CN217028446U - Lock body capable of limiting safety bolt to automatically lock door - Google Patents

Abstract

The utility model discloses a lock body capable of limiting a safety tongue to automatically lock a door, which comprises a lock shell, a safety tongue assembly, a safety thumb-tab, a torsion spring and a clamping plate. The lock shell is provided with an installation cavity, and one side wall of the installation cavity is provided with a tongue hole; the safety tongue component is slidably arranged in the mounting cavity, one end of the safety tongue component is inserted into the tongue hole and can extend out of the lock shell, and the other end of the safety tongue component is provided with a shifting groove; the safety shifting peach is rotatably arranged in the mounting cavity and is connected with a shifting piece, the shifting piece is embedded in the shifting groove, and the shifting piece is matched with the shifting groove to drive the safety tongue assembly to slide; the torsional spring is arranged in the mounting cavity, one end of the torsional spring is connected with the lock shell, and the other end of the torsional spring is mounted on the poking piece or the safety tongue component; a limiting structure is arranged between the torsion spring and the lock shell and used for limiting one end of the torsion spring pushing the safety tongue assembly to extend out of the lock shell. The lock body provided by the utility model can avoid the situation that the safety tongue automatically pops out of the back locking door.

Description

Lock body capable of limiting safety bolt to automatically lock door

Technical Field

The utility model relates to the technical field of lock bodies, in particular to a lock body capable of limiting a safety bolt to automatically lock a door.

Background

The existing lock body is generally provided with a safety tongue, a torsion spring is arranged between the safety tongue and a lock shell of the lock body, and when the lock body is vibrated to a certain degree, the torsion spring automatically drives the safety tongue to pop out. Due to the design mode, when the door is accidentally closed and shakes to a certain degree due to wind blowing, accidental pushing of children and the like, the situation that the safety tongue automatically pops up to unlock the door can happen, and if no adult is in the room, the situation that children are unlocked indoors can happen, so that certain potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a lock body capable of limiting a safety bolt to automatically lock a door, which can avoid the situation that the safety bolt automatically pops out to lock the door reversely and reduce potential safety hazards.

The utility model provides a lock body capable of limiting a safety tongue to automatically lock a door, which comprises a lock shell, a safety tongue assembly, a safety thumb-piece, a torsion spring and a clamping plate. The lock shell is provided with an installation cavity, and a tongue hole is formed in one side wall of the installation cavity; the safety tongue assembly is slidably arranged in the mounting cavity, one end of the safety tongue assembly is inserted into the tongue hole and can extend out of the lock shell, and the other end of the safety tongue assembly is provided with a shifting groove; the safety shifting peach is rotatably arranged in the mounting cavity and connected with a shifting piece, the shifting piece is embedded in the shifting groove, and the shifting piece is matched with the shifting groove to drive the safety tongue assembly to slide; the torsional spring is arranged in the mounting cavity, one end of the torsional spring is connected with the lock shell, and the other end of the torsional spring is mounted on the toggle piece or the safety tongue component; the safety lock is characterized in that a limiting structure is arranged between the torsion spring and the lock shell and used for limiting the torsion spring to push one end of the safety tongue component to extend out of the lock shell.

The lock body capable of limiting the safety bolt to automatically lock the door according to the embodiment of the utility model at least has the following beneficial effects: when the door is accidentally closed and shakes to a certain extent due to wind blowing or accidental pushing of children and the like, one end of the safety tongue component is automatically driven by the torsion spring to move towards the outside of the lock shell, and the limiting structure can limit the torsion spring to push one end of the safety tongue component to extend out of the lock shell, so that the situation that the safety tongue automatically pops out of the anti-locking door is avoided, and potential safety hazards are reduced; because the torsion spring can elastically deform, when the safety bolt component is needed to lock the door reversely, a user only needs to spend certain strength to rotate the safety shifting peach, and one end of the safety bolt component can be pushed to extend out of the lock shell to complete the reverse locking.

