Novel jack handle limiting structure

Abstract

The utility model relates to the technical field of jack handles, and discloses a novel jack handle limiting structure which comprises a jack base body, a limiting plate is fixedly connected to the surface of one side of the jack base body, and a handle assembly is arranged at the top of the jack base body. The handle assembly comprises a handle body, a limiting pin, a spring, a threaded plug, a handle rubber sleeve, a screw and a kidney-shaped hole, the handle body is arranged at the top of the limiting plate, the limiting pin is arranged in the handle body, the spring is arranged at the top end of the limiting pin, the threaded plug is arranged at the top end of the spring, and the kidney-shaped hole is formed in the handle rubber sleeve. A handle rubber sleeve is arranged on the outer surface of the handle body, a screw is arranged on one side of the handle rubber sleeve, one end of the screw is located in a limiting pin, and a kidney-shaped hole is formed in one side of the limiting pin. According to the novel jack handle limiting structure, the limiting and locking functions are integrated into the handle, the limiting and locking functions are achieved through a single handle device, and operation is simpler.

Description

Technical Field

[0001] This utility model relates to the field of crane handle technology, specifically a novel crane handle limiting structure. Background Technology

[0002] Permanent magnet lifters have a high safety factor, with a maximum pull-out force 2.8-4 times the rated lifting capacity. They are suitable for handling steel plates, iron blocks, and cylindrical iron materials, such as machine parts, punching dies, and various steel materials. Most existing permanent magnet lifters are manually operated; by rotating or pulling the handle, the direction or magnitude of the permanent magnet's magnetic field can be changed, thus achieving the function of holding and releasing the workpiece. Some handles are also equipped with safety buttons, facilitating one-handed operation and improving operational safety.

[0003] According to application number 201920320203.7, a permanent magnet lifter is disclosed. This utility model includes a shell, a fixed frame, and a rotating frame. Several magnets are fixed on both the fixed frame and the rotating frame. A rocker arm is installed on the rotating frame. The rocker arm includes a fixed rod and a sliding cylinder. Several through slots are formed on the outer wall of the sliding cylinder, and a retaining rod is slidably embedded in each slot. A driving component is provided outside the sliding cylinder. A storage groove is formed on the outer wall of the sliding cylinder, and a rotating rod is rotatably connected to the wall of the storage groove. The sliding cylinder can slide along the axial direction of the fixed rod. The driving component drives all the retaining rods to simultaneously press against the side wall of the fixed rod, adjusting the length of the rocker arm for easy use by the worker. Simultaneously, the worker can hold the rotating rod to rotate the rocker arm, facilitating the application of force. Furthermore, the rotating rod can be stored in the storage groove when not in use.

[0004] The existing crane handle structure is mostly included in the instruction manual. Figure 5 The structure shown has a limit pin and a locking pin on the crane base. The two limit pins limit the rotation angle, and the locking pin is attached to... Figure 5 As shown, the locking and releasing of the handle is achieved by moving within the waist-shaped hole. This scheme separates the limiting and locking function from the handle into two parts. Structurally, both the limiting pin and the locking pin are exposed on the surface, which can easily lead to safety hazards and damage. Secondly, this type of limiting mechanism generally requires the handle to be designed to be longer, and the rotation range is larger during use, which requires a certain amount of operating space. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a novel lifting device handle limiting structure that integrates the limiting and locking function into the handle, achieving the limiting and locking function through a single handle device. This makes operation simpler, and the structure has virtually no exposed parts, resulting in a more aesthetically pleasing appearance. This solves the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a novel lifting device handle limiting structure, including a lifting device base, a limiting plate fixedly connected to one side surface of the lifting device base, and a handle assembly provided on the top of the lifting device base;

[0007] The handle assembly includes a handle body, a limiting pin, a spring, a threaded plug, a handle sleeve, a screw, and a waist-shaped hole. The handle body is located on top of the limiting plate. The limiting pin is located inside the handle body. A spring is located at the top of the limiting pin. A threaded plug is located at the top of the spring. A handle sleeve is located on the outer surface of the handle body. A screw is located on one side of the handle sleeve, with one end of the screw located inside the limiting pin. A waist-shaped hole is formed on one side of the limiting pin.

