Inclined spring bolt mechanism and door lock
By using the sliding component in the oblique locking tongue mechanism in conjunction with the limiting block, the problem of difficult door opening in existing door locks is solved, and a labor-saving door opening operation is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DESSMANN CHINA MACHINERY & ELECTRONICS
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-24
AI Technical Summary
Existing door locks require a handle to drive the oblique bolt through a large distance when opening the door, which is laborious.
A slanted latch mechanism was designed. By cooperating with the sliding member and the limiting block, the rotation of the slanted latch is restricted, reducing the need for the slanted latch to completely disengage from the lock hole when opening the door. It is only necessary to drive the sliding member to slide so that the limiting block and the limiting part are separated, thus shortening the stroke of the handle.
While ensuring normal door opening and closing, the handle's twisting stroke is reduced, making it more effortless and convenient.
Smart Images
Figure CN224161558U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of lock technology, specifically to a slanted locking tongue mechanism and a door lock. Background Technology
[0002] A door typically hinges to an adjacent door frame on one side, and connects to a lock on the adjacent door frame on the other side via a lock. The lock includes a slidable latch mechanism mounted on the lock housing. This latch is connected to a handle, allowing the handle to drive the latch to slide and retract into the lock housing. The latch has a straight surface and a beveled surface facing away from each other. When closing the door, the beveled surface of the latch abuts against the door frame, causing the latch to slide and retract into the lock housing, allowing the door to continue closing until it is completely closed. At this point, the lock housing is in the sliding direction of the latch, and the latch extends out and into the lock housing. If the door is opened directly at this point, the straight surface of the latch engages with the inner wall of the lock housing in the opening direction, preventing direct opening. The door can only be opened by driving the latch to slide and retract into the lock housing until it is completely disengaged from the lock housing.
[0003] For this reason, when opening the door, it is necessary to use the handle to drive the oblique bolt to slide a large distance so that the oblique bolt is completely away from the keyhole before the door lock can be opened, which is quite laborious.
[0004] Therefore, how to solve or improve the problem that existing door locks require a large stroke of the handle to drive the oblique bolt when opening the door, which is laborious, has become an important technical problem for those skilled in the art to solve. Utility Model Content
[0005] In view of this, this application provides a slanted latch mechanism and a door lock to solve or improve the problem that existing door locks require the use of a handle to drive the slanted latch to slide a large distance when opening the door, which is laborious.
[0006] In a first aspect, this application provides a slanted latch mechanism, including a lock housing, a latch rod, and a slanted latch. The lock housing is provided with a latch hole, and the slanted latch is slidably disposed in the latch hole. One end of the latch rod is connected to the slanted latch and slidably connected to the lock housing. The slanted latch is provided with a straight surface, an inclined surface, and a limiting part. The slanted latch is rotatably connected to one end of the latch rod and can be rotated until one of the straight surface and the inclined surface is parallel to the latch hole.
[0007] A sliding member is slidably mounted on the latch rod. The sliding member is connected to the door lock handle. A limit block is provided on the side of the sliding member near the oblique latch. The sliding member can slide so that the limit block abuts or separates from the limit part. When the limit block abuts with the limit part, the rotation of the oblique latch is restricted.
[0008] Optionally, a limiting groove is formed on the side of the oblique locking tongue near the sliding member, and the limiting part is the inner wall surface of the limiting groove;
[0009] When the slider slides close to the oblique locking tongue, the limiting block can be inserted into the limiting groove and abut against the inner wall of the limiting groove to restrict the rotation of the oblique locking tongue;
[0010] When the slider slides away from the oblique locking tongue, the limiting block can leave the limiting groove.
[0011] Optionally, the limiting block has a first surface and a second surface that are opposite to each other, and the locking tongue is rotatably connected to the lock housing and can rotate about its own axis;
[0012] When the slider slides close to the oblique locking tongue, the first surface can abut against the limiting part to restrict the oblique locking tongue from rotating relative to the locking tongue rod;
[0013] When the latch rod rotates 180° around its own axis, and the slider slides close to the oblique latch, the second surface can abut against the limiting part to restrict the rotation of the oblique latch.
[0014] Optionally, it also includes:
[0015] The first elastic element is used to connect the sliding member to the lock housing. Under the elastic force of the first elastic element, the sliding member tends to slide closer to the oblique locking tongue.
