Lock transmission mechanism for heavy sliding door

Abstract

The utility model relates to a lockset transmission mechanism for a heavy sliding door, which comprises a lock body transmission part, the lock body transmission part comprises a lock head, a transmission plate and a rotatable coupler knuckle assembly, and the lock head is provided with a rotary shifting piece; one end of the transmission plate is provided with a blocking opening matched with the rotating shifting piece, and the other end of the transmission plate is connected with a transmission column; the coupler knuckle assembly comprises a coupler knuckle plate, the coupler knuckle plate is constructed to be formed by riveting a plurality of coupler knuckle pieces, the coupler knuckle plate comprises a follow-up part and a hook part, and the follow-up part is provided with a follow-up hole for containing the transmission column. The integral strength of the coupler knuckle plate is higher through the coupler knuckle plate structure formed by riveting the multiple coupler knuckle pieces, and the lock catch part is combined with the lock catch box material through the proper lock catch plate thickness, so that the tensile property is better matched with the use requirement of a heavy sliding door. Meanwhile, the transmission mechanism can achieve power transmission mainly through a transmission plate and a specially-arranged coupler knuckle plate structure, the number of matched parts is small, and the risk of interference or abrasion between the parts is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware locks, in particular to a lock transmission mechanism for heavy sliding doors. Background Art

[0002] At present, the lock bodies used in sliding system doors and windows on the domestic market are mostly made by stamping mode. The designed lock bodies are more to meet functional requirements. They cannot meet the use requirements of heavy sliding doors in terms of tensile strength and safety performance. They also lack sufficient competitiveness in the international market. For example, the hook tongue design is relatively weak and often cannot meet the requirements in destructive force tests. At the same time, the transmission structure of the lock is complex, and mutual interference and wear are prone to occur between the components, which in turn affects the overall service life of the lock. Utility Model Content

[0003] The purpose of the present utility model is to provide a lock transmission mechanism for heavy sliding doors, which can solve the technical problems mentioned in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lock transmission mechanism for heavy-duty sliding doors, comprising a lock body transmission part, wherein the lock body transmission part comprises a lock head, a transmission plate and a rotatable hook tongue assembly, wherein the lock head is provided with a rotating paddle; one end of the transmission plate is provided with a blocking opening that cooperates with the rotating paddle, and the other end is connected to a transmission column; the hook tongue assembly comprises a hook tongue plate, wherein the hook tongue plate is constructed to be connected by multiple hook tongue pieces, and the hook tongue plate comprises a follower part and a hook part, and the follower part is provided with a follower hole for accommodating the transmission column.

[0005] In a preferred embodiment, the follower hole is obliquely arranged on the follower part to facilitate force application.

[0006] In a preferred embodiment, the follower holes are provided in two groups, which are symmetrically distributed relative to the central hole of the follower portion. This structure is used to broaden the application range of the hook and tongue plate, making it applicable to door locks with upper and lower double hook and tongue structures.

[0007] In a preferred embodiment, the follower is further provided with a weight-reducing hole, which enables the follower to rotate more flexibly.

[0008] In a preferred embodiment, the lock transmission mechanism also includes a locking portion cooperating with the hook portion, and the locking portion includes a locking plate and a locking box connected to the inner side of the locking plate. The thickness of the locking plate is set between 3.8-4 mm, so that the locking portion has greater tensile strength.

[0009] In a preferred embodiment, the follower portion is provided with a vertical barrier portion below one side close to the lock cover plate, and the barrier portion is constructed to abut against the top of the cover plate frame in a horizontal state, and the barrier portion and the top of the cover plate frame cooperate to limit the upward movement of the hook portion.

[0010] In a preferred embodiment, the lock transmission mechanism also includes a torsion spring and a first limiting column and a second limiting column respectively connected to the two ends of the torsion spring, the first limiting column is connected to the lock housing, and the second limiting column is connected to the transmission plate. This structure is used to lock the movement state of the transmission plate and the hook.

