Lower transmission lock

Abstract

This utility model discloses a downward transmission lock, including a housing, a drive module, a locking module, and a limiting member. The drive module is located in the housing and has a rotatable lever. The locking module includes a drive member and a locking member. The drive member can slide in the vertical direction, and a drive structure is provided between the drive member and the lever. The limiting member is movably installed in the housing and can move to an unlock position and a locked position. A positioning structure is provided between the limiting member and the drive member. When the lever rotates, it can drive the drive member to move up or down through the drive structure. The limiting member can return to the locked position and lock the drive member. When the lever drives the drive member to move up or down through the drive structure, the lever can drive the limiting member to move to the unlock position. The positioning structure releases the lock on the drive member. With the above-mentioned downward transmission lock, the user can lock or unlock the floor lock without squatting down, which is convenient to use. It also has a positioning structure, which makes it highly reliable and safe to use.

Description

Technical Field

[0001] This utility model relates to the field of locks, and in particular to a lower transmission lock. Background Technology

[0002] Currently, some door types (such as glass doors) are not suitable for door-to-door locking mechanisms and require floor locks. This means that a locking hole needs to be installed in the ground, and a traditional door lock needs to be installed at the bottom of the door. Locking or unlocking requires people to squat down and turn the key or knob to drive the bolt up and down to unlock, which is quite troublesome. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a lower transmission lock.

[0004] According to a first aspect of the present invention, a lower transmission lock includes a housing, a drive module, a locking module, and a limiting member. The drive module is disposed in the housing and has a rotatable lever. The locking module includes a drive member disposed in the housing and a locking member disposed in the drive member and extending downward. The drive member is slidable in a vertical direction, and a drive structure is provided between the drive member and the lever. The limiting member is movably disposed in the housing and can move to an unlock position and a locked position. A positioning structure is provided between the limiting member and the drive member. When the lever rotates, it can drive the drive member to move up or down through the drive structure. The limiting member can be reset to the locked position and locked by the positioning structure. When the lever drives the drive member to move up or down through the drive structure, the lever can drive the limiting member to move to the unlock position, and the positioning structure releases the lock on the drive member.

[0005] The lower transmission lock according to the embodiments of this utility model has at least the following beneficial effects: with the above-mentioned lower transmission lock, the user can lock or unlock the floor lock without squatting down, which is convenient to use, and has a positioning structure, which makes it highly reliable and safe to use.

[0006] According to some embodiments of the present invention, the driving structure includes a first driving part, a second driving part, and a third driving part that are spaced apart in the vertical direction on the driving member. The toggle block can push the first driving part and the second driving part upward to drive the driving member to move upward, and the toggle block can push the second driving part and the third driving part downward to drive the driving member to move downward.

[0007] According to some embodiments of the present invention, the first driving part is provided with a first clearance structure, which allows the lever to rotate downward through the first driving part so that the lever can rotate downward to a position that abuts against the second driving part.

[0008] According to some embodiments of the present invention, the second driving part is provided with a second avoidance structure, which allows the lever to rotate upward through the second driving part so that the lever can rotate upward to a position that abuts against the first driving part.

[0009] According to some embodiments of the present invention, the third driving part is provided with a third clearance structure, which allows the lever to rotate upward through the third driving part so that the lever can rotate upward to a position that abuts against the second driving part.

[0010] According to some embodiments of the present invention, the limiting member is provided with a pushing part. When the toggle block drives the driving member to move up or down through the driving structure, the toggle block pushes the pushing part to move the limiting member laterally to the unlocking position.

[0011] According to some embodiments of the present invention, a torsion spring is provided between the limiting member and the housing, and the torsion spring can reset the limiting member to the locked position.

[0012] According to some embodiments of this utility model, the driving member is provided with an inner frame hole, and the positioning structure includes a first limiting part and a second limiting part that are spaced apart along the vertical direction on the side wall of the inner frame hole. A first limiting groove is formed between the first limiting part and the upper wall of the inner frame hole, a second limiting groove is formed between the first limiting part and the second limiting part, and a third limiting groove is formed between the second limiting part and the lower wall of the inner frame hole. The limiting member is provided with a locking part corresponding to the first limiting groove, the second limiting groove and the third limiting groove. When the limiting member is in the locked position, the locking part is engaged in the first limiting groove, the second limiting groove or the third limiting groove. The pusher can push the limiting member to move laterally to the unlocked position, so that the locking part is disengaged from the first limiting groove, the second limiting groove or the third limiting groove.

