Gear transmission type pull rod lock

Abstract

The utility model provides a gear transmission type pull rod lock, and belongs to the technical field of locks. Comprising a base, a handle, a lock cylinder assembly, a linkage strip, a plunger latch and a gear, a lock hole is formed in the lower end of the base, the lock cylinder assembly is installed at the lock hole, a protective cover is arranged above the lock cylinder assembly, one end of the protective cover is in shaft connection with the base through an elastic cotter pin, and an elastic steel ball is arranged at the other end of the protective cover; the elastic steel balls are matched with the buckling grooves, so that the protective cover and the base are locked; the tail end of the lock cylinder assembly is connected with a plunger latch, and the plunger latch is provided with a lock hook. And the handle is matched with the lock latch and the lock hook, so that the handle is locked on the base. The pull rod lock has the advantages of being convenient to install, stable in operation, waterproof, dustproof and the like.

Description

Technical Field

[0001] The present application relates to a gear transmission type 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 usually needs to be formed by horizontal wire drawing during processing, which is difficult to process, which is very disadvantageous for the pull rod lock that is easy to damage and needs to be replaced frequently; and when it is used, it is necessary to punch holes in 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 operable space is small. For some application environments, there is a problem of large installation area and small opening range; especially outdoor chassis and cabinets often face the test of rain and humid environment, but the current pull rod lock has unsatisfactory waterproof sealing effect. The lock core assembly, handles and other parts are extremely easy to seep water, which will not only interfere with the normal operation of the components and affect the use, but may also seep into the box along the pull rod lock; and the current gear-driven pull rod lock replaces the flex-arm transmission pull rod lock. Although the convenience of opening is solved, the reset 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 gear-driven pull rod lock, which can not only achieve convenient opening and quick installation and resetting without punching, but also has the advantages of precise positioning and low probability of deformation of the linkage bar.

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

[0007] A gear transmission type pull rod lock, comprising a base, a handle, a lock core assembly, a linkage bar, a lock latch and a gear.

[0008] The lower end of the base is provided with a lock hole, and a lock core assembly is installed at the lock hole.

[0009] A protective cover is arranged above the lock core assembly, one end of the protective cover is connected to the base shaft through an elastic cotter pin, and the other end is provided with an elastic steel ball, and a buckling groove is arranged on the base corresponding to the elastic steel ball, and the elastic steel ball cooperates with the buckling groove to realize the locking of the protective cover and the base;

[0010] The end of the lock core assembly is connected with a lock latch, and the lock latch is provided with a lock hook;

[0011] A gear and a corresponding gear plate are arranged in the base, and the gear is meshed and connected with the gear plate;

[0012] The gear is provided with a pin hole, and the corresponding handle is also provided with a pin hole, the gear passes through the base, and the two sets of pin holes cooperate with the knurled pins to realize the installation of the handle on the base;

[0013] The knurled pin is sleeved with a torsion spring, and the free ends of the torsion spring are respectively pressed between the handle and the base to achieve the reset of the handle;

[0014] The other end of the handle is located above the lock core assembly and cooperates with the latch hook to lock the handle on the base;

[0015] The linkage bar is integrally formed with two limit blocks, which are fixed to the base, and the linkage bar is installed on the side of the base;

[0016] A linkage block is fixed on the linkage bar, and the linkage block is embedded on the gear plate.

[0017] In the above scheme, the protective cover is installed above the lock core assembly, and is positioned between the protective cover and the base in the form of elastic steel balls, which not only facilitates the installation of the protective cover, but also effectively protects and dust-proofs the lock core assembly; the lock hook set in the latch and the handle are engaged with each other, which can realize the unlocking and locking of the movable end / holding end of the handle, and the spring set corresponding to the latch can reset the latch when the key is released; the one-piece limit block setting of the linkage bar does not require drilling holes in the door panel during installation, which facilitates installation and stabilizes the structure and operating state of the linkage bar to prevent it from twisting, shaking and deforming. The above aspects cooperate with the gears and gear plates to well realize the operation of the linkage bar.

[0018] Further, as a preference:

[0019] The latch is connected with a spring, and the other end of the spring is fixed in the base by a screw. The arrangement of the spring can realize the reset of the latch when no force is applied.

