Scraper knife

Abstract

The scraper knife comprises a blade, a shell and a connecting piece, a containing cavity is formed in the shell, and an opening is formed in one side of the containing cavity; the shell is also provided with a first limiting part; the connecting piece is mounted in the accommodating cavity in a sliding manner; the connecting piece comprises an external connecting part for mounting the blade and a second limiting part matched with the first limiting part; when the connecting piece slides from the first position to the second position, the second limiting part is matched with the first limiting part to prevent the connecting piece from continuously sliding towards the opening direction, at the moment, the blade extends out of the containing cavity through the opening part, and the scraper knife is in a working state; when acting force perpendicular to the sliding direction is applied to at least one of the second limiting part and the first limiting part, the second limiting part and the first limiting part can be disengaged to release the connecting piece, and when the connecting piece slides to the third position, the blade is in a replaceable state at the moment.

Description

Technical Field

[0001] This utility model relates to the field of cleaning devices, and more particularly to a shovel blade. Background Technology

[0002] A scraper is a tool used to remove adhesive residue such as wall stickers, car window tints, and surface adhesives. The scraper blade is controlled by a button, which slides to different positions to put the blade into different states: a stored state inside the housing, a working state partially exposed outside the housing, and a replacement state fully exposed outside the housing. Existing scrapers lack a limiting mechanism when the user sets the blade to the working state, making it easy to accidentally push the blade directly to the replacement state, causing the blade to fall out and affecting the user experience. Utility Model Content

[0003] In view of this, the present invention provides a shovel blade to solve the problems of shovel blades in the prior art.

[0004] To achieve one, some, or all of the above objectives, or other objectives, this utility model proposes:

[0005] A shovel, the shovel comprising:

[0006] blade;

[0007] The housing has an internal storage cavity with an opening on one side; the housing also has a first limiting part.

[0008] The connector is slidably installed in the storage cavity; the connector includes an external part for mounting the blade and a second limiting part that cooperates with the first limiting part;

[0009] When the connector slides from the first position to the second position, the second limiting part cooperates with the first limiting part to prevent the connector from continuing to slide towards the opening. At this time, the blade extends out of the storage cavity through the opening and the shovel is in working condition.

[0010] When a force perpendicular to the sliding direction is applied to at least one of the second limiting part and the first limiting part, the second limiting part can be disengaged from the first limiting part to release the connecting member. When the connecting member slides to the third position, the blade is in a replaceable state.

[0011] Implementing the embodiments of this utility model will have the following beneficial effects:

[0012] With the aforementioned scraper blade, the second limiting part cooperates with the first limiting part to restrict the sliding of the connecting part. While controlling the sliding of the connecting part with one hand, the user needs to use the other hand to apply corresponding force to the second limiting part or the first limiting part to release the cooperation between the first limiting part and the second limiting part, so that the connecting part can continue to slide. This method allows the user to avoid pushing the blade directly from the storage state to the replacement state when using the scraper blade with one hand, and to prevent the blade from not being kept in the working state for use. It also prevents the user from making mistakes when using the scraper blade and prevents the blade from falling off the scraper blade, thereby improving the user experience. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of Example 1. Figure 1 The image shows the shovel in its stowed state.

[0015] Figure 2 This is a schematic diagram of the overall structure of Example 1. Figure 2 The image shows the shovel in operation.

[0016] Figure 3 This is a schematic diagram of the overall structure of Example 1. Figure 3 The image shows the blade in a replaceable position.

[0017] Figure 4 This is a schematic diagram of the exploded assembly structure of Example 1;

[0018] Figure 5 This is a cross-sectional view of the overall structure of Embodiment 1;

[0019] Figure 6 for Figure 5 Enlarged view of part A in the image;

[0020] Figure 7 This is a three-dimensional structural cross-sectional view of Embodiment 1;

[0021] Figure 8 This is a schematic diagram of the connector structure in Embodiment 1;

[0022] Figure 9 This is a side view of the connector in Embodiment 1;

[0023] Figure 10This is a schematic diagram showing the separation of the housing and auxiliary button in Embodiment 1;

[0024] Figure 11 This is a schematic diagram of the overall structure of Example 2. Figure 1 The image shows the shovel in its stowed state;

[0025] Figure 12 This is a schematic diagram of the overall structure of Example 2. Figure 2 The image shows the shovel in operation.

[0026] Figure 13 This is a schematic diagram of the exploded assembly structure of Example 2;

[0027] Figure 14 This is a cross-sectional view of the overall structure of Embodiment 2;

[0028] Figure 15 This is a schematic diagram of the overall structure of Example 3. Figure 1 The image shows the shovel in its stowed state;

[0029] Figure 16 This is a schematic diagram of the overall structure of Example 3. Figure 2 The image shows the shovel in operation.

[0030] Figure 17 This is a schematic diagram of the exploded assembly structure of Example 3;

[0031] Figure 18 This is a schematic diagram of the shell structure in Embodiment 3;

[0032] Figure 19 This is a top view of the connector in Embodiment 3;

[0033] Figure 20 This is a cross-sectional view of the overall structure of Embodiment 3;

[0034] Figure 21 This is a schematic diagram of the overall structure of Example 4. Figure 1 The image shows the shovel in its stowed state;

[0035] Figure 22 This is a schematic diagram of the overall structure of Example 4. Figure 2 The image shows the shovel in operation.

[0036] Figure 23 This is a schematic diagram of the exploded assembly structure of Example 4;

[0037] Figure 24 This is a cross-sectional view of the overall structure of Embodiment 4;

[0038] Figure 25 for Figure 24 Enlarged view of part B in the image;

[0039] Figure 26 This is a schematic diagram of the overall structure of Example 5. Figure 1 The image shows the shovel in its stowed state;

[0040] Figure 27 This is a schematic diagram of the overall structure of Example 5. Figure 2 The image shows the shovel in operation.

[0041] Figure 28 This is a schematic diagram of the exploded assembly structure of Example 5;

[0042] Figure 29 This is a cross-sectional view of the overall structure of Example 5;

[0043] Figure 30 This is a schematic diagram of the overall structure of Example 6. Figure 1 The image shows the shovel in its stowed state;

[0044] Figure 31 This is a schematic diagram of the overall structure of Example 6. Figure 2 The image shows the shovel in operation.

