Top shaking type jack

Abstract

The utility model discloses a top rocking type jack which is provided with a telescopic component and a driving component, the driving component comprises a transmission shaft, a mounting seat, a limiting sleeve, a reset spring, a transmission sleeve and a handle, the mounting seat is fixedly connected with an outer pipe, the limiting sleeve is fixedly connected with the mounting seat, the transmission sleeve is movably connected with the limiting sleeve, the transmission sleeve is provided with an outer protrusion, and the handle is fixedly connected with the transmission shaft. The inner protrusion and the outer protrusion are opposite in the direction parallel to the center line of the screw, the reset spring is located between the installation base and the transmission sleeve, one end of the transmission shaft is connected with the screw, the transmission shaft penetrates through the transmission sleeve, and the other end of the transmission sleeve is fixedly connected with the handle. According to the jacking and swinging type jack, the driving component which can be independent of the telescopic component is obtained through modular design, a clutch transmission structure is adopted in the driving component, and it is guaranteed that a handle is combined on the telescopic component when manual driving and electric driving are switched; therefore, the use defect that the handle is found or lost in the use process of the jack is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to a jack especially relates to power input structure of top shake formula jack. BACKGROUND

[0002] The jack is a commonly used load tool, and is widely used on a truck, a motor home and a trailer. The jack is driven in a manual mode or an electric mode, and the two modes can be combined in the same jack. In the prior art, a technical scheme for driving the jack in the manual and electric modes usually adopts a discrete structure, and a screw rod for extension is arranged inside the jack, and one end of the screw rod is arranged outside the jack and is a standard external hexagonal connecting structure. During use, a specially configured handle can be used to connect the screw rod, the handle is provided with an internal hexagonal hole, the screw rod is embedded in the internal hexagonal hole of the handle, the handle is rotated to drive the screw rod to move, and then the lifting operation of the whole jack is implemented. An electric drill provided with a sleeve can also be used to connect the screw rod, and the electric drill can directly drive the screw rod to move when the electric drill is started. Compared with the manual mode, the electric mode is faster in driving the whole jack to lift. The handle of the jack is discrete from the main body of the jack, and the placement of the handle needs to be considered after the driving mode is changed. If the handle is not properly disposed, the handle needs to be searched for, and the handle can even be lost. Therefore, the jack provided with the two driving modes has a use defect due to the discrete structure. SUMMARY

[0003] The utility model solves the technical problem of how to make the jack provided with the two driving modes into an integrated structure.

[0004] To solve the above technical problems, the utility model discloses the following technical scheme: the top rocking jack is equipped with telescopic parts, the telescopic parts are equipped with outer tubes and inner tubes, the inner tube is located in the outer tube, the inner tube is movably connected with the outer tube through the screw part, the screw part includes nut and screw rod, the nut is fixedly connected with the inner tube, the screw rod is movably connected with the outer tube, the nut and the screw rod are engagedly connected, the center line of the screw rod, the center line of the outer tube and the center line of the inner tube are parallel to each other, one end of the screw rod is located outside the outer tube, the top rocking jack is also equipped with driving parts, the driving parts include transmission shaft, mounting seat, limiting sleeve, reset spring, transmission sleeve and handle, the mounting seat is fixedly connected with the outer tube, the limiting sleeve is fixedly connected with the mounting seat, the limiting sleeve is equipped with inner protrusions, one end of the transmission sleeve is embedded in the limiting sleeve, the transmission sleeve is movably connected with the limiting sleeve, the transmission sleeve is equipped with outer protrusions, the inner protrusion and the outer protrusion are opposite in the direction of the center line of the parallel screw rod, the outer protrusion is slidably connected with the inner wall of the limiting sleeve, so that the limiting sleeve is guidingly connected with the transmission sleeve, the reset spring is located between the mounting seat and the transmission sleeve, one end of the transmission shaft is connected with the screw rod, the center line of the transmission shaft coincides with the center line of the screw rod, the transmission shaft passes through the transmission sleeve, the other end of the transmission sleeve is fixedly connected with the handle, the handle is equipped with connecting end and handheld end, the connecting end is fixedly connected with the transmission sleeve, the handheld end is movably connected with the connecting end, the inner wall of the transmission sleeve is equipped with transmission part and assembly part, the cross section of the transmission sleeve is regular polygon in the transmission part, the cross section of the transmission sleeve is circular in the assembly part, the diameter of the transmission sleeve in the assembly part is greater than or equal to the minimum width of the transmission sleeve in the transmission part, the transmission shaft is equipped with the force receiving part corresponding to the transmission part and the idling part for disconnecting the connection relationship with the transmission sleeve, the force receiving part is located at the other end of the transmission shaft, the cross section of the transmission shaft is regular polygon in the force receiving part, the cross section of the transmission shaft is circular in the idling part, the diameter of the transmission shaft in the idling part is less than or equal to the minimum width of the transmission shaft in the force receiving part, the movable range of the transmission sleeve on the mounting seat includes the position that the transmission sleeve is embedded in the transmission part of the transmission sleeve in the force receiving part of the transmission shaft and the position that the transmission sleeve is embedded in the transmission part of the transmission sleeve in the idling part of the transmission shaft, the transmission shaft is connected with the transmission sleeve by embedding in the transmission part through the force receiving part, and the transmission shaft is disconnected with the transmission sleeve by embedding in the transmission part through the idling part.