[0011] In a preferred embodiment, the first limiting column is further provided with a pressing column, and the pressing column is pressed against the torsion spring end on this side to prevent the torsion spring from being displaced too much and causing a reduction in elastic force.

[0012] On the other hand, the present invention further provides a heavy-duty sliding door lock, comprising the lock transmission mechanism described in any one of the above solutions.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1) The lock transmission mechanism for heavy-duty sliding doors provided by the utility model has a hook-tongue plate structure with multiple hook-tongue pieces riveted together, which makes the overall strength of the hook-tongue plate higher, and the lock part has a tensile strength that better matches the use requirements of heavy-duty sliding doors by combining the appropriate lock plate thickness and lock box material.

[0015] 2) In the present invention, the transmission mechanism can realize power transmission mainly through the transmission plate and the specially arranged hook-and-tongue plate structure, with fewer matching parts, which greatly reduces the risk of interference or wear between parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the lock transmission mechanism and the lock housing in the embodiment of the present utility model;

[0017] Figure 2 This is a structural diagram of the lock transmission mechanism in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic structural diagram of a transmission plate in an embodiment of the present utility model;

[0019] Figure 4 It is a structural diagram of the hook and tongue plate in an embodiment of the present utility model.

[0020] The meaning of each number in the figure is:

[0021] 1. Lock body transmission part; 11. Lock head; 111. Rotating paddle; 12. Transmission plate; 121. Blocking opening; 122. Transmission column; 123. Long groove; 13. Hook and tongue plate; 131. Hook and tongue piece; 132. Follower part; 1321. Center hole; 1322. Follower hole; 1323. Weight reduction hole; 1324. Blocking part; 133. Hook part; 14. Connecting column; 2. Lock part; 21. Lock plate; 22. Lock box; 3. Lock housing; 4. Cover plate; 41. Cover plate frame; 5. Torsion spring; 6. First limiting column; 7. Second limiting column. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] See also Figure 1-Figure 2 This embodiment discloses a lock transmission mechanism for a heavy sliding door, including a lock body transmission part 1 and a lock catch part 2. Under the action of external force, the lock body transmission part 1 and the lock catch part 2 cooperate to lock the door.

[0025] The lock body transmission part 1 includes a lock head 11 connected to the lock housing 3, and a transmission plate 12 that cooperates with the lock head 11 to realize power transmission. The transmission plate 12 is connected to a hook tongue assembly, and the hook tongue assembly is constructed as a rotatable structure. By rotating, its hook tongue cooperates with the lock part 2 to realize locking.

[0026] Specifically, the lock head 11 is rotatably connected to the lock housing 3 and is located slightly below the lock housing 3. The two side surfaces of the lock head 11 are exposed from the lock housing 3, making it easy to connect with the force-applying structure knob, key, etc. A rotating paddle 111 is fixed to the outer periphery of the lock head 11. Rotating the lock head 11 by external force can drive the rotating paddle 111 to rotate accordingly.

[0027] The transmission plate 12 is in contact with the housing on one side and has a predetermined height so that its lower end can be connected to the lock head 11 and its upper end can be connected to the hook-knuckle assembly. Figure 3 The lower end of the transmission plate 12 is provided with a blocking opening 121 that cooperates with the rotating paddle 111 of the lock head 11. When the lock head 11 is rotated clockwise, the rotating paddle 111 can extend into the blocking opening 121. Continuing to rotate the lock head 11 clockwise can drive the transmission plate 12 downward, and rotating the lock head 11 counterclockwise can drive the transmission plate 12 upward. A transmission post 122 is fixed at the upper end of the transmission plate 12, which is used to cooperate with the hook-knuckle assembly.

[0028] Combine Figure 4 The hook-tongue assembly is rotatably connected to the lock housing 3 and includes a hook-tongue plate 13. Traditional hook-tongue plates 13 are mostly made of zinc alloy or aluminum alloy, which are difficult to meet the requirements in destructive force experiments. In this embodiment, the hook-tongue plate 13 is constructed by stacking and riveting multiple hook-tongue pieces 131. The hook-tongue pieces 131 are preferably made of 304 stainless steel plates. Compared with traditional hook-tongue structures, this structure has stronger tensile strength and is more suitable for heavy door structures, which can ensure the overall safety performance of the lock.