According to some embodiments of the utility model, the limiting structure comprises a catch plate, the catch plate is arranged in the mounting cavity and located at one side of the torsion spring, and the catch plate can be in fit abutment with the torsion spring.

According to some embodiments of the utility model, the safety tongue assembly comprises a lock tongue and a push plate, the push plate is slidably disposed in the mounting cavity, the lock tongue is mounted at one end of the push plate, the lock tongue is inserted into the tongue hole and can extend out of the lock shell, and the toggle groove is disposed at the other end of the push plate.

According to some embodiments of the utility model, a guide structure is arranged between the push plate and the lock housing.

According to some embodiments of the present invention, the guiding structure includes a guiding groove and a guiding post, one of the guiding groove and the guiding post is disposed on the lock housing, the other guiding groove is disposed on the push plate, the guiding groove is disposed along a moving direction of the push plate, and the guiding post is inserted into the guiding groove.

According to some embodiments of the utility model, the guide groove is arranged on the push plate, the guide post is arranged on the side wall of the installation cavity and penetrates through the guide groove, the guide post is provided with a step, the step can be abutted against the push plate, the clamping plate is arranged on one side of the push plate, the clamping plate is provided with a blocking piece, the blocking piece is arranged on one side, away from the step, of the push plate, and the blocking piece can be abutted against the push plate.

According to some embodiments of the utility model, the lock case comprises a first case, a second case and a lining plate, the first case covers the front end of the second case, the lining plate is connected with the left ends of the first case and the second case, the first case, the second case and the lining plate enclose to form the installation cavity, the tongue hole is formed in the lining plate, the safety tongue component can slide left and right, and the left end of the safety tongue component is inserted into the tongue hole.

According to some embodiments of the utility model, the front side and the rear side of the clamping plate are provided with clamping strips, the first shell and the second shell are provided with slots, and the two clamping strips are inserted into the two slots in a one-to-one correspondence manner.

According to some embodiments of the utility model, a positioning structure is disposed between the first housing and the second housing.

According to some embodiments of the present invention, the positioning structures are provided with a plurality of sets, each set of the positioning structures includes a positioning groove and a positioning protrusion, one of the positioning groove and the positioning protrusion is disposed on the periphery of the first housing, the other one of the positioning groove and the positioning protrusion is disposed on the periphery of the second housing, and the positioning protrusion is embedded in the positioning groove.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a lock body for limiting the movement of a safety bolt assembly (when a torsion spring pushes the safety bolt assembly) of an automatic door locking device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a lock body (when the latch assembly is ejected out of the door) of an automatic door with a restricted latch according to an embodiment of the present invention;

FIG. 3 is an exploded view of an embodiment of the present invention showing a lock body capable of limiting the safety catch to automatically lock the door;

FIG. 4 is a schematic view of an exterior of a lock body for automatically locking a door with a restricted strike bolt according to an embodiment of the present invention;

FIG. 5 is a schematic view of a card according to an embodiment of the utility model;

FIG. 6 is a schematic view of a guide post according to an embodiment of the present invention.

Reference numerals are as follows:

the lock case 100, the first case 110, the second case 120, the lining plate 130, the mounting cavity 140, the tongue hole 131, the slot 150, the insertion hole 160, the positioning groove 170, the positioning protrusion 180, the safety tongue assembly 200, the locking tongue 210, the push plate 220, the toggle groove 221, the guide groove 222, the safety thumb wheel 300, the toggle piece 310, the torsion spring 400, the snap plate 500, the catch plate 510, the snap strip 520, the guide post 600, and the step 610.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to 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 illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.

