L-shaped electric pull rod

Abstract

The utility model discloses an L-shaped electric pull rod, and relates to the technical field of electric pull rods, the L-shaped electric pull rod comprises a main shell, a worm fixing structure, a worm gear fixing structure, a damper structure, a fixed end ball socket structure and a movable end ball socket structure, the main shell is of a split structure, and the main shell is provided with a transverse channel and a vertical channel; the transverse channel is communicated with the vertical channel, the worm fixing structure is installed in the vertical channel, the worm gear fixing structure is installed in the transverse channel, the fixed end ball socket structure is installed at one end of the worm gear fixing structure, and the movable end ball socket structure is installed at the end, away from the fixed end ball socket structure, of the worm gear fixing structure. The damper structure is coaxially installed on the worm gear fixing structure. The structure has structural transmission and design stability, meets the requirement for large tensile / compressive strength, and is convenient to assemble and disassemble due to the split structure.

Description

Technical Field

[0001] The present application relates to the technical field of electric pull rods, and in particular to an L-shaped electric pull rod. Background Art

[0002] As a convenient transport tool, electric pull rods are increasingly used in industrial production and daily life. While simple and practical, traditional manual pull rods are inefficient when handling heavy objects and can easily cause excessive physical exertion for the operator. In recent years, advances in motor and battery technology have made electric pull rods a mainstream choice in the market.

[0003] Electric push rods use electric push rods to lift and move heavy objects. Their advantages are a relatively simple structure and low cost. Their disadvantages are limited push rod travel, making them unsuitable for long-distance transport and limiting their load capacity. Electric winch lifts use an electric winch to wind a wire rope to lift heavy objects. Their advantages are greater lift heights, longer transport distances, and a strong load capacity. Their disadvantages are their large size and weight, making them difficult to carry.

[0004] The existing electric pull rods still have some problems in terms of overall structural design stability, ease of installation and disassembly, tensile / compressive strength, etc., and further improvement is urgently needed. Utility Model Content

[0005] In order to improve the overall structural stability, ease of loading and unloading, and tensile / compressive strength, etc., the present application provides an L-shaped electric pull rod.

[0006] The present application provides an L-shaped electric pull rod adopting the following technical solution:

[0007] An L-shaped electric pull rod includes a main housing, a worm fixing structure, a worm gear fixing structure, a damper structure, a fixed end ball socket structure and a movable end ball socket structure. The main housing is a split structure. The main housing has a transverse channel and a vertical channel. The transverse channel and the vertical channel are connected. The worm fixing structure is installed in the vertical channel, the worm gear fixing structure is installed in the transverse channel, the fixed end ball socket structure is installed at one end of the worm gear fixing structure, the movable end ball socket structure is installed at the end of the worm gear fixing structure away from the fixed end ball socket structure, and the damper structure is coaxially installed on the worm gear fixing structure.

[0008] By adopting the above technical solution, the worm fixed structure is driven by the motor to transmit, and the worm fixed structure drives the meshing worm wheel fixed structure to link, and the worm fixed structure and the worm wheel fixed structure are installed in the vertical channel and the transverse channel in the main shell, so that the overall structure is more compact and has good self-locking performance. The transmission is smooth and improves the overall stability. The damper structure reduces the vibration between the structures and shortens the dead zone of the pull rod. The fixed end ball socket structure improves the strength of the pull rod and reduces the dead zone to meet the greater tensile strength requirements. The movable end ball socket structure also reduces the length of the dead zone.

[0009] Optionally, the worm gear fixing structure includes a screw, a worm gear shaft, a bearing and a worm gear, the screw is rotatably arranged in the transverse channel, the worm gear is mounted on the screw, and the bearings located on both sides of the worm gear are mounted on the screw.

[0010] By adopting the above technical solution, when the screw is subjected to transmission force, the worm wheel on the screw moves in conjunction with the screw, and the bearings on both sides of the worm wheel limit it. There are two worm wheel shafts, and the worm wheel shafts and the screw are engaged for transmission, and the worm wheel is tightly installed on the two worm wheel shafts.

[0011] Optionally, the worm fixing structure includes a worm, a claw coupling and a rubber buffer pad, the worm is installed in a vertical channel, the worm and the worm wheel are meshed, the rubber buffer pad is clamped on the worm, and the claw coupling is installed at the end of the rubber buffer pad away from the worm.

