CN220319306U - Child safety protection lock - Google Patents

Abstract

The utility model discloses a child safety protection lock, which comprises a blocking piece and a base piece connected to a door plate, wherein a first mounting hole is formed in the base piece, a second mounting hole is formed in the blocking piece, the first mounting hole and the hole site of the second mounting hole are oppositely arranged to form a shaft hole, a connecting shaft is arranged in the shaft hole, the blocking piece and the base piece are rotationally connected through the connecting shaft, the connecting shaft can be axially and slidably arranged in the shaft hole, a first convex rib/slot is arranged on the side wall of the connecting shaft, a first slot/convex rib matched with the first convex rib/slot is arranged on the inner wall of the second mounting hole, a second locking part/slot matched with the second locking part/slot is also arranged on the side wall of the connecting shaft, the connecting shaft is pushed to move to one side axially so that the second locking part is inserted into the second slot, the relative rotation of the connecting shaft and the base piece is locked, and the first convex rib is inserted into the first slot to limit the relative rotation of the connecting shaft and the blocking piece.

Description

Child safety protection lock

Technical Field

The utility model relates to a safety protection lock, in particular to a child safety protection lock.

Background

The door lock is a device for locking the door to prevent other people from unlocking the door, the door locks are classified into a plurality of types, the requirements on the door locks are different in various occasions, the common household is generally provided with the anti-theft door lock, the safety is high, the price is low, and each household is provided with the door lock nowadays basically, so that the door lock is used for locking the door of a large door or each room indoors. The door lock of present day can directly open the door lock through the door handle in the door and open the door, this is not big with the hindrance, however when there is children in the family, can appear children to open the door handle by oneself and open the door and run out the family's door, brings various children's potential safety hazards, so needs a door handle auxiliary safety lock to open the door handle for children and make restriction obstacle, promotes family children's factor of safety.

For example, patent CN215255266U discloses a door handle installation lock capable of preventing door opening, which comprises a mounting base, a baffle plate, side keys, a sliding block, a sliding plate spring, a locking block spring and a rotating shaft, wherein a connecting base is symmetrically and fixedly arranged at two sides of one end of the mounting base, a side key installation groove is formed in the outer side of the connecting base, a locking block installation groove is formed in the inner side of the connecting base, the locking block installation groove is communicated with the side key installation groove through a through hole, a connecting block is fixedly arranged at one end of the baffle plate, and a locking block spring installation groove is formed in the middle of the inner part of the connecting block; the safety system is composed of the first lock composed of the sliding block, the sliding plate and the sliding plate spring and the second lock composed of the side keys, the locking block and the locking block spring, so that the door can be opened only by a more complex operation process, and the door handle is better prevented from being easily rotated by children, so that the door is prevented from being opened by mistake.

Problems with existing safety locks: the safety protection lock of the existing door handle can prevent children from opening the door handle through a relatively complex safety mechanism, but the safety protection lock of the door handle can prevent the children from opening the door by mistake, but has a complex structure, the steps become complex and difficult to use when the door is opened and closed, and the safety protection lock is easy to damage and malfunction due to the fact that the independent parts are mutually matched.

Disclosure of Invention

The safety protection lock based on the door handle is complex in structure, the steps become complex and difficult to use when the lock is opened and closed, and the problems that the number of independent parts matched with each other is easy to damage and malfunction are solved.

The technical scheme adopted for solving the technical problems is as follows: the child safety protection lock comprises a blocking piece and a base piece connected with a door plate, wherein a first mounting hole is arranged on the base piece, a second mounting hole is arranged on the blocking piece, the first mounting hole and the hole site of the second mounting hole are oppositely arranged to form a shaft hole, a connecting shaft is arranged in the shaft hole, the blocking piece and the base piece are rotationally connected through the connecting shaft, the child safety protection lock is characterized in that the connecting shaft can be axially and slidably arranged in the shaft hole, a first convex rib/a first slot is arranged on the side wall of the connecting shaft, a first slot/a convex rib matched with the first convex rib/the first slot is arranged on the inner wall of the second mounting hole, a second locking part/a second slot matched with the second locking part/the second slot is arranged on the side wall of the connecting shaft,

the connecting shaft is pushed to move to one side along the axial direction, so that the locking part is inserted into the second slot, the relative rotation of the connecting shaft and the base piece is locked, and at the moment, the convex rib is inserted into the first slot to limit the relative rotation of the connecting shaft and the blocking piece.

