Depth adjustment device of trimming machine and trimming machine

Abstract

The present application relates to the field of tool technology, and discloses a depth adjustment device for a trimmer and a trimmer. The depth adjustment device for the trimmer includes a base, a rotating member, and a plurality of locking members. The base is provided with a receiving space that penetrates the base along a preset direction and allows the tool body to pass through. The rotating member is rotatably connected to the base, and the rotating member is provided with a plurality of guide structures, and the plurality of guide structures are arranged around the preset direction. The plurality of locking members correspond to the plurality of guide structures one by one, and each locking member is movably connected to the base, and each locking member is engaged with the corresponding guide structure, and the distance between the locking member and the rotation center of the rotating member can be changed with the rotation of the rotating member. The rotating member has a locking position and an unlocking position, and when the rotating member is in the locking position, the plurality of locking members are pressed against the tool body. The depth adjustment device for the trimmer and the trimmer provided by the present application can prevent eccentricity when the tool body is locked, which is conducive to ensuring the normal use of the tool.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of tool technology, and in particular to a depth adjustment device of a trimmer and a trimmer. Background Art

[0002] With the continuous development of tools, the demand for tool use in more and more work processing scenarios is constantly being met. Especially for some tedious processing that requires human participation, the use of these tools is conducive to reducing manpower input and facilitating operators to perform corresponding operations; at the same time, the use of these tools can greatly improve work efficiency and ensure processing accuracy. For example, the emergence of trimming machines can meet the milling processing needs of woodworking. Unlike other tools, the trimming machine uses a positioning structure to control the tool to perform milling along a predetermined trajectory or a predetermined position during use. After the tool is adjusted to the appropriate processing position, it needs to be fixed to the positioning structure.

[0003] In order to fix the tool body, the existing trimming machines have added a clamping or extrusion type quick lock structure to the positioning base. The base is disconnected during the production and processing of the blank, which reduces the strength and makes it difficult to process. The deformation of the base after processing is not conducive to long-term use. At the same time, when installing the sample guide rail and using an 8mm (millimeter) straight knife for milling and cutting operations, when the tool body is locked, the tool body is squeezed relative to the base, resulting in non-concentricity with the sample guide rail, and the straight knife interferes with the sample guide rail and cannot work normally. Therefore, how to design the positioning structure of the tool is an important issue. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a depth adjustment device for a trimmer and a trimmer, which can prevent eccentricity when the tool body is locked, thereby ensuring the normal use of the tool.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a depth adjustment device for a trimmer. The depth adjustment device for the trimmer includes a base, a rotating member and a plurality of locking members. The base is provided with a receiving space that penetrates the base along a preset direction and allows the tool body to pass through. The rotating member is rotatably connected to the base, and the rotating member is provided with a plurality of guide structures, and the plurality of guide structures are arranged around the preset direction. The plurality of locking members correspond to the plurality of guide structures one by one, each locking member is movably connected to the base, each locking member is engaged with the corresponding guide structure, and the distance between the locking member and the rotation center of the rotating member can be changed with the rotation of the rotating member. The rotating member has a locking position and an unlocking position. When the rotating member is in the locking position, the plurality of locking members are pressed against the tool body. When the rotating member is in the unlocking position, the plurality of locking members are separated from the tool body.

[0006] The embodiment of the present application further provides a trimmer, which includes a tool body and the above-mentioned depth adjustment device of the trimmer, and the tool body passes through the accommodating space of the base of the depth adjustment device of the trimmer.

[0007] The trimmer depth adjustment device and trimmer provided by the embodiment of the present application connect a rotating member and a plurality of locking members on a base, and the plurality of locking members move synchronously under the drive of the rotating member to change the distance between the rotating member and the rotation center. The plurality of locking members can be pressed against the tool body when the rotating member rotates to the locking position, thereby clamping the tool body. Through the synchronous movement between the plurality of locking members, the consistency of the distance between the plurality of locking members and the rotation center of the rotating member can be ensured, thereby ensuring that the tool body is not eccentric when locked, and ensuring the normal use of the tool.

[0008] In some embodiments, the guide structure is an elongated hole, and the elongated hole gradually moves away from the rotation center of the rotating member in the circumferential direction of the plurality of guide structures. In this way, the locking member can be pushed to move through the elongated hole, thereby changing the distance between the locking member and the rotation center of the rotating member during the movement.

