Lock and transmission mechanism for same

Abstract

The transmission mechanism comprises a square shaft and a transmission assembly, the square shaft comprises a base part, shaft parts are arranged on the two sides of the base part, square holes are formed in the shaft parts in the axial direction, a first protruding part used for being matched with a latch bolt is further arranged at one end of the base part, and a second protruding part used for being matched with the latch bolt is further arranged at the other end of the base part. A polygonal connecting table is fixedly arranged on the periphery of one shaft part; the transmission assembly comprises a transmission piece and a transmission plate, the transmission piece is arranged on the outer side of the connecting table in a sleeving mode and is constructed to be capable of driving the transmission plate to move through rotation, and one end of the transmission plate is connected with a first sliding column used for being matched with the dead bolt. According to the transmission mechanism provided by the utility model, the latch bolt and the dead bolt can be controlled only by adopting the matching of the universal square shaft, the transmission sheet and the transmission plate, the number of matched parts is small, the risk of interference or abrasion among the parts can be greatly reduced, and the service life of the lock is prolonged.

Description

Technical Field

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

[0002] At present, the lock bodies and internal structures used in system doors and windows on the market are mostly made of stamped parts. The internal transmission structure is complex, and the components are prone to mutual interference and wear, which not only increases the risk of the lock getting stuck and damaged, resulting in reduced safety of the lock, but also affects the overall service life of the lock. On the other hand, the coordination between some metal transmission structures will also cause excessive noise during use, affecting the user's use experience. Therefore, there is an urgent need for a lock with fewer transmission coordination structures, easy installation, and strong tensile performance to at least partially solve the above problems. Utility Model Content

[0003] The utility model aims to provide a lock and a transmission mechanism for the lock, which has a simple matching structure and reduces the risk of interference and wear between accessories.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transmission mechanism for a lock, comprising a square shaft and a transmission assembly, the square shaft comprising a base, shaft portions are arranged on both sides of the base, a square hole is arranged on the shaft portion along the axial direction, a first protrusion for cooperating with an oblique tongue is further arranged at one end of the base, a connecting platform with a polygonal structure is fixedly arranged on the periphery of one shaft portion; the transmission assembly comprises a transmission sheet and a transmission plate, the transmission sheet is sleeved on the outer side of the connecting platform, and is constructed to be able to drive the transmission plate to move by rotation, and a first sliding column for cooperating with the square tongue is connected to one end of the transmission plate.

[0005] As a preferred solution, the other end of the transmission plate is connected to a second sliding column, and the second sliding column is used to cooperate with a limit block elastically connected to the shell to limit the state of the tongue.

[0006] As a preferred embodiment, the transmission plate includes a connecting end and a moving end, the connecting end is constructed in a circular ring shape, the inner ring of the circular ring is composed of a number of circular arcs connected end to end, the number of circular arcs corresponds to the number of polygonal edges of the connecting platform, the intersection points of the connecting platform are movably arranged within the range of the circular arcs, and the moving end is used to connect to the transmission plate.

[0007] As a preferred solution, the moving end is connected to a third sliding column, and the transmission plate is provided with an arc groove that cooperates with the third sliding column.

[0008] As a preferred solution, the connecting platform is configured as a hexagon.

[0009] As a preferred embodiment, the square shaft also includes a blocking portion fixedly connected to one side of the other shaft portion, and the transmission mechanism includes two rebound members cooperating with the blocking portion, the rebound members respectively abut against the upper and lower sides of the blocking portion, and the other end of the rebound member is connected to the housing of the lock through an elastic member.

[0010] As a preferred solution, the resilient member is made of plastic.

[0011] As a preferred solution, the square shaft is made of stainless steel.

