CN218467342U - Protective device for ball-shaped handle lock - Google Patents

Abstract

The utility model belongs to articles for daily use field, concretely relates to protector of spherical handle lock, this protector include first lock body and second lock body, are formed with the lock chamber in the first lock body, and outside first lock body was located to second lock body cover at least partially, the second lock body was followed anticlockwise or clockwise for first lock body and is rotated in order to lock, and two lock body cooperations form to the operation portion. The utility model discloses a second lock body cover is located outside the first lock body so that this protector assembles firmly, the assembly with dismantle the convenience, and two lock body cooperations are in order to be formed with the operation portion that is used for the operation under the lock-out condition.

Description

Protective device for ball-shaped handle lock

Technical Field

The utility model belongs to articles for daily use field, concretely relates to a protector for be used for carrying out the protection to spherical handle lock.

Background

A child-proof lock is used for acting on household products such as doors, windows and the like to protect corresponding movable parts such as doors, drawers and the like, and avoid self-injury or disorder of articles caused by unauthorized operation of children.

A knob lock, also called a knob lock, is a kind of home door lock, and its inner and outer handles (or called lock handles) are spherical, and the door lock is opened by holding the spherical handle and rotating. Due to the above-mentioned structural reasons of the knob lock, the conventional door lock protection mechanism is not suitable for protecting the knob lock, and the conventional method can only lock by using the locking structure of the knob lock to avoid the operation of children.

But this will certainly cause inconvenience in use for adults. There are also a few child-resistant locks available in the prior art that can be used in knob locks. For example, CN21243964U discloses a spherical lock protection cover, which is composed of two protection covers that are fastened to each other. For another example, CN203499363U discloses a ball lock protection sleeve, which is composed of two shells and formed as a clamping portion on the U-shaped hole of the side walls of the two shells. However, these protective locks are complicated and relatively inconvenient to install and use.

Therefore, there is a need to develop a new type of ball handle lock guard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a protection device of spherical handle lock safe convenient, convenient to use.

In order to achieve the above purpose, the utility model adopts the following scheme:

as a first aspect of the present invention, a protection device for a spherical handle lock is provided, including a first lock body, a lock cavity for accommodating at least a part of a spherical handle therein is formed in the first lock body.

The first locking body comprises at least two locking body bodies, the locking body is hollow to form a locking cavity, and a first operation hole is formed in the side wall of the locking body; the upper and lower end department of latch fitting main part is equipped with first connecting piece or second connecting piece, and the corresponding end department of adjacent latch fitting main part is connected with the second connecting piece through first connecting piece.

The protection device further comprises a second lock body detachably connected with the first lock body, the second lock body is at least partially sleeved outside the first lock body, and a second operation hole is formed in the second lock body; and a second locking part and a first locking part are respectively arranged on the outer side wall of the first lock body and the inner side wall of the second lock body.

The second lock body rotates anticlockwise or clockwise relative to the first lock body, the second locking piece is matched with the first locking piece to enable the second lock body to be locked with the first lock body, and the second operating hole at least partially corresponds to the first operating hole to form an operating portion.

As a second aspect of the present invention, a protection device for a spherical handle lock is provided, which includes a first lock body, wherein a lock cavity is formed in the first lock body for accommodating at least a part of a spherical handle therein.

The first locking body comprises at least two locking body bodies, the locking body is hollow to form a locking cavity, and a first operating part is formed on the side wall of the locking body; the upper end and the lower end of the locking piece main body are provided with a first connecting piece or a second connecting piece, and the corresponding end of the adjacent locking piece main body is connected with the second connecting piece through the first connecting piece.

The protection device further comprises a second lock body detachably connected with the first lock body, the second lock body is at least partially sleeved outside the first lock body, and a second operation part is arranged on the second lock body; and a second locking part and a first locking part are respectively arranged on the outer side wall of the first lock body and the inner side wall of the second lock body.

The second lock body rotates anticlockwise or clockwise relative to the first lock body, the second locking piece is matched with the first locking piece to enable the second lock body to be locked with the first lock body), and the second operation portion or the first operation portion is a soft rubber piece or an operation elastic piece.

According to the protective device of the spherical handle lock, the second operation part is a soft rubber piece or an operation elastic sheet, and the first operation part is a first operation hole.

