Square shaft child lock

Abstract

The utility model discloses a square shaft child lock which comprises a lock body, a shaft body open groove is formed in the middle of the lock body, a connecting middle shaft is connected in the shaft body open groove, a middle shaft connecting part is arranged at one end of the connecting middle shaft, ball grooves are symmetrically formed in the edge of the lower side of the middle shaft connecting part in a concave mode, and locking balls are arranged in the ball grooves. A decorative cover plate is arranged on the surface of the lock body, a connecting opening is formed in the middle of the decorative cover plate, locking concave positions are symmetrically and concavely arranged on the edge of the lower side of the connecting opening, and one side of each locking ball is clamped in the corresponding locking concave position to be locked and connected. According to the square shaft child lock, through the combination of the locking ball and the locking concave position, it is ensured that a reliable locking function can be provided in normal use, only the rotating cover plate needs to be rotated by 180 degrees during unlocking, the rotating action of locking and unlocking is simple and direct, and operation is easy to understand and safe.

Description

Technical Field

[0001] This utility model belongs to the field of door lock technology, specifically relating to a square-axis child lock. Background Technology

[0002] With the increasing demand for home safety, child safety has become an important and unavoidable issue in modern families. Especially in the field of door locks, many traditional designs fail to adequately consider children's operational abilities, making it easy for children to accidentally open the locks and create safety hazards. Therefore, designing a door lock that effectively prevents accidental operation by children while ensuring ease of use for adults has become an urgent problem to be solved.

[0003] There are many types of child locks on the market, but most share some common problems, such as complex operation, inconvenient unlocking, and difficult installation. This is especially true for square-axis child locks, where traditional rotating or pulling locks are often ineffective in preventing accidental operation due to children's curiosity and exploratory nature. Furthermore, while some existing child locks have reliable locking functions, their unlocking methods are usually cumbersome, requiring special tools or considerable force, which can be inconvenient for adults in daily use.

[0004] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content

[0005] In view of the technical problems mentioned in the background art, the purpose of this utility model is to provide a square shaft child lock that ensures reliable locking function during normal use by combining locking ball and locking recess. Unlocking only requires rotating the decorative cover 180 degrees. The locking and unlocking rotation actions are simple and direct, easy to understand and safe to operate, thus solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a square-axis child lock, comprising a lock body, a shaft groove in the middle of the lock body, a connecting central shaft connected in the shaft groove, a central shaft connecting part at one end of the connecting central shaft, ball grooves symmetrically recessed on the lower edge of the central shaft connecting part, a locking ball in the ball groove, a decorative cover plate on the surface of the lock body, a connecting opening in the middle of the decorative cover plate, a locking recess symmetrically recessed on the lower edge of the connecting opening, and one side of the locking ball engaging in the locking recess for locking connection.

[0007] Furthermore, a positioning sleeve is fitted onto the outer side of the central shaft connection, and ball positioning grooves are symmetrically opened on the lower edge of the positioning sleeve. The locking ball is disposed in the ball groove and the ball positioning groove.

[0008] Furthermore, the inner edge of the slotted shaft is uniformly recessed with several connecting slots, and one end of the positioning bushing is uniformly protruded with several connecting blocks, with each of the connecting blocks and the connecting slots corresponding to each other.

[0009] Furthermore, a gear sleeve is embedded in the inner side of the groove of the shaft body, and positioning connecting grooves are recessed on both sides of the groove of the shaft body. Spring connecting parts are provided on both sides of the gear sleeve, and the spring connecting parts are respectively embedded in the positioning connecting grooves. A spring connecting groove is recessed in the spring connecting part, and a return spring is connected in the spring connecting groove. A positioning ball is provided at the front end of the return spring, and a ball opening is opened at the front of the spring connecting groove. One side of the positioning ball protrudes through the ball opening.

[0010] Furthermore, the other end of the connecting shaft is provided with a movable gear, which is set in the gear sleeve. The outer edge of the movable gear is uniformly recessed with a number of positioning grooves that are adapted to the positioning ball, and the positioning ball is positioned and connected with the positioning groove.

[0011] Furthermore, a lock handle is connected to one side of the lock body, and a connecting groove is recessed at the upper end of the lock handle. The size of the connecting groove is larger than the size of the central shaft connecting part, and the central shaft connecting part is connected in the connecting groove.

