A foldable snow shovel

Abstract

A foldable snow shovel comprises a shovel head, a connecting rod assembly and a handle, a first connecting rod and a second connecting rod of the connecting rod assembly are rotationally connected through a joint part, the joint part is provided with a first rotation disc and a second rotation disc which are mutually abutted and have coinciding rotation axes. The first rotation disc is provided with a locking piece which is movable along the axis, a plurality of circumferentially spaced locking columns are protruded from the locking piece towards the second rotation disc, the second rotation disc is correspondingly provided with locking holes, a reset spring is arranged between the locking piece and the first rotation disc to drive the locking columns to be inserted into the locking holes, and the joint part is further provided with an operation part which can drive the locking piece to be separated from the locking columns. Through the cooperation of the locking columns and the different locking holes, multi-angle fixation is realized, the limitation of only two angles in the prior art is broken, each angle can be stably locked, and the abutted structure of the first rotation disc and the second rotation disc can form effective protection to improve the problem that the rotating assembly is easily eroded.

Description

Technical Field

[0001] This utility model relates to the field of manual tool technology, specifically to a foldable snow shovel. Background Technology

[0002] In outdoor work, camping, emergency rescue, and other scenarios, the performance of folding shovels, as portable digging tools, hinges on the protection and structural stability of their rotating connection parts. Existing folding shovels often employ foldable linkage structures to achieve portability, but the trade-off between the protection of the rotating connection components and the flexibility of angle adjustment has always been a pain point in the industry.

[0003] Taking the Chinese utility model patent "A Folding Shovel" with application number 201820714930.7 (authorization announcement number CN208143730U) as an example, this patent protects the rotating connection assembly between the first and second connecting rods by setting a movable sleeve. The sleeve, through elastic locking pins and different locking holes, can switch between two states: "covering the rotating assembly" and "exposing the rotating assembly." Its rotating connection assembly consists of a first connecting block, a second connecting block, a rotating block, and double rotating shafts. The folding function is achieved through the cooperation of an L-shaped transition groove with the rotating block. However, this solution still has some shortcomings, which are detailed below:

[0004] 1. Limited angle adjustment range: Due to the structural limitations of the L-shaped adapter groove and rotating block, it can only switch between two main angles: unfolding and folding. It cannot achieve stable fixation of intermediate angles such as 90° vertical, and cannot meet the multi-angle positioning needs of complex operation scenarios (such as slope cleaning and excavation at different depths), resulting in poor functional adaptability.

[0005] 2. Incomplete protection of the sleeve: The sleeve is only fixed by the second locking hole to cover the rotating component when it is unfolded. When folded, the rotating component is completely exposed. Moreover, since the sleeve only has two locking holes, it cannot protect the rotating component at intermediate angles such as 90°, making it susceptible to dust and moisture corrosion, which affects its service life.

[0006] 3. Uneven Fixing Reliability: The elastic locking pin is only designed with a fixing structure for two positions of the sleeve rod. Its double rotating shaft and L-shaped transition groove cooperation structure makes it impossible to achieve stable locking through the positioning component in the non-deployed state. There is no equal fixing mechanism for the angle adjustment of the rotating component. The structure is not stable enough in the non-deployed state and is prone to shaking during operation.

[0007] In summary, the core drawback of existing folding shovels lies in their structural design, which, limited by the dual-axis and L-shaped transition groove, only allows for fixed angles of unfolding and folding. This fails to meet operational needs at intermediate angles, such as 90° vertical, and the sleeve protection cannot cover multi-angle adjustment scenarios, making it difficult to adapt to diverse operational requirements. Therefore, it is imperative to develop a folding shovel that can overcome angle limitations, provide comprehensive protection, and maintain stable fixation at all angles. Utility Model Content

[0008] The technical problem to be solved by this utility model is to provide a foldable snow shovel that can be set with multiple positioning angles and can be effectively fixed under different rotation angles, in view of the above-mentioned technical status.

