Locking assembly and surveying hammer

Abstract

The invention provides a locking assembly and a surveying hammer, and the locking assembly comprises an inserting part, a locking part, a locking part, a locking part and a locking part, and the head end of the inserting part is provided with an avoiding part; the first limiting structure is movably arranged in the avoiding part, the first limiting structure has an avoiding state and a limiting state, and when the first limiting structure is in the avoiding state, the first limiting structure is located in the avoiding part; when the first limiting structure is in the limiting state, at least part of the first limiting structure protrudes out of the circumferential surface of the inserting part outwards in the radial direction of the inserting part; the second limiting structure is arranged at the tail end of the inserting part, and when the first limiting structure is in the limiting state, the first limiting structure and the second limiting structure are oppositely arranged in a spaced mode in the direction from the head end to the tail end of the inserting part. The locking assembly is applied between the hammer handle part and the hammer head part of the surveying hammer, and the problem that in the prior art, due to the fact that the hammer head part and the hammer handle part are connected in a threaded fit mode, the hammer head part is likely to loosen after being used for a long time can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of surveying hammers, and in particular to a locking assembly and a surveying hammer. Background Art

[0002] Geological exploration can be broadly understood as geological work. It is based on the needs of economic construction, national defense construction and scientific and technological development, using geological exploration methods such as surveying and mapping, geophysical exploration, geochemical prospecting, drilling, pit exploration, sampling testing, geological remote sensing, etc., to investigate and study the geological conditions such as rocks, stratigraphic structures, minerals, groundwater, and landforms in a certain area. Before excavating a mine, it is necessary to detect the geology. Generally, there are many ways to detect it, the most common of which is to use a hammer and pick to excavate the mine for testing.

[0003] For easy carrying, the existing surveying hammer usually includes a hammer handle component and a hammer head component which are separately arranged, and the hammer handle component and the hammer head component are connected by threaded matching. However, after long-term use, the hammer head component may become loose when the hammer head component and the hammer handle component are connected by threaded matching, which affects the smoothness of the surveying process. Summary of the invention

[0004] The invention provides a locking assembly and a surveying hammer to solve the problem that the hammer head component may become loose after long-term use in the prior art connection mode between the hammer head component and the hammer handle component through threaded matching.

[0005] According to one aspect of the present invention, a locking assembly is provided, which includes: a plug-in portion, having a head end and a tail end relatively arranged, the head end of the plug-in portion having a avoidance portion; a first limiting structure, movably arranged in the avoidance portion, the first limiting structure having a relatively arranged avoidance state and a limiting state, when the first limiting structure is in the avoidance state, the first limiting structure is located in the avoidance portion; when the first limiting structure is in the limiting state, at least a portion of the first limiting structure protrudes radially outward from the circumference of the plug-in portion along the radial direction of the plug-in portion; a second limiting structure, arranged at the tail end of the plug-in portion, when the first limiting structure is in the limiting state, the first limiting structure and the second limiting structure are relatively spaced apart along the direction from the head end to the tail end of the plug-in portion.

[0006] Furthermore, a hinge shaft is arranged in the avoidance part, and the first limiting structure includes a limiting block, which is hinged to the hinge shaft, and the limiting block has a limiting surface. When the first limiting structure is in the avoidance state, the limiting surface is located in the avoidance part; when the first limiting structure is in the limiting state, the limiting surface is located on the outside of the avoidance part, and the limiting surface faces the tail end of the plug-in part.

[0007] Furthermore, the avoidance portion includes an avoidance groove, and the avoidance groove is arranged on the side wall of the head end of the plug-in portion.

[0008] Furthermore, a movable hole is provided on the plug-in part, one end of the movable hole is connected to the avoidance groove, and the other end extends to the surface of the head end or the tail end of the plug-in part. The locking assembly also includes: a trigger part, which is movably arranged in the movable hole, and the trigger part has a first position and a second position. When the trigger part is in the first position, the trigger part is separated from the limit block, and the limit block is in an avoidance state; when the trigger part is in the second position, the trigger part abuts against the limit block and the limit block is in a limit state; a locking structure is provided between the plug-in part and the trigger part, and when the trigger part is in the second position, the locking structure locks the trigger part to make the trigger part in the second position.

[0009] Furthermore, the movable hole extends from the head end to the tail end of the plug-in part, and one end of the movable hole away from the avoidance groove extends to the end surface of the tail end of the plug-in part, and the trigger part is movably arranged in the movable hole along the extension direction of the movable hole.

