A handle lock

Abstract

This utility model relates to a handle lock, including an upper insert rod, a lower insert rod, a transmission box, and a handle. The transmission box includes a shell, an upper rack, a lower rack, and a gear. Both the upper and lower racks mesh with the gear. The upper rack is connected to the bottom end of the upper insert rod, and the lower rack is connected to the top end of the lower insert rod. The handle is used to drive the gear to rotate forward and backward. The shell includes a faceplate and a cover plate assembled together. The faceplate includes a panel, a top plate, a bottom plate, two side plates, two upper inclined plates, and two lower inclined plates. The bottom surface of the upper rack is a lower inclined surface that engages with one of the lower inclined plates, and the top surface of the lower rack is an upper inclined surface that engages with one of the upper inclined plates. In the unlocked state, the lower inclined surface of the upper rack abuts against the lower inclined plate it engages with, and the upper inclined surface of the lower rack abuts against the upper inclined plate it engages with. This utility model has the advantages of simple structure, reasonable design, compact structure, low noise during unlocking, and small shell size of the transmission box, which helps to reduce production costs.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, and in particular to a handle lock. Background Technology

[0002] Handle locks are typically installed on the doors of cold storage rooms, test chambers, steam rooms, ovens, and rice steamers. When in use, turning the handle causes two rods to extend or retract simultaneously from the top and bottom of the door, unlocking or locking the door against the frame. Currently, most handle locks on the market use a transmission box to move the rods. The transmission box contains gears that rotate synchronously with the handle and racks connected to the two rods. The gears mesh with the racks of each rod, so that turning the handle causes the gears to rotate in both directions, allowing both rods to extend and retract simultaneously. To prevent the ends of the racks furthest from the rods from colliding with the outer shell of the transmission box and generating significant noise when unlocking, the internal space of the outer shell is generally made large. This ensures that, in the unlocked state, there is space between the top of the rack connected to one rod and the inner top surface of the outer shell, and between the bottom of the rack connected to the other rod and the inner bottom surface of the outer shell, preventing collisions. This type of handle lock structure is not compact, the transmission box shell is large, and production costs are high. Utility Model Content

[0003] The purpose of this utility model is to provide a handle lock that has the advantages of simple structure, reasonable design, compact structure, low noise when unlocking, small outer shell of transmission box, and reduced production cost.

[0004] The technical solution of this utility model is implemented as follows: a handle lock includes an upper insert rod, a lower insert rod, a transmission box, and a handle; the transmission box includes a housing and an upper rack, a lower rack, and a gear installed inside the housing; the upper rack and the lower rack mesh with the gear, the upper rack is connected to the bottom end of the upper insert rod, and the lower rack is connected to the top end of the lower insert rod, so that the rotation of the gear can drive the upper insert rod and the lower insert rod to move in opposite directions or in opposite directions; the handle is used to drive the gear to rotate forward and backward; in particular, the housing includes a face shell and a cover plate assembled together; the face shell covers... The device includes a panel and a top plate, a bottom plate, two side plates, two upper inclined plates, and two lower inclined plates connected to the panel. The two upper inclined plates are located between the two sides of the top plate and the two side plates, and the two lower inclined plates are located between the two sides of the bottom plate and the two side plates. The bottom surface of the upper rack is a lower inclined surface that engages with one of the lower inclined plates, and the top surface of the lower rack is an upper inclined surface that engages with one of the upper inclined plates. In the unlocked state, the lower inclined surface of the upper rack rests against the lower inclined plate that engages with it, and the upper inclined surface of the lower rack rests against the upper inclined plate that engages with it.

[0005] In this design, during unlocking, the lower inclined surface of the upper rack slightly impacts the lower inclined plate that matches it, and the upper inclined surface of the lower rack slightly impacts the upper inclined plate that matches it. This design allows the bottom surface of the upper rack and the top surface of the lower rack to make oblique contact with the outer shell, resulting in less noise. After unlocking, the lower inclined surface of the upper rack and the upper inclined surface of the lower rack are in close contact with the outer shell, resulting in a very compact structure and a smaller outer shell volume, which helps to reduce production costs.