[0045] Figure 32 This is a schematic diagram of the exploded assembly structure of Example 6;

[0046] Figure 33 This is a schematic diagram of the connector structure in Embodiment Six;

[0047] Figure 34 This is a cross-sectional view of the overall structure of Example 6;

[0048] Figure 35 This is a schematic diagram of the overall structure of Embodiment 7, showing the shovel in a stowed state;

[0049] Figure 36 This is a schematic diagram of the exploded assembly structure of Example 7;

[0050] Figure 37 This is a schematic diagram showing the separation of the housing and control components in Example 7;

[0051] Figure 38 This is a schematic diagram of the limiting rod structure in Example 7;

[0052] Figure 39 This is a schematic diagram showing the separation of the control components in Example 7;

[0053] Figure 40 This is a schematic diagram showing the minimum diameter of the transmission block in Embodiment 7 facing the limiting rod;

[0054] Figure 41 This is a schematic diagram showing the maximum diameter of the transmission block in Embodiment 7 facing the limiting rod;

[0055] Figure 42 This is a schematic diagram of the assembly structure of the transmission block and the limiting rod in Example 7;

[0056] in:

[0057] 1-Blade;

[0058] 2-Shell; 20-Receiving cavity; 200-Opening; 201-Apartment space; 21-Upper shell; 22-Lower shell; 23-First limiting part; 231-Limiting wall; 232-Limiting hole; 233-Limiting rod; 2330-Limiting block; 2331-Arc-shaped contact surface; 234-Elastic reset component; 2340-U-shaped elastic rod; 24-Guide hole; 240-Initial hole; 241-First end; 242-Second end; 25-Arc-shaped guide groove; 26-Slide groove; 27-U-shaped groove; 28-First limiting groove;

[0059] 3-Connector; 30-Operation button; 300-Limiting protrusion; 31-Main body; 310-Mounting hole; 32-External part; 320-Fixing plate; 3200-Locking protrusion; 321-Moving plate; 3210-Locking hole; 33-Second limiting part; 330-Fixing end; 3300-Outer surface; 331-Limiting end; 3310-Vertical plate; β-First included angle; 332-Limiting button; 3320-Limiting platform; 3321-Guide column; 334-Second limiting slot; 34-Elastic part; 340-Elastic support foot; 341-Connecting end; 342-Moving end; 343-Elastic space;

[0060] 4-Auxiliary button; 40-Avoidance surface; 41-Elastic pressing plate; 42-Modible button; 420-Connecting block;

[0061] 5 - Control component; 500 - Knob; 510 - Transmission block; D1 - Maximum diameter; D2 - Minimum diameter; 52 - Guide protrusion; Detailed Implementation

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0063] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0064] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0065] See appendix Figure 1 -Appendix Figure 42 This utility model proposes a spatula, which includes a blade 1, a housing 2, and a connector 3. The housing 2 has a storage cavity 20 inside, and an opening 200 on one side of the storage cavity 20. Specifically, the housing 2 is composed of an upper shell 21 and a lower shell 22 that interlock with each other. The upper shell 21 and the lower shell 22 enclose the storage cavity 20. The housing 2 as a whole adopts a strip-shaped flat structure, and the storage cavity 20 is correspondingly long and flat. The strip-shaped flat housing 2 makes it easy for users to hold and use the spatula with one hand. An opening 200 is formed at the front end of the housing 2 to connect the storage cavity 20 with the outside, so that the blade 1 can enter and exit the storage cavity 20 through the opening 200. The housing 2 also has a first limiting part 23. The connector 3 is slidably installed in the storage cavity 20 and can move along the length direction of the storage cavity 20. The connector 3 includes an external part 32 for installing the blade 1 and a second limiting part 33 that engages with the first limiting part 23.

[0066] It should also be noted that the connector 3 has a first position, a second position, and a third position; when the connector 3 is in the first position, the blade 1 is completely housed within the storage cavity 20, and the shovel is in a stored state, making it convenient for the user to carry and store the shovel; when the connector 3 slides from the first position to the second position, the second limiting part 33 cooperates with the first limiting part 23 to prevent the connector 3 from continuing to slide towards the opening 200 (e.g., Figure 5(As shown in the X-axis direction), at this time, the blade 1 extends out of the storage cavity 20 through the opening 200, and the scraper is in working condition. The user can control the blade 1 to scrape and remove foreign objects on the table and glass by holding the housing 2. Applying a force perpendicular to the sliding direction of the connector 3 to at least one of the second limiting part 33 and the first limiting part 23 can disengage the second limiting part 33 from the first limiting part 23, thereby releasing the connector 3. The connector 3 can continue to slide towards the opening 200 to the third position, so that the blade 1 is fully extended out of the storage cavity 20, and the blade 1 is in a replaceable state. The user can replace the blade 1 at this time. Therefore, in this embodiment, after the second limiting part 33 and the first limiting part 23 cooperate, a force perpendicular to the sliding direction of the connecting member 3 needs to be applied to the second limiting part 33 or the first limiting part 23. While the user is controlling the sliding of the connecting member 3 with one hand, after the first limiting part 23 and the second limiting part 33 cooperate to restrict the sliding of the connecting member 3, the other hand is needed to apply a corresponding force to the second limiting part 33 or the first limiting part 23 to release the cooperation between the first limiting part 23 and the second limiting part 33 so that the connecting member 3 can continue to slide. This method allows the user to avoid pushing the blade 1 directly from the storage state to the replacement state when using the shovel with one hand, and the blade 1 not being able to stay in the working state for use. It also avoids user misoperation when using the shovel and prevents the blade 1 from falling off the shovel, thereby improving the user experience.

[0067] To improve the stability of the sliding connection between connector 3 and storage cavity 20, connector 3 adopts the following... Figure 8 and Figure 9 The flat plate-like structure shown in this embodiment includes an operation button 30 and a main body 31. The two ends of the main body 31 are respectively connected to the operation button 30 and the external part 32. That is, the operation button 30 is set at the end of the main body 31 away from the external part 32, so that there is a gap between the user's control area and the blade 1, which improves the safety when using the shovel and makes it convenient for the user to drive the connector 3 to slide with the operation button 30, thereby controlling the blade 1 to enter and exit the storage cavity 20.

[0068] In some embodiments, the second limiting portion 33 is elastic, and by applying force to the second limiting portion 33, the second limiting portion 33 can be disengaged from the first limiting portion 23.