The further preferable technical scheme of the utility model is as follows: the base piece includes the connecting plate and sets up the pedestal in connecting plate one side, the pedestal is equipped with two, and the interval sets up about two pedestals, all is equipped with the relative first mounting hole of hole site on two pedestals, is equipped with slot two/locking part on the inner wall of at least one first mounting hole, forms the space that supplies the one end of blocking the piece to get into between two pedestals, is equipped with the second mounting hole on the tip in the blocking piece inserts the space.

The further preferable technical scheme of the utility model is as follows: the locking part is a latch arranged on the side wall of the connecting shaft, and the second slot is a tooth slot arranged on the inner wall of the first mounting hole.

The further preferable technical scheme of the utility model is as follows: the side wall of the connecting shaft is circumferentially provided with a plurality of latch teeth so as to form an outer gear ring on the side wall of the connecting shaft, the inner wall of the first mounting hole is provided with an inner gear ring matched with the outer gear ring, and tooth grooves for inserting the latch teeth are formed between two adjacent teeth of the inner gear ring.

The further preferable technical scheme of the utility model is as follows: the connecting shaft is provided with a first slot which is arranged along the extending direction of the length direction, and the protruding ribs are always inserted in the first slot in a sliding mode.

The further preferable technical scheme of the utility model is as follows: the two ends of the connecting shaft are provided with baffle covers to limit the maximum travel of the axial movement of the connecting shaft, the outer sides of the two seat bodies are respectively provided with a first accommodating groove communicated with the first mounting hole, the baffle covers at the two ends of the connecting shaft are respectively arranged in the first accommodating grooves, the size of the baffle covers is larger than the aperture of the first mounting hole,

when the first baffle cover on one side moves to a position abutting against the bottom of the first accommodating groove in the first direction, the locking part is inserted into the second slot;

when the second blocking cover on the other side moves to a position abutting against the bottom of the first accommodating groove in a second direction opposite to the first direction, the locking part is separated from the second inserting groove.

The further preferable technical scheme of the utility model is as follows: the outer gear ring is arranged at one end of the connecting shaft, the inner wall of the first mounting hole at the end is provided with an inner gear ring matched with the outer gear ring, one side of the blocking piece facing the outer gear ring is provided with a second containing groove communicated with the second mounting hole,

when the connecting shaft moves towards one side, the outer gear ring at the end part of the connecting shaft is meshed with the inner gear ring in the first mounting hole, and when the connecting shaft moves towards the other side opposite to the connecting shaft, the outer gear ring is disengaged from the inner gear ring and moves into the second accommodating groove.

The further preferable technical scheme of the utility model is as follows: the connecting shaft comprises a first shaft body and a second shaft body, the first shaft body and the second shaft body are detachably and coaxially connected together, the first slot is arranged on the first shaft body, and an inserting port for the convex rib to enter the first slot is arranged at one end of the first shaft body, which is connected with the second shaft body.

The further preferable technical scheme of the utility model is as follows: at least one side of the blocking piece is provided with a protruding portion protruding outwards and opposite to the base on the side, the base is a round base, a plurality of first protrusions are arranged on the outer cambered surface of the base opposite to the protruding portion, the first protrusions are arranged around the base, two second protrusions are arranged on the surface, opposite to the base, of the protruding portion, a containing area for containing the first protrusions is formed between the two second protrusions, and the first protrusions can enter the containing area and respectively collide with the two second protrusions.

Another subject is: the child safety protection lock comprises a blocking piece and a base piece connected with a door plate, wherein the base piece is provided with a first mounting hole, the blocking piece is provided with a second mounting hole, the first mounting hole and the hole site of the second mounting hole are oppositely arranged to form a shaft hole, a connecting shaft is arranged in the shaft hole, the blocking piece and the base piece are rotationally connected through the connecting shaft, the child safety protection lock is characterized in that the connecting shaft can be axially and slidably arranged in the shaft hole, a first convex rib/a first slot is arranged on the side wall of the connecting shaft, a first slot/a first convex rib matched with the first convex rib/the first slot is arranged on the inner wall of the first mounting hole, a second locking part/a second slot is also arranged on the side wall of the connecting shaft, a second slot/a second locking part matched with the second locking part/the second slot is arranged on the inner wall of the second mounting hole,

the connecting shaft is pushed to move to one side along the axial direction, so that the locking part is inserted into the second slot, the relative rotation of the connecting shaft and the blocking piece is locked, and at the moment, the convex rib is inserted into the first slot to limit the relative rotation of the connecting shaft and the base piece.

