Shovel blade protection and shovel blade

Abstract

The application provides a shovel blade protection sleeve and a shovel blade. The shovel blade protection sleeve comprises a mounting shell, a sheath and a driving mechanism mounted on the mounting shell. The mounting shell has a mounting groove and is configured to be mounted on a shovel head of the shovel blade. At least part of the sheath is located in the mounting groove. The sheath has a containing groove with a first opening. A bottom wall opposite to the first opening of the containing groove is provided with a gap for the entry and exit of a blade. The driving mechanism is connected with the sheath and drives the sheath to switch between a protection position and a working position. When the sheath is located at the protection position, the sheath covers the blade. When the sheath is located at the working position, the sheath exposes the blade. The shovel blade protection sleeve does not need to be independently detached during the use of the shovel blade, and the technical problem that the shovel blade protection sleeve is easy to be lost is solved.

Description

Technical Field

[0001] This application relates to the field of shovel technology, and in particular to a shovel protective sleeve and a shovel. Background Technology

[0002] As a common hand tool, scrapers are widely used in construction and decoration, household cleaning and other fields to scrape off old paint, putty, glue stains, dirt and other adhering substances on walls.

[0003] like Figure 1 As shown, a scraper 100 typically includes a handle 110 and a scraper head 120 connected to the handle 110. A blade 130 is mounted at the front end of the scraper head 120. The blade 130 has a sharp edge to ensure good scraping performance. To ensure safety during transportation and storage, and to prevent personal injury or scratching of other objects by the sharp blade 130, the scraper 130 is usually equipped with a protective cover. In related technologies, the protective cover of the scraper is usually directly fitted over the front end of the scraper head to protect the blade. During use, the operator removes the protective cover directly from the front end of the scraper head, and after the work is completed, the protective cover is put back over the front end of the scraper head to protect the blade.

[0004] However, the protective cases in these technologies are prone to being lost. Utility Model Content

[0005] This application provides a shovel protective cover and a shovel to solve the technical problem that protective covers in related technologies are easily lost.

[0006] The embodiments of this application provide the following technical solutions to solve the above-mentioned technical problems: This application provides a shovel protective sleeve, including: Mounting housing, the mounting housing having a mounting groove, the mounting housing being configured to be mounted on the shovel head of a shovel blade; The sheath, at least a portion of which is located within the mounting groove, has a receiving groove with a first opening, and the bottom wall of the receiving groove opposite to the first opening has a slit for the blade to enter and exit. A drive mechanism is mounted on the mounting housing and connected to the protective sleeve. The drive mechanism drives the protective sleeve to switch between a protective position and a working position. When the protective sleeve is in the protective position, it covers the blade. When the protective sleeve is in the working position, it exposes the blade.

[0007] The beneficial effects of this application embodiment are as follows: The shovel protective cover provided in this application embodiment is installed on the shovel head of the shovel. The shovel protective cover includes a cover and a drive mechanism for driving the cover to extend and retract. When the shovel is in use, the drive mechanism drives the cover to move into the mounting groove to expose the blade. When the shovel is not in use, the drive mechanism drives the cover to move out of the mounting groove so that the cover covers the blade to prevent the exposed blade from scratching the user or objects. The shovel protective cover provided in this embodiment does not need to be removed separately when the shovel is in use, which solves the technical problem that the shovel protective cover is easy to lose.

[0008] In one possible implementation, the mounting housing includes a first housing and a second housing, which are detachably connected; At least one of the first housing and the second housing is provided with a limiting structure, the limiting structure being disposed on the inner wall of the mounting groove, the limiting structure being configured to restrict the movement of the mounting housing in the length direction of the shovel and / or the width direction of the shovel head.

[0009] In one possible implementation, the limiting structure includes a first limiting structure, which includes a first limiting surface, a second limiting surface, and a third limiting surface. The first limiting surface is at least partially in contact with the front sidewall of the decorative groove of the shovel head, and the second limiting surface and the third limiting surface are at least partially in contact with the two sidewalls of the decorative groove in the width direction of the shovel head, respectively.

[0010] In one possible implementation, the limiting structure includes a second limiting structure, which includes a first protruding edge and a second protruding edge. The first protruding edge is at least partially attached to a first side of the shovel head, and the second protruding edge is at least partially attached to a second side of the shovel head. The first side and the second side are respectively two arc-shaped outer sides of the portion of the shovel head near the handle in the width direction.