[0005] The top rocking jack adopts modular design and includes telescopic parts and driving parts.

[0006] The drive unit employs a clutch-driven transmission structure. By changing the relative position of the transmission sleeve and the drive shaft, their connection relationship can be altered, including connection between the transmission sleeve and the drive shaft, and disconnection. The drive shaft is connected to the screw, and the handle is connected to the transmission sleeve. When the transmission sleeve is connected to the drive shaft, power can be input via the handle; when disconnected, the drive shaft can be driven by an electric drill. This clutch-driven transmission design ensures the handle remains engaged with the drive unit and does not disengage, thus avoiding the problems of searching for or losing the handle during jack use.

[0007] The regular polygons described in the above scheme include squares, regular hexagons, and regular octagons. Since regular hexagons are commonly used as the mating standard, as a preferred embodiment of this scheme, the cross-section of the transmission sleeve at the transmission part has a regular hexagonal profile, and the cross-section of the transmission shaft at the force-bearing part has a regular hexagonal profile. This makes it very convenient when configuring a socket for an electric drill or when a wrench is needed to drive a jack.

[0008] The drive shaft has a force-bearing part and an idle part. The force-bearing part needs to have regular polygonal features corresponding to the regular polygonal structure of the transmission part, while the idle part has circular features. To facilitate the machining of the drive shaft, it is made from a single hexagonal bar shaped like a hexagonal prism. After machining, the drive shaft has a hexagonal prism structure at both ends and a cylindrical structure in the middle. The force-bearing part is located at one end of the drive shaft, and the idle part is located in the middle of the drive shaft.

[0009] The drive component is designed as a detachable structure, facilitating assembly between the mounting base and the limiting sleeve, as well as maintenance of the drive component. To this end, the mounting base is provided with a mounting protrusion that extends into the limiting sleeve, and a bolt is installed between the mounting protrusion and the limiting sleeve. As part of the mounting base, the mounting protrusion, when embedded in the limiting sleeve, also increases the mechanical strength of the limiting sleeve, enhancing its bending resistance and protecting the connection structure between the drive shaft and the screw.

[0010] To improve the bending and torsional resistance of the telescopic components of the top-crank jack, both the outer profile of the outer tube and the cross-sectional outer profile of the outer tube are regular hexagonal.