[0008] Preferably, the handle body is rotatably connected to one side of the lifting device base, the limiting pin is slidably connected to the inside of the handle body, the two ends of the spring are fixedly connected to the threaded plug and the limiting pin respectively, and the threaded plug is threadedly connected to the top end of the handle body.

[0009] Preferably, the handle rubber sleeve is slidably connected to the outer surface of the handle body, the screw is threadedly connected to one side of the handle rubber sleeve, and one end of the handle rubber sleeve passes through the waist-shaped hole and is inserted into the interior of the limiting pin.

[0010] Preferably, the inner wall of the limiting plate is provided with grooves on both sides, and the bottom end of the limiting pin is located inside one of the grooves.

[0011] Preferably, the handle body, the limiting pin, the spring, the threaded plug, and the handle rubber sleeve are located on the same axis, the limiting pin is in contact with the inner wall of the handle body, and the handle body is in contact with the inner wall of the handle rubber sleeve.

[0012] Preferably, the inner diameter of the handle sleeve is larger than the outer diameter of the threaded plug.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The new type of crane handle limiting structure integrates the limiting and locking function into the handle. The limiting and locking function is achieved through a single handle device, making operation simpler and with virtually no exposed parts, resulting in a more aesthetically pleasing design. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a novel lifting device handle limiting structure provided by this utility model;

[0016] Figure 2 A schematic diagram of the disassembled handle assembly of a novel lifting device handle limiting structure provided by this utility model;

[0017] Figure 3 A schematic cross-sectional view of the handle assembly of a novel lifting device handle limiting structure provided by this utility model;

[0018] Figure 4 A schematic diagram of the spring compression state structure of a novel lifting device handle limiting structure provided by this utility model;

[0019] Figure 5 A schematic diagram of the existing lifting device handle structure provided by this utility model.

[0020] In the diagram: 1. Lifter base; 2. Limiting plate; 3. Handle assembly; 301. Handle body; 302. Limiting pin; 303. Spring; 304. Threaded plug; 305. Handle rubber sleeve; 306. Screw; 307. Waist-shaped hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 4 A novel lifting device handle limiting structure includes a lifting device base 1, a limiting plate 2 fixedly connected to one side surface of the lifting device base 1, and a handle assembly 3 provided on the top of the lifting device base 1. The handle assembly 3 includes a handle body 301, a limiting pin 302, a spring 303, a threaded plug 304, a handle rubber sleeve 305, a screw 306, and a waist-shaped hole 307. The handle body 301 is located on the top of the limiting plate 2. The limiting pin 302 is provided inside the handle body 301. The spring 303 is provided at the top of the limiting pin 302. The threaded plug 304 is provided at the top of the spring 303. The handle rubber sleeve 305 is provided on the outer surface of the handle body 301. The screw 306 is provided on one side of the handle rubber sleeve 305, and one end of the screw 306 is located inside the limiting pin 302. The waist-shaped hole 307 is provided on one side of the limiting pin 302.

[0023] When you hold the handle sleeve 305 and pull it upwards, the screw 306 and the limit pin 302 will move upwards at the same time, and the top of the limit pin 302 will squeeze the spring 303. The spring 303 will deform under the force and be in a compressed state. At the same time, the bottom of the limit pin 302 will retract into the handle body 301 and will no longer be limited by the limit plate 2. Then, turn the handle to complete the switch action.

[0024] Please see Figures 1 to 4The handle body 301 is rotatably connected to one side of the lifting device base 1, the limiting pin 302 is slidably connected to the inside of the handle body 301, the two ends of the spring 303 are fixedly connected to the threaded plug 304 and the limiting pin 302 respectively, the threaded plug 304 is threadedly connected to the top of the handle body 301, the handle rubber sleeve 305 is slidably connected to the outer surface of the handle body 301, the screw 306 is threadedly connected to one side of the handle rubber sleeve 305, and one end of the handle rubber sleeve 305 passes through the waist-shaped hole 307 and is inserted into the inside of the limiting pin 302;

[0025] By incorporating the handle assembly 3, the limit locking function can be integrated into the handle. The limit locking function is achieved through a single handle device, making operation simpler and more aesthetically pleasing as there are virtually no exposed parts. Furthermore, when the screw 306 slides within the oblong hole 307 on the outer side of the handle body 301, the oblong hole 307 can limit the lifting distance and prevent the handle rubber sleeve 305 from coming off.