[0010] Furthermore, a sliding groove is provided on the outer side wall of the plug-in part, and the sliding groove is connected to the movable hole. The locking structure includes: a locking piece, which is movably arranged in the sliding groove, and one end of the locking piece is used to be embedded in or out of the movable hole; an elastic piece, which is arranged between the plug-in part and the locking piece, and the elastic piece applies a force to the locking piece to slide along the sliding groove into the movable hole, so that one end of the locking piece is embedded in the movable hole; wherein, the locking piece has a first stop surface, and the trigger part has a second stop surface, and when the trigger part is in the second position, the first stop surface of the locking piece is located in the movable hole, and the first stop surface is located on the side of the second stop surface close to the tail end of the trigger part, and the first stop surface and the second stop surface are matched with each other.

[0011] Furthermore, an end surface of the trigger portion facing the rear end of the plug-in portion is a second stop surface. When the trigger portion is in the second position, the trigger portion is located in the movable hole.

[0012] Furthermore, the plug-in portion includes a first section and a second section connected to each other along the head end to the tail end, the outer diameter of the first section is smaller than the outer diameter of the second section, a step surface is formed between the first section and the second section, and the step surface forms a second limiting structure.

[0013] According to another aspect of the present invention, a surveying hammer is provided, which includes: a hammer handle component, having a gripping end and a connecting end arranged oppositely; a hammer head component, which is plug-connected with the connecting end of the hammer handle component; a first connecting portion, which is arranged on the end surface of the connecting end of the hammer handle component, and the projection of the first connecting portion along the direction from the first connecting portion to the hammer handle component is a C-shaped structure, the first connecting portion includes a first side wall, a second side wall and a third side wall connected in sequence, and the first side wall and the third side wall are located on the same side of the second side wall; a second connecting portion, which is arranged on the side of the hammer head component, and the second connecting portion is plug-matched with the first connecting portion; the above-mentioned locking assembly, when the first limiting structure is in the avoidance state, the plug-in portion of the locking assembly passes through the first connecting portion and the second connecting portion along the direction of the first side wall and the third side wall, so that the head end of the plug-in portion is located on one side of the third side wall, and the tail end of the plug-in portion is located on one side of the first side wall; when the first limiting structure is in the limiting state, the first limiting structure is limitedly matched with the third side wall, and the second limiting structure is limitedly matched with the first side wall.

[0014] Furthermore, a rotation-stopping structure is provided between the plug-in portion and the first connecting portion; and / or a rotation-stopping structure is provided between the plug-in portion and the second connecting portion.

[0015] By applying the technical solution of the present invention, the locking assembly of the solution is applied to a surveying hammer, so that the hammer head component and the hammer handle component of the surveying hammer are connected through the locking assembly, which can reduce the possibility of the hammer head component and the hammer handle component becoming loose after long-term use. Specifically, the surveying hammer can be configured as a hammer handle component and a hammer head component that are plugged into and matched with each other, the hammer handle component is provided with a first connecting portion, and the hammer head component is provided with a second connecting portion. When the hammer head component is inserted into the hammer handle component, at least parts of the first connecting portion and the second connecting portion abut against each other. The locking assembly locks the first connecting portion and the second connecting portion to achieve the fixation of the hammer head component and the hammer handle component.

[0016] When the locking assembly connects the first connection part and the second connection part, first ensure that the first limiting structure is in a limiting state, and the operator passes the plug-in part through the pre-set plug-in channel between the first connection part and the second connection part, so that the head end and the tail end of the plug-in part are respectively located on the first side and the second side of the whole formed by the first connection part and the second connection part; the second limiting structure abuts against the surface of the second side, and the state of the first limiting structure is adjusted so that the first limiting structure is in a limiting state and abuts against the surface of the first side; the above arrangement makes at least part of the whole formed by the first connection part and the second connection part limited between the first limiting structure and the second limiting structure, preventing the first connection part and the second connection part from moving relative to each other in the direction from the head end to the tail end of the plug-in part, so as to achieve the fixation of the hammer head component and the hammer handle component. Similarly, when disassembly is required, the first limiting structure is returned to the avoidance state, and the plug-in part can be pulled out.

