Folding hand shovel
Through the linkage mechanism design, the telescopic rod of the shovel handle automatically locks or unlocks during the unfolding or retraction process, solving the problem that existing double-folding hand shovels require two unlocking operations and simplifying the use of the hand shovel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU INST OF CULTURAL RELICS & ARCHEOLOGY
- Filing Date
- 2025-05-26
- Publication Date
- 2026-07-07
AI Technical Summary
Existing double-folding hand shovels require at least two unlocking actions during use, which is inconvenient.
The linkage mechanism enables the shovel handle and the locking head to work together. The telescopic rod of the shovel handle automatically locks or unlocks during the unfolding or retraction process, simplifying the unfolding and folding steps of the hand shovel.
Thanks to the linkage mechanism, the shovel handle can be unfolded and folded automatically without human intervention, simplifying the operation.
Smart Images
Figure CN224468458U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of shovels, and more particularly to a folding hand shovel. Background Technology
[0002] The hand shovel, a commonly used tool in archaeological excavation, mainly consists of a handle and a shovel head attached to the end of the handle.
[0003] In related technologies, to facilitate carrying, hand shovels are usually designed with a foldable structure. Traditional foldable hand shovels mainly feature a handle that can be flipped and folded relative to the shovel head. However, for some hand shovels with long handles, the folded handle still takes up a lot of space. Therefore, some double-folding hand shovels have emerged in related technologies. In addition to the handle being able to flip and fold relative to the shovel head, the handle itself is also designed to be foldable, thereby further reducing the overall space occupied by the folded hand shovel.
[0004] However, this type of double-folding shovel still has some inconveniences in actual use. When folding, at least two unlocking actions are required: one is to release the lock between the shovel head and the handle so that the handle can be flipped and folded relative to the shovel head; the other is to release the lock of the handle itself so that the handle can be folded. Utility Model Content
[0005] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this application is to provide a folding hand shovel.
[0006] To achieve the above objectives, this application provides the following technical solution.
[0007] This application provides a folding hand shovel, comprising:
[0008] A shovel head, the shovel head including a connecting part, the connecting part being provided with a locking groove;
[0009] A shovel handle, hinged to a connecting part to allow the shovel handle to flip and fold relative to the shovel head; the shovel handle includes a telescopic rod capable of axially extending and retracting and a locking structure for locking the telescopic rod when it is extended.
[0010] A locking head is provided on the shovel handle and can be engaged in a locking groove to restrict the shovel handle from rotating relative to the shovel head;
[0011] A linkage mechanism is used to realize the linkage between the shovel handle and the locking head. The linkage mechanism is configured such that when the shovel handle is flipped to the unfolded state relative to the shovel head, when the drive telescopic rod enters the extended unfolded state, the linkage mechanism pushes the locking head into the locking groove to restrict the shovel handle from flipping relative to the shovel head; when the drive telescopic rod enters the retracted folded state, the linkage mechanism pushes the locking head out of the locking groove so that the shovel handle can flip and fold relative to the shovel head.
[0012] As an optional embodiment of this application, the telescopic rod includes a sleeve and an inner rod that are interlocked and axially movable relative to each other; one end of the sleeve is hinged to the connecting part; the lock head is axially movable relative to the sleeve.
[0013] As an optional embodiment of this application, the linkage mechanism includes a connecting rod disposed inside the sleeve and extending axially; the connecting rod is provided with a first limiting part and a second limiting part in sequence along the axial direction; the inner rod includes a sliding part; the portion of the connecting rod located between the first limiting part and the second limiting part slides through the sliding part along the axial direction; the lock head is disposed on the second limiting part;
[0014] When the shovel handle is flipped relative to the shovel head to the unfolded position:
[0015] When the inner rod extends relative to the sleeve and enters the extended and unfolded state, the sliding part abuts against the first limiting part and pushes the first limiting part to move away from the second limiting part so as to drive the lock head into the locking groove.
[0016] When the inner rod retracts relative to the sleeve and enters a retracted folded state, the sliding part abuts against the second limiting part and pushes the second limiting part to move away from the first limiting part, thereby causing the lock head to disengage from the locking groove.
[0017] As an optional embodiment of this application, the inner rod is provided with a channel extending axially to accommodate the first limiting part and the connecting rod.
