Speed-adjustable driving mechanism

Abstract

The utility model discloses a speed-adjustable driving mechanism, which relates to the technical field of speed-adjustable motors, and comprises a speed-adjustable motor body mounted at the top of a base, shells arranged on two sides of the top of the base, a buffer assembly arranged between the two shells, four positioning blocks fixedly connected to the top of the base, fixing grooves formed in the outer sides of the positioning blocks, and the fixing grooves are fixedly connected to the top of the base. The bottoms of the two shells are each provided with two positioning grooves, connecting grooves are formed in the positioning grooves, the positioning blocks are arranged in the positioning grooves, the fixing grooves correspond to the connecting grooves, and a hollow long rod is arranged at the top of the speed regulating motor body. The worm gear drives the two-way screw to rotate on the two supporting blocks, the two-way screw is in threaded connection with the two U-shaped rods, the two U-shaped rods move in the opposite directions, the multiple fixing rods penetrate through the multiple connecting grooves to be clamped into the multiple positioning blocks, and rapid installation of the two shells is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of speed-regulating motors, in particular to a speed-regulating driving mechanism. Background Art

[0002] A speed-regulating motor is a motor that changes its speed by changing the number of stages, voltage, current, frequency, etc., so that the motor can achieve higher performance.

[0003] The current publication number is CN217935283U, which is a portable speed-regulating motor. It includes a base and a speed-regulating motor body fixedly mounted on the base. A protective shell is installed on the upper surface of the base. The speed-regulating motor body is located inside the protective shell. Both sides of the top of the protective shell are open structure designs. A U-shaped opening is opened on one side of the protective shell, and the output end of the speed-regulating motor body passes through the inside of the U-shaped opening.

[0004] Although there are many benefits in the above scheme, there are also the following disadvantages: the second connecting bolt is used to fix the connecting plate and install the protective shell on the base. This installation method is relatively cumbersome. At the same time, when protecting the output end of the speed control motor body, the first connecting bolt is also used to fix the protective cover, thereby increasing the operating process of the personnel. Utility Model Content

[0005] The purpose of the utility model is to provide a speed-adjustable drive mechanism to solve the problem proposed in the prior art that the connecting plate is fixed by a second connecting bolt and the protective shell is installed on the base. This installation method is relatively cumbersome. At the same time, when protecting the output end of the speed-regulating motor body, the protective cover is fixed by a first connecting bolt, which increases the operating process of the personnel.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a speed-adjustable driving mechanism, comprising a speed-regulating motor body mounted on the top of a base, shells being provided on both sides of the top of the base, a buffer assembly being provided between the two shells, four positioning blocks being fixedly connected to the top of the base, a fixing groove being provided on the outer side of the positioning block, two positioning grooves being provided on the bottoms of the two shells, a connecting groove being formed inside the positioning groove, the positioning block being provided inside the positioning groove, the fixing groove corresponding to the connecting groove, a hollow long rod being provided on the top of the speed-regulating motor body, connecting blocks being fixedly connected at both ends of the outer side of the hollow long rod, and the connecting blocks being fixedly connected At the top of the shell, a handle is fixedly connected between the two connecting blocks, and sliding grooves are opened on the front and rear sides of the hollow long rod. A bidirectional screw is provided inside the hollow long rod, and a worm gear is fixedly connected to the middle position of the bidirectional screw. The outside of the worm gear is meshed with a worm, and the top of the worm gear passes through the top of the hollow long rod and is rotatably connected to the hollow long rod. Both ends of the outer side of the bidirectional screw are threadedly connected to a U-shaped rod, and both ends of the U-shaped rod pass through two sliding grooves and are slidably connected to the hollow long rod. Both ends of the U-shaped rod are fixedly connected to a fixing rod, one end of the fixing rod passes through the connecting groove and extends into the inside of the fixing groove, and one end of the bidirectional screw is provided with a protective component.

[0007] Preferably, an opening is provided on the outside of one of the shells, and the output end of the speed regulating motor body passes through the opening. The opening is provided so that the output end of the speed regulating motor body can pass through.