[0029] In this embodiment, the hook-and-tongue plate 13 further includes an integrally formed follower portion 132 and a hook portion 133, which are arranged vertically. A central hole 1321 is provided at the center of the follower portion 132 for mounting the connecting post 14, and the hook-and-tongue plate 13 is rotatably connected to the connecting post 14. On one side of the central hole 1321, the follower portion 132 further has a follower hole 1322 for accommodating the transmission post 122. The transmission post 122 extends into the follower hole 1322. The up and down movement of the transmission post 122 drives the follower portion 132 to rotate relative to the connecting post 14, thereby lifting the hook portion 133. See again. Figure 4 The follower hole 1322 is roughly constructed as a triangular structure with an arc-shaped trajectory to reasonably match the running trajectory of the transmission column 122. At the same time, the follower hole 1322 is preferably arranged obliquely on the follower part 132, that is, its setting orientation is at a certain angle to the horizontal plane to facilitate force application.

[0030] In a preferred embodiment, the follower holes 1322 are provided in two groups, which are symmetrically distributed relative to the center hole 1321. This structure can further broaden the application scope of the hook and tongue plate 13, making it applicable to door locks with upper and lower double hook and tongue structures.

[0031] In another preferred embodiment, the follower part 132 is further provided with a weight-reducing hole 1323, which makes the follower part 132 rotate more flexibly and the force applied more easily. The weight-reducing holes 1323 can be arranged around the center hole 1321, and the number is confirmed according to the actual processing conditions.

[0032] The transmission plate 12 is disposed between the hook-knuckle assembly and the housing, and the transmission plate 12 is provided with a long slot 123 adapted to fit the connecting post 14 .

[0033] See also Figure 1 The locking part 2 includes a locking plate 21 and a locking box 22 connected to the inner side of the locking plate 21. In this embodiment, the thickness of the locking plate 21 is set between 3.8-4 mm, and the locking box 22 is preferably made of 304 stainless steel. The combination of the two makes the locking part 2 have greater tensile strength and is more compatible with heavy door structures.

[0034] In actual use, the lock head 11 is rotated clockwise, and the rotating paddle 111 drives the transmission plate 12 downward, and the transmission post 122 moves in the follower hole 1322 of the hook and tongue plate 13, thereby driving the follower portion 132 of the hook and tongue plate 13 to rotate counterclockwise, so that the hook portion 133 is engaged with the lock box 22. The lock head 11 is rotated counterclockwise again, and the rotating paddle 111 drives the transmission plate 12 upward, and the transmission post 122 moves in the follower hole 1322 of the hook and tongue plate 13, thereby driving the follower portion 132 of the hook and tongue plate 13 to rotate clockwise, so that the hook portion 133 is disengaged from the lock box 22.

[0035] In order to limit the locking state of the hook portion 133, in this embodiment, the lock transmission mechanism further includes a first limiting structure and a second limiting structure, and the two limiting structures limit the hook and tongue plate 13 from two directions respectively.

[0036] See also Figure 2 The first limiting structure is arranged on the following part 132 of the hook and tongue plate 13. The specific structure is that the following part 132 is provided with a vertical blocking part 1324 at the lower side close to the lock cover plate 4. The blocking part 1324 is horizontal in the locked state and abuts against the top of the cover frame 41. The blocking part 1324 and the top of the cover frame 41 cooperate to limit the upward movement of the hook part 133.