[0011] The present invention adopts the above-mentioned technical solution: the top-crank jack has a modular design to obtain a drive component that can be independent of the telescopic component. The drive component adopts a clutch transmission structure inside, which ensures that the handle is engaged with the telescopic component when switching between manual and electric drive. This avoids the defects of searching for the handle or losing the handle during the use of the jack. Attached Figure Description

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a perspective view of a top-cranked jack according to the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of a top-cranked jack according to the present invention;

[0015] Figure 3 This is a schematic diagram showing the use of the top-crank jack of this utility model in the state where the transmission sleeve is detached from the transmission shaft and has rotated through a 90-degree angle. Detailed Implementation

[0016] like Figure 1 , 2 As shown in Figure 3, the top-crank jack is equipped with a telescopic component 1 and a drive component 6. The drive component 6 is fixedly connected to the telescopic component 1, and the drive component 6 transmits power to extend or shorten the telescopic component 1.

[0017] The telescopic component 1 comprises an outer tube 2 and an inner tube 3, both of which are hexagonal tubes, resulting in both the outer and inner contours of the cross-section of the outer tube 2 being regular hexagons. The inner tube 3 and outer tube 2 are movably connected via a lead screw assembly. The lead screw assembly includes a nut 4 and a screw rod 5. The nut 4 is fixedly connected to the inner tube 3, while the screw rod 5 is movably connected to the outer tube 2, with the nut 4 and screw rod 5 engaging. After installation, the inner tube 3 is located inside the outer tube 2, and the centerlines of the screw rod 5, the inner tube 3, and the outer tube 2 coincide; one end of the screw rod 5 is located outside the outer tube 2. Rotation of the screw rod 5 changes the position of the nut 4 on the screw rod 5, thus changing the relative position of the outer tube 2 and the inner tube 3, thereby enabling the telescopic component 1 to extend and retract.

[0018] The drive component 6 is fixedly installed at one end of the telescopic component 1. The drive component 6 includes a drive shaft 7, a mounting base 10, a limiting sleeve 12, a return spring 14, a transmission sleeve 15, and a handle 19. The mounting base 10 has a disc-shaped structure, one side of which is fixedly connected to the outer tube 2, and the other side of the mounting base 10 has an annular mounting protrusion 11. The limiting sleeve 12 has a tubular structure, and the mounting protrusion 11 extends into the limiting sleeve 12 and is located at one end of the limiting sleeve 12. A bolt is installed between the mounting protrusion 11 and the limiting sleeve 12 to fix the mounting protrusion 11 and the limiting sleeve 12 together. The other end of the limiting sleeve 12 has an inner protrusion 13 that extends toward the centerline of the limiting sleeve 12, making the channel diameter at the other end of the limiting sleeve 12 smaller. The transmission sleeve 15 is also a tubular structure with an internal channel. One end of the transmission sleeve 15 is embedded in the limiting sleeve 12, and the transmission sleeve 15 and the limiting sleeve 12 can be slidably connected. The transmission sleeve 15 has an external protrusion 16. After the transmission sleeve 15 and the limiting sleeve 12 are assembled together, the inner protrusion 13 and the outer protrusion 16 are opposite each other in the direction parallel to the center line of the screw 5. The outer protrusion 16 is slidably connected to the inner wall of the limiting sleeve 12, thus guiding the limiting sleeve 12 and the transmission sleeve 15. When the transmission sleeve 15 slides within the limiting sleeve 12, it receives guidance from the limiting sleeve 12. The outer protrusion 16 is blocked by the inner protrusion 13, which restricts the sliding range of the transmission sleeve 15 relative to the limiting sleeve 12, preventing the transmission sleeve 15 from detaching from the limiting sleeve 12 at the inner protrusion 13. The return spring 14 is located inside the limiting sleeve 12, between the mounting base 10 and the transmission sleeve 15.