Referring to fig. 1 to 4, an embodiment of the utility model provides a lock body capable of limiting a safety bolt to automatically lock a door, including a lock case 100, a safety bolt assembly 200, a safety thumb lever 300, a torsion spring 400, and a catch plate 500. The lock shell 100 is provided with a mounting cavity 140, and a tongue hole 131 is formed in one side wall of the mounting cavity 140; the safety tongue assembly 200 is slidably arranged in the mounting cavity 140, one end of the safety tongue assembly 200 is inserted into the tongue hole 131 and can extend out of the lock shell 100, and the other end of the safety tongue assembly 200 is provided with a toggle groove 221; the safety shifting peach 300 is rotatably arranged in the installation cavity 140, the safety shifting peach 300 is connected with a shifting piece 310, the shifting piece 310 is embedded in the shifting groove 221, and the shifting piece 310 is matched with the shifting groove 221 so as to drive the safety tongue assembly 200 to slide; the torsion spring 400 is arranged in the installation cavity 140, one end of the torsion spring 400 is connected with the lock shell 100, and the other end is installed on the toggle piece 310 or the safety tongue assembly 200; a limiting structure is arranged between the torsion spring 400 and the lock case 100, and the limiting structure is used for limiting the torsion spring 400 to push one end of the safety tongue assembly 200 to extend out of the lock case 100.

When the door is accidentally closed and vibrates to a certain extent due to wind blowing, accidental pushing of a child and the like, the torsion spring 400 can automatically drive one end of the safety tongue assembly 200 to move towards the outside of the lock shell 100, and the limiting structure can limit the torsion spring 400 from pushing one end of the safety tongue assembly 200 to extend out of the lock shell 100, so that the situation that the safety tongue automatically pops out of the anti-locking door is avoided, and potential safety hazards are reduced; since the torsion spring 400 itself can elastically deform, when the safety tongue assembly 200 needs to be used to unlock the door, the user only needs to spend a certain amount of force to rotate the safety thumb piece 300, and then one end of the safety tongue assembly 200 can be pushed to extend out of the lock case 100 to complete unlocking.

Specifically, referring to fig. 1 to 3, the limiting structure includes a clamping plate 500, the clamping plate 500 is disposed in the mounting cavity 140 and located on one side of the torsion spring 400, and the clamping plate 500 can be abutted to the torsion spring 400 in a matching manner. When the torsion spring 400 automatically drives one end of the safety tongue assembly 200 to move outwards the lock case 100, the clamping plate 500 interferes and abuts with the torsion spring 400, and the torsion spring 400 cannot continuously push the safety tongue assembly 200, so that the torsion spring 400 is limited to push one end of the safety tongue assembly 200 to extend out of the lock case 100. For example, in the torsion spring 400 in fig. 1, when the torsion spring 400 pushes the safety tongue assembly 200 to move outward the lock case 100, the torsion spring 400 first swings downward, the clamping plate 500 is located at the lower side of the torsion spring 400, and when the clamping plate 500 is interfered and abutted with the torsion spring 400, the torsion spring 400 cannot continuously swing downward, so that the torsion spring 400 cannot continuously push one end of the safety tongue assembly 200 to move outward the lock case 100.

It should be noted that the above-mentioned limiting structure may be arranged in other manners, for example, in some embodiments, the limiting structure may be arranged as a rope, one end of the rope is connected to the lock case 100, and the other end of the rope is connected to the torsion spring 400, and when the torsion spring 400 pushes one end of the safety tongue assembly 200 to move out of the lock case 100, the rope is tightened, so as to prevent the torsion spring 400 from continuously pushing the safety tongue assembly 200 to move out of the lock case 100.

It is conceivable that, referring to fig. 1 to 3, the safety tongue assembly 200 includes a locking tongue 210 and a push plate 220, the push plate 220 is slidably disposed in the mounting cavity 140, the locking tongue 210 is mounted at one end of the push plate 220, the locking tongue 210 is inserted into the tongue hole 131 and can extend out of the lock case 100, and the toggle groove 221 is disposed at the other end of the push plate 220. The lock tongue 210 and the push plate 220 can be formed separately, so that the processing is convenient; in addition, the shape of the locking tongue 210 is various, for example, the shape of the locking tongue 210 may be circular or square, and in the implementation process, a correspondingly shaped locking tongue 210 may be installed on the push plate 220 according to the shape of the tongue hole 131.