[0009] In some embodiments, the plurality of guide structures are evenly distributed around the rotation center of the rotating member. Thus, by evenly distributing the plurality of guide structures around the rotation center of the rotating member, the tool body is clamped more evenly when being locked, thereby ensuring processing stability.

[0010] In some embodiments, the base is provided with a plurality of limiting spaces corresponding to the plurality of locking elements, each limiting space is spaced apart from the accommodation space, and the spacing between each limiting space and the accommodation space gradually increases in the circumferential direction of the plurality of guide structures, and a portion of each locking element is located in the corresponding limiting space. In this way, the limiting space can cooperate with the guide structure to guide the locking element to move along a predetermined path that is gradually retracted or gradually expanded.

[0011] In some embodiments, the base is provided with a plurality of grooves extending toward the accommodation space and along a preset direction, and the plurality of grooves correspond to the plurality of locking members one by one, and each groove includes a first side surface and a second side surface that are arranged opposite to each other. When the rotating member is in the locked position, each locking member abuts against the first side surface of the corresponding groove, and when the rotating member is in the unlocked position, each locking member abuts against the second side surface of the corresponding groove. In this way, the locking member can be positioned by the groove and the movement position of the locking member can be limited.

[0012] In some embodiments, the groove includes a bottom surface facing the accommodation space and connecting the first side surface and the second side surface, and the bottom surface gradually moves away from the accommodation space in the circumferential direction of the plurality of guide structures. In this way, the locking member can be guided by the bottom surface of the groove to move along a predetermined path that is gradually retracted or gradually expanded.

[0013] In some embodiments, the base is provided with a plurality of mounting holes facing a preset direction and spaced apart from the accommodation space, the mounting holes being elongated holes, one end of each locking member being engaged with a corresponding guide structure, and the other end of each locking member being engaged with a corresponding mounting hole. In this way, the mounting holes can be used to facilitate the installation of the locking member.

[0014] In some embodiments, the depth adjustment device of the trimmer further includes a wrench, which is movably connected to the base and can drive the rotating member to change between a locked position and an unlocked position. In this way, the operation convenience of the operator can be improved by providing the wrench.

[0015] In some embodiments, the depth adjustment device of the trimmer further comprises a tightening screw, which passes through the wrench and the rotating member in sequence and is screwed with a nut. In this way, the wrench can control the movement of the rotating member by the tightening screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of a depth adjustment device of a trimmer provided in some embodiments of the present application;

[0018] Figure 2 is a schematic diagram of the main structure of a depth adjustment device for a trimmer provided in some embodiments of the present application;

[0019] Figure 3 is along Figure 2 Schematic diagram of the cross-sectional structure along the middle BB direction;

[0020] Figure 4 is along Figure 2 Schematic diagram of the cross-sectional structure in the CC direction;

[0021] Figure 5 is a schematic diagram of an exploded structure of a depth adjustment device of a trimmer provided in some embodiments of the present application;

[0022] Figure 6 is a schematic diagram of a top view of a rotating member in a depth adjustment device of a trimmer provided in some embodiments of the present application;

[0023] Figure 7 is a schematic diagram of the main structure of a trimming machine provided in some embodiments of the present application;

[0024] Figure 8 is along Figure 7 Schematic diagram of the cross-sectional structure in the middle DD direction;

[0025] Fig. 9 is a schematic diagram of the structure when the rotating part in the trimmer provided by some embodiments of the present application is in a locked position;

[0026] Fig.10 is a schematic diagram of the structure of a trimmer provided by some embodiments of the present application when a rotating member is in an unlocked position;

[0027] Fig.11 is a partial cross-sectional schematic diagram of a depth adjustment device of a trimmer provided in some embodiments of the present application;

[0028] Fig.12 It is a schematic diagram of the partial internal structure of the depth adjustment device of the trimmer provided in some embodiments of the present application.

[0029] Meaning of the reference numerals in the figures:

[0030] Base 11 End caps 111 fastener 1111 Adjustment parts 112 Tooth 113 Gasket 114 Nut 115 Rotating parts 12 Guide structure 121 Mating surface 122 Locking parts 13 wrench 14 Fixings 141 Tightening screw 15 Nuts 16 Accommodation space 101 Limited space 102 Grooves 103 First side 1031 Second side 1032 Bottom 1033 Mounting holes 104 Tool body 21 DETAILED DESCRIPTION

[0031] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not constitute any limitation, and the various embodiments can be combined with each other and referenced to each other without contradiction.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0033] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0034] Combine the following Figures 1 to 12 The structure of the depth adjustment device of the trimmer provided in some embodiments of the present application is described. Figures 7 to 10 The overall structure of the trimmer is shown.

