Crank arm driving type pull rod lock

Abstract

The utility model provides a crank arm driving type pull rod lock, and belongs to the technical field of locks. Comprising a base, a handle, a linkage strip, a lock cylinder assembly, a bent arm mechanism, a connecting sliding plate, a connecting plate and an installing plate, the lock cylinder assembly is installed on the front face of the base, the linkage strip is located on the side face of the base, the connecting sliding plate is installed on the linkage strip, the handle is located on the front face of the base, and the bent arm mechanism is located between the handle and the base and comprises a support, a bent arm and a torsional spring. The pull rod lock has the advantages of being convenient to install, long in sliding stroke, labor-saving in use and the like.

Description

Technical Field

[0001] The present application relates to a flex-arm driven pull rod lock, belonging to the technical field of locks. Background Art

[0002] The pull rod lock is a common facility in chassis, cabinets, etc., and is mostly used in conjunction with a pull rod system. Common pull rod locks generally include pull rods, fixing plates, cover plates and other components, which have complex structures and are cumbersome to operate. In order to overcome this defect, the industry has proposed a series of improvements, such as CN214246931U, which installs a bracket on the corresponding box or cabinet with fasteners such as bolts, sets a track on the bracket, and assembles the slider in the track of the bracket. One end of the handle is hinged on the bracket, and the other end is a grip end that can be pulled or swung. The handle and the slider are connected by a connecting plate, a flex arm, etc., to achieve a pull-and-pull type pull rod lock.

[0003] However, during the application process, we found that: the above-mentioned device needs to punch holes on the cabinet or box to achieve installation and fixation. For some equipment, it may destroy the structural stability of the cabinet or box and affect the use of the equipment; the adjustment range of the pull rod lock is limited, and the operating space is small. For some application environments, there is a problem of large installation area and small opening range; although the convenience of opening is solved, the resetting effect is not good. After opening the box or cabinet, the closing process needs to be completed manually.

[0004] In view of this, this application is filed. Utility Model Content

[0005] In view of this, the present application provides a flex-arm driven pull rod lock, which can not only achieve convenient opening and quick installation, but also achieve resetting during the operation process.

[0006] Specifically, the present application is implemented through the following scheme:

[0007] A flex-arm driven pull rod lock comprises a base, a handle, a linkage bar, a lock core assembly, a flex-arm mechanism, a connecting slide plate, a connecting plate and a mounting plate.

[0008] The end of the base is provided with a first screw and a stop pin, and the stop pin is sleeved with a first spring on the side facing the base. The mounting plate is located on the back side of the base, and a crabapple-shaped buckle is provided on it. The first screw, the stop pin, and the first spring cooperate with the buckle to position and install the base on the mounting plate.

[0009] The base is provided with a lock core mounting hole, an elongated through groove and a sliding groove.

[0010] The lock core assembly is installed on the front side of the base through the lock core installation hole.

[0011] The connecting plate is installed on the back of the base by bolts, and a matching end matching the shape of the lock core assembly is provided at the lower end of the connecting plate, so that the connecting plate can be lifted and lowered as the lock core assembly rotates. A third spring is sleeved on the upper end of the connecting plate, and a clamping block is provided at a position corresponding to the upper end of the connecting end on the back side of the base. The third spring is located between the clamping block and the connecting plate to realize the reset of the connecting plate.

[0012] The connecting plate is provided with a cross-slot pan head combination screw, which passes through the connecting plate and the long round through slot, and is connected with a latch on the front side of the base, and the latch moves synchronously with the connecting plate.

[0013] A baffle is provided on the handle corresponding to the latch, and the baffle is locked with the latch to achieve the locking of the handle and the base.

[0014] The back side of the base is provided with a linkage bar, on which a connecting slide plate is installed.