[0013] According to some embodiments of the present invention, the upper and / or lower parts of the first limiting part and the second limiting part are provided with guide surface groups, which can guide the locking part to slide into the first limiting groove, the second limiting groove or the third limiting groove.

[0014] According to some embodiments of the present invention, the upper parts of the first limiting part and the second limiting part are respectively provided with the guide surface group. The guide surface group includes a first horizontal surface, a first inclined surface and a second horizontal surface. The second horizontal surface is provided at the root of the first limiting part and the second limiting part, the first horizontal surface is provided at the end of the first limiting part and the second limiting part, the second horizontal surface is higher than the first horizontal surface, and the first inclined surface connects the first horizontal surface and the second horizontal surface.

[0015] According to some embodiments of the present invention, the lower portions of the first limiting portion and the second limiting portion are respectively provided with the guide surface group, the guide surface group including a second inclined surface, the second inclined surface extending obliquely downward from the ends of the first limiting portion and the second limiting portion to the root of the first limiting portion and the second limiting portion.

[0016] According to some embodiments of the present invention, the positioning structure includes at least one limiting part disposed on the driving member and extending in the horizontal direction. The limiting member is provided with a locking part that can abut against the upper part of the limiting part. The upper part of the limiting part is provided with a guide surface group. The guide surface group includes a first horizontal surface, a first inclined surface and a second horizontal surface. The second horizontal surface is disposed at the root of the limiting part, the first horizontal surface is disposed at the end of the limiting part, the second horizontal surface is higher than the first horizontal surface, and the first inclined surface connects the first horizontal surface and the second horizontal surface.

[0017] According to some embodiments of the present invention, the positioning structure includes at least one limiting part disposed on the driving member and extending in a horizontal direction. The limiting member is provided with a locking part that can abut against the lower part of the limiting part. The lower part of the limiting part is provided with a guide surface assembly, the guide surface assembly including a second inclined surface, the second inclined surface extending obliquely downward from the end of the limiting part to the root of the limiting part. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the lower transmission lock according to an embodiment of the present utility model; Figure 2 This is an exploded view of the lower transmission lock according to an embodiment of the present utility model; Figure 3 This is an exploded view of the locking module according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the limiting member according to an embodiment of the present utility model; Figure 5This is a schematic diagram of the internal structure of the lower transmission lock when the limiting member is inserted into the first limiting groove according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the internal structure of the lower transmission lock when the limiting member is inserted into the second limiting groove according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of the internal structure of the lower transmission lock when the limiting member is inserted into the third limiting groove according to an embodiment of the present utility model. Figure 8 This is a schematic diagram of the internal structure of the lower transmission lock when the limiting member is pushed to the unlock position according to an embodiment of the present utility model.

[0019] Figure label: Housing 100, first guide groove 101, second guide post 110, torsion spring 120; Drive module 200, dial block 210; Drive component 300, inner frame hole 301, upper wall 301a, lower wall 301b, first drive part 310, first clearance structure 311, second drive part 320, second clearance structure 321, third drive part 330, third clearance structure 331, first limiting part 350, first limiting groove 351, second limiting groove 352, third limiting groove 353, second limiting part 360, first horizontal surface 361, second horizontal surface 362, first inclined surface 363, second inclined surface 364, first guide post 370; Locking component 400; Limiting component 500, second guide groove 501, pushing part 510, and locking part 520. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] The following is for reference. Figures 1 to 8 This invention describes a lower transmission lock according to an embodiment of the present invention.

[0025] like Figures 1 to 8 As shown, the lower transmission lock according to an embodiment of the present invention includes a housing 100, a drive module 200, a locking module, and a limiting member 500. The drive module 200 is disposed in the housing 100 and is provided with a rotatable lever 210. The locking module includes a drive member 300 disposed in the housing 100 and a locking member 400 disposed in the drive member 300 and extending downward. The drive member 300 is slidable in the vertical direction, and a drive structure is provided between the drive member 300 and the lever 210. The limiting member 500 is movably disposed in the housing 100. 0. The limiting member 500 can move to the unlock position and the locked position. A positioning structure is provided between the limiting member 500 and the driving member 300. When the toggle block 210 rotates, it can drive the driving member 300 to move up or down through the driving structure. The limiting member 500 can be reset to the locked position and the driving member 300 is locked through the positioning structure. When the toggle block 210 drives the driving member 300 to move up or down through the driving structure, the toggle block 210 can drive the limiting member 500 to move to the unlock position, and the positioning structure releases the lock on the driving member 300.