[0017] The first connecting portion on the hammer handle component and the second connecting portion on the hammer head component are connected by the locking assembly of the present invention. After long-term use, the first connecting portion and the second connecting portion will not loosen, thereby reducing or avoiding the possibility of loosening of the hammer head component and the hammer handle component, and improving the reliability of the surveying hammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of the survey hammer provided by the present invention is shown;

[0020] Figure 2 A first partial structural schematic diagram of the surveying hammer provided by the present invention is shown;

[0021] Figure 3 A second partial structural schematic diagram of the surveying hammer provided by the present invention is shown;

[0022] Figure 4 A schematic structural diagram of a locking assembly provided by the present invention is shown;

[0023] Figure 5 A schematic structural diagram of a first connecting portion provided by the present invention is shown;

[0024] Figure 6 A cross-sectional view showing the matching of the plug-in portion, the first connecting portion and the second connecting portion provided by the present invention;

[0025] Figure 7 A cross-sectional view showing the cooperation of the plug-in portion, the first connecting portion, the second connecting portion and the triggering portion provided by the present invention is shown;

[0026] Figure 8 A schematic diagram of a trigger unit provided by the present invention is shown.

[0027] The above drawings include the following reference numerals:

[0028] 10. Connecting part; 1001. Head end; 1002. Tail end;

[0029] 11. The first paragraph; 12. The second paragraph;

[0030] 101. avoidance portion; 1011. articulated axis;

[0031] 102. Activity hole;

[0032] 103, sliding groove;

[0033] 21. First limiting structure; 22. Second limiting structure;

[0034] 30. Trigger unit;

[0035] 40. Locking structure; 41. Locking member; 42. Elastic member;

[0036] 51. Hammer handle component; 52. Hammer head component;

[0037] 61. a first connecting portion;

[0038] 611, first side wall; 6111, first plug hole;

[0039] 612, second side wall;

[0040] 613, third side wall; 6131, second plug hole;

[0041] 62, second connection portion; 6201, third plug hole;

[0042] 70. Anti-rotation structure; 71. Anti-rotation strip; 72. Anti-rotation through groove. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0044] like Figures 1 to 8 As shown, an embodiment of the present invention provides a locking assembly, which includes an inserting portion 10 , a first limiting structure 21 and a second limiting structure 22 . Among them, the plug-in part 10 has a head end 1001 and a tail end 1002 which are relatively arranged, and the head end 1001 of the plug-in part 10 has an avoidance part 101; the first limiting structure 21 is movably arranged in the avoidance part 101, and the first limiting structure 21 has a relatively arranged avoidance state and a limiting state. When the first limiting structure 21 is in the avoidance state, the first limiting structure 21 is located in the avoidance part 101; when the first limiting structure 21 is in the limiting state, at least a part of the first limiting structure 21 protrudes outwardly from the circumference of the plug-in part 10 along the radial direction of the plug-in part 10; the second limiting structure 22 is arranged at the tail end 1002 of the plug-in part 10, and when the first limiting structure 21 is in the limiting state, the first limiting structure 21 and the second limiting structure 22 are relatively spaced apart in the direction from the head end 1001 to the tail end 1002 of the plug-in part 10.

[0045] By applying the technical solution of the present invention, the locking assembly of the present solution is applied to a surveying hammer, so that the hammer head component 52 and the hammer handle component 51 of the surveying hammer are connected through the locking assembly, which can reduce the possibility of the hammer head component 52 and the hammer handle component 51 becoming loose after long-term use. Specifically, the surveying hammer can be configured as a hammer handle component 51 and a hammer head component 52 that are plugged into each other, the hammer handle component 51 is provided with a first connecting portion 61, and the hammer head component 52 is provided with a second connecting portion 62. When the hammer head component 52 is inserted into the hammer handle component 51, at least parts of the first connecting portion 61 and the second connecting portion 62 abut against each other. The locking assembly locks the first connecting portion 61 and the second connecting portion 62, thereby fixing the hammer head component 52 and the hammer handle component 51.