[0018] As an optional embodiment of this application, a guide groove is provided on the peripheral wall of the sleeve, which extends axially and penetrates the peripheral wall of the sleeve radially; the locking head can move axially within the guide groove, and the locking head is at least partially led out from the guide groove to be engaged in the locking groove.
[0019] As an optional embodiment of this application, the outer peripheral wall of the inner rod is clearance-fitted with the inner peripheral wall of the sleeve; and the outer peripheral wall of the inner rod protrudes radially outward to slide with the inner peripheral wall of the sleeve; and / or the end of the sleeve away from the shovel head is provided with a sliding sleeve, and the outer peripheral wall of the inner rod slides with the inner peripheral wall of the sliding sleeve.
[0020] As an optional embodiment of this application, the sliding sleeve is detachably mounted on the sleeve.
[0021] As an optional embodiment of this application, the end of the sleeve away from the inner rod is open.
[0022] As an optional embodiment of this application, the connecting part includes at least a side plate located on the side of the telescopic rod, the telescopic rod being hinged to the side plate; a transversely extending track groove is provided on the side plate, the end of the track groove away from the shovel head forming a locking groove; the end of the track groove away from the locking groove is open to avoid the lock head flipping out of the track groove.
[0023] As an optional embodiment of this application, the locking structure includes a bolt threaded onto the sleeve. When locked, the inner end of the bolt extends into the sleeve and abuts against the inner rod to achieve locking; and / or the inner peripheral wall of the sleeve away from the shovel head is provided with a first thread, and the outer peripheral wall of the inner rod near the shovel head is provided with a second thread adapted to the first thread; the locking of the inner rod is achieved through the threaded engagement of the first thread and the second thread.
[0024] Compared with the prior art, this application has the following advantages:
[0025] In this application, the entire hand shovel is equivalent to having two folding parts. The first part is that the shovel handle can be folded relative to the shovel head, and the second part is that the shovel handle itself is a retractable folding structure (i.e., the telescopic rod is the main body of the shovel handle). The first part is locked by the cooperation of the lock head and the lock groove so that the shovel handle is kept in the unfolded state relative to the plug, and the second part is locked by the locking structure so that the telescopic rod is kept in the unfolded state.
[0026] This application creatively integrates the locking head with the telescopic rod of the shovel handle via a linkage mechanism. When the entire shovel needs to be folded, the locking structure of the telescopic rod is first unlocked, and then the telescopic rod of the shovel handle is retracted. During the retraction and folding process, the telescopic rod pushes the locking head out of the locking groove via the linkage mechanism, thereby releasing the locking head from the shovel handle and shovel head, allowing the shovel handle to be flipped and folded relative to the shovel head. Conversely, when the entire shovel needs to be unfolded, the folded telescopic rod (shovel handle) is first flipped relative to the shovel head to the unfolded state, and then the unfolded telescopic rod is pulled outwards. Finally, the telescopic rod is locked by the locking structure. During the extension and unfolding process, the telescopic rod pushes the locking head to automatically engage in the locking groove via the linkage mechanism, thereby locking the shovel handle and keeping the shovel handle in the unfolded state relative to the shovel head.
[0027] As can be seen, in this application, the folding of the hand shovel requires the special unlocking of the telescopic rod's locking structure. The unlocking action between the shovel head and the handle (i.e., the unlocking action of the lock head) does not require special human operation and can be automatically unlocked by the telescopic rod's own retraction and folding action. Conversely, the unfolding of the hand shovel ultimately requires locking the telescopic rod's locking structure. The locking action of the lock head is automatically performed by the telescopic rod's own unfolding action, thus simplifying the unfolding and folding steps of the hand shovel.
[0028] In short, the unlocking action of the first part before folding of the hand shovel of this application is automatically performed during the folding process of the second part, and the locking action of the first part after unfolding is also automatically performed during the unfolding process of the second part, thus simplifying the locking and unlocking steps.
[0029] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description
[0030] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:
[0031] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
[0032] Figure 1 This is a schematic diagram of the structure in the folded state of this application;
[0033] Figure 2 This is a schematic diagram of the structure in the unfolded state of this application;
[0034] Figure 3 This is a schematic diagram of the structure of this application when the shovel handle itself is in a folded state and is not folded relative to the shovel head;
[0035] Figure 4 This is an exploded view of the shovel handle of this application;
[0036] Figure 5 This is a schematic diagram of the shovel handle in the deployed state of this application;
[0037] Figure 6 This is a schematic diagram of the shovel handle in the folded state of this application.