[0020] The handle is provided with a fixing hole, and the corresponding base is provided with an external lock buckle, which passes through the fixing hole and protrudes above the handle to achieve mechanical locking of the handle. More preferably, the base is provided with a protrusion, and the external lock buckle is installed on the base through the protrusion. The setting of the protrusion facilitates the installation of the external lock buckle, and when the external lock buckle is not needed, it can be removed. The external lock buckle is provided with an O-ring. The external lock buckle is a part that is prone to water seepage, and an O-ring is provided on it for sealing to achieve a waterproof effect.

[0021] The lock core assembly is provided with a sealing gasket. Although the lock core assembly is protected and waterproof by the protective cover, a sealing gasket is installed between the dust cover and the lock core assembly, which not only achieves sealing, but also provides good buffering to prevent damage to the lock core assembly when the protective cover falls.

[0022] The portion where the handle and the gear are connected is provided with a wave pad, which can achieve a good sealing effect on the connection portion for handles and gears of irregular shapes.

[0023] The end of the gear provided with the pin hole is covered with an O-ring. Since this connecting end of the handle is a part that is prone to water seepage, sealing and waterproofing operations are very necessary.

[0024] The gear plate is provided with a slot, and the linkage block is embedded in the slot to achieve the connection between the gear plate and the linkage block.

[0025] A sealing gasket is fixed at the bottom of the base. The base is the largest contact part of the entire pull rod lock, and it is waterproof and sealed to prevent rainwater from penetrating into the base and affecting the operation of gears, gear plates, latches, lock core components, springs, etc.

[0026] The above-mentioned device performs waterproof sealing at multiple positions, which can well realize the waterproofness of the pull rod lock. When used in outdoor chassis and cabinets, there will be no problems of easy damage and frequent replacement of components due to water seepage; when unlocking, first pull the protective cover, the elastic steel ball at the bottom of the protective cover will disengage from the snap-fit ​​groove, insert and turn the key, the lock bolt rotates with the lock core assembly, and its lock hook disengages from the holding end of the handle. Under the action of the torsion spring at the connecting end, it can automatically pop out of the base, turn the handle, and the gear will rotate with it through the knurled pin. The meshing action of the gear and the gear plate and the inlay fixing action of the card slot and the linkage block make the linkage block rise and fall with the rotation of the gear. Since the linkage block is fixed on the linkage bar, the linkage bar is driven by the linkage block to move synchronously.

[0027] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0030] Figure 2 It is a side structural schematic diagram of this application;

[0031] Figure 3 This is a schematic diagram of the back structure of this application;

[0032] Figure 4 It is a schematic diagram of the side section structure of this application;

[0033] Figure 5 for Figure 4 Cross-section in the middle BB direction;

[0034] Figure 6 This is a schematic diagram of the split structure of this application;

[0035] Figure 7 for Figure 4 A partial enlarged view of area A in the middle.

[0036] Numbers in the figure: 1. Base; 11. Lock core mounting hole; 12. Snap-fit ​​groove; 2. Handle; 21. Connecting end; 211. First pin hole; 22. Grip end; 23. Fixing hole; 24. Knurled pin; 25. Torsion spring; 26. First gasket; 27. Matching block; 3. Lock core assembly; 31. Protective cover; 32. Mounting seat; 33. Second gasket; 34. Elastic steel ball; 35. Spring; 36. Screw ; 37. Elastic cotter pin; 4. Linkage bar; 41. Limit block; 42. Shoulder screw; 43. Linkage block; 5. Gear; 51. Second pin hole; 52. Gear plate; 521. Slot; 522. Transmission tooth; 53. First O-ring; 54. Front bottom cover; 6. External lock buckle; 61. Protrusion; 62. Second O-ring; 7. Latch; 71. Lock hook; 72. Rear bottom cover; 8. Sealing gasket. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the technical solutions in the embodiments of this application will be further described in detail below in conjunction with the drawings in the embodiments of this utility model. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit the technical solutions of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this utility model.

[0038] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and should not be construed as limitations on the present technical solution.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0040] Figure 1 A diagram showing this embodiment.

[0041] A gear transmission type pull rod lock comprises a base 1, a handle 2, a lock core assembly 3, a linkage bar 4, a lock latch 7 and a gear 5.

[0042] Combination Figure 6 A locking hole 11 is arranged at the lower end of the base 1 , and a mounting seat 32 is arranged on the base 1 above the locking hole 11 .

[0043] The lock core assembly 3 is embedded in the lock hole 11, and a rear bottom cover 72 is installed at a corresponding position on the back side of the base 1. The latch 7 is installed on the rear bottom cover 72. A hook-shaped lock hook 71 is provided at the upper end of the latch 7, and the lower end is connected to the spring 35. The spring 35 is fixed to the base 1 by a screw 36.