[0035] like Figures 1 to 12 As shown, some embodiments of the present application provide a depth adjustment device for a trimmer, comprising a base 11, a rotating member 12, and a plurality of locking members 13. The base 11 is provided with a plurality of locking members 13 along a preset direction ( Figure 1 The rotating member 12 is rotatably connected to the base 11, and is provided with a plurality of guide structures 121, and the plurality of guide structures 121 are arranged around a preset direction. The plurality of locking members 13 correspond to the plurality of guide structures 121 one by one, and each locking member 13 is movably connected to the base 11, and each locking member 13 is engaged with the corresponding guide structure 121, and the distance between the locking member 13 and the rotation center of the rotating member 12 can be changed as the rotating member 12 rotates. The rotating member 12 has a locking position and an unlocking position. When the rotating member 12 is in the locking position, the plurality of locking members 13 are pressed against the tool body 21, and when the rotating member 12 is in the unlocking position, the plurality of locking members 13 are separated from the tool body 21. That is to say, the guide structure 121 can cause the locking members 13 to move synchronously along a predetermined trajectory, so that the multiple locking members 13 release the tool body 21 when the enclosed space is expanded, and clamp the tool body 21 when the enclosed space is reduced. Through this locking method, it can be ensured that the tool body 11 is not eccentric when it is locked.

[0036] The base 11 is the main part of the depth adjustment device of the trimmer. The base 11 provides a basis for locking and fixing the tool body 21. After locking the tool body 21, the trimmer can be turned on, and the tool body 21 can be milled along a predetermined trajectory or a predetermined position using the positioning structure formed on the base 11. The accommodating space 101 of the base 11 plays a accommodating role when locked to the tool body 21, and can accommodate part of the shell of the tool body 21 and the operating part close to the blade. The accommodating space 101 runs through the preset direction of the base 11, that is, the depth direction of the processing position of the tool body 21.

[0037] The rotating member 12 is a part for controlling and locking the tool body 21. The rotating member 12 can rotate relative to the base 11, and the guide structure 121 on the rotating member 12 can drive the locking component, that is, the locking member 13 to move and change the distance between the rotating member 12 and the rotation center, thereby controlling the locking of the tool body 21. The guide structure 121 can be in the form of a groove, a blind hole, or a through hole. The rotating member 12 can adopt an annular structure or a hollow disc structure.

[0038] The locking member 13 is a part for locking the tool body 21. The locking member 13 is movably connected to the base 11, and changes the distance between the locking member 13 and the rotation center of the rotating member 12 under the drive of the rotating member 12. Multiple locking members 13 are arranged corresponding to multiple guide structures 121 on the rotating member 12, and are all arranged around a preset direction. Driven by the rotating member 12, the multiple locking members 13 move synchronously to ensure the consistency of the distance between the multiple locking members 13 and the rotation center of the rotating member 12. Among them, the rotation center of the rotating member 12 is located on the central axis of the columnar base 11, corresponding to the rotation center of the blade of the tool body 21.

[0039] When the rotating member 12 is rotated to the locking position, the multiple locking members 13 reduce the distance between the rotating member 12 and the rotation center and then press on the tool body 21. When the rotating member 12 is rotated to the unlocking position, the multiple locking members 13 increase the distance between the rotating member 12 and the rotation center and then separate from the tool body 21. Thus, the clamping of the tool body 21 is controlled. The locking member 13 can be a rod-shaped structure. The engagement between the locking member 13 and the guide structure 121 can be a shaft hole matching form, a protrusion groove matching form, or a hook and slot matching form.

[0040] In the depth adjustment device of the trimmer provided in some embodiments of the present application, a rotating member 12 and a plurality of locking members 13 are connected on the base 11, and the plurality of locking members 13 move synchronously under the drive of the rotating member 12 to change the distance between the rotating member 12 and the rotation center. When the rotating member 12 rotates to the locking position, the plurality of locking members 13 can be pressed against the tool body 21, thereby clamping the tool body 21. Through the synchronous movement between the plurality of locking members 13, the consistency of the distance between the plurality of locking members 13 and the rotation center of the rotating member 12 can be ensured, thereby ensuring that the tool body 21 is not eccentric when being locked, and ensuring the normal use of the tool.

