Impact-resistant motor home electric jack
By designing an impact-resistant motorhome electric jack with a locking structure, the problem of the jack in the prior art that cannot avoid huge downward impact force when supporting the RV is supported, higher stability and safety are achieved, and maintenance costs are reduced.
Patent Information
- Application Number
- CN202311414251.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-29
- Publication Date
- 2025-04-29
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When supporting the RV, existing electric jacks cannot effectively avoid sudden under heavy downward impact, resulting in damage to the motor, loss of support from the roof and lift racks, and the RVs fall rapidly, causing damage to the body and jacks, increasing maintenance costs and reducing safety.
An impact-resistant electric jack of RV is designed, which adopts structures including base, lifting frame, roof plate, rotating rod, drive motor, support frame, extension cylinder, extension arm, positioning groove, positioning block, adjustment components, etc. The screw rod is driven to rotate by twisting the knob, so that the positioning block is inserted into the positioning groove, achieving a locking effect and avoiding excessive load bearing.
It effectively avoids the jack to withstand huge downward impact when supporting the RV, prevents motor damage and the roof and lifting rack from losing support, ensures the stability and safety of the RV, and reduces maintenance costs.
Smart Images
Figure CN119898700A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of electric jacks, and in particular to an impact-resistant electric jack for a recreational vehicle. Background Art
[0002] With the development of the economy and the increase of national GDP, people's living standards are constantly improving, and people's demand for spiritual consumption is constantly increasing, especially in camping / self-driving travel, which has driven the continuous development of the domestic RV market; in addition, with the development of informatization and intelligence, special RVs have appeared in various industries, such as fire command RVs, emergency RVs, and public security command RVs. In short, RVs appear in all aspects of our lives in different forms. When these RVs are stationary or fixed, jacks have become indispensable supporting devices. In order to fix the RV more quickly and safely, it is necessary to consider the situation when the jack is supported to avoid the jack suddenly being subjected to a huge falling impact force and bearing too much weight. The existing electric jacks on the market are not designed with auxiliary locking structures, and only rely on the motor to bear the force. However, when the motor cannot withstand the impact force and is damaged, the top plate and the lifting frame will lose their supporting force, and the RV will drop rapidly, resulting in damage to the body and the jack, which not only increases the maintenance cost, but also reduces the safety factor. Summary of the invention
[0003] The object of the present invention is to provide an impact-resistant electric jack for a recreational vehicle to solve the problems raised in the above-mentioned background technology.
[0004] To achieve the above object, the present invention provides the following technical solutions:
[0005] A shock-resistant RV electric jack comprises a base, a lifting frame is rotatably connected to the inner side of the top of the base, a top plate is installed on the top of the lifting frame, a rotating rod is threadedly connected to the inner side of the lifting frame, a positioning seat is installed on one side of the rotating rod, a driving motor is installed on the positioning seat, support frames are installed on both sides of the base, an extension cylinder is rotatably connected to the top of the support frame, an extension arm is slidably connected to the inside of the extension cylinder, a plurality of groups of positioning grooves are provided on one side of the extension arm, a movable groove is provided on one side of the extension cylinder, a positioning block is slidably connected to the inner side of the movable groove, the positioning block is snap-fitted to the positioning groove, and an adjustment component is installed on the end of the positioning block located outside the movable groove.
[0006] As a preferred solution of the present invention, the adjustment assembly includes a mounting seat, a mounting seat is installed on one side of the extension tube, a sliding groove is opened on one side of the mounting seat and is slidably connected to the positioning block, a first threaded rod is rotatably connected inside the mounting seat, one end of the positioning block located on the inner side of the mounting seat is sleeved on the outer side of the first threaded rod, and a first knob is installed on the end of the first threaded rod extending to the outer side of the mounting seat.
[0007] As a preferred solution of the present invention, one side of the support frame is threadedly connected to a plug rod via a bolt, the inner side of the plug rod is rotatably connected to a second threaded rod, the outer side of the second threaded rod is sleeved with a movable seat, and a second knob is installed on the top of the second threaded rod.
