A compression mechanism for a connecting rod lock

Abstract

The utility model relates to a kind of compression mechanism of connecting rod lock, it is to solve the technical problem of the lock catch structure design of the lack of linkage swing bar and operation swing bar between the transmission bar and rack which are vertically crossed and set 90 degrees in the existing similar products between upper and lower.The transmission bar and the rack in fixed seat are vertically crossed and set 90 degrees between upper and lower in the shell of the compression mechanism, rack side tooth and the gear of fixed seat inner gear assembly are engaged, and rack is stretched out;Its gist is that the gear of gear assembly is engaged with the side tooth of transmission bar in shell above rack, one end of transmission bar is stretched out shell and is hinged with the short pin shaft of one end in swing bar assembly, the other end of swing bar assembly is hinged with the bending of lock catch by long pin shaft, gasket is respectively equipped in the both sides of hinged place, lock catch is L-shaped, one end of lock catch is hinged and fixed on the hinged seat of two protrusions of transmission bar place outside fixed seat by two sides rivet pin, the other end of lock catch is located above transmission bar and is stretched out shell and fixed seat forward.

Description

Technical Field

[0001] This utility model relates to a linkage lock, specifically a clamping mechanism for a linkage lock. Background Technology

[0002] Linkage locks are specialized locks that achieve the locking of metal cabinet doors through a formed linkage mechanism. Their core structure consists of a longitudinally extending flat linkage assembly and a lock cylinder mechanism, and includes upper and lower pin linkage devices, a spring return system, and other mechanisms. These locks are commonly used for anti-theft locking of metal panel cabinet frames such as server racks, electrical distribution boxes, and sheet metal filing cabinets. The locking of the door frame positioning components is achieved by rotating the key, which drives the linkage. Some existing similar products use a lower locking gear and an upper locking rack and latch arranged vertically at 90 degrees to achieve linkage, such as Chinese patent ZL No. 03221493.6, authorized on May 12, 2004, with the utility model name "Linkage Pressing Door Lock". However, the above-mentioned products are rarely used in linkage locks, lacking a linkage lever and a locking mechanism for operating the lever, resulting in higher production costs and less convenient use. Summary of the Invention

[0003] To overcome the above shortcomings, the purpose of this utility model is to provide a clamping mechanism for a linkage lock, thereby solving the technical problem that existing similar products, which have a 90-degree vertically intersecting transmission bar and rack, lack a linkage lever and a locking structure for the operating lever, resulting in high production costs and inconvenience in use. This objective is achieved through the following technical solution.

[0004] A clamping mechanism for a linkage lock includes a housing on top of a fixed base, a transmission bar inside the housing, and a rack on one side of the fixed base. The transmission bar and rack are vertically intersecting at 90-degree angles. One side of the rack's teeth meshes with a gear in a gear assembly. One end of the rack extends out of the fixed base. The gear assembly is located in a gear cavity on one side between the housing and the fixed base. The bottom of the fixed base is mounted on one side edge of a door panel. The key structural design feature is that the gear in the gear assembly simultaneously meshes with one side of the transmission bar inside the housing above the rack. One end of the transmission bar extends out of the housing and is hinged to a short pin at one end of a rocker arm assembly. The other end of the rocker arm assembly is hinged to a bent section of the latch via a long pin. Washers are provided on both sides of the hinge. The latch is L-shaped, with one end hinged to two protruding hinge seats on the outer side of the fixed base at the transmission bar via two rivet pins. The other end of the latch is located above the transmission bar and extends forward out of the housing and the fixed base. Thus, the clamping mechanism is installed on the metal cabinet door through the bottom of the fixed seat. One end of the rack extending out of the fixed seat is connected to the top and bottom rods or steel bolts. When the extended end of the latch is pulled up or down, the latch drives the transmission bar to move back and forth through the rocker arm assembly to extend or retract from the outer shell. At the same time, the transmission bar drives the rack to extend or retract into the fixed seat through the gear assembly. Thus, the rack drives the top and bottom rods or steel bolts to move back and forth, thereby achieving locking or unlocking.

[0005] The transmission bar is L-shaped, and its position corresponds to the L-shaped hole in the outer casing. The teeth on one side of the curved bottom of the transmission bar mesh with the gears in the gear assembly inside the casing. One end of the curved top of the transmission bar is hinged to one end of the swing arm assembly via a short pin. This structure facilitates stable movement of the transmission bar and its linkage with the latch and swing arm assembly.

[0006] The rocker arm assembly includes symmetrically spaced connecting pieces on both sides. The latch is a plate piece whose protruding end is integrally formed with the L-shaped side plates on both sides and is stamped into shape. One end of each of the two connecting pieces of the rocker arm assembly is hinged to one end of the transmission bar via a short pin, and the other end of each of the two connecting pieces of the rocker arm assembly is hinged to the bent part of the latch via a long pin. The above is a specific structural embodiment of the rocker arm assembly and the latch.

