阅读说明：本技术 可调式锁护扣 (Adjustable lock protection buckle ) 是由 刘诗兵 邓德万 于 2021-07-30 设计创作，主要内容包括：本发明公开了可调式锁护扣,通过在门框后侧开设调节口,并在门框内腔中设置能够驱动所述调节片竖直滑动的齿条板和驱动齿轮,避免了需要多次关闭门扇观察锁舌与锁舌孔是否对准,且需要依靠有经验的安装人员来对锁舌调节片的位置进行微调,需要较精准把握锁舌调节片的调节方向和调节距离；本方案仅需调节一次,并将驱动齿轮固定即可,能够在较大程度上缩短安装时间；采用的锁舌的尖端设置有第一转动筒,当锁舌伸入到锁舌孔内后,所述第一转动筒能够伸入到齿条板上的槽体中实现配合,此时锁舌对齿条板产生支撑和位置固定的作用,在具体实施时,无需采用双手对齿条板或驱动齿轮进行固定,仅需单手即能完成固定操作。(The invention discloses an adjustable lock protection buckle.A regulating opening is formed in the rear side of a door frame, and a rack plate and a driving gear which can drive a regulating piece to vertically slide are arranged in an inner cavity of the door frame, so that the situation that a door leaf needs to be closed for many times to observe whether a lock tongue is aligned with a lock tongue hole or not, the position of the lock tongue regulating piece needs to be finely adjusted by an experienced installer, and the regulating direction and the regulating distance of the lock tongue regulating piece need to be accurately controlled is avoided; the scheme only needs to be adjusted once, and the driving gear is fixed, so that the installation time can be shortened to a greater extent; the pointed end of the spring bolt of adoption is provided with first a section of thick bamboo that rotates, stretches into the downthehole back of spring bolt when the spring bolt, first a section of thick bamboo that rotates realizes the cooperation in can stretching into the cell body on the rack board, and the spring bolt produces the effect of supporting and rigidity to the rack board this moment, when concrete implementation, need not to adopt both hands to fix rack board or drive gear, only needs the one hand can accomplish fixed operation.)

1. Lock is protected and is detained with adjustable, including installing spring bolt adjustment sheet (2) on door frame (1), be provided with spring bolt hole (231), its characterized in that on spring bolt adjustment sheet (2): the lock tongue adjusting sheet (2) is connected with a rack plate (4), the rack plate (4) is positioned in a door frame inner cavity (11) of a door frame (1), a driving gear (5) is further arranged in the door frame inner cavity (11), and gear teeth of the driving gear (5) are meshed with racks on the rack plate (4); when the driving gear (5) rotates, the rack plate (4) can drive the bolt adjusting sheet (2) to vertically slide along the surface of the door frame (1); the rear side of the door frame (1) is provided with an adjusting opening (3), and the adjusting opening (3) can extend into an inner cavity (11) of the door frame to drive the driving gear (5).

2. The adjustable lock guard of claim 1, wherein: the lock is characterized by further comprising a lock tongue (6), a first rotating cylinder (61) is arranged at the tip end, far away from the lock body (65), of the lock tongue (6), and a groove body (41) is arranged on one side, far away from the driving gear (5), of the rack plate (4); the first rotating cylinder (61) can be embedded into the groove body (41) and matched with the groove body.

3. The adjustable lock guard of claim 1 or 2, wherein: the anti-theft lock further comprises a second rotating cylinder (63) embedded into the arc surface (62) of the lock bolt (6), the top end of the surface, located outside the lock bolt (6), of the second rotating cylinder (63) is flush with the surface of the lock body (65), and an anti-theft gap (64) is formed between the second rotating cylinder (63) and the end of the lock body (65); the anti-theft notch (64) can be aligned with the door seam when the door leaf is closed.

4. The adjustable lock guard of claim 3, wherein: the driving gear (5) is sleeved on the connecting shaft (55), one end of the connecting shaft (55) is fixedly connected with the inner wall of the inner cavity (11) of the door frame, a connecting cylinder (51) is fixedly arranged at one end, located at the adjusting opening (3), of the connecting shaft (55), a rotating cylinder (52) is sleeved on the connecting cylinder (51), and the rotating cylinder (52) is in threaded connection with the outer surface of the connecting cylinder (51); an annular groove (57) is formed in the driving gear (5), and the end of the rotary cylinder (52) can extend into the annular groove (57) and is in contact fit with the annular groove (57) after rotating.

