Door lock with lock cylinder protection

Abstract

The utility model discloses a door lock with lock cylinder protection structure, include: mounting panel, the mounting panel longitudinal setting is on the outer surface of door board, lock cylinder, protective sleeve, the protective sleeve is equipped with the outer periphery of lock cylinder, lock cylinder and protective sleeve transversely pass mounting panel lower part, protection piece, protection piece sets up between mounting panel and protective sleeve, and protection piece is used for giving protective sleeve and lock cylinder provides the positioning effect. The utility model discloses the outer periphery of lock cylinder is provided with the protective sleeve, can protect lock cylinder, improve the protection performance, and the overall strength of lock cylinder is high. The outer periphery of lock cylinder and protective sleeve is provided with protection piece and carries out secondary protection positioning, can prevent lock cylinder from rotating and slightly swinging, and rotates not to the position, strengthens the protection, and the buffer external impact force.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, and mainly to a door lock with a lock cylinder protection structure. Background Technology

[0002] Existing door locks are made of zinc alloy or aluminum alloy, which are expensive, have poor fire resistance, and low security. The outer parts of the lock cylinder are not positioned, which can cause the lock cylinder to rotate unstably and deviate after being unlocked for a long time, or cause resistance when the lock cylinder returns to the center.

[0003] Most ordinary door locks on the market currently use a lever as the locking mechanism to control the locking and unlocking of the door. The lever is located inside the lock cylinder, with one end coaxially connected to the lock cylinder for external locking and unlocking, and the other end connected to a knob for internal locking and unlocking. While the lever is convenient for manipulating the bolt and operates quickly and sensitively, it can become slightly bent or warped after prolonged use, causing the force required to operate it to be off-center, sometimes making it difficult to open the door. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a door lock with a protective sleeve that can protect the lock cylinder and improve its protective performance; the protective component provides secondary protection and positioning to prevent slight swaying or incomplete rotation of the lock cylinder during rotation, thus strengthening protection, buffering external impact forces, and providing high overall strength of the lock cylinder.

[0005] The technical problem to be solved by this utility model can be achieved by the following technical solution: A door lock with a lock cylinder protection structure, characterized in that it includes: Mounting plate, wherein the mounting plate is longitudinally disposed on the outer surface of the door panel; A lock cylinder and a protective sleeve, wherein the protective sleeve is fitted around the outer periphery of the lock cylinder, and the lock cylinder and the protective sleeve pass laterally through the lower part of the mounting plate; A protective component is disposed between the mounting plate and the protective sleeve, and the protective component is used to provide positioning for the protective sleeve and the lock cylinder.

[0006] In a preferred embodiment of this utility model, the protective sleeve is an iron collar with a Q-shaped longitudinal section; the protective component includes a protective plate, a lock cylinder housing, and a protective cover; the protective plate is arranged parallel to the inner side of the mounting plate, and the protective cover is arranged laterally on the lower front side of the protective plate; the lock cylinder housing consists of a plurality of cylindrical locking pins, which are axially arranged inside the protective cover, and the inner sides of the locking pins abut against the outer periphery of the protective sleeve.

[0007] In a preferred embodiment of the present invention, the door lock further includes a housing and a positioning cover. The housing is arranged parallel to the front side of the mounting plate, and the housing, mounting plate, and protective plate are fixed together by a plurality of mounting posts. The positioning cover is sleeved on the outer ring surface of the inner end of the lock cylinder, and the positioning cover is located at the inner end of the protective cover.

[0008] In a preferred embodiment of this utility model, the door lock further includes a filler, which includes a circuit board, a programming port, and a pair of filler guides. The circuit board is arranged parallel to the outer shell and the mounting plate, and is located above the protective cover. The programming port is arranged vertically on the inner surface of the circuit board and passes through the mounting plate and the protective plate in sequence. The pair of filler guides are arranged vertically on the upper front side of the mounting plate, and the outer periphery of the circuit board is engaged between the pair of filler guides.

[0009] In a preferred embodiment of this utility model, the door lock further includes a keyhole, a lock cylinder tail rod, a cam, a lever sleeve, and a bolt. The keyhole is inserted into the interior of the lock cylinder from the outside in. The lock cylinder tail rod is coaxially fixed on the inner side of the lock cylinder. The lever sleeve is coaxially fixed on the inner side of the bolt and is sleeved on the outer periphery of the cam. The middle part of the lock cylinder tail rod is inserted into the central hole of the cam. The cam and the lever sleeve are hinged together with the lock cylinder tail rod as the center.

