Split door lock

Abstract

The utility model discloses a split door lock which comprises a lock body, a lock body installation spring bolt, a transmission arm and a handle dial wheel, a preformed hole is formed in the center of the handle dial wheel, the transmission arm comprises a transverse arm and a longitudinal arm, and the lock body further comprises a first installation hole and a second installation hole. The first mounting hole and the second mounting hole are used for arranging split bolts of the handle decorative cover, the first mounting hole is formed between the maximum stroke position of the handle shifting wheel and the maximum stroke position of the longitudinal arm, and the transverse arm and the longitudinal arm of the transmission arm are connected through an M-shaped avoiding structure to avoid the angular position fixing part and the first mounting hole. The initial position of the side edge of the ratchet of the handle shifting wheel does not make contact with the first installation hole, and the second installation hole is an open type hole. According to the split door lock, the transverse arm and the longitudinal arm of the transmission arm are connected through the M-shaped avoiding structure and used for avoiding the angular position fixing part and the first mounting hole, the second mounting hole is an open hole, position occupation is reduced, and a split bolt of a handle decorative cover is installed on the lock body without being affected.

Description

Technical Field

[0001] The utility model relates to a split door lock. Background Art

[0002] Mortise locks are generally divided into two types: those with an integrated handle and lock cylinder decorative cover are generally called panel locks, while those with separate handle and lock cylinder decorative covers are generally called split locks, such as the split lock structure disclosed in publication number CN220036359U. Split locks, with separate handle and lock cylinder decorative covers, are generally more expensive. However, their advantages are that the separate decorative covers can be independently disassembled and assembled for easy maintenance, and the panel is simpler and more aesthetically pleasing. Since non-standard door locks cannot fit into standard reserved slots and holes on the door, they require re-grooving and drilling to adapt, which is cumbersome and expensive to install, resulting in low market demand. Common door locks on the market are generally universal locks, which adhere to uniform standards and match the reserved slots on the door. Common sizes for universal door locks are 50 and 58. The 50 size refers to the standard length between the lock cylinder hole and the handle hole on the lock body of 50mm. The 50-type door lock is a small panel lock. The reason why the small 50-type door lock is not processed into a split lock is that the length between the lock core hole and the handle hole is short. An area for the lock core and lock tongue to move needs to be reserved on the lock body, and the space inside is not enough to set the tension bolts of the independent decorative cover of the split lock. Utility Model Content

[0003] In view of the above shortcomings, the purpose of the present invention is to provide a universal 50-type split door lock.

[0004] To this end, the utility model provides a split door lock, including a lock body, on which a lock tongue, a transmission arm and a handle dial are installed. A reserved hole is provided in the center of the handle dial, and the transmission arm includes a transverse arm and a longitudinal arm. The lock body also includes a first mounting hole and a second mounting hole. The first mounting hole and the second mounting hole are used to set the tension bolts of the handle decorative cover. The first mounting hole is provided between the maximum stroke position of the handle dial and the longitudinal arm. An M-shaped avoidance structure is adopted between the transverse arm and the longitudinal arm of the transmission arm to avoid the angular position fixing part and the first mounting hole. The ratchet side of the handle dial does not contact the first mounting hole in its initial position, and the second mounting hole is an open hole.

[0005] Furthermore, the angular position fixing portion is arranged adjacent to the edge of the corner point of the lock body, the M-shaped avoidance structure is a double right-angle structure, and the middle horizontal side and vertical side of the M-shaped avoidance structure are arranged adjacent to the angular position fixing portion.

[0006] Furthermore, the second mounting hole is semicircular or arc-shaped, and its opening faces the side opposite to the panel, and the side edge of the lock body is connected to two end points of the arc segment of the second mounting hole.

[0007] Furthermore, the first mounting hole is provided at a reserved position of the lock body between the transmission arm, the lock tongue spring assembly and the handle dial wheel.

[0008] Furthermore, the handle dial includes a first ratchet and a second ratchet, the first ratchet cooperates with the transverse arm of the transmission arm to drive the lock tongue to move, and the second ratchet cooperates with the limit stud to limit the rotation angle of the handle dial in the direction of driving the lock tongue away from the panel, and the limit stud is fixed on the lock body and is used to cooperate with the bolt to fix the lock body on the door.

[0009] Furthermore, the handle dial further includes an arc-shaped limiting portion, the first ratchet, the second ratchet and the arc-shaped limiting portion are arranged on the same side of the handle dial, and the arc-shaped limiting portion is used to limit the rotation angle of the handle dial in the reverse direction.

[0010] Furthermore, the centers of the first mounting hole, the second mounting hole and the reserved hole are located on the same straight line.