[0007] The latch protruding end above the drive bar is provided with a rubber pad fixed to the latch end by screws. When the latch is in the locked state, the rubber pad abuts against the edge of the door frame on the opposite side of the door panel or the edge of the door panel on the other side. Thus, the latch can be used for both the movement of the rack and pinion and for further pressing the door panel.

[0008] The central square section of the gear assembly's drive shaft is integrated with three superimposed gears—a first gear, a second gear, and a third gear—with aligned tooth edges. Both ends of the drive shaft are fixed to a mounting base in the gear cavity and a housing, respectively. The first gear meshes with one side of the transmission rack inside the housing, and the third gear meshes with one side of the rack inside the mounting base. The above describes a specific structural embodiment of the gear assembly. The number of gears depends on the height between the upper and lower transmission teeth and the rack. The gears can also be cylindrical gear rollers.

[0009] The racks are symmetrically arranged on both sides of the gear assembly inside the fixed base. One end of the rack extends out from both sides of the fixed base, and the other end of the rack meshes with the gears of the gear assembly. This structure facilitates the application of top and bottom rod type linkage locks.

[0010] The rocker arm assembly is a linkage assembly with two or more connecting rods. When the locking buckle moves the transmission bar through the linkage assembly, the linkage assembly locks the buckle and fixes it to the outer shell. The end of the locking buckle extends out of the outer shell above the fixing seat.

[0011] This utility model has a reasonable and simple structural design, is convenient to produce, assemble and use, has low production cost and various structural forms; in particular, it is convenient to press the door panel against the door frame or the other door panel simultaneously in the locked state through the latch; it is suitable for use as a pressing mechanism of linkage locks, as well as for structural improvements of similar products. Attached Figure Description

[0012] Figure 1 This is an exploded structural diagram of an embodiment of this utility model.

[0013] Figure 2 yes Figure 1 The diagram shows the assembled 3D structure, with the dotted lines representing the internal structure of the outer shell and the mounting base.

[0014] Figure 3 yes Figure 1 The diagram shows a top view of the structure, with sections AA and BB shown.

[0015] Figure 4 yes Figure 3 A schematic diagram of the AA cross-sectional structure.

[0016] Figure 5 yes Figure 3 Schematic diagram of the BB cross-section structure.

[0017] Attached figures and their names: 1. Housing, 2. Gear assembly, 201. Drive shaft, 202. First gear, 203. Second gear, 204. Third gear, 3. Fixed seat, 301. Hinge seat, 4. Rack, 5. Drive bar, 6. Rubber pad, 7. Rocker arm assembly, 701. Short pin, 8. Rivet pin, 9. Washer, 10. Lock, 11. Long pin. Implementation

[0018] The structure and use of this utility model will now be further described with reference to the accompanying drawings. Figures 1-5 As shown, the clamping mechanism has a housing 1 on top of the fixed base 3, a transmission bar 5 inside the housing, and a rack 4 on one side inside the fixed base. The transmission bar and the rack are arranged vertically at 90 degrees. One side of the rack's teeth meshes with the gear of the gear assembly 2. One end of the rack extends out of the fixed base. The gear assembly is located in the gear cavity on one side between the housing and the fixed base. The bottom of the fixed base is installed on one side edge of the door panel. The gear of the aforementioned gear assembly also meshes with one side of the teeth of the transmission bar inside the housing above the rack. One end of the transmission bar extends out of the housing and is hinged to a short pin 701 at one end inside the rocker arm assembly. The other end of the rocker arm assembly is hinged to the bend of the latch 10 via a long pin 11. Washers 9 are provided on both sides of the hinge. The latch is L-shaped. One end of the latch is hinged to two protruding hinge seats 301 on the outer fixed base of the transmission bar via two rivet pins 8. The other end of the latch is located above the transmission bar and extends forward out of the housing and the fixed base. The transmission bar is L-shaped, and the transmission bar is set inside the housing with the L-shaped hole corresponding to the housing. The toothed end on one side of the bottom bend of the transmission bar meshes with the gear of the gear assembly inside the housing. One end of the top bend of the transmission bar is hinged and fixed to one end of the rocker arm assembly through a short pin.

[0019] The aforementioned rocker arm assembly includes symmetrically spaced connecting pieces on both sides. The latch is a plate piece whose protruding end is integrally formed with the L-shaped side plates on both sides and is stamped into shape. One end of each of the two connecting pieces of the rocker arm assembly is hinged to one end of the transmission bar via a short pin, and the other end of each of the two connecting pieces is hinged to the bent part of the latch via a long pin. The protruding end of the latch above the transmission bar is provided with a rubber pad 6 fixed to the end of the latch by screws. When the latch is in the locked state, the rubber pad abuts against the edge of the door frame on the opposite side of the door panel or the edge of the door panel on the other side.

[0020] The middle square section of the drive shaft 201 of the aforementioned gear assembly is connected to the first gear 202, the second gear 203, and the third gear 204, which are stacked and aligned with each other. The two ends of the drive shaft are respectively fixed to the fixed seat and the outer shell at the gear cavity. The first gear meshes with one side of the toothed edge of the transmission bar inside the outer shell, and the third gear meshes with one side of the toothed edge of the rack inside the fixed seat.