[0019] The drive shaft 7 has a hexagonal prism structure at both ends and a cylindrical structure in the middle. One end of the screw 5 is flat, and a connecting groove is provided at one end of the drive shaft 7. The flat end of the screw 5 is inserted into the connecting groove, and a pin is placed between the drive shaft 7 and the screw 5, thus connecting one end of the drive shaft 7 to the screw 5. After installation, the center lines of the drive shaft 7, the drive sleeve 15, and the limiting sleeve 12 all coincide with the center line of the screw 5. The drive shaft 7 passes through the drive sleeve 15, and the return spring 14 is located outside the drive shaft 7. The other end of the drive shaft 7 serves as the force-bearing part 8, used to connect with the drive sleeve 15 or to a sleeve on an external electric drill. The cylindrical structure in the middle of the drive shaft 7 serves as the idle part 9, used to disengage from the drive sleeve 15. Therefore, the cross-section of the drive shaft 7 at the force-bearing part 8 is a regular hexagon, and the cross-section of the drive shaft 7 at the idle part 9 is circular. The diameter of the drive shaft 7 in the idle part 9 is less than or equal to the minimum width of the drive shaft 7 in the stressed part 8.

[0020] The other end of the transmission sleeve 15 is fixedly connected to the handle 19. The handle 19 is provided with a connecting end 20 and a hand-held end 21. The connecting end 20 is fixedly connected to the transmission sleeve 15, and the hand-held end 21 is movably connected to the connecting end 20. The hand-held end 21 can swing on the connecting end 20 to form different spatial postures of the hand-held end 21 relative to the connecting end 20.

[0021] The inner wall of the transmission sleeve 15 is provided with a transmission part 17 and an assembly part 18. The cross-section of the transmission sleeve 15 at the transmission part 17 is a regular hexagon, and the cross-section of the transmission sleeve 15 at the assembly part 18 is circular. Furthermore, the diameter of the transmission sleeve 15 at the assembly part 18 is greater than the minimum width of the transmission sleeve 15 at the transmission part 17. The transmission part 17 corresponds to the force-bearing part 8, and the cross-sectional profiles of the two are the same.

[0022] The range of motion of the transmission sleeve 15 on the mounting base 10 includes the position where the transmission sleeve 15 is embedded in the transmission part 17 of the transmission shaft 7 at the force-bearing part 8, and the position where the transmission sleeve 15 is embedded in the transmission part 17 of the transmission shaft 7 at the idle part 9. In the initial state, the return spring 14 pushes the transmission sleeve 15, causing it to be in the position where the transmission sleeve 15 is embedded in the transmission part 17 of the transmission shaft 7 at the force-bearing part 8. The handle 19 is deformable, allowing it to be folded relative to the transmission sleeve 15 and the entire top-crank jack. In the initial state, the transmission shaft 7 is connected to the transmission sleeve 15 via the force-bearing part 8 embedded in the transmission part 17. The handle 19 can then be moved, and it is in the extended state relative to the telescopic member 1, allowing the top-crank jack to be driven manually. When selecting the electric method to drive the top-crank jack, the electric drill with the sleeve installed needs to be connected to the drive shaft 7, with the sleeve abutting against the drive sleeve 15. At the same time, push the sleeve forcefully, and the force-bearing part 8 of the drive shaft 7 will be embedded into the sleeve, while the idle part 9 of the drive shaft 7 will be embedded into the transmission part 17 of the drive sleeve 15. At this time, the drive shaft 7 will be disengaged from the drive sleeve 15 through the idle part 9 being embedded in the transmission part 17. Starting the electric drill will directly drive the drive shaft 7 to rotate, while the drive sleeve 15 will not be driven. At this time, the handle 19 can be folded, and the handle 19 is still attached to the top-crank jack.

[0023] Based on the above embodiments, new embodiments can be obtained through the following modifications: A new embodiment can be obtained by setting the diameter of the transmission sleeve at the assembly part to be equal to the minimum width of the transmission sleeve at the transmission part. A new embodiment can be obtained by setting the diameter of the transmission shaft at the idling part to be equal to the minimum width of the transmission shaft at the stressed part. A new embodiment can be obtained by using a square as a regular polygon. A new embodiment can be obtained by using a regular octagon as a regular polygon.