[0046] When the locking assembly connects the first connection part 61 and the second connection part 62, firstly, it is ensured that the first limiting structure 21 is in a limiting state, and the operator passes the plug-in part 10 through the pre-set plug-in channel between the first connection part 61 and the second connection part 62, so that the head end 1001 and the tail end 1002 of the plug-in part 10 are respectively located on the first side and the second side of the whole formed by the first connection part 61 and the second connection part 62; the second limiting structure 22 abuts against the surface of the second side, and the state of the first limiting structure 21 is adjusted, so that the first limiting structure 21 is in a limiting state and abuts against the surface of the first side; the above-mentioned arrangement makes at least part of the whole formed by the first connection part 61 and the second connection part 62 limited between the first limiting structure 21 and the second limiting structure 22, preventing the first connection part 61 and the second connection part 62 from moving relative to each other in the direction from the head end 1001 to the tail end 1002 of the plug-in part 10, so as to achieve the fixation of the hammer head component 52 and the hammer handle component 51. Similarly, when disassembly is required, the first limiting structure 21 is returned to the avoidance state and the plug-in portion 10 is pulled out.

[0047] The first connecting portion 61 on the hammer handle component 51 and the second connecting portion 62 on the hammer head component 52 are connected by the locking assembly of the present invention. After long-term use, the first connecting portion 61 and the second connecting portion 62 will not loosen, thereby reducing or avoiding the possibility of loosening of the hammer head component 52 and the hammer handle component 51, thereby improving the reliability of the surveying hammer.

[0048] like Figure 4 and Figure 7As shown, further, a hinge shaft 1011 is provided in the avoidance portion 101, and the first limiting structure 21 includes a limiting block, which is hinged to the hinge shaft 1011, and the limiting block has a limiting surface. When the first limiting structure 21 is in the avoidance state, the limiting surface is located in the avoidance portion 101; when the first limiting structure 21 is in the limiting state, the limiting surface is located outside the avoidance portion 101, and the limiting surface faces the rear end 1002 of the plug-in portion 10. The hinged design of the limiting block and the hinge shaft 1011 enables the limiting block to rotate around the hinge shaft 1011, thereby flexibly switching between the avoidance state and the limiting state. When in the avoidance state, the entirety of the limit block is received in the avoidance portion 101, which means that the limit surface is received in the avoidance portion 101 and does not affect the normal insertion or removal operation of the plug-in portion 10; and when a limit fit is required, the limit surface of the limit block can be rotated to the outside of the avoidance portion 101 and toward the tail end 1002 of the plug-in portion 10, forming an effective radial limit to ensure the stability of the plug-in portion 10 at the connection position.

[0049] Specifically, the avoidance portion 101 includes an avoidance groove, which is arranged on the side wall of the head end 1001 of the plug-in portion 10. The design of the avoidance groove allows the first limiting structure 21 to be completely hidden inside the plug-in portion 10 in the avoidance state, avoiding obstacles that may be encountered during assembly and disassembly due to the outward protrusion of the first limiting structure 21. The operator can easily insert or remove the plug-in portion 10 without additional adjustment or alignment, which greatly improves the operating efficiency and convenience. The design of the avoidance groove reduces the radial dimension of the locking assembly at the head end 1001 of the plug-in portion 10, making the entire assembly more compact.

[0050] Furthermore, the plug-in part 10 is also provided with a movable hole 102, one end of which is connected to the avoidance groove, and the other end of which extends to the surface of the head end 1001 or the tail end 1002 of the plug-in part 10, and the locking assembly further includes a trigger part 30 and a locking structure 40. The trigger part 30 is movably arranged in the movable hole 102, and the trigger part 30 has a first position and a second position. When the trigger part 30 is in the first position, the trigger part 30 is separated from the limit block, and the limit block is in an avoidance state; when the trigger part 30 is in the second position, the trigger part 30 is in contact with the limit block and the limit block is in a limit state; the locking structure 40 is arranged between the plug-in part 10 and the trigger part 30, and when the trigger part 30 is in the second position, the locking structure 40 locks the trigger part 30 so that the trigger part 30 is in the second position. The setting of the trigger part 30 can drive the limit block to switch from the avoidance state to the limit state, and when the limit block is in the limit state, the locking structure 40 enables the trigger part 30 to maintain the relative position with the limit block unchanged, so that the limit block is in the limit state.

[0051] Specifically, the arrangement of the locking structure 40, especially the cooperation with the trigger part 30, can provide additional locking protection when the trigger part 30 is in the second position, that is, when the first limiting structure 21 is in the limiting state. This means that once the locking structure 40 is activated, the trigger part 30 will be fixed in the second position, and the limiting state of the first limiting structure 21 will be firmly locked and will not be accidentally changed due to external factors such as vibration or external force, thereby enhancing the stability and reliability of the locking assembly.