[0037] The second limiting structure includes a torsion spring 5 and a first limiting post 6 and a second limiting post 7 respectively connected to the two ends of the torsion spring 5. The first limiting post 6 is fixedly connected between the two housings, and the second limiting post 7 is fixedly connected to the middle end of the transmission plate 12. The second limiting post 7 and the first limiting post 6 are arranged in an upward and downward inclination. When the transmission plate 12 moves downward and the hook 133 is in a locked state, the second limiting post 7 pulls the torsion spring 5 to its transition point, thereby locking the movement of the transmission plate 12 and the hook 133. In another preferred embodiment, the first limiting post 6 is further provided with a compression post (not shown) mounted on the torsion spring 5. The other end of the compression post abuts against a housing. The compression post can compress the end of the torsion spring 5 in this position to prevent the torsion spring 5 from being displaced too much and causing a reduction in elastic force. The compression post is preferably made of nylon to prevent rigid contact from causing loud noise or damage to the torsion spring 5.

[0038] The lock transmission mechanism for heavy-duty sliding doors provided in this embodiment utilizes a hook-and-tongue plate 13 structure riveted with multiple hook-and-tongue pieces 131, resulting in higher overall strength. The lock catch 2, through the appropriate thickness of the lock catch plate 21 and the material of the lock case 22, ensures that the tensile strength of this embodiment is more compatible with the requirements of heavy-duty sliding doors. Furthermore, the weight-reducing structure provided on the follower portion 132 of the hook-and-tongue plate 13 prevents excessive weight from compromising its rotational flexibility. Furthermore, the transmission mechanism provided in this embodiment primarily achieves power transmission through the transmission plate 12 and the specially designed hook-and-tongue plate 13 structure, resulting in a minimal number of components, significantly reducing the risk of interference or wear between components.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A lock transmission mechanism for a heavy sliding door, characterized in that: The invention comprises a lock body transmission part (1), wherein the lock body transmission part (1) comprises: A lock head (11), wherein the lock head (11) is provided with a rotating paddle (111); A transmission plate (12), wherein one end of the transmission plate (12) is provided with a blocking opening (121) that cooperates with the rotating paddle (111), and the other end is connected to a transmission column (122); A rotatable hook-tongue assembly comprises a hook-tongue plate (13), wherein the hook-tongue plate (13) is constructed by stacking a plurality of hook-tongue plates (131), wherein the hook-tongue plate (13) comprises a follower portion (132) and a hook portion (133), wherein the follower portion (132) is provided with a follower hole (1322) for accommodating a transmission column (122).

2. The lock transmission mechanism for a heavy sliding door according to claim 1, characterized in that: The follower hole (1322) is obliquely arranged on the follower portion (132).

3. The lock transmission mechanism for a heavy sliding door according to claim 1, characterized in that: The follower holes (1322) are arranged in two groups, which are symmetrically distributed relative to the central hole (1321) of the follower part (132).

4. The lock transmission mechanism for a heavy sliding door according to claim 1, characterized in that: The follower part (132) is also provided with a weight-reducing hole (1323).

5. The lock transmission mechanism for a heavy sliding door according to claim 1, characterized in that: The lock transmission mechanism also includes a locking portion (2) that cooperates with the hook portion (133), and the locking portion (2) includes a locking plate (21) and a locking box (22) connected to the inner side of the locking plate (21), and the thickness of the locking plate (21) is set between 3.8 and 4 mm.

6. The lock transmission mechanism for a heavy sliding door according to claim 1, characterized in that: The follower portion (132) is provided with a vertical blocking portion (1324) below one side close to the lock cover plate (4), and the blocking portion (1324) is constructed to abut against the top end of the cover plate frame (41) in a horizontal state.

7. The lock transmission mechanism for a heavy sliding door according to claim 1, characterized in that: The lock transmission mechanism also includes a torsion spring (5) and a first limiting column (6) and a second limiting column (7) respectively connected to the two ends of the torsion spring (5), wherein the first limiting column (6) is connected to the lock housing (3), and the second limiting column (7) is connected to the transmission plate (12).

8. The lock transmission mechanism for a heavy sliding door according to claim 7, characterized in that: The first limiting column (6) is also provided with a pressing column, and the pressing column is pressed on the end of the torsion spring (5) on this side.

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