so as to drive the lock tongue to extend relative to the lock housing when the hook tongue extends relative to the lock housing, and to drive the lock tongue to retract relative to the lock housing when the hook tongue retracts relative to the lock housing.
6. The auxiliary lock body according to claim 5, characterized in that: The hook tongue also includes a guide column, which is protruding on the side of the tongue body away from the gear. The toggle member includes a hinged portion, a transmission rod and a toggle rod. The hinged portion is hinged to the lock housing, and the transmission rod and the toggle rod extend from the hinged portion in different directions. The transmission rod is clamped on the guide column, and the toggle rod is movably connected to the lock tongue.
7. The auxiliary lock body according to claim 6, characterized in that: The auxiliary lock body also includes a limit seat, which is fixed to the lock shell. The limit seat includes a seat body and a guide rail arranged on the seat body. The extension direction of the guide rail is perpendicular to the moving direction of the transmission plate. The lock tongue is provided with a guide groove that cooperates with the guide rail.
8. The auxiliary lock body according to claim 7, characterized in that: The limit seat also includes a boss arranged on the seat body, the boss and the guide rail are arranged on the same side of the seat body, and at least part of the boss protrudes from the guide rail, so that the lock tongue can abut against the boss when it extends relative to the lock housing.
9. The auxiliary lock body according to claim 5, characterized in that: The lock housing includes a bottom shell and a face shell covering the bottom shell, the transmission plate is movably arranged on the bottom shell, the transmission plate includes a transmission bottom plate and a baffle, the transmission bottom plate is arranged opposite to the face shell, the baffle extends from the transmission bottom plate toward one side of the face shell, the lock tongue includes a first end and a second end opposite to each other, the first end can extend out of the lock housing; when the lock tongue extends relative to the lock housing, the baffle is opposite to the second end to stop the lock tongue from retracting relative to the lock housing.
10. A one-piece lock, characterized in that: The integrated lock comprises a main lock body, a connecting rod and a secondary lock body as described in any one of claims 1 to 9, wherein the connecting rod is connected between the transmission plates of the main lock body and the secondary lock body so that the main lock body can drive the hook tongue of the secondary lock body to extend or retract.