Reverse hand crank with foldable handle
By designing the foldable inverted handcuffing of the handle, using the combination of limit blocks, stretching springs and other components, the existing inverted handcuffing handle has large space occupancy and easy loss, achieving compact space use and convenient operation.
Patent Information
- Application Number
- CN202420883803.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The existing inverted hand-crank handle takes up too much space, resulting in increased mechanical space, high packaging and transportation costs, and the handle is easily lost and inconvenient to use.
Design a handle foldable inverted handcuff, including handle assembly, crank, tube card and gearbox, to achieve folding of the handle through a combination of limit block, tension spring, folding shaft, compression spring, thread sleeve and ball head pin and fixed to reduce space usage.
The handle is compactly folded and fixed, reducing space occupancy and transportation costs, while improving the convenience and safety of the handle.
Smart Images
Figure CN222331408U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a reverse hand-crank with a foldable handle. Background Art
[0002] When there is no electricity or the motor is damaged, the winch hoist needs to open and close the gate. In many cases, it relies on manual shaking of the reverse hand crank to open and close the gate. During the maintenance process, for safety reasons, the reverse hand crank is also used to assist the maintenance work. There are many types of existing reverse hand cranks, but they all have a common disadvantage, that is, the handle occupies too much space, resulting in excessive mechanical space, and the matching protective cover is also increased, which increases the packaging and transportation costs. There are also some methods that remove the handle for packaging and transportation. Although there is a certain effect, the handle is easy to lose, and the probability of no handle being available in the end is very high. Therefore, the existing reverse hand crank has limitations and needs to be improved. . Utility Model Content
[0003] The purpose of the utility model is to design a reverse hand-crank with a foldable handle.
[0004] The technical solution adopted by the utility model to solve the technical problem is: a reverse hand crank with a foldable handle, comprising: a handle assembly 1, a crank 2, a pipe clamp 3 and a reduction box 4, wherein the pipe clamp 3 is fixed on the crank 2, the crank 2 is connected to the input shaft of the reduction box 4, the handle assembly 1 is connected to the crank 2 by a thread, the handle assembly 1 is composed of a limit block 101, a tension spring 102, a pipe housing 103, a folding shaft 104, a compression spring 105, a threaded sleeve 106, a ball pin 107 The folding shaft 104 is composed of a tension spring 102, a stopper 101 and a fixed shaft 108, a tension spring 102 connects the limit block 101 and the folding shaft 104 together, the folding shaft 104 is inserted into the inner hole of the tube shell 103, the stopper of the limit block 101 is positioned at the rear end of the inner hole of the tube shell 103, the fixed shaft 108 is positioned at the front end of the inner hole of the tube shell 103, the compression spring 105 is positioned on the inner hole of the fixed shaft 108, the ball pin 107 is inserted into the inner hole of the compression spring 105, the ball pin 107 is inserted into the inner hole of the threaded sleeve 106, and the outer thread of the threaded sleeve 106 is connected to the fixed shaft 108 Together, the ball pin 107 can have a certain axial activity space in the space where the threaded sleeve 106 and the fixed shaft 108 are connected, which is enough to prevent the ball pin 107 from getting stuck in the positioning hole of the tube shell 103 when the ball pin 107 is pressed, so that the tube shell 103 can be pulled to the rear end, and after the tension spring 102 is stretched to a certain position, the handle assembly 1 is rotated with the axis pin hole of the fixed shaft 108 as the fulcrum. The handle assembly 1 is folded and stuck on the positioning circle 301 of the tube clamp 3 along the guiding inclined surface 302 of the tube clamp 3, so that the handle assembly 1 is fixed after being folded.
[0005] The utility model is described in detail below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Attached Figure 1 : A main view of a reverse hand-crank working state with a foldable handle.
[0007] Attached Figure 2 : A left view of a reverse hand-crank working state with a foldable handle.
[0008] Attached Figure 3 : A main view of a handle that can be folded in a reverse hand-cranked folding state.