5. The adjustable lock guard of claim 4, wherein: the connecting shaft (55) extends from the center of the surface of the connecting cylinder (51) to the direction of the adjusting opening (3), a sleeve (56) is arranged at the end part of the connecting shaft (55) in the direction of the adjusting opening (3), the sleeve (56) can rotate around the axis of the connecting shaft (55), the sleeve (56) is fixedly connected with the driving gear (5) through a driving rod (561), and a rotating handle (562) is arranged on the sleeve (56).

6. The adjustable lock guard of claim 1 or 5, wherein: the inner side of the door frame (1) is provided with a mounting cavity (21), two sides of the mounting cavity (21) are respectively provided with a guide rail (22), two sides of the inner surface of the bolt adjusting sheet (2) are provided with sliding blocks capable of being in sliding connection with the guide rails (22), and the sliding blocks on the bolt adjusting sheet (2) can slide along the guide rails (22); the outer surface of the bolt adjusting sheet (2) is flush with the inner side surface of the door frame (1).

7. The adjustable lock guard of claim 1 or 4, wherein: the door frame is characterized by further comprising a fixed claw arranged in the inner cavity (11) of the door frame, wherein the fixed claw is arc-shaped, and one end of the fixed claw is hinged with the inner cavity (11) of the door frame; the other end of the fixed claw is provided with a rotating ring, and a fixed rod can be arranged in the rotating ring; in an initial state, the other end of the fixed claw is detachably fixed with an inner cavity (11) of the door frame through the fixed rod, the fixed claw is separated from the driving gear (5), when the fixed rod on the fixed claw is detached, the fixed claw rotates, and the rotating ring of the fixed claw moves to the interval between the gear teeth and is in contact fit with the surface of the gear teeth; the fixing device comprises at least two fixing claws, wherein the fixing claws comprise a first fixing claw (53) and a second fixing claw (54), and the rotating directions of the first fixing claw (53) and the second fixing claw (54) after the fixing rod is detached are opposite.

Technical Field

The invention relates to the technical field of door lock installation, in particular to an adjustable lock protection buckle.

Background

The existing lock protection buckles on the security doors in the market generally adopt non-adjustable lock protection buckles, and once the lock protection buckles cause the active leaf to be difficult to unlock due to installation or processing errors, or the active leaf can shake inside and outside after the doors are locked; in the prior art, in order to solve the problems of difficult unlocking and easy shaking, the flanging forming is designed by using a die, the tightness of the door lock is adjusted after the flanging forming, and an auxiliary tool is required to be used for knocking in the adjusting process to realize the adjustment;

in the prior art, a device for adjusting an indoor door lock opening (CN211949953U) is proposed in 2019, month 9 and 16, which can ensure that a door can be successfully installed and debugged at one time without repeatedly repairing or replacing a lock opening sheet (a lock protection buckle), but the applicant finds that in the research process, the scheme needs to close a door leaf for multiple times in the specific implementation process to judge whether a lock tongue is aligned with a lock tongue hole, the vertical deviation of the lock tongue and the lock tongue hole is about, if the lock tongue is not aligned, an adjusting screw needs to be loosened, the position of a lock tongue adjusting sheet needs to be adjusted again, and after the lock tongue is fixed, the door leaf is closed again to observe whether the lock tongue is aligned with the lock tongue hole, and the operation needs to be repeated for multiple times until the lock tongue is matched with the lock tongue hole; therefore, the scheme needs to open and close the door for multiple times, the adjusting screw needs to be loosened and screwed to adjust the position of the bolt adjusting piece, the operation is complex, the adjustment needs to be carried out for multiple times, the adjusting direction of the bolt adjusting piece needs to be judged by depending on the experience of an installer, and therefore the door lock of the anti-theft door is long in installation time and needs to be installed by an experienced installer.

Disclosure of Invention

The invention aims to provide an adjustable lock protection buckle, which can solve the problems that when the position of a lock tongue hole is adjusted, a door leaf needs to be closed for many times to observe whether a lock tongue is aligned with the lock tongue hole, the position of a lock tongue adjusting piece needs to be finely adjusted by experienced installation personnel, the adjusting direction and the adjusting distance of the lock tongue adjusting piece need to be accurately grasped, the installation steps are multiple, the adjusting precision needs to be judged by depending on the accumulated experience of the installation personnel, and the installation time is long.