[0069] like Figure 1 -Appendix Figure 10 Example 1 shown:

[0070] The second limiting part 33 includes a fixed end 330 connected to the main body 31 and a limiting end 331. The limiting end 331 is inclined relative to the main body 31 and extends toward the opening 200. When the connecting member 3 slides to the second position, the limiting end 331 abuts against the first limiting part 23. In this embodiment, refer to the attached drawing. Figure 5 -Appendix Figure 9 The first limiting part 23 includes a limiting wall 231, which is located on the inner side of the housing 2. The second limiting part 33 forms a first included angle β with the connecting member 3, which faces the opening 200. When the connecting member 3 is in the first position, the limiting end 331 abuts against the inner wall of the housing 2, and the first included angle β faces the limiting wall 231. This prevents the connecting member 3 from sliding from the first position to the second position, as the limiting end 331 abuts against the limiting wall 231, thus restricting the connecting member 3 from sliding further toward the opening 200. This keeps the shovel in the working state. During this process, since the limiting end 331 always abuts against the inner wall of the housing 2, and the first included angle β faces the limiting wall 231, the user can switch the shovel from the stored state to the working state without performing any operation other than pushing the connecting member 3. Pushing the connecting member 3 in the opposite direction switches the shovel from the working state to the stored state, making it easy for the user to use. The shovel is in operation; when the blade 1 needs to be replaced, the other hand presses the limiting end 331, causing the second limiting part 33 to deform towards the main body 31, thus disengaging the limiting end 331 from the limiting wall 231. At this time, the connecting piece 3 can be pushed towards the opening 200, allowing the blade 1 to fully extend out of the storage cavity 20 for replacement. In this position, the limiting end 331 is still in contact with the inner wall of the housing 2, and the first included angle β faces away from the limiting wall 231. The limiting end 331 is flat towards the fixed end 330, so that when the connecting piece 3 slides from this position to the second position, the limiting end 331 will not be interfered with by the limiting wall 231. That is, the connecting piece 3 can slide smoothly from this position to the first position, allowing the user to quickly switch to the working state or the storage state after replacing the blade 1 with the shovel, making it easier for the user to use the shovel and greatly improving the user experience.

[0071] It should also be noted that the limit end 331 can also be designed as follows: Figure 8 The vertical plate 3310 shown increases the contact area between the limiting end 331 and the limiting wall 231, thereby improving the stability of the blade 1 when it is in working condition.

[0072] like Figure 9As shown, the angle range of the first included angle β is 5-85 degrees. If the angle of the first included angle β is too small, the limiting end 331 will not be able to stably abut against the limiting wall 231. If the angle of the first included angle β is too large, the second limiting part 33 will occupy the space in the thickness direction of the storage cavity 20, which will result in the shell 2 being too thick and inconvenient for the user to use the spatula. Since the second limiting part 33 needs to repeatedly abut against the limiting wall 231, an excessively large angle of the first included angle β will also easily cause the second limiting part 33 to break, which is not conducive to the long-term use of the spatula. Based on this, in this embodiment, the angle of the first included angle β is set to 6.5 degrees to avoid the shell 2 being too thick, to facilitate the user to use the spatula, and to improve the service life of the spatula.

[0073] To facilitate user control of the detachment of the limiting end 331 from the limiting wall 231, the scraper also includes an auxiliary button 4, such as... Figure 4 , Figure 6 and Figure 10 As shown, the auxiliary button 4 is movably connected to the housing 2. When the connecting piece 3 slides to the second position, the auxiliary button 4 corresponds to the limiting end 331. Pressing the auxiliary button 4 can push the limiting end 331 to disengage from the limiting wall 231. Specifically, the second limiting part 33 includes an outer surface 3300 extending from the fixed end 330 to the limiting end 331. The auxiliary button 4 is provided with an inclined clearance surface 40. When the connecting piece 3 slides to the second position, the clearance surface 40 fits against the outer surface 3300. The mutually fitting clearance surface 40 and outer surface 3300 can increase the contact area between the auxiliary button 4 and the second limiting part 33, so that when the user presses the auxiliary button 4, the applied force can be effectively transmitted to the second limiting part 33, causing the limiting end 331 to disengage from the limiting wall 231.

[0074] In this embodiment, the auxiliary button 4 is a movable button 42 independently mounted on the housing 2, and the bottom of the movable button 42 is attached to the limiting end 331, such as... Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 10 As shown, the active button 42 is also provided with two radial connecting blocks 420. The two connecting blocks 420 are symmetrically arranged. A limiting groove for assembling the connecting blocks 420 can also be provided on the inner wall of the housing 2. The connecting blocks 420 are fixedly connected to the limiting groove, so that the active button 42 cannot move along the sliding direction of the connecting member 3. The two connecting blocks 420 make the middle part of the active button 42 suspended. By pressing the active button 42, the bottom of the active button 42 can approach and squeeze the limiting end 331, so that the limiting end 331 is separated from the limiting wall 231. The top of the active button 42 is exposed outside the housing 2, so that the user's finger can press the active button 42.

[0075] like Figures 1-5As shown, the housing 2 is also provided with a guide hole 24 for the operation button 30 to be exposed. The guide hole 24 is an oblong hole, and the length direction of the guide hole 24 is the same as the sliding direction of the connector 3, so that when the operation button 30 slides along the length direction of the guide hole 24, it can drive the blade 1 in and out of the storage cavity 20. For ease of explanation, the guide hole 24 is defined to have a first end 241 and a second end 242 that are far apart from each other. The first end 241 is far away from the opening 200 of the storage cavity 20, and the second end 242 is close to the opening 200 of the storage cavity 20. When the blade 1 is in the storage state, the operation button 30 is in the first end 241; when the blade 1 is in the replacement state, the operation button 30 is in the first end 241. The operation button 30 is located at the second end 242. When the blade 1 is in use, the operation button 30 is located between the first end 241 and the second end 242. Therefore, when the user uses the shovel, by pushing the operation button 30 from the first end 241 to the second end 242, the blade 1 is in working condition when the second limiting part 33 engages with the first limiting part 23. The user needs to apply a force perpendicular to the sliding direction of the connector 3 to the second limiting part 33 or the first limiting part 23 so that the second limiting part 33 disengages from the first limiting part 23. Then, the operation button 30 can be pushed to the second end 242, that is, the blade 1 is in the replacement state.