[0052] Furthermore, the movable hole 102 and the trigger portion 30 are integrated into the interior of the plug-in portion 10 , so that the outer contour of the locking assembly is more concise and the exposure of external parts is reduced.

[0053] In the embodiment of the present scheme, a plurality of avoidance grooves are provided, and the plurality of avoidance grooves are spaced apart along the circumference of the plug-in portion 10. A limit block is correspondingly provided in each avoidance groove, and the trigger portion 30 drives the plurality of limit blocks to synchronously switch from the avoidance state to the limit state. The provision of the plurality of limit blocks can provide support and limit effects at multiple positions along the circumference of the plug-in portion 10, further improving the stability of the limit of the first limit structure 21. In addition, the trigger portion 30 drives the plurality of limit blocks to synchronously switch from the avoidance state to the limit state, thereby simplifying the operation process and avoiding the tedious operation of adjusting the limit blocks one by one. The operator only needs one operation to realize the state conversion of all limit blocks, thereby improving the convenience and efficiency of the operation of the locking assembly.

[0054] Specifically, the movable hole 102 extends from the head end 1001 to the tail end 1002 of the plug-in part 10, and the end of the movable hole 102 away from the avoidance groove extends to the end surface of the tail end 1002 of the plug-in part 10, and the trigger part 30 is movably arranged in the movable hole 102 along the extension direction of the movable hole 102.

[0055] like Figure 4 , Figure 7 and Figure 8As shown, specifically, the plug-in portion 10 is a cylindrical tube structure, the movable hole 102 is coaxially arranged with the plug-in portion 10, the head end 1001 of the plug-in portion 10 is a blocking end, and the tail end 1002 of the plug-in portion 10 is an open end. The trigger portion 30 is a cylindrical structure, and one end of the trigger portion 30 is used to be inserted into the movable hole 102 from the opening of the movable hole 102, so that the trigger portion 30 moves relative to the plug-in portion 10. The circumferential surface of the trigger portion 30 is used to synchronously contact with a plurality of limit blocks, so that the plurality of limit blocks synchronously rotate around the corresponding hinge shaft 1011. When the trigger part 30 is in the second position, the end of the trigger part 30 close to the head end 1001 of the plug-in part 10 is used to abut against the bottom of the movable hole 102. When the end of the trigger part 30 close to the head end 1001 of the plug-in part 10 abuts against the bottom of the movable hole 102, the trigger part 30 is in the second position. At this time, the position of the trigger part 30 can be locked by the locking structure 40.

[0056] In the embodiment of the present scheme, the avoidance groove has a first end and a second end which are arranged relatively along the direction from the head end 1001 to the tail end 1002 of the plug-in part 10, and the hinge shaft 1011 is arranged at the second end of the avoidance groove, and the extension direction of the hinge shaft 1011 is perpendicular to the radial direction of the plug-in part 10. The limit block has a first edge, a second edge and a third edge which are distributed along the circumferential interval, the first edge, the second edge and the third edge are parallel to each other, the first edge is parallel to the first hinge shaft 1011, and the first edge is hinged to the first hinge shaft 1011. The side surface of the limit block located between the first edge and the second edge and the side surface located between the first edge and the third edge are perpendicular to each other, and the side surface between the first edge and the third edge forms a limit surface. When the head end 1001 of the plug-in part 10 is facing downward and no force acts on the limit block, the second edge is located in the movable hole 102, and the third edge is located outside the avoidance groove.

[0057] During specific use, the operator can apply a force to the limit block so that the limit block is entirely embedded in the avoidance groove, so that the plug-in portion 10 passes through the first connection portion 61 and the second connection portion 62 . After the plug-in portion 10 passes through the first connecting portion 61 and the second connecting portion 62, the avoidance groove is exposed on the outside of the whole formed by the first connecting portion 61 and the second connecting portion 62; so that the head end 1001 of the plug-in portion 10 faces downward, and under the action of gravity, the second edge of the limit block is located in the movable hole 102, and the third edge of the limit block is located on the outside of the avoidance groove; thereafter, the trigger portion 30 is inserted into the movable hole 102, and in the process of the trigger portion 30 moving toward the bottom of the movable hole 102, the circumferential surface of the trigger portion 30 abuts against the surface between the first edge and the second edge of the plurality of limit blocks, so that the plurality of limit blocks rotate synchronously until one end of the trigger portion 30 abuts against the bottom of the movable hole 102; the surface between the first edge and the second edge of the limit block is in a vertical state and is always abutted against the circumferential surface of the trigger portion 30, and the limiting surface between the first edge and the third edge of the limit block extends along the radial direction of the plug-in portion 10, and the limiting surface is arranged opposite to the second limiting structure 22.

