CN219387530U - Rotary handle lock - Google Patents

Abstract

The utility model belongs to the field of child protection products, and particularly relates to a rotary handle lock. The rotary handle lock comprises a lock seat, a lock body and a rotary locking mechanism, wherein the lock body rotates relative to the lock seat to switch between a locking state and an unlocking state, the rotary locking mechanism at least keeps the lock body in the locking state, and the lock body is provided with a locking arm which is arranged offset from an axis; the rotation locking mechanism can be the combination of the rotation locking piece and the tongue cavity or the combination of the first contact limiting part and the second contact limiting part. The rotary handle lock has compact structure, convenient use and stable locking.

Description

Rotary handle lock

Technical Field

The utility model belongs to the field of child protection products, and particularly relates to a rotary handle lock.

Background

Door locks, as the name implies, are devices used to lock a door to prevent others from opening the door. The door lock can be respectively a spherical door lock, a handle lock, an intelligent door lock and the like according to different structures. In daily life, an indoor door (for example, a bedroom door) is generally locked by adopting a spherical door lock or a handle lock, and the handle lock can be opened by rotating a handle during daily use.

In life, children may simulate handling a handle or playing a handle lock as a toy for curiosity and other reasons while moving indoors, which may lead to safety problems such as entering a bedroom, back locking themselves or pinching fingers, which is an undesirable condition for adults. Although an adult can avoid child operations by locking the door using a key, this also causes operational inconvenience to the adult.

Therefore, it is necessary to develop a handle lock guard to avoid child operations. Chinese patent No. CN209742515U discloses an adjustable door handle child safety lock, which achieves the purpose of protection by limiting the handle by a limiting clamp. Chinese patent No. CN109930904a discloses a door handle safety lock, which achieves the purpose of protection by limiting the handle by a limiting support arm.

Disclosure of Invention

The utility model aims to provide a rotary handle lock which is compact in structure, convenient to use and stable in locking.

A rotary handle lock having a locked state and an unlocked state, the rotary handle lock comprising:

a lock base for securing to a door body to provide a swivel base.

The lock body is rotationally matched to the lock seat by taking the rotation axis as an axis. To effect switching of the rotary handle lock between the locked and unlocked states by rotation thereof relative to the lock base; the lock body is also provided with a lock arm for limiting a handle of the door lock, and the lock arm is arranged deviating from the rotation axis.

And a rotational locking member movably disposed between the lock base and the lock body to prevent or allow rotation of the lock body relative to the lock base at least in a locked state.

The lock body and the lock seat are respectively provided with a shaft piece and a shaft cavity for the shaft piece to be sleeved in, and the outer side of the shaft cavity or the inner side of the shaft piece is provided with a tongue cavity. In the locked state, the lock tongue of the rotary locking piece extends into the tongue cavity to prevent the lock body from rotating relative to the lock seat or the lock tongue of the rotary locking piece is separated from the tongue cavity to allow the lock body to rotate relative to the lock seat.

In one embodiment of the utility model, at least two tongue cavities are provided, and the two tongue cavities are respectively used for the bolt to extend in a locking state and an unlocking state so as to prevent the lock body from rotating relative to the lock seat and lock the rotary handle lock in the locking state or the unlocking state.

In one embodiment of the utility model, the lock body is provided with a first shaft member and a second shaft member, the lock seat is provided with the first shaft member and the second shaft member, the first shaft member is arranged in the second shaft member, and the first shaft member and the second shaft member are concentrically arranged; the first shaft piece is mutually matched with the first shaft cavity and the second shaft piece is mutually matched with the second shaft cavity in a sleeved mode respectively.

In one embodiment of the present utility model, the tongue cavity is disposed outside the first shaft cavity, and the rotation locking member is disposed inside the first shaft and is movably disposed to extend or retract with respect to the first shaft.