[0009] Attached Figure 4 : A left view of a handle that can be folded in a reverse hand-cranked folding state.
[0010] Attached Figure 5 : A top view of a handle that can be folded in a reverse hand-cranked folding state.
[0011] Attached Figure 6 : A top view of a reverse-crank pipe clamp with a foldable handle.
[0012] Attached Figure 7 : A structural diagram of a reverse crank handle assembly with a foldable handle.
[0013] Attached Figure 8 : A structural diagram of a reverse crank handle group with foldable handles in the pulled-open state.
[0014] In the accompanying drawings: 1—handle assembly, 2—crank, 3—tube clamp, 4—reduction box, 101—limit block, 102—tension spring, 103—tube housing, 104—folding shaft, 105—compression spring, 106—threaded sleeve, 107—ball pin, 108—fixed shaft, 301—positioning circle, 302—guide ramp. DETAILED DESCRIPTION
[0015] The technical solution of the utility model is clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. It is obvious that the described embodiments are only a part of the utility model, rather than all 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 utility model.
[0016] Instructions Figure 1 , attached in the instruction manual Figure 2 , attached in the instruction manual Figure 3 , attached in the instruction manual Figure 4 and the instructions Figure 5 As shown: the pipe clamp 3 is fixed on the crank 2, the crank 2 is connected to the input shaft of the reduction box 4, and the handle assembly 1 is connected to the crank 2 by using threads.
[0017] Instructions Figure 1 and the instructions Figure 2 As shown: the handle assembly 1 is in an unfolded state, at this time, the handle can be held by hand and shaken in the reverse direction to open and close the gate opening and closing machine.
[0018] Instructions Figure 3 , attached in the instruction manual Figure 4 and the instructions Figure 5 As shown: without opening and closing the gate hoist, a reverse hand-crank handle assembly 1 with a foldable handle is clamped in the pipe clamp 3.
[0019] Instructions Figure 6 As shown: a positioning circle 301 and a guiding slope 302 are provided on the pipe clamp 3. When the handle assembly 1 moves along the guiding slope 302 toward the positioning circle 301, the distance between the two guiding slopes 302 of the pipe clamp 3 will be elastically deformed and enlarged due to the thrust transmitted by the handle, so that the handle assembly 1 can be smoothly introduced into the positioning circle 301 and fit together. After that, the guiding slope 302 rebounds to its original state, which will make the handle assembly 1 stuck in the positioning circle 301 of the pipe clamp 3 and cannot be removed without sufficient external force.
[0020] Instructions Figure 7 And the instruction manual Figure 8 As shown: the handle assembly 1 is composed of a limit block 101, a tension spring 102, a tube housing 103, a folding shaft 104, a compression spring 105, a threaded sleeve 106, a ball pin 107 and a fixed shaft 108. The tension spring 102 connects the limit block 101 and the folding shaft 104 together. The folding shaft 104 passes through the inner hole of the tube housing 103. The stopper of the limit block 101 is positioned at the rear end of the inner hole of the tube housing 103. The fixed shaft 108 is positioned at the front end of the inner hole of the tube housing 103. The compression spring 105 is positioned on the inner hole of the fixed shaft 108. The ball pin 107 passes through the inner hole of the compression spring 105. The ball pin 107 passes through the inner hole of the threaded sleeve 106. The outer thread of the threaded sleeve 106 is connected to the fixed shaft 108 Together, the ball pin 107 can have a certain axial activity space in the space where the threaded sleeve 106 and the fixed shaft 108 are connected, which is enough to prevent the ball pin 107 from getting stuck in the positioning hole of the tube shell 103 when the ball pin 107 is pressed, so that the tube shell 103 can be pulled to the rear end, and after the tension spring 102 is stretched to a certain position, the handle assembly 1 can be rotated with the axis pin hole of the fixed shaft 108 as the fulcrum. The handle assembly 1 is folded and stuck on the positioning circle 301 of the tube clamp 3 along the guiding inclined surface 302 of the tube clamp 3, so that the handle assembly 1 is stuck and does not move after being folded.