[0008] As a preferred solution of the present invention, a limiting groove is provided inside the movable seat, and a limiting block fixedly connected to the inner side of the insertion rod is slidably connected inside the limiting groove.
[0009] As a preferred solution of the present invention, a first inclined groove is provided at both ends of the movable seat, a first limiting plate is slidably connected to the inner side of the first inclined groove, a second inclined groove is provided inside the movable seat on one side of the first inclined groove, a second limiting plate is slidably connected to the inner side of the second inclined groove, one end of the second limiting plate is fixedly connected to the first limiting plate, and the diameter of the first limiting plate is larger than that of the second limiting plate.
[0010] As a preferred solution of the present invention, a positioning column is installed on one side of the second limiting plate, and movable holes slidably connected to the positioning column are opened at both ends of the insertion rod.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] 1. In the present invention, after the RV is lifted up by the jack, the first knob is twisted to drive the first threaded rod to rotate, so that the positioning block moves along the path of the sliding groove on the first threaded rod, thereby driving the positioning block located outside the sliding groove to insert into the moving groove into the interior of the extension tube, and engage with the positioning groove to achieve a locking effect, so that the extension arm cannot be retracted into the interior of the extension tube, thereby preventing the jack from suddenly bearing too much weight when subjected to a huge falling impact force, preventing the motor from being unable to withstand and being damaged, and the top plate and the lifting frame from losing their supporting force, followed by a rapid drop of the RV, resulting in damage to the vehicle body and the jack, increasing maintenance costs, and poor safety.
[0013] 2. In the present invention, by installing the insertion rods on both sides of the support frame, the rods can be inserted into the soil when the RV is parked on soft soil, so as to avoid the displacement of the jack due to the soft soil at the bottom of the jack when the RV is lifted up, and by turning the second knob, the movable seat cooperates with the limit block and the limit groove to move, and at the same time, the second limit plate and the first limit plate move in the first inclined groove and the second inclined groove, so that the positioning column extends from the movable hole and is inserted into the soil to perform the second positioning, ensuring that the jack will not shift. If it is parked on a cement ground, it can be removed.
[0014] 3. In the present invention, the driving motor is started to drive the rotating rod to rotate, so that the lifting frame mounted on the outside of the rotating rod drives the top plate to move upward, and the RV is lifted up to facilitate subsequent maintenance or other operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the plug rod of the present invention;
[0017] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the extension tube and the extension arm of the present invention;
[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the adjustment component of the present invention.
[0019] In the figure: 1. base; 2. lifting frame; 3. top plate; 4. rotating rod; 5. driving motor; 6. supporting frame; 7. extension tube; 8. extension arm; 9. positioning groove; 10. positioning block; 11. first threaded rod; 12. first knob; 13. insertion rod; 14. second threaded rod; 15. movable seat; 16. first inclined groove; 17. first limiting plate; 18. second inclined groove; 19. second limiting plate; 20. positioning column. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0021] Example:
[0022] See also Figure 1-Figure 4 , the present invention provides a technical solution:
[0023] A shock-resistant RV electric jack comprises a base 1, support frames 6 are installed on both sides of the base 1, a stretching tube 7 is rotatably connected to the top of the support frame 6, an extension arm 8 is slidably connected inside the extension tube 7, a plurality of positioning grooves 9 are provided on one side of the extension arm 8, a moving groove is provided on one side of the extension tube 7, a positioning block 10 is slidably connected inside the moving groove, the positioning block 10 is snap-fitted to the positioning groove 9, an adjustment component is installed on one end of the positioning block 10 located on the outside of the moving groove, the adjustment component comprises a mounting seat, a mounting seat is installed on one side of the extension tube 7, a sliding groove slidably connected to the positioning block 10 is provided on one side of the mounting seat, a first threaded rod 11 is rotatably connected inside the mounting seat, one end of the positioning block 10 located on the inner side of the mounting seat is sleeved on the outside of the first threaded rod 11, the first threaded rod 11 is provided with a first knob 12 at one end extending to the outside of the mounting seat. When the electric jack is in use, after the RV is lifted by the jack, the first knob 12 is twisted to drive the first threaded rod 11 to rotate, so that the positioning block 10 moves along the path of the sliding groove on the first threaded rod 11, thereby driving the positioning block 10 located on the outside of the sliding groove to insert into the moving groove into the extension tube 7, and engage with the positioning groove 9 to achieve a locking effect, so that the extension arm 8 cannot be retracted into the extension tube 7, to prevent the jack from suddenly bearing too much weight when it is subjected to a huge falling impact force, the driving motor 5 cannot withstand and is damaged, the top plate 3 and the lifting frame 2 lose their supporting force, and the RV drops rapidly, resulting in damage to the vehicle body and the jack, increasing the maintenance cost and poor safety.