In one embodiment of the utility model, the upper end of the lock body is provided with a locking arm, the lower end is provided with a second shaft cavity, and the rotary locking piece is movably arranged along the radial direction relative to the first shaft piece.

In one embodiment of the utility model, a first hole is arranged at the front side of the lock body, the rotary locking piece is movably arranged in the first hole in a reciprocating displacement manner, a locking opening is formed at the upper end of the first hole, and a lock tongue of the rotary locking piece stretches out of the locking opening and is clamped in the tongue cavity to lock the rotation of the lock body relative to the lock seat. The first hole is internally provided with a clamping hole, and the clamping piece of the rotary locking piece passes through the clamping hole and then is assembled in the first hole through a clamping head arranged on the clamping piece; the spring bolt sets up in the upper end of rotating the locking piece.

In one embodiment of the utility model, the rotational lock is exposed at the front or side of the lock body for operation.

In one embodiment of the utility model, a second hole is formed in the center of the lock seat, a connecting column is arranged in the center of the first shaft piece, and the connecting column acts on the second hole to fasten the lock seat and the lock body.

In one embodiment of the utility model, the lock body is provided with a first shaft member and a second shaft member, the lock seat is provided with the first shaft member and the second shaft member, the first shaft member is arranged in the second shaft member, and the first shaft member and the second shaft member are concentrically arranged; the first shaft piece is mutually matched with the first shaft cavity and the second shaft piece is mutually matched with the second shaft cavity in a sleeved mode respectively.

In one embodiment of the present utility model, the tongue cavity is disposed on the inner side of the second shaft member, and the rotation locking member is disposed on the outer side of the second shaft cavity and is movably disposed to extend or retract with respect to the second shaft cavity.

In one embodiment of the utility model, the rotational lock is movably disposed radially relative to the second shaft cavity; the rotary locking piece is exposed out of the front or side surface of the lock body for operation; the lock body is also provided with a bottom plate for assembling the rotary locking piece on the lock body.

In one embodiment of the utility model, the rotary locking piece is movably arranged in a reciprocating displacement way, and the locking state and the unlocking state are arranged at an angle of 90 degrees or 180 degrees;

the locking arm comprises two blocking arms which are oppositely arranged and a baffle plate connected between the two blocking arms.

In one embodiment of the utility model, the locking arm comprises two blocking arms arranged opposite each other.

In one embodiment of the utility model, the locking arm is semi-circular in shape.

A rotary handle lock having a locked state and an unlocked state, the rotary handle lock comprising:

a lock base for securing to a door body to provide a swivel base.

A lock body rotatably fitted to the lock base about a rotation axis to effect switching of the rotary handle lock between a locked state and an unlocked state by rotation thereof relative to the lock base; the lock body is also provided with a lock arm for limiting a handle of the door lock, and the blocking lock is arranged deviating from the rotation axis so as to move rotationally around the axis.

The lock body and the lock seat are respectively provided with a shaft piece and a shaft cavity for the shaft piece to be sleeved in, and the shaft piece and the shaft cavity are matched to form a bearing structure.

The lock body and the lock seat are also respectively provided with a first contact limiting part and a second contact limiting part. In the locking state, the first contact limiting part is contacted with the second contact limiting part to limit the rotation of the lock body relative to the lock seat so that the rotary handle lock is kept in the unlocking state.

In another embodiment of the present utility model, the first contact limiting portion and the second contact limiting portion are in friction fit.

In another embodiment of the present utility model, the first contact limiting portion and the second contact limiting portion are matched with each other through convex points and concave points.

In another embodiment of the present utility model, the first contact limiting portion and the second contact limiting portion are matched with each other through a bump.

In another embodiment of the present utility model, the lock body is provided with a first shaft member and a second shaft member, the lock seat is provided with a first shaft member and a second shaft member, the first shaft member is disposed in the second shaft member, and the first shaft member and the second shaft member are concentrically disposed. The first shaft piece is mutually matched with the first shaft cavity and the second shaft piece is mutually matched with the second shaft cavity in a sleeved mode respectively.