[0016] Optionally, it also includes:
[0017] A baffle is connected to the latch rod;
[0018] A paddle is rotatably connected to the lock housing. When the paddle is rotatably connected, it can be matched with or offset from the baffle in the sliding direction of the bolt.
[0019] The second elastic element connects the end of the latch rod away from the oblique latch to the lock housing. Under the elastic force of the second elastic element, the latch rod tends to slide out of the latch hole.
[0020] A first buffer is disposed on the side of the paddle near the baffle, and the paddle can abut against the baffle through the first buffer.
[0021] Optionally, it also includes:
[0022] The mounting plate is connected to the lock housing. The mounting plate is provided with a guide hole, through which the lock tongue rod can slide. The sliding member is connected to the mounting plate through a first elastic member. The sliding member is provided with an abutment part, and the mounting plate is matched with the abutment part in the sliding direction of the sliding member.
[0023] Optionally, it also includes:
[0024] The second buffer is provided on the side of the abutment portion near the mounting plate, and the mounting plate can abut against the abutment portion through the second buffer.
[0025] Optionally, it also includes:
[0026] The third buffer component includes a first folding plate and a second folding plate that are connected to each other. A first mounting groove is provided on the straight surface of the slanted locking tongue, and a second mounting groove is provided on the slanted surface of the slanted locking tongue. The first mounting groove and the second mounting groove are connected. The first folding plate is partially embedded in the first mounting groove, and the second folding plate is partially embedded in the second mounting groove.
[0027] Optionally, the first folding plate is provided with a first snap-fit part, and the bottom of the first mounting groove is provided with a first snap-fit groove, and the first snap-fit part snaps into the first snap-fit groove;
[0028] The second folding plate is provided with a second snap-fit part, and the bottom of the second mounting groove is provided with a second snap-fit groove, and the second snap-fit part snaps into the second snap-fit groove.
[0029] Secondly, this application also provides a door lock, including any of the oblique locking mechanisms described above.
[0030] This application provides a slanted latch mechanism. After the door is closed, the straight surface of the slanted latch is parallel to the latch hole, while the slanted surface is inclined relative to the extension direction of the latch hole. A limiting block abuts against a limiting part, and the slanted latch extends out of the latch hole. When opening the door, turning the door handle causes the sliding member to slide away from the slanted latch until the limiting block and the limiting part separate. Since the slanted latch can rotate at this time, when the door is opened, the straight surface of the slanted latch abuts against the inner wall of the latch hole, causing the slanted latch to rotate until its slanted surface is parallel to the latch hole, at which point the straight surface of the slanted latch is inclined relative to the latch hole. When the door continues to be opened, the straight surface of the slanted latch abuts against the inner wall of the latch hole, thereby pushing the slanted latch into the latch hole and out of the latch hole, thus enabling the door to be opened smoothly. After the door is opened, the slanted latch extends out of the latch hole again.
[0031] To close the door, proceed directly until the beveled surface of the latch hole abuts against the door frame. Continue closing the door until the beveled latch rotates to its straight surface parallel to the latch hole. At this point, the beveled surface of the latch is inclined relative to the latch hole, thus pushing the latch into the beveled latch hole when closing the door. When the door is closed, the latch hole and the lock hole are aligned, and the beveled latch extends out of the latch hole and enters the lock hole to complete locking the door.
[0032] In this way, under the premise of normal door opening and closing, when turning the handle to open the door, it is not necessary to drive the oblique lock tongue to completely disengage from the lock hole. It is only necessary to drive the sliding part to slide so that the limit block and the limit part are separated. The required stroke of turning the handle is shorter, which is more labor-saving and convenient. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0034] Figure 1 This is a first-view structural schematic diagram of a slanted locking tongue mechanism according to an embodiment of this application;
[0035] Figure 2 This is a second-view structural schematic diagram of a slanted locking tongue mechanism according to an embodiment of this application;
[0036] Figure 3 This is a schematic diagram of the state of the oblique locking tongue mechanism after the door is closed, according to an embodiment of this application;
[0037] Figure 4 This is a schematic diagram of the state of the oblique locking tongue mechanism after the door is opened, according to an embodiment of this application.
[0038] Figure 5 This is a schematic diagram of the state of a slanted locking tongue mechanism after the slanted locking tongue has reversed direction and the door has been closed, according to an embodiment of this application.
