CN220705410U - Oblique tongue linkage mechanism - Google Patents

Abstract

The utility model relates to an oblique tongue linkage mechanism, which is arranged on a lock body with a bottom plate assembly, wherein the bottom plate assembly is provided with a handle plectrum, a left transmission bar and an oblique tongue assembly, the bottom plate assembly comprises a bottom plate, the left transmission bar can vertically and reciprocally slide and is arranged on the bottom plate, the left transmission bar is provided with an upper bulge and a lower bulge, the handle plectrum is provided with a plectrum bulge, and the plectrum bulge extends to the left transmission bar and is abutted with the plectrum bulge at the upper end of the left transmission bar, and a straight tooth is arranged at the position of the handle plectrum close to the upper end of the handle plectrum; the inclined tongue linkage mechanism comprises a switching sheet and an inclined tongue poking sheet, the switching sheet is provided with a first meshing tooth and a second meshing tooth, and the inclined tongue poking sheet is rotatably arranged on the bottom plate and is provided with the meshing tooth; the first meshing teeth of the switching sheet are in meshing transmission connection with the straight teeth of the handle shifting sheet, and the second meshing teeth of the switching sheet are in transmission connection with the meshing teeth of the inclined tongue shifting sheet; the oblique tongue poking piece is provided with poking convex arms for the oblique tongue component to do back and forth linear motion. The utility model has the advantages of simple structure and compact structure.

Description

Oblique tongue linkage mechanism

Technical Field

The utility model relates to a latch linkage mechanism.

Background

The existing lock body comprises a latch linkage mechanism and a latch assembly, the latch assembly comprises a latch, a guide rod, a guide sheet and a latch bracket, the guide sheet is fixedly arranged in the lock body, the latch bracket can be slidably arranged in the lock body along the extension direction of the latch, the latch is fixedly connected to the first end of the guide rod, the second end of the guide rod penetrates through the guide sheet and then is connected with the latch bracket, a pressure spring penetrates through the guide rod to realize the reset of the latch, the pressure spring is in a compressed state in the latch retraction lock body, the length of the pressure spring is shorter, and in order to ensure enough spring force, the length of the pressure spring is generally longer, so that the space in the lock body is occupied, and other functional parts are not well arranged. There is therefore a need for further improvements.

Disclosure of Invention

The utility model aims to provide a latch linkage mechanism with compact structure.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the oblique tongue linkage mechanism is arranged on a lock body with a bottom plate assembly, the bottom plate assembly is provided with a handle plectrum, a left transmission bar and an oblique tongue assembly, the bottom plate assembly comprises a bottom plate, the left transmission bar can vertically and reciprocally slide on the bottom plate, the head end and the tail end of the left transmission bar are correspondingly provided with an upper bulge and a lower bulge, the handle plectrum is provided with a plectrum bulge along the radial outward extension, the plectrum bulge extends to the left transmission bar and is abutted with the plectrum bulge at the upper end of the left transmission bar, and the position of the handle plectrum close to the upper end of the handle plectrum is provided with straight teeth; the inclined tongue linkage mechanism comprises a switching sheet and an inclined tongue poking sheet, the switching sheet is provided with a first meshing tooth and a second meshing tooth, and the inclined tongue poking sheet is rotatably arranged on the bottom plate and is provided with the meshing tooth; the first meshing teeth of the switching sheet are in meshing transmission connection with the straight teeth of the handle shifting sheet, and the second meshing teeth of the switching sheet are in transmission connection with the meshing teeth of the inclined tongue shifting sheet; the oblique tongue poking piece is provided with poking convex arms for the oblique tongue component to do back and forth linear motion.

The utility model has the advantages of simple structure and compact structure.

Drawings

Fig. 1 is a schematic perspective view of a lock body according to an embodiment of the present utility model.

FIG. 2 is a schematic perspective view of a tongue assembly according to an embodiment of the present utility model.

FIG. 3 is a schematic cross-sectional view of a tongue assembly in accordance with an embodiment of the present utility model.

Detailed Description

As shown in fig. 1, a lock body has a latch assembly and a latch linkage mounted within the lock body.

As shown in fig. 2 and fig. 3, the latch assembly includes a latch 11, a guide rod 12, a guide plate 13 and a latch bracket 14, the guide plate 13 is fixedly disposed in the lock body, the latch bracket 14 is slidably mounted in the lock body along the extension and retraction direction of the latch 11, the latch 11 is fixedly connected to a first end of the guide rod 12, a second end of the guide rod 12 passes through the guide plate 13 and then is connected to the latch bracket 14, a tension spring 15 is disposed between the guide plate 13 and the latch bracket 14, one end of the tension spring 15 is connected to the guide plate 13, and the other end is connected to the latch bracket 14. By arranging the tension spring 15, in particular arranging the tension spring 15 externally, namely changing the original pressure spring into the tension spring 15, the length of the inclined tongue assembly is reduced, and a larger space is reserved for installing other parts of the lock body.