[0024] In this embodiment, if Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, one side of the support frame 6 is threadedly connected with an insertion rod 13 through a bolt, and a second threaded rod 14 is rotatably connected to the inner side of the insertion rod 13. A movable seat 15 is sleeved on the outer side of the second threaded rod 14, and a second knob is installed on the top of the second threaded rod 14. A limiting groove is arranged inside the movable seat 15, and a limiting block fixedly connected to the inner side of the insertion rod 13 is slidably connected to the inner side of the limiting groove. Both ends of the movable seat 15 are provided with a first inclined groove 16, and a first limiting plate 17 is slidably connected to the inner side of the first inclined groove 16. A second inclined groove 18 is arranged inside the movable seat 15 on one side of the first inclined groove 16, and a second limiting plate 19 is slidably connected to the inner side of the second inclined groove 18. One end of the second limiting plate 19 is fixedly connected to the first limiting plate 17, and the diameter of the first limiting plate 17 is larger than that of the first limiting plate 17. A positioning column 20 is installed on one side of the second limit plate 19, and movable holes slidably connected to the positioning column 20 are opened at both ends of the insertion rod 13. By installing the insertion rod 13 on both sides of the support frame 6, the RV can be inserted into the soil when the RV is parked on soft mud, so as to avoid the jack from shifting due to the soft soil at the bottom of the jack when the RV is lifted up, and by turning the second knob, the movable seat 15 cooperates with the limit block and the limit groove to move, and at the same time, the second limit plate 19 and the first limit plate 17 move in the first inclined groove 16 and the second inclined groove 18, so that the positioning column 20 extends out of the movable hole and is inserted into the soil for the second positioning to ensure that the jack will not shift. If it is parked on a cement ground, it can be removed.
[0025] In this embodiment, if Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a lifting frame 2 is rotatably connected to the inner side of the top of the base 1, a top plate 3 is installed on the top of the lifting frame 2, a rotating rod 4 is threadedly connected to the inner side of the lifting frame 2, a positioning seat is installed on one side of the rotating rod 4, and a driving motor 5 is installed on the positioning seat. By starting the driving motor 5 to drive the rotating rod 4 to rotate, the lifting frame 2 mounted on the outside thereof drives the top plate 3 to move upward, thereby lifting the RV so that personnel can carry out subsequent maintenance or other operations.