[0015] A flex arm mechanism is arranged at the front side of the base at the position corresponding to the slide groove, and the flex arm mechanism includes a bracket, a flex arm and a torsion spring. The bracket is fixed to the side of the handle facing the base, and a first pin hole and a second pin hole are arranged on the bracket. The first pin hole is loaded with a first knurled pin, and the connecting slide plate is connected to the bracket through the first knurled pin, and the connecting slide plate is located on the back side of the base, and the second knurled pin is loaded into the second pin hole. One end of the flex arm mechanism is connected to the bracket through the second knurled pin, and the other end of the flex arm mechanism is connected to the base through the third knurled pin, so that the flex arm is located between the bracket and the base, and the torsion spring is sleeved on the third knurled pin.

[0016] In the above scheme, a buckle position is set on the mounting plate. When the base is installed, the first screw enters the buckle position first. At this time, the stop pin is in a contracted state under the extrusion of the first spring and the mounting plate. The sliding base causes the first screw to move along the buckle position. The first spring is gradually released, and the stop pin falls into the buckle position. No other fasteners are required to complete the sliding positioning installation. The third spring and the card block form a reset unit of the connecting plate. The lock core assembly is installed in cooperation with the connecting plate. The lock core assembly is rotated to push the connecting plate to move upward. The bolt and the cross-slot pan head combination screw move with the connecting plate relative to the baffle. The restraining effect of the handle is released and it can be easily popped up. The bolt is lifted and lowered in the long round through groove. The aperture of the groove constitutes the opening angle range of the handle, and the third spring on the upper end of the connecting plate contracts and deforms to provide a certain displacement space for the connecting plate. The lock core assembly is rotated in the opposite direction, and the third spring recovers the deformation to drive the connecting plate to reset; when the restraining effect of the handle is released, the handle is pulled, and the handle drives the connecting slide plate to move along the slide groove through the bracket, driving the linkage bar connected to the connecting plate to move accordingly. At this time, the bent arm and torsion spring form the reset elements of the handle, the bracket and the linkage bar, giving a greater reset force, and the slide groove and the bent arm constitute the displacement space of the base. The cooperation of the above-mentioned displacement space realizes a wider sliding stroke of the base along the mounting plate, thereby increasing the controllable displacement space of the base.

[0017] Further, as a preference:

[0018] The buckles are arranged in three groups, respectively realizing multiple positioning installations of the base and the mounting plate.

[0019] The buckle position includes a middle hole and two end holes, the middle hole is connected to the end holes, and the end holes are located on both sides of the middle hole to form a crabapple-shaped buckle position, and the diameter of the middle hole matches the outer diameter of the first screw and the stop pin, and the diameter of the end hole is smaller than that of the first screw and the stop pin, giving the buckle position a structure with a variable diameter. More preferably, the stop pin also includes a fixing sleeve, the outer diameter of the fixing sleeve is larger than the diameter of the middle hole, so that the stop pin forms a T-shaped stop pin. During installation, the first screw enters the middle hole first. At this time, the outer end of the stop pin rests on the mounting plate, and the first spring between the inner end of the stop pin and the base is in a compressed state, pushing the base, and the first screw slides into the end hole along the middle hole. At the same time, the stop pin gradually slides above the middle hole until the stop pin is no longer squeezed by the mounting plate, and the first spring recovers, pushing the stop pin into the middle hole. At this time, the first screw is clamped in the end hole and will not fall off, completing the connection between the base and the mounting plate; when it needs to be removed, push the base in the opposite direction, the aperture relationship between the fixing sleeve and the middle hole, and the connection relationship between the end hole and the middle hole, prompt the horizontal force of the base to be converted into the force that pushes the stop pin upward, until the first screw returns to the middle hole, and the base can be removed from the mounting plate. The entire process does not require on-site drilling to complete the installation and removal of the base.

