An assembled hand sprocket and assembling method

Abstract

An assembled hand sprocket and an assembling method, the hand sprocket comprising a side plate, a pawl plate, a first intermediate plate and a second intermediate plate arranged between the side plate and the pawl plate; the side plate is a flat plate; the first intermediate plate comprises a first ring and a first concave plate arranged in the middle of the first ring; the second intermediate plate comprises a second ring and a second concave plate arranged in the middle of the second ring; the pawl plate comprises a third ring with pawls and a third concave plate arranged in the middle of the third ring; the outer surface of the first concave plate is tightly attached to the surface of the side plate; the outer surface of the second concave plate is tightly attached to the inner surface of the first concave plate; the outer surface of the third concave plate is tightly attached to the inner surface of the second concave plate; a connecting piece connects the side plate, the first intermediate plate, the second intermediate plate and the pawl plate by penetrating the side plate, the first concave plate, the second concave plate and the third concave plate. The method comprises extrusion and fixation. The hand sprocket has the advantages of increasing the thickness of the magnet plate that can be attracted, improving the reliability of the hand sprocket operation, and reducing the overall thickness of the hand sprocket.

Description

Technical Field

[0001] This invention relates to an assembled hand zipper wheel and its processing method, and particularly to an assembled hand zipper wheel and its installation method that increases the thickness of the iron plate that can be attracted by a magnet. Background Technology

[0002] CN201920417154.9 discloses the currently mainstream hand zipper wheel, but it has three problems: First, magnets can attract...

[0003] The thickness of the iron plate is determined by the thickness of the side plate (i.e., the first circular side plate of this patent), because there is a gap between the first circular side plate (1) and the first wheel (2); secondly, the thickness of the hand zipper wheel is relatively large (also because there is a gap between the first circular side plate (1) and the first wheel (2), so the connection between the first circular side plate, the first wheel, the second wheel, and the second circular side plate can only be made by rivets; thirdly, after the first circular side plate 1 and the first wheel 2 are connected, there is no closed hole between them, and after the second wheel 3 and the second circular side plate 4 are connected, there is also an unclosed hole between them. Because these holes are not closed, when the hand zipper wheel needs to be stopped by external resistance while rotating, the blocking plate is prone to deforming the unclosed holes under force. After a long period of use, if the unclosed holes deform too much, the blocking plate will be trapped in the hand zipper wheel, causing the hand zipper wheel to lose its proper function. See Figure 1 As shown. Summary of the Invention

[0004] This invention provides an assembled hand zipper wheel and its installation method, which can increase the thickness that the magnet plate can attract, improve the reliability of the hand zipper wheel operation, and reduce the overall thickness of the hand zipper wheel.

[0005] The technical solution to achieve the objective of this invention is that an assembled hand zipper wheel includes a side plate and a ratchet plate, and a first intermediate plate and a second intermediate plate are provided between the side plate and the ratchet plate;

[0006] The side plate is a flat plate;

[0007] The first intermediate plate includes a first ring and a first concave plate disposed in the middle of the first ring;

[0008] The second intermediate plate includes a second ring and a second concave plate disposed in the middle of the second ring;

[0009] The pawl plate includes a third ring with pawls and a third concave plate disposed in the middle of the third ring.

[0010] The outer surface of the first concave plate is in close contact with the surface of the side plate;

[0011] The outer surface of the second concave plate is in close contact with the inner surface of the first concave plate;

[0012] The outer surface of the third concave plate is in close contact with the inner surface of the second concave plate;

[0013] The connector passes through the side plate, the first recessed plate, the second recessed plate, and the third recessed plate, connecting the side plate, the first intermediate plate, the second intermediate plate, and the ratchet plate.

[0014] Furthermore, the connecting component is a fixing post provided on the side plate, and the center of the fixing post is hollow.

[0015] Furthermore, the first ring edge is provided with a downward pressing edge, which is in close contact with the surface of the side plate.

[0016] Furthermore, the second ring has an upward pressing edge on its edge, and the pressing edge is in close contact with the lower surface of the third ring.

[0017] Installation methods include compression fixing;

[0018] The aforementioned compression fixing involves passing one end of the fixing post through the first lower concave plate, the second lower concave plate, and the third lower concave plate, respectively, and extending the compression post into the hollow of the fixing post to expand the diameter of the hollow, thereby fixing the side plate, the first intermediate plate, the second intermediate plate, and the ratchet plate together.

[0019] Furthermore, the method also includes the processing of fixed columns;

[0020] The aforementioned fixing column processing utilizes stamping to extrude holes in the side plate in one direction. During the hole-forming process, the extruded part of the side plate protrudes in the extrusion direction and ultimately becomes a centrally hollow fixing column.