[0058] In the embodiment of this scheme, a sliding groove 103 is provided on the outer wall of the plug-in portion 10 , and the sliding groove 103 extends radially along the plug-in portion 10 . The sliding groove 103 is connected to the movable hole 102 , and the locking structure 40 includes a locking member 41 and an elastic member 42 . The locking member 41 is movably arranged in the sliding groove 103, and one end of the locking member 41 is used to be embedded in or out of the movable hole 102; the elastic member 42 is arranged between the plug-in portion 10 and the locking member 41, and the elastic member 42 applies a force to the locking member 41 to slide along the sliding groove 103 into the movable hole 102, so that one end of the locking member 41 is embedded in the movable hole 102; wherein, the locking member 41 has a first stop surface, and the trigger portion 30 has a second stop surface. When the trigger portion 30 is in the second position, the first stop surface of the locking member 41 is located in the movable hole 102, and the first stop surface is located on the side of the second stop surface close to the tail end 1002 of the trigger portion 30, and the first stop surface and the second stop surface are stop-matched. When the trigger part 30 needs to be inserted into the plug part 10, the locking member 41 is disengaged from the movable hole 102, so that the locking member 41 avoids the movement of the trigger part 30; when the trigger part 30 is in the second position, under the action of the elastic member 42, one end of the locking member 41 is embedded in the movable hole 102, and the second stop surface of the trigger part 30 and the first stop surface of the locking member 41 are abutted against each other, so as to prevent the trigger part 30 from moving from the head end 1001 of the plug part 10 to the tail end 1002. The above arrangement has a simple structure and is easy to operate.

[0059] Specifically, the end surface of the trigger portion 30 facing the rear end 1002 of the plug portion 10 is the second stop surface, and when the trigger portion 30 is in the second position, the trigger portion 30 is located in the movable hole 102. In this way, there is no need to process the second stop surface on the trigger portion 30.

[0060] In the embodiment of the present solution, both the first stop surface and the second stop surface are planes, and both the first stop surface and the second stop surface are perpendicular to the axial direction of the plug-in portion 10 .

[0061] Furthermore, the plug-in portion 10 includes a first section 11 and a second section 12 connected to each other along the head end 1001 to the tail end 1002, the outer diameter of the first section 11 is smaller than the outer diameter of the second section 12, a step surface is formed between the first section 11 and the second section 12, and the step surface forms a second limiting structure 22. Such a configuration facilitates the formation of the second limiting structure 22 and facilitates the processing of the plug-in portion 10.

[0062] like Figures 3 to 5 As shown, an embodiment of the present invention further provides a surveying hammer, which includes a hammer handle component 51, a hammer head component 52, a first connecting portion 61, a second connecting portion 62 and the above-mentioned locking assembly. The hammer handle component 51 has a gripping end and a connecting end that are arranged opposite to each other; the hammer head component 52 is plugged into the connecting end of the hammer handle component 51; the first connecting portion 61 is arranged on the end face of the connecting end of the hammer handle component 51, and along the direction from the first connecting portion 61 to the hammer handle component 51, the projection of the first connecting portion 61 is a C-shaped structure, and the first connecting portion 61 includes a first side wall 611, a second side wall 612 and a third side wall 613 that are connected in sequence, and the first side wall 611 and the third side wall 613 are located on the same side of the second side wall 612; the second connecting portion 62 is arranged on the side of the hammer head component 52, and the second connecting portion 62 is arranged on the side of the hammer head component 52. The second connection part 62 is plugged and matched with the first connection part 61; when the first limiting structure 21 is in the avoidance state, the plug-in part 10 of the locking assembly penetrates the first connection part 61 and the second connection part 62 along the direction of the first side wall 611 and the third side wall 613, so that the head end 1001 of the plug-in part 10 is located on one side of the third side wall 613, and the tail end 1002 of the plug-in part 10 is located on one side of the first side wall 611; when the first limiting structure 21 is in the limiting state, the first limiting structure 21 is limited and matched with the third side wall 613, and the second limiting structure 22 is limited and matched with the first side wall 611. In this way, the second connection part 62 is plugged and matched with the first connection part 61 along the insertion direction of the hammer handle component 51 and the hammer head component 52, which improves the stability of the connection between the first connection part 61 and the second connection part 62.