[0020] A fixing seat is arranged on the base, and a third knurled pin is installed on the fixing seat to realize the connection between the flexure arm and the base, and a movable end of the torsion spring is inserted into the fixing hole, and cooperates with the third knurled pin to realize the relative fixed installation of one end of the torsion spring, and the other movable end of the torsion spring is against the inner side of the handle. More preferably, a card slot is arranged on the bracket, and the card slot is arranged corresponding to the fixing seat. When the handle is pressed, the fixing seat is embedded in the card slot to ensure that the handle is fully pressed down.

[0021] A connecting block is fixed to the side of the linkage bar, and the connecting slide is fixed to the connecting block to achieve the connection between the connecting slide and the linkage bar. More preferably, the connecting block is fixed to the linkage bar through a locking nut.

[0022] The end of the linkage bar is fixed to the box or cabinet by rivets, and the riveting is firm and not loose.

[0023] The base is provided with a lock core mounting hole, and the lock core assembly is mounted in the lock core mounting hole. More preferably, a dust cover is also provided at the lock core mounting hole, and the dust cover is connected to the base shaft through a second screw, and the other end of the dust cover covers the lock core assembly to prevent dust from falling on the lock core assembly and avoid interference of the use environment on the working state of the lock core assembly. The second screw is sleeved with a second spring, and the dust cover is provided with a gasket, which matches the size of the lock core assembly to prevent mechanical damage to the lock core assembly caused by the opening and closing of the dust cover.

[0024] The first screw and the second screw are both hexagon socket pan head screws.

[0025] In the above solution, the mating end of the connecting plate is a conical structure, and the mating end of the conical structure abuts against or snaps onto the lock core assembly to achieve linkage with the lock core assembly.

[0026] The above-mentioned pull rod lock can be quickly installed with the help of the buckle, stop pin and the first screw. After the installation of all parts is completed, the lock core assembly is rotated, the latch is disengaged from the baffle, and the handle can be easily popped up, and its pop-up angle can reach 50 degrees. The cooperation of the flex arm, torsion spring and bracket gives the connecting slide plate a greater sliding force in the slide groove, ensuring that the connecting slide plate moves smoothly. When the base is 295mm long, the linkage bar is 366mm long and the connecting slide plate is 73mm long, its sliding stroke can reach 27-28mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the front structure of this application;

[0028] Figure 2 This is a schematic diagram of the back structure of this application;

[0029] Figure 3 for Figure 1 Sectional view in the middle AA direction;

[0030] Figure 4 This is a schematic diagram of the split structure of this application;

[0031] Figure 5 It is a structural schematic diagram of the base part in this application;

[0032] Figure 6 A schematic diagram of the back structure of the base in this application;

[0033] Figure 7 This is a schematic diagram of the split structure of the base part in this application;

[0034] Figure 8 It is a schematic diagram of the structure of the mounting plate in this application.

[0035] Numbers in the figure: 1. Base; 11. Lock core mounting hole; 12. Block; 13. Slide; 14. First hexagon socket pan head screw; 15. Stop pin; 16. Fixing sleeve; 17. First spring; 18. Mounting seat; 19. Long round through groove; 2. Handle; 21. Cross countersunk screw; 22. Baffle; 3. Linkage bar; 31. Connecting block; 32. Rivet; 33. Lock nut; 4. Lock core assembly; 41. Dust cover; 42. Gasket; 43. Second hexagon socket pan head screw; 44. Second spring; 45. Key; 5. Flex arm mechanism; 51. Bracket; 52. First pin hole; 53. Second pin hole; 54. Slot; 55. First knurled pin; 56. Second knurled pin; 57. The third knurled pin; 58. torsion spring; 59. flex arm; 6. connecting slide plate; 61. connecting boss; 62. screw; 7. connecting plate; 71. mating end; 72. connecting end; 73. third spring; 74. oblong hole; 75. bolt; 8. mounting plate; 81. first buckle position; 811. middle hole; 812. end hole; 82. second buckle position; 83. third buckle position; 9. latch; 91. cross recessed pan head combination screw; 92. buckle end. DETAILED DESCRIPTION Example

[0036] This embodiment is a flex arm driven pull rod lock, combined with Figures 1 to 4 , including a base 1, a handle 2, a linkage bar 3, a lock core assembly 4, a flex arm mechanism 5, a connecting slide 6, a connecting plate 7, a mounting plate 8 and a latch 9.