In another embodiment of the present utility model, the first contact limiting portion and the second contact limiting portion are respectively disposed between the first shaft member and the first shaft cavity and/or between the second shaft member and the second shaft cavity.

The beneficial effects of the utility model are as follows:

1. the handle lock has compact structure, easy production and assembly, and convenient use, and works in a rotary mode.

2. The handle lock is kept in a locked state relative to the lock seat in rotation, accidental unlocking is not easy to occur, and safety is high.

3. The handle lock is preferably operated in a mode of key translation and lock body rotation, and can realize single-hand operation and convenient operation.

4. The handle lock preferably further comprises a locking mechanism for locking the rotation of the lock body in an unlocked state, so that accidental locking caused by accidents such as door closing, misoperation of children and the like can be avoided.

Drawings

FIG. 1 is a schematic view showing a structure of a handle lock in a locked state according to a first embodiment of the present utility model;

FIG. 2 is a schematic view of the handle lock of FIG. 1 in an unlocked state;

FIG. 3 is an exploded view of the handle lock of FIG. 1;

FIG. 4 is a schematic rear elevational view of the first locking member of the handle lock of FIG. 1;

FIG. 5 is an exploded view of the first lock of FIG. 4;

FIG. 6 is a schematic front view of the first lock of the embodiment of FIG. 1 and an enlarged partial schematic view thereof;

FIG. 7 is a schematic rear view of the first lock of FIG. 6 and an enlarged partial schematic thereof;

FIG. 8 is a schematic rear view of the rotational lock of the embodiment of FIG. 1;

FIG. 9 is a schematic cross-sectional view of the structure of FIG. 4 taken along section A-A;

FIG. 10 is a schematic cross-sectional structural view of the handle lock of FIG. 5 with the rotary lock displaced to an unlocked position;

FIG. 11 is a schematic view showing a front view of a handle lock in a locked state according to a second embodiment of the present utility model;

FIG. 12 is a schematic rear elevational view of the handle lock of FIG. 11;

FIG. 13 is an exploded view of the structure of FIG. 12;

FIG. 14 is a schematic cross-sectional view of the structure of FIG. 11 taken along section B-B;

FIG. 15 is a schematic cross-sectional view of the twist lock of FIG. 14 with the twist lock displaced to an unlocked position;

fig. 16 is a schematic view of the structure of the lock base in the handle lock of the embodiment of fig. 11.

The lock body 10, the lock base 20, the rotation locking piece 30, the rotation axis 100, the lock arm 11, the second shaft cavity 12, the first shaft piece 13, the second shaft piece 21, the bottom plate 22, the lock tongue 31, the clamping piece 32, the clamping hole 33, the guide groove 34, the clamping head 321, the first hole 101, the guide block 102, the hole bottom wall 103, the locking opening 104, the hole side wall 105, the handle cavity 110, the blocking arm 111, the blocking plate 112, the connecting column 131, the third hole 132, the first shaft cavity 201, the second hole 202, the tongue cavity 211 and the limiting upper end 311.

Detailed Description

The utility model will be described in detail below with respect to certain specific embodiments thereof in order to better understand the utility model and thereby to more clearly define the scope of the utility model as claimed. It should be noted that the following description is only some embodiments of the inventive concept and is only a part of examples of the present utility model, wherein the specific direct description of the related structures is only for the convenience of understanding the present utility model, and the specific features do not naturally and directly limit the implementation scope of the present utility model. Conventional selections and substitutions made by those skilled in the art under the guidance of the inventive concept should be considered as being within the scope of the claimed utility model.

A rotary handle lock comprising a lock base 20 for fixing to a door body and a lock body 10 rotatably fitted to the lock base 20 about a rotation axis 100 as an axis, whereby switching of the rotary handle lock between a locked state and an unlocked state thereof is achieved by rotation of the lock body 10 relative to the lock base 20.