[0026] In practical applications, the locking member 400 extends to the ground. By rotating the lever 210 to drive the driving member 300 to move up and down, the locking or unlocking action can be achieved. When the lever 210 drives the driving member 300 to move up or down, the lever 210 drives the limiting member 500 to move to the unlock position. The positioning structure releases the lock on the driving member 300, allowing the lever 210 to drive the driving member 300 to move up and down normally. When the lever 210 does not perform the unlocking or locking action, the limiting member 500 can return to the locked position and lock the driving member 300 through the positioning structure, so that the locking member 400 can be kept in the unlocked or locked position.

[0027] With the aforementioned downward transmission lock, users can lock or unlock the floor lock without crouching down, making it convenient to use. It also features a positioning structure, ensuring high reliability and security.

[0028] In some embodiments of this utility model, the locking member 400 is a long cylindrical pin, and the cross-section can be circular, square, etc.

[0029] like Figure 2 As shown, in some embodiments of this utility model, the drive module 200 is a mechanical lock body. One side of the mechanical lock body is a lock cylinder mechanism corresponding to the key. When the corresponding key is inserted, the key can be rotated to drive the dial 210 to rotate. The other side of the mechanical lock body is a knob connected to the dial 210. Rotating the knob can drive the dial 210 to rotate, satisfying the function of locking / unlocking with an external key and locking / unlocking directly with an internal knob.

[0030] It is understood that in some embodiments of this utility model, the drive module 200 may also be a mechanical lock body with other structures, such as a mechanical lock body with lock cylinders at both ends that require keys to unlock, or a mechanical lock body with knobs at both ends that are directly connected to the dial 210, all of which can meet the locking and unlocking requirements of the lower transmission lock and meet different usage requirements.

[0031] It is conceivable that in some embodiments of this utility model, the drive module 200 can also be an electrically driven lock body, such as by configuring a motor and reducer to drive the lever 210 to rotate, which can also meet the requirements of locking and unlocking of the lower transmission lock, and can be connected to fingerprint recognition module, face recognition module, magnetic card recognition module, etc. to realize different lock functions. In addition, it can also be connected to a smart module to realize the function of smart control of the lock by mobile phone.

[0032] like Figure 3 and Figures 5 to 8 As shown, in some embodiments of this utility model, the driving structure includes a first driving part 310, a second driving part 320, and a third driving part 330 spaced apart along the vertical direction on the driving member 300. The toggle block 210 can push the first driving part 310 and the second driving part 320 upward to drive the driving member 300 to move upward, and the toggle block 210 can push the second driving part 320 and the third driving part 330 downward to drive the driving member 300 to move downward. By configuring the first driving part 310, the second driving part 320, and the third driving part 330, the two-stage driving function of the driving member 300 is realized, that is, the locking member 400 has three different stopping positions at different heights to meet the application requirements of different floor locks.

[0033] Specifically, if the depth of the ground locking hole is large, the user can rotate the lever 210 twice (the first time pushing the second drive part 320 to move the locking member 400 down a certain depth, and the second time pushing the third drive part 330 to move the locking member 400 down a certain depth again), so that the locking member 400 can fall into the lowest position, with a larger insertion depth with the ground locking hole, improving reliability and security. If the depth of the ground locking hole is small or if you want to lock quickly and easily, the user can rotate the lever 210 once (pushing the second drive part 320 to move the locking member 400 down a certain depth) to lock. To unlock, rotate the lever 210 twice or once in the opposite direction, which will not be described in detail here.

[0034] It is understood that in some embodiments of this utility model, the drive member 300 may also be configured with only a single drive unit, and the toggle block 210 may push the drive unit downward or upward to adjust the two height positions of the drive member 300 and the locking member 400, which can also meet the locking and unlocking requirements of the floor lock.

[0035] It is conceivable that in some embodiments of this utility model, the drive unit may be provided in three or more forms to meet different application requirements.