[0063] It can be understood that the direction from the first side wall 611 to the third side wall 613 is perpendicular to the insertion direction of the second connection part 62 and the first connection part 61. A plug-in channel is formed between the first connection part 61 and the second connection part 62, and the plug-in channel runs through the entire first connection part 61 and the second connection part 62 along the direction from the first side wall 611 to the third side wall 613.

[0064] Specifically, a first plugging hole 6111 is provided on the first side wall 611, a second plugging hole 6131 is provided on the third side wall 613, and a third plugging hole 6201 is provided on the second connecting portion 62. The first plugging hole 6111, the third plugging hole 6201 and the second plugging hole 6131 are coaxial and connected in sequence.

[0065] like Figures 4 to 6 As shown, further, a rotation-stopping structure 70 is provided between the plug-in portion 10 and the first connecting portion 61; and / or, a rotation-stopping structure 70 is provided between the plug-in portion 10 and the second connecting portion 62. The provision of the rotation-stopping structure 70 can prevent the plug-in portion 10 from rotating relative to the first connecting portion 61 and the second connecting portion 62 as a whole, further improving the stability of the connection between the locking assembly and the first connecting portion 61 and the second connecting portion 62.

[0066] In the embodiment of the present scheme, a stop bar 71 is provided on the outer wall of the plug-in portion 10, and the stop bar 71 extends along the axial direction of the plug-in portion 10; a first stop groove is provided on the hole wall of the first plug-in hole 6111, and the stop bar 71 cooperates with the first stop groove for anti-rotation; a second stop groove is provided on the hole wall of the second plug-in hole 6131, and the stop bar 71 cooperates with the second stop groove for anti-rotation; a third stop groove is provided on the hole wall of the third plug-in hole 6201, and the stop bar 71 cooperates with the third stop groove for anti-rotation. It can be understood that the first stop groove, the third stop groove and the second stop groove are sequentially connected to form a stop groove 72, and the stop bar 71 cooperates with the stop groove 72 to form a stop structure 70.

[0067] In the embodiment of this solution, a plurality of anti-rotation structures 70 are provided, and the plurality of anti-rotation structures 70 are distributed at intervals along the circumference of the plug-in portion 10. Such an arrangement can further improve the stability and smoothness of the plug-in assembly of the plug-in portion 10.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0070] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0071] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0072] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A locking assembly, characterized in that: The locking assembly comprises: The plug-in portion (10) has a head end (1001) and a tail end (1002) that are arranged opposite to each other, and the head end (1001) of the plug-in portion (10) has a relief portion (101); A first limiting structure (21) is movably arranged in the avoidance portion (101), the first limiting structure (21) having a avoidance state and a limiting state which are arranged relatively to each other, when the first limiting structure (21) is in the avoidance state, the first limiting structure (21) is located in the avoidance portion (101); when the first limiting structure (21) is in the limiting state, at least a portion of the first limiting structure (21) protrudes outwardly from the circumference of the plug-in portion (10) along the radial direction of the plug-in portion (10); The second limiting structure (22) is arranged at the rear end (1002) of the plug-in part (10); when the first limiting structure (21) is in the limiting state, the first limiting structure (21) and the second limiting structure (22) are arranged relatively spaced apart in a direction from the head end (1001) to the rear end (1002) of the plug-in part (10).

2. The locking assembly according to claim 1, characterized in that: The avoidance portion (101) is provided with a hinge shaft (1011), and the first limiting structure (21) comprises a limiting block, the limiting block is hinged to the hinge shaft (1011), and the limiting block has a limiting surface, when the first limiting structure (21) is in the avoidance state, the limiting surface is located in the avoidance portion (101); when the first limiting structure (21) is in the limiting state, the limiting surface is located on the outside of the avoidance portion (101), and the limiting surface faces the rear end (1002) of the plug-in portion (10).

3. The locking assembly according to claim 2, characterized in that: The avoidance portion (101) comprises an avoidance groove, and the avoidance groove is arranged on the side wall of the head end (1001) of the plug-in portion (10).