[0009] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the foldable snow shovel includes a shovel head, a connecting rod assembly connected to the shovel head, and a handle connected to the connecting rod assembly. The connecting rod assembly includes a first connecting rod and a second connecting rod rotatably connected by a joint. The joint includes a first rotating disk and a second rotating disk that are mated to each other and whose rotation axes coincide. The first rotating disk is connected to the end of the first connecting rod, and the second rotating disk is connected to the end of the second connecting rod.

[0010] The first rotating disk is provided with a locking element, which is constrained to move only along the rotation axis;

[0011] The locking member has a plurality of locking pins that are spaced apart circumferentially on the side facing the second rotating disk;

[0012] The second rotating disk has a plurality of locking holes for the insertion of locking pins;

[0013] A return spring is provided between the locking member and the first rotating disk, and its elastic force drives the locking pin to insert into the locking hole;

[0014] The joint is provided with an operating part, which is configured to respond to an external operating force and drive the locking member to compress the return spring so that the locking pin disengages from the locking hole.

[0015] To improve the stability and accuracy of the locking pin movement and ensure the precision of the locking engagement, preferably, the mating surface between the first rotating disk and the second rotating disk is provided with multiple guide holes, each guide hole being correspondingly provided with a locking pin, and the extension direction of each guide hole being parallel to the rotation axis of the first rotating disk, so as to guide the movement of the locking pin.

[0016] To optimize the structural strength and force uniformity of the locking component, ensure the synchronous action of multiple locking pins, and stably apply the elastic force of the return spring to the locking component, while achieving a compact structural layout, preferably, the locking component includes a base located in the middle, and four locking pins are provided, which are evenly spaced around the base in a circumferential direction. Each locking pin is fixed to the base by a radially extending connecting rib. The mating surface between the first rotating disk and the second rotating disk is also provided with a mounting cavity that can accommodate the base. Each guide hole is correspondingly arranged around the outer periphery of the mounting cavity, and a clearance groove is provided between each guide hole and the mounting cavity to allow the connecting rib to move. The two ends of the return spring abut against the bottom wall of the base and the mounting cavity, respectively.

[0017] To provide a convenient operating method and ensure reliable driving of the locking element to move along the rotation axis for unlocking, preferably, the operating part includes a button, which is mounted on the second rotating disk, with its operating end exposed on the outer surface of the second rotating disk and constrained to move only along the rotation axis of the second rotating disk, and able to maintain abutting engagement with the locking element; when the operating end of the button is in the pressed state, it can directly push the locking element to move and compress the return spring.

[0018] To enhance the stability of the button installation and prevent accidental detachment, while ensuring that the pressing force of the button can be effectively transmitted to the locking member, preferably, the second rotating disk is provided with a first groove for accommodating the button, the bottom of the button extends with a pin, the bottom of the first groove is provided with a socket for the pin to be inserted, and the side of the pin is provided with a buckle to prevent the pin from disengaging upward from the socket; the bottom of the pin can abut against the base of the locking member, and when the button is pressed, it can drive the locking member to move along the rotation axis.

[0019] To achieve a stable coaxial rotational connection between the first and second rotating disks, and to conceal and store the bolts and nuts to ensure structural compactness, preferably, the first and second rotating disks are coaxially connected by bolts, each having a shaft hole for the bolt to pass through; the first rotating disk has a second groove, which, along with the first groove, can accommodate two nuts of the bolt, and both the first and second grooves are coaxially arranged with the shaft hole, with the diameter of the shaft hole being larger than the bolt's shank diameter to allow relative rotation between the first and second rotating disks; the locking element also has a through hole for the bolt to pass through; the bolt is confined within the first and second grooves by two nuts, respectively, so that the first and second rotating disks remain axially fitted and can rotate relative to each other.

[0020] To limit the relative rotation angle between the first and second rotating disks, prevent excessive rotation, and ensure reliable operation within a preset 180° range, preferably, a limiting block is provided on the mating surface of the first rotating disk, and a first limiting wall and a second limiting wall adapted to the limiting block are provided on the mating surface of the second rotating disk; the first limiting wall and the second limiting wall are arranged circumferentially at intervals, and the interval angle between them is 180°. Through the abutting cooperation between the limiting block and the first limiting wall and the second limiting wall, the relative rotation angle range between the first and second rotating disks can be constrained to 180°.

