A handheld marking tool

Abstract

This utility model relates to the field of scribing instruments, and proposes a handheld scribing instrument, including a frame, a bottom wheel, side wheels, and scribing needles. The bottom wheel and side wheels are rotatably mounted on the bottom side of the frame. Multiple side wheels are arranged along the length of the frame, and the length of the frame, the rotation axis of the bottom wheel, and the rotation axis of the side wheels are all perpendicular to each other. The scribing needle is fixedly mounted on the frame, its axial direction is parallel to the rotation axis of the side wheels, and its bottom end is located below the bottom side of the bottom wheel. This utility model, by providing a bottom wheel and multiple side wheels that roll in contact with the workpiece surface, can reduce wear on both the scribing instrument and the workpiece surface, extending their service life. By ensuring that the rotation axes of the bottom wheel, the rotation axes of the side wheels, and the arrangement directions of the multiple side wheels are all perpendicular to each other, the smoothness of the scribing instrument's movement on the workpiece can be improved, thereby ensuring the scribing accuracy.

Description

Technical Field

[0001] This utility model relates to the field of line marking technology, and in particular to a handheld line marking device. Background Technology

[0002] Marking tools are widely used in manufacturing, construction, art creation and many other fields. Through its unique design, it can mark straight lines, curves or other shapes on a variety of materials such as metal, wood, plastic and paper. These lines can be used as a reference for cutting, drilling, folding or alignment in subsequent processing.

[0003] Marking devices include mechanical marking devices, ink fountain marking devices, and laser marking devices, among which mechanical marking devices are the most widely used. For example, the handheld hole edge marking device disclosed in utility model with announcement number CN203527449U has a positioning surface on its main body, and uses the sliding cooperation between the positioning surface and the part to mark the part.

[0004] The accuracy of the scribing position directly affects the machining precision of the parts. In the above technical solution, only a positioning surface that mates with the parts is set. If the main body is tilted, the position of the scribing pen will shift, affecting the scribing accuracy. At the same time, the sliding fit between the positioning surface and the workpiece will generate greater wear, which is not conducive to ensuring the service life of the scribing device. Utility Model Content

[0005] In view of this, the present invention proposes a handheld scribing tool that can improve scribing accuracy and extend service life.

[0006] The technical solution of this utility model is achieved as follows: This utility model provides a handheld marking tool, including a frame, bottom wheels, side wheels, and marking needles, wherein...

[0007] Both the bottom wheel and the side wheel are rotatably mounted on the bottom side of the frame. Multiple side wheels are provided along the length of the frame. The length of the frame, the rotation axis of the bottom wheel, and the rotation axis of the side wheel are perpendicular to each other.

[0008] The marking needle is fixedly mounted on the frame, the axial direction of the marking needle is parallel to the rotation axis of the side wheel, and the bottom end of the marking needle is located below the bottom side of the bottom wheel.

[0009] Based on the above technical solutions, preferably, the frame is provided with mounting holes;

[0010] The marking needle includes a mounting base, a needle body, and a fixing nut. The mounting base is disposed in the mounting hole and abuts against the bottom side of the frame. The needle body is disposed through the mounting base. The fixing nut is threadedly connected to the mounting base and abuts against the top side of the frame.

[0011] More preferably, the mounting hole is an oblong hole.

[0012] More preferably, the length direction of the mounting hole is parallel to the rotation axis of the bottom wheel.

[0013] Based on the above technical solutions, preferably, the bottom side of the bottom wheel is located at the middle position of the circumference of the side wheel.

[0014] More preferably, both ends of the side wheel are provided with rounded corners.

[0015] Based on the above technical solutions, preferably, the frame includes a base plate and a handle, with the handle fixedly disposed on the top side of the base plate.

[0016] More preferably, the handle includes a straight portion and two connecting portions, wherein,

[0017] The straight sections are arranged parallel to each other and spaced apart above the base plate;

[0018] The connecting part is integrally formed between the flat part and the base plate, and the two connecting parts are respectively disposed at both ends of the flat part.