According to the protective device of the spherical handle lock, the first connecting piece and the second connecting piece are respectively provided with the concave hole part and the convex block part, and the concave hole part is matched with the convex block part so as to connect the adjacent locking piece main bodies.

According to the above-mentioned protector of the spherical handle lock, the upper and lower tip department of latch fitting main part still is equipped with first counterpoint piece and second counterpoint piece, and both are for lug or recess of mutually supporting in order to fix a position when adjacent latch fitting main part splices each other.

According to the protective device of the spherical handle lock, the number of the first connecting pieces and the number of the second connecting pieces are two, and the first aligning piece or the second aligning piece is arranged between the two first connecting pieces.

According to the protection device of the spherical handle lock, the second locking piece is the elastic piece arranged along the circumferential direction of the locking piece main body, and the first locking piece is the through hole, the groove or the bump which is correspondingly arranged, so that the elastic piece and the through hole, the groove or the bump are mutually acted to limit the rotation of the second lock body and the first lock body.

According to the protective device of the ball handle lock, the outer side wall of the locking piece main body is also provided with a locking part, and the locking part comprises a first locking part, a second locking part and a neck part positioned between the first locking part and the second locking part; the second locking part is in a bell mouth shape, so that the outer width of the second locking part is larger than the inner width of the second locking part; the second locking piece is disposed at the first locking portion.

According to the above-mentioned guard device of the knob lock, the locking portion is concavely formed on an outer sidewall of the locking piece body.

According to the protection device of the spherical handle lock, the tail end of the elastic sheet is connected with the locking piece main body, the front end and the two sides of the elastic sheet are separated from the locking piece main body by the U-shaped groove, and the elastic sheet is also convexly provided with the elastic sheet convex block.

According to the above-mentioned guard device of the knob lock, the second lock body includes a second lock body, the inside of which is hollow to form a second lock chamber for at least partially housing the first lock body therein; a second operation hole is formed on the side wall of the second lock piece main body, at least part of the second operation hole corresponds to the first operation hole, and an operation part for operating the spherical handle is formed in the crossing area of the second operation hole and the first operation hole; the first locking member is formed on an inner wall of the second locking member main body.

According to the above-described guard device of the knob lock, the first lock body includes two, three or four lock body bodies.

According to the protective device of the spherical handle lock, the second lock body approaches to the first lock body so as to be sleeved on the first lock body, and rotates anticlockwise or smoothly to lock.

According to the protection device of the spherical handle lock, the outer end surface and the inner end surface of the protection device are respectively provided with the first end hole and the second end hole, and the first end hole and the second end hole are communicated with the lock cavity.

As a third aspect of the present invention, a protection device for a spherical handle lock is provided, which includes a first lock body, and a lock cavity formed in the first lock body and used for accommodating at least a part of the spherical handle therein. The first locking body comprises at least two locking body bodies, and a first operation part is formed on the side wall of the locking body cavity formed by the hollow locking body bodies.

The protection device further comprises a second lock body detachably connected with the first lock body, wherein the second lock body is hollow to form a second lock cavity for at least partially sleeving the first lock body therein; the side wall of the second lock body is provided with a second operating part.

And a second locking part and a first locking part are respectively arranged on the outer side wall of the first lock body and the inner side wall of the second lock body. The second lock body rotates anticlockwise or clockwise relative to the first lock body, and the second locking piece is in concave-convex fit with the first locking piece so that the second lock body is locked with the first lock body. The second operation hole portion is provided corresponding to the first operation portion to form an operation portion for operating the rotary unlocking of the ball handle.

According to the above-mentioned guard device for a knob lock, the first operating portion is a first operating hole, and the second operating portion is a second operating hole, which are at least partially overlapped to form a through hole type operating portion.

According to the protective device of the spherical handle lock, the second operation part is a soft rubber piece, and the first operation part is a first operation hole or a soft rubber piece.

According to the protection device of the spherical handle lock, the second operation part is the operation elastic sheet, and the first operation part is the first operation hole, the operation elastic sheet or the soft rubber piece; or, the second operation part is a second operation hole or a soft rubber piece, and the first operation part is an operation elastic sheet.

According to the protection device of the spherical handle lock, the second locking piece is the elastic piece arranged along the circumferential direction of the locking piece main body, and the first locking piece is the through hole, the groove or the bump which is correspondingly arranged, so that the elastic piece and the through hole, the groove or the bump are mutually acted to limit the rotation of the second lock body and the first lock body.