[0008] Preferably, the buffer assembly includes two guardrails, both of which are arranged on the front and rear sides of the speed regulation motor body, and both sides of the two guardrails are fixedly connected with sliding plates, and both sides of the two shells are provided with mounting grooves, and the sliding plates are arranged inside the mounting grooves and are slidably connected to the shells, and multiple buffer springs are provided inside the mounting grooves, and the two ends of the multiple buffer springs are respectively fixedly connected to the shell and the sliding plates.

[0009] Preferably, both ends of the outer side of the bidirectional screw are rotatably connected to support blocks, and the two support blocks are fixedly connected to the bottom end of the inner side of the hollow long rod. The setting of the two support blocks provides rotational support for the bidirectional screw.

[0010] Preferably, the protective component includes a threaded sleeve, which is fixedly connected to one end of the bidirectional screw. One end of the threaded sleeve passes through one side of the interior of the hollow long rod and is rotatably connected to the hollow long rod. The threaded sleeve is internally threaded with a threaded rod.

[0011] Preferably, the protective component also includes a fixed plate, which is fixedly connected to one end of the threaded rod, and one side of the fixed plate is fixedly connected to a limiting slide rod, one end of the limiting slide rod passes through one side of the hollow long rod and extends to the inside of the hollow long rod, and the limiting slide rod is slidably connected to the hollow long rod. The setting of the limiting slide rod serves to limit the sliding of the fixed plate.

[0012] Preferably, a protective sleeve is fixedly connected to the bottom end of the fixing plate, and the protective sleeve is sleeved on the outside of the output end of the speed regulating motor body.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This application uses a worm and a worm wheel to mesh, and the worm wheel drives the bidirectional screw to rotate on the two support blocks. The bidirectional screw is threadedly connected to the two U-shaped rods, and the two U-shaped rods move in opposite directions. Multiple fixing rods pass through multiple connecting grooves and are inserted into multiple positioning blocks to achieve rapid installation of the two shells.

[0015] 2. This application is threadedly connected to the threaded rod through a threaded sleeve. The threaded rod drives the protective sleeve through the fixed plate to cover the output end of the speed control motor body, and the limiting slide rod slides on the hollow long rod. This structural design realizes the simultaneous protection of the speed control motor body and the output end of the speed control motor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a speed-adjustable drive mechanism of the utility model;

[0017] Figure 2 This is a schematic structural diagram of a buffer assembly of a speed-adjustable drive mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the base structure of a speed-adjustable drive mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the housing structure of a speed-adjustable drive mechanism of the utility model;

[0020] Figure 5 This is a cross-sectional view of a hollow long rod of a speed-adjustable driving mechanism of the utility model.

[0021] Numbers in the figure: 1. Base; 2. Speed regulating motor body; 3. Housing; 4. Sliding plate; 5. Mounting slot; 6. Buffer spring; 7. Guardrail; 8. Connecting block; 9. Handle; 10. Hollow long rod; 11. Slide slot; 12. Bidirectional screw; 13. Support block; 14. U-shaped rod; 15. Fixed rod; 16. Worm gear; 17. Worm; 18. Threaded sleeve; 19. Threaded rod; 20. Fixed plate; 21. Protective cover; 22. Limiting slide; 100. Positioning block; 101. Fixed slot; 300. Positioning slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not 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 efforts are within the scope of protection of the present invention.