It is conceivable that a guide structure is provided between the push plate 220 and the lock case 100.

Specifically, referring to fig. 1 to 4, the guiding structure includes a guiding slot 222 and a guiding post 600, one of the guiding slot 222 and the guiding post 600 is disposed in the lock case 100, the other is disposed in the push plate 220, the guiding slot 222 is disposed along the moving direction of the push plate 220, and the guiding post 600 is inserted into the guiding slot 222. As shown in fig. 2, when the push plate 220 is slidably disposed in the mounting cavity 140 from left to right, the inner wall of the tongue hole 131 is engaged with the tongue 210, and the guide post 600 is engaged with the guide groove 222, so as to prevent the push plate 220 from swinging up and down during sliding, thereby ensuring smooth sliding of the push plate 220.

Specifically, referring to fig. 1 to 6, the guide groove 222 is disposed in the push plate 220, the guide post 600 is mounted on the side wall of the mounting cavity 140 and penetrates through the guide groove 222, the guide post 600 is provided with a step 610, the step 610 can abut against the push plate 220, the clamping plate 500 is located on one side of the push plate 220, the clamping plate 500 is provided with a blocking piece 510, the blocking piece 510 is located on one side of the push plate 220 deviating from the step 610, and the blocking piece 510 can abut against the push plate 220. As shown in fig. 2, when the push plate 220 is disposed in the installation cavity 140 in a left-right sliding manner, the step 610 and the blocking piece 510 are respectively located at the front side and the rear side of the push plate 220, and the arrangement of the blocking piece 510 and the step 610 can reduce the degree of the front-back shaking of the push plate 220 in the sliding process, so that the push plate 220 can slide smoothly.

It can be imagined that, referring to fig. 3 and 4, the lock case 100 includes a first housing 110, a second housing 120 and a lining plate 130, the first housing 110 is covered on the front end of the second housing 120, the lining plate 130 is connected with the left ends of the first housing 110 and the second housing 120, the first housing 110, the second housing 120 and the lining plate 130 enclose to form an installation cavity 140, a tongue hole 131 is arranged on the lining plate 130, wherein the safety tongue assembly 200 can slide left and right, the left end of the safety tongue assembly 200 is inserted into the tongue hole 131, and through the arrangement, the installation of the safety tongue assembly 200, the torsion spring 400 and other structures in the installation cavity 140 is facilitated.

Specifically, referring to fig. 3 and 5, the front and rear sides of the clamping plate 500 are provided with clamping strips 520, the first casing 110 and the second casing 120 are provided with slots 150, and the two clamping strips 520 are inserted into the two slots 150 in a one-to-one correspondence manner, so that the clamping plate 500 can be fixed in the mounting cavity 140, and the clamping plate 500 is convenient to mount and dismount.

It will be appreciated that a locating structure is provided between the first housing 110 and the second housing 120 to ensure that the two can be assembled correctly.

Specifically, referring to fig. 3, each of the positioning structures includes a positioning groove 170 and a positioning protrusion 180, one of the positioning groove 170 and the positioning protrusion 180 is disposed on the periphery of the first casing 110, the other one of the positioning groove 170 and the positioning protrusion 180 is disposed on the periphery of the second casing 120, the positioning protrusion 180 is embedded in the positioning groove 170, and the positioning protrusion 180 and the positioning groove 170 are matched to accurately assemble the first casing 110 and the second casing 120 together, thereby avoiding the misalignment between the two.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The present embodiment has been described in detail with reference to the drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the present invention.