[0019] More preferably, the distance between the two connecting portions gradually decreases along the direction from the base plate to the straight portion.

[0020] More preferably, the frame also includes a T-shaped seat, which is fixedly disposed on the bottom side of the base plate;

[0021] The bottom wheels are respectively rotatably mounted at both ends of the T-shaped base.

[0022] The handheld marking device of this utility model has the following advantages over the prior art:

[0023] (1) By setting a bottom wheel and multiple side wheels that are rolled and connected to the workpiece surface, the wear of the scribing device and the workpiece surface can be reduced and the service life of both can be extended. By making the rotation axis of the bottom wheel, the rotation axis of the side wheels and the setting direction of the multiple side wheels perpendicular to each other, the smoothness of the scribing device on the workpiece can be improved, thereby ensuring the scribing accuracy of the scribing device.

[0024] (2) By setting an elongated hole and setting the scribing needle to include a mounting base, needle body and fixing nut, the position of the scribing needle on the frame can be adjusted, so that the scribing position of the scribing device can be adjusted according to the actual working conditions.

[0025] (3) By setting rounded corners, the sharp edges on the scribing tool can be prevented from causing injury to the operator or parts, thus achieving a good protective effect. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a perspective view of the bottom side of a handheld marking tool according to the present invention.

[0028] Figure 2 This is a perspective view of the top side of a handheld marking tool according to the present invention.

[0029] Figure 3 This is a side view of a handheld marking device according to the present invention.

[0030] Figure 4 This is a cross-sectional view of the mounting hole in a handheld marking tool according to the present invention.

[0031] Figure 5 This is a front view of a handheld marking device according to the present invention.

[0032] The components are: 1. Frame; 11. Base plate; 12. Handle; 13. T-shaped seat; 121. Straight part; 122. Connecting part; 101. Mounting hole; 2. Bottom wheel; 3. Side wheel; 301. Rounded corner; 4. Marking needle; 41. Mounting seat; 42. Needle body; 43. Fixing nut. Detailed Implementation

[0033] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] This utility model discloses a handheld scribing tool, which includes a frame 1, a bottom wheel 2, a side wheel 3, and a scribing needle 4, and is used to scribing lines on parts.

[0035] The scribing needle 4 is used to scribing lines on parts. The scribing needle 4 is fixedly mounted on the frame 1, such as... Figure 5 As shown, the bottom wheel 2 is rotatably mounted on the bottom side of the frame 1 and rolls on the top side of the part. The side wheel 3 is rotatably mounted on the bottom side of the frame 1 and rolls on the right side of the part. The axial direction of the scribing needle 4 is parallel to the rotation axis of the side wheel 3, and the bottom end of the scribing needle 4 is located below the bottom side of the bottom wheel 2. By using the movement of the bottom wheel 2 and the side wheel 3 on the part, the bottom end of the scribing needle 4 can scribble lines on the part.

[0036] The scribing accuracy of a part depends primarily on the stability of the scribing tool's movement on the part's reference surface. For example... Figure 5 As shown, the right side of the part is the reference surface of the part. In order to improve the scribing accuracy of the part, multiple side wheels 3 are set. Multiple side wheels 3 are set along the length direction of the frame 1, and the length direction of the frame 1, the rotation axis of the bottom wheel 2 and the rotation axis of the side wheels 3 are perpendicular to each other.

[0037] The marking needle 4 includes a mounting base 41, a needle body 42, and a fixing nut 43. The frame 1 has a mounting hole 101. The mounting base 41 is disposed in the mounting hole 101 and abuts against the bottom side of the frame 1. The needle body 42 is disposed through the mounting base 41. The fixing nut 43 is threadedly connected to the mounting base 41 and abuts against the top side of the frame 1. By rotating the fixing nut 43, the mounting base 41 and the needle body 42 can be disassembled from the frame 1, thereby allowing maintenance of the needle body 42.