[0044] Combination Figure 7 The protective cover 31 covers the lock core assembly 3 in the lock hole 11, and its upper end is connected to the mounting seat 32 axis through an elastic cotter pin 37. An elastic steel ball 34 is provided at the lower end, and a buckling groove 12 is provided on the base 1 corresponding to the elastic steel ball 34, so that when the protective cover 31 is pressed down, the elastic steel ball 34 is locked with the buckling groove 12, thereby realizing the locking of the protective cover 31 and the base 1.

[0045] A first sealing gasket 33 is provided between the lock core assembly 3 and the protective cover 31 to waterproof the entrance of the lock core assembly 3 .

[0046] The handle 2 includes a connecting end 21 and a holding end 22. The connecting end 21 is provided with a first pin hole 211, and a corresponding through groove is provided on the base 1. A front bottom cover 54 is installed on the back side of the base 1, and a gear plate 52 is installed on the front bottom cover 54. The gear 5 is pinched and installed on the gear plate 52. The gear 5 protrudes upward toward one side of the through groove to form a gear shaft. A second pin hole 51 is provided on the gear shaft. The second pin hole 51 cooperates with the first pin hole 211. The knurled pin 24 passes through the first pin hole 211 and the second pin hole 51 to realize the connection between the connecting end 21 of the handle 1 and the axis of the gear 5; a matching block 27 is provided on the inner side of the holding end 22. When the handle 2 is pressed, the matching block 27 is buckled with the lock hook 71.

[0047] A torsion spring 25 is sleeved on the knurled pin 24 , and two ends of the torsion spring 25 respectively abut against the base 1 and the handle 2 to achieve the reset connection of the handle 1 .

[0048] A first O-ring 53 is sleeved on the gear shaft of the gear 5 , and a wave pad is installed at the location where the first pin hole 211 is set at the connection end 21 of the handle 2 to achieve waterproofing of the connection end 21 of the handle 2 .

[0049] The gear plate 52 is provided with a slot 521 and a transmission tooth 522 matched with the gear 5 .

[0050] A limit block 41 is provided at each end of the linkage bar 4, and a shoulder screw 42 is provided on the limit block 41, and the linkage bar 4 is fixed to the base 1 through the shoulder screw 42. A linkage block 43 is also fixed to the linkage bar 4, and the linkage block 43 is inserted into the card slot 521 to realize the connection between the linkage bar 43 and the front bottom cover 54 and the gear plate 52. When the handle 1 is turned, the gear 5 rotates synchronously with the knurled pin 24, and the gear 5 is meshed with the transmission tooth 522 to realize the lifting and lowering of the gear plate 52, thereby driving the linkage bar 4 to lift and lower through the linkage block 43.

[0051] In the above scheme, the protective cover 31 is installed above the lock core assembly 3, and is positioned between the protective cover 31 and the base 1 in the form of an elastic steel ball 34, which not only facilitates the installation of the protective cover 31, but also effectively protects and dust-proofs the lock core assembly 3; the lock hook 71 provided on the lock latch 7 and the matching block 27 are engaged with each other, so that the unlocking and locking of the handle movable end / holding end 22 can be realized, and the spring 35 corresponding to the lock latch 7 can reset the lock latch 7 when the key is released; the limiting block 41 integrally formed with the linkage bar 4 is set, and when installing, there is no need to drill a hole in the door panel for installation, which facilitates installation and stabilizes the structure and operating state of the linkage bar 4 to prevent it from twisting, shaking and deformation. The above aspects cooperate with the gear 5 and the gear plate 52 to well realize the operation of the linkage bar.

[0052] As an alternative solution: the handle 1 is further provided with a fixing hole 23 , and the base 1 is correspondingly provided with an external lock buckle 6 , which passes through the fixing hole 23 and protrudes above the handle 2 , thereby realizing mechanical locking of the handle 2 .

[0053] Preferably, a protrusion 61 is provided on the base 1, and the external lock buckle 6 is installed on the base 1 through the protrusion 61. The provision of the protrusion 61 facilitates the installation of the external lock buckle 6, and when the external lock buckle 6 is not needed, the protrusion 61 can be removed.

[0054] A second O-ring 62 is sleeved on the external lock buckle 6. The external lock buckle 6 is a part that is easy to seep water, and an O-ring is arranged on it for sealing to achieve a waterproof effect.