Compared with the prior art, the door handle has the advantages that the door handle comprises the blocking piece and the base piece, the blocking piece and the base piece are connected together through the rotation of the connecting shaft, the first protruding rib/the first inserting groove and the second locking part/the second inserting groove are arranged on the side wall of the connecting shaft, the second inserting groove/the second locking part which is matched with the first inserting groove/the second locking part is arranged on the inner wall of the first installing hole, the first inserting groove/the first protruding rib which is matched with the second inserting groove/the second inserting groove is arranged on the inner wall of the second installing hole, when the relative rotation of the blocking piece and the base piece is needed to be locked, the connecting shaft is pushed to one side to enable the connecting shaft to move, the locking part is inserted into the second inserting groove to lock the relative rotation of the connecting shaft and the blocking piece, and the relative rotation of the blocking piece is locked, the blocking piece and the base piece are prevented from rotating downwards at the lower side of the door handle under the locking state, the blocking piece can prevent children from rotating downwards to open the door.

When a door is accidentally closed by a large person outside the door, the door cannot be opened by unlocking the safety protection lock by the aid of the large person alone, in order to prevent accidents caused by the fact that the large person alone is indoors, the large person can push the door handle positioned on the inner side of the door downwards to rotate on the blocking piece by forcefully breaking the door handle, the thickness of the protruding rib is not thick, when the pressing force of the door handle is larger than the bearing force of the protruding rib, the protruding rib can be broken to enable the blocking piece and the base piece to rotate relatively, and therefore the door handle can be completely rotated to open the door.

Drawings

The utility model will be described in further detail below in connection with the drawings and the preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the utility model. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.

FIG. 1 is a schematic view of a first embodiment of the present utility model in use;

FIG. 2 is a second schematic structural diagram of the first embodiment of the present utility model in use;

FIG. 3 is an exploded view of the components of the present utility model according to one embodiment;

FIG. 4 is a schematic view of a first embodiment of a blocking member;

FIG. 5 is a schematic view of a base member according to an embodiment;

FIG. 6 is a second schematic structural view of a first blocking member according to the first embodiment;

FIG. 7 is a schematic view in longitudinal section of an embodiment;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

FIG. 9 is a schematic view in transverse cross-section taken entirely through a locked state of an embodiment;

FIG. 10 is a schematic view in transverse cross-section taken entirely through an unlocked state according to an embodiment;

fig. 11 is a schematic structural view of a blocking member in a storage state according to an embodiment.

In the figure: 1. a blocking member; 2. a base member; 3. a first blocking cover; 4. a second shaft body; 5. a convex strip; 6. a second mounting hole; 7. convex ribs; 8. the accommodating groove II; 9. a first shaft body; 10. a first slot; 11. an insertion port; 12. an outer ring gear; 13. a second blocking cover; 14. a first mounting hole; 15. an inner gear ring; 16. a boss; 17. a second protrusion; 18. a receiving area; 19. a connecting plate; 20. a base; 21. a first protrusion; 22. the first accommodating groove is formed; 23. a connecting shaft; 24. a left half shell; 25. a right half shell; 26. and a plug hole.

Detailed Description

Preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative, exemplary, and should not be construed as limiting the scope of the utility model.

It should be noted that: like reference numerals denote like items in the following figures, and thus once an item is defined in one figure, it may not be further defined and explained in the following figures.

Example 1

1-11, the child safety protection lock comprises a blocking piece 1 and a base piece 2, wherein a first mounting hole 14 is formed in the base piece 2, a second mounting hole 7 is formed in the blocking piece 1, the first mounting hole 14 and the hole site of the second mounting hole 7 are oppositely arranged to form a shaft hole, a connecting shaft 23 is arranged in the shaft hole, and the blocking piece 1 and the base piece 2 are connected in a rotating mode through the connecting shaft 23.