According to the protection device of the spherical handle lock, the tail end of the elastic sheet is connected with the lock piece body, the front end and the two sides of the elastic sheet are separated from the lock piece body by the U-shaped grooves, and the elastic sheet is also convexly provided with the elastic sheet convex block.

According to the protective device of the ball handle lock, the outer side wall of the locking piece main body is also provided with a locking part, and the locking part comprises a first locking part, a second locking part and a neck part positioned between the first locking part and the second locking part; the second locking portion is flared or the like so that an outer width thereof is larger than an inner width thereof; the second locking piece is disposed at the first locking portion.

According to the above-described guard device of the knob lock, the first lock body includes two, three or four lock body bodies.

According to the protective device of the spherical handle lock, the second lock body approaches to the first lock body so as to be sleeved on the first lock body, and rotates anticlockwise or smoothly to be locked; when unlocking, the reverse action is carried out, namely, the rotation is reversed firstly and then the separation is carried out.

The utility model discloses a protector of spherical handle lock has following beneficial effect:

1. the protection device is integrally composed of an inner part and an outer part which are mutually sleeved, the assembling process can be completed through the two steps of approaching and rotating, and the installation is convenient.

2. This protector closes at the installation, has the clearance between its inner wall and the spherical handle to make the rotation to protector can not the spherical handle unblock of direct drive.

3. When unlocking is needed, the adult hand acts on the surface of the spherical handle through the operating part to drive the spherical handle to rotate so as to unlock.

4. The front end face of the guard may also be provided with a second end hole for a key to be set or used.

5. In a preferred embodiment, the first lock body is formed by assembling at least two pieces of lock bodies, and the first lock body is sleeved by the second lock body to form a firm protective device which is easy to mount and dismount.

6. The utility model discloses an in each embodiment, this protector adopts the exposed spherical handle of through-hole, flexible glue piece deformation to act on spherical handle, or operates mode such as shell fragment deformation and act on spherical handle to realize the purpose of rotatory spherical handle with the unblock lock.

7. The through hole type operation part reduces the possibility of operation by children because the contact area of the spherical handle is obviously reduced. The operation portion of soft rubber spare and operation shell fragment form has also enlarged the volume when not adding protector for also having increased children's operation degree of difficulty to promote the guard effect.

Drawings

Fig. 1 is a schematic perspective view of a protective device of a ball-shaped handle lock according to a first embodiment of the present invention;

FIG. 2 is a schematic structural view of a first lock body of the shielding device of FIG. 1;

FIG. 3 is a first view of the construction of one of the locks of FIG. 2;

FIG. 4 is a second schematic structural view of the locking element of FIG. 3, from another perspective;

FIG. 5 is a structural schematic illustration three of the lock of FIG. 3, which is a structural schematic illustration from a third perspective;

figure 6 is a front side structural schematic view of the first lock body of figure 2;

FIG. 7 is a schematic structural view of a second lock body of the shielding device of FIG. 1;

FIG. 8 is an exploded view of the guard of FIG. 1;

fig. 9 is an exploded view of a ball handle lock according to a second embodiment of the present invention;

figure 10 is a schematic structural view of a second lock body in the embodiment of figure 9;

fig. 11 is an exploded view of a ball-shaped handle lock according to a third embodiment of the present invention;

figure 12 is a schematic structural view of the second lock body in the embodiment of figure 11.

The first lock body 10, the second lock body 20, the first lock piece 11, the second lock piece 12, the operation portion 101, the first end hole 102, the second end hole 103, the lock cavity 104, the lock piece main body 111, the lock piece cavity 112, the second end hole portion 113, the first end hole portion 114, the first operation hole 115, the first connecting piece 121, the concave hole portion 122, the second connecting piece 123, the bump portion 124, the first alignment piece 125, the second alignment piece 126, the first locking piece 131, the second locking piece 132, the locking portion 130, the neck portion 133, the first locking portion 134, the second locking portion 135, the second lock piece main body 201, the second operation hole 202, the second lock piece cavity 203, the second lock piece inner end 204, the second lock piece outer end 205, the soft rubber piece 105, the operation elastic piece 106, and the elastic piece groove 107.