The invention is realized by the following technical scheme: the adjustable lock protection buckle comprises a lock tongue adjusting piece arranged on a door frame, wherein a lock tongue hole is formed in the lock tongue adjusting piece, the lock tongue adjusting piece is connected with a rack plate, the rack plate is positioned in an inner cavity of the door frame, a driving gear is further arranged in the inner cavity of the door frame, and gear teeth of the driving gear are meshed with a rack on the rack plate; when the driving gear rotates, the rack plate can drive the lock tongue adjusting sheet to vertically slide along the surface of the door frame; the door frame rear side is opened and is equipped with the regulation mouth, can stretch into the door frame inner chamber from the regulation mouth, drives drive gear. The existing fore shaft adjusting device mostly utilizes an adjusting screw to adjust the position of a spring bolt adjusting sheet; however, the applicant has found through long-term research that: when the method is adopted, the lock tongue adjusting piece needs to be fixed firstly, then the door leaf is closed, an installer judges the position between the lock tongue and the lock tongue hole according to installation experience, roughly judges the deviation of the position, then opens the door leaf, after the installer slightly adjusts the position of the lock tongue adjusting piece by loosening an adjusting screw, the lock tongue adjusting piece is fixed, the door leaf is closed again, the positions of the lock tongue and the lock tongue adjusting piece are observed, and the operation is repeated for a plurality of times until the lock tongue is matched with the lock tongue hole; therefore, when judging the positions of the lock tongue and the lock tongue hole, an installer can only rely on visual observation to estimate and adjust the size according to experience, and needs to close the door leaf when observing the position relation of the lock tongue and the lock tongue hole, and needs to open the door leaf when adjusting the lock tongue adjusting piece, because the adjusting screw and the fixing screw are both arranged on the inner side of the door frame; the defects of the prior art are shown as follows: in order to enable the lock tongue and the lock tongue hole to be aligned and matched right, the door leaf needs to be opened and closed for multiple times, and the lock tongue adjusting piece needs to be finely adjusted for multiple times; when the position relation between the lock tongue and the lock tongue hole is determined, the position deviation needs to be judged by the installation experience of an installer, and the fine adjustment of the lock tongue adjusting piece is completely dependent on the installation experience of the installer; the operation steps are more, the installation time is longer, and the requirement on installation personnel is higher; therefore, the applicant has proposed an adjustable lock protection buckle aiming at the above problems, and capable of overcoming the above disadvantages, and specifically implementing the following:

according to the scheme, the bolt hole is formed in the bolt adjusting piece and can be matched with the bolt, and the bolt can penetrate through the bolt hole and enter the inner cavity of the door frame to lock the door; in the specific implementation process, an installation cavity is required to be arranged on the inner side (the side in contact fit with the door leaf) of the door frame, a guide rail is arranged in the installation cavity, and the lock tongue adjusting piece can move in the vertical direction along the guide rail; the outer surface of the lock tongue adjusting sheet is flush with the inner side of the door frame; the door frame is provided with a through hole, the inner surface of the lock tongue adjusting piece is connected with a connecting rod, the connecting rod penetrates through the through hole to enter the inner cavity of the door frame, the end part of the connecting rod, which is positioned in the inner cavity of the door frame, is connected with a rack plate, the rack plate is in a vertical state, one end, which is far away from the connecting rod, of the rack plate is provided with a rack, a driving gear is arranged in the inner cavity of the door frame, the gear teeth of the determined gear are meshed with the rack, and the rear side (the side, which is positioned in a room, of the door frame is provided with an adjusting hole; an installer can rotate the driving gear in the adjusting opening, and when the driving gear rotates clockwise, the rack plate moves upwards and drives the lock tongue adjusting piece to move upwards; when the driving gear rotates anticlockwise, the rack plate moves downwards and drives the lock tongue adjusting piece to move downwards, so that the lock tongue adjusting piece slides in the vertical direction along the bottom surface of the mounting cavity, and the position of a lock tongue hole in the lock tongue adjusting piece is adjusted; the actual installation process is as follows: closing the door lock provided with the lock tongue, wherein the lock tongue is extruded by the inner side of the door frame and is in a retraction state; an installer opens an adjusting opening on the rear side of a door frame at the inner side of a room, can observe a driving gear from the adjusting opening, and adopts tools or manually enables the driving gear to rotate clockwise or anticlockwise (according to specific conditions), when the driving gear rotates to a certain angle, a lock tongue hole is just aligned with a lock tongue after a lock tongue adjusting piece moves, the lock tongue instantly extends into the lock tongue hole, after the installer hears sound generated by the lock tongue and determines that the lock tongue is matched with the lock tongue hole, the lock tongue plays a fixed role in the position of the lock tongue adjusting piece, the driving gear or a rack plate is fixed, and after the adjusting opening is closed, the door lock of the security door is installed; the scheme has the advantages that when the lock body and the lock bolt hole are misaligned, the lock bolt is in a retraction state; when the bolt and the bolt hole are aligned, the moment that the bolt extends into the bolt hole can make a sound, so that the sound is used as a matching signal of the bolt and the bolt hole, and the visual observation is not needed; when the lock tongue extends into the lock tongue hole, the lock tongue plays a certain fixing role on the position of the lock tongue adjusting piece, and at the moment, under the condition that the lock tongue adjusting piece is preliminarily fixed by the lock tongue, the driving gear or the rack plate is fixed, so that the lock tongue and the lock tongue hole can be always aligned, and the door lock of the anti-theft door can be normally used; therefore, the door leaf does not need to be opened and closed for many times, an installer does not need to rely on experience to judge the deviation amount of the lock tongue and the lock tongue hole, only needs to roughly observe whether the door leaf needs to be adjusted upwards or downwards before the door leaf is closed, the driving gear is slowly rotated after the door leaf is closed, the lock tongue and the lock tongue hole can be naturally aligned in the process of rotating the driving gear, and the adjustment of the lock tongue adjusting piece can be completed only by general installers; in addition, in the prior art, the adjustment is needed for multiple times, and the average time for adjusting one bolt adjusting sheet by a general experienced installer is about 2 minutes; the scheme only needs less than 20 seconds for adjusting and fixing the lock tongue adjusting piece, so that the mounting time can be greatly saved, and the requirement on mounting personnel is low; the adjustment can be completed only at the inner side of the room, and the door leaf does not need to be opened and then the lock tongue adjusting sheet is adjusted; the adjusting mode of the existing bolt adjusting piece is completely changed, a new idea is provided for adjusting the installed door lock, and the door lock has substantial characteristics.

The lock further comprises a lock tongue, a first rotating cylinder is arranged at the tip end, far away from the lock body, of the lock tongue, and a groove body is arranged on one side, far away from the driving gear, of the rack plate; the first rotating cylinder can be embedded into the groove body and matched with the groove body. The applicant finds that if a common lock tongue is adopted, when a door leaf is closed, the tip end of the lock tongue is in a contact state with the outer surface of a lock tongue adjusting sheet, when the lock tongue adjusting sheet moves up and down, the tip end of the lock tongue is easy to scratch on the outer surface of the lock tongue adjusting sheet, the tip end of the lock tongue is in contact with the lock tongue adjusting sheet to have a friction force effect, and the lock tongue per se has a certain blocking effect on the movement of the lock tongue adjusting sheet; therefore, the applicant has made improvements: in the scheme, the lock tongue groove body is a semicircular groove, and the length of the lock tongue groove body is equal to the height of the lock tongue; the first rotary drum on the lock tongue extends into the groove body, so that a certain supporting and fixing effect can be achieved on the rack plate, when the lock tongue is matched with the lock tongue hole, one hand is not needed to stabilize the driving gear, the other hand adopts the fixing assembly to fix the driving gear, and the scheme can be used for fixing only by one hand; and when the door leaf is closed and the lock tongue hole are not aligned, the first rotating cylinder is contacted with the outer surface of the lock tongue adjusting piece, so that the lock tongue and the lock tongue adjusting piece are in rolling friction and are not easy to damage the lock tongue adjusting piece, and the problem found by the research of the applicant is solved.