[0006] The outer shell is constructed from bent metal plates. This gives the upper and lower inclined plates a certain degree of elastic deformation capability, further reducing the noise generated by the contact between the bottom surface of the upper rack, the top surface of the lower rack, and the outer shell.

[0007] The included angles formed by each upper inclined plate and the top plate, and each side plate are preferably within the range of 40° to 50°; the included angles formed by each lower inclined plate and the bottom plate, and each side plate are preferably within the range of 40° to 50°.

[0008] To allow the upper and lower racks to move vertically during use and to make the structure more compact, both the upper and lower racks are sandwiched between the cover plate and the panel of the face shell. Each rack includes a rack section, a connecting section, and a guide section. A gear is positioned between the rack sections of the upper and lower racks. The rack sections of both racks have teeth that mesh with the gear on the side facing the gear. The side of the rack section of the upper rack facing away from the gear is in contact with the inner surface of one side plate, and the side of the rack section of the lower rack facing away from the gear is in contact with the inner surface of the other side plate. The inner surfaces are fitted together; the bottom surface of the rack portion of the upper rack is the lower inclined surface, and the top end of the rack portion of the upper rack is connected to the bottom end of its own guide portion through a connecting portion; the top surface of the rack portion of the lower rack is the upper inclined surface, and the bottom end of the rack portion of the lower rack is connected to the top end of its own guide portion through a connecting portion; the top plate and bottom plate of the faceplate each have a guide hole formed, the guide portion of the upper rack passes through the guide hole of the top plate, and the guide portion of the upper rack is connected to the bottom end of the upper insert rod; the guide portion of the lower rack passes through the guide hole of the bottom plate, and the guide portion of the lower rack is connected to the top end of the lower insert rod.

[0009] Furthermore, a connector is provided at the top of the upper insertion rod and the bottom of the lower insertion rod; the axis of the connector is parallel to the axis of the upper insertion rod and the lower insertion rod, and the connector is provided with a first stud section and a second stud section along its axis; the top of the upper insertion rod and the bottom of the lower insertion rod are each threadedly connected to the first stud section of their own connector, and the second stud section of each connector is threadedly connected to a lock head.

[0010] Furthermore, this solution also includes an upper locking seat that engages with the lock head of the upper insertion rod and a lower locking seat that engages with the lock head of the lower insertion rod; each of the upper and lower locking seats includes a fixed seat and a movable seat; the fixed seat is provided with a first toothed section and an elongated hole, and the movable seat is provided with a second toothed section; the length direction of the elongated hole, the arrangement direction of the teeth of the first toothed section, and the arrangement direction of the teeth of the second toothed section are all perpendicular to the axial direction of the upper and lower insertion rods; the second toothed section of the movable seat of each of the upper and lower locking seats meshes with the first toothed section of the fixed seat, and the movable seat and the fixed seat are fixed together by a screw passing through the elongated hole; each of the movable seats of the upper and lower locking seats is provided with a lock hole for the lock head to pass through.

[0011] Furthermore, the handle drives the gear to rotate via a drive mechanism; the drive mechanism includes a front mounting base, a main shaft, a drive shaft, and a rear mounting base; the front mounting base has a shaft hole, and the wall of the shaft hole has a limiting groove arranged around the axis of the shaft hole; the main shaft is rotatably inserted into the shaft hole, and a limiting block is provided on the main shaft extending into the limiting groove; the handle is fixedly connected to one end of the main shaft; the drive shaft passes through the gear, and the drive shaft and the gear are synchronously connected; one end of the drive shaft is synchronously connected to the other end of the main shaft, and the other end of the drive shaft is rotatably mounted on the rear mounting base.

[0012] Furthermore, a positioning mechanism is provided between the handle and the front mounting base; the positioning mechanism includes a ball on the handle and an upper locking slot and an unlocking positioning slot on the front mounting base; the upper locking slot and the unlocking positioning slot are arranged around the axis of the main shaft, and the ball can be switched to be embedded in the upper locking slot or the unlocking positioning slot.

