Ball back locking type lock structure

Abstract

The utility model discloses a ball back locking type lockset structure which comprises an inner door handle, an outer door handle and a square shaft, and a lock body and a ball back locking structure are arranged in the outer door handle. The ball back locking structure comprises a mounting seat, a back locking seat, a lock cylinder and two balls; a convex ring is arranged on the side surface of the mounting seat; semicircular avoiding grooves are formed in the symmetrical inner walls of the convex ring; a circular ring bulge is arranged on the side surface of the counter lock seat; circular through holes are formed in the symmetrical side walls of the circular ring bulge; an S-shaped protrusion is integrally formed in the middle of the end face of the lock cylinder, C-shaped ball grooves are formed in the two arched outer surfaces of the S-shaped protrusion, and the two balls are symmetrically arranged in a concave area of the S-shaped protrusion and can rotationally enter the C-shaped ball grooves. The lock cylinder is connected with the lock body and extends into the circular ring protrusion. The double-locking device is reasonable in structural arrangement, the balls are matched in the semicircular receding grooves, the double-locking seat and the mounting seat are limited to achieve double locking, operation is convenient and fast, double locking or unlocking operation can be rapidly achieved, and use safety and reliability can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of locks, and particularly relates to a ball anti-lock type lock structure. Background Art

[0002] A door lock is a lock structure in which a mechanical key drives an unlocking device to act on an unlocking point or a transmission structure of a mechanical lock. It is directly installed on a door handle and connected by a square shaft. After the door lock is unlocked, the unlocking operation can be realized through the square shaft. Although it can meet the use requirements in general cases, there is no corresponding anti-lock limit structure between the lock structure and the square shaft, which will affect the use safety and reliability to a certain extent, so the usability and practicality are limited. Content of the Utility Model

[0003] The purpose of the utility model is to provide a ball anti-lock type lock structure with reasonable structure and beneficial to improving the use safety and reliability.

[0004] The technical solution for realizing the purpose of the utility model is a ball anti-lock type lock structure, which includes an inner door handle, an outer door handle and a square shaft. A lock body and a ball anti-lock structure arranged between the lock body and the square shaft are provided inside the outer door handle;

[0005] The ball anti-lock structure includes a mounting seat, an anti-lock seat, a lock core and two balls;

[0006] A convex ring is provided on the side surface of the mounting seat, and semi-circular avoidance grooves are arranged on the symmetric inner walls of the convex ring;

[0007] A circular ring protrusion is provided on the side surface of the anti-lock seat, and circular through holes are arranged on the symmetric side walls of the circular ring protrusion;

[0008] An S-shaped protrusion is integrally formed in the middle of the end surface of the lock core. C-shaped ball grooves are arranged on the outer surfaces of the two arches of the S-shaped protrusion. The two balls are symmetrically arranged in the recessed area of the S-shaped protrusion and can rotate into the C-shaped ball grooves;

[0009] The lock core is connected to the lock body and extends into the circular ring protrusion. The circular ring protrusion is inserted into the convex ring, and the outer surface of the ball abuts against the semi-circular avoidance groove after passing through the circular through hole.

[0010] Further preferably: A return spring is sleeved on the outer surface of the circular ring protrusion;

[0011] Convex blocks are arranged on the symmetric outer walls of the convex ring, and two convex strips are fixed on the side surface of the anti-lock seat;

[0012] Pressure bending parts are integrally formed at both ends of the return spring, and the pressure bending parts respectively abut against the side surfaces of the convex blocks and the convex strips for positioning;

[0013] The rotation of the lock body drives the rotation of the anti-lock seat, and the convex strip drives the return spring to be compressed and store energy.

[0014] Further preferably: a clamping groove is provided on the inner wall of the anti-lock seat;

[0015] A clamping block is provided on the outer wall of the lock body;

[0016] The lock body is inserted into the anti-lock seat, and the clamping block is clamped into the clamping groove;

[0017] The lock body drives the anti-lock seat to rotate synchronously through the clamping block and the clamping groove.