The lock body 10 is provided with a handle for limiting the door lock and a lock arm 11 deviating from the rotation axis 100, the lock body 10 and the lock seat 20 are respectively provided with a shaft member and a shaft cavity for the shaft member to be sleeved in, and the shaft member and the shaft cavity are matched to form a bearing structure.

The rotary handle lock further comprises a rotation locking mechanism for locking or unlocking the rotation of the lock body 10 relative to the lock base 20, which rotation locking mechanism limits or locks the rotation of the lock body 10 to maintain the state at least when the rotary handle lock is in the locked state.

It is, of course, preferable that the rotation of the lock body 10 is also limited or locked to be maintained in the unlocked state of the rotary handle lock, so that accidental locking of the rotary handle lock during use can be avoided.

The rotation locking mechanism can be realized by adding a rotation locking piece 30, wherein the rotation locking piece 30 is movably arranged between the lock base 20 and the lock body 10, so that the lock body 10 is prevented from rotating relative to the lock base 20 or is separated from the lock body to allow rotation by extending a lock tongue 31 of the rotation locking piece 30 into a tongue cavity 211.

In addition, the rotation locking mechanism can also be realized by a first contact limiting part and a second contact limiting part which are mutually matched, and the first contact limiting part and the second contact limiting part can be in friction fit, convex point and concave point fit or convex point and convex point fit.

The relative angle between the locking state and the unlocking state of the rotary handle lock can be specifically set according to the requirement.

Example 1

A rotary handle lock is used for being fixed to a proper position on the surface of a door body, so that the door body is locked and unlocked through rotation of the handle lock, the handle lock limits the handle to prevent the handle from rotating to open the door body in the locked state, and the handle is released from limiting the handle in the unlocked state, and the handle is free to rotate to open the door body.

The rotary handle lock includes a lock housing 20 for fixing to a door body to provide a rotary base of the handle lock, a lock body 10 rotatably fitted to the lock housing 20 to be switched between a locked state and an unlocked state by rotation thereof relative to the lock housing 20, and a rotary lock member 30 movably provided between the lock housing 20 and the lock body 10 to lock or unlock relative rotation of the lock body 10 relative to the lock housing 20.

As shown in fig. 1, in the locked state, the lock base 20 is fixed at a proper position on the door body to receive the handle in the handle cavity 110, so that the rotation of the handle is locked by the lock arm 11 to be unable to rotate, and the door body is unable to be opened.

As shown in fig. 2, in the unlocked state, the lock body 10 is rotated 180 ° to shift the lock arm 11 from the position of the handle, and the handle is restored to a freely rotatable state, so that the door body can be opened.

In this embodiment, the rotation angle between the locked state and the unlocked state of the lock body 10 is 180 °. However, this is exemplary, and in other embodiments, the angle between the locked and unlocked states may be other preset angles, such as 90 °.

As shown in fig. 3, the lock base 20 has a columnar structure and is flat as a whole. The lock base 20 comprises a cylindrical second shaft member 21, a first shaft cavity 201 in the shape of a cylindrical cavity is concentrically arranged in the second shaft member 21, a second hole 202 is arranged at the center of the lock base 20, and two tongue cavities 211 which are arranged at 180 degrees are arranged on the radial outer side of the first shaft cavity 201.

The relative angle of the two tongue cavities 211 corresponds to the relative angle between the locked and unlocked states of the rotary handle lock. Thus, changing the relative angle of the two tongue cavities 211 changes the relative angle of the locked and unlocked states. For example, both are set to a 90 ° setting.

As shown in fig. 4, the rear structure is shown after the rotation locking member 30 is assembled to the lock body 10. The lock body 10 is integrally formed of upper and lower parts disposed adjacently, the upper end is connected with the lock arm 11 or integrally formed, and the lower end is engaged with the lock base 20 so that the lock body 10 is formed in a rotating fit.

