Adjustable rocking handle assembly

Abstract

The utility model relates to an adjustable crank handle assembly, which belongs to the technical field of crank handles, and comprises a main sleeve and an extension rod which is connected in the main sleeve in a sliding manner and extends to the top of the main sleeve, a crank handle is arranged on one side of the main sleeve, and a folding structure for folding the crank handle is arranged between the crank handle and the main sleeve. The folding structure comprises a hinge base fixedly connected to the side, close to the crank, of the main sleeve. According to the adjustable rocking handle assembly, by arranging the hinge seat, the connecting block and the fastening bolt, the connecting block and the rocking handle can rotate at the same time, after the fastening bolt is tightened, due to the friction force between the connecting block and the hinge seat, resistance can be generated while the connecting block and the rocking handle can rotate, and the connecting block and the rocking handle can rotate at the same time; the crank can be suspended at any angle, the effect of conveniently folding the crank is achieved, the folded crank can be clamped by arranging the fixing base, the effect of reducing the storage space is achieved, and storage by workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of hand cranks, in particular to an adjustable crank assembly. Background Art

[0002] The hand crank is a widely used mechanical component that can drive the shaft to rotate by shaking.

[0003] The Chinese utility model patent with the announcement number CN210265736U discloses a hand crank, including a mounting seat, a damper, a rotating shaft and a crank, wherein the damper is fixed in the mounting seat, the rotating shaft is passed through the damper, the crank is connected to the rotating shaft, and when the crank is shaken, the rotating shaft is driven to rotate, and when the crank rotates in the opposite direction, the damper applies a damping force to the rotating shaft, a bearing is sleeved on the rotating shaft, a mounting slot is provided in the mounting seat, the bearing is arranged in the mounting slot, the number of the bearings is two, and the two bearings are respectively passed through the front and rear ends of the rotating shaft, the number of the mounting slots is two, and the damper is located between the two mounting slots. The utility model has a good use effect, and can achieve a self-locking effect after stopping shaking, avoiding reverse rotation and preventing the desktop from falling.

[0004] However, during use, the crank handle of the utility model is in a fixed state and cannot be folded. When the staff has completed the use of the hand crank, the hand crank handle cannot be folded, which increases the storage space and cannot meet production needs. Therefore, an adjustable crank handle assembly is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an adjustable crank handle assembly, which has the advantage of being easy to fold the hand crank, and solves the problem that the crank handle is in a fixed state and cannot be folded. When the staff has completed the use of the hand crank, the hand crank cannot be folded, thereby increasing the storage space and failing to meet production needs.

[0006] To achieve the above object, the utility model provides the following technical solutions: an adjustable crank assembly, comprising a main sleeve and an extension rod slidably connected to the inside of the main sleeve and extending to the top thereof, a crank handle is provided on one side of the main sleeve, and a folding structure for folding the crank handle is provided between the crank handle and the main sleeve;

[0007] The folding structure includes an articulated seat fixedly connected to the main sleeve near the crank side, and the crank near the main sleeve has an end fixedly connected to a connecting block extending into the interior of the articulated seat. This side of the articulated seat is threadedly connected to a fastening bolt that passes through the connecting block.

[0008] Furthermore, an anti-slip sleeve is fixedly connected to the outside of the crank, and a fixing seat adapted to the crank is fixedly connected to the side of the main sleeve close to the crank.

[0009] Furthermore, a return spring is fixedly connected inside the extension rod, one end of the return spring is fixedly connected to an elastic block extending to one side of the main sleeve, and a groove matching the elastic block is provided on the surface of the main sleeve.

[0010] Furthermore, a positioning rod extending into the interior of the extension rod is fixedly connected to the inner bottom wall of the main sleeve, and a positioning groove matched with the positioning rod is provided inside the extension rod.

[0011] Furthermore, a mounting sleeve is fixedly connected to the top end of the extension rod, and a matching sleeve extending to the outside of the mounting sleeve is arranged inside the mounting sleeve.

[0012] Furthermore, the top of the mounting sleeve is threadedly connected to a threaded rod extending into the interior of the mounting sleeve, one end of the threaded rod located inside the mounting sleeve is rotatably connected to a clamping plate, and one end of the threaded rod away from the clamping plate is fixedly connected to a rotating handle.