[0021] In order to effectively protect the mating surfaces of the first and second rotating disks, prevent dust, moisture and other debris from intruding and affecting the rotation and locking performance, and extend the service life, preferably, the edge of the mating surface of the first or second rotating disk is provided with a ring of extended edge extending towards the other, and the corresponding other rotating disk is provided with a stepped groove adapted to the extended edge. The protection of the mating surface is achieved by the cooperation of the extended edge and the stepped groove.

[0022] To facilitate the secure connection of the first connecting rod and the second connecting rod to the first rotating disk and the second rotating disk respectively, and to ensure the perpendicularity and structural stability of the connection parts, preferably, the first rotating disk is provided with a first sleeve and the second rotating disk is provided with a second sleeve; the first sleeve is used to fit the first connecting rod and the second sleeve is used to fit the second connecting rod, and both the first sleeve and the second sleeve are parallel to the mating surface and perpendicular to the rotation axis.

[0023] In order to improve the portability and functionality of the product by creating a space to accommodate auxiliary components by utilizing the eccentric setting of the sleeve when the first connecting rod and the second connecting rod are in the folded state, preferably, the central axis of the first sleeve is offset from the rotation axis of the first rotating disk, and the central axis of the second sleeve is offset from the rotation axis of the second rotating disk; when the first connecting rod and the second connecting rod are in the folded state, the above-mentioned offset setting creates a storage space between the first connecting rod and the second connecting rod that can accommodate auxiliary components.

[0024] To enhance the appearance and protect the components within the second groove from debris, preferably, the second groove is also covered with a decorative cover.

[0025] Compared with the prior art, the advantages of this utility model are as follows: A first rotating disk and a second rotating disk are arranged at the joint of the connecting rod assembly, with their rotation axes coinciding. A locking member that can only move along the rotation axis is provided on the first rotating disk. Multiple locking pins are protruding from the side of the locking member facing the second rotating disk and spaced apart circumferentially. Multiple locking holes for inserting the locking pins are correspondingly provided on the second rotating disk. A return spring is provided between the locking member and the first rotating disk to drive the locking pins into the locking holes. Furthermore, an operating part is provided on the joint to drive the locking member to compress the return spring and disengage the locking pins from the locking holes. Because the locking pins… The locking holes are spaced circumferentially, and the locking pins can be inserted into the locking holes at different positions by rotating the first and second rotating disks, achieving multi-angle fixation. This breaks through the limitation of existing technologies that can only be opened and folded at two angles, meeting the operational needs of intermediate angles such as 90° vertical. At the same time, the cooperation between the locking pins and the locking holes, as well as the elastic force of the return spring, can achieve stable locking in all angle states, improving the structural stability in the non-opening state and preventing shaking during operation. Furthermore, the docking structure of the first and second rotating disks provides basic protection for the rotating connection parts, improving the problem of easy corrosion of rotating components in existing technologies. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of this embodiment (the first connecting rod and the second connecting rod are in a 180° unfolded state);

[0027] Figure 2 This is a schematic diagram of the decomposed state structure of this embodiment;

[0028] Figure 3 This is a partial cross-sectional view of this embodiment (the locking pin of the locking member is in the upward locking state);

[0029] Figure 4 This is a partial cross-sectional view of this embodiment (the locking pin of the locking member is in the downward disengaged state);

[0030] Figure 5 This is a three-dimensional structural diagram of this embodiment (the first connecting rod and the second connecting rod are in a folded state at 0°);

[0031] Figure 6 This is a three-dimensional structural diagram of this embodiment (the first connecting rod and the second connecting rod are in a 90° unfolded state);

[0032] Figure 7 This is a schematic diagram of the structure for placing auxiliary tools when the device is in a 0° folded state according to this embodiment;

[0033] Figure 8 This is a schematic diagram of the three-dimensional structure of the first rotating disk 4 in this embodiment;

[0034] Figure 9This is a schematic diagram of the three-dimensional structure of the second rotating disk 5 in this embodiment;

[0035] Figure 10 This is a three-dimensional structural diagram of the locking component in this embodiment. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0037] Figures 1-10 The figure shown is the preferred embodiment of this utility model.

