Mechanical multi-lock-point lock body

Abstract

The utility model discloses a mechanical multi-lock-point lock body which comprises a lock shell and a lock panel installed on the side portion of the lock shell, a main tongue, an inclined tongue, an upper lock point strip and a lower lock point strip are arranged on the lock panel, and a square shaft core and a lock cylinder hole used for installing an external lock cylinder are installed on the lock shell. A transmission mechanism connected among the square shaft core, the external lock cylinder, the main bolt, the inclined bolt, the upper lock point strip and the lower lock point strip is arranged in the lock shell, the primary locking assembly comprises a square shaft back-lifting piece, a sliding plate shifting piece, a locking sliding plate and a lower locking sliding plate, the square shaft core, the square shaft back-lifting piece, the sliding plate shifting piece and the locking sliding plate are in linkage, the upper lock point strip slides upwards, and the lower lock point strip slides downwards. And meanwhile, the upper lock sliding plate, the main tongue and the lower lock sliding plate are linked, so that the lower lock point strip slides downwards, and the upper lock point strip and the lower lock point strip achieve the bidirectional lock point use function. The door lock is suitable for vertical hinged doors, sliding doors, folding doors and the like, multi-purpose auxiliary installation can be achieved when the doors are installed through the two-way lock points, the door lock has good universality, and great convenience can be brought to users.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a mechanical multi-locking point lock body for a swing door, a sliding door and a folding door. Background Art

[0002] Door locks are necessary furniture accessories used in conjunction with doors. Modern people have high requirements for quality of life and safety. They not only want beautiful appearance, but also require door locks to have anti-theft and anti-pry functions. Therefore, multi-locking point structure lock bodies have become the main choice in the lock market. The lock bodies on the market are either designed for swing doors or sliding doors. They are not universal and inconvenient to use. Utility Model Content

[0003] The purpose of the utility model is to provide a mechanical multi-locking point lock body. The utility model is suitable for use with swing doors, sliding doors, folding doors, etc. The two-way locking points can realize multi-purpose auxiliary installation when installing the door. It has good versatility and can bring great convenience to users.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mechanical multi-locking point lock body, comprising a lock shell, a lock panel installed on the side of the lock shell, a main tongue, an oblique tongue, an upper lock point strip and a lower lock point strip are arranged on the lock panel, a square shaft core and a lock core hole for installing an external lock core are installed on the lock shell, and a transmission mechanism connected between the square shaft core, the external lock core, the main tongue, the oblique tongue, the upper lock point strip and the lower lock point strip is arranged in the lock shell;

[0005] The main tongue and the oblique tongue move relative to the lock panel and have a locking position protruding relative to the lock panel and an unlocking position retracted into the lock housing. The main tongue can be driven to move between its locking position and unlocking position by an external lock core;

[0006] The transmission mechanism includes a primary locking assembly, which includes a square shaft return plate, a slide plate paddle, an upper locking slide plate and a lower locking slide plate;

[0007] The square shaft return-lifting piece is installed on the square shaft core in a linkage manner so that the square shaft core and the square shaft return-lifting piece rotate synchronously, the skateboard paddle is rotatably installed in the lock shell through the first rotating shaft, the skateboard paddle is cooperatively connected with the square shaft return-lifting piece, and the skateboard paddle is driven to rotate when the square shaft return-lifting piece rotates, the skateboard paddle is connected with the upper locking point strip through the upper locking skateboard, and when the skateboard paddle rotates, the upper locking skateboard drives the upper locking point strip to slide vertically; the inner end of the main tongue is rotatably arranged in the lock shell through the second rotating shaft, the upper locking skateboard is linked to the main tongue to drive the main tongue to rotate, and the main tongue is connected with the lower locking point strip through the lower locking skateboard, and when the main tongue rotates, the lower locking skateboard drives the lower locking point strip to slide vertically.