[0021] This clamping mechanism connects to the lock or top and bottom rods via a rack and pinion to achieve clamping and locking. The functions of this clamping mechanism are as follows: 1. Through a combination of rack and pinion, the clamping mechanism converts the vertical extension / retraction of the lock linkage into horizontal transmission of the drive bar. 2. The drive bar drives the rocker arm assembly and the latch in a linkage mechanism, enabling the latch to swing up and down. The latch's rubber pads prevent hard friction between metal parts and also provide a certain degree of tolerance. 3. When the drive bar reaches its lowest point, it forms a dead position, preventing the latch from opening automatically (i.e., the hinge point between the drive bar and one end of the rocker arm assembly via a short pin is located on both sides below the hinge point between the other end of the rocker arm assembly and the latch, so that when the latch is subjected to an upward force, it will not drive the rack to move, thus achieving locking and preventing the latch from opening automatically).

[0022] Based on the above structural features, racks can also be symmetrically arranged on both sides of the gear assembly inside the fixed base. One end of the rack extends out from both sides of the fixed base, and the other end of the rack meshes with the gears of the gear assembly. The racks extending out from both sides of the fixed base are connected to the corresponding top and bottom rods. Alternatively, the rocker arm assembly can be a linkage assembly with two or more connecting rods. When the locking buckle moves the transmission bar through the linkage assembly, the linkage assembly locks the buckle and fixes it to the outer shell, with the end of the buckle extending out from the upper outer shell of the fixed base.

Claims

1. A clamping mechanism for a linkage lock, wherein the clamping mechanism has a housing (1) on top of a fixed base (3), a transmission bar (5) inside the housing, a rack (4) on one side inside the fixed base, the transmission bar and the rack being arranged perpendicularly at 90 degrees, one side of the rack meshing with the gear of a gear assembly (2), one end of the rack extending out of the fixed base, the gear assembly being disposed in a gear cavity on one side between the housing and the fixed base, and the bottom of the fixed base being mounted on one side edge of a door panel; characterized in that The gear of the gear assembly (2) meshes with the toothed edge of the transmission bar (5) inside the outer shell (1) above the rack (4). One end of the transmission bar extends out of the outer shell and is hinged to the short pin (701) at one end of the rocker arm assembly (7). The other end of the rocker arm assembly is hinged to the bend of the buckle (10) through the long pin (11). Washers (9) are provided on both sides of the hinge. The buckle is L-shaped. One end of the buckle is hinged to two protruding hinge seats (301) on the outer fixed seat of the transmission bar through the two side rivets (8). The other end of the buckle is located above the transmission bar and extends forward out of the outer shell and the fixed seat.

2. The clamping mechanism of the linkage lock according to claim 1, characterized in that... The transmission bar (5) is L-shaped. The transmission bar is set inside the housing with an L-shaped hole corresponding to the housing (1). The toothed end on one side of the bottom bend of the transmission bar meshes with the gear of the gear assembly (2) inside the housing. One end of the top bend of the transmission bar is hinged and fixed to one end of the swing arm assembly (7) through a short pin (701).

3. The clamping mechanism of the linkage lock according to claim 1, characterized in that... The swing arm assembly (7) includes symmetrical connecting pieces on both sides with a spacing between them. The latch (10) is a plate piece that is stamped and formed by connecting the extended end to the L-shaped side plates on both sides. One end of the two connecting pieces of the swing arm assembly is hinged to one end of the transmission bar (5) through a short pin (701), and the other end of the two connecting pieces of the swing arm assembly is hinged to the bend of the latch (10) through a long pin (11).

4. The clamping mechanism of the linkage lock according to claim 1, characterized in that... The latch (10) above the transmission bar (5) has a rubber pad (6) fixed to the end of the latch by screws. When the latch is in the locked state, the rubber pad abuts against the edge of the door frame on the opposite side of the door panel or the edge of the door panel on the other side.

5. The clamping mechanism of the linkage lock according to claim 1, characterized in that... The transmission shaft (201) of the gear assembly (2) is connected in the middle square section to the first gear (202), the second gear (203), and the third gear (204) which are stacked and aligned. The two ends of the transmission shaft are fixed to the fixed seat (3) and the outer shell (1) at the gear cavity, respectively. The first gear meshes with the toothed edge of the transmission bar (5) inside the outer shell, and the third gear meshes with the toothed edge of the rack (4) inside the fixed seat.

6. The clamping mechanism of the linkage lock according to claim 1, characterized in that... The rack (4) is symmetrically arranged on both sides of the gear assembly (2) inside the fixed seat (3). One end of the rack extends out of both sides of the fixed seat, and the other end of the rack meshes with the gear of the gear assembly.

7. The clamping mechanism of the linkage lock according to claim 1, characterized in that... The swing arm assembly (7) is a linkage assembly with two or more connecting rods. When the lock (10) drives the transmission bar (5) to move through the linkage assembly, the linkage assembly drives the lock to lock and fix it to the outer shell (1), and the end of the lock extends out of the outer shell above the fixing seat (3).

Images