A second shaft cavity 12 in a ring shape is arranged at the rear side of the lower end of the lock body 10, and the second shaft cavity 12 is used for the second shaft piece 21 to be sleeved in; the second shaft cavity 12 is also internally provided with a first shaft element 13 concentrically arranged, and the first shaft element 13 is used for being sleeved in the first shaft cavity 201; and, a connecting post 131 and a third hole 132 provided in the connecting post 131 are provided at the center of the first shaft member 13 (also at the center of the second shaft chamber 12), and the connecting post 131 acts on the second hole 202 to firmly connect the lock base 20 and the lock body 10. In this embodiment, the fastening screw may be screwed into the third hole 132 after passing through the second hole 202 for fastening, and in other embodiments, a fastening structure may be provided on the connecting post 131 for fastening with the second hole 202.

In this embodiment, the second shaft member 21 and the first shaft member 13 are respectively sleeved in the second shaft cavity 12 and the first shaft cavity 201, so that the lock body 10 is rotatably matched to the lock base 20.

In the present embodiment, the rotation locking member 30 is reciprocally movably disposed in the first hole 101 to lock or unlock the rotation of the lock body 10 with respect to the lock base 20 by the movement of the rotation locking member 30, thereby allowing the lock body 10 to be switched between the locked state and the unlocked state.

As shown in fig. 5, 6 and 7, the first hole 101 is formed at the front side of the lower end of the lock body 10, and the first hole 101 is concavely provided and has a length so as to allow the rotation lock member 30 to be reciprocally slidably provided. The upper end of the first hole 101 is formed with a locking opening 104 to allow the locking tongue 31 of the rotation locking member 30 to protrude to be engaged in the tongue cavity 211 to lock the rotation of the lock body 10 relative to the lock base 20.

In the present embodiment, the first hole 101 is formed by one hole bottom wall 103 and two hole side walls 105, and the first hole 101 is in a rectangular parallelepiped shape as a whole. The two sides of the first hole 101 are provided with the clamping holes 33, so that after the clamping piece 32 of the rotation locking piece 30 passes through the clamping holes 33, the rotation locking piece 30 is limited in the first hole 101 and cannot be separated by buckling of the clamping head 321 positioned on the clamping piece 32.

In this embodiment, the movable travel of the rotation locking member 30 in the first hole 101 may be limited by the displacement of the detent member 32 in the detent hole 33, or by the displacement of the upper and lower ends of the rotation locking member 30 in the first hole 101.

As shown in fig. 8, the front end of the rotation locking member 30 is formed with a locking tongue 31, and the thickness of the locking tongue 31 is smaller than that of other parts, so that a limiting upper end 311 is formed on the rotation locking member 30, and the limiting upper end 311 is used for abutting against the upper end of the first hole 101 to limit the movable stroke of the rotation locking member 30 in the first hole 101. Of course, if the limiting action is not required, the limiting upper end 311 is not provided, i.e. the rotation locking member 30 is provided with the same thickness everywhere but the bolt 31 is allowed to pass through the locking opening 104.

As shown in fig. 6 and 8, in this embodiment, the first hole 101 is provided therein with a guide block 102, and the bottom surface of the rotation locking member 30 is further provided with a guide groove 34, which cooperate to enable the rotation locking member 30 to be movably disposed in a reciprocating manner along a linear direction. Of course, in other embodiments, it is also possible to provide the guide block 102 and the guide groove 34 instead of being guided by rotating the locking member 30 against the first hole 101.

As shown in fig. 3, the lock base 20 is provided with tongue cavities 211 at upper and lower ends, respectively, and the tongue cavities 211 are located radially outside the first shaft cavity 201. Since the lock body 10 is rotatably provided, the rotation lock member 30 can be configured to be reciprocally movably provided in the radial direction thereof with respect to the first shaft member 13. The tongue 31 of the rotation lock 30 is provided so as to be extendable or retractable with respect to the first shaft 13.