[0021] The advantage of this invention is that by modifying the shape of the first intermediate plate, the side plate, the first concave plate of the first intermediate plate, the second concave plate of the second intermediate plate, and the third concave plate of the ratchet plate can be tightly attached together in sequence. Compared with the traditional result, where the thickness of the magnet is determined solely by the thickness of the side plate, the thickness of the magnet is determined by the combined thickness of the side plate, the first intermediate plate, the second intermediate plate, and the ratchet plate. This reduces the thickness of the magnet, or increases the actual attraction force of the magnet when the magnet thickness is the same or slightly smaller, thereby improving the reliability of operating the hand sprocket by magnet.

[0022] At the same time, because there is no gap between the side plate and the first concave plate of the first intermediate plate, the overall thickness of the hand zipper wheel is reduced. With the overall thickness of the hand zipper wheel reduced, the side plate, the first intermediate plate, the second intermediate plate, and the ratchet plate can be connected by a stamping-formed fixing post, which is simpler and cheaper to connect. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the existing technology structure.

[0024] Figure 2 This is a schematic diagram of the assembled modular hand chain wheel.

[0025] Figure 3 This is the front view of the assembled hand chain wheel.

[0026] Figure 4 Right view of the assembled manual chain wheel.

[0027] Figure 5 This is the front view of the side panel.

[0028] Figure 6 This is the right view of the side panel.

[0029] Figure 7 This is the main view of the first intermediate plate.

[0030] Figure 8 This is the right view of the first intermediate plate.

[0031] Figure 9 This is the main view of the second intermediate plate.

[0032] Figure 10 for Figure 9 Schematic diagram of section AA.

[0033] Figure 11 This is the front view of the ratchet plate.

[0034] Figure 12 This is a right view of the ratchet plate.

[0035] Figure 13 This is the structure of the experimental device.

[0036] As shown in the figure, the components are: side plate 1, pawl plate 2, first intermediate plate 3, second intermediate plate 4, fixed column 5, magnetic yoke 6, tension gauge 7, motor 8, pawl 21, third ring 22, third concave plate 23, first ring 31, first concave plate 32, lower pressing edge 33, second ring 41, second concave plate 42, and hand chain wheel A. Detailed Implementation

[0037] like Figure 2 , 3 In 4, a modular hand zipper wheel includes a side plate 1 and a pawl plate 2. A first intermediate plate 3 and a second intermediate plate 4 are provided between the side plate 1 and the pawl plate 2. When the modular hand zipper wheel is in use, the side plate 1 is close to the magnet.

[0038] like Figure 5 , 6 In the middle, the side plate 1 is a flat plate, and preferably, the connecting member is a fixing post 5 provided on the side plate 1, and the center of the fixing post 5 is hollow;

[0039] like Figure 7 , 8 In the above, the first intermediate plate 3 includes a first ring 31 and a first concave plate 32 disposed in the middle of the first ring 31. Preferably, the edge of the first ring 31 is provided with a downward pressing edge 33, such as... Figure 2 In the middle, the lower pressing edge 33 is closely attached to the surface of the side plate 1. The lower pressing edge 33 is integrally set along the outer edge of the first ring 31, which can completely close the outer edge of the joint between the side plate 1 and the first intermediate plate 3, leaving no holes or openings. Without increasing the thickness, the overall strength of the first intermediate plate 3 is enhanced, the deformation under external force is small, and the service life is extended.

[0040] like Figure 9 , 10 In this design, the second intermediate plate 4 includes a second ring 41 and a second concave plate 42 disposed in the middle of the second ring 41. Preferably, the second ring 41 has an upward-facing upper pressing edge 43 on its edge, the upper pressing edge 43 being in close contact with the lower surface of the third ring 22, and the bottom edge of the second concave plate 42 being... Figure 10 As shown, the bottom edge of the second ring 41 is parallel to the bottom edge of the second ring 41. The surface of the second lower concave plate 42 is lower than the surface of the second ring 41. Alternatively, the bottom edge of the second concave plate 42 may not be parallel to the bottom edge of the second ring 41, and may be lower or higher. The upper pressing edge 43 is integrally set along the outer edge of the second ring 41, which can completely close the outer edge of the joint between the pawl plate 2 and the second intermediate plate 4, leaving no holes or openings. This enhances the overall strength of the second intermediate plate 4 without increasing its thickness, resulting in less deformation under external force and extending its service life.

[0041] The pawl plate 2 includes a third ring 22 with a pawl 21 and a third concave plate 23 disposed in the middle of the third ring 22;

[0042] The outer surface of the first concave plate 32 is in close contact with the surface of the side plate 1;

[0043] The outer surface of the second concave plate 42 is in close contact with the inner surface of the first concave plate 32;

[0044] The outer surface of the third concave plate 22 is in close contact with the inner surface of the second concave plate 42;

[0045] The connector passes through the side plate 1, the first lower recessed plate 32, the second lower recessed plate 42, and the third lower recessed plate 23 to connect the side plate 1, the first intermediate plate 3, the second intermediate plate 4, and the ratchet plate 2.