[0036] like Figure 3 As shown, in some embodiments of this utility model, the first driving part 310 is provided with a first avoidance structure 311. The first avoidance structure 311 allows the toggle block 210 to rotate downward through the first driving part 310, so that the toggle block 210 can rotate downward to a position that abuts against the second driving part 320, thereby realizing the downward driving of the driving member 300.

[0037] Specifically, such as Figure 6 As shown, the locking part 520 is engaged in the second limiting groove 352, and the driving member 300 / locking member 400 is in the middle position. At this time, the first clearance structure 311 on the first driving part 310 allows the toggle block 210 to pass through the first driving part 310 clockwise or counterclockwise, so that the toggle block 210 can push the lower part of the second driving part 320 upward (clockwise rotation) or push the upper part of the second driving part 320 downward (counterclockwise), so that the driving member 300 / locking member 400 moves up or down.

[0038] like Figure 3 As shown, in some embodiments of this utility model, the second drive unit 320 is provided with a second avoidance structure 321. The second avoidance structure 321 allows the toggle block 210 to rotate upward through the second drive unit 320, so that the toggle block 210 can rotate upward to a position that abuts against the first drive unit 310, thereby realizing the upward drive of the drive member 300.

[0039] Specifically, such as Figure 5As shown, the locking part 520 is engaged in the first limiting groove 351, and the driving member 300 / locking member 400 is in the lowest position. At this time, the second clearance structure 321 on the second driving part 320 allows the toggle block 210 to pass through the second driving part 320 clockwise, so that the toggle block 210 can push the lower part of the first driving part 310 upward (clockwise rotation) to make the driving member 300 / locking member 400 move upward.

[0040] like Figure 3 As shown, in some embodiments of this utility model, the third driving part 330 is provided with a third avoidance structure 331. The third avoidance structure 331 allows the toggle block 210 to rotate upward through the third driving part 330 so that the toggle block 210 can rotate upward to a position that abuts against the second driving part 320, thereby realizing the upward driving of the driving member 300.

[0041] Specifically, such as Figure 6 As shown, the locking part 520 is engaged in the second limiting groove 352, and the driving member 300 / locking member 400 is in the middle position. At this time, the third clearance structure 331 on the third driving part 330 allows the toggle block 210 to pass through the third driving part 330 clockwise, so that the toggle block 210 can push the lower part of the second driving part 320 upward (clockwise rotation) to make the driving member 300 / locking member 400 move upward.

[0042] like Figure 3 As shown, in some embodiments of this utility model, the driving component 300 is formed by assembling two components. Of course, in specific implementation, the driving component 300 can also be an integral component, which will not be described in detail here.

[0043] In some embodiments of this utility model, the locking member 400 can be detachably installed onto the driving member 300 to facilitate the replacement of locking members 400 of different lengths according to different lock installation positions.

[0044] Specifically, such as Figure 3 As shown, the locking component 400 can be detachably installed to the driving component 300 through a threaded engagement structure. Of course, in the specific implementation process, the locking component 400 can be detachably installed to the driving component 300 through a plug-in structure in conjunction with buckles, pins, etc. for positioning.

[0045] like Figure 4 As shown, in some embodiments of this utility model, the limiting member 500 is provided with a pushing part 510. When the toggle block 210 drives the driving member 300 to move up or down through the driving structure, the toggle block 210 pushes the pushing part 510 to move the limiting member 500 laterally to the unlocking position, thereby unlocking the driving member 300.

[0046] like Figure 4As shown, in some embodiments of this utility model, the upper and lower parts of the pushing part 510 are both pushing inclined surfaces that can cooperate with the lever block 210.

[0047] like Figure 2 As shown, in some embodiments of this utility model, a torsion spring 120 is provided between the limiting member 500 and the housing 100, and the torsion spring 120 can reset the limiting member 500 to the locked position.

[0048] Of course, in the specific implementation process, a tension spring or other means can be set between the limiting member 500 and the housing 100 to realize the reset function of the limiting member 500, which will not be described in detail here.