The lock further comprises a second rotating cylinder embedded into the arc surface of the lock tongue, the top end of the surface of the second rotating cylinder, which is positioned outside the lock tongue, is flush with the surface of the lock body, and an anti-theft gap is formed between the second rotating cylinder and the end part of the lock body; the anti-theft notch can be aligned with the door seam when the door leaf is closed. It should be noted that: the first rotating cylinder and the second rotating cylinder are in a parallel state, the second rotating cylinder is positioned in the cambered surface, the surface of the second rotating cylinder is flush with the surface of the lock body, and an anti-theft gap is formed between the lock body and the second rotating cylinder; in the practical implementation process of the scheme, the existing mode of prying the anti-theft door generally adopts the mode of inserting the clamping piece into the door slot, the thrust action of the clamping piece on the lock tongue is utilized to enable the edge where the clamping piece is inserted to generate increased extrusion force on the arc surface of the lock tongue, and the lock tongue retracts under the action of the force until the lock tongue is separated from the lock tongue hole, so that the door opening is realized; this scheme is when implementing, if insert the card from the crack, the edge of card this moment aligns and contacts with the theftproof breach just, when extrudeing the card, the card edge can rotate a section of thick bamboo contact with the second, turns into the required power of second rotation section of thick bamboo rotation with the card to the extrusion force of cambered surface to this avoids the card to make the spring bolt retract the condition that realizes opening the door.

Furthermore, the driving gear is sleeved on the connecting shaft, one end of the connecting shaft is fixedly connected with the inner wall of the inner cavity of the door frame, a connecting cylinder is fixedly arranged at one end, located at the adjusting opening, of the connecting shaft, a rotating cylinder is sleeved on the connecting cylinder, and the rotating cylinder is in threaded connection with the outer surface of the connecting cylinder; the driving gear is provided with an annular groove, and the end part of the rotary cylinder can extend into the annular groove and is in contact fit with the annular groove after rotating. This scheme is at the in-process of actual implementation, after the spring bolt stretched into the spring bolt hole, the spring bolt has the fixed action to the rack board, the rack board has certain fixed action to drive gear this moment, available clip of installer or hand make rotatory section of thick bamboo rotatory towards the direction at drive gear place this moment, make the tip of rotatory section of thick bamboo imbed and realize the cooperation in drive gear's the ring channel, because the connecting axle, the connecting cylinder is fixed all the time, consequently, after rotatory section of thick bamboo and drive gear contact cooperation, because rotatory section of thick bamboo is threaded connection with the connecting cylinder, certain fixed action can be played to drive gear to the rotatory section of thick bamboo, and then realize the fixed of spring bolt regulating plate.

Preferably, the connecting shaft extends from the center of the surface of the connecting cylinder to the direction of the adjusting opening, a sleeve is arranged at the end part of the connecting shaft in the direction of the adjusting opening, the sleeve can rotate around the axis of the connecting shaft, the sleeve and the driving gear are fixedly connected through a driving rod, and a rotating handle is arranged on the sleeve. This scheme provides a concrete drive mode, and at the concrete implementation in-process, installer from stretching into the regulation mouth with the hand, holds the intraoral rotatory handle of regulation, makes rotatory handle rotatory around the axis of connecting axle, because the both ends of actuating lever respectively with sleeve and drive gear fixed connection, consequently when the sleeve is rotatory, drive gear also toward the equidirectional rotation, consequently installer can adopt simple operation to adjust the position of spring bolt adjustment piece.

Furthermore, an installation cavity is arranged on the inner side of the door frame, guide rails are respectively arranged on two sides of the installation cavity, sliding blocks capable of being in sliding connection with the guide rails are arranged on two sides of the inner surface of the lock tongue adjusting piece, and the sliding blocks on the lock tongue adjusting piece can slide along the guide rails; the outer surface of the bolt adjusting sheet is flush with the inner side surface of the door frame. The applicant finds that if the lock tongue adjusting piece is placed on the inner side of the door frame, the lock tongue adjusting piece is in a protruding state relative to the surface of the door frame, and when the door leaf is closed, the door leaf has a large extrusion effect on the lock tongue adjusting piece, so that the lock tongue adjusting piece is not easy to slide; the applicant has therefore made further improvements: the inner side of the door frame is provided with a mounting cavity, the lock tongue adjusting piece can slide in the mounting cavity, the lock tongue adjusting piece is embedded into the door frame at the moment, and the outer surface of the lock tongue adjusting piece is flush with the inner side surface of the door frame, so that the lock tongue adjusting piece is not subjected to an overlarge extrusion effect; and set up the guide rail in the installation cavity, the spring bolt adjustment sheet can slide along the guide rail, is in order to further promote the flexibility degree when the spring bolt adjustment sheet is adjusted, reduces because the spring bolt adjustment sheet and the bottom surface of installation cavity produce the barrier effect when moving to the spring bolt adjustment sheet.