4. The locking assembly according to claim 3, characterized in that: The plug-in portion (10) is also provided with a movable hole (102), one end of the movable hole (102) is communicated with the avoidance groove, and the other end extends to the surface of the head end (1001) or the tail end (1002) of the plug-in portion (10), and the locking assembly further comprises: A trigger part (30) is movably arranged in the movable hole (102), and the trigger part (30) has a first position and a second position. When the trigger part (30) is in the first position, the trigger part (30) is separated from the limit block, and the limit block is in the avoidance state; when the trigger part (30) is in the second position, the trigger part (30) is in contact with the limit block, and the limit block is in the limit state. A locking structure (40) is arranged between the plug-in portion (10) and the trigger portion (30); when the trigger portion (30) is in the second position, the locking structure (40) locks the trigger portion (30) so that the trigger portion (30) is in the second position.

5. The locking assembly according to claim 4, characterized in that: The movable hole (102) extends in a direction from a head end (1001) to a tail end (1002) of the plug-in portion (10), and an end of the movable hole (102) away from the avoidance groove extends to an end surface of the tail end (1002) of the plug-in portion (10), and the trigger portion (30) is movably arranged in the movable hole (102) along an extension direction of the movable hole (102).

6. The locking assembly according to claim 5, characterized in that: The outer side wall of the plug-in portion (10) is provided with a sliding groove (103), the sliding groove (103) is communicated with the movable hole (102), and the locking structure (40) comprises: A locking member (41) is movably disposed in the sliding groove (103), and one end of the locking member (41) is used to be embedded in or removed from the movable hole (102); an elastic member (42) disposed between the plug-in portion (10) and the locking member (41), the elastic member (42) applying a force to the locking member (41) to slide along the sliding groove (103) into the movable hole (102), so that one end of the locking member (41) is embedded in the movable hole (102); The locking member (41) has a first stop surface, and the trigger portion (30) has a second stop surface. When the trigger portion (30) is in the second position, the first stop surface of the locking member (41) is located in the movable hole (102), and the first stop surface is located on a side of the second stop surface close to the tail end (1002) of the trigger portion (30), and the first stop surface and the second stop surface are stop-matched.

7. The locking assembly according to claim 6, characterized in that: The end surface of the trigger portion (30) facing the rear end (1002) of the plug-in portion (10) is the second stop surface. When the trigger portion (30) is in the second position, the trigger portion (30) is located in the movable hole (102).

8. The locking assembly according to claim 1, characterized in that: The plug-in portion (10) comprises a first section (11) and a second section (12) which are connected to each other along a head end (1001) to a tail end (1002); an outer diameter of the first section (11) is smaller than an outer diameter of the second section (12); a step surface is formed between the first section (11) and the second section (12); and the step surface forms the second limiting structure (22).

9. A surveying hammer, characterized in that: include: A hammer handle component (51) having a gripping end and a connecting end that are arranged opposite to each other; A hammer head component (52) is plugged into the connecting end of the hammer handle component (51); A first connecting portion (61) is arranged on the end surface of the connecting end of the hammer handle component (51); along the direction from the first connecting portion (61) to the hammer handle component (51), the projection of the first connecting portion (61) is a C-shaped structure; the first connecting portion (61) comprises a first side wall (611), a second side wall (612) and a third side wall (613) which are connected in sequence; the first side wall (611) and the third side wall (613) are located on the same side of the second side wall (612); A second connecting portion (62) is arranged on a side of the hammer head component (52), and the second connecting portion (62) is plug-fitted with the first connecting portion (61); The locking assembly described in any one of claims 1 to 8, when the first limiting structure (21) is in the avoidance state, the plug-in portion (10) of the locking assembly passes through the first connecting portion (61) and the second connecting portion (62) along the direction of the first side wall (611) and the third side wall (613), so that the head end (1001) of the plug-in portion (10) is located on one side of the third side wall (613), and the tail end (1002) of the plug-in portion (10) is located on one side of the first side wall (611); when the first limiting structure (21) is in the limiting state, the first limiting structure (21) is limitedly matched with the third side wall (613), and the second limiting structure (22) is limitedly matched with the first side wall (611).

10. The surveying hammer according to claim 9, characterized in that A rotation-stopping structure (70) is provided between the plug-in portion (10) and the first connecting portion (61); and / or a rotation-stopping structure (70) is provided between the plug-in portion (10) and the second connecting portion (62).

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