[0039] Figure 6 This is a schematic diagram of a slanted locking tongue structure with a third buffer in a slanted locking tongue mechanism according to an embodiment of this application;
[0040] Figure 7 This is a schematic diagram of a slanted locking tongue mechanism without a third buffer element, according to an embodiment of this application.
[0041] Figure 8 This is a schematic diagram of the third buffer component structure of a slanted locking tongue mechanism according to an embodiment of this application;
[0042] Figure 9 This is a schematic cross-sectional view of a slanted locking tongue mechanism equipped with a third buffer element, according to an embodiment of this application.
[0043] Explanation of reference numerals in the attached figures:
[0044] 1. Lock housing; 2. Lock tongue rod; 3. Angled lock tongue; 31. Straight surface; 311. First mounting groove; 3111. First locking groove; 32. Angled surface; 321. Second mounting groove; 3211. Second locking groove; 33. Limiting groove; 34. Abutting surface; 4. Sliding component; 41. Limiting block; 411. First surface; 412. Second surface; 42. Abutting part; 5. First elastic component; 6. Baffle; 7. Paddle; 8. Second elastic component; 9. First buffer component; 10. Mounting plate; 101. Guide hole; 11. Second buffer component; 12. Third buffer component; 121. First folding plate; 1211. First locking part; 122. Second folding plate; 1221. Second locking part. Detailed Implementation
[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0046] The following is combined Figures 1 to 9 This describes an embodiment of the present application.
[0047] According to embodiments of this application, in one aspect, a slanted locking tongue mechanism is provided, such as... Figure 1 and Figure 2 As shown, it includes a lock housing 1, a bolt 2, a slanted bolt 3, and a sliding member 4. The lock housing 1 has a bolt hole, and the slanted bolt 3 is slidably disposed in the bolt hole so that the slanted bolt 3 can retract into the bolt hole or partially extend out of the bolt hole.
[0048] The latch rod 2 is slidably connected to the lock housing 1, allowing it to slide closer to or further away from the latch hole. The end of the latch rod 2 closest to the latch hole is connected to the angled latch 3. When the latch rod 2 slides closer to the latch hole to one position, the angled latch 3 extends out of the latch hole. When the latch rod 2 slides further away from the latch hole to another position, the angled latch retracts into the latch hole.
[0049] The angled latch 3 has a straight surface 31 and an inclined surface 32. The angled latch 3 is rotatably connected to the end of the latch rod 2 near the latch hole. When the angled latch 3 rotates relative to the latch rod, one of its straight surface 31 and inclined surface 32 is parallel to the latch hole, while the other is inclined relative to the latch hole. That is, when the angled latch 3 rotates to one position, its straight surface 31 is parallel to the extending direction of the latch hole, and its inclined surface 32 is inclined relative to the extending direction of the latch hole. When the angled latch 3 rotates to another position, its inclined surface 32 is parallel to the extending direction of the latch hole, and its straight surface 31 is inclined relative to the extending direction of the latch hole.
[0050] A limiting part is provided on the side of the oblique locking tongue 3 near the locking tongue rod 2. The sliding member 4 is slidably sleeved on the locking tongue rod 2 so that the sliding member can slide closer to or further away from the oblique locking tongue 3. The sliding member 4 is used for transmission connection with the door lock handle. After the sliding member 4 is transmission connected to the door lock handle, the sliding member 4 can be driven to slide by using the door lock handle.
[0051] A limiting block 41 is provided on the side of the slider 4 near the oblique locking tongue 3. When the slider slides, the limiting block 41 can abut or separate from the limiting part. When the limiting block 41 abuts with the limiting part, it can restrict the rotation of the oblique locking tongue. When the limiting block 41 separates from the limiting part, the restriction on the oblique locking tongue is lifted.
[0052] With this configuration, after the door is closed, the straight surface 31 of the oblique latch is parallel to the latch hole, while the oblique surface 32 of the oblique latch 3 is inclined relative to the extension direction of the latch hole. The limiting block 41 abuts against the limiting part, and part of the oblique latch 3 extends out of the latch hole.