The door frame further comprises a fixed claw arranged in the inner cavity of the door frame, the fixed claw is arc-shaped, and one end of the fixed claw is hinged with the inner cavity of the door frame; the other end of the fixed claw is provided with a rotating ring, and a fixed rod can be arranged in the rotating ring; when the fixed rod on the fixed claw is detached, the fixed claw rotates, and the rotating ring of the fixed claw moves to the space between the gear teeth and is in contact fit with the surface of the gear teeth; the fixing device comprises at least two fixing claws, wherein the fixing claws comprise a first fixing claw and a second fixing claw, and the rotating directions of the first fixing claw and the second fixing claw after the fixing rod is detached are opposite. With the fixing claws bent in opposite rotational directions, the rotational movement of the drive gear in the clockwise and counterclockwise directions can be restricted simultaneously.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. according to the invention, the adjusting opening is formed in the rear side of the door frame, and the rack plate and the driving gear which can drive the adjusting piece to vertically slide are arranged in the inner cavity of the door frame, so that the situation that in the prior art, a door leaf needs to be closed for many times to observe whether a lock tongue is aligned with a lock tongue hole, and the position of the lock tongue adjusting piece needs to be finely adjusted by an experienced installer, the adjusting direction and the adjusting distance of the lock tongue adjusting piece need to be accurately grasped, the number of installation steps is large, the adjusting accuracy needs to be judged by depending on experience accumulation of the installer, and the installation time is long is completely avoided; only need adjust once in this scheme to with drive gear fixed can, can shorten installation time to a great extent.

2. The tip of the lock tongue adopted in the invention is provided with the first rotating cylinder, when the lock tongue extends into the lock tongue hole, the first rotating cylinder can extend into the groove body on the rack plate to realize matching, at the moment, the lock tongue plays a role in supporting and fixing the position of the rack plate, and during specific implementation, the rack plate or the driving gear does not need to be fixed by two hands, and only one hand is needed to complete the fixing operation.

3. The lock tongue is provided with the second rotating cylinder, the anti-theft gap is formed between the second rotating cylinder and the end part of the lock body, when the lock tongue is matched with the lock tongue hole, the anti-theft gap is just aligned with the door seam, when a person inserts the clamping piece into the door seam, the edge of the clamping piece firstly extends into the anti-theft gap, and when the thrust on the clamping piece is increased, the extrusion force of the clamping piece on the lock tongue can be converted into the power on the second rotating cylinder, so that the situation that the lock tongue retracts due to overlarge extrusion force of the clamping piece on the lock tongue can be avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention, wherein the schematic sectional view illustrates an adjustable lock keeper installed on a door frame;

FIG. 2 is a schematic structural view of the drive gear assembly;

FIG. 3 is a front view of the lock guard;

FIG. 4 is a schematic view of the position of the lock guard and adjustment opening;

fig. 5 is a schematic structural view of the locking tongue, wherein this view is a top view;

fig. 6 is a schematic structural view of the locking bolt, wherein this view is a front view;

FIG. 7 is a schematic view of the drive gear;

fig. 8 is a schematic view of the installation of the trigger assembly.

Reference numbers and corresponding part names in the drawings:

1-a door frame; 11-inner cavity of door frame; 2-a bolt adjusting piece; 21-mounting a cavity; 22-a guide rail; 23-a sliding plate; 24-a connecting rod; 231-bolt holes; 3-an adjusting port; 31-a conditioning chamber; 32-a cover plate; 4-a rack plate; 41-groove body; 5-driving the gear; 51-a connector barrel; 52-a rotating drum; 53-a first stationary jaw; 54-a second stationary jaw; 55-a connecting shaft; 56-a sleeve; 561-a drive rod; 562-rotating the handle; 57-ring groove; 6-a bolt; 61-a first rotating drum; 62-cambered surface; 63-a second rotary cylinder; 64-anti-theft gap; 65-a lock body; 7-a trigger component; 71-a push rod; 72-magnetic block; 73-struts; 731-adsorption block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1:

as shown in fig. 4, the adjustable lock protection buckle is installed in an installation cavity 21 formed on the inner side surface of the door frame 1; the rear side of the door frame 1, that is, the side located inside the room, is provided with the adjusting opening 3, and after the cover plate 32 of the adjusting opening 3 is turned over, the driving gear 5 located in the door frame inner cavity 11 can be observed, and the driving gear 5 is driven.