[0037] Combination Figure 2 , Figure 8 A set of first hexagon socket pan head screws 14 and stop pins 15 are respectively arranged at the upper, middle and lower positions on the back side of the base 1, and three buckle positions are arranged at corresponding positions on the mounting plate 8: a first buckle position 81, a second buckle position 82, and a third buckle position 83, which correspond to the upper, middle and lower positions of the base 1 respectively. During installation, the first hexagon socket pan head screw 14 is pushed into the middle hole 811. Since the diameter of the end hole 812 is smaller than the outer diameters of the first hexagon socket pan head screw 14 and the stop pin 15, at this time, the stop pin 15 is squeezed by the mounting plate 8 and the base 1, and the first spring 17 is in a compressed state, and the stop pin 15 is located above the end hole 812; the base 1 is pushed along the surface of the mounting plate 8, and the first hexagon socket pan head screw 14 slides from the middle hole 811 into the end hole 812 on one side of its travel direction, and the corresponding stop pin 15 slides from the previous end hole into the middle hole 811. Since the middle hole 811 matches the outer diameter of the stop pin 15, the stop pin 15 enters the middle hole 811 under the recovery deformation of the first spring 17; the same assembly relationship also occurs at other buckle positions to complete the buckle-type assembly of the base 1 and the mounting plate 8.

[0038] Combination Figure 2The upper and lower ends of the linkage bar 3 are riveted with rivets 32 respectively, and a connecting block 31 is assembled on its side with a locking nut 33. The connecting slide plate 6 is fixed to the connecting block 31 by a screw 61, so that the connecting slide plate 6 is located on the side of the linkage bar 3, and a protruding connecting boss 61 is set on the side of the connecting slide plate 6 facing the base 1, and a pin hole (not marked in the figure) is set horizontally through the upper edge of the connecting boss 61.

[0039] Combination Figure 4 , Figure 7 The middle part of the front side of the base 1 is a concave installation space for accommodating the handle 2, the arm bending mechanism 5 and other components. A lock core installation hole 11 is arranged at the lower position, and an elongated round groove 19 is arranged above the lock core installation hole 11. A slide groove 13 is arranged above the elongated round groove 19. On the back side of the base 1, a block 12 is arranged above the elongated round groove 19.

[0040] Combination Figure 3 , Figure 4 , Figure 7 When the lock core assembly 4 is inserted into the lock core mounting hole 11, an oblong hole 74 is provided on the connecting plate 7, and the bolt 75 passes through the oblong hole 74 to install the connecting plate 7 on the back side of the base 1. The lower end of the connecting plate 7 is the mating end 71, and the upper end is the connecting end 72. The mating end 71 is a conical structure, and the mating end 71 of the conical structure is stuck on the lock core assembly 4. When the lock core assembly 4 is rotated with the key 45, the mating end 71 is pushed to rise. A third spring 73 is mounted on the connecting end 72, and the other end of the third spring 73 abuts against or is fixed on the block 12. When the connecting plate 7 rises due to the rise of the mating end 71, the third spring 73 is compressed between the connecting end 72 and the block 12. When the lock core assembly 4 and the mating end 71 no longer act, the third spring 73 recovers its deformation and pushes the connecting plate 7 down.

[0041] A group of cross recessed pan head combination screws 91 are installed on the connecting plate 7, and the cross recessed pan head combination screws 91 pass through the long round through slot 19. A latch 9 is installed on the front of the base 1, and the lower end of the latch 9 is a snap-on end 92. During the lifting and lowering process of the connecting plate 7, the latch 9 rises and falls synchronously with the connecting plate 7.