[0012] The present invention has the following advantages: A shaft groove is provided in the middle of the lock body, and a connecting central shaft is connected in the shaft groove. One end of the connecting central shaft is provided with a central shaft connecting part. A ball bearing groove is symmetrically recessed on the lower edge of the central shaft connecting part, and a locking ball is provided in the ball bearing groove. A decorative cover plate is provided on the surface of the lock body, and a connecting opening is provided in the middle of the decorative cover plate. A locking recess adapted to the locking ball is symmetrically recessed on the lower edge of the connecting opening. One side of the locking ball is engaged in the locking recess for locking connection. The square shaft child lock of the present invention, through the combination of the locking ball and the locking recess, ensures reliable locking function during normal use. Unlocking only requires a 180-degree rotation of the decorative cover plate. The locking and unlocking rotation actions are simple and direct, easy to understand, and safe to operate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the locking ball and locking recess locking structure of this utility model.

[0016] Figure 4This is an exploded structural diagram of the lock body, gear sleeve, and connecting shaft of this utility model.

[0017] Reference numerals: Lock body 10; Shaft slot 11; Connecting central shaft 20; Central shaft connecting part 21; Positioning bushing 30; Ball groove 211; Locking ball 40; Ball positioning groove 31; Decorative cover plate 50; Connecting opening 51; Locking recess 511; Connecting slot 111; Connecting block 32; Gear rubber sleeve 60; Positioning connecting groove 112; Spring connecting part 61; Spring connecting groove 611; Return spring 62; Positioning ball 63; Ball opening 612; Movable gear 22; Positioning slot 221; Lock handle 70; Connecting groove 71. Detailed Implementation

[0018] like Figures 1 to 4 As shown, a square-axis child lock includes a lock body 10. A shaft slot 11 is formed in the middle of the lock body 10, and a connecting central shaft 20 is connected to the shaft slot 11. One end of the connecting central shaft 20 has a central shaft connecting portion 21. A positioning sleeve 30 is sleeved on the outer side of the central shaft connecting portion 21. A ball bearing groove 211 is symmetrically recessed on the lower edge of the central shaft connecting portion 21, and a locking ball 40 is provided in the ball bearing groove 211. A ball bearing positioning groove 31 is symmetrically formed on the lower edge of the positioning sleeve 30. The locking ball 40 is disposed in the ball bearing groove 211 and the ball bearing positioning groove 31. In groove 31, the surface of the lock body 10 is provided with a decorative cover plate 50. A connecting opening 51 is provided in the center of the decorative cover plate 50. A locking recess 511, adapted to the locking ball 40, is symmetrically recessed on the lower edge of the connecting opening 51. One side of the locking ball 40 engages in the locking recess 511 for locking connection. When unlocking is required, the decorative cover plate 50 is rotated 180 degrees, causing the locking ball 40 to separate from the locking recess 511 and retract into the ball groove 211 and the ball positioning groove 31. At this time, the connecting shaft 20 is unlocked and can rotate freely. When the decorative cover plate 50 is rotated 180 degrees in the opposite direction, one side of the locking ball 40 protrudes from the ball groove 211 and the ball positioning groove 31 and aligns with the locking recess 511. At this time, the locking ball 40 is engaged in the locking recess 511, thereby locking the connecting shaft 20 and preventing rotation, thus realizing the function of a child lock. The lock's design, through the combination of the locking ball 40 and the locking recess 511, ensures reliable locking functionality during normal use. Unlocking requires only a 180-degree rotation of the decorative cover 50, which increases the difficulty of operation for children and avoids accidental operation. The locking and unlocking rotation actions are simple and direct, easy to understand, and safe to operate.

[0019] In practical implementation, the inner edge of the slot 11 of the shaft body is uniformly recessed with a plurality of connecting slots 111, and one end of the positioning bushing 30 is uniformly protruded with a plurality of connecting blocks 32. The plurality of connecting blocks 32 and the plurality of connecting slots 111 correspond one-to-one. When the positioning bushing 30 is fitted onto the outside of the central shaft connecting part 21, the plurality of connecting blocks 32 and the plurality of connecting slots 111 are connected one-to-one, thereby allowing the positioning bushing 30 to be fitted onto the outside of the central shaft connecting part 21. The structure is simple and the assembly is convenient.

[0020] In practical implementation, a gear sleeve 60 is embedded in the inner side of the slot 11 of the shaft body. Positioning connecting grooves 112 are recessed on both sides of the slot 11 of the shaft body. Spring connecting portions 61 are provided on both sides of the gear sleeve 60. The two spring connecting portions 61 are respectively embedded in the two positioning connecting grooves 112. A spring connecting groove 611 is recessed in each spring connecting portion 61. A return spring 62 is connected in the spring connecting groove 611. A positioning ball 63 is provided at the front end of the return spring 62. A ball opening 612 is provided at the front of the spring connecting groove 611. One side of the positioning ball 63 is open to… The ball bearing protrudes through the opening 612, and the other end of the connecting shaft 20 is provided with a movable gear 22. The movable gear 22 is disposed in the gear sleeve 60. The outer edge of the movable gear 22 is evenly recessed with a plurality of positioning grooves 221 that are adapted to the positioning ball 63. The positioning ball 63 is positioned and connected to the positioning grooves 221. When the connecting shaft 20 rotates, the movable gear 22 can rotate in the gear sleeve 60. At this time, the positioning ball 63 moves along the plurality of positioning grooves 221, thereby enabling the connecting shaft 20 to be positioned and rotated, which is convenient for user use.