[0076] In some embodiments, the connector 3 further includes an elastic portion 34, which is provided corresponding to the operation button 30. Since the operation button 30 and the external portion 32 are distributed at the two ends of the main body 31 that are far apart from each other, the main body 31 is connected to the housing 2 through the elastic portions 34 and the external portions 32 at both ends, so that the inner side of the main body 31 and the housing 2 form a clearance space 201. Pressing the operation button 30 will cause one end of the main body 31 to swing toward the clearance space 201. Based on this, the operation button 30 is also provided with a limiting protrusion 300, and the inner side of the housing 2 is provided with two first limiting slots 28, which can engage with the limiting protrusion 300; Figure 4 , Figure 5 , Figure 9As shown, the operation button 30, through the elastic force of the elastic part 34, causes the limiting protrusion 300 to engage with the first limiting groove 28. The two first limiting grooves 28 are distributed at intervals along the sliding direction of the connector 3. When the connector 3 is in the first position, the limiting protrusion 300 engages with the first limiting groove 28 away from the opening 200; at this time, the operation button 30 is located at the first end 241 of the guide hole 24, and the scraper is in the retracted state; when the connector 3 is in the second position, the limiting protrusion 300 engages with the first limiting groove 28 near the opening 200; at this time, the operation button 30 is located between the guide hole 24 and the first limiting groove 28 near the opening 200. Between the first end 241 and the second end 242, the limiting end 331 abuts against the limiting wall 231, and the blade is in working condition. By setting an additional limiting protrusion 300 at the operation button 30, the blade 1 can be kept in the retracted state or the working state. That is, when the operation button 30 is not pressed, the blade 1 in the working state is subject to a double clamping effect of the first limiting part 23 and the second limiting part 33 engaging, and the limiting protrusion 300 engaging with the first limiting groove 28, which improves the stability of the blade 1 in the working state. The double clamping also further avoids the situation of the user operating with one hand.

[0077] In some embodiments, the elastic portion 34 is provided in two sets, and the two sets of elastic portions 34 are symmetrically arranged at one end of the operation button 30. The elastic portion 34 includes, for example, Figure 8 , Figure 9 The two elastic legs 340 shown have one end close together and connected to the operation button 30, while the other end is away from each other and abuts against the housing 2 to form support; as shown Figure 4 As shown, the guide hole 24 is opened in the upper shell 21, and the elastic support leg 340 abuts against the inner wall of the shell 2.

[0078] In some embodiments, for convenient replacement of the blade 1, the external part 32 includes: a fixed plate 320 and a movable plate 321, such as... Figure 3As shown, the fixed plate 320 is integrally formed with the main body 31; the fixed plate 320 is provided with multiple locking protrusions 3200 for restricting the sliding of the blade 1; the movable plate 321 is provided with locking holes 3210 corresponding to the locking protrusions 3200; the movable plate 321 includes a hinged end and a free end; the hinged end is hinged to the main body 31; the free end can swing around the hinged end; when the movable plate 321 is fastened to the fixed plate 320, the locking hole 3210 and the locking protrusion 3200 cooperate to clamp and fix the blade 1. Specifically, the locking protrusion 3200 on the fixing plate 320 is set to correspond to the hole on the blade 1. The blade 1 is a conventional design, which will not be elaborated in this embodiment. The blade 1 is replaced as follows: When the blade 1 slides to the replacement state, the free end of the movable plate 321 can be bent to make the movable plate 321 swing, thereby removing the blade 1 from the fixing plate 320. Then, the new blade 1 is inserted into the corresponding locking protrusion 3200 on the fixing plate 320, and the movable plate 321 is used to clamp and fix it.

[0079] Unlike Embodiment 1, other embodiments can also be combined to form new shovels based on differences such as the second limiting part 33 adopting other elastic structures, the first limiting part 23 adopting other limiting structures, the auxiliary button 4 adopting different forms, and the main body 31 having different structures, such as the various shovels disclosed in the following embodiments. The parts not involved in the following embodiments are the same as or similar to the structure of Embodiment 1, so they will not be described in detail.

[0080] Example 2:

[0081] The overall structure of the shovel is as follows: Figures 11-14As shown, the difference between this embodiment and Embodiment 1 is that the limiting wall 231 is disposed on the inner wall of the second end 242 of the guide hole 24. Since the limiting end 331 is inclined away from the main body 31, it is positioned within the guide hole 24 when not subjected to external force. That is, when the connector 3 is in the first position, the operation button 30 is at the first end 241, the limiting end 331 is in the guide hole 24, and the scraper is in a retracted state. When the connector 3 is in the second position, the operation button 30 is between the first end 241 and the second end 242, the limiting end 331 abuts against the limiting wall 231, and the scraper is in a working state. Because the limiting end 331 is exposed outside the housing 2 through the guide hole 24... The user can directly contact the limiting end 331. Therefore, when the connector 3 is in the second position, the user can directly press the outer surface 3300 of the second limiting part 33 to disengage the limiting end 331 from the limiting wall 231. By continuing to control the operation button 30 to push the connector 3 towards the opening 200, the connector 3 can be pushed to the third position. At this time, the operation button 30 is in the second end 242, the limiting end 331 is in the storage cavity 20, and the blade 1 is fully extended out of the storage cavity 20 and is in a replaceable state. The user can control the operation button 30 to slide the connector 3 away from the opening 200 to switch the blade from the replaceable state to the working state or the storage state.

[0082] Example 3:

[0083] The overall structure of the shovel is as follows: Figures 15-20 As shown, the difference between this embodiment and Embodiment 1 lies in the auxiliary button 4, the elastic part 34, and the guide hole 24. Specifically, the auxiliary button 4 includes an elastic pressing piece 41 integrally formed with the housing 2, as shown... Figure 15 , Figure 17 , Figure 18 As shown, the elastic pressing piece 41 is formed by machining a U-shaped gap on the housing 2, allowing it to deform. When the elastic pressing piece 41 is not subjected to external force, it will not interfere with the abutment between the limiting end 331 and the limiting wall 231 due to its inclined clearance surface 40. Furthermore, the bottom of the elastic pressing piece 41 is in contact with the limiting end 331. When the user presses the elastic pressing piece 41, the limiting end 331 can disengage from the limiting wall 231. The one-piece molded elastic pressing piece 41 helps reduce the processing cost of the shovel and allows for a flatter, thinner form, making it easier for users to carry and store.