[0011] In one possible implementation, the second limiting structure is disposed on the first housing, and the second limiting structure is provided with multiple card interfaces; The inner sidewall of the second housing is provided with buckles corresponding to each of the card interfaces, and the second housing and the first housing are snapped together by the cooperation of the buckles and the card interfaces.

[0012] In one possible implementation, the sheath is a soft rubber sleeve.

[0013] In one possible implementation, the opening edge of the mounting groove is provided with a raised pressure strip.

[0014] In one possible implementation, the sidewall of the mounting groove is provided with a limiting protrusion; When the sheath is in the working position, the side of the sheath on the first opening side abuts against the limiting protrusion.

[0015] In one possible implementation, the sidewall of the mounting groove is provided with abutment protrusions; The sheath has a stop arm at the outer edge of the first opening; When the sheath is in the protective position, the blocking arm abuts against the side of the blocking protrusion closest to the sheath. When the sheath switches from the protective position to the working position, the blocking arm deforms and disengages from the blocking protrusion.

[0016] In one possible implementation, the drive mechanism includes a pusher mounted on the mounting housing, a portion of the pusher being located outside the mounting housing and a portion of the pusher extending into the mounting groove and connected to the sheath, the pusher being movable between a protective position and a working position; When the pusher is in the protective position, the sheath is in the protective position. When the pusher moves from the protective position to the working position, the pusher drives the sheath to move from the protective position to the working position.

[0017] In one possible implementation, the mounting housing is provided with a guide mounting hole that passes through the outer side of the mounting housing and the mounting groove; The pusher has two opposing snap-fit ​​arms, and the free end of each snap-fit ​​arm has a snap-fit ​​protrusion. The snap-fit ​​arm extends into the mounting groove from the guide mounting hole. The snap-fit ​​protrusion and the pusher respectively abut against the axial edges of the guide mounting hole, so that the pusher is mounted in the guide mounting hole and moves along the guide mounting hole.

[0018] This application also provides a shovel blade, which includes a shovel head and a shovel blade protective sleeve as described in any of the above embodiments, wherein the shovel blade protective sleeve is installed on the shovel head.

[0019] The beneficial effects of the shovel provided in this application embodiment are the same as those of the shovel protective sleeve described above, and will not be repeated here.

[0020] In addition to the technical problems solved by this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that the shovel protective sleeve and shovel provided by this application can solve, other technical features contained in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] Figure 1 This is a schematic diagram of a shovel blade in related technologies; Figure 2 This application provides a schematic diagram of the shovel protective sleeve in its working position according to an embodiment. Figure 3 This is a schematic diagram showing the shovel protective sleeve in the protective position according to an embodiment of this application; Figure 4 This is an exploded view of the shovel blade in an embodiment of this application; Figure 5 This is a schematic diagram of the first housing according to an embodiment of this application; Figure 6 This is a schematic diagram of the second housing according to an embodiment of this application; Figure 7 This is a schematic diagram of the sheath in an embodiment of this application; Figure 8 This is a schematic diagram of the driving mechanism in an embodiment of this application; Figure 9 This is a schematic diagram of the second housing in Embodiment 2.

[0023] Explanation of reference numerals in the attached figures: 100. Spare blade; 110. Handle; 120. Shovel head; 130. Blade; 121. Decorative groove; 122. Front sidewall; 123. First side; 124. Second side; 200. Mounting casing; 210. First housing; 220. Second housing; 230. Mounting groove; 240. Limiting structure; 250. Raised pressure strip; 260. Limiting protrusion; 270. Abutting protrusion; 280. Guide mounting hole; 221. Buckle; 241. First limiting structure; 242. First limiting surface; 243. Second limiting surface; 244. Third limiting surface; 245. Second limiting structure; 246. First protruding edge; 247. Second protruding edge; 248. Card interface; 300, sheath; 310. Receiving groove; 320. First opening; 330. Gap; 340. Braking arm; 400. Drive mechanism; 410. Pushing component; 420. Connecting component; 411. Snap-on arm; 412. Snap-on protrusion.