Detailed Description

In order to better understand the invention for those skilled in the art and to define the claimed scope more clearly, the invention will be described in detail below with respect to certain specific embodiments of the invention. It should be noted that the following description is only a few examples of the present invention, and the specific and direct descriptions of the related structures are only for the convenience of understanding the present invention, and the specific features do not naturally and directly limit the scope of the present invention. Conventional alternatives and substitutions made by those skilled in the art in light of the teachings of the present disclosure should be considered within the scope of the present disclosure.

A guard for a ball handle lock includes a first lock body (10) and a second lock body (20) removably connected to the first lock body (10). The first lock body 10 is hollow inside to form a lock chamber 104 for accommodating the knob therein at least partially, the first lock body 10 includes at least two lock main bodies 111, the lock main bodies 111 are hollow inside to form a lock chamber 112, and a first operating portion is formed on a sidewall thereof.

The second lock body 20 includes a second lock body 201, the second lock body 201 being hollow inside to form a second lock cavity 203 for at least partially sheathing the first lock body 10 therein; a second operation portion is correspondingly formed on a sidewall of the second locking body 201.

A second locking member 132 and a first locking member 131 are respectively arranged on the outer side wall of the first locking body 10 and the inner side wall of the second locking body 20; the second lock body 20 rotates counterclockwise or clockwise with respect to the first lock body 10, and the second lock body 20 is locked with the first lock body 10 by the concave-convex engagement between the second locking member 132 and the first locking member 131.

The second operation hole portion is provided corresponding to the first operation portion to form an operation portion 101 for operating the ball handle to rotate and unlock, so that an adult user can directly apply force to the operation portion 101 to drive the ball handle to rotate and unlock the door lock after the protection device is assembled.

Example one

A protection device of a spherical handle lock is used for being matched with the spherical handle lock (or called as the spherical lock) to lock a spherical handle of the spherical handle lock, so that children are prevented from operating without permission, and the safety of keeping a home and looking after the children is improved. At the same time, the protection device also allows an adult to operate the spherical handle after assembly to achieve the use function of the door lock.

As shown in fig. 1, the protective device of the ball handle lock comprises a first lock body 10 and a second lock body 20 which are detachably matched, and the first lock body and the second lock body can be mutually matched to form an integral and complete protective lock, and can also be detached to be detached from the ball handle.

As shown in fig. 2 and 6, the first lock body 10 is formed by assembling a left part and a right part, that is, two hemispherical first lock pieces 11 and second lock pieces 12 are spliced with each other to form a spherical first lock body capable of accommodating a spherical handle therein. In the present embodiment, the spherical first lock body formed by the two lock pieces 11 and 12 engaged with each other is shown in fig. 2, and on this basis, the second lock body 20 is fitted thereto from the outside and rotated clockwise or counterclockwise so that the second lock body 20 is fixed to the first lock body 10.

In this embodiment, the second lock body 20 rotates clockwise as shown in fig. 1 to be assembled and locked with the first lock body 10, and rotates counterclockwise to unlock the second lock body 20 from the first lock body 10 and then move the second lock body 20 outward to separate the two. Of course, the locking and unlocking directions may be reversed in other embodiments.

Although the first locking body 10 is formed by assembling two locking pieces 11 and 12, the number of the locking pieces is not limited to two, and may be three, four or more, and is not limited in other embodiments.

In the present embodiment, the side wall of the guard of the knob lock is formed with the operating parts 101 penetrating the first lock body 10 and the second lock body 20, which are disposed at any position on the side wall of the guard, preferably in an amount of 2-5 and uniformly or non-uniformly distributed.

The outer end face and the inner end face of the protection device are respectively provided with a first end hole 102 and a second end hole 103, and a lock cavity 104 for accommodating the spherical handle is formed inside the protection device. The first end hole 102 and the second end hole 103 are both communicated with the lock cavity 104. The operation part 101 is used for a user to apply force to the side wall of the spherical handle through the operation part so as to rotate the spherical handle to unlock the spherical handle; the first end hole 102 is used for arranging a connecting part of the spherical handle, so that the spherical handle can be arranged in the lock cavity 104; the second end hole 103 is used to expose a key hole on the front face of the knob to facilitate use of the key without removing the guard. Of course, regardless of the use of the key, the second end hole 103 may be provided without or with an openable lid-like structure.

In this embodiment, the guard is configured to not tightly fit onto the spherical handle, i.e., after assembly thereof, the guard can be rotated relative to the spherical handle without causing corresponding rotation thereof to unlock the door lock. Preferably, the lock cavity 104 has an inner diameter greater than the outer diameter of the knob to prevent a child from turning the protector and unlocking the door lock.