[0008] The utility model is further configured as follows: a first shift block is provided on the square shaft return piece, a first movable groove for the first shift block to extend into is provided on the skateboard paddle, a second shift block is provided on the skateboard paddle, a second movable groove for the second shift block to extend into is provided on the locking skateboard, a first upper guide hole and a second upper guide hole extending vertically are also provided on the locking skateboard, a guide rod is provided on the inner side of the lock shell, the second rotating shaft and the guide rod are respectively matched with the first upper guide hole and the second upper guide hole, an upper plug-in protrusion is provided on the upper locking point strip, and an upper plug-in hole for the upper plug-in protrusion to be inserted is provided on the locking skateboard.

[0009] The utility model is further configured as follows: a first movable hole is provided on the main tongue, a third shift block is provided on the upper locking slide plate and extends into the first movable hole, a fourth shift block is also provided on the main tongue, a second movable hole is provided on the lower locking slide plate for the fourth shift block to extend into, the second movable hole extends in the horizontal direction, the lower locking slide plate is also provided with a first lower guide hole and a second lower guide hole extending vertically, the second rotating shaft and the guide rod are respectively matched with the first lower guide hole and the second lower guide hole, the lower locking point strip is provided with a lower plug-in protrusion, and the lower locking slide plate is provided with a lower plug-in hole for the lower plug-in protrusion to be inserted into.

[0010] The utility model is further configured such that a first positioning recess and a second positioning recess are provided inside the first movable hole, and when the locking slide plate slides vertically, the third shift block switches between the first positioning recess and the second positioning recess.

[0011] The utility model is further configured such that an upper guide bracket and a lower guide bracket are provided on the lock panel, and an upper guide channel for the upper locking point strip to pass through and a lower guide channel for the lower locking point strip to pass through are respectively provided on the upper guide bracket and the lower guide bracket.

[0012] The utility model is further configured that the transmission mechanism also includes a secondary locking assembly, and the secondary locking assembly includes a safety paddle, a safety card plate and a square shaft safety plate;

[0013] The safety paddle is rotatably mounted on the first rotating shaft, the external lock core is cooperatively connected with the safety paddle to drive the safety paddle to rotate, the safety card plate is rotatably mounted on the guide rod, the square shaft safety plate is linkedly mounted on the square shaft core so that the square shaft core and the square shaft safety plate rotate synchronously, the safety paddle is cooperatively connected with the safety card plate, the safety paddle drives the safety card plate to rotate, so that the safety card plate presses against the square shaft safety plate to limit the square shaft safety plate from rotating clockwise, thereby preventing the square shaft core from rotating clockwise.

[0014] The utility model is further configured such that a fifth shift block is provided on the safety shift piece, a third movable groove cooperating with the fifth shift block is provided on the safety card plate, a locking protrusion is provided on the square shaft safety plate, and a locking step is provided on the safety card plate near the square shaft safety plate for constituting a circumferential limit to the locking protrusion when it abuts against the locking protrusion.

[0015] The utility model is further configured as follows: a first positioning rod is provided on the safety paddle, a second positioning rod is provided on the skateboard paddle, a mounting rod is provided on the inner side of the lock housing, a first torsion spring is provided between the first positioning rod and the mounting rod, a second torsion spring is provided between the second positioning rod and the mounting rod, and an arc-shaped hole with the first rotating shaft as the center is also provided on the safety paddle, and the mounting rod is inserted into the arc-shaped hole.

[0016] The utility model is further configured that the transmission mechanism also includes a tilted tongue paddle, the tilted tongue paddle and the tilted tongue form a linkage to drive the tilted tongue to lock into the lock housing, and a third torsion spring is also installed in the lock housing to act on the tilted tongue to cause the tilted tongue to have a tendency to move outward.

[0017] The utility model is further configured such that a sliding piece is provided at the inner end of the inclined tongue, a commutator piece is provided in the lock housing for sliding along a direction perpendicular to the movement direction of the inclined tongue, and a spring is also provided in the lock housing, the spring acts on the commutator piece so that the commutator piece abuts against the side of the sliding piece away from the third torsion spring.