[0021] Instructions Figure 7As shown: under the elastic force of the compression spring 105, the ball pin 107 pops out freely to the limit position and is stuck in the positioning hole of the tube shell 103, so that the folding shaft 104 cannot be folded. The handle assembly 1 can be held to shake a reverse hand-cranked opening and closing machine with a foldable handle.
[0022] Instructions Figure 8 As shown: the tube housing 103 is freed from the restriction of the ball pin 107, and the tube housing 103 is pulled axially toward the tail end of the handle with force, so that the tension spring 102 is stretched to a certain extent. At the same time, under the elastic force of the compression spring 105, the ball pin 107 pops out freely to the extreme position, so that the tube housing 103 drives the folding shaft 104 fixed thereon to be folded and can be clamped on the tube clamp 3.
[0023] A kind of reverse hand-crank with foldable handle working process: after connecting a kind of reverse hand-crank with foldable handle to a winch hoist, when using a kind of reverse hand-crank with foldable handle to open and close the hoist, first pull out the handle assembly from the pipe clamp 3, make the pipe shell 103 and the fixed shaft 108 concentric, the ball pin 107 compresses the compression spring 105, so that the pipe shell 103 is sleeved on the fixed shaft 108, and the ball pin 107 is freely popped out and stuck in the pin hole of the pipe shell 103, then the handle assembly 1 can be held by hand, and the handle can be opened and closed by shaking the handle. When the reverse hand-crank with foldable handle is not enabled, after pressing the ball pin 107 by hand, the pipe shell 103 is pulled axially toward the tail end of the handle with force, and the ball pin 107 is freely popped out to the limit position, so that the pipe shell 103 drives the folding shaft 104 fixed thereon to be folded and stuck on the pipe clamp 3. A kind of oil cylinder with a gland fixed guide sleeve has reasonable design, compact structure, and convenient operation and use.
Claims
1. A reverse hand crank with a foldable handle, comprising: The handle assembly (1), crank (2), pipe clamp (3) and reduction box (4) are characterized in that: the pipe clamp (3) is fixed on the crank (2), the crank (2) is connected to the input shaft of the reduction box (4), the handle assembly (1) is connected to the crank (2) by a thread, and the handle assembly (1) is composed of a limit block (101), a tension spring (102), a pipe housing (103), a folding shaft (104), a compression spring (105), a threaded sleeve (106), and a ball pin (107). The folding shaft (104) is composed of a tension spring (102) connecting a stop block (101) and a folding shaft (104), the folding shaft (104) is inserted into the inner hole of the tube shell (103), the stopper of the stop block (101) is positioned at the rear end of the inner hole of the tube shell (103), the fixed shaft (108) is positioned at the front end of the inner hole of the tube shell (103), the compression spring (105) is positioned on the inner hole of the fixed shaft (108), the ball pin (107) is inserted into the inner hole of the compression spring (105), the ball pin (107) is inserted into the inner hole of the threaded sleeve (106), and the external thread of the threaded sleeve (106) is connected to the fixed shaft (108). ) are connected together, and the ball pin (107) can have a certain axial movable space in the space where the threaded sleeve (106) and the fixed shaft (108) are connected, so that when the ball pin (107) is pressed, it is enough to prevent the ball pin (107) from being stuck in the positioning hole of the tube housing (103), so that the tube housing (103) can be pulled to the rear end, and after the tension spring (102) is stretched to a certain position, the handle assembly (1) is rotated with the shaft pin hole of the fixed shaft (108) as a fulcrum, and the handle assembly (1) is folded along the guiding inclined surface (302) of the tube clamp (3) and is stuck on the positioning circle (301) of the tube clamp (3), so that the handle assembly (1) is fixed after being folded.