The side wall, the front end face and the rear end face are three opposite positions, and do not need to be strictly a plane or a curved surface with three distinct boundaries. Namely: the specific shape of the protective device can be changed properly on the basis of fig. 1-8, and the functions of all parts are the same.

As shown in fig. 3 to 6, in the present embodiment, the first locking part 11 and the second locking part 12 are of a symmetrical structure.

The first and second locking parts 11 and 12 include a locking part body 111, the locking part body 111 is hollow to form a locking part cavity 112, a second end hole portion 113 is formed at an inner end of the locking part body 111, a first end hole portion 114 is formed at an outer side, and a first operation hole 115 is formed on a side wall. In this embodiment, the lock cavity 104 is formed by two lock cavities 112, the first end bore 102 is formed by two second end bore portions 113, and the second end bore 103 is formed by two first end bore portions 114.

As shown in fig. 3, 5 and 6, a first connecting piece 121 and a second connecting piece 123 are further formed at upper and lower ends of the latch body 111, respectively, and are engaged with each other in a concave-convex manner to lock the adjacent two latch bodies 111. In this embodiment, the first connecting member 121 is formed with a concave portion 122, and the second connecting member 123 is formed with a convex portion 124, so that the convex portion 124 is clamped into the concave portion 122 to match the first connecting member 121 and the second connecting member 123.

Of course, in other embodiments, the first connecting member 121 and the second connecting member 123 are not limited to be in a concave-convex fit, and may also be in other known connecting manners. For example, the two are respectively screw holes correspondingly arranged and fixed by a screw passing through; or two connecting parts which are fixed by a self-tapping screw passing through the two connecting parts; or both, a magnetic or interference fit, etc.

In this protector, since the second lock body 20 is further fitted to the outside of the first lock body 10, the degree of the coupling force between the two lock pieces 11 and 12 does not need to be particularly strong.

As shown in fig. 5, the upper and lower end portions of the locking body 111 are further provided with a first aligning member 125 and a second aligning member 126, which are protrusions or grooves engaged with each other and are located at the middle portion of the sidewall of the locking body 111 to be positioned when the two locking members 11 and 12 are coupled to each other.

In this embodiment, two first connecting members 121 and two second connecting members 123 are disposed on the side walls of the locking member body 111, respectively, so that the two locking members 11 and 12 are connected with each other relatively firmly. In other embodiments, the first connecting member 121 and the second connecting member 123 may be disposed in the middle of the locking member body 111 after increasing their widths; in this case, the first aligning member 125 and the second aligning member 126 may be omitted.

As shown in fig. 4, a locking part 130 is further formed on an outer sidewall of the locking piece body 111, and the locking part 130 is concavely formed on the outer sidewall of the locking piece body 111. The locking part 130 includes a first locking part 134, a second locking part 135, and a neck part 133 therebetween, such that the locking part 130 at the neck part 133 is narrower than the locking part 130 at the first and second locking parts 134 and 135, as shown in fig. 4.

In the present embodiment, the second locking part 135 has a bell mouth shape such that an outer width thereof is greater than an inner width thereof, thereby performing a guiding function, and the neck part 133 is located at an inner side thereof. The second locking member 132 is formed in the first locking portion 134, and is an elastic piece elastically disposed on the sidewall of the locking member main body 111, the end of the elastic piece is connected to the locking member main body 111, and the front end and both sides are separated from the locking member main body 111 by the U-shaped groove. In other words, the spring piece is formed by forming a U-shaped groove in the lock main body 111. The elastic piece is also provided with an elastic piece convex block in a protruding mode.

Wherein the second locking member 132 is disposed along a circumferential direction of the locking member main body 111 so that the second lock body 20 is rotatably engaged therewith. Obviously, the arrangement direction of the second locking member 132 determines the rotation fitting direction of the second lock body 20 relative to the first lock body 10. In this embodiment, the second lock body 20 extends counterclockwise (i.e. the direction from the connected end to the free front end), so that the second lock body 20 is locked when rotating clockwise and unlocked when rotating counterclockwise.