[0026] The implementation principle of an impact-resistant RV electric jack in the embodiment of the present application is as follows: when the electric jack is in use, after the RV is lifted by the jack, the first knob 12 is twisted to drive the first threaded rod 11 to rotate, so that the positioning block 10 moves along the path of the sliding groove on the first threaded rod 11, thereby driving the positioning block 10 located outside the sliding groove to insert into the moving groove into the extension tube 7, and engage with the positioning groove 9 to achieve a locking effect, so that the extension arm 8 cannot be retracted into the extension tube 7, to avoid the jack suddenly being subjected to a huge falling impact force and bearing too much weight, the driving motor 5 cannot withstand and is damaged, the top plate 3 and the lifting frame 2 lose their supporting force, and the RV drops rapidly, resulting in damage to the car body and the jack, increasing the maintenance cost, and poor safety. By installing the insertion rod 13 on both sides of the support frame 6, the insertion rod 13 can be inserted into the soil when the RV is parked on soft soil, so as to avoid the jack being displaced due to the soft soil at the bottom of the jack when the RV is lifted up, and by turning the second knob, the movable seat 15 cooperates with the limit block and the limit groove to move, and at the same time, the second limit plate 19 and the first limit plate 17 move in the first inclined groove 16 and the second inclined groove 18, so that the positioning column 20 extends from the movable hole and is inserted into the soil for the second positioning to ensure that the jack will not shift. If it is parked on a cement ground, it can be removed, and the driving motor 5 is started to drive the rotating rod 4 to rotate, so that the lifting frame 2 mounted on the outside thereof drives the top plate 3 to move upward, and the RV is lifted up, so that personnel can carry out subsequent maintenance or other operations.
[0027] The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.
[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An impact-resistant electric jack for a recreational vehicle, comprising a base (1), characterized in that: The inner side of the top of the base (1) is rotatably connected to a lifting frame (2), the top of the lifting frame (2) is installed with a top plate (3), the inner side of the lifting frame (2) is threadedly connected to a rotating rod (4), one side of the rotating rod (4) is installed with a positioning seat, and a driving motor (5) is installed on the positioning seat. Support frames (6) are installed on both sides of the base (1), the top of the support frame (6) is rotatably connected to an extension cylinder (7), the extension cylinder (7) is slidably connected with an extension arm (8), one side of the extension arm (8) is provided with multiple groups of positioning grooves (9), one side of the extension cylinder (7) is provided with a moving groove, the inner side of the moving groove is slidably connected with a positioning block (10), the positioning block (10) is snap-fitted with the positioning groove (9), and an adjustment component is installed at one end of the positioning block (10) located outside the moving groove.
2. The impact-resistant electric jack for RV according to claim 1, characterized in that: The adjustment assembly comprises a mounting seat, the mounting seat is mounted on one side of the extension tube (7), a sliding groove is provided on one side of the mounting seat and is slidably connected to a positioning block (10), a first threaded rod (11) is rotatably connected inside the mounting seat, one end of the positioning block (10) located on the inner side of the mounting seat is sleeved on the outer side of the first threaded rod (11), and a first knob (12) is mounted on one end of the first threaded rod (11) extending to the outer side of the mounting seat.
3. The impact-resistant electric jack for RV according to claim 1, characterized in that: One side of the support frame (6) is threadedly connected to an insertion rod (13) via a bolt, the inner side of the insertion rod (13) is rotatably connected to a second threaded rod (14), the outer side of the second threaded rod (14) is sleeved with a movable seat (15), and the top of the second threaded rod (14) is mounted with a second knob.
4. The impact-resistant electric jack for RV according to claim 3, characterized in that: A limiting groove is provided inside the movable seat (15), and a limiting block fixedly connected to the inner side of the insertion rod (13) is slidably connected inside the limiting groove.
5. The impact-resistant electric jack for RV according to claim 3, characterized in that: Both ends of the movable seat (15) are provided with a first inclined groove (16), the inner side of the first inclined groove (16) is slidably connected with a first limiting plate (17), the inner side of the movable seat (15) is provided with a second inclined groove (18) located on one side of the first inclined groove (16), the inner side of the second inclined groove (18) is slidably connected with a second limiting plate (19), one end of the second limiting plate (19) is fixedly connected to the first limiting plate (17), and the diameter of the first limiting plate (17) is larger than that of the second limiting plate (19).
6. The impact-resistant electric jack for RV according to claim 5, characterized in that: A positioning column (20) is installed on one side of the second limiting plate (19), and movable holes slidably connected to the positioning column (20) are provided at both ends of the insertion rod (13).