[0018] The beneficial effects of the utility model are as follows: the utility model is suitable for use with swing doors, sliding doors, folding doors, etc., and the two-way locking point can realize multi-purpose auxiliary installation when installing the door. It has good versatility and can bring great convenience to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of the utility model as a whole;

[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 An exploded view of the utility model as a whole;

[0022] Figure 4 It is a schematic diagram of the transmission structure from the square shaft core to the upper locking point strip of the utility model;

[0023] Figure 5 It is a schematic diagram of the transmission structure from the upper locking slide to the lower locking point strip of the utility model;

[0024] Figure 6 This is a schematic diagram of the matching structure of the locking slide plate and the main tongue of the utility model;

[0025] Figure 7This is a schematic diagram of the structure of the secondary locking assembly of the utility model;

[0026] Figure 8 This is a schematic diagram of the installation structure of the first torsion spring and the second torsion spring of the utility model;

[0027] Fig. 9 It is a schematic diagram of the reversing structure of the oblique tongue of the utility model.

[0028] In the figure: 1, lock housing; 2, lock panel; 3, main tongue; 4, oblique tongue; 5, upper locking point strip; 6, lower locking point strip; 7, square shaft core; 8, lock core hole; 9, transmission mechanism; 10, square shaft return plate; 11, slide plate paddle; 12, upper locking slide plate; 13, lower locking slide plate; 14, first rotating shaft; 15, second rotating shaft; 16, first dial block; 17, first movable groove; 18, second dial block; 19, second movable groove; 20, first upper guide hole; 21, second upper guide hole; 22, guide rod; 23, upper plug-in protrusion; 24, upper plug-in hole; 25, first movable hole; 26, third dial block; 27, fourth dial block; 28, second movable hole; 29, first lower guide hole; 30, second lower guide hole; 31, lower plug-in protrusion; 32, lower plug-in hole; 33, first positioning recess; 34, second positioning recess; 35, upper guide bracket; 36, lower guide bracket; 37, upper guide channel; 38, lower guide channel; 39, safety pick; 40, safety card plate; 41, square shaft safety plate; 42, fifth pick block; 43, third movable groove; 44, locking protrusion; 45, locking step; 46, first positioning rod; 47, second positioning rod; 48, mounting rod; 49, first torsion spring; 50, second torsion spring; 51, arc hole; 52, oblique tongue pick; 53, third torsion spring; 54, sliding plate; 55, commutator plate; 56, spring. DETAILED DESCRIPTION

[0029] 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.

[0030] Example: As shown in the attached Figures 1 to 9 A mechanical multi-locking point lock body shown in the figure comprises a lock housing 1, a lock panel 2 installed on the side of the lock housing 1, a main tongue 3, a slanted tongue 4, an upper lock point strip 5 and a lower lock point strip 6 are arranged on the lock panel 2, a square shaft core 7 and a lock core hole 8 for installing an external lock core are installed on the lock housing 1, and a transmission mechanism 9 connected between the square shaft core 7, the external lock core, the main tongue 3, the slanted tongue 4, the upper lock point strip 5 and the lower lock point strip 6 is arranged in the lock housing 1;

[0031] The main tongue 3 and the oblique tongue 4 move relative to the lock panel 2 and have a locking position protruding relative to the lock panel 2 and an unlocking position retracted into the lock housing 1. The main tongue 3 can be driven to move between its locking position and unlocking position by an external lock core;

[0032] The transmission mechanism 9 includes a primary locking assembly, which includes a square shaft return plate 10, a slide plate paddle 11, an upper locking slide plate 12 and a lower locking slide plate 13;