As shown in fig. 3 to 5, preferably, the base member 2 includes a connecting plate 19 and a base 20 disposed on the front side of the connecting plate 19, two base 20 are disposed on the front side of the connecting plate 19, the two base 20 are disposed in a left-right spaced arrangement, the two base 20 are provided with first mounting holes 14, the hole sites of the two first mounting holes 14 are opposite, the center lines of the two first mounting holes 14 are coincident, a space for one end of the blocking member 1 to enter is formed between the two base 20, a second mounting hole 7 is disposed on the end of the blocking member 1 inserted into the space, the second mounting hole 7 is disposed opposite to the hole sites of the first mounting holes 14 on both sides, the center line of the second mounting hole 7 is coincident with the center line of the first mounting hole 14, the second mounting hole 7 is combined with the first mounting holes 14 on both sides to form the shaft hole, and the connecting shaft 23 is inserted into the shaft hole so that the blocking member 1 is rotationally connected to the base member 2.

The rear side of the connecting plate 19 is provided with a glue layer for fixing the connecting plate 19 on the door panel, and the glue layer can be double faced adhesive tape arranged at the rear side of the connecting plate 19.

As shown in fig. 3, the connecting shaft 23 is slidably disposed in the shaft hole, a rib 7/a first slot 10 is disposed on a side wall of the connecting shaft 23, and a first slot 10/a rib 7 matching with the rib 7/the first slot 10 is disposed on an inner wall of the second mounting hole 7.

Preferably, the inner wall of the second mounting hole 7 is provided with a protruding rib 7, the protruding rib 7 extends along the extending direction of the orifice of the second mounting hole 7, the connecting shaft 23 is provided with a first slot 10 extending along the length direction, and when the protruding rib 7 is inserted into the first slot 10, the relative rotation of the connecting shaft 23 and the blocking piece 1 is limited. Most preferably, the number of the convex ribs 7 is two, the two convex ribs 7 are symmetrically arranged on the inner wall of the second mounting hole 7, and two slots I10 which are respectively matched with the two convex ribs 7 are arranged on the side wall of the connecting shaft 23.

The side wall of the connecting shaft 23 is also provided with a locking part/a second slot, and the inner wall of the first mounting hole 14 is provided with a second slot/a locking part matched with the locking part/the second slot. The at least one first mounting hole 14 is provided with a second slot/locking portion.

Preferably, the locking portion is a latch provided on a side wall of the connecting shaft 23, and the second slot is a tooth slot provided on an inner wall of the first mounting hole 14.

As shown in fig. 1, 2 and 7, by fixedly connecting the connecting plate 19 to the door panel below the door handle, the blocking member 1 is rotated upwards relative to the base member 2 so that the blocking member 1 is rotated to a use state below the door handle, at this time, when the connecting shaft 23 is pushed to one side in the axial direction so that the locking part is inserted into the slot two, the connecting shaft 23 and the base member 2 are locked, at this time, the ribs 7 are inserted into the slot one 10 to limit the relative rotation of the connecting shaft 23 and the blocking member 1, thereby realizing the relative rotation of the blocking member 1 and the base member 2, so that the blocking member 1 is kept in a use state, at this time, the blocking member is prevented from rotating downwards at the lower side of the door handle by children to open the door.

When a person is outside the door and the door is accidentally closed, as the child alone cannot unlock the safety protection lock to open the door, in order to prevent the child alone from being accidental indoors, the person in emergency can forcefully break the door handle to press the door handle positioned on the inner side of the door down against the blocking piece 1, because the thickness of the protruding rib 7 is not thick, when the pressing force of the door handle is larger than the force born by the protruding rib 7, the protruding rib 7 can be broken to enable the blocking piece 1 and the base piece 2 to rotate relatively, so that the door handle can be completely rotated to open the door, the problem that the child alone cannot open the door to cause accidental conditions can be prevented on the basis that the child rotates the door handle to open the door, and the child can be prevented from being purchased again even if damaged.

The upper surface of the blocking member 1 is a blocking surface for contacting the door handle when the door handle is rotated, and when the blocking member 1 is rotated to the use state, the blocking member 1 is laterally disposed under the door handle to block the door handle from being rotated downward. The blocking member 1 can be unlocked and rotated downward to a vertically-arranged state when not in use.

As shown in fig. 9 and 10, both ends of the connecting shaft 23 are provided with stopper caps, and the stopper caps at both ends limit the maximum stroke of the axial movement of the connecting shaft 23.