[0010] In a preferred embodiment of this utility model, a main actuation groove is longitudinally provided inside the lever sleeve, and the cross-section of the main actuation groove is U-shaped; a main lever is radially provided on the outer ring surface of the lever, and the main lever is inclined upward along the direction of the latch; the main lever abuts against the inner end face of the latch; A secondary actuation groove is transversely provided through the lower middle part of the lever sleeve, and the longitudinal section of the secondary actuation groove is U-shaped; a secondary actuation block is radially provided on the outer ring surface of the lever, and the secondary actuation block is provided in the opposite direction to the main lever; the upper side of the secondary actuation block abuts against the secondary actuation groove.

[0011] In a preferred embodiment of the present invention, the door lock further includes an inner shell, an inner fixing member, and a knob. The inner fixing member is disposed on the inner side of the door panel, and the outer shell is disposed on the outer periphery of the inner fixing member and located on the inner surface of the door panel. The knob is rotatably disposed on the inner fixing member, and the inner end of the lock cylinder tail rod is inserted and fixedly disposed inside the knob.

[0012] The beneficial effects of this utility model are: a door lock with a lock cylinder protection structure, wherein a protective sleeve is provided on the outer periphery of the lock cylinder, which can protect the lock cylinder, improve the protective performance, and increase the overall strength of the lock cylinder. The outer periphery of the lock cylinder and the protective sleeve are provided with protective components for secondary protection and positioning, which can prevent the lock cylinder and the protective sleeve from slightly swinging or failing to rotate to the correct position when the lock is turned to open the door; it can also strengthen protection and buffer external impact forces. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the front panel and lock cylinder of the door lock of this utility model.

[0014] Figure 2 This is a structural schematic diagram of the front panel and lock cylinder of the door lock of this utility model.

[0015] Figure 3 This is a schematic diagram of a door lock with a lock cylinder protection structure according to this utility model.

[0016] Figure 4 This is a schematic diagram of the connection of the peach-picking mechanism of this utility model.

[0017] Icon labels: 60. Mounting plate; 61. Protective cover; 62. Protective plate; 63. Lock cylinder housing; 64. Protective cover.

[0018] 71. Outer casing; 72. Mounting post; 73. Positioning cover; 74. Circuit board; 75. Programming port; 76. Filler strip.

[0019] 11. Keyhole; 12. Lock cylinder; 14. Lock cylinder tail rod; 22. Knob; 24. Inner shell.

[0020] 31. Lock tongue; 32. Lock tongue cylinder; 33. Lock body decorative plate; 41. Lever sleeve; 42. Main actuation groove; 43. Secondary actuation groove; 52. Main lever; 53. Secondary lever block; 54. Spring. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0022] See Figures 1 to 2 The figure shows a door lock with a lock cylinder protection structure, including: a mounting plate 60, which is longitudinally disposed on the outer surface of the door panel; a lock cylinder 12 and a protective sleeve 61, which is sleeved on the outer periphery of the lock cylinder 12 and passes laterally through the lower part of the mounting plate 60; and a protective member, which is disposed between the mounting plate 60 and the protective sleeve 61 and is used to provide positioning for the protective sleeve 61 and the lock cylinder 12.

[0023] The lock cylinder of this utility model is provided with a protective sleeve 61 on its outer periphery, which can protect the lock cylinder, improve its protective performance, and increase the overall strength of the lock cylinder. The lock cylinder and the protective sleeve 61 are provided with protective components on their outer periphery for secondary protection and positioning. This can prevent the lock cylinder and the protective sleeve 61 from slightly swinging or not rotating to the correct position when the lock is turned to open the door; it can also enhance protection, buffer external impact forces, and improve fire resistance by utilizing the high melting point of steel.

[0024] In this preferred embodiment, the protective sleeve 61 is an iron collar with a Q-shaped longitudinal section; the protective component includes a protective plate 62, a lock cylinder housing 63, and a protective cover 64. The protective plate 62 is arranged parallel to the inner side of the mounting plate 60, and the protective cover 64 is arranged laterally on the lower front side of the protective plate 62; the lock cylinder housing 63 consists of several cylindrical locking pins, which are axially arranged inside the protective cover 64, and the inner sides of the locking pins abut against the outer periphery of the protective sleeve 61.