[0013] The advantages of this utility model are: simple structure, reasonable design, compact structure, low noise during unlocking, small outer shell of transmission box, which helps to reduce production costs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an embodiment.

[0015] Figure 2 This is a schematic diagram of the disassembly and assembly structure of the transmission box in an embodiment.

[0016] Figure 3 This is a schematic diagram of the shell structure in an embodiment.

[0017] Figure 4 This is a schematic diagram of the disassembly and assembly structure of the handle, front mounting base, and spindle in an embodiment.

[0018] Figure 5 This is a schematic diagram of the assembly structure of the front mounting base and the spindle in an embodiment.

[0019] Figure 6 This is a schematic diagram of the disassembly and assembly structure of the locking seat in an embodiment.

[0020] Figure 7 This is a schematic diagram of the disassembly and assembly structure of the connector and lock head in an embodiment.

[0021] Explanation of reference numerals in the attached drawings: 1-Upper insert rod; 2-Lower insert rod; 3-Transmission box; 31-Outer shell; 32-Face shell; 321-Panel; 322-Top plate; 323-Bottom plate; 324-Side plate; 325-Upper inclined plate; 326-Lower inclined plate; 327-Guide hole; 33-Cover plate; 34-Upper rack; 341-Lower inclined surface; 35-Lower rack; 351-Upper inclined surface; 36-Rack section; 37-Connecting part; 38-Guide part; 39-Gear; 4-Handle; 5-Connection Components; 51-First stud section; 52-Second stud section; 6-Lock head; 71-Upper lock seat; 72-Lower lock seat; 73-Fixed seat; 74-Moving seat; 75-First toothed section; 76-Elongated hole; 77-Second toothed section; 78-Lock hole; 8-Drive mechanism; 81-Front mounting seat; 811-Shaft hole; 812-Limiting groove; 813-Upper locking positioning groove; 814-Unlocking positioning groove; 82-Main shaft; 821-Limiting block; 83-Drive shaft; 84-Rear mounting seat. Detailed Implementation

[0022] like Figure 1 , Figure 2 , Figure 3As shown, a handle lock of this embodiment includes an upper insert rod 1, a lower insert rod 2, a transmission box 3, and a handle 4. The transmission box 3 includes a housing 31 and an upper rack 34, a lower rack 35, and a gear 39 installed inside the housing 31. The upper rack 34 and the lower rack 35 both mesh with the gear 39. The upper rack 34 is connected to the bottom end of the upper insert rod 1, and the lower rack 35 is connected to the top end of the lower insert rod 2, so that the rotation of the gear 39 can drive the upper insert rod 1 and the lower insert rod 2 to move in opposite directions or in opposite directions. The handle 4 is used to drive the gear 39 to rotate in both directions. The housing 31 includes a face shell 32 and a cover plate 33 assembled together. The face shell 32 includes a panel 321 and a top plate 322 connected to the panel 321. The system comprises a base plate 323, two side plates 324, two upper inclined plates 325, and two lower inclined plates 326. The two upper inclined plates 325 are located between the two sides of the top plate 322 and the two side plates 324, respectively, and the two lower inclined plates 326 are located between the two sides of the base plate 323 and the two side plates 324, respectively. The bottom surface of the upper rack 34 is a lower inclined surface 341 that engages with one of the lower inclined plates 326, and the top surface of the lower rack 35 is an upper inclined surface 351 that engages with one of the upper inclined plates 325. In the unlocked state, the lower inclined surface 341 of the upper rack 34 rests against the lower inclined plate 326 that it engages with, and the upper inclined surface 351 of the lower rack 35 rests against the upper inclined plate 325 that it engages with. This design allows the bottom surface of the upper rack 34 and the top surface of the lower rack 35 to make oblique contact with the outer casing 31 during use, resulting in less noise. After unlocking, the lower oblique surface 341 of the upper rack 34 and the upper oblique surface 351 of the lower rack 35 are in close contact with the outer casing 31, making the structure very compact and reducing the size of the outer casing 31, which helps to reduce production costs.