[0012] The utility model also provides a technical solution for a lock, comprising the transmission mechanism described in any of the above solutions.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The transmission mechanism provided by the utility model can realize the control of the oblique tongue and the square tongue by only adopting a universal square shaft and the cooperation of a transmission sheet and a transmission plate. The fewer the cooperating parts, the greater the risk of interference or wear between the parts, and the longer the service life of the lock. On the other hand, the square shaft, oblique tongue, square tongue, etc. in the lock are made of stainless steel, which can improve the tensile strength of the lock itself, and improve the safety and anti-destruction ability of the lock. The rebound part is made of high-strength plastic material, which can not only reduce the friction and wear with the square shaft and increase the service life of the rebound part and the square shaft, but also reduce the noise during rotation, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the lock in the embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the lock in the embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the partial structure inside the lock in the embodiment of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the square shaft in the embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the transmission sheet in the embodiment of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the cooperation between the square shaft and the transmission plate in the embodiment of the utility model;

[0021] The meaning of each number in the figure is:

[0022] 1. Main shell; 2. Sub-shell; 3. Cover plate; 4. Oblique tongue; 41. Second protrusion; 5. Square tongue; 6. Square shaft; 61. Base; 62. Shaft; 63. First protrusion; 64. Connecting platform; 65. Blocking part; 7. Transmission plate; 71. Connecting end; 72. Moving end; 73. Third sliding column; 8. Transmission plate; 81. First sliding column; 82. Second sliding column; 83. Arc groove; 9. Limit groove; 10. Limit block; 11. First elastic member; 12. Resilient member; 13. Second elastic member. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] 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 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.

[0025] This embodiment discloses a lock and a transmission mechanism for the lock, see Figure 1-Figure 3 The lock includes a housing, which is the installation and support body of the entire lock, and is used for installing various parts of the lock and connecting with the door or window. The housing includes a main housing 1 arranged in a rectangular frame, a secondary housing 2 covering the main housing 1, and a cover plate 3 connected to the side ends of the main housing 1 and the secondary housing 2. It is known to those skilled in the art that a retractable oblique tongue 4 and a square tongue 5 are installed in the housing, as well as a transmission mechanism that cooperates with the handle to drive the action of the oblique tongue 4 and the square tongue 5.

[0026] In this embodiment, the main housing 1 is made of aluminum alloy die-casting, and the auxiliary housing 2 is made of stainless steel plate stamping. This material not only increases the thickness of the lock body, but also meets European standards, making the product sufficiently competitive in the market; the cover plate 3 is preferably made of stainless steel, which is not only hard, but also easy to polish and brush, and looks more beautiful. In other embodiments, in order to reduce costs, the housing can also use traditional stamping parts. The oblique tongue 4 and the square tongue 5 are important components for opening and closing the door and locking the door, respectively. They are made of stainless steel, which can improve their own tensile strength, thereby improving the safety and anti-destruction performance of the lock.

[0027] The transmission mechanism includes a square shaft 6 that passes through the housing. Figure 3 The square shaft 6 includes a base 61 for bearing or supporting. The two sides of the base 61 are connected with shafts 62 for matching with the main housing 1 and the auxiliary housing 2. The shaft 62 is axially penetrated with a square hole for connecting square steel. The square steel is used to connect with the handle. The handle can be rotated by external force to drive the square steel to rotate, thereby driving the square shaft 6 to rotate. A first protrusion 63 is fixed at one end of the base 61, and a connecting platform 64 with a polygonal structure is also fixed on the periphery of one of the shafts 62. In this embodiment, the square shaft 6 is an important transmission structure of power. In order to improve its stability, an integrated molding structure is adopted. At the same time, the whole is preferably made of stainless steel, which is strong and wear-resistant, and has strong tensile properties, which can improve its service life.

[0028] The square shaft 6 is in contact with the second protrusion 41 fixed on the oblique tongue 4 through the first protrusion 63, and the clockwise rotation of the square shaft 6 can drive the oblique tongue 4 to extend and retract. The square shaft 6 is further connected to the square tongue 5 through a transmission assembly, and when the square shaft 6 rotates, the transmission assembly drives the square tongue 5 to extend and retract.