As shown in fig. 9 and 10, the lock or unlock of the rotation of the lock body 10 can be achieved by the vertical displacement of the rotation lock member 30 along the first hole 101, such that the handle lock is maintained in the locked or unlocked state. Particularly in the locked state, the protection function of the handle lock is greatly affected if the handle lock is not locked.

In the present embodiment, the rotation of the lock body 10 is locked by the rotation locking member 30 in both the locked state and the unlocked state, i.e., the rotation of the lock body 10 is locked by the tongue 31 extending into the tongue cavity 211. As shown in fig. 9, the locking tongue 31 of the rotation locking member 30 is extended to lock rotation, and as shown in fig. 10, the locking tongue 31 of the rotation locking member 30 is retracted to unlock rotation.

As shown in fig. 9 and 10, the handle lock further has a rotation axis 100, and the lock body 10 is rotatably provided with respect to the lock base 20 about the rotation axis 100.

Wherein the second shaft member 21, the first shaft member 13, the second shaft chamber 12 and the first shaft chamber 201 are concentrically arranged, and the rotation axis 100 is arranged through their center points and perpendicularly to the bottom surface of the lock base 20.

In addition, in the present embodiment, the locking arm 11 has a semi-closed structure, and includes two blocking arms 111 disposed opposite to each other and a baffle 112 connected between the two blocking arms 111, as shown in fig. 3.

In other embodiments, the locking arm 11 may comprise only two blocking arms 111 arranged opposite to each other, so that the installation position of the rotary handle lock is wider, the installation position of the handle lock is near the tail end of the handle as shown in fig. 1, and the handle lock with the locking arm 11 formed by only two blocking arms 111 can be any position of the handle.

Example two

As shown in fig. 11-16, a rotary handle lock has the same core principle as the first embodiment, but is different in two points: the first locking arm 11 has different shapes, and the second locking arm 10 has different rotating fit and rotating locking structures with the lock base 20.

As for the difference one, it can be seen intuitively from fig. 11 that the lock arm 11 of the handle lock of the present embodiment is similar to a semicircular arc shape as a whole.

As for the second difference, as can be seen from fig. 12, the rotation locking member 30 is changed from being located on the front surface of the lock body 10 to being located on the side surface thereof; and the rotation lock member 30 is also changed from being extended radially outward or retracted inward from the inside of the first shaft member 13 to being extended radially into the second shaft chamber 12 or retracted from the outside of the second shaft chamber 12 to be disengaged from the second shaft chamber 12.

As shown in fig. 16, in this embodiment, the locking tongue 31 provided on the second shaft member 21 in the radial direction is configured to extend into or retract from the rotary locking member 30, so as to lock or unlock the lock body 10 with respect to the rotation of the lock base 20.

Further, as shown in fig. 13, the handle lock of the present embodiment further includes a bottom plate 22, and the bottom plate 22 is used for the rotation lock member 30 to be fitted into the bottom surface of the lock body 10 and partially exposed from the first hole 101 for operation. Of course, in other embodiments, the bottom plate 22 may be integrally formed with the lock base 20 or may be formed of the lock base 20.

Although in the above two embodiments the rotation of the lock body 10 relative to the lock base 20 is locked or unlocked by the rotation lock member 30, other rotation lock mechanisms may be used instead.

For example, in other embodiments, the lock body 10 and the lock base 20 further have a first contact limiting portion and a second contact limiting portion, respectively. In a locking state, the first contact limiting part and the second contact limiting part are in contact to limit so that the rotary handle lock is kept in an unlocking state; the first contact limiting part and the second contact limiting part can be in friction fit, convex point and concave point fit or convex point and convex point fit. Since the first shaft member 13 and the first shaft cavity 201 and the second shaft member 21 and the second shaft cavity 12 are both in a relative rotation fit relationship, the first contact limiting portion and the second contact limiting portion may be respectively disposed at least one set of relative rotation fit positions.