[0011] Furthermore, it also includes a third mounting hole and a fourth mounting hole for installing the lock core decorative cover, the third mounting hole, the fourth mounting hole and the center of the lock core hole are located on the same straight line, the fourth mounting hole is an arc-shaped hole, the third mounting hole is aligned with the first mounting hole, the fourth mounting hole is aligned with the second mounting hole, and the center of the lock core hole is aligned with the center of the reserved hole.

[0012] Furthermore, the lock body also includes a square tongue and a lock core dial wheel that drives the square tongue, and the square tongue is arranged between the lock tongue and the third mounting hole.

[0013] Furthermore, the distance between the center of the reserved hole and the center of the lock core hole is 50 mm.

[0014] The beneficial effects of the utility model are:

[0015] (1) The existing 50-type universal door lock (standard door lock) is relatively small in size. Its length and width make it difficult to install the tension bolts of the decorative cover of the split door lock (the tension bolts pass through the lock body and are likely to collide with the transmission arm and the dial wheel). If its size is increased, it becomes a non-standard door lock that cannot be matched with the existing door slots. When installing, additional slots and holes must be drilled on the door, which significantly affects its market prospects. The utility model is a split door lock. An M-shaped avoidance structure (a double right-angle structure in the specific embodiment) is used between the horizontal arm and the longitudinal arm of the transmission arm to connect the avoidance angle position fixing part and the first mounting hole. The second mounting hole is an open hole (such as a semicircular hole in the specific embodiment). This reduces the position occupied by one of the tension bolts in the width direction of the lock body. By designing the transmission arm avoidance structure and reducing the position of the second mounting hole, space is made for the first mounting hole, so that the tension bolts of the handle decorative cover can be installed on the lock body without being affected.

[0016] (2) The second ratchet and arc-shaped limiter of the present invention cooperate with the upper and lower sides of the same arc-shaped limiter located above the second mounting hole to limit the angular range of the forward and reverse rotation of the handle dial, making full use of the idle space outside the corner and saving the core position in the middle of the lock body. The limit stud is not only used to cooperate with the second ratchet and the arc-shaped limiter to limit the rotation range of the handle dial, but also has a threaded hole inside it for cooperating with a bolt to fix the lock body to the door, further reducing the space occupied and leaving valuable space for the split lock setting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of the interior of the lock body;

[0018] Figure 2 It is a side view schematic diagram of the lock body;

[0019] Figure 3 This is a schematic diagram of the handle and decorative cover;

[0020] Figure 4 This is a product picture of this utility model.