[0024] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] like Figure 1 As shown, the shovel 100 in this embodiment includes a handle 110 and a shovel head 120 connected to the handle 110. The shovel head 120 and the handle 110 can be an integrally formed structure or a detachably connected structure. A blade 130 is installed at the front end of the shovel head 120. The shovel head 120 is oriented in the thickness direction (e.g., ...). Figure 1 Decorative grooves 121 are provided on both sides of the shovel head 120 in the Z direction. The decorative grooves 121 have a front side and a side in the width direction of the shovel head 120 (e.g., in the Z direction). Figure 1 On both sides of the Y direction, the front end of the shovel head 120 where the blade is mounted is wider and narrows at the rear end near the handle 110. The two sides of the shovel head 120 near the handle 110 are arc-shaped in the width direction. The front end of the shovel head 120 narrows at the rear end through the arc-shaped edge. The two outer arc-shaped edges of the shovel head 120 near the handle 110 are the first side 123 and the second side 124, respectively.

[0027] It should be noted that the structural form of the scraper 100 is not limited to... Figure 1 The structure can be any other form, and no specific limitation is made here. Example 1

[0028] like Figure 2 and Figure 3 As shown in the embodiment of this application, the shovel protective sleeve is installed on the shovel head 120 of the shovel 100. The shovel protective sleeve includes a mounting shell 200, a sheath 300, and a drive mechanism 400 mounted on the mounting shell 200. The shovel protective sleeve is mounted on the shovel head 120 via the mounting shell 200, which has a mounting groove 230 for accommodating the shovel head 120 and for the sheath 300 to retract into.

[0029] like Figure 2 , Figure 3 and Figure 4As shown, at least a portion of the sheath 300 is located within the mounting groove 230. The sheath 300 has a receiving groove 310 with a first opening 320. The bottom wall of the receiving groove 310 opposite to the first opening 320 has a slot 330 for the blade 130 to enter and exit. A drive mechanism 400 is mounted on the mounting housing 200 and connected to the sheath 300. The drive mechanism 400 drives the sheath 300 to switch between a protective position and a working position. When the sheath 300 is in the protective position, it covers the blade 130; when it is in the working position, it exposes the blade 130. That is, when the shovel protective sheath is mounted on the shovel head 120, as... Figure 3 As shown, when the sheath 300 is in the protective position, it extends out of the mounting groove 230 and covers the blade 130, thus preventing the blade 130 from being exposed and scratching the user or objects. When using the scraper 100, the operating drive mechanism 400 drives the sheath 300 to switch from the protective position to the working position, as shown. Figure 2 As shown, at this time, the protective sleeve 300 retracts into the mounting groove 230 (it can be partially exposed or completely retracted into the mounting groove 230), exposing the blade 130, thus allowing the user to use the scraper 100 for work. The scraper protective sleeve provided in this embodiment does not need to be removed independently when using the scraper 100, solving the technical problem of the scraper protective sleeve being easily lost. Furthermore, the retractable operation of the protective sleeve 300 provided in this embodiment is convenient and easy to use.

[0030] like Figure 4 As shown, the mounting shell 200 includes a first shell 210 and a second shell 220. The first shell 210 and the second shell 220 are detachably connected. The arrangement of the first shell 210 and the second shell 220 facilitates the mounting shell 200 to be installed on the scraper 100. Users can choose to install the scraper protective cover or not according to their preferences.

[0031] In this embodiment, at least one of the first housing 210 and the second housing 220 is provided with a limiting structure 240. The limiting structure 240 is disposed on the inner wall of the mounting groove 230 and is configured to restrict the mounting housing 200 in the length direction of the scraper 100 (e.g., ...). Figure 2 (in the X direction) and / or the width direction of the shovel head 120 (e.g.) Figure 2 The limit structure 240 is configured to limit the position of the mounting shell 200 in the length direction of the blade 100 and the width direction of the blade head 120, or the limit structure 240 is configured to limit the position of the mounting shell 200 in the length direction of the blade 100, or the limit structure 240 is configured to limit the position of the mounting shell 200 in the width direction of the blade head 120.