[0025] The outer periphery of the lock cylinder 12 is provided with a protective iron collar, which protects the lock cylinder 12, improves its protective performance, fire resistance, and provides high security. The lock cylinder housing 63 abuts and positions the outer periphery of the protective sleeve 61, preventing the protective sleeve 61 from being slightly moved when the lock cylinder rotates after long-term use; the protective sleeve 61 is positioned correctly, facilitating the lock cylinder to return to its original position without generating resistance.

[0026] In this preferred embodiment, the door lock further includes a housing 71 and a positioning cover 73. The housing 71 is arranged parallel to the front side of the mounting plate 60, and the housing 71, mounting plate 60, and protective plate 62 are fixed together by a plurality of mounting posts 72. The positioning cover 73 is sleeved on the outer annular surface of the inner end of the lock cylinder, and the positioning cover 73 is located at the inner end of the protective sleeve 61. The positioning cover 73 provides a positioning function for the inner end face of the protective sleeve 61, preventing slight axial displacement.

[0027] In this preferred embodiment, the door lock further includes a filler, which comprises a circuit board 74, a programming port 75, and a pair of filler guides 76. The circuit board 74 is arranged parallel to the outer casing 71 and the mounting plate 60, and is located above the protective cover 64. The programming port 75 is vertically disposed on the inner surface of the circuit board 74, and passes through the mounting plate 60 and the protective plate 62 in sequence. The pair of filler guides 76 are vertically disposed on the upper front side of the mounting plate 60, and the outer periphery of the circuit board 74 is engaged between the pair of filler guides 76. The filler is configured with a thickness that matches the protective cover 61 and the protective component, improving the overall installation stability and unlocking stability of the door lock.

[0028] In this preferred embodiment, combined with Figure 3 and Figure 4 The door lock also includes a keyhole 11, a lock cylinder tail rod, a mortise, a lever sleeve, and a bolt. The keyhole 11 is inserted into the interior of the lock cylinder from the outside to the inside. The lock cylinder tail rod is coaxially fixed inside the lock cylinder. The lever sleeve is coaxially fixed inside the bolt and is fitted around the mortise. The middle part of the lock cylinder tail rod is inserted into the center hole of the mortise. The mortise and the lever sleeve are hinged together with the lock cylinder tail rod as the center.

[0029] The lock cylinder tail rod 14 inside the lock cylinder 12 is inserted into the center hole of the latch, and the lever sleeve 41 inside the bolt 31 is sleeved on the outer periphery of the latch. Rotating the key drives the lock cylinder 12 and the lock cylinder tail rod 14 to rotate, the lock cylinder tail rod 14 drives the latch to rotate, and the latch moves the bolt 31 to retract into the door panel. The lock cylinder 12, the latch, and the bolt 31 are linked for control, and the door lock can be opened or closed quickly. The outer periphery of the latch is protected by the lever sleeve 41, which can ensure smooth engagement and linkage between the latch and the bolt 31, and protect the latch from interference by other parts.

[0030] Furthermore, a main actuation groove is longitudinally provided through the interior of the lever sleeve, and the cross-section of the main actuation groove is U-shaped; a main lever is radially provided on the outer ring surface of the latch, and the main lever is inclined upward along the direction of the latch; the main lever abuts against the inner end face of the latch; a secondary actuation groove is transversely provided through the middle of the lower end of the lever sleeve, and the longitudinal section of the secondary actuation groove is U-shaped; a secondary lever block is radially provided on the outer ring surface of the latch, and the secondary lever block is provided in the opposite direction to the main lever; the upper side of the secondary lever block abuts against the secondary actuation groove.

[0031] The outer ring surface of the above-mentioned peach is radially provided with a main lever 52 and a secondary lever 53, which provide more power through dual-action and dual-force driving, and make the extension and retraction of the locking tongue 31 more agile.

[0032] In this preferred embodiment, the door lock further includes an inner shell, an inner fixing member, and a knob. The inner fixing member is disposed on the inner side of the door panel, and the outer shell 71 is disposed on the outer periphery of the inner fixing member and located on the inner surface of the door panel. The knob is rotatably disposed on the inner fixing member, and the inner end of the lock cylinder tail rod is inserted and fixedly disposed inside the knob.