[0053] If the door is opened directly at this point, the straight surface 31 of the angled latch 3 will abut against the inner wall of the lock hole, preventing it from opening. To open the door, turn the door handle, causing the sliding member 4 to slide away from the angled latch 3 until the limiting block 41 separates from the limiting part. Since the angled latch 3 can rotate at this point, when the door is opened, the straight surface 31 of the angled latch 3 abuts against the inner wall of the lock hole, causing the angled latch 3 to rotate until its inclined surface 32 is parallel to the lock hole. At this point, the straight surface 31 of the angled latch 3 is inclined relative to the lock hole.
[0054] As the door continues to open, the straight surface 31 of the angled latch 3 abuts against the inner wall of the lock hole, thereby pushing the angled latch 3 into the lock hole and out of the lock hole, thus allowing the door to be opened smoothly. After the door is opened, the angled latch 3 extends out of the lock hole again.
[0055] To close the door, proceed directly until the beveled surface 32 of the latch hole abuts against the door frame. Continue closing, causing the beveled latch 3 to rotate until its straight surface 31 is parallel to the latch hole. At this point, the beveled surface 32 of the beveled latch 3 is inclined relative to the latch hole, thus pushing the beveled latch 3 into the beveled latch hole when closing the door. When the door is fully closed, the latch hole and the lock hole are aligned, and part of the beveled latch 3 extends out of the latch hole and enters the lock hole to complete locking. Slide the slider 4 close to the beveled latch 3 until the limiting block 41 abuts against the limiting part.
[0056] With this setup, under the premise of normal door opening and closing, when turning the handle to open the door, it is not necessary to drive the oblique locking tongue 3 to completely disengage from the lock hole. It is only necessary to drive the sliding part 4 to slide so that the limit block 41 is separated from the limit part. The required stroke of turning the handle is shorter, which is more labor-saving and convenient.
[0057] Specifically, the latch rod 2 can slide between a first position and a second position when sliding. When the latch rod 2 slides to the first position, the oblique latch 3 extends out of the latch hole. When the latch rod 2 slides to the second position, the oblique latch 3 retracts into the latch hole.
[0058] The angled latch 3 can rotate between a third position and a third position when rotating relative to the latch rod 2. When the angled latch 3 rotates to the third position, the straight surface 31 of the angled latch 3 is parallel to the extension direction of the latch hole, and the inclined surface 32 of the angled latch 3 is inclined relative to the extension direction of the latch hole. When the angled latch 3 rotates to the fourth position, the inclined surface 32 of the angled latch 3 is parallel to the extension direction of the latch hole, and the straight surface 31 of the angled latch 3 is inclined relative to the extension direction of the latch hole.
[0059] When the slider 4 slides, it can slide between the fifth and sixth positions. When the oblique locking tongue 3 is in the third position and the slider 4 slides to the fifth position, the limiting block 41 abuts against the limiting part. When the oblique locking tongue 3 is in the third position and the slider 4 slides to the sixth position, the limiting block 41 separates from the limiting part.
[0060] The distance between the fifth and sixth positions is shorter than the length of the oblique latch 3 extending out of the latch hole.
[0061] As an optional embodiment, such as Figure 3 As shown, a limiting groove 33 is formed on the side of the oblique locking tongue 3 near the sliding member 4, and the limiting part is the inner wall surface of the limiting groove 33. When the oblique locking tongue 3 is in the third position and the sliding member 4 slides to the fifth position near the oblique locking tongue, the limiting block 41 is inserted into the limiting groove 33. At this time, the limiting block 41 abuts against the inner wall surface of the limiting groove 33, thereby restricting the oblique locking tongue 3 from rotating to the fourth position. Subsequently, when the sliding member 4 slides away from the oblique locking tongue 3 to the sixth position, the limiting block 41 leaves the limiting groove 33, thereby releasing the limiting of the oblique locking tongue 3.
[0062] In some embodiments, such as Figures 3 to 5 As shown, the limiting block 41 has a first surface 411 and a second surface 412 that are arranged opposite to each other. The locking tongue 2 is rotatably connected to the lock housing 1 and can rotate around its own axis. When the locking tongue 2 rotates around its own axis, the oblique locking tongue 3 rotates synchronously with the locking tongue 2.