[0032] In some embodiments of this application, exemplarily, such as Figure 6 As shown, the limiting structure 240 includes a first limiting structure 241, which includes a first limiting surface 242, a second limiting surface 243, and a third limiting surface 244. The first limiting surface 242 is at least partially in contact with the front sidewall 122 of the decorative groove 121, and the first limiting surface 242 cooperates with the front sidewall 122 of the decorative groove 121 to limit the position of the mounting shell 200 in the length direction of the scraper 100. The second limiting surface 243 and the third limiting surface 244 are at least partially in contact with the two sidewalls of the decorative groove 121 in the width direction of the scraper head 120, respectively. The engagement of the limiting surface 243 and the third limiting surface 244 with the two side walls of the decorative groove 121 in the width direction of the shovel head 120 restricts the position of the mounting shell 200 in the width direction of the shovel head 120, preventing the mounting shell 200 from shaking in the width direction of the shovel head 120. In addition, the two side walls of the decorative groove 121 in the width direction of the shovel head 120 are arc-shaped surfaces. The engagement of the second limiting surface 243 and the third limiting surface 244 with the two side walls of the decorative groove 121 in the width direction of the shovel head 120 can also restrict the position of the mounting shell 200 in the length direction of the shovel blade 100.

[0033] like Figure 5 As shown, the limiting structure 240 may further include a second limiting structure 245. The second limiting structure 245 includes a first protruding edge 246 and a second protruding edge 247. The first protruding edge 246 is at least partially in contact with the first side 123 of the shovel head 120, and the second protruding edge 247 is at least partially in contact with the second side 124 of the shovel head 120. The first protruding edge 246 and the second side 124 cooperate, and the second protruding edge 247 and the second side 124 cooperate to define the position of the mounting shell 200 in the length direction of the shovel blade 100 and the width direction of the shovel head 120.

[0034] In the embodiments of this application, the limiting structure 240 can be configured in various ways, including but not limited to the following: 1. One of the first housing 210 and the second housing 220 is provided with the first limiting structure 241; 2. Both the first housing 210 and the second housing 220 are provided with the first limiting structure 241; 3. One of the first housing 210 and the second housing 220 is provided with the second limiting structure 245; 4. Both the first housing 210 and the second housing 220 are provided with the first limiting structure 241; 5. The first limiting structure 241 is disposed on one of the first housing 210 and the second housing 220, and the second limiting structure 245 is disposed on the other of the first housing 210 and the second housing 220.

[0035] For example, such as Figure 5 and Figure 6As shown, in this embodiment, the second limiting structure 245 is disposed on the first housing 210, and the first limiting structure 241 is disposed on the second housing 220. The second limiting structure 245 is provided with multiple card slots 248, and the inner sidewall of the second housing 220 is provided with buckles 221 corresponding to each card slot 248. The second housing 220 and the first housing 210 are engaged through the cooperation of the buckles 221 and the card slots 248. In other words, the second limiting structure 245 serves both as a limiting mechanism and as a locking structure for the buckles 221. The card slots 248 are located on the second limiting structure 245, facilitating the disassembly of the first housing 210 and the second housing 220.

[0036] In some embodiments of this application, the sheath 300 is a soft rubber sleeve. The soft rubber sleeve can better fit with the blade 130 and better fit with the inner wall of the mounting shell 200, reducing the amount of dust and particles scraped by the scraper 100 that get stuck between the sheath 300 and the blade 130, and also reducing the amount of dust and particles scraped by the scraper 100 that get stuck between the sheath 300 and the inner wall of the mounting shell 200.

[0037] like Figure 5 and Figure 6 As shown, to further increase the fit between the soft rubber sleeve and the blade 130, as well as the fit between the soft rubber sleeve and the inner wall of the mounting housing 200, a raised pressure strip 250 is provided at the opening edge of the mounting groove 230. That is, the mounting housing 200 has a raised pressure strip 250 on the inner wall near the opening of the mounting groove 230. After the first housing 210 and the second housing 220 are mated and connected, the raised pressure strip 250 presses the soft rubber sleeve, so that the soft rubber sleeve fits better on the blade 130.

[0038] In some embodiments of this application, in order to reduce the deflection of the sheath 300 when switching from the protective position to the working position, the side wall of the mounting groove 230 is provided with a limiting protrusion 260. When the sheath 300 is in the working position, the side of the sheath 300 on the first opening 320 side abuts against the limiting protrusion 260. That is, when the sheath 300 switches from the protective position to the working position, if one side switches to the position first, the limiting protrusion 260 will abut against the side of the sheath 300 that is in position first, thereby correcting the portion of the sheath 300 that is in position later.