[0033] The lock cylinder 12 can be opened from the outside using a key, while the door can be opened from the inside using a rotary knob 22, making it highly practical. Both the outer cover and inner shell 24 are made of plastic using IML technology, resulting in an attractive appearance and low price.

[0034] Specifically, a spring piece 54 is provided at the bottom of the main actuation groove 42 of the lever sleeve 41, and the two ends of the spring piece 54 are respectively snapped and fixed to the inner wall of the lever sleeve 41; the bottom end of the lever abuts against the middle of the upper surface of the spring piece 54.

[0035] Specifically, a tongue tube 32 is provided between the latch 31 and the lever sleeve 41, and a lock body decorative plate 33 and a rubber sleeve are arranged longitudinally at the connection between the tongue tube 32 and the latch 31.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A door lock with a lock cylinder protection structure, characterized in that, include: Mounting plate, wherein the mounting plate is longitudinally disposed on the outer surface of the door panel; A lock cylinder and a protective sleeve, wherein the protective sleeve is fitted around the outer periphery of the lock cylinder, and the lock cylinder and the protective sleeve pass laterally through the lower part of the mounting plate; A protective component is disposed between the mounting plate and the protective sleeve, and the protective component is used to provide positioning for the protective sleeve and the lock cylinder.

2. A door lock with a lock cylinder protection structure as described in claim 1, characterized in that, The protective sleeve is an iron collar with a Q-shaped longitudinal section. The protective component includes a protective plate, a lock cylinder housing, and a protective cover. The protective plate is arranged parallel to the inner side of the mounting plate, and the protective cover is arranged laterally on the lower front side of the protective plate. The lock cylinder housing consists of several cylindrical locking pins, which are axially arranged inside the protective cover, with their inner sides abutting against the outer periphery of the protective sleeve.

3. A door lock with a lock cylinder protection structure as described in claim 2, characterized in that, The door lock also includes a housing and a positioning cover. The housing is arranged parallel to the front side of the mounting plate. The housing, mounting plate, and protective plate are fixed together by a number of mounting posts. The positioning cover is sleeved on the outer ring surface of the inner end of the lock cylinder and is located at the inner end of the protective cover.

4. A door lock with a lock cylinder protection structure as described in claim 3, characterized in that, The door lock also includes a filler, which includes a circuit board, a programming port, and a pair of filler guides. The circuit board is arranged parallel to the outer shell and the mounting plate, and is located above the protective cover. The programming port is arranged vertically on the inner surface of the circuit board and passes through the mounting plate and the protective plate in sequence. The pair of filler guides are arranged vertically on the upper front side of the mounting plate, and the outer periphery of the circuit board is engaged between the pair of filler guides.

5. A door lock with a lock cylinder protection structure as described in claim 4, characterized in that, The door lock also includes a keyhole, a lock cylinder tail rod, a mortise, a lever sleeve, and a bolt. The keyhole is inserted into the interior of the lock cylinder from the outside in. The lock cylinder tail rod is coaxially fixed inside the lock cylinder. The lever sleeve is coaxially fixed inside the bolt and is fitted around the mortise. The middle part of the lock cylinder tail rod is inserted into the center hole of the mortise. The mortise and the lever sleeve are hinged together with the lock cylinder tail rod as the center.

6. A door lock with a lock cylinder protection structure as described in claim 5, characterized in that, The inside of the lever sleeve is longitudinally provided with a main actuation groove, and the cross-section of the main actuation groove is U-shaped; the outer ring surface of the lever is radially provided with a main lever, and the main lever is inclined upward along the direction of the latch; the main lever abuts against the inner end face of the latch; A secondary actuation groove is transversely provided through the lower middle part of the lever sleeve, and the longitudinal section of the secondary actuation groove is U-shaped; a secondary actuation block is radially provided on the outer ring surface of the lever, and the secondary actuation block is provided in the opposite direction to the main lever; the upper side of the secondary actuation block abuts against the secondary actuation groove.

7. A door lock with a lock cylinder protection structure as described in claim 6, characterized in that, The door lock also includes an inner shell, an inner fixing member, and a knob. The inner fixing member is located on the inner side of the door panel, and the outer shell is located on the outer periphery of the inner fixing member and on the inner surface of the door panel. The knob is rotatably mounted on the inner fixing member, and the inner end of the lock cylinder tail rod is inserted and fixed inside the knob.

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