Specifically, the outer sides of the two seat bodies 20 are provided with first accommodating grooves 22 communicated with the first mounting holes 14, the blocking covers at two ends of the connecting shaft 23 are respectively arranged in the first accommodating grooves 22, the blocking covers are larger than the aperture of the first mounting holes 14 in size, when the connecting shaft 23 moves left and right in the shaft hole, the blocking covers are abutted with the bottoms of the accommodating grooves 22 at the same side to limit the moving stroke of the connecting shaft 23, and the connecting shaft 23 can be limited to be separated from the shaft hole.

When the first blocking cover 3 on one side pushes the connecting shaft 23 to move to a position abutting against the bottom of the accommodating groove one 22 in the first direction, the locking part is inserted into the second slot, and at this time, the blocking piece 1 and the base piece 2 cannot rotate relatively, so that the blocking piece 1 is locked.

When the second blocking cover 13 on the other side pushes the connecting shaft 23 to move to a position abutting against the bottom of the first accommodating groove 22 in a second opposite direction, the locking part is separated from the second accommodating groove, and at the moment, the connecting shaft 23 can rotate relative to the base member 2, so that the blocking member 1 can unlock and rotate, and the blocking member 1 can rotate relative to the base member 2.

Whether the connecting shaft 23 is in the unlocking position or the locking position is determined by pressing the blocking covers on both sides to the extreme positions, so that the user can conveniently lock and unlock.

Preferably, the ribs 7 are inserted into the first slot 10 in a sliding manner all the time during the process of locking and unlocking by sliding the connecting shaft 23 left and right, so that the relative rotation limitation of the connecting shaft 23 and the blocking member 1 is maintained all the time.

In order to facilitate normal insertion of the rib 7 into the first slot 10 and loading of the connecting shaft 23 into the shaft hole, the connecting shaft 23 comprises a first shaft body 9 and a second shaft body 4, the first shaft body 9 and the second shaft body 4 are detachably and coaxially connected, the first slot 10 is arranged on the first shaft body 9, one end of the first shaft body 9 connected with the second shaft body 4 is provided with an insertion opening 11 for the rib 7 to enter the first slot 10, one end of the blocking piece 1 with the second mounting hole 7 is inserted into a space between the two base bodies 20 during mounting, the first shaft body 9 is inserted into the shaft hole, the rib 7 in the second mounting hole 7 is slidably inserted into the first slot 10 from the insertion opening 11, and then the second shaft body 4 is inserted from the other side of the shaft hole, so that the first shaft body 9 and the second shaft body 4 are connected together, and mounting is completed.

Preferably, the first shaft body 9 and the second shaft body 4 are fixed by screws.

In addition, an insertion hole 26 is formed on an end face of one end, connected with the second shaft body 4, of the first shaft body 9, the second shaft body 4 is fixedly connected with the first shaft body 9 through a screw after being inserted into the insertion hole 26, a raised strip 5 corresponding to the first slot 10 is formed on the outer wall of the second shaft body 4, when the second shaft body 4 is inserted into the insertion hole 26, the raised strip 5 is inserted into the corresponding first slot 10, the raised strip 5 enables the first shaft body 9 to be connected with the second shaft body 4 more stably, meanwhile, the raised rib 7 is limited to slide in the first slot 10, and the raised rib 7 is limited to be separated from the first slot 10. The first slot 10 has a length for the rib 7 to slide left and right.

In addition, a plurality of latches are circumferentially arranged on the side wall of the connecting shaft 23, so as to form an outer gear ring 12 on the side wall of the connecting shaft 23, an inner gear ring 15 matched with the outer gear ring 12 is arranged on the inner wall of the first mounting hole 14, a tooth slot for inserting the latches is formed between two adjacent teeth of the inner gear ring 15, and when the connecting shaft 23 is pushed to one side, the outer gear ring 12 can be inserted into the inner gear ring 15 to be meshed with the inner gear ring 15, so that the relative rotation of the connecting shaft 23 and the base member 2 is limited, and locking is formed. The cooperation of the inner gear ring 15 and the outer gear ring 12 can lock different angles of rotation of the blocking member 1 relative to the base member 2.

Preferably, the outer ring gear 12 is disposed at one end of the connecting shaft 23, the inner wall of the first mounting hole 14 at the end is provided with an inner ring gear 15 matched with the outer ring gear 12, and one side of the blocking member 1 facing the inner ring gear 15 is provided with a second accommodating groove 8 communicated with the second mounting hole 7.