[0018] Further preferably: the depth of the C-shaped ball groove is less than the depth of the two concave areas of the S-shaped protrusion;

[0019] In the initial state under the action of the return spring, the ball is in the concave area of the S-shaped protrusion, and the outer surface of the ball shrinks in the circular through hole. At this time, the ring protrusion can rotate within the convex ring;

[0020] When the outer door handle is lifted, it drives the lock core to move, and the ball enters the C-shaped ball groove. The outer surface of the ball passes through the circular through hole and abuts in the semi-circular avoidance groove. At this time, the ring protrusion and the convex ring are limited.

[0021] Further preferably: the depth of the two concave areas of the S-shaped protrusion is greater than the radius of the ball and less than the diameter of the ball;

[0022] The depth of the C-shaped ball groove is less than the radius of the ball.

[0023] Further preferably: the diameter of the ball is matched with the diameter of the circular through hole.

[0024] Further preferably: the square shaft passes through the mounting seat and is connected to the end face of the anti-lock seat.

[0025] The utility model has positive effects: the structure of the utility model is reasonably arranged, and it has a ball anti-lock structure between the lock body and the square shaft; the ball anti-lock structure includes a mounting seat, an anti-lock seat, a lock core and two balls; and a middle part of an end face of the lock core is integrally formed with an S-shaped protrusion, and C-shaped ball grooves are arranged on outer surfaces of two arches of the S-shaped protrusion. During use, the balls can be transposed within two concave areas of the S-shaped protrusion and within the C-shaped ball grooves. In an initial state, the two balls are located within the two concave areas of the S-shaped protrusion. At this time, the balls are contracted within a circular through hole, and at this time, the balls do not enter a semi-circular avoidance groove, that is, at this time, the anti-lock seat can rotate normally within the mounting seat, that is, normal unlocking operation can be achieved. When an outer door handle is lifted, the balls enter the C-shaped ball grooves. At this time, an outer part of the balls penetrates through the circular through hole and is clamped within the semi-circular avoidance groove, so that the anti-lock seat and the mounting seat are limited to achieve anti-lock. At this time, the outer door handle cannot be rotated to unlock. The operation is convenient, and anti-lock or unlocking operation can be quickly achieved, which is beneficial to improving the use safety and reliability, and has strong applicability and good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the utility model be more clearly understood, the following further details the utility model according to specific embodiments in conjunction with the drawings, wherein:

[0027] Figure 1 is a structural schematic diagram of the utility model;

[0028] Figure 2 is a split structural schematic diagram of the utility model;

[0029] Figure 3 is a structural schematic diagram of another perspective when the utility model is split;

[0030] Figure 4 is a structural schematic diagram when the anti-lock seat, the lock core and the balls in the utility model are combined;

[0031] Figure 5 is Figure 4 a structural schematic diagram when the anti-lock seat is removed in;

[0032] Figure 6 is an enlarged structural schematic diagram of the lock core and the balls in the utility model.

[0033] Reference numerals: inner door handle 1, outer door handle 2, square shaft 3, ball anti-lock structure 4, mounting seat 41, anti-lock seat 42, lock core 43, ball 44, convex ring 5, semi-circular avoidance groove 6, circular ring protrusion 7, circular through hole 8, S-shaped protrusion 9, C-shaped ball groove 10, return spring 11, convex block 12, convex strip 13, pressing and bending part 14, clamping groove 15, clamping block 16, lock body 17. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] Embodiment

[0036] See Figures 1 to 6 As shown, a ball anti-lock type lock structure includes an inner door handle 1, an outer door handle 2, and a square shaft 3. A lock body 17 and a ball anti-lock structure 4 disposed between the lock body and the square shaft are provided inside the outer door handle. In this embodiment, the inner door handle, the outer door handle, and the square shaft are all conventional structures of the prior art, so they are not described in detail. A keyhole is provided on the outer door handle.