As shown in fig. 7, in the present embodiment, the second lock body 20 is in a hollow truncated cone shape to be fitted to the sidewall of the first lock body 10, so that the two lock pieces 11 and 12 of the first lock body 10 are sleeved therein to strengthen the connection between the two lock pieces 11 and 12 and form an integrated protection device. Of course, the shape of the second lock body 20 is also exemplary, and in other embodiments, the shape of the second lock body may be appropriately changed without limitation, if the first lock body 10 is at least partially sleeved therein.

The second lock body 20 includes a second lock body 201, and the second lock body 201 is hollow to form a second lock cavity 203 therein for at least partially housing the first lock body 10. A second operation hole 202 is formed on a side wall of the second lock body 201, and the position of the second operation hole 202 is configured to correspond to the first operation hole 115 at least in part to form an operation portion 101 of a through hole type for operating the ball handle in an intersection area of the two when the second lock body 20 is fitted and rotated to a mutually locked position with respect to the first lock body 10, so that a user can directly apply force to the ball handle exposed by the overlapped through hole portion via the through hole formed by the two operation holes to drive the ball handle to be rotationally unlocked.

Therefore, in the present embodiment, the first operation hole 115 is used as the first operation portion, and the second operation hole 202 is used as the second operation portion.

In a preferred embodiment, the second operation hole 202 and the first operation hole 115 have the same size, so that they are substantially completely overlapped to form the through hole type operation portion 101 with a larger size.

In this embodiment, a second locking element inner end 204 is formed at an inner end of the second locking element main body 201, a second locking element outer end 205 is formed at an outer end, and a step portion is further formed at an inner wall of the second locking element outer end 205 to match with a front end edge of the first lock body 10.

A plurality of first locking parts 131 are correspondingly formed on the inner wall of the second locking part main body 201, and the positions and the number of the first locking parts 131 correspond to those of the second locking parts 132. Since the second locking member 132 is formed by a resilient plate, the first locking member 131 can be a through hole, a groove or a protrusion for the front end of the resilient plate to fit, so that the resilient plate and the through hole, the groove or the protrusion act to limit the rotation of the second lock body 20 and the first lock body 10.

In this embodiment, the first locking member 131 is a protrusion protruding from an inner wall of the second locking member main body 201, and acts on the second locking member 132 formed by the elastic sheet to limit relative rotation.

The utility model discloses an in each embodiment, establish second lock body 20 at first lock body 10 overcoat through the adoption to make this protector's structural stability obviously promote, the protection lock that can effectively avoid assembling the type can lead to this protector to be opened by accident because of reasons such as collision, extrusion and expose the spherical handle that originally should be protected by it not enough. And the assembly, the use and the like are very convenient.

Example two

As shown in fig. 9-10, the main structure of a protecting device of a ball handle lock is the same as the first embodiment, and will not be described again. The main difference is that the second lock body 20 of the present embodiment does not have the first operation hole 115 of the first embodiment, but the soft rubber 105 is molded at the position of the original first operation hole 115 by secondary encapsulation, fixation and the like, so that the soft rubber 105 acts on the spherical handle to drive the spherical handle to unlock.

In this embodiment, the second operation hole 202 of the first lock body 10 is still provided, so that the soft rubber member 105 can directly contact with the spherical handle.

Of course, in other embodiments, the soft rubber member 105 may also be disposed at the corresponding positions on the first lock body 10 and the second lock body 20 at the same time, that is, the soft rubber member 105 is disposed at the first operation hole 115 and the second operation hole 202 in the first embodiment. Or, the soft rubber 105 is only arranged at the second operation hole 202, and the first operation hole 115 is still a through hole.

EXAMPLE III

As shown in fig. 9-10, the main structure of a protecting device of a ball handle lock is the same as that of the first embodiment, and will not be described again. The main difference is that the second lock body 20 of the present embodiment does not have the first operation hole 115 of the first embodiment, but an operation spring 106 is formed at the position of the original first operation hole 115, so that the operation spring 106 acts on the spherical handle to drive the spherical handle to unlock.

In this embodiment, the operation spring 106 is formed by disposing a U-shaped spring slot 107 on a side wall of the second lock body 20, the spring slot 107 penetrates through the side wall of the second lock body 20 so that a rear end of the operation spring 106 is connected to a main body of the second lock body 20, and a front end thereof is elastically movably disposed.

In this embodiment, the second operation hole 202 of the first lock body 10 is still provided. After the operation spring plate 106 is pressed, the operation spring plate passes through the second operation hole 202 and then acts on the spherical handle, and the spherical handle is rotated to drive the spherical handle to rotate and unlock.