[0023] like Figure 3 As shown, the faceplate 32 is constructed from bent metal plates. This gives the upper inclined plate 325 and the lower inclined plate 326 a certain degree of elastic deformation capability, further reducing the noise generated by the contact between the bottom surface of the upper rack 34, the top surface of the lower rack 35, and the outer shell 31.

[0024] To make the structure of this handle lock more reasonable, such as Figure 3 As shown, the included angles formed by each upper inclined plate 325 with the top plate 322 and each side plate 324 are all 45°; the included angles formed by each lower inclined plate 326 with the bottom plate 323 and each side plate 324 are all 45°.

[0025] To allow the upper rack 34 and lower rack 35 to move vertically during use and to make the handle lock structure more compact, such as Figure 2 , Figure 3As shown, the upper rack 34 and the lower rack 35 are both sandwiched between the cover plate 33 and the panel 321 of the face shell 32; each of the upper rack 34 and the lower rack 35 includes a rack portion 36, a connecting portion 37, and a guide portion 38; the gear 39 is located between the rack portion 36 of the upper rack 34 and the rack portion 36 of the lower rack 35. The rack portion 36 of each of the upper rack 34 and the lower rack 35 has teeth that mesh with the gear 39 on the side facing the gear 39. The side of the rack portion 36 of the upper rack 34 facing away from the gear 39 is in contact with the inner surface of one side plate 324, and the side of the rack portion 36 of the lower rack 35 facing away from the gear 39 is in contact with the inner surface of the other side plate 324; the bottom surface of the rack portion 36 of the upper rack 34 is... The upper inclined surface 341 is described above. The top end of the rack portion 36 of the upper rack 34 is connected to the bottom end of its guide portion 38 via a connecting portion 37. The top surface of the rack portion 36 of the lower rack 35 is the upper inclined surface 351. The bottom end of the rack portion 36 of the lower rack 35 is connected to the top end of its guide portion 38 via a connecting portion 37. The top plate 322 and the bottom plate 323 of the face shell 32 each have a guide hole 327. The guide portion 38 of the upper rack 34 passes through the guide hole 327 of the top plate 322 and is connected to the bottom end of the upper insert rod 1. The guide portion 38 of the lower rack 35 passes through the guide hole 327 of the bottom plate 323 and is connected to the top end of the lower insert rod 2.

[0026] like Figure 1 , Figure 7 As shown, the upper insertion rod 1 has a connecting piece 5 at its top and the lower insertion rod 2 has a bottom. The axis of the connecting piece 5 is parallel to the axis of the upper insertion rod 1 and the lower insertion rod 2. The connecting piece 5 has a first stud section 51 and a second stud section 52 along its axis. The top of the upper insertion rod 1 and the bottom of the lower insertion rod 2 are threadedly connected to the first stud section 51 of their respective connecting pieces 5, and the second stud section 52 of each connecting piece 5 is threadedly connected to a lock head 6. In use, the design of the lock head 6 on the upper insertion rod 1 and the lower insertion rod 2 being threadedly connected to the connecting piece 5 allows the lock head 6 of the upper insertion rod 1 and the lower insertion rod 2 to rotate and move relative to the connecting piece 5. This makes the combined length of the upper insertion rod 1 and the lower insertion rod 2 with their respective connecting pieces 5 and lock heads 6 adjustable to suit different usage scenarios, making it very convenient to use.

[0027] like Figure 1 , Figure 6As shown, this handle lock also includes an upper locking seat 71 that engages with the lock head 6 of the upper insertion rod 1 and a lower locking seat 72 that engages with the lock head 6 of the lower insertion rod 2. Each of the upper locking seat 71 and the lower locking seat 72 includes a fixed seat 73 and a movable seat 74. The fixed seat 73 is provided with a first toothed section 75 and an elongated hole 76, and the movable seat 74 is provided with a second toothed section 77. The length direction of the elongated hole 76, the arrangement direction of the teeth of the first toothed section 75, and the arrangement direction of the teeth of the second toothed section 77 are all perpendicular to the axial direction of the upper insertion rod 1 and the lower insertion rod 2. The second toothed section 77 of the movable seat 74 of each of the upper locking seat 71 and the lower locking seat 72 meshes with the first toothed section 75 of the fixed seat 73, and the movable seat 74 and the fixed seat 73 are fixed together by a screw passing through the elongated hole 76. Each of the movable seats 74 of the upper locking seat 71 and the lower locking seat 72 is provided with a lock hole 78 for the lock head 6 to pass through. This design allows the movable seat 74 to be adjusted horizontally relative to the fixed seat 73 to accommodate the actual position of the insertion rod.