One end of the inclined tongue 11 is formed with a connection table 111, the connection table 111 is formed with a stepped hole 112 penetrating through front and rear end surfaces of the connection table 111, a first end of the guide rod 12 is formed with a connection part 121 with a smaller diameter, and an end part of the connection part 121 passes through the stepped hole 112 and then is formed with a blocking part 122 to prevent the guide rod 12 from being separated from the inclined tongue 11.

The middle of the inclined tongue 11 is provided with a slot 113 extending to the front end of the connecting table 111 from the inclined surface, and a boosting tongue 114 is arranged in the slot 113.

The lock body comprises a bottom plate 21 assembly and a cover plate, the bottom plate 21 assembly comprises a bottom plate 21 and a guide plate 22, and the guide plate 22 is fixed on a bending surface at one side of the bottom plate 21; the guide plate 22 is provided with a tongue via 221, and the tongue 11 passes through the tongue via 221; the bottom plate 21 and the cover plate are respectively provided with a bracket guide groove, and the upper and lower sides of the inclined tongue bracket 14 are respectively provided with a guide protrusion, and the guide protrusions are inserted into the corresponding bracket guide grooves.

The second end of the guide rod 12 is formed with an end cap; the inclined tongue bracket 14 comprises a front bracket 141 and a rear bracket 142, and the front bracket 141 and the rear bracket 142 are connected into a whole through a connecting plate to form a U shape; the guide rod 12 can slide back and forth relative to the inclined tongue bracket 14, the guide rod 12 is penetrated with a reversing spring 16, one end of the reversing spring 16 is abutted against the front carriage 141, and the other end is abutted against the inner end face of the end cap of the guide rod 12. When the inclined tongue 11 needs to be reversed, the rear carriage 142 is pulled to move towards the direction close to the guide plate 22, the reversing spring 16 is compressed, the inclined tongue 11 extends out of the lock body, the inclined tongue 11 rotates to the reverse position, the rear carriage 142 is released to reset under the action of the reversing spring 16, and the inclined tongue 11 is reversed.

Referring to fig. 1, a handle pulling piece 31 and a left transmission bar 32 are arranged on a bottom plate 21 assembly, the bottom plate 21 assembly comprises a bottom plate 21, the left transmission bar 32 can vertically and reciprocally slide on the bottom plate 21, an upper protrusion 321 and a lower protrusion 322 are correspondingly arranged at the front end and the rear end of the left transmission bar 32, a pulling piece protrusion 311 is arranged on the handle pulling piece 31 in a radial outward extending manner, the pulling piece protrusion 311 extends to the left transmission bar 32 to be abutted with the pulling piece protrusion 311 at the upper end of the pulling piece protrusion, and straight teeth are arranged at the position of the handle pulling piece 31 close to the upper end of the pulling piece protrusion; the inclined tongue linkage mechanism comprises a switching piece 41 and an inclined tongue poking piece 42, wherein the switching piece 41 is provided with a first meshing tooth and a second meshing tooth, and the inclined tongue poking piece 42 is rotatably arranged on the bottom plate 21 and is provided with the meshing tooth; the first engaging teeth of the adapter piece 41 are in engaged transmission connection with the straight teeth of the handle shifting piece 31, and the second engaging teeth of the adapter piece 41 are in engaged transmission connection with the engaging teeth of the inclined tongue shifting piece 42; the tongue shifter 42 has a shift cam 421 for linear back and forth movement of the tongue assembly.

The lock body is also provided with a back-locking linkage mechanism, and the back-locking linkage mechanism comprises an intermediate transmission piece 51 and an inclined transmission strip 52; the inclined transmission bar 52 is installed on the bottom plate 21 in an inclined sliding manner, and is correspondingly provided with upper teeth and lower teeth at the head end and the tail end, the middle transmission piece 51 is rotatably installed on the bottom plate 21 and is provided with a middle meshing part and a middle poking part, and the middle meshing part is provided with a plurality of middle teeth; the lower teeth are engaged with the counter locking cam teeth in driving engagement, the upper teeth are engaged with the middle teeth in driving engagement, and the middle toggle portion extends to the left drive bar 32 to abut the lower projection 322.

The lock body is also provided with a back-locking driving assembly, and the back-locking driving assembly comprises a shaft sleeve 61 and a back-locking spring 62; the shaft sleeve 61 is rotatably installed on the base plate 21, the outer circumferential surface of the shaft sleeve 61 is provided with anti-lock cam teeth, and the outer circumferential surface of the shaft sleeve 61 is also provided with a connecting part 121; one end of a counter lock spring 62 is sleeved on a carriage guide post fixedly mounted on the bottom plate 21 and the other end is sleeved on a connecting part 121 of the shaft sleeve 61.