[0037] In the actual application process, the ball anti-lock structure includes a mounting seat 41, an anti-lock seat 42, a lock core 43, and two balls 44. In this embodiment, the balls are metal structures, specifically stainless steel structures. In this embodiment, a convex ring 5 is provided on the side surface of the mounting seat, and semi-circular avoidance grooves 6 are provided on the symmetric inner walls of the convex ring. A circular ring protrusion 7 is provided on the side surface of the anti-lock seat, and circular through holes 8 are provided on the symmetric side walls of the circular ring protrusion. At the same time, an S-shaped protrusion 9 is integrally formed in the middle of the end face of the lock core, and C-shaped ball grooves 10 are provided on the outer surfaces of the two arches of the S-shaped protrusion. During use, the two balls are symmetrically arranged in the recessed area of the S-shaped protrusion and can rotate into the C-shaped ball grooves. During the assembly process, the lock core is connected to the lock body and extends into the circular ring protrusion, the circular ring protrusion is inserted into the convex ring, and the outer surfaces of the balls are positioned against the semi-circular avoidance grooves after passing through the circular through holes. Through the above structure, by changing the positions of the balls on the S-shaped protrusion, the lock body can drive the anti-lock seat to rotate or anti-lock and position in the convex ring, which is beneficial to improving the use safety and reliability.

[0038] During the actual application process, a return spring 11 is sleeved on the outer surface of the circular ring protrusion; convex blocks 12 are arranged on the symmetric outer walls of the convex ring, and two convex strips 13 are fixed on the side surface of the anti-lock seat; moreover, pressing bending parts 14 are integrally formed at both ends of the return spring. During assembly, the pressing bending parts respectively abut against the side surfaces of the convex blocks and the convex strips for positioning; the rotation of the lock body drives the anti-lock seat to rotate, and the convex strip drives the return spring to be compressed and store energy. Under the action of the return spring, the circular through hole can be in the position of the semi-circular avoidance groove, that is, whether it is anti-locked or not, in the initial state, the position of the ball is matched with the position of the semi-circular avoidance groove. When the ball is in the S-shaped protrusion depression area, the outer end of the ball will not be stuck in the semi-circular avoidance groove. When the ball is in the C-shaped ball groove, the outer end of the ball passes through the circular through hole and is stuck in the semi-circular avoidance groove. At this time, due to the existence of the ball, the anti-lock seat cannot rotate in the mounting seat, realizing the anti-lock operation.

[0039] During the actual application process, a clamping groove 15 is arranged on the inner wall of the anti-lock seat; a clamping block 16 is arranged on the outer wall of the lock body; during assembly, the lock body is inserted into the anti-lock seat, and the clamping block is stuck in the clamping groove; the lock body drives the anti-lock seat to rotate synchronously through the clamping block and the clamping groove. Through the above structure, the lock body can drive the anti-lock seat to rotate synchronously.

[0040] During the actual application process, the depth of the C-shaped ball groove is less than the depths of the two depression areas of the S-shaped protrusion; in the initial state under the action of the return spring, the ball is in the depression area of the S-shaped protrusion, and the outer surface of the ball shrinks in the circular through hole. At this time, the circular ring protrusion can rotate in the convex ring; when the outer door handle is lifted, the lock core moves, and the ball enters the C-shaped ball groove. The outer surface of the ball passes through the circular through hole and abuts against the semi-circular avoidance groove. At this time, the circular ring protrusion is limited with the convex ring. Specifically, the depths of the two depression areas of the S-shaped protrusion are greater than the radius of the ball and less than the diameter of the ball; the depth of the C-shaped ball groove is less than the radius of the ball. The diameter of the ball is matched with the diameter of the circular through hole.

[0041] The utility model has positive effects: the structure of the utility model is reasonably arranged, and it has a ball anti-lock structure between the lock body and the square shaft; the ball anti-lock structure includes a mounting seat, an anti-lock seat, a lock core and two balls; and a C-shaped projection is integrally formed in the middle of the end face of the lock core, and C-shaped ball grooves are arranged on the outer surfaces of the two arches of the C-shaped projection. When in use, the balls can be displaced in the two concave areas of the C-shaped projection and the C-shaped ball grooves. In the initial state, the two balls are in the two concave areas of the C-shaped projection. At this time, the balls are contracted in the circular through holes, and at this time, the balls do not enter the semi-circular avoidance grooves. That is, at this time, the anti-lock seat can rotate normally in the mounting seat, that is, normal unlocking operation can be realized. When the outer door handle is lifted, the balls enter the C-shaped ball grooves. At this time, the outside of the balls passes through the circular through holes and is stuck in the semi-circular avoidance grooves, so that the anti-lock seat and the mounting seat are limited to achieve anti-lock. At this time, the outer door handle cannot be rotated to unlock. Its operation is convenient, and the anti-lock or unlocking operation can be quickly realized, which is beneficial to improving the use safety and reliability, and has strong applicability and good practicability.