[0084] like Figure 16 As shown, the guide hole 24 of the scraper is opened on the side of the housing 2, that is, the guide hole 24 is opened in the thickness direction of the housing 2. Therefore, the elastic part 34 is different from that in Embodiment 1. Specifically, the elastic part 34 includes a connecting end 341 and a movable end 342; as Figure 17 and Figure 19As shown, the connecting end 341 is connected to the outer wall of the main body 31; the movable end 342 is used to connect the operation button 30; a narrow elastic space 343 is formed between the elastic part 34 and the outer wall of the main body 31; the movable end 342 can elastically displace toward the elastic space 343. In this embodiment, the elastic part 34 is a slender rod-shaped or plate-shaped structure, and the connector 3 is made of deformable plastic, so that when the movable end 342 is subjected to external force, it can move toward the main body 31 along the elastic space 343, and when it is not subjected to external force, it moves away from the outer wall of the main body 31 under its own elastic action. Correspondingly, the limiting protrusion 300 is provided at the very end of the movable end 342, and the first limiting groove 28 is opened on the side wall of the housing 2. In this embodiment, the elastic part 34 is used when the guide hole 24 is opened on the side of the housing 2. The operation button 30 connected to the movable end 342 is exposed to the housing 2 through the guide hole 24. This form is beneficial to reduce the thickness of the housing 2, making the shovel flatter.

[0085] Example 4:

[0086] The overall structure of the shovel is as follows: Figures 21-25As shown, the difference from Embodiment 1 is that the second limiting part 33 adopts an independent button with elasticity, and there is no need to set an auxiliary button 4 on the housing 2. Specifically, the second limiting part 33 includes a limiting button 332 and an elastic part 34 connected to the limiting button 332. A mounting hole 310 for mounting the limiting button 332 is provided on the main body 31. The limiting button 332 can slide along the axial direction of the mounting hole 310. The axial direction of the mounting hole 310 is perpendicular to the sliding direction of the connecting member 3, so that the limiting button 332 can slide together with the connecting member 3. In this embodiment, the elastic part 34 adopts the same elastic support 340 as in Embodiment 1. The elastic support 340 provides the limiting button 332 with the elastic force for reset. When the connecting member 3 slides to the second position, under the elastic force of the elastic support 340, the limiting button 332 abuts against the limiting wall 231. At this time, a through hole can be opened in the housing 2 at the position corresponding to the limiting wall 231 so that the limiting button 332 is exposed. The housing 2 facilitates the user's pressing of the limit button 332. In this embodiment, during the process of the connecting member 3 moving from the first position to the second position and from the second position to the third position, the top of the limit button 332 abuts against the inner side of the housing 2, and the elastic support leg 340 is compressed and stores energy under the pressure of the housing 2. Only when the connecting member 3 is in the second position is the limit button 332 exposed through the through hole in the housing 2, and the limit button 332 abuts against the limiting wall 231, and the elastic support leg 340 releases its elastic energy storage state. When the connecting member 3 is in the second position, the user can directly press the limit button 332 to disengage it from the limiting wall 231. At this time, the user can control the operation button 30 to make the connecting member 3 continue to slide towards the opening 200, so that the blade 1 can be fully extended out of the storage cavity 20 for easy replacement. It should be noted that the elastic part 34 can also be constructed using a structure such as a compression spring.

[0087] Example 5:

[0088] The overall structure of the shovel is as follows: Figures 26-29 As shown, the difference from Embodiment 1 is that the limiting wall 231 is set at the second end 242 of the guide hole 24, and the second limiting part 33 adopts the limiting button 332 and elastic support foot 340 provided in Embodiment 4; the second limiting wall 231 is opened on the inner wall of the second end 242 of the guide hole 24, which has been described in detail in Embodiment 2, so it will not be repeated here. That is, the way to use the shovel provided in this embodiment is similar to that in Embodiment 2. The difference is that in this embodiment, the user can directly press the limiting button 332 through the guide hole 24 to make it disengage from the limiting wall 231.

[0089] Example 6:

[0090] The overall structure of the shovel is as follows: Figures 30-33As shown, the difference from Embodiment 1 is that the second limiting part 33 includes a limiting button 332, and the limiting button 332 differs in structure from that in Embodiments 4 and 5. The first limiting part 23 is a structure set on the guide hole 24. Specifically, the limiting button 332 is located at the end of the main body 31 away from the external part 32, and the limiting button 332 is coaxially connected to the operation button 30 in Embodiment 1. The limiting button 332 includes a limiting platform 3320 and a guide post 3321 coaxially connected. The bottom of the limiting platform 3320 is used to connect to the elastic part 34, and the top of the limiting platform 3320 is connected to the operation button 30 through the guide post 3321. In addition, there are two sets of elastic parts 34, which provide stable support and stable elastic reset for the limiting button 332 and the operation button 30. In this embodiment, the first limiting part 23 includes a limiting hole 232, which is formed on the guide hole 24. The guide hole 24 is provided with a limiting platform 3320 that can engage with the limiting platform 232. When the connecting member 3 slides to the second position, the limiting platform 3320 engages with the limiting platform 232. Pressing the limiting button 332 causes the limiting platform 3320 to disengage from the limiting platform 232. By engaging the limiting platform 3320 with the limiting platform 232, the connecting member 3 is restricted from sliding towards the opening 200. Pressing the operation button 30 causes the limiting platform 3320 to sink and disengage from the limiting platform 232. At this time, the guide post 3321 can slide along the length of the guide hole 24. Figure 34 The elastic support 340 shown provides a clearance space 201 between the limiting platform 3320 and the inner side of the housing 2. When no external force is applied, the limiting platform 3320 can enter the limiting hole 232 under the elastic force of the elastic part 34. Since the width of the guide hole 24 is smaller than the outer diameter of the limiting platform 3320, the coaxially connected operation button 30 cannot slide along the length direction of the guide hole 24, thus keeping the blade 1 in the working state. Conversely, by pressing the operation button 30, the limiting platform 3320 is disengaged from the limiting hole 232. At this time, the guide post 3321 enters the limiting hole 232. Since the outer diameter of the guide post 3321 is smaller than the width of the guide hole 24, the guide post 3321 is not interfered with by the inner wall of the limiting hole 232 and can slide along the length direction of the guide hole 24.