[0049] like Figure 3 As shown, in some embodiments of this utility model, the driving member 300 is provided with an inner frame hole 301, and the positioning structure includes a first limiting part 350 and a second limiting part 360 spaced apart along the vertical direction on the side wall of the inner frame hole 301. A first limiting groove 351 is formed between the first limiting part 350 and the upper wall 301a of the inner frame hole 301, a second limiting groove 352 is formed between the first limiting part 350 and the second limiting part 360, and a third limiting groove 353 is formed between the second limiting part 360 and the lower wall 301b of the inner frame hole 301. The limiting member 500 is provided with a groove that connects to the first limiting groove 351 and the second limiting part 360. When the limiting member 500 is in the locked position, the locking part 520 corresponding to the limiting groove 352 and the third limiting groove 353 engages with the first limiting groove 351, the second limiting groove 352, or the third limiting groove 353. The push block 210 can push the limiting member 500 to move laterally to the unlocked position, so that the locking part 520 disengages from the first limiting groove 351, the second limiting groove 352, or the third limiting groove 353. Through the cooperation of the locking part 520 with the first limiting groove 351, the second limiting groove 352, and the third limiting groove 353 respectively, the driving member 300 can be positioned at the lowest position, the middle position, and the highest position.

[0050] Specifically, such as Figure 5 As shown, the locking part 520 engages with the first limiting groove 351, and the driving component 300 is positioned at its lowest point; as Figure 6 As shown, the locking part 520 engages with the second limiting groove 352, and the driving component 300 is positioned in the middle position; as Figure 7 As shown, the locking part 520 is engaged in the third limiting groove 353, and the driving component 300 is positioned at the highest position.

[0051] like Figures 2 to 8As shown, in some embodiments of this utility model, the first driving part 310, the second driving part 320, and the third driving part 330 are located on the right side of the driving member 300, the pushing part 510 is located on the right side of the limiting member 500, and the toggle block 210 is located to the right of the driving member 300 and the limiting member 500. When the toggle block 210 is rotated, the toggle block 210 can press against the first driving part 310, the second driving part 320, or the third driving part 330, and the pushing part 510 presses against it. The first limiting part 350 and the second limiting part 360 are located on the left side of the driving member 300, and the locking part 520 is located on the left side of the limiting member 500 and is inserted into the inner frame hole 301, so that when the locking part 520 moves left and right, it can cooperate with the first limiting groove 351, the second limiting groove 352, and the third limiting groove 353.

[0052] In some embodiments of this utility model, the upper and / or lower parts of the first limiting part 350 and the second limiting part 360 are provided with guide surface groups, which can guide the locking part 520 to slide into the first limiting groove 351, the second limiting groove 352 or the third limiting groove 353, so that the locking part 520 can smoothly slide into the first limiting groove 351, the second limiting groove 352 or the third limiting groove 353.

[0053] like Figure 3 As shown, in some embodiments of this utility model, the upper parts of the first limiting part 350 and the second limiting part 360 are respectively provided with guide surface groups. The guide surface groups include a first horizontal surface 361, a first inclined surface 363 and a second horizontal surface 362. The second horizontal surface 362 is located at the root of the first limiting part 350 and the second limiting part 360, and the first horizontal surface 361 is located at the end of the first limiting part 350 and the second limiting part 360. The second horizontal surface 362 is higher than the first horizontal surface 361. The first inclined surface 363 connects the first horizontal surface 361 and the second horizontal surface 362 to facilitate the guide locking part 520 to be locked above the first limiting part 350 and the second limiting part 360, thereby improving reliability.

[0054] Specifically, the locking part 520 has a square structure. When the locking part 520 is engaged above the first limiting part 350 and the second limiting part 360, the locking part 520 engages with the corresponding first limiting groove 351 and second limiting groove 352. The locking member 400 is in the lowest or middle position, i.e., in the locked position. During the process of the locking part 520 sliding into the first limiting groove 351 and the second limiting groove 352, the locking part 520 first contacts the first horizontal surface 361. Both the first horizontal surface 361 and the second horizontal surface 362 are horizontal planes, so that the locking part 520 is already relatively stably positioned when it contacts the first horizontal surface 361. The locking part 520 is limited to prevent it from easily coming off to the right (e.g., if there are foreign objects in the lock hole or the door shakes and causes the lock hole to shift, it will generate an upward reaction force on the locking member 400). Continuing to drive the toggle block 210, the locking part 520 can slide along the first inclined surface 363 into the bottom of the first limiting groove 351 and the second limiting groove 352 and abut against the second horizontal surface 362. At this time, the locking part 520 is stably abutting against the second horizontal surface 362, making it difficult for the locking part 520 to easily come off to the right (e.g., when violently shaking the door or forcibly prying the locking member 400), thereby facilitating the sliding of the locking part 520 and improving reliability.