[0038] The foldable snow shovel in this embodiment mainly includes a shovel head 1, a connecting rod assembly 2, a handle 3, a first rotating disk 4, a second rotating disk 5, a locking component 6, a return spring 7, an operating part 8, a bolt 9, a first sleeve 13, a second sleeve 14, and a decorative cover 16, etc. It aims to solve the problems of limited angle adjustment range, incomplete protection of rotating components, and insufficient reliability of fixed position in non-expanded state of existing folding shovels. Through the synergistic effect of rotating disk docking structure, multi-angle locking structure and comprehensive protection design, it achieves multi-angle stable positioning, all-angle protection and convenient operation.

[0039] The structure and connection relationship of each component in this embodiment are as follows:

[0040] Shovel 1: Reference Figures 1 to 3 As shown, the shovel head 1 is a flat shovel-shaped structure made of metal with smooth edges to prevent snow from sticking. It is fixedly connected to the end of the first connecting rod 2a of the connecting rod assembly 2 by plugging or other fastening methods. A rubber pad can also be set at the connection to reduce vibration transmission.

[0041] Linkage assembly 2: Reference Figures 1 to 3 As shown, the linkage assembly 2 is the core of force transmission for the snow shovel, including a first connecting rod 2a, a second connecting rod 2b, and a joint. Both the first connecting rod 2a and the second connecting rod 2b are circular tubes, and their outer diameters are adapted to the inner diameters of the first sleeve 13 and the second sleeve 14, respectively. One end of the first connecting rod 2a is connected to the shovel head 1, and the other end is inserted into the first sleeve 13; one end of the second connecting rod 2b is connected to the handle 3, and the other end is inserted into the second sleeve 14; the first connecting rod 2a and the second connecting rod 2b are rotatably connected through the joint, and their angles can be adjusted within the range of 0° to 180°, including a 90° vertical deployment working posture.

[0042] Handle 3: Reference Figures 1 to 3 As shown, the handle 3 is fixedly connected to the second connecting rod 2b. The handle 3 and the second connecting rod 2b can be separate or integrally formed. The folding shovel is easy to operate when unfolded at 180° or 90°.

[0043] First rotating disk 4: Reference Figures 1 to 3 , Figure 8 As shown, the first rotating disk 4 is a circular disk that fits against the mating surface of the second rotating disk 5. Multiple guide holes 4a are evenly distributed circumferentially on it, extending parallel to the rotation axis and engaging with the locking pin 6a to guide its sliding. A circular mounting cavity 4b is provided in the center to accommodate the base 6b of the locking member 6. Multiple radially extending clearance grooves 4c are provided between the guide holes 4a and the mounting cavity 4b to allow the connecting ribs 6c to move. A shaft hole 4d is provided through the center for the bolt 9 to pass through. A second groove 4e is provided on the side opposite to the mating surface, coaxial with the shaft hole 4d, and can accommodate one of the nuts of the bolt 9. An annular extension edge 4f protrudes from the edge of the mating surface, extending towards the second rotating disk 5, and abuts against the stepped groove 5d. A limiting block 10 is integrally formed at the set position of the mating surface to engage with the limiting wall to limit the rotation angle.

[0044] Second rotating disk 5: Reference Figures 1 to 3 , Figure 9 As shown, the second rotating disk 5 is a circular disk with the same diameter as the first rotating disk 4, and its mating surface is in close contact with the mating surface of the first rotating disk 5. Four locking holes 5a are evenly distributed circumferentially on the mating surface, set at 90° intervals, and adapted to the locking pin 6a to achieve multi-angle locking, including the locking position corresponding to the 90° unfolded working posture; a first groove 5b is provided on the side opposite to the mating surface, coaxial with the shaft hole 5c, for accommodating the button 8a; a shaft hole 5c is provided through the center for the bolt 9 to pass through to ensure rotational freedom; an annular stepped groove 5d is opened at the edge of the mating surface, adapted to the extended edge 4f of the first rotating disk 4 to form a protective structure; an integrally formed first limiting wall 11 and second limiting wall 12 are provided on the mating surface, distributed 180° apart circumferentially, and the limiting block 10 can abut against the two to limit the rotation range.