[0039] In some embodiments of this application, such as Figure 6 and Figure 7As shown, to prevent the sheath 300 from accidentally moving into the mounting groove 230 and exposing the blade 130, the side wall of the mounting groove 230 is provided with a retaining protrusion 270, and the sheath 300 is provided with a retaining arm 340 at the outer edge of the first opening 320. When the sheath 300 is in the protective position, the retaining arm 340 abuts against the side of the retaining protrusion 270 closest to the sheath 300. When the sheath 300 switches from the protective position to the working position, the retaining arm 340 deforms and disengages from the retaining protrusion 270. In other words, when the sheath 300 is in the protective position, the retaining arm 340 abuts against the retaining protrusion 270 to prevent the sheath 300 from retracting into the mounting groove 230 and exposing the blade 130 due to accidental contact by the user. When the sheath 300 switches from the protective position to the working position, the drive mechanism 400 drives the sheath 300 to switch positions. At this time, the blocking arm 340 is deformed by force. The end of the blocking arm 340 that abuts against the blocking protrusion 270 passes the abutment point between the two and disengages from the abutment with the blocking protrusion 270. When the sheath 300 switches back to the protective position, the blocking arm 340 restores its deformation and resumes abutment with the blocking protrusion 270.

[0040] In this embodiment, for ease of operation, part of the drive mechanism 400 is located on the outside of the mounting housing 200, and part of the drive mechanism 400 extends into the mounting groove 230 and connects to the sheath 300. For example, Figure 4 and Figure 8 As shown, in some embodiments of this application, the drive mechanism 400 includes a pusher 410, which is mounted on the mounting housing 200. Part of the pusher 410 is located outside the mounting housing 200, and part of the pusher 410 extends into the mounting groove 230 and connects to the sheath 300. The pusher 410 is movable between a first position and a second position. When the pusher 410 is in the first position, the sheath 300 is in the protective position. When the pusher 410 moves from the first position to the second position, it drives the sheath 300 to move from the protective position to the working position. That is, the first position of the pusher 410 corresponds to the protective position of the sheath 300, and the second position of the pusher 410 corresponds to the working position of the sheath 300. This embodiment achieves the switching between the protective position and the working position of the sheath 300 by pushing the pusher 410 between the first and second positions, making the operation simple and convenient.

[0041] For example, the mounting housing 200 is provided with a guide mounting hole 280, which passes through the outer side of the mounting housing 200 and the mounting groove 230. The pusher 410 is provided with two opposing snap-fit ​​arms 411, and the free end of the snap-fit ​​arm 411 is provided with a snap protrusion 412. The snap-fit ​​arm 411 extends from the guide mounting hole 280 into the mounting groove 230. The snap protrusion 412 and the pusher 410 respectively abut against the edges of the guide mounting hole 280 on both sides in the axial direction, so that the pusher 410 is installed in the guide mounting hole 280 and moves along the guide mounting hole 280. In other words, the pusher 410 extends into the mounting groove 230 from the guide mounting hole 280 by the deformation of the two snap-fit ​​arms 411. After the snap-fit ​​arms 411 extend into the mounting groove 230, they restore their deformation so that the snap-fit ​​protrusion 412 abuts against the side wall of the mounting groove 230 located around the guide mounting hole 280. This allows the pusher 410 to snap into the guide mounting hole 280 and move along the guide mounting hole 280.

[0042] In some embodiments of this application, a connector 420 is provided on the pusher 410, and the pusher 410 is connected to the sheath 300 through the connector 420. In the embodiments of this application, the connector 420 and the pusher 410 can be an integrally formed structure or a detachable structure, and no specific limitation is made here.

[0043] This application embodiment also provides a shovel 100, which includes a shovel head 120 and a shovel protective sleeve of any of the above-described embodiments, the shovel protective sleeve being installed on the shovel head 120. Example 2

[0044] The shovel protective sleeve provided in this embodiment is basically the same as the shovel protective sleeve provided in Embodiment 1, except that the structure of the mounting shell is different, such as... Figure 9 As shown, in this embodiment, the structure of the mounting shell 200 is similar to the second mounting shell 220 in Embodiment 1. The mounting shell 200 is provided with a first limiting structure 241, a raised pressure strip 250, a limiting protrusion 260, and a blocking protrusion 270. The mounting shell 200 is mounted on the shovel head 120 by fasteners. Half of the sheath 300 is located between the mounting shell 200 and the shovel head 120, and half of it is exposed. The drive mechanism 400 is mounted on the mounting shell 200, and the drive mechanism 400 drives the sheath 300 to switch between the protective position and the working position.