When the connecting shaft 23 is pushed to move to one side, the outer gear ring 12 at the end part of the connecting shaft 23 is inserted into the inner gear ring 15 in the first mounting hole 14 to be meshed with the inner gear ring 15, and at the moment, the relative rotation between the connecting shaft 23 and the base member 2 is limited, and meanwhile, the relative rotation between the connecting shaft 23 and the blocking member 1 is limited, so that the blocking member 1 and the base member 2 are locked against relative rotation.

When the connecting shaft 23 is pushed to move to the opposite side, the outer gear ring 12 moves to one side of the second mounting hole 7, the outer gear ring 12 is disengaged from the inner gear ring 15 and moves into the accommodating groove two 8, and at this time, the blocking member 1 can be rotationally adjusted relative to the base member 2 because the connecting shaft 23 can rotate relative to the base member 2, so that the blocking member 1 is unlocked and rotated.

Fig. 1 and 2 show the working principle: when a door is opened by a child needing to rotate a door handle downwards, the left second blocking cover 13 is pushed to the right side by the safety protection lock, so that the second blocking cover 13, the connecting shaft 23 and the first blocking cover 3 are simultaneously moved to the right, until the second blocking cover 13 is abutted with the bottom of the left accommodating groove I22, at the moment, the connecting shaft 23 is in an unlocking position, the outer tooth ring 12 at the left end of the connecting shaft 23 moves rightwards into the accommodating groove II 8 from a position meshed with the inner tooth ring 15, the outer tooth ring 12 is disengaged with the inner tooth ring 15, the connecting shaft 23 and the base piece 2 can relatively rotate, the blocking piece 1 and the connecting shaft 23 can relatively rotate through the blocking piece 1 being regulated to a use state of being transversely arranged, and then the first blocking cover 3 at the right side is pushed leftwards until the first blocking cover 3 and the connecting shaft 23 are simultaneously moved leftwards until the connecting shaft 23 at the bottom of the right accommodating groove I22 is in a position of the door handle, and the connecting shaft 23 can not relatively rotate to the inner tooth ring 23, and the left end of the connecting shaft 23 can relatively rotate to the base piece 2, and the left end of the connecting shaft 23 can not relatively rotate to the base piece 1 is prevented from being meshed with the inner tooth ring 2, and the left end of the connecting shaft 23 can relatively rotates to the base piece 1 can relatively rotate to the base piece 2, and the left end can relatively rotate to the base piece 1 can relatively rotate to the left and the left is prevented from rotating.

When the door is opened by preventing a child from turning down the door handle without the safety lock, the second blocking cover 13 on the left side is pushed to the right side, so that the second blocking cover 13, the connecting shaft 23 and the first blocking cover 3 are simultaneously moved to the right side until the second blocking cover 13 abuts against the groove bottom of the first accommodating groove 22 on the left side, at this time, the connecting shaft 23 is in the unlocking position, the outer ring gear 12 on the left end of the connecting shaft 23 is moved to the right side from the position meshed with the inner ring gear 15 into the second accommodating groove 8, the outer ring gear 12 is disengaged from the inner ring gear 15, the connecting shaft 23 and the base member 2 can relatively rotate, the blocking member 1 and the connecting shaft 23 are adjusted to be rotated relative to the base member 2 by pulling the blocking member 1, the blocking member 1 is adjusted to be in a vertically downward arranged state from the transverse arrangement, at this time, the blocking member 1 does not block the door handle, and the door handle can be forced to be turned down to open the door.

As shown in fig. 6-8, in addition, at least one side of the blocking member 1 is provided with a protrusion 16 protruding outwards and opposite to the base 20 on the side, the base 20 is a circular base, a plurality of first protrusions 21 are arranged on the outer arc surface of the base 20 opposite to the protrusion 16, a plurality of first protrusions 21 are arranged around the base 20, two second protrusions 17 are arranged on the surface of the protrusion 16 opposite to the base 20, a containing area 18 for containing the first protrusions 21 is formed between the two second protrusions 17, the first protrusions 21 enter the containing area 18 and respectively collide with the two second protrusions 17, the cooperation of the first protrusions 21 and the second protrusions 17 plays a role of simple positioning, so that the blocking member 1 is kept at a required rotation angle, and then the left and right sliding connecting shaft 23 is locked.