[0013] Furthermore, the clamping plate fits the surface of the matching sleeve, and a non-slip pad is fixedly connected to one side of the clamping plate close to the matching sleeve.

[0014] Compared with the prior art, the utility model provides an adjustable crank assembly, which has the following beneficial effects:

[0015] 1. The adjustable crank assembly, by providing an articulated seat and a connecting block, and then providing a fastening bolt, can make the connecting block rotate together with the crank simultaneously. When the fastening bolt is tightened, due to the friction between the connecting block and the articulated seat, the connecting block and the crank can rotate while generating resistance, so that the crank can be suspended at any angle, achieving the effect of facilitating the folding of the crank. Then, by providing a fixed seat, the folded crank can be stuck, thereby reducing the storage space and facilitating storage for the staff.

[0016] 2. The adjustable crank assembly is provided with a return spring and an elastic block. When the staff slides the extension rod, the main sleeve can squeeze the elastic block, and then the elastic block can be fixed by providing a slot, so that the staff can adjust the total length of the extension rod and the main sleeve conveniently. It is suitable for more usage scenarios, improves the practicality of the device, and solves the problem that the crank handle is in a fixed state and cannot be folded. When the staff completes the use of the hand crank, the hand crank handle cannot be folded, thereby increasing the storage space and failing to meet production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0018] Figure 2 This is a structural side view of the connection block of the utility model;

[0019] Figure 3 For this utility model Figure 1 A is a schematic diagram of the enlarged structure shown;

[0020] Figure 4 This is a structural stereogram of the main sleeve of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the pressing plate of the utility model.

[0022] In the figure: 1 main sleeve, 2 extension rod, 3 crank, 4 hinged seat, 5 connecting block, 6 fastening bolt, 7 anti-slip sleeve, 8 fixing seat, 9 return spring, 10 elastic card block, 11 card slot, 12 positioning rod, 13 positioning slot, 14 installation sleeve, 15 matching sleeve, 16 threaded rod, 17 clamping plate, 18 rotating handle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 In this embodiment, an adjustable crank assembly includes a main sleeve 1 and an extension rod 2 slidably connected to the inside of the main sleeve 1 and extending to the top thereof. A crank 3 is provided on one side of the main sleeve 1. A folding structure for folding the crank 3 is provided between the crank 3 and the main sleeve 1. The folding structure includes an articulated seat 4 fixedly connected to a side of the main sleeve 1 close to the crank 3. An end of the crank 3 close to the main sleeve 1 is fixedly connected to a connecting block 5 extending to the inside of the articulated seat 4. A fastening bolt 6 penetrating the connecting block 5 is threadedly connected to this side of the articulated seat 4.

[0025] Among them, the outside of the crank 3 is fixedly connected with an anti-slip sleeve 7, and the side of the main sleeve 1 close to the crank 3 is fixedly connected with a fixing seat 8 that matches it. The material of the anti-slip sleeve 7 is rubber material, which makes it easy to fold the crank 3. By setting the fixing seat 8, the folded crank 3 can be clamped, thereby reducing the storage space and making it convenient for the staff to store it.

[0026] It should be noted that, by providing the hinged seat 4 and the connecting block 5, and then by providing the fastening bolts 6, the connecting block 5 can be rotated together with the crank 3 at the same time. When the fastening bolts 6 are tightened, due to the friction between the connecting block 5 and the hinged seat 4, the connecting block 5 and the crank 3 can rotate dryly while generating resistance, so that the crank 3 can be suspended at any angle.

[0027] In this embodiment, a reset spring 9 is fixedly connected to the interior of the extension rod 2, one end of the reset spring 9 is fixedly connected to an elastic block 10 extending to one side of the main sleeve 1, the surface of the main sleeve 1 is provided with a slot 11 adapted to the elastic block 10, a positioning rod 12 extending to the interior of the extension rod 2 is fixedly connected on the inner bottom wall of the main sleeve 1, and a positioning groove 13 adapted to the positioning rod 12 is provided inside the extension rod 2.

[0028] The staff can open different numbers of the slots 11 according to actual conditions, and can position the extension rod 2 by setting the positioning rod 12 and the positioning slot 13 .

[0029] It should be noted that by setting the return spring 9 and the elastic block 10, when the staff slides the extension rod 2, the main sleeve 1 can squeeze the elastic block 10, and then by setting the slot 11, the elastic block 10 can be fixed, thereby facilitating the staff to adjust the total length of the extension rod 2 and the main sleeve 1, which is suitable for more usage scenarios.