[0033] The square shaft return plate 10 is installed on the square shaft core 7 in a linkage manner so that the square shaft core 7 and the square shaft return plate 10 rotate synchronously. The skateboard paddle 11 is rotatably installed in the lock shell 1 through the first rotating shaft 14. The skateboard paddle 11 is cooperatively connected with the square shaft return plate 10. When the square shaft return plate 10 rotates, the skateboard paddle 11 is driven to rotate. The skateboard paddle 11 is connected to the upper locking point strip 5 through the upper locking skateboard 12. When the skateboard paddle 11 rotates, the upper locking skateboard 12 drives the upper locking point strip 5 to slide vertically; the inner end of the main tongue 3 is rotatably arranged in the lock shell 1 through the second rotating shaft 15. The upper locking skateboard 12 is linked with the main tongue 3 to drive the main tongue 3 to rotate. The main tongue 3 is connected to the lower locking point strip 6 through the lower locking skateboard 13. When the main tongue 3 rotates, the lower locking skateboard 13 drives the lower locking point strip 6 to slide vertically.

[0034] As attached Figure 4 As shown, the square shaft return piece 10 is provided with a first shift block 16, the skateboard shift piece 11 is provided with a first movable groove 17 for the first shift block 16 to extend into, the skateboard shift piece 11 is provided with a second shift block 18, and the locking skateboard 12 is provided with a second movable groove 19 for the second shift block 18 to extend into, and the locking skateboard 12 is also provided with a first upper guide hole 20 and a second upper guide hole 21 extending vertically, and a guide rod 22 is provided on the inner side of the lock housing 1, and the second rotating shaft 15 and the guide rod 22 respectively cooperate with the first upper guide hole 20 and the second upper guide hole 21, so that the locking skateboard 12 can slide vertically under the action of the skateboard shift piece 11, and the upper locking point strip 5 is provided with an upper plug-in protrusion 23, and the upper locking skateboard 12 is provided with an upper plug-in hole 24 for the upper plug-in protrusion 23 to be inserted. After the two are plugged in and matched, the locking skateboard 12 can drive the upper locking point strip 5 to slide vertically.

[0035] As attached Figure 5 and attached Figure 6As shown, the main tongue 3 is provided with a first movable hole 25, the upper locking slide plate 12 is provided with a third dial block 26 extending into the first movable hole 25, the main tongue 3 is also provided with a fourth dial block 27, the lower locking slide plate 13 is provided with a second movable hole 28 for the fourth dial block 27 to extend into, the second movable hole 28 extends in the horizontal direction, the lower locking slide plate 13 is also provided with a first lower guide hole 29 and a second lower guide hole 30 extending vertically, the second rotating shaft 15 and the guide rod 22 are respectively matched with the first lower guide hole 29 and the second lower guide hole 30, so that the lower locking slide plate 13 can slide vertically under the action of the main tongue 3, the lower locking point strip 6 is provided with a lower plug-in protrusion 31, and the lower locking slide plate 13 is provided with a lower plug-in hole 32 for the lower plug-in protrusion 31 to be inserted, after the two are plugged in and matched, the lower locking slide plate 13 can drive the lower locking point strip 6 to slide vertically.

[0036] As attached Figure 6 As shown, a first positioning recess 33 and a second positioning recess 34 are provided on the inner side of the first movable hole 25. When the locking slide plate 12 slides vertically, the third shift block 26 switches between the first positioning recess 33 and the second positioning recess 34, so as to position the main tongue 3 in both the unlocked and locked states.

[0037] As attached Figure 4 and attached Figure 5 As shown, the lock panel 2 is provided with an upper guide bracket 35 and a lower guide bracket 36, and the upper guide bracket 35 and the lower guide bracket 36 are respectively provided with an upper guide channel 37 for the upper locking point strip 5 to pass through and a lower guide channel 38 for the lower locking point strip 6 to pass through. The upper guide channel 37 and the lower guide channel 38 are provided to guide the upper locking point strip 5 and the lower locking point strip 6 to ensure that the two can slide stably along the vertical direction.