[0042] At the lower end of the handle 2, a baffle 22 is fixedly installed on its inner wall by a cross countersunk screw 21. The baffle 22 is arranged in cooperation with the latch 9. When the baffle 22 is engaged with the buckle end 92, the handle 2 and the base 1 are in a locked state and the handle 2 cannot be moved. When the latch 9 moves up along the long round through groove 19 to the buckle end 92 and disengages from the baffle 22, the handle 2 bounces up relative to the base 1. When the third spring 73 is reset, the elastic action pushes the connecting plate 7 and the latch 9 downward; when the handle 2 is buckled again, the inclined surface at the top of the baffle 22 cooperates with the buckle end 92 below the latch 9, so that the latch 9 moves up again, and the cross-grooved pan head combination screw 91 drives the connecting plate 7 to move up together, and the lock core assembly 4 and the matching end 71 at the lower end of the connecting plate 7 are released. At this time, the lock core assembly 4 can be rotated to complete the locking of the key 45.

[0043] At the upper end of the handle 2, a bracket 51 is fixed to the inner wall thereof by bolts (not marked in the figure), and the bracket 51 is fixed to the inner wall of the handle 2 by bolts (not marked in the figure). Figure 3 , Figure 4 The bracket 51 is of irregular shape. The bracket 51 is provided with a first pin hole 52, a second pin hole 53 and a card slot 54 from top to bottom. The first pin hole 52 is circular and matches the pin hole on the connecting boss 61. After the connecting boss 61 passes through the slide slot 13, the bracket 51 and the connecting boss 61 are connected at the first pin hole 52 by the first knurled pin 55; the second pin hole 53 is an oblong slot hole, and the opening of the card slot 54 faces the base 1. Pin holes are respectively provided at the upper and lower ends of the flex arm 59. The upper end of the flex arm 59 is connected to the bracket 51 at the second pin hole 53 through the second knurled pin 56. The lower end of the flex arm 59 is installed at the fixed seat 18 provided on the base 1 through the third knurled pin 57, so that the flex arm 59 is located between the bracket 51 and the base 1; a torsion spring 58 is sleeved on the third knurled pin 57, and one of the two free ends of the torsion spring 58 abuts against the base 1, and the other free end abuts against the flex arm 59. The bracket 51 , the torsion spring 58 , the flex arm 59 and the corresponding knurled pin constitute the flex arm mechanism 5 .

[0044] When the handle 2 pops up, the handle 2 is pulled, and the handle 2 drives the connecting slide 6 to slide along the back side of the base 1 through the bracket 51, and the bent arm 59 swings relative to the third knurled pin 57; the handle 2 is pressed down, and the connecting slide 6 moves in the opposite direction, and at the same time, the protruding fixing seat 18 is embedded in the card slot 54, ensuring that the handle 2 is completely inserted into the concave installation space.

[0045] A mounting hole can also be set above the lock core mounting hole 11. After the second spring 44 is mounted on the second hexagon socket pan head screw 43, the dust cover 41 is axially mounted on the base 1 after passing through the mounting hole from the back side of the base 1, so that the dust cover 41 can cover the lock core assembly 4 and the lock core mounting hole 11; a gasket 42 is set at the inner side of the dust cover 41 at a position corresponding to the lock core assembly 4. The lower end of the dust cover 41 is a free end, and the upper end, i.e., the second hexagon socket pan head screw 43, forms a rotation point. When the dust cover 41 is rotated, the lock core assembly 4 is exposed, which is convenient for inserting the key; otherwise, the lock core assembly 4 is covered on its inner side.