[0012] By adopting the above technical solution, the rubber buffer pad reduces vibration, improves stability and safety, and the claw coupling is driven by the driving source motor to drive the worm in the vertical channel.

[0013] Optionally, the damper structure is a friction damper.

[0014] By adopting the above technical solution, most of the internal parts of the traditional friction damper are shared with the electric support rod, shortening the dead zone distance of the pull rod.

[0015] Optionally, the fixed end ball socket structure includes a metal ball socket bracket, a first ball socket, a fixed end cover and an assembly shell, the assembly shell is threadedly connected to the main shell, the fixed end cover and the assembly shell are threadedly fastened, the metal ball socket bracket is clamped on the fixed end cover, the first ball socket and the metal ball socket bracket are fastened by screws, and the fixed end cover of the fixed end ball socket structure has a circle of teeth on it, which can keep the main shell at a fixed angle after being installed in conjunction with the main shell.

[0016] By adopting the above technical solution, the first ball socket is installed on the metal ball socket bracket. The metal ball socket bracket is L-shaped, which improves the installation stability and is easy to install. The fixed end cover, the assembly shell and the main shell are tightly matched with each other by threads, which improves the installation convenience. The overall structure of the fixed end reduces the dead zone spacing and improves the strength to meet the requirements of different larger tensile strengths.

[0017] Optionally, the movable end ball socket structure includes a spring fixing seat, a second ball socket and an inner support tube, the inner support tube is threadedly connected to the main shell, the inner support tube and the screw are rotationally matched, the second ball socket and the inner support tube are threadedly matched, and the spring fixing seat is clamped on the second ball socket.

[0018] By adopting the above technical solution, the second ball and socket is locked on the inner support tube in a threaded manner, and the spring fixing seat cooperates with the existing spring to further lock it axially.

[0019] Optionally, the spring fixing seat is a split structure.

[0020] By adopting the above technical solution, the split structural design can make installation and disassembly more convenient.

[0021] Optionally, the main shell includes a first shell and a second shell, the first shell and the second shell have the same shape and specifications, the first shell and the second shell are integrally formed with grid-shaped reinforcing ribs inside, and the first shell and the second shell are fastened by screws.

[0022] By adopting the above technical solution, the first shell and the second shell are locked together and fastened with multiple screws, making the main shell more convenient to install and disassemble.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The worm wheel fixing structure and the worm fixing structure of the utility model are more compact in overall structural design, have good self-locking ability, and the transmission has higher stability;

[0025] 2. The main shell is a split structure, which is more convenient for installation and disassembly. The fixed end ball socket structure and the movable end fixed ball socket structure reduce the dead zone in the pull rod structure design to meet the demand for greater tensile / compressive strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 This is a schematic diagram showing the overall structure of this application.

[0028] Figure 2 This is a cross-sectional view showing the present application.

[0029] Figure 3 This is a partial schematic diagram showing the ball and socket structure of the movable end of this application.

[0030] Figure 4 It is an exploded view showing the overall structure of this application.

[0031] Figure 5 This is a partial schematic diagram showing the worm fixing structure of this application.

[0032] Figure numerals: 1. Main housing; 2. Worm fixing structure; 3. Worm wheel fixing structure; 4. Fixed end ball socket structure; 5. Movable end ball socket structure; 6. Horizontal channel; 7. Vertical channel; 31. Screw; 32. Worm wheel shaft; 33. Bearing; 34. Worm wheel; 21. Worm; 22. Clamping claw coupling; 23. Rubber buffer pad; 41. Metal ball socket bracket; 42. First ball socket; 43. Fixed end cover; 44. Assembly housing; 51. Spring fixing seat; 52. Second ball socket; 53. Inner support tube; 11. First housing; 12. Second housing; 8. Damper structure. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-5 This application is described in further detail.

[0034] The embodiment of the present application discloses an L-shaped electric pull rod.