[0041] In addition, the tool body 21 can be locked by the movement of the locking member 12, and the tool body 21 does not need to be locked by the deformation and contraction of the base 11. Therefore, there is no need to design a disconnected notch in the base 11, which can ensure the overall continuity of the structure of the base 11, facilitate the processing of the base 11, and ensure the overall strength of the base 11.

[0042] In some embodiments, Figure 6 As shown, the guide structure 121 may be an elongated hole, and the elongated hole gradually moves away from the rotation center of the rotating member 12 in the circumferential direction of the plurality of guide structures 121 .

[0043] The guide structure 121 formed by the elongated hole can ensure that the locking member 13 moves along the path direction formed by the elongated hole during the rotation of the rotating member 12. In order to change the distance between the locking member 13 and the rotation center of the rotating member 12 during the movement, the elongated hole can be gradually moved away from the rotation center of the rotating member 12 in the circumferential direction of the multiple guide structures 121. Thus, when the rotating member 12 rotates around the circumferential direction of the multiple guide structures 121, it can gradually move away from the rotation center of the rotating member 12, and when the rotating member 12 rotates in the opposite direction of the circumferential direction of the multiple guide structures 121, it can gradually approach the rotation center of the rotating member 12. In actual situations, the elongated hole can be a straight elongated hole or a curved elongated hole.

[0044] In addition, the plurality of guide structures 121 may be evenly distributed around the rotation center of the rotating member 12 .

[0045] like Figure 6 As shown, the number of guide structures 121 can be set to three, and every two guide structures 121 are set at a position of 120 degrees at the central angle of the circle. By evenly arranging multiple guide structures 121 on the periphery of the rotation center of the rotating member 12, multiple locking members 13 can evenly play a clamping role on the periphery of the tool body 21, thereby making the distribution of the clamping force on the tool body 21 more uniform. The stability of the tool during operation can be ensured. In actual situations, the number of guide structures 121 can also be four, five or six. Consistent with the guide structures 121, the number of locking members 13 can be four, five or six.

[0046] In some embodiments, Figure 3 and Figure 4 As shown, the base 11 can be provided with a plurality of limiting spaces 102 corresponding one by one to the plurality of locking members 13, each limiting space 102 is spaced apart from the accommodating space 101, and the spacing between each limiting space 102 and the accommodating space 101 gradually increases in the circumferential direction of the plurality of guide structures 121, and a portion of each locking member 13 is located in the corresponding limiting space 102.

[0047] The limiting space 102 is spaced apart from the accommodating space 101 and is located in the peripheral area of ​​the accommodating space 101. The limiting space 102 can cooperate with the guide structure 121 on the rotating member 12 to guide the movement of the locking member 13 at the location. The spacing between each limiting space 102 and the accommodating space 101 gradually increases in the circumferential direction of the plurality of guide structures 121, thereby guiding the plurality of locking members 13 to move away from the rotation center of the rotating member 12 or approach the rotation center of the rotating member 12 during the movement.

[0048] The rotating member 12 may be connected to an end of the base 11, for example, near the bottom end of the workpiece. Figure 5 As shown, when the rotating member 12 is installed on the base 11, the position can be fixed by the end cover 111, and the end cover 111 can be connected to the base 11 by the fastener 1111. The limiting space 102 can be set near the bottom end of the base 11. The part of the locking member 13 passes through the limiting space 102 and engages with the guide structure 121. By forming the limiting space 102 on the inner side of the base 11 close to the accommodating space 101, it is helpful to guide the locking member 13 to move along a predetermined path that is gradually retracted or gradually expanded, so as to facilitate the control of the locking of the tool body 21.

[0049] In some embodiments, Figures 2 to 4 As shown, the base 11 may be provided with a plurality of grooves 103 extending toward the accommodation space 101 and along a preset direction, and the plurality of grooves 103 correspond one to one with the plurality of locking members 13. Each groove 103 includes a first side surface 1031 and a second side surface 1032 arranged opposite to each other, and when the rotating member 12 is in the locking position, each locking member 13 abuts against the first side surface 1031 of the corresponding groove 103, and when the rotating member 12 is in the unlocking position, each locking member 13 abuts against the second side surface 1032 of the corresponding groove 103.