Of course, in other embodiments, the operation resilient piece 106 may also be disposed at the corresponding positions on the first lock body 10 and the second lock body 20 at the same time, that is, the operation resilient piece 106 is disposed at the first operation hole 115 and the second operation hole 202 in the first embodiment. Alternatively, the operation spring 106 is only disposed at the second operation hole 202, and the first operation hole 115 is still a through hole. Or, the first operation hole 115 in the embodiment is replaced by the soft rubber piece 105 in the second embodiment, so that the operation spring 106 acts on the soft rubber piece 105 to drive the spherical handle to rotate so as to unlock the door lock.

Claims (10)

1. A guard for a ball handle lock comprises a first lock body (10), a lock cavity (104) for at least partially receiving a ball handle therein being formed in the first lock body (10); it is characterized in that the preparation method is characterized in that,

the first lock body (10) comprises at least two lock body (111), the lock body (111) is hollow to form a lock cavity (112), and a first operation hole (115) is formed on the side wall; the upper end and the lower end of the locking piece main body (111) are provided with a first connecting piece (121) or a second connecting piece (123), and the corresponding end of the adjacent locking piece main body (111) is connected with the second connecting piece (123) through the first connecting piece (121);

the protection device further comprises a second lock body (20) detachably connected with the first lock body (10), the second lock body (20) is at least partially sleeved outside the first lock body (10), and a second operation hole (202) is formed in the second lock body (20); a second locking piece (132) and a first locking piece (131) are respectively arranged on the outer side wall of the first lock body (10) and the inner side wall of the second lock body (20);

the second lock body (20) rotates along the anticlockwise direction or the clockwise direction relative to the first lock body (10), the second locking piece (132) is matched with the first locking piece (131) to enable the second lock body (20) to be locked with the first lock body (10), and the second operation hole (202) at least partially corresponds to the first operation hole (115) to form an operation portion (101).

2. A guard for a ball handle lock comprises a first lock body (10), a lock cavity (104) for at least partially receiving a ball handle therein being formed in the first lock body (10); it is characterized in that the preparation method is characterized in that,

the first lock body (10) comprises at least two lock body (111), the lock body (111) is hollow to form a lock cavity (112), and a first operating part is formed on the side wall; the upper end and the lower end of the locking piece main body (111) are provided with a first connecting piece (121) or a second connecting piece (123), and the corresponding end of the adjacent locking piece main body (111) is connected with the second connecting piece (123) through the first connecting piece (121);

the protection device further comprises a second lock body (20) detachably connected with the first lock body (10), the second lock body (20) is at least partially sleeved outside the first lock body (10), and a second operation part is arranged on the second lock body (20); a second locking piece (132) and a first locking piece (131) are respectively arranged on the outer side wall of the first lock body (10) and the inner side wall of the second lock body (20);

the second lock body (20) rotates anticlockwise or clockwise relative to the first lock body (10), the second locking piece (132) is matched with the first locking piece (131) to enable the second lock body (20) to be locked with the first lock body (10), and the second operation part or the first operation part is a soft rubber piece (105) or an operation elastic piece (106).

3. A knob lock guard according to claim 1 or 2, wherein the first (121) and second (123) connecting members are provided with a recess portion (122) and a projection portion (124), respectively, the recess portion (122) and the projection portion (124) cooperating to connect adjacent lock body (111);

the upper end part and the lower end part of the locking piece main body (111) are also provided with a first aligning piece (125) and a second aligning piece (126), and the first aligning piece and the second aligning piece are mutually matched convex blocks or grooves to be positioned when the adjacent locking piece main bodies (111) are mutually spliced;

the number of the first connecting pieces (121) and the number of the second connecting pieces (123) are two, and the first aligning piece (125) or the second aligning piece (126) is arranged between the two first connecting pieces (121).

4. The knob lock guard according to claim 2, wherein the second operating portion is a soft plastic (105) or an operating spring (106) and the first operating portion is a first operating hole (115).

5. A guard arrangement as claimed in claim 1, 2 or 4, characterised in that the second locking member (132) is a resilient tab arranged in the circumferential direction of the lock body (111), and the first locking member (131) is a correspondingly arranged through hole, recess or projection, such that the resilient tab and the through hole, recess or projection interact to limit the rotation of the second lock body (20) and the first lock body (10).