[0035] Reference Figure 1 , including a main shell 1, a worm fixing structure 2, a worm wheel fixing structure 3, a damper structure 8, a fixed end ball socket structure 4 and a movable end ball socket structure 5. The main shell 1 is a left-right split structure. The main shell 1 includes a first shell 11 and a second shell 12. The first shell 11 and the second shell 12 have the same shape and specifications. The first shell 11 and the second shell 12 are integrally formed with a grid-shaped reinforcing rib inside. The first shell 11 and the second shell 12 are fastened by screws. After the first shell 11 and the second shell 12 are assembled, they are locked with 8 self-tapping screws. The split structure design makes the assembly of parts more convenient.

[0036] See also Figure 4As shown, the main housing 1 has a transverse channel 6 and a vertical channel 7, the transverse channel 6 and the vertical channel 7 are connected, the worm fixing structure 2 is installed in the vertical channel 7, the worm gear fixing structure 3 is installed in the transverse channel 6, the fixed end ball socket structure 4 is installed at one end of the worm gear fixing structure 3, the movable end ball socket structure 5 is installed at the end of the worm gear fixing structure 3 away from the fixed end ball socket structure 4, and the damper structure 8 is coaxially installed on the worm gear fixing structure 3.

[0037] See also Figure 4 As shown, the worm gear fixing structure 3 includes a screw 31, a worm gear shaft 32, a bearing 33 and a worm gear 34. The screw 31 is rotatably arranged in the transverse channel 6, and the worm gear 34 is installed on the screw 31. The bearings 33 located on both sides of the worm gear 34 are installed on the screw 31. The worm gear 34 is fixed with two bearings 33, which improves the stability of the fitting clearance with the worm 21.

[0038] See also Figure 5 As shown, the worm fixing structure 2 includes a worm 21, a claw coupling and a rubber buffer pad 23. The worm 21 is installed in the vertical channel 7. The worm 21 and the worm wheel 34 are meshed. The rubber buffer pad 23 is clamped on the worm 21. The claw coupling is installed at the end of the rubber buffer pad 23 away from the worm 21. Two bearings 33 are used to support the two sides of the worm 21. The motor is connected through the claw coupling. The rubber buffer pad 23 reduces the buffering vibration caused by the motor. The driving source is an external existing technology. The driving source adopts a control motor. The extended shaft of the control motor is driven by the claw coupling to drive the worm 21. The worm 21 drives the worm wheel 34 to drive, and the screw 31 connected to the worm wheel 34 is driven.

[0039] join Figure 2 As shown, the damper structure 8 is a traditional friction damper. Most of the internal parts of the friction damper are shared with the electric support rod, shortening the dead zone spacing of the pull rod.

[0040] See also Figure 4As shown, the first ball socket 42 is rubber-coated and directly inserted into the left and right split shells. It is maintained by friction and can only withstand a maximum force of 3000N. When the pulling force exceeds 3000N, the shell will be damaged, which is insufficient to meet the greater tensile strength requirements. At the same time, the first ball socket 42 is wrapped with soft rubber, and manual opening and closing of the door will cause abnormal noise. In this embodiment, a fixed end ball socket structure 4 is adopted, which includes a metal ball socket bracket 41, a first ball socket 42, a fixed end cover 43 and an assembly shell 44. The assembly shell 44 is threadedly connected to the main shell 1. The fixed end cover 43 and the assembly shell 44 are threadedly fastened, and a circle of teeth integrally formed on the fixed end cover 43 cooperates with the assembly shell 44 to meet the installation angle requirements of the first ball socket 42 for different vehicle models; to meet the customer's 4000N tensile strength requirements, the metal ball socket bracket 41 is clamped on the fixed end cover 43, and the first ball socket 42 and the metal ball socket bracket 41 are fastened by using flat head screws, which solves the problem of weak strength at the connection between the left and right split main shells 1 and the first ball socket 42, reduces the dead zone spacing and increases the strength.

[0041] See also Figure 3 As shown, the movable end ball-and-socket structure 5 includes a spring retainer 51, a second ball-and-socket 52, and an inner support tube 53. The inner support tube 53 is threadedly connected to the main housing 1. The inner support tube 53 and the screw rod 31 are rotatably engaged. The second ball-and-socket 52 and the inner support tube 53 are threadedly engaged. The spring retainer 51 is clamped to the second ball-and-socket 52. The spring retainer 51 also has a symmetrical split structure to reduce the dead zone length. The second ball-and-socket 52 and the spring retainer 51 can rotate to facilitate adjustment of the angle of the second ball-and-socket 52.