[0063] When the sliding member 4 slides close to the oblique locking tongue 3 to the fifth position, its first surface 411 abuts against the limiting part to restrict the oblique locking tongue 3 from rotating relative to the locking tongue rod 2. After the locking tongue rod is rotated 180° around its own axis, when the sliding member 4 slides close to the oblique locking tongue 3 to the fifth position, its second surface 412 abuts against the limiting part. The first surface 411 and the second surface 412 of the limiting block 41 are arranged opposite to each other.
[0064] When installing a door lock, it may need to be installed on the left or right side of the door frame. Therefore, the angled latch mechanism needs to be reversed.
[0065] When a door lock equipped with this angled latch mechanism needs to be installed on the left side of the door, the angled latch mechanism can be used normally.
[0066] When a door lock equipped with this oblique locking mechanism needs to be installed on the right side of the door, the oblique locking tongue 3 needs to be reversed so that the straight surface 31 and the oblique surface 32 of the oblique locking tongue 3 are interchanged.
[0067] At this point, the drive latch rod 2 and the angled latch 3 slide, causing the angled latch 3 to fully extend out of the latch hole. Then, the angled latch 3 rotates 180° around the axis of the latch rod 2, causing the directions of the straight surface 31 and the inclined surface 32 of the angled latch 3 to be interchanged, and then the angled latch 3 is pushed back into the latch hole. Now that the directions of the straight surface 31 and the inclined surface 32 of the angled latch 3 have been interchanged, when the slider 4 slides close to the angled latch 3 to the fifth position, the second surface 412 can abut against the limiting part to restrict the rotation of the angled latch 3 relative to the latch rod 2. This makes it easier to change the direction of the angled latch 3.
[0068] As an optional embodiment, the slider 4 is connected to the lock housing 1 through the first elastic element 5. Under the elastic force of the first elastic element 5, the slider 4 tends to slide closer to the oblique locking tongue 3.
[0069] Thus, when the door handle is turned and the sliding member 4 is moved away from the oblique locking tongue 3, the first elastic member is compressed. After the door handle is released, under the rebound action of the first elastic member 5, the sliding member 4 moves closer to the oblique locking tongue 3, thereby realizing the automatic reset of the sliding member 4.
[0070] In some embodiments, such as Figure 4 As shown, a limiting groove 33 is formed on the side of the oblique locking tongue 3 near the sliding member 4, and the limiting part is the inner wall surface of the limiting groove 33. An abutment surface 34 is provided on the oblique locking tongue 3, wherein the abutment surface 34 engages with the groove opening of the limiting groove 33. Thus, when the oblique locking tongue 3 is in the fourth position and the sliding member 4 slides to the fifth position near the oblique locking tongue 3, the limiting block 41 abuts against the abutment surface 34.
[0071] After the door is opened, the sliding member 4 slides close to the oblique latch 3 under the elastic force of the first elastic member 5 and abuts against the abutment surface 34 of the oblique latch 3. To close the door, the closing action is performed directly until the oblique surface 32 of the latch hole abuts against the door frame. Continuing to close the door causes the oblique latch 3 to rotate from the fourth position to the third position. At this time, the limiting block 41 also slides along the abutment surface 34 until it aligns with the limiting groove 33. Thus, under the elastic force of the first elastic member 5, the sliding member 4 slides close to the oblique latch 3 to the fifth position, causing the limiting block 41 to insert into the limiting groove 33 and abut against the inner wall of the limiting groove 33, thereby restricting the oblique latch 3 from rotating to the fourth position.
[0072] As an optional embodiment, such as Figure 2 As shown, the oblique locking tongue mechanism also includes a baffle 6, a paddle 7, and a second elastic element 8.
[0073] The baffle 6 is fixedly connected to the side wall of the latch rod 2, thus moving synchronously with the latch rod 2. The end of the latch rod 2 opposite to the oblique latch 3 is connected to the lock housing 1 through the second elastic element 8.
[0074] When the lever 7 flips, it can be positioned in a limiting engagement with or offset from the baffle 6 in the sliding direction of the latch rod 2. Specifically, the lever 7 can flip between the seventh and eighth positions. When the lever 7 flips to the seventh position, it engages with the baffle 6 in a limiting engagement with the baffle 6 in the direction close to the latch hole. At this time, when the latch rod 2 is in the first position, the lever 7 abuts against the baffle 6, thereby restricting the baffle 6 and the latch rod 2 from continuing to slide closer to the latch hole. At this time, under the elastic force of the second elastic element 8, the latch rod 2 and the baffle 6 tend to slide closer to the latch hole.