[0038] Explanation of the labels in the diagram:
[0039] 1. Shovel head; 11. Connecting part; 111. Side plate; 12. Track groove; 121. Locking groove; 122. Clearance opening;
[0040] 2. Shovel handle; 21. Sleeve; 211. Guide groove; 22. Inner rod; 221. Sliding part; 23. Sliding sleeve;
[0041] 3. Lock;
[0042] 4. Linkage mechanism; 41. Connecting rod; 410. Channel; 411. First limiting part; 412. Second limiting part. Detailed Implementation
[0043] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0044] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.
[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.
[0046] like Figure 1-6 As shown, this application provides a folding hand shovel, including a shovel head 1, a shovel handle 2, a locking head 3, and a linkage mechanism 4. The following is a detailed description of each part.
[0047] like Figure 1 As shown, the shovel head 1 is the direct force-bearing component for shoveling the ground. Its shape can be rectangular, triangular, etc., and can be selected according to actual needs.
[0048] The shovel head 1 includes a connecting part 11, which is fixed to the end of the shovel head 1 and can be integral with or welded to the shovel head 1. The connecting part 11 is provided with a locking groove 121.
[0049] The handle 2 is hinged to the connecting part 11 so that the handle 2 can be flipped and folded relative to the shovel head 1. For example, the connecting part 11 is generally U-shaped and includes two opposing side plates 111. The end of the handle 2 is hinged between the two side plates 111 by a hinge shaft, wherein the axis of the hinge shaft is perpendicular to the length direction of the shovel head 1.
[0050] In this embodiment, the shovel handle 2 itself is also a foldable structure. Specifically, the shovel handle 2 includes a telescopic rod and a locking structure. It is worth noting that, unless otherwise specified, the axial direction claimed in this embodiment can be understood as the axial direction of the telescopic rod or the length direction of the shovel handle 2.
[0051] The telescopic rod can extend, retract, and fold axially, for example, as... Figure 2 As shown, the telescopic rod includes a sleeve 21 and an inner rod 22 that are interlocked and axially movable relative to each other. For example, the inner rod 22 is sleeved inside the sleeve 21; one end of the sleeve 21 is hinged to the connecting part 11.
[0052] The locking structure is mainly used to lock the telescopic rod when it is extended. In some embodiments, the locking structure can be a bolt (not shown in the figure). The bolt is arranged radially along the sleeve 21 and threaded onto the sleeve 21. The inner end of the bolt can extend into the sleeve 21. When locked, the inner end of the bolt extends into the sleeve 21 and presses against the inner rod 22, thereby achieving relative locking between the inner rod 22 and the sleeve 21.
[0053] Of course, in some other alternative implementations, the inner circumferential wall of the sleeve 21 away from the shovel head 1 is provided with a first thread, and the outer circumferential wall of the inner rod 22 near the shovel head 1 is provided with a second thread that matches the first thread. The first thread and the second thread can be threadedly engaged with each other. When it is necessary to unfold the locking telescopic rod, the inner rod 22 is first pulled outward. As the inner rod 22 is pulled outward, when the second thread of the inner rod 22 reaches the position of the first thread inside the sleeve 21, the inner rod 22 begins to rotate circumferentially. As the inner rod 22 rotates, the first thread and the second thread engage with each other to achieve relative locking between the inner rod 22 and the sleeve 21.
[0054] Either of the two locking structures mentioned above can be used, or both can be used. Of course, other locking structures that can lock the telescopic rod can also be used, but they will not be listed here.
[0055] The locking head 3 is located on the shovel handle 2 and can be engaged in the locking groove 121 to restrict the shovel handle 2 from rotating relative to the shovel head 1.
[0056] The linkage mechanism 4 is mainly used to realize the linkage between the shovel handle 2 and the locking head 3. The linkage mechanism is constructed such that, under the premise that the shovel handle 2 is flipped to the unfolded state relative to the shovel head 1:
[0057] When the telescopic rod is in the extended position, such as Figure 2 As shown, the linkage mechanism 4 pushes the lock head 3 into the locking groove 121 to restrict the shovel handle 2 from rotating relative to the shovel head 1;
[0058] When the telescopic rod enters the retracted / folded state, such as Figure 3 As shown, the linkage mechanism 4 pushes the lock head 3 out of the locking groove 121 so that the shovel handle 2 can be flipped and folded relative to the shovel head 1.