[0038] As attached Figure 7 As shown, the transmission mechanism 9 also includes a secondary locking assembly, which includes a safety paddle 39, a safety card plate 40 and a square shaft safety plate 41;

[0039] The safety paddle 39 is rotatably mounted on the first rotating shaft 14, and the external lock core is cooperatively connected with the safety paddle 39 to drive the safety paddle 39 to rotate. The safety card plate 40 is rotatably mounted on the guide rod 22, and the square shaft safety plate 41 is linkedly mounted on the square shaft core 7 so that the square shaft core 7 and the square shaft safety plate 41 rotate synchronously. The safety paddle 39 is cooperatively connected with the safety card plate 40, and the safety paddle 39 drives the safety card plate 40 to rotate, so that the safety card plate 40 presses against the square shaft safety plate 41 to limit the square shaft safety plate 41 from rotating clockwise, thereby preventing the square shaft core 7 from rotating clockwise.

[0040] As attached Figure 7As shown, the safety paddle 39 is provided with a fifth paddle block 42, the safety card plate 40 is provided with a third movable groove 43 matched with the fifth paddle block 42, the square shaft safety plate 41 is provided with a locking protrusion 44, and the safety card plate 40 is provided with a locking step 45 for circumferentially limiting the locking protrusion 44 when it abuts against the locking protrusion 44. When the locking protrusion 44 on the square shaft safety plate 41 abuts against the locking step 45 on the safety card plate 40, the square shaft core 7 cannot rotate clockwise, that is, the external handle cannot be pressed down.

[0041] As attached Figure 8 As shown, the safety paddle 39 is provided with a first positioning rod 46, the skateboard paddle 11 is provided with a second positioning rod 47, the inner side of the lock housing 1 is provided with a mounting rod 48, a first torsion spring 49 is provided between the first positioning rod 46 and the mounting rod 48, a second torsion spring 50 is provided between the second positioning rod 47 and the mounting rod 48, and the safety paddle 39 is also provided with an arc hole 51 with the first rotating shaft 14 as the center, and the mounting rod 48 is penetrated through the arc hole 51, and the first torsion spring 49 and the second torsion spring 50 can form an auxiliary thrust for the safety paddle 39 and the skateboard paddle 11.

[0042] As attached Fig. 9 As shown, the transmission mechanism 9 also includes a beveled tongue paddle 52, which is linked with the beveled tongue 4 to drive the beveled tongue 4 to be locked into the lock housing 1. A third torsion spring 53 is also installed in the lock housing 1 to act on the beveled tongue 4 and cause the beveled tongue 4 to move outward.

[0043] As attached Fig. 9 As shown, a sliding piece 54 is provided at the inner end of the inclined tongue 4, and a reversing piece 55 is slidably provided in the lock housing 1 along a direction perpendicular to the movement direction of the inclined tongue 4. A spring 56 is also provided in the lock housing 1, and the spring 56 acts on the reversing piece 55 so that the reversing piece 55 abuts against the side of the sliding piece 54 away from the third torsion spring 53.

[0044] Instructions for use:

[0045] 1. The external handle is lifted up by 14-15° to drive the square shaft core 7 to rotate. When the square shaft core 7 rotates, it drives the square shaft return piece 10 to rotate. The square shaft return piece 10 drives the slide plate paddle 11 to rotate. The slide plate paddle 11 drives the locking slide plate 12 to drive the upper locking point strip 5 to slide upward by 15.5 mm. At the same time, when the upper locking slide plate 12 moves upward, it drives the main tongue 3 to rotate. When the main tongue 3 rotates, it drives the lower locking slide plate 13 to drive the lower locking point strip 6 to slide downward by 15.5 mm, so that the upper locking point strip 5 and the lower locking point strip 6 can achieve the function of two-way locking point use.

[0046] 2. The external lock core turns the safety paddle 39 clockwise to link the safety card plate 40, so that the safety card plate 40 and the square shaft safety plate 41, the safety paddle 39 and the lower locking slide plate 13 (are opposite) to achieve the locking function (the handle cannot be pressed down at this time).