[0045] Locking component 6: Reference Figures 1 to 3 , Figure 10 As shown, the locking component 6 is an integrally formed structure installed in the mounting cavity 4b and can only move along the rotation axis. It includes four locking pins 6a, evenly spaced circumferentially (one every 90°), one end of which is connected to the base 6b via a connecting rib 6c, and the other end can move along the extension direction of the guide hole 4a and be inserted into the locking hole 5a. Since the locking pins and locking holes are distributed at 90° intervals, rotating 90° allows the locking pins to be precisely inserted into the corresponding locking holes, achieving the positioning of the 90° unfolded working posture; the base 6b is a circular plate that fits the mounting cavity 4b; there are four connecting ribs 6c, extending radially, connecting the base 6b and the locking pins 6a, located in the clearance groove 4c; the base 6b has a through hole 6d in the center for the bolt 9 to pass through.

[0046] Return spring 7: Reference Figures 1 to 3 As shown, the return spring 7 is a compression spring, sleeved on the outside of the bolt 9, with its two ends abutting against the base 6b and the bottom wall of the mounting cavity 4b respectively. In its natural state, it pushes the locking member 6 to move the locking pin 6a along the extension direction of the guide hole 4a and insert it into the locking hole 5a, including the locking state when the working posture is 90°.

[0047] Operations Section 8: Reference Figures 1 to 3 As shown, the operating part 8 in this embodiment includes a button 8a, which can be made of plastic. Its operating end is exposed in the first groove 5b for easy pressing. Four pins 8b extend from the bottom and can pass through the insertion holes 5c on the bottom wall of the first groove 5b. The side of the pins 8b is provided with a buckle 8b1 to prevent the button 8a from coming off the insertion hole 5c. Of course, the operating part 8 can also be integrally formed with the locking part 6 to reduce processing costs.

[0048] Bolt 9: Reference Figures 1 to 3 As shown, bolt 9 can be made of stainless steel and is inserted through shaft hole 4d and through hole 6d in sequence. Both ends are limited by nuts, which are located in the first groove 5b and the second groove 4e respectively, so that the first rotating disk 4 and the second rotating disk 5 are axially fitted and can rotate relative to each other, ensuring smooth adjustment of the 90° unfolding working posture.

[0049] First sleeve 13: Reference Figures 1 to 3 As shown, the first sleeve 13 is integrally formed with the first rotating disk 4, and its central axis is offset from the rotation axis of the first rotating disk 4, which is used to sleeve and fix the first connecting rod 2a.

[0050] Second sleeve 14: Reference Figures 1 to 3 As shown, the second sleeve 14 is integrally formed with the second rotating disk 5, and its central axis is offset from the rotation axis of the second rotating disk 5, which is used to sleeve and fix the second connecting rod 2b.

[0051] Storage space 15: Reference Figure 5 , Figure 7 As shown, the storage space 15 is the gap formed between the first connecting rod 2a and the second connecting rod 2b when they are folded (0° state) due to the first sleeve 13 and the second sleeve 14 being off-axis of rotation, and can accommodate small auxiliary tools.

[0052] Decorative cover 16: Reference Figures 1 to 3 As shown, the decorative cover 16 is a plastic cover that is attached to the opening of the second groove 4e by a snap fastener. It is used to cover the nut and improve the appearance.

[0053] The working principle of the foldable snow shovel in this embodiment is as follows:

[0054] 1. Locked state: See reference Figure 3As shown, the return spring 7 extends naturally, pushing the locking member 6 to move towards the second rotating disk 5. The four locking pins 6a move along the extension direction of the guide hole 4a and insert into the corresponding four locking holes 5a. The first rotating disk 4 and the second rotating disk 5 are fixed relative to each other. The connecting rod assembly 2 maintains the current angle (such as 180° unfolding operation, 90° unfolding operation posture and 0° folding storage state). The extension edge 4f cooperates with the step groove 5d to prevent dust and moisture from entering the mating surface and protect the locking structure.