[0029] Specific, combined Figure 2The transmission assembly includes a transmission sheet 7 and a transmission plate 8. One end of the transmission sheet 7 is sleeved on the outside of the connecting platform 64 of the square shaft 6, and the other end is connected to the transmission plate 8. The transmission sheet 7 is constructed to drive the transmission plate 8 to move up and down by rotation. The transmission plate 8 is arranged along the height direction of the shell. A first sliding column 81 is connected to the lower position of the transmission plate 8. The first sliding column 81 is slidably connected to the Z-shaped groove on the side of the square tongue 5. Then, the up and down movement of the first sliding column 81 and the Z-shaped groove of the square tongue 5 can control the extension and retraction of the square tongue 5. A second sliding column 82 is connected to the upper position of the transmission plate 8. Corresponding to the second sliding column 82, a limiting groove 9 is provided on the main shell 1, and a limiting block 10 that can move elastically is provided in the limiting groove 9. One end of the limiting block 10 cooperates with the limiting groove 9 to form a limiting space with a roughly 8-shaped structure. The other end of the limiting block 10 is fixedly connected to the limiting groove 9 through a first elastic member 11. The second sliding column 82 moves in the limiting space, and its up and down movement needs to overcome the elastic resistance of the limiting block 10. This structure can limit the position of the tongue 5 in the extended state or the retracted state.

[0030] See also Figure 5 , Figure 6 The transmission piece 7 further includes an integrally formed connection end 71 and a moving end 72. The connection end 71 is used to cooperate with the connection platform 64 of the square shaft 6. The connection end 71 is constructed in a circular ring shape, and the inner ring of the circular ring is constructed by connecting a plurality of arcs end to end. The number of arcs corresponds to the number of polygonal edges of the connection platform 64. The polygonal intersections of the connection platform 64 are movably arranged within the range of the arcs. When the square shaft 6 rotates, the connection platform 64 abuts against the intersections of the arcs to drive the transmission piece 7 to rotate. When the square shaft 6 is reset, since the connection platform 64 has a certain activity space within the range of the arc, the reset of the square shaft 6 will not drive the return of the transmission piece 7. In this embodiment, the polygon of the connection platform 64 is preferably constructed as a hexagon. This configuration can ensure that the square shaft 6 can achieve normal door opening or door locking by a slight rotation. If the number of edges is too small, such as a pentagon or a quadrilateral, the square shaft 6 needs to rotate a large angle to achieve door opening or door locking. If the number of edges is too large, the activity space of the transmission piece 7 is insufficient, thereby affecting the retraction of the inclined bolt 4.

[0031] The moving end 72 of the transmission plate 7 is fixedly connected to the third sliding column 73. Correspondingly, the transmission plate 8 is provided with an arc groove 83 that cooperates with the third sliding column 73. The rotation of the connecting end 71 of the transmission plate 7 can drive the movement of the moving end 72, and the transmission plate 8 is driven to move up and down through the cooperation of the third sliding column 73 and the arc groove 83.

[0032] Combination Figure 3In order to enable the square shaft 6 to automatically reset, the square shaft 6 further includes a baffle 65 fixedly connected to one side of the other shaft portion 62. Correspondingly, the transmission mechanism further includes two resilient members 12 cooperating with the baffle 65. The two resilient members 12 are respectively in contact with the upper and lower sides of the baffle 65. The other ends of the two resilient members 12 are respectively fixedly connected to the main housing 1 through the second elastic member 13. In order to ensure the movement stability of the resilient member 12, the main housing 1 is provided with a long groove for limiting the activity space of the resilient member 12. In this embodiment, the resilient member 12 is made of plastic material. By using plastic material, not only can the friction and wear with the square shaft 6 be reduced, the service life of the resilient member 12 and the square shaft 6 be improved, but also the noise during rotation can be reduced. It is preferably made of high-strength POM material.