Claims

1. A top-shaking jack, which is provided with a telescopic part (1), the telescopic part (1) is provided with an outer tube (2) and an inner tube (3), the inner tube (3) is located inside the outer tube (2), the inner tube (3) and the outer tube (2) are movably connected through a screw part, the screw part includes a nut (4) and a screw rod (5), the nut (4) is fixedly connected with the inner tube (3), the screw rod (5) is movably connected with the outer tube (2), the nut (4) and the screw rod (5) are meshingly connected, the center line of the screw rod (5), the center line of the outer tube (2) and the center line of the inner tube (3) are parallel to each other, one end of the screw rod (5) is located outside the outer tube (2), characterized in that: The top rocker jack further is equipped with a driving component (6), the driving component (6) includes transmission shaft (7), mounting seat (10), limit sleeve (12), reset spring (14), transmission sleeve (15), handle (19), the mounting seat (10) is fixedly connected with outer tube (2), the limit sleeve (12) is fixedly connected with mounting seat (10), the limit sleeve (12) is equipped with inner protrusion (13), one end of transmission sleeve (15) is embedded in limit sleeve (12), transmission sleeve (15) is movably connected with limit sleeve (12), transmission sleeve (15) is equipped with outer protrusion (16), the inner protrusion (13) and outer protrusion (16) are opposite in the direction of the center line of parallel screw rod (5), the outer protrusion (16) is slidably connected with the inner wall of limit sleeve (12) to make limit sleeve (12) and transmission sleeve (15) guide connection, the reset spring (14) is located between mounting seat (10) and transmission sleeve (15), one end of transmission shaft (7) is connected with screw rod (5), the center line of transmission shaft (7) coincides with the center line of screw rod (5), transmission shaft (7) passes through transmission sleeve (15), the other end of transmission sleeve (15) is fixedly connected with handle (19), the handle (19) is equipped with connecting end (20) and handheld end (21), the connecting end (20) is fixedly connected with transmission sleeve (15), the handheld end (21) is movably connected with connecting end (20), the inner wall of transmission sleeve (15) is equipped with transmission site (17) and assembly site (18), the cross section of transmission sleeve (15) is regular polygon in the profile of transmission site (17), the cross section of transmission sleeve (15) is circular in the profile of assembly site (18), the diameter of transmission sleeve (15) in assembly site (18) is greater than or equal to the minimum width of transmission sleeve (15) in transmission site (17), the transmission shaft (7) is equipped with the force receiving site (8) corresponding to transmission site (17) for being connected with transmission sleeve (15) and idle site (9) for being disconnected with transmission sleeve (15), the force receiving site (8) is located at the other end of transmission shaft (7), the cross section of transmission shaft (7) is regular polygon in the profile of force receiving site (8), the cross section of transmission shaft (7) is circular in the profile of idle site (9), the diameter of transmission shaft (7) in idle site (9) is less than or equal to the minimum width of transmission shaft (7) in force receiving site (8), the movable range of transmission sleeve (15) on mounting seat (10) includes the position that transmission sleeve (15) is in force receiving site (8) of transmission shaft (7) and is embedded in transmission site (17) of transmission sleeve (15), and the position that transmission sleeve (15) is in idle site (9) of transmission shaft (7) and is embedded in transmission site (17) of transmission sleeve (15),The transmission shaft (7) is embedded in the transmission part (17) through the force receiving part (8) to be connected with the transmission sleeve (15), and the transmission shaft (7) is embedded in the transmission part (17) through the idling part (9) to be disconnected with the transmission sleeve (15). ​ 2. A top swing jack as claimed in claim 1 wherein: The cross section of the transmission sleeve (15) is a regular hexagon at the transmission part (17), and the cross section of the transmission shaft (7) is a regular hexagon at the stress part (8).

3. The top swing jack of claim 1, wherein: The transmission shaft (7) is a hexagonal prism structure at both ends and a cylindrical structure in the middle.

4. The top swing jack of claim 1, wherein: The mounting seat (10) is provided with a mounting protrusion (11), the mounting protrusion (11) extends into the limiting sleeve (12), and a bolt is mounted between the mounting protrusion (11) and the limiting sleeve (12).

5. The top swing jack of claim 1, wherein: The cross section of the outer tube (2) is a regular hexagon, and the cross section of the outer tube (2) is also a regular hexagon.

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