[0055] 2. Angle adjustment: Reference Figure 4 As shown, when the operating end of button 8a is pressed, pin 8b pushes the locking member 6 to compress the reset spring 7, and the four locking pins 6a move in the opposite direction along the extension direction of guide hole 4a and disengage from locking hole 5a (unlock). At this time, the first connecting rod 2a or the second connecting rod 2b can be rotated to drive the first rotating disk 4 and the second rotating disk 5 to rotate relative to each other. The guide hole 4a constrains the movement direction of the locking pins 6a, and the connecting rib 6c slides along the clearance groove 4c to ensure that the locking member 6 moves smoothly. The limiting block 10 rotates with the first rotating disk 4 and restricts the rotation when it abuts against the first limiting wall 11 or the second limiting wall 12 (maximum angle 180°). Since the locking pins and locking holes are distributed at 90° intervals, after rotating 90°, the locking pins can be precisely aligned with the corresponding locking holes.

[0056] 3. Relock: Adjust to the target angle (e.g., Figure 6 After the 90° unfolded working posture shown, release button 8a, the reset spring 7 pushes the locking part 6 to reset, the four locking pins 6a move along the extension direction of the guide hole 4a and insert into the four locking holes 5a at the corresponding positions to achieve a new angle fixation. At this time, the structure is stable and does not shake.

[0057] 4. Folding for storage: Adjust to Figure 5 In the 0° state shown, the first connecting rod 2a is parallel to the second connecting rod 2b. Figure 7 The storage space 15 shown can hold auxiliary tools to reduce storage volume; the decorative cover 16 covers the second recess 4e to keep the appearance neat, where T indicates auxiliary tools, such as brushes.

[0058] Through the above structure and working principle, this snow shovel achieves stable multi-angle positioning within the range of 0° to 180° (including...). Figure 6 The 90° extended working posture shown in the figure, especially the four locking posts and the four locking holes set at 90° intervals, make precise positioning possible with a 90° rotation, which is convenient to operate and the force is evenly distributed; the cooperation between the extended edge and the stepped groove provides full-angle protection to prevent the rotating components from being corroded; the cooperation between the locking posts and the locking holes at each angle ensures reliable fixation, making it suitable for diverse scenarios such as outdoor operations and camping.

[0059] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A foldable snow shovel, comprising a shovel head (1), a linkage assembly (2) connected to the shovel head (1), and a handle (3) connected to the linkage assembly (2), wherein the linkage assembly (2) comprises a first connecting rod (2a) and a second connecting rod (2b) rotatably connected via a joint, characterized in that: The joint includes a first rotating disk (4) and a second rotating disk (5) that are connected to each other and whose rotation axes coincide. The first rotating disk (4) is connected to the end of the first connecting rod (2a), and the second rotating disk (5) is connected to the end of the second connecting rod (2b). The first rotating disk (4) is provided with a locking member (6), which is constrained to be able to move only along the rotation axis; The locking member (6) has a plurality of locking pins (6a) that are spaced apart in the circumferential direction on the side facing the second rotating disk (5); The second rotating disk (5) is provided with a plurality of locking holes (5a) for the locking pin (6a) to be inserted; A return spring (7) is provided between the locking member (6) and the first rotating disk (4), and its elastic force drives the locking pin (6a) to insert into the locking hole (5a); The joint is provided with an operating part (8), which is configured to respond to an external operating force and drive the locking member (6) to compress the return spring (7) so that the locking pin (6a) disengages from the locking hole (5a).

2. The foldable snow shovel according to claim 1, characterized in that: The first rotating disk (4) has multiple guide holes (4a) on its mating surface with the second rotating disk (5). Each guide hole (4a) is respectively provided with a corresponding locking pin (6a), and the extension direction of each guide hole (4a) is parallel to the rotation axis of the first rotating disk (4) to guide the movement of the locking pin (6a).

3. The foldable snow shovel according to claim 1, characterized in that: The locking member (6) includes a base (6b) located in the middle, and four locking posts (6a) are provided. The four locking posts (6a) are evenly spaced around the base (6b) in the circumference, and each locking post (6a) is fixed to the base (6b) by a radially extending connecting rib (6c). The first rotating disk (4) and the second rotating disk (5) are provided with a mounting cavity (4b) that can accommodate the base (6b). Each guide hole (4a) is correspondingly arranged around the outer periphery of the mounting cavity (4b). Each guide hole (4a) and the mounting cavity (4b) are provided with a clearance groove (4c) for the connecting rib (6c) to move. The two ends of the return spring (7) abut against the bottom wall of the base (6b) and the mounting cavity (4b), respectively.