[0021] In practical implementation, a lock handle 70 is connected to one side of the lock body 10. The upper end of the lock handle 70 is recessed with a connecting groove 71. The size of the connecting groove 71 is larger than the size of the central shaft connecting part 21. The central shaft connecting part 21 is connected in the connecting groove 71. In use, the user can easily achieve locking and unlocking operations by rotating the lock handle 70. The rotation of the lock handle 70 drives the connecting central shaft 20, thereby controlling the locking or unlocking state of the lock.

[0022] In summary, the lock body 10 has a shaft slot 11 in the middle, through which a connecting central shaft 20 is connected. One end of the connecting central shaft 20 has a central shaft connecting part 21, and the lower edge of the central shaft connecting part 21 has symmetrically recessed ball grooves 211. A locking ball 40 is provided in the ball grooves 211. The surface of the lock body 10 has a decorative cover plate 50, with a connecting opening 51 in the middle. The lower edge of the connecting opening 51 has symmetrically recessed locking recesses 511 that are adapted to the locking ball 40. One side of the locking ball 40 is engaged in the locking recesses 511 for locking connection. The square shaft child lock of this utility model ensures reliable locking function during normal use through the combination of locking balls and locking recesses. Unlocking only requires rotating the decorative cover plate 180 degrees. The rotation action for locking and unlocking is simple and direct, easy to understand and safe to operate.

Claims

1. A square shaft child lock characterized by, It includes a lock body (10), a shaft slot (11) is provided in the middle of the lock body (10), a connecting shaft (20) is connected in the shaft slot (11), a shaft connecting part (21) is provided at one end of the connecting shaft (20), a ball groove (211) is symmetrically recessed on the lower edge of the shaft connecting part (211), a locking ball (40) is provided in the ball groove (211), a decorative cover plate (50) is provided on the surface of the lock body (10), a connecting opening (51) is provided in the middle of the decorative cover plate (50), a locking recess (511) is symmetrically recessed on the lower edge of the connecting opening (51), and one side of the locking ball (40) is engaged in the locking recess (511) for locking connection.

2. The square shaft child lock according to claim 1, characterized in that, The outer side of the central shaft connecting part (21) is fitted with a positioning bushing (30), and the lower edge of the positioning bushing (30) is symmetrically provided with ball positioning grooves (31). The locking ball (40) is disposed in the ball groove (211) and the ball positioning groove (31).

3. The square shaft child lock according to claim 2, wherein The inner edge of the slot (11) of the shaft body is uniformly recessed with a number of connecting slots (111), and one end of the positioning bushing (30) is uniformly protruded with a number of connecting blocks (32). The number of connecting blocks (32) and the number of connecting slots (111) are connected one-to-one.

4. The square-axis child lock according to claim 1, characterized in that, The inner side of the groove (11) of the shaft body is fitted with a gear sleeve (60). The two sides of the groove (11) of the shaft body are respectively provided with positioning connection grooves (112). The two sides of the gear sleeve (60) are respectively provided with spring connection parts (61). The spring connection parts (61) are respectively embedded in the positioning connection grooves (112). The spring connection parts (61) are respectively provided with spring connection grooves (611). The spring connection grooves (611) are connected with return springs (62). The front end of the return spring (62) is provided with positioning ball (63). The front part of the spring connection groove (611) is provided with ball opening (612). One side of the positioning ball (63) protrudes through the ball opening (612).

5. The square shaft child lock according to claim 4, wherein The other end of the connecting shaft (20) is provided with a movable gear (22), which is located in the gear sleeve (60). The outer edge of the movable gear (22) is uniformly recessed with a number of positioning grooves (221) that are adapted to the positioning ball (63). The positioning ball (63) and the positioning groove (221) are positioned and connected.

6. The square shaft child lock of claim 1, wherein The lock body (10) is connected to a lock handle (70) on one side. The upper end of the lock handle (70) is recessed with a connecting groove (71). The size of the connecting groove (71) is larger than the size of the central shaft connecting part (21). The central shaft connecting part (21) is connected in the connecting groove (71).

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