Claims (10)

1. A lock body capable of limiting a safety bolt to automatically lock a door is characterized by comprising:

the lock shell (100) is provided with an installation cavity (140), and a tongue hole (131) is formed in one side wall of the installation cavity (140);

the safety tongue assembly (200) is slidably arranged in the mounting cavity (140), one end of the safety tongue assembly (200) is inserted into the tongue hole (131) and can extend out of the lock shell (100), and the other end of the safety tongue assembly (200) is provided with a shifting groove (221);

the safety shifting peach (300) is rotatably arranged in the installation cavity (140), the safety shifting peach (300) is connected with a shifting piece (310), one end of the shifting piece (310) is embedded in the shifting groove (221), and the shifting piece (310) is matched with the shifting groove (221) to drive the safety tongue component (200) to slide;

the torsion spring (400) is arranged in the mounting cavity (140), one end of the torsion spring (400) is connected with the lock shell (100), and the other end of the torsion spring is mounted on the toggle piece (310) or the safety tongue assembly (200);

the safety lock is characterized in that a limiting structure is arranged between the torsion spring (400) and the lock shell (100), and the limiting structure is used for limiting the torsion spring (400) to push one end of the safety tongue assembly (200) to extend out of the lock shell (100).

2. A lock body of an automatic door lock with a limitable safety tongue as claimed in claim 1, wherein the limitable structure comprises a clamping plate (500), the clamping plate (500) is disposed in the installation cavity (140) and is located at one side of the torsion spring (400), and the clamping plate (500) can be in fit abutment with the torsion spring (400).

3. The lock body of claim 2, wherein the safety tongue assembly (200) comprises a lock tongue (210) and a push plate (220), the push plate (220) is slidably disposed in the mounting cavity (140), the lock tongue (210) is mounted at one end of the push plate (220), the lock tongue (210) is inserted into the tongue hole (131) and can extend out of the lock case (100), and the toggle groove (221) is disposed at the other end of the push plate (220).

4. A lock body of an automatic door capable of limiting the safety catch according to claim 3, characterized in that a guiding structure is provided between the push plate (220) and the lock case (100).

5. A lock body of an automatic door lock with a limitable safety tongue as claimed in claim 4, wherein said guiding structure comprises a guiding slot (222) and a guiding post (600), one of said guiding slot (222) and said guiding post (600) is disposed on said lock shell (100), the other is disposed on said push plate (220), said guiding slot (222) is disposed along the moving direction of said push plate (220), and said guiding post (600) is inserted into said guiding slot (222).

6. A lock body of an automatic door locking device with a limitable safety tongue according to claim 5, characterized in that the guide groove (222) is provided on the push plate (220), the guide post (600) is mounted on the side wall of the installation cavity (140) and penetrates through the guide groove (222), the guide post (600) is provided with a step (610), the step (610) can abut against one side surface of the push plate (220), the clamping plate (500) is located on one side of the push plate (220), the clamping plate (500) is provided with a blocking piece (510), the blocking piece (510) is located on one side of the push plate (220) departing from the step (610), and the blocking piece (510) can abut against the push plate (220).

7. The lock body of one of claims 2 to 6, wherein the lock case (100) comprises a first shell (110), a second shell (120) and a lining plate (130), the first shell (110) is covered on the front end of the second shell (120), the lining plate (130) is connected with the left ends of the first shell (110) and the second shell (120), the first shell (110), the second shell (120) and the lining plate (130) enclose to form the installation cavity (140), the tongue hole (131) is formed in the lining plate (130), the safety tongue assembly (200) can slide left and right, and the left end of the safety tongue assembly (200) is inserted into the tongue hole (131).

8. The lock body of the automatic door locking device with the limitable safety bolt is characterized in that the front side and the rear side of the clamping plate (500) are provided with clamping strips (520), the first shell (110) and the second shell (120) are provided with inserting grooves (150), and the two clamping strips (520) are inserted into the two inserting grooves (150) in a one-to-one correspondence manner.

9. The lock body of the automatic door locking with limitable safety bolt of claim 7 is characterized in that a positioning structure is arranged between the first shell (110) and the second shell (120).

10. The lock body of claim 9, wherein the positioning structures are provided in multiple sets, each set of the positioning structures includes a positioning groove (170) and a positioning protrusion (180), one of the positioning groove (170) and the positioning protrusion (180) is disposed on the periphery of the first housing (110), the other is disposed on the periphery of the second housing (120), and the positioning protrusion (180) is embedded in the positioning groove (170).

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