[0050] The groove 103 can provide a position for the setting of the locking member 13 and play a limiting role in the movement of the locking member 13. The locking member 13 can be placed in the groove 103 during installation. At the same time, when the locking member 13 moves to press the tool body 21, it can abut on the first side surface 1031 of the groove 103. When the locking member 13 moves to leave the tool body 21, it can abut on the second side surface 1032 of the groove 103. The movement position of the locking member 13 is thus limited by the groove 103.

[0051] In addition, the groove 103 may include a bottom surface 1033 facing the receiving space 101 and connecting the first side surface 1031 and the second side surface 1032 , and the bottom surface 1033 gradually moves away from the receiving space 101 in the circumferential direction of the plurality of guide structures 121 .

[0052] The bottom surface 1033 gradually moves away from the accommodation space 101 in the circumferential direction of the plurality of guide structures 121, that is, the depth of the groove 103 gradually increases in the circumferential direction of the plurality of guide structures 121. This provides a guiding effect for guiding the locking member 13 to move along a predetermined path that is gradually retracted or gradually expanded. In the process of the locking member 13 moving against the bottom surface 1033 of the groove 103, it can gradually move away from the rotation center of the rotating member 12, or gradually approach the rotation center of the rotating member 12.

[0053] In some embodiments, the base 11 may be provided with a plurality of mounting holes 104 facing a preset direction and spaced apart from the accommodating space 101, wherein the mounting holes 104 are elongated holes, and one end of each locking member 13 is engaged with the corresponding guide structure 121, and the other end of each locking member 13 is engaged with the corresponding mounting hole 104.

[0054] The mounting hole 104 disposed on the inner side of the base 11 near the accommodating space 101 provides a location for the installation of the locking member 13. When one end of the locking member 13 is engaged with the guide structure 121, the other end can be engaged with the mounting hole 104 on the base 11, thereby realizing a movable connection with the base 11, and driven by the rotating member 12, the locking member 13 moves along a predetermined path of gradually contracting or gradually expanding.

[0055] like Figure 5 As shown, the depth adjustment device of the trimmer may further include a wrench 14, which is movably connected to the base 11 and can drive the rotating member 12 to change between a locked position and an unlocked position.

[0056] The arrangement of the wrench 14 provides convenience for the operator to control the rotation of the rotating member 12. When the position of the rotating member 12 needs to be changed, it can be controlled by rotating the wrench 14, which improves the convenience of operation for the operator.

[0057] In some embodiments, the depth adjustment device of the trimmer may further include a tightening screw 15 , which passes through the wrench 14 and the rotating member 12 in sequence and is screwed with a nut 16 .

[0058] like Figure 5 , Fig.11 and Fig.12 As shown, the wrench 14 can be rotatably connected to the base 11 through the fixing member 141, and the tightening screw 15 and the nut 16 cooperate to connect the wrench 14 and the rotating member 12, so that the wrench 14 can pull the rotating member 12. Fig. 9 and Fig.12 As shown, the wrench 14 is in a closed state downward, at which time the rotating member 12 is in a locked position, and the locking member 13 locks the tool body 21. Fig.10As shown, the wrench 14 is in an open state with the rotating member 12 facing upwards. At this time, the rotating member 12 is in an unlocked position, and the locking member 13 is separated from the tool body 21. When the wrench 14 is changed from a closed state to an open state, the tightening screw 15 pulls the rotating member 12 to rotate, and drives the locking member 13, so that the diameter of the columnar space surrounded by the multiple locking members 13 becomes larger and the tool body 21 is loosened. When the wrench 14 is changed from an open state to a closed state, the protrusion on the wrench 14 applies pressure to the mating surface 122 of the rotating member 12, pushes the rotating member 12, causes the rotating member 12 to rotate in the opposite direction, and drives the locking member 13, so that the diameter of the columnar space surrounded by the multiple locking members 13 becomes smaller and the tool body 21 is locked.

[0059] In addition, if Figure 5 As shown, the base 11 is provided with an adjusting member 112, which cooperates with the toothed member 113, and gaskets 114 are mounted on both sides of the toothed member 113 to fix the position of the toothed member 113. At the same time, the adjusting member 112 is screwed with a nut 115 to be installed on the base 11. The toothed member 113 can cooperate with the rack provided on the housing of the tool body 21, and there is a scale showing the depth near the rack. When the depth of the tool body 21 needs to be adjusted, the control wrench 14 can be put into an open state, and by rotating the adjusting member 112, the tool body 21 can be driven to change its position in the depth direction by the cooperation between the toothed member 113 and the rack provided on the housing of the tool body 21, thereby achieving depth adjustment. After the adjustment is completed, the wrench 14 can be turned back to a closed state to re-lock the tool body 21.