4. The foldable snow shovel according to claim 1, characterized in that: The operating part (8) includes a button (8a), which is mounted on the second rotating disk (5). Its operating end is exposed on the outer surface of the second rotating disk (5) and is constrained to be able to move only along the rotation axis of the second rotating disk (5) and to maintain abutting engagement with the locking member (6). When the button (8a) is pressed, it can directly push the locking member (6) to move and compress the return spring (7).

5. The foldable snow shovel according to claim 4, characterized in that: The second rotating disk (5) is provided with a first groove (5b) for accommodating a button (8a). The bottom of the button (8a) extends a pin (8b). The bottom of the first groove (5b) is provided with a socket (5c) for the pin (8b) to be inserted. The side of the pin (8b) is provided with a buckle (8b1) to prevent the pin (8b) from coming out of the socket (5c) upward. The bottom of the pin (8b) can abut against the base (6b) of the locking member (6), and when the button (8a) is pressed, it can drive the locking member (6) to move along the rotation axis.

6. The foldable snow shovel according to claim 5, characterized in that: The first rotating disk (4) and the second rotating disk (5) are coaxially rotatably connected by bolts (9), and each of them is provided with a shaft hole (4d) for the bolts (9) to pass through; The first rotating disk (4) is provided with a second groove (4e), and the second groove (4e) and the first groove (5b) can respectively accommodate the two nuts of the bolt (9). The first groove (5b) and the second groove (4e) are coaxially arranged with the shaft hole (4d), and the diameter of the shaft hole (4d) is larger than the diameter of the bolt (9) to allow the first rotating disk (4) and the second rotating disk (5) to rotate relative to each other. The locking member (6) is also provided with a through hole (6d) for the bolt (9) to pass through; The bolt (9) is respectively limited in the first groove (5b) and the second groove (4e) by two nuts, so that the first rotating disk (4) and the second rotating disk (5) are axially fitted and can rotate relative to each other.

7. The foldable snow shovel according to claim 1, characterized in that: The first rotating disk (4) has a limiting block (10) on its mating surface, and the second rotating disk (5) has a first limiting wall (11) and a second limiting wall (12) adapted to the limiting block (10) on its mating surface. The first limiting wall (11) and the second limiting wall (12) are arranged circumferentially at intervals, and the interval angle between them is 180°. Through the abutting cooperation between the limiting block (10) and the first limiting wall (11) and the second limiting wall (12), the relative rotation angle range between the first rotating disk (4) and the second rotating disk (5) can be constrained to 180°.

8. The foldable snow shovel according to claim 1, characterized in that: The first rotating disk (4) or the second rotating disk (5) has a protruding edge of an extension edge (4f) extending toward the other side on the mating surface edge. The corresponding rotating disk has a stepped groove (5d) that matches the extension edge (4f). The mating surface is protected by the cooperation between the extension edge (4f) and the stepped groove (5d).

9. The foldable snow shovel according to any one of claims 1 to 8, characterized in that: The first rotating disk (4) is provided with a first sleeve (13), and the second rotating disk (5) is provided with a second sleeve (14); the first sleeve (13) is used to connect the first connecting rod (2a), and the second sleeve (14) is used to connect the second connecting rod (2b), and both the first sleeve (13) and the second sleeve (14) are parallel to the mating surface and perpendicular to the rotation axis.

10. The foldable snow shovel according to claim 9, characterized in that: The central axis of the first sleeve (13) is offset from the rotation axis of the first rotating disk (4), and the central axis of the second sleeve (14) is offset from the rotation axis of the second rotating disk (5). With the first connecting rod (2a) and the second connecting rod (2b) in a folded state, the aforementioned offset arrangement creates a storage space (15) between the first connecting rod (2a) and the second connecting rod (2b) that can accommodate auxiliary components.

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