Referring to fig. 3, this figure is a state schematic diagram of the adjustable lock protection buckle installed on the inner side of the door frame 1, an installation cavity 21 with a rectangular structure is opened on the inner side of the door frame 1, two vertical guide rails 22 are installed on two sides of the installation cavity 21, the lock tongue adjusting piece 2 has a rectangular structure, a slider capable of being matched with the guide rails 22 is arranged on the inner surface of the lock tongue adjusting piece 2, a through hole is formed in the center of an area where the installation cavity 21 is located on the door frame 1, and no matter how the lock tongue adjusting piece 2 slides, the projection of the lock tongue hole 231 in the horizontal direction can fall into the range where the through hole is located.

Referring to fig. 1, two connecting rods 24 are arranged on the inner surface of the bolt adjusting piece 2, the distance between the connecting rods 24 is equal to the height of the bolt 6 in the vertical direction, that is, the upper surface and the lower surface of the bolt 6 can be respectively in contact fit with the connecting rods 24, one end of each connecting rod 24, which is far away from the bolt adjusting piece 2, is connected with a rack plate 4, one side of the rack plate 4, which faces the bolt adjusting piece 2, is provided with a groove body 41, and the groove body 41 is a semi-circular groove or an arc-shaped groove which can be matched with a first rotating cylinder 61; a rack is arranged on one side, away from the groove body 41, of the rack plate 4, a driving gear 5 is arranged in the door frame inner cavity 11, gear teeth of the driving gear 5 are always meshed with the rack of the rack plate 4, the driving gear 5 is sleeved on the connecting shaft 55, one section of the connecting shaft 55 and the inner wall of the door frame inner cavity 11 are fixing devices, the driving gear 5 can rotate around the axis of the connecting shaft 55, the driving gear 5 is fixed through fixing claws, a first fixing claw 53 and a second fixing claw 54 are respectively arranged above and below the driving gear 5, the first fixing claw 53 and the second fixing claw 54 are arc-shaped plate bodies, one end of each fixing claw is hinged with the inner wall of the door frame inner cavity 11 through a torsion spring, the other end of each fixing claw 53 and the other end of each second fixing claw 54 tend to rotate towards the driving gear 5 in a natural state, and a rotatable rotating ring is arranged at the free end of each fixing claw; when the bolt adjusting sheet 2 is not adjusted, a fixed rod can be inserted into the rotating ring, and the end part of the fixed rod is inserted into a hole of the inner cavity 11 of the door frame, so that the fixed claw and the driving gear 5 are in a separated state; after the bolt adjusting sheet 2 is adjusted, the fixed rod can be pulled out, and after the free end of the fixed claw rotates, the rotating ring on the fixed claw rotates to the space between the gear teeth of the driving gear 5.

Referring to fig. 2 and 7, a connecting cylinder 51 is fixedly arranged on the rotating shaft, a rotating cylinder 52 is sleeved on the connecting cylinder 51, and the rotating cylinder 52 is in threaded connection with the connecting cylinder 51; the rotating cylinder 52 can move towards the driving gear 5 under the condition that the rotating cylinder 52 is screwed, the driving gear 5 is provided with an annular groove 57, when the rotating cylinder 52 moves for a certain distance, the end part of the rotating cylinder 52 can be embedded into the annular groove 57, the rotation of the driving gear 5 is limited, the end part of the rotating shaft far away from the driving gear 5 is sleeved with a sleeve 56, the sleeve 56 can rotate around a connecting shaft 55, the sleeve 56 is provided with a rotating handle 562 which is convenient for facilitating the sleeve 56 to rotate, the sleeve 56 and the side wall of the driving gear 5 are fixedly connected through a driving rod 561, and when the sleeve 56 rotates, the driving gear 5 rotates synchronously.

Referring to fig. 5 and 6, the door lock further comprises a lock tongue 6 and a lock body 65, a first rotating cylinder 61 is arranged at the tip of the lock tongue 6, a second rotating cylinder 63 is arranged on an arc surface 62 of the lock tongue 6, the second rotating cylinder 63 is partially embedded into the arc surface 62, the surface of the second rotating cylinder 63 is flush with the surface of the lock body 65, an anti-theft gap 64 is formed at the end parts of the second rotating cylinder 63 and the lock body 65, and when the door leaf is closed and the lock tongue 6 extends into the lock tongue hole 231 to be matched, the anti-theft gap 64 can be just aligned with the door seam.