Claims

1. A flex-arm driven pull rod lock, characterized in that: It includes a base, a handle, a linkage bar, a lock core assembly, a flex arm mechanism, a connecting slide, a connecting plate and a mounting plate. The end of the base is provided with a screw and a stop pin, and the stop pin is sleeved with a first spring on one side facing the base. The mounting plate is located on the back side of the base, and a buckle is provided on it. The screw, the stop pin, and the first spring cooperate with the buckle to position and install the base on the mounting plate. The base is provided with a lock core mounting hole, an elongated through groove and a sliding groove. The lock core assembly is installed on the front side of the base through the lock core installation hole. The connecting plate is installed on the back of the base by bolts, and a matching end matching the shape of the lock core assembly is provided at the lower end of the connecting plate, so that the connecting plate can be lifted and lowered as the lock core assembly rotates. A third spring is sleeved on the upper end of the connecting plate, and a clamping block is provided at a position corresponding to the upper end of the connecting end on the back side of the base. The third spring is located between the clamping block and the connecting plate to realize the reset of the connecting plate. The connecting plate is provided with a cross-slot pan head combination screw, which passes through the connecting plate and the long round through slot, and is connected with a latch on the front side of the base, and the latch moves synchronously with the connecting plate. A baffle is provided on the handle corresponding to the latch, and the baffle is locked with the latch to achieve the locking of the handle and the base. The back side of the base is provided with a linkage bar, on which a connecting slide plate is installed. A flex arm mechanism is arranged at the front side of the base at the position corresponding to the slide groove, and the flex arm mechanism includes a bracket, a flex arm and a torsion spring. The bracket is fixed to the side of the handle facing the base, and a first pin hole and a second pin hole are arranged on the bracket. The first pin hole is loaded with a first knurled pin, and the connecting slide plate is connected to the bracket through the first knurled pin, and the connecting slide plate is located on the back side of the base, and the second knurled pin is loaded into the second pin hole. One end of the flex arm mechanism is connected to the bracket through the second knurled pin, and the other end of the flex arm mechanism is connected to the base through the third knurled pin, so that the flex arm is located between the bracket and the base, and the torsion spring is sleeved on the third knurled pin.

2. A flex-arm driven pull rod lock according to claim 1, characterized in that: The buckles are arranged in three groups, respectively realizing multiple positioning installations of the base and the mounting plate.

3. A flex-arm driven pull rod lock according to claim 2, characterized in that: The buckle position includes a middle hole and two end holes, the middle hole is connected to the end holes, and the end holes are located on both sides of the middle hole to form a crabapple-shaped buckle position, and the hole diameter of the middle hole matches the outer diameter of the first screw and the stop pin, and the hole diameter of the end hole is smaller than that of the first screw and the stop pin.

4. A flex-arm driven pull rod lock according to claim 3, characterized in that: The stop pin is provided with a fixing sleeve, and the outer diameter of the fixing sleeve is larger than the diameter of the middle hole.

5. The flex-arm driven pull rod lock according to claim 1, characterized in that: A fixing seat is arranged on the base, and a third knurled pin is installed on the fixing seat to realize the connection between the flex arm and the base.

6. A flex-arm driven pull rod lock according to claim 5, characterized in that: The bracket is provided with a card slot, and the card slot is arranged corresponding to the fixing seat, so that the fixing seat can be received in the card slot when the handle is closed.

7. The flex-arm driven pull rod lock according to claim 1, characterized in that: A connecting block is fixed on the side of the linkage bar, and the connecting slide plate is fixed to the connecting block.

8. The flex-arm driven pull rod lock according to claim 1, characterized in that: The mating end of the connecting plate is a conical structure, and the mating end of the conical structure abuts against the lock core assembly to achieve linkage with the lock core assembly.

9. The flex-arm driven pull rod lock according to claim 1, characterized in that: The lock core assembly is provided with a dust cover, one end of the dust cover is connected to the base shaft, and the other end covers the top of the lock core assembly.

10. The flex-arm driven pull rod lock according to claim 9, characterized in that: A gasket is arranged on the side of the dust cover facing the lock core assembly, and the gasket matches the size of the lock core assembly.

Images