Wherein friction fit refers to adjusting a partial shape of the outer wall of the first shaft member 13 and/or the inner wall of the first shaft cavity 201, for example, partially protruding to contact interference, so that friction resistance is formed at least when the lock body 10 rotates to a locked state with respect to the lock base 20. The convex point and concave point are matched (convex point and convex point are matched) which means that convex points and concave points (convex points are respectively arranged) are formed on the convex point and the concave point, so that resistance is formed at least in a locking state. Wherein, the bump material has proper elasticity.

Claims (10)

1. A rotary handle lock having a locked state and an unlocked state, the rotary handle lock comprising:

a lock base (20), the lock base (20) being for fixing to a door body;

a lock body (10), the lock body (10) being axially rotatably fitted to the lock base (20) about a rotation axis (100) to effect switching of the rotary handle lock between a locked state and an unlocked state by rotation thereof relative to the lock base (20); the lock body (10) is also provided with a lock arm (11) for limiting a handle of the door lock, and the lock arm (11) is arranged deviating from the rotation axis (100); the method comprises the steps of,

a rotational locking member (30), the rotational locking member (30) being movably arranged between the lock base (20) and the lock body (10) to prevent or allow rotation of the lock body (10) relative to the lock base (20) at least in a locked state;

the lock body (10) and the lock seat (20) are respectively provided with a shaft piece and a shaft cavity for the shaft piece to be sleeved in, and the outer side of the shaft cavity or the inner side of the shaft piece is provided with a tongue cavity (211);

in the locked state, the lock tongue (31) of the rotary locking piece (30) stretches into the tongue cavity (211) to prevent the rotation of the lock body (10) relative to the lock seat (20) or the lock tongue (31) of the rotary locking piece (30) is separated from the tongue cavity (211) to allow the rotation of the lock body (10) relative to the lock seat (20).

2. The rotary handle lock according to claim 1, wherein at least two tongue cavities (211) are provided, and the tongue cavities (211) are respectively used for the tongue (31) to extend in the locked state and the unlocked state to prevent the rotation of the lock body (10) relative to the lock seat (20) so as to lock the rotary handle lock in the locked state or the unlocked state.

3. The rotary handle lock according to claim 1 or 2, wherein the lock body (10) is provided with a first shaft member (13) and a second shaft member (12), the lock seat (20) is provided with a first shaft member (201) and a second shaft member (21), the first shaft member (13) is arranged in the second shaft member (12), the first shaft member (201) is arranged in the second shaft member (21), and the first shaft member (201) and the second shaft member are concentrically arranged; the first shaft piece (13) is respectively sleeved with the first shaft cavity (201) and the second shaft piece (21) is mutually matched with the second shaft cavity (12);

the tongue cavity (211) is arranged on the outer side of the first shaft cavity (201), and the rotation locking piece (30) is arranged on the inner side of the first shaft piece (13) and is movably arranged in a stretching or retracting mode relative to the first shaft piece (13).

4. A rotary handle lock according to claim 3, wherein the lock body (10) is provided at its upper end with a locking arm (11) and at its lower end with a second axial cavity (12), the rotational locking member (30) being arranged radially movable with respect to the first axial member (13).

5. The rotary handle lock according to claim 4, wherein a first hole (101) is formed at the front side of the lock body (10), the rotary locking piece (30) is movably arranged in the first hole (101) in a reciprocating displacement manner, a locking opening (104) is formed at the upper end of the first hole (101), and a lock tongue (31) of the rotary locking piece (30) is clamped in a tongue cavity (211) after extending out of the locking opening (104) so as to lock the rotation of the lock body (10) relative to the lock seat (20);

a clamping hole (33) is formed in the first hole (101), and the clamping piece (32) of the rotary locking piece (30) passes through the clamping hole (33) and then is assembled in the first hole (101) through a clamping head (321) arranged on the clamping piece (32); the lock tongue (31) is arranged at the upper end of the rotary locking piece (30);

the rotary locking piece (30) is exposed on the front or the side of the lock body (10) for operation;

the lock is characterized in that a second hole (202) is formed in the center of the lock seat (20), a connecting column (131) is arranged in the center of the first shaft piece (13), and the connecting column (131) acts on the second hole (202) to fasten the lock seat (20) and the lock body (10).