[0045] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0046] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A shovel protective sleeve, characterized in that, include: Mounting housing, the mounting housing having a mounting groove, the mounting housing being configured to be mounted on the shovel head of a shovel blade; The sheath, at least a portion of which is located within the mounting groove, has a receiving groove with a first opening, and the bottom wall of the receiving groove opposite to the first opening has a slit for the blade to enter and exit. A drive mechanism is mounted on the mounting housing and connected to the protective sleeve. The drive mechanism drives the protective sleeve to switch between a protective position and a working position. When the protective sleeve is in the protective position, it covers the blade. When the protective sleeve is in the working position, it exposes the blade.

2. The shovel protective sleeve according to claim 1, characterized in that, The mounting housing includes a first housing and a second housing, which are detachably connected. At least one of the first housing and the second housing is provided with a limiting structure, the limiting structure being disposed on the inner wall of the mounting groove, the limiting structure being configured to restrict the movement of the mounting housing in the length direction of the shovel and / or the width direction of the shovel head.

3. The shovel protective sleeve according to claim 2, characterized in that, The limiting structure includes a first limiting structure, which includes a first limiting surface, a second limiting surface, and a third limiting surface. The first limiting surface is at least partially in contact with the front sidewall of the decorative groove of the shovel head, and the second limiting surface and the third limiting surface are at least partially in contact with the two sidewalls of the decorative groove in the width direction of the shovel head, respectively.

4. The shovel protective sleeve according to claim 2, characterized in that, The limiting structure includes a second limiting structure, which includes a first protruding edge and a second protruding edge. The first protruding edge is at least partially attached to the first side of the shovel head, and the second protruding edge is at least partially attached to the second side of the shovel head. The first side and the second side are respectively the two arc-shaped outer sides of the portion of the shovel head near the handle in the width direction.

5. The shovel protective sleeve according to claim 4, characterized in that, The second limiting structure is disposed on the first housing, and the second limiting structure is provided with multiple card interfaces; The inner sidewall of the second housing is provided with buckles corresponding to each of the card interfaces, and the second housing and the first housing are snapped together by the cooperation of the buckles and the card interfaces.

6. The shovel protective sleeve according to any one of claims 1-5, characterized in that, The sheath is a soft rubber sleeve.

7. The shovel protective sleeve according to claim 6, characterized in that, The opening edge of the mounting groove is provided with a raised pressure strip.

8. The shovel protective sleeve according to any one of claims 1-5, characterized in that, The side wall of the mounting groove is provided with a limiting protrusion; When the sheath is in the working position, the side of the sheath on the first opening side abuts against the limiting protrusion.

9. The shovel protective sleeve according to any one of claims 1-5, characterized in that, The side wall of the installation is provided with abutment protrusions; The sheath has a stop arm at the outer edge of the first opening; When the sheath is in the protective position, the blocking arm abuts against the side of the blocking protrusion closest to the sheath. When the sheath switches from the protective position to the working position, the blocking arm deforms and disengages from the blocking protrusion.

10. The shovel protective sleeve according to any one of claims 1-5, characterized in that, The drive mechanism includes a pusher, which is mounted on the mounting housing. Part of the pusher is located outside the mounting housing, and part of the pusher extends into the mounting groove and connects to the protective sleeve. The pusher is movable between a protective position and a working position. When the pusher is in the protective position, the sheath is in the protective position. When the pusher moves from the protective position to the working position, the pusher drives the sheath to move from the protective position to the working position.

11. The shovel protective sleeve according to claim 10, characterized in that, The mounting housing is provided with a guide mounting hole, which passes through the outer side of the mounting housing and the mounting groove; The pusher has two opposing snap-fit ​​arms, and the free end of each snap-fit ​​arm has a snap-fit ​​protrusion. The snap-fit ​​arm extends into the mounting groove from the guide mounting hole. The snap-fit ​​protrusion and the pusher respectively abut against the axial edges of the guide mounting hole, so that the pusher is mounted in the guide mounting hole and moves along the guide mounting hole.

12. A shovel, characterized in that, It includes a shovel head and a shovel protective sleeve as described in any one of claims 1-11, wherein the shovel protective sleeve is installed on the shovel head.

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