[0075] When the lever 7 is flipped to the eighth position, the lever 7 is offset from the baffle 6 in the direction of the baffle 6 near the latch hole.
[0076] Thus, when the driving latch rod 2 moves from the first position near the latch hole to the second position, the second elastic element 8 is compressed. After the force is released, the second elastic element 8 pushes the latch rod 2 to slide from the second position to the first position.
[0077] When the angled latch 3 needs to be replaced or repaired, the lever 7 can be flipped to the eighth position. Under the elastic force of the second elastic element 8, the latch rod 2 and the angled latch 3 are pushed to slide, so that the angled latch 3 is fully extended out of the latch hole. The repair or replacement can then be performed. After maintenance, the angled latch 3 is pushed back into the latch hole, so that the latch rod 2 slides between the first and second positions. Then the lever 7 is flipped to the seventh position.
[0078] The oblique locking tongue mechanism also includes a first buffer 9, which can be a rubber pad. The first buffer 9 is positioned on the side of the lever 7 near the baffle 6. When the lever 7 is in the seventh position and the locking tongue rod 2 is in the first position, the lever 7 abuts against the baffle 6 through the first buffer 9. This prevents the baffle 6 from impacting the lever 7 and causing damage when the second elastic member 8 pushes the locking tongue rod 2 from the second position away from the locking tongue hole to the first position.
[0079] As an optional embodiment, the oblique locking mechanism further includes a mounting plate 10, which is fixedly connected to the lock housing 1. A guide hole 101 is provided on the mounting plate 10, through which the locking bolt 2 is slidably disposed. Thus, the locking bolt 2 can slide along the guide hole 101 to slide between a first position and a second position, and the locking bolt 2 can also rotate about its own axis in the guide hole 101.
[0080] The slider 4 is connected to the mounting plate 10 via the first elastic element 5. Thus, when the handle is turned to drive the slider 4 to the sixth position, the first elastic element 5 is compressed. After releasing the handle and canceling the driving force, the slider 4 is pushed by the first elastic element 5 under its elastic force, and slides to the fifth position.
[0081] In optional embodiments, such as Figure 2 As shown, a contact portion 42 is provided on the slider 4, which can be an extension plate provided on the slider 4. In the direction in which the slider 4 slides from the sixth position near the oblique locking tongue 3 towards the fifth position, the mounting plate 10 engages with the contact portion 42 for limiting its movement. Furthermore, when the slider 4 is in the fifth position, the mounting plate 10 abuts against the contact portion 42, thereby limiting the contact portion 42 and the slider from continuing to slide closer to the locking tongue hole.
[0082] With this configuration, when the slider 4 is in the fifth position and the oblique locking tongue 3 is in the third position, the slider 4 does not need to be pressed against the oblique locking tongue 3 to achieve positioning and fixation.
[0083] The abutment part 42 can be sleeved on the locking tongue rod 2, and the handle can be connected to the abutment part 42 in a transmission manner. At this time, the handle drives the abutment part 42 to slide along the locking tongue rod 2, thereby driving the sliding member 4 to slide along the locking tongue rod 2.
[0084] In a further embodiment, a second buffer 11 is provided on the abutment portion 42 near the mounting plate 10. The second buffer 11 can be a rubber pad. When the slider 4 is in the fifth position, the mounting plate 10 abuts against the abutment portion 42 via the second buffer 11. This prevents the abutment portion 42 from impacting the mounting plate 10 when the first elastic member 5 pushes the slider 4 from the sixth position near the oblique locking tongue 3 to the fifth position, thus avoiding damage to the abutment portion 42 or the mounting plate 10.
[0085] As an optional embodiment, such as Figure 6 and Figure 8 As shown, the oblique locking tongue mechanism also includes a third buffer 12, which includes a first folding plate 121 and a second folding plate 122. One end of the first folding plate 121 and one end of the second folding plate 122 are connected to each other to form an angle relative to the angle between the straight surface 31 and the oblique surface 32 of the oblique locking tongue 3.