[0023] Example: Figure 1 - Figure 5 As shown, the utility model provides a technical solution of a speed-adjustable driving mechanism, including a speed-regulating motor body 2 installed on the top of a base 1, shells 3 are provided on both sides of the top of the base 1, an opening is provided on the outside of one of the shells 3, the output end of the speed-regulating motor body 2 passes through the opening, a buffer assembly is provided between the two shells 3, four positioning blocks 100 are fixedly connected to the top of the base 1, a fixing groove 101 is provided on the outside of the positioning block 100, two positioning grooves 300 are provided at the bottom of the two shells 3, a connecting groove is formed inside the positioning groove 300, the positioning block 100 is arranged inside the positioning groove 300, the fixing groove 101 corresponds to the connecting groove, a hollow long rod 10 is provided on the top of the speed-regulating motor body 2, and the outer ends of the hollow long rod 10 are fixedly connected to the connecting blocks 8, the connecting block 8 is fixedly connected to the top of the shell 3, and the two connecting blocks 8 are between. A handle 9 is fixedly connected to it, and slide grooves 11 are provided on the front and rear sides of the hollow long rod 10. A bidirectional screw 12 is provided inside the hollow long rod 10, and both ends of the outer side of the bidirectional screw 12 are rotatably connected to support blocks 13. The two support blocks 13 are fixedly connected to the bottom end of the hollow long rod 10. A worm gear 16 is fixedly connected to the middle position of the bidirectional screw 12, and a worm 17 is meshed with the outer side of the worm gear 16. The top of the worm 17 passes through the top of the hollow long rod 10 and is rotatably connected to the hollow long rod 10. Both ends of the outer side of the bidirectional screw 12 are threadedly connected to a U-shaped rod 14. Both ends of the U-shaped rod 14 pass through two slide grooves 11 and are slidably connected to the hollow long rod 10. Both ends of the U-shaped rod 14 are fixedly connected to a fixing rod 15. One end of the fixing rod 15 passes through the connecting groove and extends to the inside of the fixing groove 101. A protective component is provided at one end of the bidirectional screw 12.

[0024] The buffer assembly includes two guardrails 7, both of which are arranged on the front and rear sides of the speed control motor body 2. Sliding plates 4 are fixedly connected on both sides of the two guardrails 7. Mounting grooves 5 are provided on the front and rear sides of the two shells 3. The sliding plates 4 are arranged inside the mounting grooves 5 and are slidably connected to the shells 3. Multiple buffer springs 6 are provided inside the mounting grooves 5, and the two ends of the multiple buffer springs 6 are fixedly connected to the shells 3 and the sliding plates 4 respectively.

[0025] Specifically, align the positioning groove 300 on the shell 3 with the positioning block 100 on the base 1 to position the shell 3. Then, rotate the worm 17, and the worm 17 engages with the worm wheel 16. The worm wheel 16 drives the bidirectional screw 12 to rotate on the two support blocks 13. The bidirectional screw 12 is threadedly connected to the two U-shaped rods 14. The two U-shaped rods 14 move in opposite directions, and multiple fixing rods 15 pass through multiple connecting grooves and are inserted into the multiple positioning blocks 100 to achieve rapid installation of the two shells 3.

[0026] The speed regulating motor body 2 can be protected by two shells 3, two guardrails 7 and protective components. When the two sides of the device collide with other objects during transportation, the cooperation of the two guardrails 7, multiple sliding plates 4 and multiple buffer springs 6 can buffer the impact force and prevent the two guardrails 7 from being deformed by force.

[0027] Example: Figure 1 、 Figure 2 and Figure 5 As shown, the protective component includes a threaded sleeve 18, which is fixedly connected to one end of the bidirectional screw 12, and one end of the threaded sleeve 18 passes through one side of the interior of the hollow long rod 10 and is rotatably connected to the hollow long rod 10. The threaded sleeve 18 is internally threaded with a threaded rod 19, and the protective component also includes a fixed plate 20, which is fixedly connected to one end of the threaded rod 19, and one side of the fixed plate 20 is fixedly connected to a limiting slide 22, one end of the limiting slide 22 passes through one side of the hollow long rod 10 and extends to the interior of the hollow long rod 10, and the limiting slide 22 is slidably connected to the hollow long rod 10. The bottom end of the fixed plate 20 is fixedly connected to a protective sleeve 21, and the protective sleeve 21 is sleeved on the outside of the output end of the speed regulation motor body 2.