[0047] 3. The external lock cylinder moves the safety paddle 39 in the opposite direction to return it and the safety card plate 40 to their original positions, and then the external handle is pressed down to unlock the door.

[0048] Reversing of the inclined tongue 4: push the reversing piece 55 to disengage it from the sliding piece 54, push the inclined tongue 4 outward to extend it out of the lock housing 1 and rotate it 180°, then press the inclined tongue 4 into the lock housing 1, and finally push the reversing piece 55 to the side of the sliding piece 54 away from the third torsion spring 53 to limit the inclined tongue 4.

Claims

1. A mechanical multi-locking point lock body, comprising a lock housing (1), a lock panel (2) mounted on the side of the lock housing (1), the lock panel (2) being provided with a main tongue (3), a slanted tongue (4), an upper lock point strip (5) and a lower lock point strip (6), the lock housing (1) being provided with a square shaft core (7) and a lock core hole (8) for mounting an external lock core, the lock housing (1) being provided with a transmission mechanism (9) connected between the square shaft core (7), the external lock core, the main tongue (3), the slanted tongue (4), the upper lock point strip (5) and the lower lock point strip (6); The main tongue (3) and the oblique tongue (4) move relative to the lock panel (2) and both have a locking position protruding relative to the lock panel (2) and an unlocking position retracted into the lock housing (1); the main tongue (3) can be driven to move between its locking position and unlocking position by an external lock core; Features: The transmission mechanism (9) comprises a primary locking assembly, and the primary locking assembly comprises a square shaft return plate (10), a slide plate paddle (11), an upper locking slide plate (12) and a lower locking slide plate (13); The square shaft return piece (10) is installed on the square shaft core (7) in a linkage manner so that the square shaft core (7) and the square shaft return piece (10) rotate synchronously. The slide plate paddle (11) is rotatably installed in the lock housing (1) via a first rotating shaft (14). The slide plate paddle (11) is matched and connected with the square shaft return piece (10). When the square shaft return piece (10) rotates, the slide plate paddle (11) is driven to rotate. The slide plate paddle (11) is connected to the locking point strip (5) via a locking slide plate (12). When the slide plate paddle (11) rotates, the upper locking slide plate (12) drives the upper locking point strip (5) to slide vertically; the inner end of the main tongue (3) is rotatably arranged in the lock housing (1) via a second rotating shaft (15); the upper locking slide plate (12) is linked to the main tongue (3) to drive the main tongue (3) to rotate; the main tongue (3) is connected to the lower locking point strip (6) via the lower locking slide plate (13); when the main tongue (3) rotates, the lower locking slide plate (13) drives the lower locking point strip (6) to slide vertically.

2. A mechanical multi-locking point lock body according to claim 1, characterized in that: The square shaft return plate (10) is provided with a first shift block (16), the slide plate (11) is provided with a first movable groove (17) for the first shift block (16) to extend into, the slide plate (11) is provided with a second shift block (18), the locking slide plate (12) is provided with a second movable groove (19) for the second shift block (18) to extend into, the locking slide plate (12) is also provided with a first upper guide hole (20) and a second upper guide hole (21) extending vertically, the inner side of the lock housing (1) is provided with a guide rod (22), the second rotating shaft (15) and the guide rod (22) are respectively matched with the first upper guide hole (20) and the second upper guide hole (21), the upper locking point strip (5) is provided with an upper plug-in protrusion (23), and the locking slide plate (12) is provided with an upper plug-in hole (24) for the upper plug-in protrusion (23) to be inserted into.

3. A mechanical multi-locking point lock body according to claim 2, characterized in that: The main tongue (3) is provided with a first movable hole (25), the upper locking slide plate (12) is provided with a third shift block (26) extending into the first movable hole (25), the main tongue (3) is also provided with a fourth shift block (27), the lower locking slide plate (13) is provided with a second movable hole (28) for the fourth shift block (27) to extend into, the second movable hole (28) extends in the horizontal direction, the lower locking slide plate (13) is also provided with a first lower guide hole (29) and a second lower guide hole (30) extending in the vertical direction, the second rotating shaft (15) and the guide rod (22) are respectively matched with the first lower guide hole (29) and the second lower guide hole (30), the lower locking point strip (6) is provided with a lower plugging protrusion (31), and the lower locking slide plate (13) is provided with a lower plugging hole (32) for the lower plugging protrusion (31) to be inserted.