[0042] In this embodiment, the standard parts used can be directly purchased from the market. For the non-standard structural components described in the specification, they can also be directly processed according to the existing technical common sense without any doubt. At the same time, the connection methods of each component adopt the mature conventional means in the prior art, and the machines, parts and equipment all adopt the conventional models in the prior art, so no specific description will be made here.

[0043] Obviously, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. And these obvious changes or modifications derived from the essential spirit of the present utility model still belong to the protection scope of the present utility model.

Claims

1. A ball anti-lock type lock structure, including an inner door handle, an outer door handle and a square shaft, characterized in that: A lock body is arranged inside the outer door handle, and a ball anti-lock structure is arranged between the lock body and the square shaft; The ball anti-lock structure includes a mounting seat, an anti-lock seat, a lock core and two balls; A convex ring is arranged on the side surface of the mounting seat, and semi-circular avoidance grooves are arranged on the symmetric inner walls of the convex ring; A circular ring protrusion is arranged on the side surface of the anti-lock seat, and circular through holes are arranged on the symmetric side walls of the circular ring protrusion; An S-shaped protrusion is integrally formed in the middle of the end surface of the lock core, C-shaped ball grooves are arranged on the outer surfaces of the two arches of the S-shaped protrusion, and the two balls are symmetrically arranged in the recessed area of the S-shaped protrusion and can rotate into the C-shaped ball grooves; The lock core is connected to the lock body and extends into the circular ring protrusion, the circular ring protrusion is inserted into the convex ring, and the outer surface of the ball abuts against the semi-circular avoidance groove after passing through the circular through hole.

2. The structure of a ball anti-lock type lock according to claim 1, characterized in that: A return spring is sleeved on the outer surface of the circular ring protrusion; Convex blocks are arranged on the symmetric outer walls of the convex ring, and two convex strips are fixed on the side surface of the anti-lock seat; Pressing bending parts are integrally formed at both ends of the return spring, and the pressing bending parts respectively abut against the side surfaces of the convex blocks and the convex strips for positioning; The rotation of the lock body drives the anti-lock seat to rotate, and the convex strip drives the return spring to be compressed and store energy.

3. A ball anti - locking type lock structure according to claim 2, wherein: A clamping groove is arranged on the inner wall of the anti-lock seat; A clamping block is arranged on the outer wall of the lock body; The lock body is inserted into the anti-lock seat, and the clamping block is clamped into the clamping groove; The lock body drives the anti-lock seat to rotate synchronously through the clamping block and the clamping groove.

4. A ball anti-lock type lock structure according to claim 3, characterized in that: The depth of the C-shaped ball groove is less than the depth of the two recessed areas of the S-shaped protrusion; In the initial state under the action of the return spring, the ball is in the recessed area of the S-shaped protrusion, and the outer surface of the ball shrinks in the circular through hole. At this time, the circular ring protrusion can rotate in the convex ring; Lifting the outer door handle drives the lock core to move, the ball enters the C-shaped ball groove, the outer surface of the ball passes through the circular through hole and abuts against the semi-circular avoidance groove. At this time, the circular ring protrusion and the convex ring are limited.

5. The structure of a ball anti-lock type lock according to claim 4, wherein: The depth of the two recessed areas of the S-shaped protrusion is greater than the radius of the ball and less than the diameter of the ball; The depth of the C-shaped ball groove is less than the radius of the ball.

6. A ball anti-lock type lock structure according to claim 1, characterized in that: The diameter of the ball is matched with the diameter of the circular through hole.

7. A ball anti-lock type lock structure according to claim 1, characterized in that: The square shaft passes through the mounting seat and is connected to the end surface of the anti-lock seat.

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