6. The rotary handle lock according to claim 1 or 2, wherein the lock body (10) is provided with a first shaft member (13) and a second shaft member (12), the lock seat (20) is provided with a first shaft member (201) and a second shaft member (21), the first shaft member (13) is arranged in the second shaft member (12), the first shaft member (201) is arranged in the second shaft member (21), and the first shaft member (201) and the second shaft member are concentrically arranged; the first shaft piece (13) is respectively sleeved with the first shaft cavity (201) and the second shaft piece (21) is mutually matched with the second shaft cavity (12);

the tongue cavity (211) is arranged on the inner side of the second shaft piece (21), and the rotation locking piece (30) is arranged on the outer side of the second shaft cavity (12) and is movably arranged in a stretching or retracting mode relative to the second shaft cavity (12).

7. The rotary handle lock according to claim 6, wherein the rotation lock (30) is movably arranged in a radial direction with respect to the second shaft cavity (12); the rotary locking piece (30) is exposed on the front or the side of the lock body (10) for operation; the lock body (10) is also provided with a bottom plate (22) for assembling the rotary locking piece (30) on the lock body (10).

8. The rotary handle lock according to claim 4 or 7, wherein the rotary locking member (30) is reciprocally movably arranged at an angle of 90 ° or 180 ° between the locked and unlocked states;

the locking arm (11) comprises two blocking arms (111) which are oppositely arranged and a baffle (112) which is connected between the two blocking arms (111), or the locking arm (11) comprises two blocking arms (111) which are oppositely arranged, or the locking arm (11) is in a semicircular arc shape.

9. A rotary handle lock having a locked state and an unlocked state, the rotary handle lock comprising:

a lock base (20), the lock base (20) being for fixing to a door body; and

a lock body (10), the lock body (10) being axially rotatably fitted to the lock base (20) about a rotation axis (100) to effect switching of the rotary handle lock between a locked state and an unlocked state by rotation thereof relative to the lock base (20); the lock body (10) is also provided with a lock arm (11) for limiting a handle of the door lock, and the lock arm (11) is arranged deviating from the rotation axis (100);

the lock body (10) and the lock seat (20) are respectively provided with a shaft piece and a shaft cavity for the shaft piece to be sleeved in, and the shaft piece and the shaft cavity are matched to form a bearing structure;

the lock body (10) and the lock seat (20) are also respectively provided with a first contact limiting part and a second contact limiting part, and in a locking state, the first contact limiting part is contacted with the second contact limiting part to limit the rotation of the lock body (10) relative to the lock seat (20) so as to enable the rotary handle lock to be kept in an unlocking state; the first contact limiting part and the second contact limiting part are matched through friction fit, convex points and concave points or convex points and convex points.

10. The rotary handle lock according to claim 9, wherein the lock body (10) is provided with a first shaft member (13) and a second shaft member (12), the lock base (20) is provided with a first shaft member (201) and a second shaft member (21), the first shaft member (13) is arranged in the second shaft member (12), the first shaft member (201) is arranged in the second shaft member (21), and the first shaft member (201) and the second shaft member are concentrically arranged; the first shaft piece (13) is respectively sleeved with the first shaft cavity (201) and the second shaft piece (21) is mutually matched with the second shaft cavity (12);

the first contact limiting part and the second contact limiting part are respectively arranged between the first shaft piece (13) and the first shaft cavity (201) and/or between the second shaft piece (21) and the second shaft cavity (12).