[0021] Explanation of the accompanying drawings: 1. Lock body; 101. Support plate; 2. Lock tongue; 201. Spring assembly; 202. Limit card; 3. Transmission arm; 301. Horizontal arm; 302. Longitudinal arm; 303. Double right-angle structure; 304. Horizontal edge; 305. Longitudinal edge; 4. Handle dial; 401. Reserved hole; 402. First ratchet; 403. Second ratchet; 404. Arc-shaped limiting portion; 5. First mounting hole; 6. Second mounting hole; 7. Angular position fixing portion; 8. Lock core hole; 9. Handle; 10. Handle decorative cover; 11. Stud; 12. Square shaft; 13. Lock core dial; 14. Third mounting hole; 15. Fourth mounting hole; 16. Square tongue; 17. Limit stud. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0023] Reference Figures 1 to 3As shown, a split door lock of the present invention includes a lock body 1, on which a lock tongue 2, a transmission arm 3 and a handle dial 4 are installed. A reserved hole 401 is provided in the center of the handle dial 4, and the transmission arm 3 includes a transverse arm 301 and a longitudinal arm 302. The lock body 1 also includes a first mounting hole 5 and a second mounting hole 6. The first mounting hole 5 and the second mounting hole 6 are used to insert the stud 11 of the handle decorative cover 10, and the tension bolts are fixed with the stud 11. The first mounting hole 5 is provided between the maximum stroke position of the handle dial 4 and the longitudinal arm 302. The transverse arm 301 and the longitudinal arm 302 of the transmission arm 3 are connected by an M-shaped avoidance structure for avoiding the angular position fixing part 7 and the first mounting hole 5. The ratchet side of the handle dial 4 does not contact the first mounting hole 5 in its initial position, and the second mounting hole 6 is an open hole. Figure 1 The internal structure of the lock body 1 is shown. The lock body 1 adopts a universal 50-type door lock. The length between the center of the reserved hole 401 of the handle dial wheel 4 and the center of the lock core hole 8 is 50 mm. The lock body 1 also includes a shell (not shown). A bolt hole is provided at each of the four corners of the lock body 1. Figure 2The three bolt holes provided on the panel of the lock body 1 are used to fix the lock body 1 to the door using bolts or screws. The main internal structure of the lock body 1 includes: a handle dial 4 provided in the upper right corner, the square shaft 12 of the handle 9 passes through the reserved hole 401 in the center of the handle dial 4, and the handle 9 drives the handle dial 4 to rotate, and the handle dial 4 includes a ratchet; a transmission arm 3, the transmission arm 3 includes a horizontal arm 301 and a longitudinal arm 302, the ratchet cooperates with the horizontal arm 301 of the transmission arm 3, and the end of the horizontal arm 301 that cooperates with the ratchet is provided with a T-shaped tail end, and the T-shaped tail end moves in an I-shaped groove, and the direction of the I-shaped groove is parallel to the length direction of the horizontal arm 301; the lock tongue 2 and the lock The groove for the movement of the tongue 2, the lock tongue 2 is arranged at the upper left position of the lock body 1, the longitudinal arm 302 of the transmission arm 3 is fixed to the end of the lock tongue 2, and the other side of the longitudinal arm 302 is connected to the spring assembly 201, and the spring assembly 201 is used to make the lock tongue 2 rebound after the handle is released, and also includes a limit card 202 to limit the range of the lock tongue 2 to retract inward; the square tongue 16 and the lock cylinder dial wheel 13, the square tongue 16 and the lock cylinder dial wheel 13 are arranged below the lock tongue 2 and the handle dial wheel 4, the lock core passes through the lock core hole 8 and acts on the lock cylinder dial wheel 13 to make the square tongue 16 pop out or retract the panel. An angular position fixing portion 7 needs to be provided at the upper left corner of the lock body 1 for firmly fixing the lock body 1. The stroke of the transmission arm 3 may collide with the tension bolt of the handle decorative cover 10. In this embodiment, the support plate 101 of the lock body 1 is extended to the left by shortening the groove length corresponding to the lock tongue 2, and an open second mounting hole 6 such as a semicircular hole is used on the right side of the lock body 1 for the tension bolt to pass through. Furthermore, the semicircular hole can also be changed into an arc hole with the opening facing the side opposite to the panel, and the side edge of the lock body 1 is connected to the two end points of the arc segment of the second mounting hole 6. The first mounting hole 5 is provided in a reserved position on the lock body 1 between the transmission arm 3, the spring assembly 201 of the lock tongue 2, and the handle dial 4. When the transmission arm 3 is in its initial position, i.e., when the lock tongue 2 is in the popped-out state, the side of the handle dial 4 does not contact the tension bolt (i.e., the first mounting hole position), thereby preventing the handle dial 4 from colliding with the tension bolt and causing abnormal noise or loosening of the bolt. When the lock tongue 2 retracts inward, the maximum travel of the longitudinal arm 302 contacts the limit card 202, and does not contact the corresponding tension bolt or the first mounting hole 5. To prevent the transmission arm 3 from colliding and interfering with the bolt, the angular position fixing portion 7 is provided adjacent to the edge of the corner point of the lock body 1 to free up internal space. The M-shaped avoidance structure is a double right-angle structure 303, and the middle horizontal side 304 and longitudinal side 305 of the M-shaped avoidance structure are provided adjacent to the angular position fixing portion 7, thereby avoiding the first mounting hole 5 (i.e., the tension bolt) during the reciprocating motion of the transmission arm 3.This embodiment also includes a third mounting hole 14 and a fourth mounting hole 15 for mounting studs and tension bolts for mounting the lock core decorative cover. The centers of the third mounting hole 14 and the fourth mounting hole 15 are located on the same straight line. The fourth mounting hole 15 is an arc-shaped hole. The third mounting hole 14 is aligned with the first mounting hole 5, the fourth mounting hole 15 is aligned with the second mounting hole 6, and the center of the lock core hole 8 is aligned with the center of the reserved hole 401. It should be noted that, due to the universal 50-type door lock, the distance between the lock core hole 8 and the handle dial wheel 4 is 50 mm, which limits the position of the upper lock core dial wheel 13, the handle dial wheel 4, and the specific positions of the lock tongue 2 and the square tongue 16 that cooperate with the dial wheel. The lock tongue 2 and the square tongue 16 are basically in adjacent design positions, so it is difficult to set the installation position of the first mounting hole 5 in the longitudinal direction. This embodiment sets the first mounting hole 5 and the second mounting hole 6 through the above structure, and at the same time sets the third mounting hole 14 and the fourth mounting hole 15 below the square tongue 16 and the lock core dial wheel 13, thereby realizing the independent setting of the handle decorative cover and the lock core decorative cover, with reference to the handle decorative cover 10. Figure 3 As shown, the lock core decorative cover is basically the same as the handle decorative cover, the difference being that the perforation reserved in the center matches the size of the handle 9 and the lock core respectively.