The lock body is also provided with a lock cylinder 71, and the back and forth rotation of the toggle cam of the lock cylinder 71 can respectively push the lower bulge 322 of the left transmission bar 32 so as to enable the left transmission bar 32 to vertically slide upwards.

Through a plurality of driving pieces, especially adopt gear drive structure to carry out the transmission, not only stable in structure, the part is difficult to warp, and it is comparatively laborsaving to use to come to unblank, and its ability uses with the oblique tongue subassembly cooperation, makes the inner structure of its lock body more precise and simple, leaves the other parts of bigger space confession lock body and installs.

The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present utility model are all equivalent substitutions and are included in the scope of the present utility model.

Claims (6)

1. The oblique tongue linkage mechanism is arranged on a lock body with a bottom plate assembly, the bottom plate assembly is provided with a handle plectrum, a left transmission bar and an oblique tongue assembly, the bottom plate assembly comprises a bottom plate, the left transmission bar can vertically and reciprocally slide and is arranged on the bottom plate, and the oblique tongue linkage mechanism is characterized in that the head end and the tail end of the left transmission bar are correspondingly provided with an upper bulge and a lower bulge, the handle plectrum is provided with a plectrum bulge along the radial outward extension, the plectrum bulge extends to the left transmission bar to be in butt joint with the plectrum bulge at the upper end of the left transmission bar, and the position of the handle plectrum close to the upper end of the handle plectrum is provided with straight teeth; the inclined tongue linkage mechanism comprises a switching sheet and an inclined tongue poking sheet, the switching sheet is provided with a first meshing tooth and a second meshing tooth, and the inclined tongue poking sheet is rotatably arranged on the bottom plate and is provided with the meshing tooth; the first meshing teeth of the switching sheet are in meshing transmission connection with the straight teeth of the handle shifting sheet, and the second meshing teeth of the switching sheet are in transmission connection with the meshing teeth of the inclined tongue shifting sheet; the oblique tongue poking piece is provided with poking convex arms for the oblique tongue component to do back and forth linear motion.

2. The latch linkage of claim 1, wherein the lock body is further provided with a counter-lock linkage, the counter-lock linkage comprising an intermediate transmission member and a latch transmission bar; the inclined transmission bar can be obliquely and slidably arranged on the bottom plate, an upper tooth and a lower tooth are correspondingly arranged at the head end and the tail end, the middle transmission piece can be rotatably arranged on the bottom plate, a middle meshing part and a middle poking part are arranged on the middle transmission piece, and the middle meshing part is provided with a plurality of middle teeth; the lower teeth are in meshed transmission connection with the anti-lock cam teeth, the upper teeth are in meshed transmission connection with the middle teeth, and the middle poking part extends to the left transmission bar to be abutted with the lower bulge.

3. The latch linkage according to claim 2, wherein the lock body is further provided with a counter-lock drive assembly, the counter-lock drive assembly comprising a sleeve and a counter-lock spring; the shaft sleeve is rotatably arranged on the bottom plate, the outer peripheral surface of the shaft sleeve is provided with anti-lock cam teeth, and the outer peripheral surface of the shaft sleeve is also provided with a connecting part; one end of a back locking spring is sleeved on a carriage guide post fixedly arranged on the bottom plate, and the other end is sleeved on a connecting part of the shaft sleeve.

4. The latch linkage according to claim 3, wherein the lock body is further provided with a lock core, and the toggle cam of the lock core can respectively push the lower protrusion of the left transmission bar to vertically slide upwards.

5. The latch mechanism according to any one of claims 1 to 4, wherein the latch assembly comprises a latch, a guide bar, a guide plate and a latch bracket, the guide plate is fixedly arranged in the lock body, the latch bracket is slidably arranged in the lock body along the extension direction of the latch, the latch is fixedly connected to a first end of the guide bar, a second end of the guide bar passes through the guide plate and then is connected to the latch bracket, a tension spring is arranged between the guide plate and the latch bracket, and one end of the tension spring is connected to the guide plate and the other end is connected to the latch bracket.

6. The latch linkage of claim 5, wherein the second end of the guide bar is formed with an end cap; the oblique tongue bracket comprises a front carriage and a rear carriage, the front carriage and the rear carriage are connected into a whole through a connecting plate to form a U shape, and a poking convex arm of the oblique tongue poking piece extends into the front carriage and the rear carriage; the guide rod can slide back and forth relative to the inclined tongue bracket, the guide rod is penetrated with a reversing spring, one end of the reversing spring is abutted against the front carriage, and the other end of the reversing spring is abutted against the inner end face of the end cap of the guide rod.