When the blocking member 1 rotates relative to the base member 2, the first protrusions 21 and the second protrusions 17 are elastically deformed by being pressed against each other, so that the first protrusions 21 are moved in or out between the two second protrusions 17.

Preferably, the blocking element 1 has a first projection 21 which engages in the receiving area 18 when it is rotated into both the transverse use position and the vertical storage position.

Preferably, both sides of the blocking member 1 are provided with protrusions 16 respectively opposite to the seats 20 of both sides.

In addition, the blocking member 1 comprises left and right half-shells, and the left half-shell 24 is preferably fixedly connected to the right half-shell 25 by screws.

Example two

The first difference between this embodiment and the second embodiment is the positions where the bead 7, the locking portion, the first slot 10 and the second slot are provided. The specific contents are as follows:

the child safety protection lock comprises a blocking piece 1 and a base piece 2, wherein a first mounting hole 14 is formed in the base piece 2, a second mounting hole 7 is formed in the blocking piece 1, the first mounting hole 14 and the hole position of the second mounting hole 7 are oppositely arranged to form a shaft hole, a connecting shaft 23 is arranged in the shaft hole, and the blocking piece 1 and the base piece 2 are connected in a rotating mode through the connecting shaft 23.

The connecting shaft 23 is arranged in the shaft hole in an axially sliding way, a first convex rib 7/a first slot 10 is arranged on the side wall of the connecting shaft 23, a first slot 10/a first convex rib 7 matched with the first convex rib 7/the first slot 10 is arranged on the inner wall of the first mounting hole 14, a second locking part/a second slot is also arranged on the side wall of the connecting shaft 23, and a second slot/a second locking part matched with the second locking part/the second slot is arranged on the inner wall of the second mounting hole 7.

Preferably, the side wall of the connecting shaft 23 is provided with a first slot 10, and the inner wall of the first mounting hole 14 is provided with a convex rib 7 matched with the first slot 10.

Preferably, a locking part is arranged on the side wall of the connecting shaft 23, and a second slot matched with the locking part is arranged on the inner wall of the second mounting hole 7.

When the door handle is used, the base piece 2 is fixed on the door plate below the door handle, the blocking piece 1 is rotated upwards to a transverse use state relative to the base piece 2, the locking part is inserted into the slot II when the connecting shaft 23 is pushed to move to one side, the relative rotation of the connecting shaft 23 and the blocking piece 1 is locked, the convex rib 7 is inserted into the slot I10 to limit the relative rotation of the connecting shaft 23 and the base piece 2, so that the blocking piece 1 and the base piece 2 are locked in relative rotation, the blocking piece 1 is kept in the use state, and children are prevented from rotating the door handle downwards to open a door.

The foregoing has outlined the child safety lock of the present utility model in order that the detailed description of the principles and embodiments of the utility model may be carried out in order that the detailed description of the utility model may be carried out. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. The child safety protection lock comprises a blocking piece and a base piece connected with a door plate, wherein a first mounting hole is arranged on the base piece, a second mounting hole is arranged on the blocking piece, the first mounting hole and the hole site of the second mounting hole are oppositely arranged to form a shaft hole, a connecting shaft is arranged in the shaft hole, the blocking piece and the base piece are rotationally connected through the connecting shaft, the child safety protection lock is characterized in that the connecting shaft can be axially and slidably arranged in the shaft hole, a first convex rib/a first slot is arranged on the side wall of the connecting shaft, a first slot/a convex rib matched with the first convex rib/the first slot is arranged on the inner wall of the second mounting hole, a second locking part/a second slot matched with the second locking part/the second slot is arranged on the side wall of the connecting shaft,

the connecting shaft is pushed to move to one side along the axial direction, so that the locking part is inserted into the second slot, the relative rotation of the connecting shaft and the base piece is locked, and at the moment, the convex rib is inserted into the first slot to limit the relative rotation of the connecting shaft and the blocking piece.

2. The child safety lock according to claim 1, wherein the base member includes a connecting plate and a base body disposed on one side of the connecting plate, the base body is provided with two base bodies, the two base bodies are disposed at left and right intervals, first mounting holes with opposite hole positions are disposed on the two base bodies, a slot two/locking portion is disposed on an inner wall of at least one of the first mounting holes, a space for one end of the blocking member to enter is formed between the two base bodies, and a second mounting hole is disposed on an end portion of the blocking member inserted into the space.