[0086] like Figure 7As shown, a first mounting groove 311 is formed on the straight surface 31 of the oblique latch 3, and a second mounting groove 321 is formed on the oblique surface 32 of the oblique latch 3, so that the first mounting groove 311 and the second mounting groove 321 are engaged and connected. A portion of the first folding plate 121 is embedded in the first mounting groove 311, thereby providing a buffering protection between the straight surface 31 of the oblique latch 3 and the inner wall of the lock hole when the door is opened. A portion of the second folding plate 122 is embedded in the second mounting groove 321, thereby providing a buffering protection between the oblique surface 32 of the oblique latch 3 and the door frame when the door is closed.
[0087] In optional embodiments, such as Figure 8 As shown, a first snap-fit part 1211 is provided on the first folding plate 121, and a first snap-fit groove 3111 is provided on the bottom of the first mounting groove 311. When the first folding plate 121 is partially embedded in the first mounting groove 311, the first snap-fit part 1211 snaps into the first snap-fit groove 3111, so that the first folding plate 121 is installed more securely.
[0088] The first snap-fit portion 1211 can be a first elastic flange connected to the first folding plate 121 and located on the side of the first folding plate 121 near the first mounting groove 311. The first elastic flange can elastically deform near the first folding plate 121. When the first folding plate 121 is inserted into the first mounting groove 311, the first elastic flange elastically deforms to allow the first folding plate 121 to be inserted into the first mounting groove 311. After the first folding plate 121 is inserted into the first mounting groove 311, the first elastic flange springs back and penetrates into the first snap-fit groove 3111, abutting against the side wall of the first snap-fit groove 3111.
[0089] like Figure 9 As shown, the first snap-fit portion 1211 can be a first elastic flange connected to the first folding plate 121 and located on the side of the first folding plate 121 near the first mounting groove 311. The first elastic flange can elastically deform near the first folding plate 121. When the first folding plate 121 is inserted into the first mounting groove 311, the first elastic flange undergoes elastic deformation to allow the first folding plate 121 to be inserted into the first mounting groove 311. After the first folding plate 121 is inserted into the first mounting groove 311, the first elastic flange rebounds and penetrates into the first snap-fit groove 3111, abutting against the side wall of the first snap-fit groove 3111.
[0090] like Figure 8 As shown, the second folding plate 122 is provided with a second snap-fit part 1221, and the bottom of the second mounting groove 321 is provided with a second snap-fit groove 3211. When the second folding plate 122 is partially embedded in the second mounting groove 321, the second snap-fit part 1221 snaps into the second snap-fit groove 3211, so that the second folding plate 122 is installed more securely.
[0091] like Figure 9As shown, the second snap-fit portion 1221 can be a second elastic flange connected to the second folding plate 122 and located on the side of the second folding plate 122 near the second mounting groove 321. The second elastic flange can elastically deform near the second folding plate 122. When the second folding plate 122 is inserted into the second mounting groove 321, the second elastic flange undergoes elastic deformation to allow the second folding plate 122 to be inserted into the second mounting groove 321. After the second folding plate 122 is inserted into the second mounting groove 321, the second elastic flange rebounds and penetrates into the second snap-fit groove 3211, abutting against the side wall of the second snap-fit groove 3211.
[0092] The second folding plate 122 is provided with a second snap-fit part 1221, and the bottom of the second mounting groove 321 is provided with a second snap-fit groove 3211. When the second folding plate 122 is partially embedded in the second mounting groove 321, the second snap-fit part 1221 snaps into the second snap-fit groove 3211, so that the second folding plate 122 is installed more securely.
[0093] According to an embodiment of this application, another aspect provides a door lock including any of the oblique locking mechanisms described above.
[0094] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by this application.
Claims
1. A slanted latch mechanism, comprising a lock housing (1), a latch rod (2), and a slanted latch (3), wherein the lock housing (1) is provided with a latch hole, the slanted latch (3) is slidably disposed within the latch hole, one end of the latch rod (2) is connected to the slanted latch (3) and slidably connected to the lock housing (1), characterized in that: The oblique locking tongue (3) is provided with a straight surface (31), an oblique surface (32) and a limiting part. The oblique locking tongue (3) is rotatably connected to one end of the locking tongue rod (2) and can be rotated to the point where one of the straight surface (31) and the oblique surface (32) is parallel to the locking tongue hole. A sliding member (4) is slidably sleeved on the latch rod (2). The sliding member (4) is connected to the door lock handle. A limiting block (41) is provided on the side of the sliding member (4) near the oblique latch (3). The sliding member (4) can slide so that the limiting block (41) abuts or separates from the limiting part. When the limiting block (41) abuts with the limiting part, the oblique latch (3) is restricted from rotating.