[0042] The implementation principle of an L-shaped electric pull rod in an embodiment of the present application is: after the electric pull rod is driven, the control motor drives the worm 21 to transmit, and the worm 21 drives the mutually meshing worm wheels 34 to transmit the transmission force of the worm 21 in the vertical channel 7 to the worm wheel 34, so that the pull rod can be transmitted in the horizontal channel 6. The overall structure is installed in the split main shell 1, which makes installation and disassembly more convenient. At the same time, the structure is relatively compact, has a self-locking function, and has good transmission stability. The fixed end ball socket structure 4 and the movable end ball socket structure 5 reduce the dead zone, meet the greater tensile / compressive strength requirements, and the overall structure after assembly is light and flexible.

[0043] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An L-shaped electric pull rod, characterized by: The invention comprises a main housing (1), a worm fixing structure (2), a worm wheel fixing structure (3), a damper structure (8), a fixed end ball socket structure (4) and a movable end ball socket structure (5); the main housing (1) is a split structure; the main housing (1) has a transverse channel (6) and a vertical channel (7); the transverse channel (6) and the vertical channel (7) are connected; the worm fixing structure (2) is installed in the vertical channel (7); the worm wheel fixing structure (3) is installed in the transverse channel (6); the fixed end ball socket structure (4) is installed at one end of the worm wheel fixing structure (3); the movable end ball socket structure (5) is installed at one end of the worm wheel fixing structure (3) away from the fixed end ball socket structure (4); and the damper structure (8) is coaxially installed on the worm wheel fixing structure (3).

2. The L-shaped electric pull rod according to claim 1, characterized in that: The worm gear fixing structure (3) comprises a screw (31), a worm gear shaft (32), a bearing (33) and a worm gear (34); the screw (31) is rotatably arranged in the transverse channel (6); the worm gear (34) is mounted on the screw (31); and the bearings (33) located on both sides of the worm gear (34) are mounted on the screw (31).

3. The L-shaped electric pull rod according to claim 2, characterized in that: The worm fixing structure (2) comprises a worm (21), a claw coupling and a rubber buffer pad (23); the worm (21) is installed in the vertical channel (7); the worm (21) and the worm wheel (34) are meshed; the rubber buffer pad (23) is clamped on the worm (21); and the claw coupling is installed on one end of the rubber buffer pad (23) away from the worm (21).

4. The L-shaped electric pull rod according to claim 3, characterized in that: The damper structure (8) is a friction damper.

5. The L-shaped electric pull rod according to claim 1, characterized in that: The fixed end ball socket structure (4) comprises a metal ball socket bracket (41), a first ball socket (42), a fixed end cover (43) and an assembly shell (44); the assembly shell (44) is threadedly connected to the main shell (1); the fixed end cover (43) and the assembly shell (44) are threadedly fastened; the metal ball socket bracket (41) is clamped on the fixed end cover (43); the first ball socket (42) and the metal ball socket bracket (41) are fastened by screws; the fixed end cover (43) of the fixed end ball socket structure has a circle of teeth on it, and after being mounted in conjunction with the main shell (1), the main shell (1) can be kept at a fixed angle.

6. The L-shaped electric pull rod according to claim 5, characterized in that: The movable end ball socket structure (5) comprises a spring fixing seat (51), a second ball socket (52) and an inner support tube (53); the inner support tube (53) is threadedly connected to the main housing (1); the inner support tube (53) and the screw rod (31) are rotationally matched; the second ball socket (52) and the inner support tube (53) are threadedly matched; and the spring fixing seat (51) is clamped on the second ball socket (52).

7. The L-shaped electric pull rod according to claim 6, characterized in that: The spring fixing seat (51) is a split structure.

8. The L-shaped electric pull rod according to claim 1, characterized in that: The main shell (1) comprises a first shell (11) and a second shell (12); the first shell (11) and the second shell (12) have the same shape and specifications; the first shell (11) and the second shell (12) are integrally formed with grid-shaped reinforcing ribs inside; the first shell (11) and the second shell (12) are fastened by screws.

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