[0028] To make the structure of this handle lock more reasonable, such as Figure 1 , Figure 4 , Figure 5 As shown, the handle 4 drives the gear 39 to rotate via a drive mechanism 8; the drive mechanism 8 includes a front mounting base 81, a main shaft 82, a drive shaft 83, and a rear mounting base 84; the front mounting base 81 is provided with a shaft hole 811, and the wall of the shaft hole 811 is provided with two limiting grooves 812, which are arranged around the axis of the shaft hole 811, and the length direction of each limiting groove 812 is also arranged around the axis of the shaft hole 811; the main shaft 82 is rotatably inserted into the shaft hole 811, and a limiting block 821 extending into the limiting groove 812 is provided on the main shaft 82; the handle 4 is fixedly connected to one end of the main shaft 82; the drive shaft 83 is a square shaft, and the drive shaft 83 passes through the gear 39, and the drive shaft 83 is synchronously connected to the gear 39; one end of the drive shaft 83 is synchronously connected to the other end of the main shaft 82, and the other end of the drive shaft 83 is rotatably mounted on the rear mounting base 84. When in use, if locking is required, turn the handle 4 to drive the main shaft 82 and drive shaft 83 to rotate, which in turn drives the gear 39 to rotate in the forward direction. When the limiting block 821 of the main shaft 82 rotates to abut against one end of the groove wall of the limiting groove 812, it indicates that the handle lock has been locked. If unlocking is required, turn the handle 4 to drive the main shaft 82 and drive shaft 83 to rotate, which in turn drives the gear 39 to rotate in the reverse direction. When the limiting block 821 of the main shaft 82 rotates to abut against the other end of the groove wall of the limiting groove 812, it indicates that the handle lock has been unlocked.

[0029] like Figure 4As shown, two positioning mechanisms are provided between the handle 4 and the front mounting base 81. These two positioning mechanisms are arranged around the axis of the main shaft 82. Each positioning mechanism includes a ball bearing (not shown in the attached diagram) on the handle 4 and an upper locking groove 813 and an unlocking positioning groove 814 on the front mounting base 81. The upper locking groove 813 and the unlocking positioning groove 814 are arranged around the axis of the main shaft 82, and the ball bearing can be switched between being inserted into the upper locking groove 813 or the unlocking positioning groove 814. With this structure, when the handle 4 is rotated to lock the handle lock, the ball bearings of each positioning mechanism are inserted into their respective upper locking grooves 813, thus positioning the handle 4 and preventing it from rotating relative to the front mounting base 81 under gravity. When the handle 4 is rotated to unlock the handle lock, the ball bearings of each positioning mechanism are inserted into their respective unlocking positioning grooves 814, thus positioning the handle 4 and preventing it from rotating relative to the front mounting base 81 under gravity.

Claims

1. A handle lock, comprising an upper insert rod, a lower insert rod, a transmission box, and a handle; the transmission box includes a housing and an upper rack, a lower rack, and a gear installed within the housing; the upper rack and the lower rack mesh with the gear, the upper rack being connected to the bottom end of the upper insert rod, and the lower rack being connected to the top end of the lower insert rod, such that rotation of the gear can drive the upper and lower insert rods to move in opposite directions or in opposite directions; the handle is used to drive the gear to rotate forward and backward; characterized in that: The outer casing includes a front shell and a cover plate assembled together; the front shell includes a front panel and a top plate, a bottom plate, two side plates, two upper inclined plates, and two lower inclined plates connected to the front panel; the two upper inclined plates are respectively located between the two sides of the top plate and the two side plates, and the two lower inclined plates are respectively located between the two sides of the bottom plate and the two side plates; the bottom surface of the upper rack is a lower inclined surface that engages with one of the lower inclined plates, and the top surface of the lower rack is an upper inclined surface that engages with one of the upper inclined plates; in the unlocked state, the lower inclined surface of the upper rack abuts against the lower inclined plate that engages with it, and the upper inclined surface of the lower rack abuts against the upper inclined plate that engages with it.