4. A mechanical multi-locking point lock body according to claim 3, characterized in that: A first positioning recess (33) and a second positioning recess (34) are provided inside the first movable hole (25); when the locking slide plate (12) slides vertically, the third shift block (26) switches between the first positioning recess (33) and the second positioning recess (34).

5. A mechanical multi-locking point lock body according to claim 2, characterized in that: An upper guide bracket (35) and a lower guide bracket (36) are provided on the lock panel (2), and an upper guide channel (37) for the upper locking point strip (5) to pass through and a lower guide channel (38) for the lower locking point strip (6) to pass through are respectively provided on the upper guide bracket (35) and the lower guide bracket (36).

6. A mechanical multi-locking point lock body according to claim 4, characterized in that: The transmission mechanism (9) also includes a secondary locking assembly, which includes a safety paddle (39), a safety card plate (40) and a square shaft safety plate (41); The safety paddle (39) is rotatably mounted on the first rotating shaft (14); the external lock core is cooperatively connected with the safety paddle (39) to drive the safety paddle (39) to rotate; the safety card plate (40) is rotatably mounted on the guide rod (22); the square shaft safety plate (41) is linkedly mounted on the square shaft core (7) so that the square shaft core (7) and the square shaft safety plate (41) rotate synchronously; the safety paddle (39) is cooperatively connected with the safety card plate (40); the safety paddle (39) drives the safety card plate (40) to rotate, so that the safety card plate (40) is pressed against the square shaft safety plate (41) to limit the square shaft safety plate (41) from rotating clockwise, thereby preventing the square shaft core (7) from rotating clockwise.

7. A mechanical multi-locking point lock body according to claim 6, characterized in that: The safety paddle (39) is provided with a fifth paddle block (42), the safety card plate (40) is provided with a third movable groove (43) matched with the fifth paddle block (42), the square shaft safety plate (41) is provided with a locking protrusion (44), and the safety card plate (40) is provided with a locking step (45) near the square shaft safety plate (41) for constituting a circumferential limit to the locking protrusion (44) when abutting against the locking protrusion (44).

8. A mechanical multi-locking point lock body according to claim 7, characterized in that: The safety paddle (39) is provided with a first positioning rod (46), the sliding plate paddle (11) is provided with a second positioning rod (47), the inner side of the lock housing (1) is provided with a mounting rod (48), a first torsion spring (49) is provided between the first positioning rod (46) and the mounting rod (48), a second torsion spring (50) is provided between the second positioning rod (47) and the mounting rod (48), the safety paddle (39) is also provided with an arc-shaped hole (51) with the first rotating shaft (14) as the center, and the mounting rod (48) is inserted into the arc-shaped hole (51).

9. A mechanical multi-locking point lock body according to claim 1, characterized in that: The transmission mechanism (9) further comprises a slanted tongue paddle (52), wherein the slanted tongue paddle (52) and the slanted tongue (4) are linked to drive the slanted tongue (4) to lock into the lock housing (1), and a third torsion spring (53) is also installed in the lock housing (1) to act on the slanted tongue (4) to cause the slanted tongue (4) to have a tendency to move outward.

10. A mechanical multi-locking point lock body according to claim 9, characterized in that: A sliding piece (54) is provided at the inner end of the inclined tongue (4), a commutator piece (55) is slidably provided in the lock housing (1) in a direction perpendicular to the movement direction of the inclined tongue (4), and a spring (56) is also provided in the lock housing (1), and the spring (56) acts on the commutator piece (55) so that the commutator piece (55) abuts against a side of the sliding piece (54) away from the third torsion spring (53).

Images