2. The oblique locking tongue mechanism according to claim 1, characterized in that, The oblique locking tongue (3) has a limiting groove (33) on the side near the sliding member (4), and the limiting part is the inner wall surface of the limiting groove (33); When the sliding member (4) slides close to the oblique locking tongue (3), the limiting block (41) can be inserted into the limiting groove (33) and abut against the inner wall of the limiting groove (33) to restrict the rotation of the oblique locking tongue (3); When the slider (4) slides away from the oblique locking tongue (3), the limiting block (41) can leave the limiting groove (33).
3. The oblique locking tongue mechanism according to claim 1, characterized in that, The limiting block (41) has a first surface (411) and a second surface (412) that are set opposite to each other. The locking tongue rod (2) is rotatably connected to the lock shell (1) and can rotate around its own axis. When the slider (4) slides close to the oblique locking tongue (3), the first surface (411) can abut against the limiting part to restrict the oblique locking tongue (3) from rotating relative to the locking tongue rod (2); When the locking tongue rod (2) rotates 180° around its own axis, and the sliding member slides close to the oblique locking tongue (3), the second surface (412) can abut against the limiting part to restrict the rotation of the oblique locking tongue (3).
4. The oblique locking tongue mechanism according to claim 1, characterized in that, Also includes: The first elastic element (5) is connected to the lock shell (1) through the first elastic element (5). Under the elastic force of the first elastic element (5), the sliding element (4) tends to slide closer to the oblique locking tongue (3).
5. The oblique locking tongue mechanism according to claim 1, characterized in that, Also includes: A baffle (6) is connected to the latch rod (2); The paddle (7) is rotatably connected to the lock housing (1). When the paddle (7) is rotatably connected, it can be limited and engaged with the baffle (6) or staggered in the sliding direction of the latch rod (2). The second elastic element (8) connects the end of the latch rod (2) away from the oblique latch (3) to the lock shell (1) through the second elastic element (8). Under the elastic force of the second elastic element (8), the latch rod (2) has a sliding tendency to extend out of the latch hole. A first buffer (9) is disposed on the side of the paddle (7) near the baffle (6), and the paddle (7) can abut against the baffle (6) through the first buffer (9).
6. The oblique locking tongue mechanism according to claim 4, characterized in that, Also includes: Mounting plate (10) is connected to the lock housing (1). Mounting plate (10) is provided with guide hole (101). Lock tongue rod (2) is slidably disposed through guide hole (101). Sliding member (4) is connected to mounting plate (10) through first elastic member (5). Sliding member (4) is provided with abutment part (42). Mounting plate (10) is limited and cooperates with abutment part (42) in sliding direction of sliding member (4).
7. The oblique locking tongue mechanism according to claim 6, characterized in that, Also includes: The second buffer (11) is disposed on the abutment portion (42) on the side near the mounting plate (10), and the mounting plate (10) can abut against the abutment portion (42) through the second buffer (11).
8. The oblique locking tongue mechanism according to claim 1, characterized in that, Also includes: The third buffer (12) includes a first folding plate (121) and a second folding plate (122) connected to each other. A first mounting groove (311) is provided on the straight surface (31) of the oblique locking tongue (3), and a second mounting groove (321) is provided on the oblique surface (32) of the oblique locking tongue (3). The first mounting groove (311) and the second mounting groove (321) are connected. The first folding plate (121) is partially embedded in the first mounting groove (311), and the second folding plate (122) is partially embedded in the second mounting groove (321).
9. The oblique locking tongue mechanism according to claim 8, characterized in that, The first folding plate (121) is provided with a first snap-fit part (1211), and the bottom of the first mounting groove (311) is provided with a first snap-fit groove (3111), and the first snap-fit part (1211) snaps into the first snap-fit groove (3111). The second folding plate (122) is provided with a second snap-fit part (1221), and the bottom of the second mounting groove (321) is provided with a second snap-fit groove (3211), and the second snap-fit part (1221) snaps into the second snap-fit groove (3211).
10. A door lock, characterized in that, Includes the oblique locking tongue mechanism as described in any one of claims 1-9.