[0026] Please see Figures 1 to 4 The inner wall of the limiting plate 2 has grooves on both sides. The bottom end of the limiting pin 302 is located inside one of the grooves. The handle body 301, the limiting pin 302, the spring 303, the threaded plug 304, and the handle rubber sleeve 305 are located on the same axis. The limiting pin 302 fits against the inner wall of the handle body 301, and the handle body 301 fits against the inner wall of the handle rubber sleeve 305. The inner diameter of the handle rubber sleeve 305 is larger than the outer diameter of the threaded plug 304.

[0027] In this invention, the working principle of the device is as follows:

[0028] When in use, the operator holds the handle sleeve 305. Since the handle sleeve 305 is connected to the limit pin 302 via the screw 306, pulling the handle sleeve 305 upward will simultaneously move the screw 306 and the limit pin 302 upward, causing the top of the limit pin 302 to compress the spring 303. The spring 303 deforms under force and is in a compressed state, while the bottom of the limit pin 302 retracts into the handle body 301, no longer limited by the limit plate 2. Then, turning the handle will complete the switching action. Conversely, releasing the handle sleeve 305 will cause the spring 303 to reset and rebound, causing the limit pin 302 to automatically return to the center and re-lock. This makes it easy for the operator to operate and understand. Furthermore, when the screw 306 slides in the oblong hole 307 on the outside of the handle body 301, the oblong hole 307 can limit the lifting distance and prevent the handle sleeve 305 from coming off.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel lifting device handle limiting structure, comprising a lifting device base (1), characterized in that, A limiting plate (2) is fixedly connected to one side surface of the lifting device base (1), and a handle assembly (3) is provided on the top of the lifting device base (1). The handle assembly (3) includes a handle body (301), a limiting pin (302), a spring (303), a threaded plug (304), a handle sleeve (305), a screw (306), and a waist-shaped hole (307). The handle body (301) is located on the top of the limiting plate (2). The limiting pin (302) is located inside the handle body (301). A spring (303) is located at the top of the limiting pin (302). A threaded plug (304) is located at the top of the spring (303). The handle sleeve (305) is located on the outer surface of the handle body (301). A screw (306) is located on one side of the handle sleeve (305), and one end of the screw (306) is located inside the limiting pin (302). A waist-shaped hole (307) is provided on one side of the limiting pin (302).

2. The novel lifting handle limiting structure according to claim 1, characterized in that: The handle body (301) is rotatably connected to one side of the lifting device base (1), the limiting pin (302) is slidably connected to the inside of the handle body (301), the two ends of the spring (303) are fixedly connected to the threaded plug (304) and the limiting pin (302) respectively, and the threaded plug (304) is threadedly connected to the top end of the handle body (301).

3. The novel lifting device handle limiting structure according to claim 1, characterized in that: The handle sleeve (305) is slidably connected to the outer surface of the handle body (301), the screw (306) is threadedly connected to one side of the handle sleeve (305), and one end of the handle sleeve (305) passes through the waist-shaped hole (307) and is inserted into the interior of the limiting pin (302).

4. The novel lifting handle limiting structure according to claim 1, characterized in that: The inner wall of the limiting plate (2) is provided with grooves on both sides, and the bottom end of the limiting pin (302) is located inside one of the grooves.

5. The novel lifting handle limiting structure according to claim 1, characterized in that: The handle body (301), the limiting pin (302), the spring (303), the threaded plug (304), and the handle rubber sleeve (305) are located on the same axis. The limiting pin (302) is in contact with the inner wall of the handle body (301), and the handle body (301) is in contact with the inner wall of the handle rubber sleeve (305).

6. The novel lifting handle limiting structure according to claim 1, characterized in that: The inner diameter of the handle sleeve (305) is larger than the outer diameter of the threaded plug (304).

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