[0024] In the above embodiment, referring to Figure 1 As shown, the handle dial 4 includes a first ratchet 402, a second ratchet 403 and a bracketed limiting portion 404, the first ratchet 402 cooperates with the T-shaped tail end on the horizontal arm 301 of the transmission arm 3 to drive the lock tongue 2 to move, the second ratchet 403 cooperates with the limiting stud 11 to limit the rotation angle of the handle dial 4 in the direction of driving the lock tongue 2 away from the panel, the limiting stud 17 is fixed on the lock body 1 and is used to cooperate with the bolt to fix the lock body 1 on the door, the first ratchet 402, the second ratchet 403 and the arc-shaped limiting portion 404 are arranged on the same side of the handle dial 4, and the arc-shaped limiting portion 404 includes an arc segment that cooperates with the outer periphery of the limiting stud 17 to limit the rotation angle of the handle dial 4 in the reverse direction.

[0025] Reference Figure 1 As shown, the centers of the first mounting hole 5 , the second mounting hole 6 and the reserved hole 401 are located on the same straight line.

[0026] In the above embodiment, the length of the lock body 1 is 93 mm and the width is 66.2 mm, wherein the distance between the center of the reserved hole 401 and the center of the lock core hole 8 is 50 mm.

[0027] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A split door lock, comprising a lock body, a lock tongue, a transmission arm and a handle dial, the center of which is provided with a reserved hole, characterized in that: The transmission arm includes a transverse arm and a longitudinal arm, and the lock body also includes a first mounting hole and a second mounting hole. The first mounting hole and the second mounting hole are used to set the tension bolts of the handle decorative cover. The first mounting hole is set between the maximum stroke position of the handle dial and the longitudinal arm. The M-shaped avoidance structure is used to connect the transverse arm and the longitudinal arm of the transmission arm to avoid the angular position fixing part and the first mounting hole. The ratchet side of the handle dial is not in contact with the first mounting hole in the initial position, and the second mounting hole is an open hole.

2. A split door lock according to claim 1, characterized in that: The angular position fixing portion is arranged adjacent to the edge of the corner point of the lock body, the M-shaped avoidance structure is a double right-angle structure, and the middle horizontal side and vertical side of the M-shaped avoidance structure are arranged adjacent to the angular position fixing portion.

3. A split door lock according to claim 1 or 2, characterized in that: The second mounting hole is semicircular or arc-shaped, and its opening faces the side opposite to the panel, and the side edge of the lock body is connected to two end points of the arc segment of the second mounting hole.

4. A split door lock according to claim 3, characterized in that: The first mounting hole is provided on a reserved position of the lock body between the transmission arm, the lock tongue spring assembly and the handle dial wheel.

5. A split door lock according to claim 4, characterized in that: The handle dial includes a first ratchet and a second ratchet. The first ratchet cooperates with the transverse arm of the transmission arm to drive the lock tongue to move. The second ratchet cooperates with the limiting stud to limit the rotation angle of the handle dial in the direction of driving the lock tongue away from the panel. The limiting stud is fixed to the lock body and is used to cooperate with the bolt to fix the lock body to the door.

6. A split door lock according to claim 5, characterized in that: The handle dial further includes an arc-shaped limiting portion. The first ratchet, the second ratchet and the arc-shaped limiting portion are arranged on the same side of the handle dial, and the arc-shaped limiting portion is used to limit the rotation angle of the handle dial in the reverse direction.

7. The split door lock according to claim 3, characterized in that: The centers of the first mounting hole, the second mounting hole and the reserved hole are located on the same straight line.

8. The split door lock according to claim 3, characterized in that: It also includes a third mounting hole and a fourth mounting hole for installing the lock core decorative cover. The third mounting hole, the fourth mounting hole and the center of the lock core hole are located on the same straight line. The fourth mounting hole is an arc-shaped hole. The third mounting hole is aligned with the first mounting hole, the fourth mounting hole is aligned with the second mounting hole, and the center of the lock core hole is aligned with the center of the reserved hole.

9. The split door lock according to claim 8, characterized in that: The lock body also includes a square tongue and a lock core dial wheel that drives the square tongue. The square tongue is arranged between the lock tongue and the third mounting hole.

10. The split door lock according to claim 8, characterized in that: The distance between the center of the reserved hole and the center of the lock core hole is 50 mm.

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