[0055] As an alternative solution: a sealing gasket 8 is fixed to the bottom of the base 1. The base 1 serves as the largest contact point for the entire pull rod lock, and is waterproof and sealed to prevent rainwater from penetrating into the base and affecting the operation of the gear 5, gear plate 52, latch 7, lock core assembly 3, spring 35, etc.

[0056] The above device is waterproof and sealed at multiple positions, which can well realize the waterproofness of the pull rod lock. When used in outdoor chassis and cabinets, there will be no problems of easy damage and frequent replacement of components caused by water seepage; when unlocking, first pull the protective cover 31, the elastic steel ball 34 at the bottom of the protective cover 31 disengages from the buckling groove 12, insert and turn the key, the latch 7 rotates with the lock core assembly 3, and its lock hook 71 disengages from the matching block 27. Under the action of the torsion spring 25 of the connecting end 21, the holding end 22 automatically pops out of the base 1, and the handle 2 is turned, and the knurled pin 24 drives the gear 5 to rotate accordingly, and the gear 5 is meshed with the transmission tooth 522, and the card slot 521 is embedded and fixed with the linkage block 43. In this way, when the gear 5 rotates, the gear plate 52 moves linearly, driving the linkage block 43 to move linearly accordingly, and the linkage block 43 is fixed to the linkage bar 4, so that the linkage bar 4 is driven by the linkage block 43 to move synchronously.

[0057] The above device uses the elastic steel ball 34 and the protective cover 31 to achieve the sealing and waterproofing of the lock core assembly 3. The linkage bar 4 and the linkage block 43 are integrally formed to ensure stable positioning and prevent deformation caused by shaking of the linkage bar 4.

[0058] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A gear transmission type pull rod lock, characterized in that: Including base, handle, lock core assembly, linkage bar, latch and gear, The lower end of the base is provided with a lock hole, and a lock core assembly is installed at the lock hole. A protective cover is arranged above the lock core assembly, one end of the protective cover is connected to the base shaft through an elastic cotter pin, and the other end is provided with an elastic steel ball, and a buckling groove is arranged on the base corresponding to the elastic steel ball, and the elastic steel ball cooperates with the buckling groove to realize the locking of the protective cover and the base; The end of the lock core assembly is connected with a lock latch, and the lock latch is provided with a lock hook; A gear and a corresponding gear plate are arranged in the base, and the gear is meshed and connected with the gear plate; The gear is provided with a pin hole, and the corresponding handle is also provided with a pin hole, the gear passes through the base, and the two sets of pin holes cooperate with the knurled pins to realize the installation of the handle on the base; The knurled pin is sleeved with a torsion spring, and the free ends of the torsion spring are respectively pressed between the handle and the base to achieve the reset of the handle; The other end of the handle is located above the lock core assembly and cooperates with the latch hook to lock the handle on the base; The linkage bar is integrally formed with two limit blocks, which are fixed to the base, and the linkage bar is installed on the side of the base; A linkage block is fixed on the linkage bar, and the linkage block is embedded on the gear plate.

2. A gear transmission type pull rod lock according to claim 1, characterized in that: The latch is connected with a spring, and the other end of the spring is fixed in the base by a screw.

3. The gear transmission type pull rod lock according to claim 1, characterized in that: The handle is provided with a fixing hole, and the corresponding base is provided with an external lock buckle, which passes through the fixing hole and protrudes above the handle to achieve mechanical locking of the handle.

4. A gear transmission type drawbar lock according to claim 3, characterized in that: The base is provided with a protrusion, and the external lock buckle is installed on the base through the protrusion.

5. The gear transmission type drawbar lock according to claim 3, characterized in that: The external lock buckle is sleeved with an O-type sealing ring.

6. The gear transmission type drawbar lock according to claim 1, characterized in that: A sealing gasket is sleeved on the lock core assembly.

7. The gear transmission type drawbar lock according to claim 1, characterized in that: The portion where the handle is connected to the gear is sleeved with a wave pad.

8. The gear transmission type drawbar lock according to claim 1, characterized in that: The end of the gear provided with the pin hole is sleeved with an O-type sealing ring.

9. The gear transmission type drawbar lock according to claim 1, characterized in that: The gear plate is provided with a slot, and the linkage block is embedded in the slot to achieve the connection between the gear plate and the linkage block.

10. The gear transmission type drawbar lock according to claim 1, characterized in that: A sealing gasket is fixed on the bottom of the base.

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