[0059] Thus, the entire hand shovel is equivalent to having two folding parts. The first part is that the shovel handle 2 can be folded relative to the shovel head 1, and the second part is that the shovel handle 2 itself is a retractable folding structure (that is, the telescopic rod is the main body of the shovel handle 2). The first part is locked by the cooperation of the lock head 3 and the lock groove, so that the shovel handle 2 is kept in the unfolded state relative to the plug, and the second part is locked by the locking structure, so that the telescopic rod is kept in the unfolded state.
[0060] The locking head 3 works in conjunction with the telescopic rod of the shovel handle 2 via a linkage mechanism. When the entire shovel needs to be folded, the locking structure of the telescopic rod is first unlocked, and then the telescopic rod of the shovel handle 2 is retracted. During the retraction and folding process, the telescopic rod will push the locking head 3 out of the locking groove 121 through the linkage mechanism 4, thereby releasing the locking head 3 from the locking between the shovel handle 2 and the shovel head 1, so that the shovel handle 2 can be flipped and folded relative to the shovel head 1. Conversely, when the entire shovel needs to be unfolded, the folded telescopic rod (shovel handle 2) is first flipped relative to the shovel head 1 to the unfolded state, and then the unfolded telescopic rod is pulled outward and finally locked by the locking structure. During the extension and unfolding process, the telescopic rod will push the locking head 3 to automatically engage in the locking groove 121 through the linkage mechanism 4 to lock the shovel handle 2, so that the shovel handle 2 remains in the unfolded state relative to the shovel head 1.
[0061] As can be seen, the folding of the hand shovel requires unlocking the locking structure of the telescopic rod. The unlocking action between the shovel head 1 and the handle 2 (i.e., the unlocking action of the lock head 3) does not require manual operation and can be automatically unlocked by the telescopic rod's own retraction and folding action. Conversely, the unfolding of the hand shovel ultimately requires locking the locking structure of the telescopic rod. The locking action of the lock head 3 is automatically performed by the unfolding action of the telescopic rod, thus simplifying the unfolding and folding steps of the hand shovel.
[0062] In short, the unlocking action of the first part before folding is performed automatically during the folding process of the second part, and the locking action of the first part after unfolding is also performed automatically during the unfolding process of the second part, thus simplifying the locking and unlocking steps.
[0063] In some embodiments, such as Figure 1 As shown, the lock head 3 extends radially along the telescopic rod, and the lock head 3 is axially movable relative to the sleeve 21. For example, the sleeve 21 has a guide groove 211 that extends axially and radially penetrates the peripheral wall of the sleeve 21. The lock head 3 is axially movable within the guide groove 211, and the lock head 3 is at least partially led out from the guide groove 211 to engage with the locking groove 121.
[0064] To facilitate the operation of the lock head 3, the locking groove 121 is specifically constructed as follows: Figure 1As shown, the side plate 111 is provided with a horizontally extending track groove 12. It can be understood that the track groove 12 can be provided on each side plate 111, or the track groove 12 can be provided on only one side plate 111. The specific number of lock heads 3 is determined. For example, in this embodiment, two lock heads 3 are provided, symmetrically arranged on both sides of the sleeve 21. Then, each side plate 111 is provided with a track groove 12 to correspond to the two lock heads 3 respectively.
[0065] The end of the track groove 12 away from the shovel head 1 forms a locking groove 121; the opening at the end of the track groove 12 away from the locking groove 121 is provided as a clearance opening 122 to allow the locking head 3 to rotate out of the track groove 12. The track groove 12 is approximately L-shaped. When the locking head 3 enters the locking groove 121 along the track groove 12, the upper and lower side walls of the locking groove 121 restrict the locking head 3 from rotating around the hinge axis, thus locking the shovel handle 2 and preventing the shovel handle 2 from rotating relative to the shovel head 1, thereby keeping the shovel handle 2 in an extended state relative to the shovel head 1.