[0033] For ease of understanding, the transmission process of the transmission mechanism in this embodiment is exemplarily described as follows:

[0034] In the initial state, the oblique tongue 4 is in the extended state, and the square tongue 5 is in the retracted state. The handle and the square shaft 6 are rotated counterclockwise, the oblique tongue 4 does not move, and the transmission plate 7 rotates synchronously. The moving end 72 of the transmission plate 7 drives the transmission plate 8 to move downward, and the first sliding column 81 drives the square tongue 5 to pop out. At the same time, the second sliding column 82 overcomes the resistance of the limit block 10 and moves to the lower position of the limit slot 9.

[0035] Release the handle, and under the action of the rebound member 12, the square shaft 6 returns to its original position, and the transmission plate 7 does not move;

[0036] When the square tongue 5 needs to be released from the pop-up state, the handle square shaft 6 is rotated clockwise, the oblique tongue 4 is retracted, the transmission plate 7 is rotated synchronously, the moving end 72 of the transmission plate 7 drives the transmission plate 8 to move upward, the first sliding column 81 drives the square tongue 5 to retract, and at the same time, the second sliding column 82 overcomes the resistance of the limit block 10 and moves to the upper position of the limit slot 9;

[0037] When the handle is released, the square shaft 6 is reset under the action of the rebound member 12, the oblique tongue 4 is extended, and the transmission plate 7 does not move.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A transmission mechanism for a lock, characterized in that: include: A square shaft (6) comprises a base (61), wherein shaft portions (62) are provided on both sides of the base (61), wherein the shaft portion (62) is provided with a square hole along the axial direction, and one end of the base (61) is also provided with a first protrusion (63) for cooperating with the oblique tongue (4), wherein a connecting platform (64) having a polygonal structure is fixedly provided on the periphery of one shaft portion (62); The transmission assembly comprises a transmission sheet (7) and a transmission plate (8), wherein the transmission sheet (7) is sleeved on the outer side of a connecting platform (64) and is configured to drive the transmission plate (8) to move by rotation, and one end of the transmission plate (8) is connected to a first sliding column (81) for cooperating with a square tongue (5).

2. The transmission mechanism for a lock according to claim 1, characterized in that: The other end of the transmission plate (8) is connected to a second sliding column (82), and the second sliding column (82) is used to cooperate with a limit block (10) elastically connected to the housing to limit the state of the tongue (5).

3. The transmission mechanism for a lock according to claim 1, characterized in that: The transmission plate (7) comprises a connecting end (71) and a moving end (72), wherein the connecting end (71) is constructed in a circular ring shape, wherein the inner ring of the circular ring is composed of a plurality of circular arcs connected end to end, wherein the number of circular arcs corresponds to the number of polygonal sides of the connecting platform (64), and each intersection point of the connecting platform (64) is movably arranged within the range of the circular arcs, and the moving end (72) is used for connecting to the transmission plate (8).

4. The transmission mechanism for a lock according to claim 3, characterized in that: The moving end (72) is connected to a third sliding column (73), and the transmission plate (8) is provided with an arc groove (83) that matches the third sliding column (73).

5. The transmission mechanism for a lock according to claim 3, characterized in that: The connecting platform (64) is constructed in a hexagonal shape.

6. The transmission mechanism for a lock according to claim 1, characterized in that: The square shaft (6) further comprises a baffle portion (65) fixedly connected to one side of the other shaft portion (62); the transmission mechanism comprises two resilient members (12) cooperating with the baffle portion (65); the resilient members (12) respectively abut against the upper and lower sides of the baffle portion (65); and the other end of the resilient member (12) is connected to the housing of the lock via an elastic member.

7. The transmission mechanism for a lock according to claim 6, characterized in that: The resilient member (12) is made of plastic.

8. The transmission mechanism for a lock according to claim 1, characterized in that: The square shaft (6) is made of stainless steel.

9. A lock, characterized in that: It comprises the transmission mechanism described in any one of claims 1 to 8.

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