[0091] In some embodiments, the first end 241 of the guide hole 24 is further provided with an initial locking hole 240 for engaging with the limiting stage 3320, such as Figure 32As shown, the distance between the initial locking hole 240 and the opening 200 is greater than the distance between the limiting locking hole 232 and the opening 200. That is, when the connector 3 slides to the first position, the limiting platform 3320 engages with the initial locking hole 240, and the shovel is in a stored state. Through the engagement of the limiting platform 3320 with the initial locking hole 240, the operation button 30 cannot slide when it is not pressed, thus preventing the operation button 30 from sliding in the guide hole 24 due to vibration when the shovel is placed in a backpack or pocket.

[0092] Example 7:

[0093] The overall structure of the shovel is as follows: Figures 35-42 As shown, the difference from Embodiment 1 is that the first limiting part 23 is elastic, while the second limiting part 33 is a non-elastic structure. Specifically, the second limiting part 33 includes a second limiting groove 334 formed on the main body 31; the first limiting part 23 includes at least one limiting rod 233 and an elastic reset member 234 connected to the limiting rod 233; the limiting rod 233 is slidably installed in the receiving cavity 20, and the sliding direction of the limiting rod 233 is perpendicular to the sliding direction of the connecting member 3; the limiting rod 233 is provided with a limiting block 2330, which can engage with the second limiting groove 334; as Figure 37 , Figure 38 , Figure 40 , Figure 41 , Figure 42 As shown, a groove 26 is provided on the inner side of the housing 2 for the sliding of the limiting rod 233, ensuring that the limiting rod 233 slides back and forth in a single straight line along the length of the groove 26; when the limiting rod 233 is installed in the groove 26, the limiting rod 233 is in contact with the surface of the connecting piece 3, and the limiting block 2330 is set as a structure that protrudes radially along the limiting rod 233, so that the limiting rod 233 presents an L-shaped rod structure as a whole.

[0094] To facilitate user control of the sliding of the limit lever 233, such as Figures 35-37 As shown, the shovel also includes a control component 5. The control component 5 is movably mounted on the housing 2 and is drivenly connected to the limiting rod 233. The user can drive the limiting rod 233 to slide through the control component 5, causing the limiting block 2330 to engage with the second limiting slot 334, or causing the limiting block 2330 to disengage from the second limiting slot 334. For example, the control component 5 can be configured to slide on the housing 2, with one part exposed outside the housing 2 for easy user operation, and the other part entering the storage cavity 20 and fixedly connected to the limiting rod 233. By setting the sliding direction of the control component 5 to be consistent with the sliding direction of the limiting rod 233, the user can push the part of the control component 5 exposed outside the housing 2 to make the limiting rod 233 slide, thereby engaging the limiting block 2330 with the second limiting slot 334 or disengaging the limiting block 2330 from the second limiting slot 334.

[0095] In this embodiment, two limiting rods 233 are symmetrically arranged, and each of the two limiting rods 233 has an arc-shaped contact surface 2331 at one end that is close to each other; the control component 5 includes a knob 500 rotatably mounted on the housing 2 and a transmission block 510 coaxially fixed with the knob 500; the two ends of the elastic reset component 234 are respectively connected to the two limiting rods 233, and the elastic reset component 234 can make the two limiting rods 233 move closer to each other, and the limiting block 2330 can be inserted into the second limiting slot 334; Figure 40 and Figure 41 As shown, the peripheral wall of the transmission block 510 simultaneously abuts against the arc-shaped contact surfaces 2331 of the two limiting rods 233. The transmission block 510 has a maximum diameter D1 and a minimum diameter D2. By rotating the knob 500, the transmission block 510 can be positioned with its two ends of the maximum diameter D1 facing the limiting rod 233 or its two ends of the minimum diameter D2 facing the limiting rod 233. Specifically, the transmission block 510 can preferentially adopt the following configuration: Figure 39 The elliptical block shown drives two limit rods 233 simultaneously through the regular elliptical outer wall, ensuring that the sliding strokes of the two limit rods 233 are consistent.

[0096] like Figure 41 As shown, when the transmission block 510 is at both ends of the maximum diameter D1 facing the limiting rod 233, the limiting rod 233 overcomes the elastic force of the elastic reset member 234, causing the limiting block 2330 to disengage from the second limiting slot 334. At this time, the connecting member 3 can slide in the storage cavity 20.

[0097] like Figure 40 As shown, when the transmission block 510 is positioned with both ends of the minimum diameter D2 facing the limiting rod 233, the two limiting rods 233 move closer to each other under the elastic force of the elastic reset member 234, so that the limiting block 2330 can be inserted into the second limiting slot 334. At this time, the connecting member 3 is restricted and cannot slide in the storage cavity 20.

[0098] The two symmetrically arranged limiting rods 233 improve the connection stability between the limiting rods 233 and the connecting piece 3. The two limiting rods 233 are simultaneously driven to slide by the transmission block 510. The center of the transmission block 510 is the same as the center of symmetry of the two limiting rods 233, so that no matter where the transmission block 510 rotates, the distance between the center of the transmission block 510 and the two arc-shaped contact surfaces 2331 is the same, thereby realizing the simultaneous driving of the two limiting rods 233 by a single transmission block 510. It should also be noted that the difference between the maximum diameter D1 and the minimum diameter D2 of the transmission block 510 is greater than the sliding stroke of the limiting block 2330 within the second limiting groove 334. This ensures that when the transmission block 510 is at both ends of its maximum diameter D1 facing the limiting rod 233, the limiting block 2330 can disengage from the second limiting groove 334. The working process of the control component 5 is as follows: When the operation button 30 is in the first end 241 position, the transmission block 510 is at both ends of its minimum diameter D2 facing the limiting rod 233. At this time, the elastic force of the elastic reset component 234 causes the limiting block 2330 to tend to move towards the center of symmetry. When the second limiting groove 334 on the connecting component 3... When the slide reaches the position of the limiting block 2330, the limiting block 2330 is directly engaged in the second limiting slot 334 by the action of the elastic reset member 234, thereby restricting the sliding of the connecting member 3. At this time, the blade 1 remains in the working state. When it is necessary to continue pushing the operation button 30 and rotating the knob 500, the transmission block 510 rotates until its two ends with the maximum diameter D1 face the limiting rod 233, thereby causing the limiting block 2330 to disengage from the second limiting slot 334. The smooth arc surface of the peripheral wall of the transmission block 510 and the contact method of the arc-shaped contact surface 2331 can effectively reduce the friction between the parts and improve the service life of the limiting rod 233 and the control member 5.