[0046] Installation methods include compression fixing;

[0047] The aforementioned compression fixing involves passing one end of the fixing post 5 through the first concave plate 32, the second concave plate 42, and the third concave plate 23 respectively. The compression post (generally, the outer diameter of the compression post is larger than the inner diameter of the fixing post 5; the appropriate size of the outer diameter of the compression post compared to the inner diameter of the hollow hole in the fixing post 5 can be determined based on the material hardness or ductility) extends into the hollow of the fixing post 5, thereby expanding the diameter of the hollow. This fixes the side plate 1, the first intermediate plate 3, the second intermediate plate 4, and the pawl plate 2 together. Holes for the fixing post 5 to pass through are provided at corresponding positions on the first concave plate 32 of the first intermediate plate 3, the second concave plate 42 of the second intermediate plate 4, and the third concave plate 2 of the pawl plate 2.

[0048] Preferably, the method further includes fixing column processing;

[0049] The fixed column 5 is processed by stamping to extrude holes in the side plate 1 in one direction. More than three holes can be extruded at one time. During the hole forming process, the part of the side plate 1 that is extruded protrudes in the extrusion direction and eventually becomes a hollow fixed column 5. During the extrusion process, the force should be uniform and the speed should be reasonable. Otherwise, it is easy to cause the fixed column 5 to have different heights or the extruded part to separate from the side plate 1.

[0050] The experiment was conducted in two groups. The first group used the existing structure. Figure 1 The structure was used to take 10 samples and label them as X1, X2, ..., X10. The second group adopted the structure of this invention. Figure 2 The structure is as follows: 10 samples are taken and labeled Y1, Y2, ..., Y10. The experimental setup is as follows: Figure 13 As shown, the device includes a magnetic yoke 6 mounted on a fixed frame. In the first set of tests, the hand sprocket A was used. Figure 1 In the existing structure, a simulated gap (ABS plastic plate thickness is 0.3mm) is provided between the first annular side plate on the upper surface of the hand zipper A and the magnetic yoke 6. In the second set of tests, the hand zipper A adopts... Figure 2 In this patented structure, an ABS plastic plate (0.3mm thick) is provided between the upper side plate 1 of the hand zipper A and the magnetic yoke 6 to simulate a gap. A tension gauge 7 and a motor 8 that applies force to the tension gauge 7 are connected to the lower surface of the hand zipper A. The motor 8 is fixed on the fixed frame. During the test, after the motor 8 is powered on, it pulls the tension gauge 7 downward and applies a pulling force to the hand zipper A, causing the hand zipper A to disconnect from the magnetic yoke 6.

[0051] Under the experimental conditions, the magnetic yoke 6 has the same structure, the current flowing through the magnetic yoke 6 is 220V AC, and the magnetic force generated is the same.

[0052]

[0053] While reducing the weight by 500g with existing technology, the electromagnetic attraction generated by the structure of this patent is also superior to that of existing technology, which can fully meet the needs of the current market. In the test, the electromagnetic attraction of existing technology also reached the maximum level. This patent also has space to adjust the attraction. Existing technology is a product developed by our company in 2019, and this patent was created after more than four years of continuous improvement.

Claims

1. A modular hand zipper wheel, characterized in that: The hand zipper wheel includes a side plate and a ratchet plate, and a first intermediate plate and a second intermediate plate are provided between the side plate and the ratchet plate; The side plate is a flat plate; The first intermediate plate includes a first ring and a first concave plate disposed in the middle of the first ring; The second intermediate plate includes a second ring and a second concave plate disposed in the middle of the second ring; The pawl plate includes a third ring with pawls and a third concave plate disposed in the middle of the third ring. The outer surface of the first concave plate is in close contact with the surface of the side plate; there is no gap between the side plate and the first concave plate of the first intermediate plate; The outer surface of the second concave plate is in close contact with the inner surface of the first concave plate; The outer surface of the third concave plate is in close contact with the inner surface of the second concave plate; The connector passes through the side plate, the first recessed plate, the second recessed plate, and the third recessed plate to connect the side plate, the first intermediate plate, the second intermediate plate, and the ratchet plate; The connecting component is a fixing post provided on the side plate, and the center of the fixing post is hollow. In specific installation, it is fixed by compression. The compression fixation is to pass one end of the fixing post through the first lower concave plate, the second lower concave plate, and the third lower concave plate respectively, and the compression post extends into the hollow of the fixing post to expand the diameter of the hollow, that is, to fix the side plate, the first intermediate plate, the second intermediate plate, and the ratchet plate together. When the fixing post is processed, a hole is formed by pressing from the side plate in one direction. During the hole forming process, the part of the side plate that is compressed protrudes in the direction of compression and finally becomes a fixed post with a hollow center.

2. The assembled hand zipper wheel according to claim 1, characterized in that: The first ring edge is provided with a downward pressing edge, which is in close contact with the surface of the side plate.

3. The assembled hand zipper wheel according to claim 1, characterized in that: The second ring has an upward pressing edge on its edge, and the pressing edge is in close contact with the lower surface of the third ring.

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