6. A knob lock guard according to claim 5, wherein the locking part (130) is further formed on an outer side wall of the locking part main body (111), the locking part (130) comprising a first locking part (134), a second locking part (135) and a neck part (133) therebetween; the second locking part (135) is in a bell mouth shape so that the outer width thereof is larger than the inner width thereof; the second locking member (132) is provided at the first locking portion (134).

7. A knob lock guard according to claim 6, wherein the locking part (130) is concavely formed on an outer side wall of the locking piece body (111),

the tail end of the elastic sheet is connected with the locking piece main body (111), the front end and two sides of the elastic sheet are separated from the locking piece main body (111) by the U-shaped grooves, and an elastic sheet convex block is also arranged on the elastic sheet in a protruding mode;

the second lock body (20) comprises a second lock body (201), the interior of the second lock body (201) is hollow to form a second lock cavity (203) for at least partially sleeving the first lock body (10) therein; a second operation hole (202) is formed on the side wall of the second lock body (201), and the second operation hole (202) at least partially corresponds to the first operation hole (115) so as to form an operation part (101) for operating the spherical handle in the crossing area of the second lock body and the first lock body; the first locking piece (131) is formed on the inner wall of the second locking piece main body (201);

the first lock body (10) comprises two, three or four lock body (111), the second lock body (20) approaches to the first lock body (10) to be sleeved on the first lock body, and rotates anticlockwise or smoothly to lock;

a first end hole (102) and a second end hole (103) are respectively arranged on the outer end surface and the inner end surface of the protection device, and the first end hole (102) and the second end hole (103) are communicated with a lock cavity (104).

8. A protection device of a spherical handle lock comprises a first lock body (10), wherein a lock cavity (104) for at least partially accommodating a spherical handle is formed in the first lock body (10); it is characterized in that the preparation method is characterized in that,

the first lock body (10) comprises at least two lock body (111), the lock body (111) is hollow to form a lock cavity (112), and a first operating part is formed on the side wall;

the protection device further comprises a second lock body (20) detachably connected with the first lock body (10), the interior of the second lock body (20) is hollow to form a second lock cavity (203), and a second operation part is formed on the side wall of the second lock body (20);

a second locking piece (132) and a first locking piece (131) are respectively arranged on the outer side wall of the first lock body (10) and the inner side wall of the second lock body (20); the second lock body (20) rotates anticlockwise or clockwise relative to the first lock body (10), and the second locking piece (132) is in concave-convex fit with the first locking piece (131) so that the second lock body (20) is locked with the first lock body (10);

the second operation portion is provided corresponding to the first operation portion to form an operation portion (101) for operating the rotary unlocking of the ball handle.

9. The bail latch guard according to claim 8, wherein the first operating portion is a first operating hole (115) and the second operating portion is a second operating hole (202) at least partially overlapping to form a pass-through operating portion (101); or the like, or, alternatively,

the second operation part is a soft plastic piece (105), and the first operation part is a first operation hole (115) or the soft plastic piece (105); or the like, or, alternatively,

the second operation part is an operation elastic sheet (106), the first operation part is a first operation hole (115), an operation elastic sheet (106) or a soft rubber piece (105), or the second operation part is a second operation hole (202) or a soft rubber piece (105), and the first operation part is the operation elastic sheet (106).

10. The knob lock guard according to claim 9, wherein the second locking member (132) is a resilient piece disposed along the circumferential direction of the lock body (111), and the first locking member (131) is a through hole, a groove or a protrusion disposed correspondingly, such that the resilient piece and the through hole, the groove or the protrusion interact to limit the rotation of the second lock body (20) and the first lock body (10);

the tail end of the elastic sheet is connected with the locking piece main body (111), the front end and the two sides of the elastic sheet are separated from the locking piece main body (111) by the U-shaped groove, and an elastic sheet convex block is also convexly arranged on the elastic sheet;

a locking part (130) is further formed on the outer side wall of the locking piece main body (111), and the locking part (130) comprises a first locking part (134), a second locking part (135) and a neck part (133) positioned between the first locking part and the second locking part; the second locking part (135) is in a bell mouth shape so that the outer width thereof is larger than the inner width thereof; a second locking member (132) is provided at the first locking portion (134);

the first lock body (10) comprises two, three or four lock body (111), and the second lock body (20) approaches to the first lock body (10) to be sleeved on the first lock body and rotates anticlockwise or smoothly to lock.

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