[0028] Specifically, when the bidirectional screw 12 rotates to realize the movement of the two U-shaped rods 14 in opposite directions, the bidirectional screw 12 also drives the threaded sleeve 18 to rotate. The threaded sleeve 18 is threadedly connected to the threaded rod 19. The threaded rod 19 drives the protective sleeve 21 through the fixed plate 20 to cover the output end of the speed control motor body 2, and the limiting slide rod 22 slides on the hollow long rod 10. This structural design realizes that the speed control motor body 2 and the output end of the speed control motor body 2 can be protected synchronously.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A speed-adjustable drive mechanism, characterized in that: The invention comprises a base (1) having a speed regulating motor body (2) mounted on the top, a shell (3) provided on both sides of the top of the base (1), a buffer assembly provided between the two shells (3), four positioning blocks (100) fixedly connected to the top of the base (1), a fixing groove (101) provided on the outside of the positioning block (100), two positioning grooves (300) provided on the bottom of the two shells (3), a connecting groove formed inside the positioning groove (300), the positioning block (100) is arranged inside the positioning groove (300), the fixing groove (101) corresponds to the connecting groove, a hollow long rod (10) is provided on the top of the speed regulating motor body (2), the outer ends of the hollow long rod (10) are fixedly connected to connecting blocks (8), the connecting block (8) is fixedly connected to the top of the shell (3), and the two connecting blocks (8) are fixedly connected. A handle (9) is connected, and a slide groove (11) is provided on both the front and rear sides of the hollow long rod (10). A bidirectional screw (12) is provided inside the hollow long rod (10), and a worm wheel (16) is fixedly connected to the middle position of the bidirectional screw (12). The outer side of the worm wheel (16) is meshedly connected with a worm (17), and the top of the worm (17) passes through the top of the inner side of the hollow long rod (10) and is rotatably connected to the hollow long rod (10). Both ends of the outer side of the bidirectional screw (12) are threadedly connected to a U-shaped rod (14), and both ends of the U-shaped rod (14) pass through two slide grooves (11) and are slidably connected to the hollow long rod (10). Both ends of the U-shaped rod (14) are fixedly connected to a fixed rod (15), and one end of the fixed rod (15) passes through the connecting groove and extends into the inside of the fixed groove (101). One end of the bidirectional screw (12) is provided with a protective component.

2. The speed-adjustable driving mechanism according to claim 1, characterized in that: An opening is provided on the outside of one of the shells (3), and the output end of the speed regulating motor body (2) passes through the opening.

3. The speed-adjustable driving mechanism according to claim 1, characterized in that: The buffer assembly includes two guardrails (7), both of which are arranged on the front and rear sides of the speed regulating motor body (2), and both sides of the two guardrails (7) are fixedly connected with sliding plates (4), and both sides of the two shells (3) are provided with mounting grooves (5), and the sliding plates (4) are arranged inside the mounting grooves (5) and are slidably connected to the shell (3), and a plurality of buffer springs (6) are arranged inside the mounting grooves (5), and the ends of the plurality of buffer springs (6) are fixedly connected to the shell (3) and the sliding plates (4) respectively.

4. The speed-adjustable driving mechanism according to claim 1, characterized in that: Both ends of the outer sides of the bidirectional screw (12) are rotatably connected to support blocks (13), and the two support blocks (13) are fixedly connected to the inner bottom end of the hollow long rod (10).

5. The speed-adjustable driving mechanism according to claim 1, characterized in that: The protective assembly includes a threaded sleeve (18), the threaded sleeve (18) is fixedly connected to one end of the bidirectional screw (12), one end of the threaded sleeve (18) passes through one side of the interior of the hollow long rod (10) and is rotatably connected to the hollow long rod (10), and the threaded sleeve (18) is internally threadedly connected to the threaded rod (19).

6. The speed-adjustable driving mechanism according to claim 5, characterized in that: The protective assembly further comprises a fixing plate (20), wherein the fixing plate (20) is fixedly connected to one end of the threaded rod (19), and one side of the fixing plate (20) is fixedly connected to a limiting slide rod (22), and one end of the limiting slide rod (22) passes through one side of the hollow long rod (10) and extends into the interior of the hollow long rod (10), and the limiting slide rod (22) is slidably connected to the hollow long rod (10).

7. The speed-adjustable driving mechanism according to claim 6, characterized in that: The bottom end of the fixed plate (20) is fixedly connected to a protective sleeve (21), and the protective sleeve (21) is sleeved on the outside of the output end of the speed regulating motor body (2).

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