[0030] In this embodiment, the top end of the extension rod 2 is fixedly connected to a mounting sleeve 14, a matching sleeve 15 extending to the outside of the mounting sleeve 14 is provided inside the mounting sleeve 14, the top of the mounting sleeve 14 is threadedly connected to a threaded rod 16 extending to the inside of the mounting sleeve 14, one end of the threaded rod 16 located inside the mounting sleeve 14 is rotatably connected to a clamping plate 17, and the end of the threaded rod 16 away from the clamping plate 17 is fixedly connected to a rotating handle 18.

[0031] Among them, the clamping plate 17 fits with the surface of the matching sleeve 15, and a non-slip pad is fixedly connected to the side of the clamping plate 17 close to the matching sleeve 15. The anti-slip pad can increase the friction between the clamping plate 16 and the matching sleeve 15, thereby preventing the matching sleeve 15 from slipping during the rotation process. The threaded rod 16 is driven to rotate and move by rotating the rotating handle 18, so that the matching sleeve 15 can be clamped and fixed. At the same time, it is convenient for the staff to install different matching sleeves 15 according to the different shapes of the parts, thereby improving the practicability of the device.

[0032] The working principle of the above embodiment is:

[0033] First, press the elastic block 10 so that the elastic block 10 is located inside the main sleeve 1. At this time, slide the extension rod 2 up and down to extend or shorten the extension rod 2 to an appropriate length, so that the elastic block 10 is popped out and fixed due to the action of the card slot 11. Then the staff rotates the rocker 3 counterclockwise so that the rocker 3 and the main sleeve 1 are in a vertical state. At this time, the staff can fix the matching sleeve 15 inside the installation sleeve 14, and the staff can replace the matching sleeve 15 by turning the rotating handle 18.

[0034] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0036] 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 adjustable crank assembly, comprising a main sleeve (1) and an extension rod (2) slidably connected to the inside of the main sleeve (1) and extending to the top thereof, characterized in that: A crank (3) is provided on one side of the main sleeve (1), and a folding structure for folding the crank (3) is provided between the crank (3) and the main sleeve (1); The folding structure comprises an articulated seat (4) fixedly connected to a side of the main sleeve (1) close to the crank (3); one end of the crank (3) close to the main sleeve (1) is fixedly connected to a connecting block (5) extending into the interior of the articulated seat (4); and a fastening bolt (6) penetrating the connecting block (5) is threadedly connected to this side of the articulated seat (4).

2. The adjustable crank assembly according to claim 1, characterized in that: The outside of the crank (3) is fixedly connected to an anti-slip sleeve (7), and the side of the main sleeve (1) close to the crank (3) is fixedly connected to a fixing seat (8) adapted thereto.

3. The adjustable crank assembly according to claim 1, characterized in that: A return spring (9) is fixedly connected inside the extension rod (2), one end of the return spring (9) is fixedly connected to an elastic block (10) extending to one side of the main sleeve (1), and a groove (11) adapted to the elastic block (10) is provided on the surface of the main sleeve (1).

4. The adjustable crank assembly according to claim 1, characterized in that: A positioning rod (12) extending into the interior of the extension rod (2) is fixedly connected to the inner bottom wall of the main sleeve (1), and a positioning groove (13) matching the positioning rod (12) is provided inside the extension rod (2).

5. The adjustable crank assembly according to claim 1, characterized in that: The top end of the extension rod (2) is fixedly connected to a mounting sleeve (14), and a matching sleeve (15) extending to the outside of the mounting sleeve (14) is arranged inside the mounting sleeve (14).

6. The adjustable crank assembly according to claim 5, characterized in that: The top of the mounting sleeve (14) is threadedly connected to a threaded rod (16) extending into the interior of the mounting sleeve (14); one end of the threaded rod (16) located inside the mounting sleeve (14) is rotatably connected to a clamping plate (17); and one end of the threaded rod (16) away from the clamping plate (17) is fixedly connected to a rotating handle (18).

7. The adjustable crank assembly according to claim 6, characterized in that: The pressing plate (17) fits the surface of the matching sleeve (15), and a non-slip pad is fixedly connected to one side of the pressing plate (17) close to the matching sleeve (15).

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