The other implementation mode is as follows: the opening of the lock tongue hole 231 is chamfered into a round angle, and the upper end and the lower end of the tip of the lock tongue 6 are both chamfered into round angles, it should be noted that the error between the lock tongue 6 and the lock tongue hole 231 after installation is small, and when the top surface and the bottom surface of the tip are both smooth cambered surfaces 62, the tip is in contact with the round angle of the lock tongue hole 231; when the bolt 6 is fixed, the smooth arc surface 62 of the bolt 6 guides the round corner position of the bolt hole 231; as shown in fig. 1, when the latch tongue 6 is slightly higher than the latch tongue hole 231, the latch tongue 6 can contact with the opening of the latch tongue hole 231, and after being guided by the smooth arc surface 62, the adjusting piece can move upwards, and the latch tongue 6 can be completely inserted into the latch tongue hole 231; when the bolt 6 is inserted into the inner opening of the bolt hole 231, the tip of the bolt 6 pushes the push rod 71, because the push rod 71 is fixedly connected with the magnetic block 72, the magnetic block 72 is adsorbed to the end of the connecting shaft 55, and the two sides of the magnetic block 72 are also provided with the support rods 73, one end of each support rod 73 is connected with the free end of the corresponding fixed claw, and the other end of each support rod 73 is adsorbed to the magnetic block 72; the stay rod 73 can prop open the fixed claw in a natural state, so that the fixed claw is separated from the driving gear 5; when the push rod 71 is pushed by the lock tongue 6, the magnetic block 72 can be separated from the connecting shaft 55, the magnetic block 72 is separated from the supporting rod 73 at the moment, the supporting rod 73 can not spread the fixed claw any more, the free end of the fixed claw is in clearance fit with the gear teeth of the driving gear 5 at the moment, the fixing of the driving gear 5 is realized, and the fixing of the lock tongue adjusting piece 2 is realized; therefore, the scheme does not need to adopt a mode of manually rotating the driving gear 5, directly utilizes the force effect of the bolt 6 extending towards the direction of the bolt hole 231, and utilizes the smooth cambered surface 62 to guide the position of the bolt adjusting sheet 2; make spring bolt 6 can stretch into in the spring bolt hole 231 to adopt and trigger subassembly 7 makes drive gear 5 fixed, and then the mode of fixed spring bolt adjustment sheet 2 can realize automatically that the position control of spring bolt adjustment sheet 2 is with fixed.

The working process of the embodiment specifically comprises the following steps: the installer enters the room and closes the door leaf with the bolt 6 and bolt hole 231 misaligned; then the cover plate 32 of the adjusting opening 3 on the doorframe 1 is opened, an installer (determining the rotating direction according to the actual situation) holds the rotating handle 562 by hand, so that the rotating handle 562 rotates clockwise or counterclockwise around the axis of the connecting shaft 55, at this time, the driving gear 5 drives the rack plate 4 to move up or down, when the bolt 6 is aligned with the bolt hole 231, the bolt 6 automatically extends into the bolt hole 231, the installer can judge whether the bolt 6 is matched with the bolt hole 231 according to the sound, when the bolt 6 extends suddenly, the bolt 6 may collide with the side wall of the bolt hole 231 to generate the sound, the first rotating cylinder 61 at the tip of the bolt 6 collides with the groove body 41 on the rack plate 4 to generate the sound, therefore, after the installer determines that the bolt 6 is matched with the bolt hole 231, the rotating cylinder 52 can rotate by hand or by a nipper, and the rotating cylinder 52 can move, and the end of the rotary cylinder 52 is embedded into the annular groove 57 of the driving gear 5, the end of the rotary cylinder 52 or the inside of the annular groove 57 can be provided with anti-slip measures to increase friction effect so as to ensure that the rotary cylinder 52 has stronger fixing effect on the driving gear 5, at the moment, the fixing rods for fixing the free ends of the first fixing claws 53 and the second fixing claws 54 are drawn out, at the moment, the free ends of the first fixing claws 53 and the second fixing claws 54 are respectively matched with the gear teeth on the driving gear 5 at intervals, so that the rotation of the driving gear 5 is completely prevented, and the fixation and the adjustment and the installation of the door lock of the security door are realized.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.