[0055] like Figure 3 As shown, in some embodiments of this utility model, the lower parts of the first limiting part 350 and the second limiting part 360 are respectively provided with guide surface groups. The guide surface group includes a second inclined surface 364. The second inclined surface 364 extends obliquely downward from the ends of the first limiting part 350 and the second limiting part 360 to the roots of the first limiting part 350 and the second limiting part 360, so as to facilitate the locking part 520 to slide into the lower part of the limiting part.

[0056] It is understood that in some embodiments of this utility model, when the driving member 300 is configured with only a single driving part and the driving member 300 / locking member 400 has two height position adjustments, only one limiting part can be configured to meet the positioning requirements of the two height positions.

[0057] Of course, in the actual implementation process, three or more limit parts can be set as needed to meet different requirements.

[0058] In some embodiments of this utility model, the positioning structure includes at least one limiting part disposed on the driving member 300 and extending in the horizontal direction. The limiting member 500 is provided with a locking part 520 that can abut against the upper part of the limiting part. The upper part of the limiting part is provided with a guide surface assembly, which includes a first horizontal surface 361, a first inclined surface 363, and a second horizontal surface 362. The second horizontal surface 362 is disposed at the root of the limiting part, the first horizontal surface 361 is disposed at the end of the limiting part, the second horizontal surface 362 is higher than the first horizontal surface 361, and the first inclined surface 363 connects the first horizontal surface 361 and the second horizontal surface 362 to facilitate guiding the locking part 520 to engage with the upper part of the limiting part and improve reliability.

[0059] In some embodiments of this utility model, the positioning structure includes at least one limiting part disposed on the driving member 300 and extending in the horizontal direction. The limiting member 500 is provided with a locking part 520 that can abut against the lower part of the limiting part. The lower part of the limiting part is provided with a guide surface assembly, which includes a second inclined surface 364. The second inclined surface 364 extends obliquely downward from the end of the limiting part to the root of the limiting part, so as to facilitate the locking part 520 sliding into the lower part of the limiting part.

[0060] like Figure 2 , Figure 3 As shown, in some embodiments of this utility model, the driving member 300 is provided with at least one first guide post 370, and the housing 100 is provided with a first guide groove 101 that can slidably cooperate with the first guide post 370. The first guide groove 101 extends in the vertical direction to restrict the driving member 300 to slide only in the vertical direction. The cooperation between the first guide post 370 and the first guide groove 101 can also limit the vertical sliding distance of the driving member 300, avoid the driving member 300 from sliding out too much and causing the mechanism to fail, and improve the reliability of the lock.

[0061] like Figure 2 , Figure 4 As shown, in some embodiments of this utility model, the housing 100 is provided with at least one second guide post 110, and the limiting member 500 is provided with a second guide groove 501 that can slidably cooperate with the second guide post 110. The second guide groove 501 extends in the left and right direction to limit the limiting member 500 to slide only in the left and right direction. The cooperation between the second guide post 110 and the second guide groove 501 can also limit the left and right sliding distance of the limiting member 500, so as to avoid the limiting member 500 sliding out too much and causing the mechanism to fail, thereby improving the reliability of the lock.

[0062] Of course, this invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A lower transmission lock, characterized in that, include: Casing (100); A drive module (200) is disposed in the housing (100) and is provided with a rotatable lever (210); The locking module includes a driving member (300) disposed on the housing (100) and a locking member (400) disposed on the driving member (300) and extending downward. The driving member (300) is capable of sliding in the up and down direction, and a driving structure is provided between the driving member (300) and the toggle block (210). A limiting member (500) is movably disposed to the housing (100). The limiting member (500) can be moved to an unlocked position and a locked position. A positioning structure is provided between the limiting member (500) and the driving member (300). When the toggle block (210) rotates, it can drive the drive member (300) to move up or down through the drive structure. The limiting member (500) can be reset to the locked position and the drive member (300) can be locked through the positioning structure. When the toggle block (210) drives the drive member (300) to move up or down through the drive structure, the toggle block (210) can drive the limiting member (500) to move to the unlocked position. The positioning structure releases the lock on the drive member (300).