[0099] In this embodiment, the elastic reset member 234 is a symmetrical U-shaped elastic rod 2340, and two limiting rods 233 are respectively connected to the two ends of the U-shaped elastic rod 2340; as Figure 37 , Figure 40 , Figure 41 and Figure 42 As shown, the limiting rod 233 is provided with an assembly hole for fixing the U-shaped elastic rod 2340. A U-shaped groove 27 for placing the U-shaped elastic rod 2340 is provided on the inner side of the housing 2. The U-shaped groove 27 is connected to the sliding groove 26. In addition, the depth of the U-shaped elastic rod 2340 is greater than half of the maximum diameter D1 of the transmission block 510, so as to avoid the U-shaped elastic rod 2340 interfering with the rotation of the transmission block 510. The U-shaped elastic rod 2340 has a symmetrical structure, and its own elasticity allows the two limiting rods 233 to come closer to each other. The U-shaped elastic rod 2340 is located at the arc-shaped contact surface 2331 of the two limiting rods 233, which can reduce the lateral size occupied by the limiting rods 233 and the U-shaped elastic rod 2340 in the storage cavity 20, and avoid the housing 2 from being too wide, which would be not conducive to the user holding the shovel.

[0100] In this embodiment, to improve the connection stability between the control member 5 and the first limiting part 23 and to prevent the transmission block 510 from rotating arbitrarily, the control member 5 also includes a guide protrusion 52, such as... Figure 39 As shown, the guide protrusion 52 is fixed on the transmission block 510, and the guide protrusion 52 extends along the axial direction of the transmission block 510. The inner side of the housing 2 is provided with an arc-shaped guide groove 25 that mates with the guide protrusion 52. Figure 41 As shown, when the guide protrusion 52 is placed at one end of the arc-shaped guide groove 25, the transmission block 510 is positioned with its two ends of the maximum diameter D1 facing the limiting rod 233; as Figure 40 As shown, when the guide protrusion 52 is placed at the other end of the arc-shaped guide groove 25, the transmission block 510 is positioned with both ends of the minimum diameter D2 facing the limit rod 233, that is, the central angle of the arc-shaped guide groove 25 is 90 degrees, so that the transmission block 510 can only rotate 90 degrees, thereby improving the accuracy of the user's rotation of the knob 500 and ensuring that each rotation can accurately control the limit block 2330 to disengage from the second limit slot 334 or the limit block 2330 to engage with the second limit slot 334.

[0101] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A shovel, characterized in that, include: Blade (1); The housing (2) has a storage cavity (20) inside, and an opening (200) is provided on one side of the storage cavity (20); the housing (2) also has a first limiting part (23); The connector (3) is slidably installed in the storage cavity (20); the connector (3) includes an external part (32) for mounting the blade and a second limiting part (33) that cooperates with the first limiting part (23); When the connector (3) slides from the first position to the second position, the second limiting part (33) cooperates with the first limiting part (23) to prevent the connector (3) from continuing to slide towards the opening (200). At this time, the blade (1) extends out of the storage cavity (20) through the opening (200) and the shovel is in working condition. When a force perpendicular to the sliding direction is applied to at least one of the second limiting part (33) and the first limiting part (23), the second limiting part (33) can be disengaged from the first limiting part (23) to release the connector (3). When the connector (3) slides to the third position, the blade (1) is in a replaceable state.

2. The shovel according to claim 1, characterized in that, The second limiting part (33) is elastic. Applying a force to the second limiting part (33) can disengage the second limiting part (33) from the first limiting part (23).

3. The shovel according to claim 1, characterized in that, The first limiting part (23) is elastic. Applying a force to the first limiting part (23) can disengage the second limiting part (33) from the first limiting part (23).

4. The shovel according to claim 2, characterized in that... The connector (3) includes a main body (31), the external part (32) is formed at one end of the main body (31), and the second limiting part (33) includes a fixed end (330) connected to the main body (31) and a limiting end (331). The limiting end (331) is inclined relative to the main body (31) and extends toward the opening (200). When the connector (3) slides to the second position, the limiting end (331) abuts against the first limiting part (23).

5. The shovel according to claim 4, characterized in that, It also includes an auxiliary button (4), which is movably connected to the housing (2). When the connector (3) slides to the second position, the auxiliary button (4) corresponds to the limiting end (331). Pressing the auxiliary button (4) can push the limiting end (331) to disengage from the first limiting part (23).

6. The shovel according to claim 5, characterized in that, The second limiting part (33) includes an outer surface (3300) extending from the fixed end (330) to the limiting end (331); the auxiliary button (4) is provided with an inclined clearance surface (40), and when the connector (3) slides to the second position, the clearance surface (40) is in contact with the outer surface (3300).

7. The shovel according to claim 5, characterized in that, The auxiliary button (4) includes an active button (42) that is independently mounted on the housing (2).

8. The shovel according to claim 5, characterized in that, The auxiliary button (4) includes an elastic pressing piece (41) integrally formed with the housing (2).

9. The shovel according to claim 2, characterized in that, The connector (3) includes a main body (31), and the external part (32) is formed at one end of the main body (31). The second limiting part (33) includes a limiting button (332) and an elastic part (34) connected to the limiting button (332). The limiting button (332) is connected to the main body (31). When the connector (3) slides to the second position, under the elastic force of the elastic part (34), the limiting button (332) abuts against the first limiting part (23). Pressing the limiting button (332) can compress the elastic part (34) and the limiting button (332) disengages from the abutment with the first limiting part (23).

10. The shovel according to claim 9, characterized in that, The elastic part (34) includes two symmetrically arranged elastic legs (340). One end of the two elastic legs (340) is close to each other and connected to the limit button (332). The other end of the two elastic legs (340) is far away from each other and abuts against the inner side of the housing (2).

11. The shovel according to claim 10, characterized in that, The main body (31) is provided with a mounting hole (310), the limit button (332) is installed in the mounting hole (310), and the limit button (332) can slide along the axial direction of the mounting hole (310).

12. The shovel according to claim 10, characterized in that, The limit button (332) is formed at one end of the main body (31) away from the outer part (32). It is connected to the housing (2) through the outer part (32) and the elastic support (340), so that the main body (31) and the inner side of the housing (2) form a clearance space (201). Pressing the limit button (332) can make it swing toward the clearance space (201).