3. The child safety lock according to claim 2, wherein the locking portion is a latch provided on a side wall of the connecting shaft, and the second slot is a tooth slot provided on an inner wall of the first mounting hole.

4. The child safety lock according to claim 3, wherein a plurality of latches are circumferentially provided on a side wall of the connection shaft to form an outer gear ring on the side wall of the connection shaft, an inner gear ring matched with the outer gear ring is provided on an inner wall of the first mounting hole, and a tooth slot for inserting the latches is formed between two adjacent latches of the inner gear ring.

5. The child safety lock according to claim 2, wherein the inner wall of the second mounting hole is provided with a protruding rib, the protruding rib extends along the extending direction of the orifice of the second mounting hole, the connecting shaft is provided with a first slot extending along the length direction, and the protruding rib is always inserted in the first slot in a sliding manner during the sliding process of the connecting shaft.

6. The child safety lock according to claim 2, wherein the two ends of the connecting shaft are provided with blocking covers to limit the maximum travel of the axial movement of the connecting shaft, the outer sides of the two seat bodies are provided with first accommodating grooves communicated with the first mounting holes, the blocking covers at the two ends of the connecting shaft are respectively arranged in the first accommodating grooves, the blocking covers are larger than the aperture of the first mounting holes,

when the first baffle cover on one side moves to a position abutting against the bottom of the first accommodating groove in the first direction, the locking part is inserted into the second slot;

when the second blocking cover on the other side moves to a position abutting against the bottom of the first accommodating groove in a second direction opposite to the first direction, the locking part is separated from the second inserting groove.

7. The child safety lock according to claim 4, wherein the outer gear ring is disposed at one end of the connecting shaft, an inner gear ring matched with the outer gear ring is disposed on an inner wall of the first mounting hole at the end, a second receiving groove communicated with the second mounting hole is disposed on a side of the blocking member facing the outer gear ring,

when the connecting shaft moves towards one side, the outer gear ring at the end part of the connecting shaft is meshed with the inner gear ring in the first mounting hole, and when the connecting shaft moves towards the other side opposite to the connecting shaft, the outer gear ring is disengaged from the inner gear ring and moves into the second accommodating groove.

8. The child safety lock according to claim 5, wherein the connecting shaft comprises a first shaft body and a second shaft body, the first shaft body and the second shaft body are detachably and coaxially connected together, the first slot is arranged on the first shaft body, and an insertion opening for the protruding rib to enter the first slot is arranged at one end of the first shaft body connected with the second shaft body.

9. The child safety lock according to claim 2, wherein at least one side of the blocking member is provided with a protrusion protruding outwards opposite to the base on the side, the base is a circular base, a plurality of first protrusions are arranged on an outer arc surface of the base opposite to the protrusion, the plurality of first protrusions are arranged around the base, two second protrusions are arranged on a surface, opposite to the base, of the protrusion, a containing area for containing the first protrusions is formed between the two second protrusions, and the first protrusions can enter the containing area and respectively collide with the two second protrusions.

10. The child safety protection lock comprises a blocking piece and a base piece connected with a door plate, wherein the base piece is provided with a first mounting hole, the blocking piece is provided with a second mounting hole, the first mounting hole and the hole site of the second mounting hole are oppositely arranged to form a shaft hole, a connecting shaft is arranged in the shaft hole, the blocking piece and the base piece are rotationally connected through the connecting shaft, the child safety protection lock is characterized in that the connecting shaft can be axially and slidably arranged in the shaft hole, a first convex rib/a first slot is arranged on the side wall of the connecting shaft, a first slot/a first convex rib matched with the first convex rib/the first slot is arranged on the inner wall of the first mounting hole, a second locking part/a second slot is also arranged on the side wall of the connecting shaft, a second slot/a second locking part matched with the second locking part/the second slot is arranged on the inner wall of the second mounting hole,

the connecting shaft is pushed to move to one side along the axial direction, so that the locking part is inserted into the second slot, the relative rotation of the connecting shaft and the blocking piece is locked, and at the moment, the convex rib is inserted into the first slot to limit the relative rotation of the connecting shaft and the base piece.