[0066] In some embodiments, the linkage mechanism is specifically constructed as follows: Figure 4 As shown, the linkage mechanism includes a connecting rod 41 disposed inside the sleeve 21 and extending axially. The connecting rod 41 has a round rod structure. The connecting rod 41 is provided with a first limiting part 411 and a second limiting part 412 in sequence along the axial direction. For example, the first limiting part 411 and the second limiting part 412 are respectively disposed at both ends of the connecting rod 41, and the first limiting part 411 and the second limiting part 412 both protrude from the connecting rod 41 radially.
[0067] Combination Figure 4 and Figure 5 As shown, the inner rod 22 includes a sliding portion 221. For example, the inner end of the inner rod 22 (i.e., the end of the inner rod 22 inside the sleeve 21) serves as the sliding portion 221. The portion of the connecting rod 41 located between the first limiting portion 411 and the second limiting portion 412 slides axially through the sliding portion 221. Under the limitation of the first limiting portion 411 and the second limiting portion 412, the sliding portion 221 can only slide within the range of the connecting rod 41 segment located between the first limiting portion 411 and the second limiting portion 412. The locking head 3 is fixed to the second limiting portion 412.
[0068] The following explanation will be based on the state in which the shovel handle 2 is flipped relative to the shovel head 1 to the unfolded state:
[0069] When the inner rod 22 is pulled outward to extend the telescopic rod, the sliding part 221 will slide outward along the connecting rod 41 simultaneously. As the sliding part 221 slides outward, it will eventually come into contact with the first limiting part 411. Figure 5As shown, as the sliding part 221 continues to slide outward, it pulls the first limiting part 411 and the connecting rod 41 outward together, causing the second limiting part 412 and the locking head 3 on the connecting rod 41 to move outward. Finally, the locking head 3 enters the locking groove 121. At this time, the telescopic rod is locked by the locking structure, so that the locking head 3 is kept in the locking groove 121. The telescopic rod itself is locked by the locking structure, and the shovel handle 2 is locked relative to the shovel head 1 by the locking head 3 and cannot be rotated. In this way, the entire hand shovel is locked in the unfolded state.
[0070] When the locking structure is unlocked and the inner rod 22 is driven to retract inward, as the inner rod 22 retracts inward, the sliding part 221 will slide inward along the connecting rod 41, and eventually the sliding part 221 will abut against the second limiting part 412, as... Figure 6 As shown, the sliding part 221 then continues to slide inward, which pushes the second limiting part 412 to move inward, thereby causing the locking head 3 on the second limiting part 412 to disengage from the locking groove 121. At this time, the shovel handle 2 can be flipped and folded relative to the shovel head 1.
[0071] It is worth noting that the aforementioned inward and outward directions, in order to Figure 5 and Figure 6 Taking the perspective shown as an example, "inward" can be understood as "downward," and "outward" can be understood as "upward."
[0072] In order to allow the inner rod 22 to avoid or accommodate the connecting rod 41 when it retracts inward, the inner rod 22 is provided with a channel 410 extending axially to accommodate the first limiting part 411 and the connecting rod 41.
[0073] The outer peripheral wall of the inner rod 22 is clearance-fitted with the inner peripheral wall of the sleeve 21, and a portion of the outer peripheral wall of the inner rod 22 protrudes radially outward to slide against the inner peripheral wall of the sleeve 21. For example, the sliding portion 221 serves as the radially protruding part of the inner rod 22. That is, except for the protruding part, the outer peripheral wall of the inner rod 22 has a gap with the inner peripheral wall of the sleeve 21, while the protruding part is in contact with the inner peripheral wall of the sleeve 21 and can slide relative to it. This reduces the contact area between the inner rod 22 and the sleeve 21, thereby reducing sliding friction.
[0074] In addition, the end of the sleeve 21 away from the shovel head 1 is provided with a sliding sleeve 23, and the outer peripheral wall of the inner rod 22 slides in conjunction with the inner peripheral wall of the sliding sleeve 23. At this time, the protruding part of the sliding sleeve 23 and the inner rod 22 are equivalent to forming two-point support, so that the inner rod 22 slides axially between the two points.
[0075] In order to enable the replacement of the sliding sleeve 23, in some embodiments the sliding sleeve 23 is detachably mounted on the sleeve 21, for example, the sliding sleeve 23 is mounted on the sleeve 21 by screws, or the inner peripheral wall of the sleeve 21 is threaded and screwed onto the end of the sleeve 21 in a threaded manner.