13. The shovel according to claim 12, characterized in that, The housing (2) is provided with a guide hole (24), which extends along the sliding direction of the connector (3); under the elastic force of the elastic support (340), the limit button (332) is at least partially placed in the guide hole (24), and the first limit part (23) is provided on the guide hole (24).

14. The shovel according to claim 13, characterized in that... The first limiting part (23) includes a limiting hole (232), which is opened on the guide hole (24), and the inner diameter of the limiting hole (232) is greater than the width of the guide hole (24); the limiting button (332) is provided with a limiting platform (3320) that can engage with the limiting hole (232); when the connecting member (3) slides to the second position, the limiting platform (3320) engages with the limiting hole (232); pressing the limiting button (332) can disengage the limiting platform (3320) from the limiting hole (232).

15. The shovel according to claim 14, characterized in that, The guide hole (24) is also provided with an initial locking hole (240) that can be engaged with the limiting platform (3320); when the connector (3) slides to the first position, the limiting platform (3320) engages with the initial locking hole (240), the blade (1) is completely housed in the storage cavity (20), and the shovel is in the storage state.

16. The shovel according to claim 14, characterized in that, The limit button (332) is also provided with a guide post (3321) coaxially connected to the limit platform (3320). The guide post (3321) is at least partially exposed outside the housing (2). The outer diameter of the guide post (3321) is smaller than the width of the guide hole (24). When the limit platform (3320) disengages from the limit card hole (232), the guide post (3321) can slide along the length direction of the guide hole (24).

17. The shovel according to claim 2, characterized in that, The first limiting part (23) includes a limiting wall (231); the limiting wall (231) is disposed on the inner side of the housing (2); when the connector (3) is in the second position, the second limiting part (33) abuts against the limiting wall (231) to restrict the connector (3) from sliding in the direction of the opening (200).

18. The shovel according to claim 2, characterized in that, The housing (2) is provided with a guide hole (24), which extends along the sliding direction of the connector (3); the first limiting part (23) includes a limiting wall (231), which is disposed on the inner wall of the guide hole (24) near the opening (200); The second limiting part (33) is at least partially placed inside the guide hole (24); when the connector (3) is in the second position, the second limiting part (33) abuts against the limiting wall (231) to restrict the connector (3) from sliding in the direction of the opening (200).

19. The shovel according to claim 3, characterized in that, The second limiting part (33) includes a second limiting slot (334) formed on the main body (31); the first limiting part (23) includes at least one limiting rod (233) and an elastic reset member (234) connected to the limiting rod (233), at least one of the limiting rods (233) is slidably installed in the receiving cavity (20); the sliding direction of the limiting rod (233) is perpendicular to the sliding direction of the connecting member (3); The limiting rod (233) is provided with a limiting block (2330) that can be engaged with the second limiting slot (334); The shovel also includes a control component (5); the control component (5) is movably mounted on the housing (2), and the control component (5) is driven to connect with the limiting rod (233); the limiting rod (233) can be slid by the control component (5); when the connecting member (3) is in the second position, under the elastic force of the elastic reset component (234), the limiting block (2330) engages with the second limiting slot (334) to restrict the sliding of the connecting member (3); by manipulating the control component (5), the limiting rod (233) can be slid to disengage the limiting block (2330) from the engagement with the second limiting slot (334).

20. The shovel according to claim 19, characterized in that, Two limit rods (233) are symmetrically arranged, and each of the two limit rods (233) has an arc-shaped contact surface (2331) at one end that is close to each other; the control component (5) includes a knob (500) rotatably mounted on the housing (2) and a transmission block (510) coaxially connected to the knob (500); The peripheral wall of the transmission block (510) simultaneously abuts against two arc-shaped contact surfaces (2331). The transmission block (510) has a maximum diameter (D1) and a minimum diameter (D2). By rotating the knob (500), the transmission block (510) can be positioned with its two ends of the maximum diameter (D1) facing the limiting rod (233) or its two ends of the minimum diameter (D2) facing the limiting rod (233). When the transmission block (510) is at both ends of the maximum diameter (D1) facing the limiting rod (233), the limiting rod (233) overcomes the elastic force of the elastic reset member (234), causing the limiting block (2330) to disengage from the second limiting slot (334) to release the connecting member (3); When the minimum diameter (D2) of the transmission block (510) is facing the limiting rod (233), the two limiting rods (233) move closer to each other under the action of the elastic reset member (234), so that the limiting block (2330) can be inserted into the second limiting slot (334) to restrict the sliding of the connecting member (3).

21. The shovel according to claim 20, characterized in that, The elastic reset member (234) includes a symmetrical U-shaped elastic rod (2340), and the two ends of the U-shaped elastic rod (2340) are respectively connected to two limiting rods (233).

22. The shovel according to claim 20, characterized in that, The control component (5) also includes a guide protrusion (52) that extends axially along the transmission block (510). The inner side of the housing (2) is provided with an arc-shaped guide groove (25) that cooperates with the guide protrusion (52). When the guide protrusion (52) is placed at one end of the arc-shaped guide groove (25), the transmission block (510) is positioned with both ends of the maximum diameter (D1) facing the limiting rod (233). When the guide protrusion (52) is placed at the other end of the arc-shaped guide groove (25), the transmission block (510) is positioned with both ends of the minimum diameter (D2) facing the limiting rod (233).

23. The shovel according to claim 2, characterized in that, The connector (3) further includes an operation button (30), a main body (31), and an elastic part (34) connected to the operation button (30). The main body (31) is connected to the external part (32) and the operation button (30). The operation button (30) includes at least one limiting protrusion (300). The inner side of the housing (2) is provided with at least two first limiting slots (28) that engage with the limiting protrusions (300). The at least two first limiting slots (28) are distributed at intervals along the sliding direction of the connector (3). When the connector (3) is in the first position, the limiting protrusion (300) engages with the first limiting slot (28) away from the opening (200); When the connector (3) is in the second position, the limiting protrusion (300) engages with the first limiting slot (28) near the opening (200); Pressing the operation button (30) can disengage the limiting protrusion (300) from the first limiting slot (28).

24. The shovel according to claim 23, characterized in that, The elastic part (34) includes a connecting end (341) and a movable end (342) that are connected to each other; the connecting end (341) is connected to the main body (31); the movable end (342) is used to connect the operation button (30); A narrow elastic space (343) is formed between the elastic part (34) and the main body (31); the movable end (342) can swing toward the elastic space (343).

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