[0060] like Figures 7 to 10 As shown, some embodiments of the present application further provide a trimmer, which includes a tool body 21 and the above-mentioned depth adjustment device of the trimmer, and the tool body 21 passes through the accommodating space 101 of the base 11 of the depth adjustment device of the trimmer.

[0061] By adopting the above-mentioned depth adjustment device, the tool body 21 can be locked without eccentricity, which is conducive to ensuring the normal use of the trimmer. At the same time, the base 11 adopts a continuous structure in the direction surrounding the accommodating space 101, which is easy to process the base 11, and when the tool body 21 is locked, the base 11 does not need to be deformed.

[0062] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A depth adjustment device for a trimming machine, characterized in that: include: A base is provided with a receiving space penetrating the base in a preset direction and allowing the tool body to pass through, the base having an adjusting member and a toothed member, the toothed member being mounted on the adjusting member, the toothed member engaging with a rack of the tool body to drive the tool body to move up and down; A rotating member, rotatably connected to the base, the rotating member is provided with a plurality of guide structures, and the plurality of guide structures are arranged around the preset direction; A plurality of locking members corresponding to the plurality of guide structures one by one, each of the locking members being movably connected to the base, each of the locking members being engaged with the corresponding guide structure, and being able to change the distance between the locking member and the rotation center of the rotating member as the rotating member rotates; The rotating member has a locking position and an unlocking position. When the rotating member is located at the locking position, the plurality of locking members are pressed against the tool body, and the toothed member is combined with the tool body. When the rotating member is located at the unlocking position, the plurality of locking members are separated from the tool body. By rotating the adjusting member, the tool body is driven to move freely with the aid of the toothed member and the rack of the tool body.

2. The depth adjustment device of the trimming machine according to claim 1, characterized in that: The guide structure is an elongated hole, and the elongated hole gradually moves away from the rotation center of the rotating member in the circumferential direction of the plurality of guide structures.

3. The depth adjustment device of the trimming machine according to claim 1 or 2, characterized in that: The plurality of guide structures are evenly distributed around the periphery of the rotation center of the rotating member.

4. The depth adjustment device for the trimmer according to claim 1, characterized in that: The base is provided with a plurality of limiting spaces corresponding to the plurality of locking members one by one, each of the limiting spaces is spaced apart from the accommodating space, and the spacing between each of the limiting spaces and the accommodating space gradually increases in the circumferential direction of the plurality of guide structures, and a portion of each of the locking members is located within the corresponding limiting space.

5. The depth adjustment device for a trimmer according to claim 1, characterized in that: The base is provided with a plurality of grooves facing the accommodating space and extending along the preset direction, the plurality of grooves corresponding to the plurality of locking members one by one, each of the grooves comprising a first side surface and a second side surface arranged opposite to each other, when the rotating member is located in the locking position, each of the locking members abuts against the first side surface of the corresponding groove, and when the rotating member is located in the unlocking position, each of the locking members abuts against the second side surface of the corresponding groove.

6. The depth adjustment device of the trimming machine according to claim 5, characterized in that: The groove includes a bottom surface facing the accommodation space and connecting the first side surface and the second side surface, and the bottom surface gradually moves away from the accommodation space in a circumferential direction of the plurality of guide structures.

7. The depth adjustment device for a trimmer according to claim 1, characterized in that: The base is provided with a plurality of mounting holes facing the preset direction and spaced apart from the accommodating space, wherein the mounting holes are elongated holes, one end of each locking member is engaged with the corresponding guide structure, and the other end of each locking member is engaged with the corresponding mounting hole.

8. The depth adjustment device for a trimmer according to claim 1, characterized in that: It also includes a wrench, which is movably connected to the base and can drive the rotating member to change between the locking position and the unlocking position.

9. The depth adjustment device for a trimmer according to claim 8, characterized in that: It also includes a tightening screw, which passes through the wrench and the rotating member in sequence and is screwed with a nut.

10. A trimming machine, characterized in that: The invention comprises a tool body and a depth adjustment device for an edge trimmer according to any one of claims 1 to 9, wherein the tool body passes through a receiving space of a base of the depth adjustment device for the edge trimmer.

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