2. The lower transmission lock according to claim 1, characterized in that: The driving structure includes a first driving part (310), a second driving part (320) and a third driving part (330) spaced apart in the vertical direction on the driving member (300). The paddle (210) can push the first driving part (310) and the second driving part (320) upward to drive the driving member (300) to move upward, and the paddle (210) can push the second driving part (320) and the third driving part (330) downward to drive the driving member (300) to move downward.

3. The lower transmission lock according to claim 1, characterized in that: The limiting member (500) is provided with a pushing part (510). When the toggle block (210) drives the driving member (300) to move up or down through the driving structure, the toggle block (210) pushes the pushing part (510) to make the limiting member (500) move laterally to the unlocking position.

4. The lower transmission lock according to claim 1, characterized in that: A torsion spring (120) is provided between the limiting member (500) and the housing (100), and the torsion spring (120) can reset the limiting member (500) to the locked position.

5. The lower transmission lock according to claim 1, characterized in that: The driving member (300) is provided with an inner frame hole (301). The positioning structure includes a first limiting part (350) and a second limiting part (360) spaced apart along the vertical direction on the side wall of the inner frame hole (301). A first limiting groove (351) is formed between the first limiting part (350) and the upper wall (301a) of the inner frame hole (301). A second limiting groove (352) is formed between the first limiting part (350) and the second limiting part (360). A third limiting groove (353) is formed between the second limiting part (360) and the lower wall (301b) of the inner frame hole (301). 500) is provided with a locking part (520) corresponding to the first limiting groove (351), the second limiting groove (352) and the third limiting groove (353). When the limiting member (500) is in the locked position, the locking part (520) is locked into the first limiting groove (351), the second limiting groove (352) or the third limiting groove (353). The push block (210) can push the limiting member (500) to move laterally to the unlock position, so that the locking part (520) is disengaged from the first limiting groove (351), the second limiting groove (352) or the third limiting groove (353).

6. The lower transmission lock according to claim 5, characterized in that: The upper and / or lower parts of the first limiting part (350) and the second limiting part (360) are provided with guide surface groups, which can guide the locking part (520) to slide into the first limiting groove (351), the second limiting groove (352) or the third limiting groove (353).

7. The lower transmission lock according to claim 6, characterized in that: The upper parts of the first limiting part (350) and the second limiting part (360) are respectively provided with the guide surface group. The guide surface group includes a first horizontal surface (361), a first inclined surface (363) and a second horizontal surface (362). The second horizontal surface (362) is located at the root of the first limiting part (350) and the second limiting part (360). The first horizontal surface (361) is located at the end of the first limiting part (350) and the second limiting part (360). The second horizontal surface (362) is higher than the first horizontal surface (361). The first inclined surface (363) connects the first horizontal surface (361) and the second horizontal surface (362).

8. The lower transmission lock according to claim 6, characterized in that: The lower portions of the first limiting portion (350) and the second limiting portion (360) are respectively provided with the guide surface group, the guide surface group including a second inclined surface (364), the second inclined surface (364) extends obliquely downward from the ends of the first limiting portion (350) and the second limiting portion (360) to the root of the first limiting portion (350) and the second limiting portion (360).

9. The lower transmission lock according to claim 1, characterized in that: The positioning structure includes at least one limiting part disposed on the driving member (300) and extending in the horizontal direction. The limiting member (500) is provided with a locking part (520) that can abut against the upper part of the limiting part. The upper part of the limiting part is provided with a guide surface group. The guide surface group includes a first horizontal surface (361), a first inclined surface (363), and a second horizontal surface (362). The second horizontal surface (362) is disposed at the root of the limiting part, the first horizontal surface (361) is disposed at the end of the limiting part, the second horizontal surface (362) is higher than the first horizontal surface (361), and the first inclined surface (363) connects the first horizontal surface (361) and the second horizontal surface (362).

10. The lower transmission lock according to claim 1, characterized in that: The positioning structure includes at least one limiting part disposed on the driving member (300) and extending in the horizontal direction. The limiting member (500) is provided with a locking part (520) that can abut against the lower part of the limiting part. The lower part of the limiting part is provided with a guide surface group. The guide surface group includes a second inclined surface (364). The second inclined surface (364) extends obliquely downward from the end of the limiting part to the root of the limiting part.

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