2. A handle lock according to claim 1, characterized in that: The faceplate is made of bent metal plates.

3. A handle lock according to claim 1, characterized in that: The angles formed by each upper inclined plate and the top plate, and each side plate, are all within the range of 40° to 50°; the angles formed by each lower inclined plate and the bottom plate, and each side plate, are all within the range of 40° to 50°.

4. A handle lock according to claim 1, characterized in that: Both the upper and lower racks are sandwiched between the cover plate and the panel of the faceplate; each rack includes a rack section, a connecting section, and a guiding section; a gear is located between the rack sections of the upper and lower racks. The rack sections of both the upper and lower racks have teeth that mesh with the gear on the side facing the gear. The side of the rack section of the upper rack facing away from the gear is in contact with the inner surface of one side plate, and the side of the rack section of the lower rack facing away from the gear is in contact with the inner surface of the other side plate. The bottom surface of the rack section of the upper rack is... The upper rack has a connecting portion connecting the top of its rack section to the bottom of its guide section. The lower rack has a connecting portion connecting the top of its rack section to the top of its guide section. The top plate and bottom plate of the faceplate each have a guide hole. The guide section of the upper rack passes through the guide hole in the top plate and is connected to the bottom of the upper insert rod. The guide section of the lower rack passes through the guide hole in the bottom plate and is connected to the top of the lower insert rod.

5. A handle lock according to claim 1, characterized in that: The top end of the upper insertion rod and the bottom end of the lower insertion rod are each provided with a connector; the axis of the connector is parallel to the axis of the upper insertion rod and the lower insertion rod, and the connector is provided with a first stud section and a second stud section along its axis; the top end of the upper insertion rod and the bottom end of the lower insertion rod are each threadedly connected to the first stud section of their own connector, and the second stud section of each connector is threadedly connected to a lock head.

6. A handle lock according to claim 5, characterized in that: It also includes an upper locking seat that engages with the lock head of the upper insertion rod and a lower locking seat that engages with the lock head of the lower insertion rod; each of the upper and lower locking seats includes a fixed seat and a movable seat; the fixed seat has a first toothed section and an elongated hole, and the movable seat has a second toothed section; the length direction of the elongated hole, the arrangement direction of the teeth of the first toothed section, and the arrangement direction of the teeth of the second toothed section are all perpendicular to the axial direction of the upper and lower insertion rods; the second toothed section of the movable seat of each of the upper and lower locking seats meshes with the first toothed section of the fixed seat, and the movable seat and the fixed seat are fixed together by a screw passing through the elongated hole; each of the movable seats of the upper and lower locking seats has a lock hole for the lock head to pass through.

7. A handle lock according to claim 1, characterized in that: The handle drives a gear to rotate via a drive mechanism; the drive mechanism includes a front mounting base, a main shaft, a drive shaft, and a rear mounting base; the front mounting base has a shaft hole, and the wall of the shaft hole has a limiting groove arranged around the axis of the shaft hole; the main shaft is rotatably inserted into the shaft hole, and a limiting block is provided on the main shaft that extends into the limiting groove; the handle is fixedly connected to one end of the main shaft; the drive shaft passes through the gear and is synchronously connected to the gear; one end of the drive shaft is synchronously connected to the other end of the main shaft, and the other end of the drive shaft is rotatably mounted on the rear mounting base.

8. A handle lock according to claim 7, characterized in that: A positioning mechanism is provided between the handle and the front mounting base; the positioning mechanism includes a ball on the handle and an upper locking slot and an unlocking positioning slot on the front mounting base; the upper locking slot and the unlocking positioning slot are arranged around the axis of the main shaft, and the ball can be switched to be embedded in the upper locking slot or the unlocking positioning slot.

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