[0076] Because of the presence of the guide groove 211, some sand will enter the sleeve 21 through the guide groove 211 when the hand shovel is digging. Therefore, in order to clean out the sand that has entered the sleeve 21, in some embodiments, the end of the sleeve 21 away from the inner rod 22 is set open. In this way, the open end of the sleeve 21 can be used as an outlet for discharging the sand in the sleeve 21.
[0077] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A folding hand shovel, characterized in that, include: A shovel head, the shovel head including a connecting part, the connecting part being provided with a locking groove; A shovel handle, hinged to a connecting part to allow the shovel handle to flip and fold relative to the shovel head; the shovel handle includes a telescopic rod capable of axially extending and folding and a locking structure for locking the telescopic rod when it is extended. A locking head is provided on the shovel handle and can be engaged in a locking groove to restrict the shovel handle from rotating relative to the shovel head; A linkage mechanism is used to realize the linkage between the shovel handle and the locking head. The linkage mechanism is configured such that when the shovel handle is flipped to the unfolded state relative to the shovel head, when the drive telescopic rod enters the extended unfolded state, the linkage mechanism pushes the locking head into the locking groove to restrict the shovel handle from flipping relative to the shovel head; when the drive telescopic rod enters the retracted folded state, the linkage mechanism pushes the locking head out of the locking groove so that the shovel handle can flip and fold relative to the shovel head.
2. A folding hand shovel according to claim 1, characterized in that, The telescopic rod includes a sleeve and an inner rod that are interlocked and axially movable relative to each other; one end of the sleeve is hinged to the connecting part; the lock head is axially movable relative to the sleeve.
3. A folding hand shovel according to claim 2, characterized in that, The linkage mechanism includes a connecting rod disposed inside the sleeve and extending axially; the connecting rod is provided with a first limiting part and a second limiting part in sequence along the axial direction; the inner rod includes a sliding part; the portion of the connecting rod located between the first limiting part and the second limiting part slides through the sliding part along the axial direction; the lock head is disposed on the second limiting part. When the shovel handle is flipped relative to the shovel head to the unfolded position: When the inner rod extends relative to the sleeve and enters the extended and unfolded state, the sliding part abuts against the first limiting part and pushes the first limiting part to move away from the second limiting part so as to drive the lock head into the locking groove. When the inner rod retracts relative to the sleeve and enters a retracted folded state, the sliding part abuts against the second limiting part and pushes the second limiting part to move away from the first limiting part, thereby causing the lock head to disengage from the locking groove.
4. A folding hand shovel according to claim 3, characterized in that, The inner rod has an axially extending channel for accommodating the first limiting part and the connecting rod.
5. A folding hand shovel according to claim 3, characterized in that, The sleeve has a guide groove that extends axially and penetrates radially through the sleeve's peripheral wall; the lock head can move axially within the guide groove, and the lock head is at least partially extended from the guide groove to engage with the locking groove.
6. A folding hand shovel according to claim 2, characterized in that, The outer peripheral wall of the inner rod is fitted with a clearance fit to the inner peripheral wall of the sleeve; and the outer peripheral wall of the inner rod protrudes radially outward to slide with the inner peripheral wall of the sleeve; and / or the end of the sleeve away from the shovel head is provided with a sliding sleeve, and the outer peripheral wall of the inner rod slides with the inner peripheral wall of the sliding sleeve.
7. A folding hand shovel according to claim 6, characterized in that, The sliding sleeve is detachably mounted on the sleeve.
8. A folding hand shovel according to claim 2, characterized in that, The end of the sleeve furthest from the inner rod is open.
9. A folding hand shovel according to claim 1, characterized in that, The connecting part includes at least one side plate located on the side of the telescopic rod, the telescopic rod being hinged to the side plate; the side plate is provided with a laterally extending track groove, the end of the track groove away from the shovel head forming a locking groove; the end of the track groove away from the locking groove is open to avoid the lock head flipping out of the track groove.
10. A folding hand shovel according to claim 2, characterized in that, The locking structure includes a bolt threaded onto the sleeve. When locked, the inner end of the bolt extends into the sleeve and presses against the inner rod to achieve locking; and / or the inner circumferential wall of the sleeve away from the shovel head is provided with a first thread, and the outer circumferential wall of the inner rod near the shovel head is provided with a second thread that matches the first thread; the locking of the inner rod is achieved through the threaded engagement of the first thread and the second thread.