[0038] like Figure 2 and Figure 4 As shown, the mounting hole 101 is preferably an oblong hole, also called a waist-shaped hole. The mounting base 41 can slide within the mounting hole 101 to adjust the position of the needle body 42, so that the scribing device can adjust the distance between the scribing position and the reference surface of the part according to actual needs.

[0039] To improve the efficiency of adjusting the position of the needle body 42, it is preferable to make the length direction of the mounting hole 101 parallel to the rotation axis of the bottom wheel 2.

[0040] The needle body 42 can be a steel needle, or it can be a spring-loaded automatic pressing needle structure, or it can be a pen that can make marks, etc.

[0041] like Figure 5 As shown, both ends of the side wheel 3 are provided with rounded corners 301. The rounded corners 301 are arc-shaped chamfers, which can prevent damage to operators or parts, thus providing a certain degree of protection. Figure 3 and Figure 5As shown, the bottom side of the bottom wheel 2 is located in the middle of the periphery of the side wheel 3, so that the side wheel 3 and the bottom wheel 2 can simultaneously abut against the part during the scribing process.

[0042] The frame 1 includes a base plate 11, handles 12, and T-shaped bases 13, such as Figure 2 As shown, the handle 12 is fixedly installed on the top side of the base plate 11, the side wheel 3 is installed on the bottom side of the base plate 11, the T-shaped seat 13 is fixedly installed on the bottom side of the base plate 11, and the bottom wheels 2 are respectively rotatably installed at both ends of the T-shaped seat 13. The operator can hold the handle 12 to move the scribing device, thereby making the scribing operation of the scribing device more stable.

[0043] like Figure 1 As shown, there are two T-shaped seats 13 and two side wheels 3. The two T-shaped seats 13 are arranged opposite each other on both sides of the scribing needle 4 and correspond one-to-one with the two side wheels 3, thus ensuring the smooth movement of this scribing device during scribing operation.

[0044] like Figure 3 As shown, the handle 12 includes a straight part 121 and two connecting parts 122. The straight parts 121 are arranged parallel and spaced apart above the base plate 11. The connecting parts 122 are integrally formed between the straight part 121 and the base plate 11. The two connecting parts 122 are respectively arranged at both ends of the straight part 121. The operator holds the straight part 121 to move the frame 1.

[0045] To reduce the space occupied by the handle 12, the distance between the two connecting parts 122 gradually decreases along the direction from the base plate 11 to the flat part 121. At the same time, when the operator holds the flat part 121, the two connecting parts 122 can limit the operator's palm and prevent it from slipping.

[0046] The method of using the handheld marking tool of this utility model is as follows:

[0047] First, adjust the fixed position of the mounting base 41 in the mounting hole 101 by rotating the fixing nut 43. Then, let the side wheel 3 abut against the reference surface of the part and the bottom wheel 2 abut against the scribing surface of the part. Finally, hold the flat part 121 and move the scribing device to scribing the corresponding marks on the part.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A handheld marking tool, characterized in that: Includes frame (1), bottom wheels (2), side wheels (3), and marking needles (4), among which, Both the bottom wheel (2) and the side wheel (3) are rotatably mounted on the bottom side of the frame (1). Multiple side wheels (3) are provided along the length direction of the frame (1). The length direction of the frame (1), the rotation axis of the bottom wheel (2) and the rotation axis of the side wheel (3) are perpendicular to each other. The marking needle (4) is fixedly mounted on the frame (1). The axial direction of the marking needle (4) is parallel to the rotation axis of the side wheel (3), and the bottom end of the marking needle (4) is located below the bottom side of the bottom wheel (2).

2. The handheld marking tool as described in claim 1, characterized in that: The frame (1) is provided with mounting holes (101); The marking needle (4) includes a mounting base (41), a needle body (42), and a fixing nut (43). The mounting base (41) is disposed in the mounting hole (101) and abuts against the bottom side of the frame (1). The needle body (42) is disposed through the mounting base (41). The fixing nut (43) is threadedly connected to the mounting base (41) and abuts against the top side of the frame (1).

3. A handheld marking tool as described in claim 2, characterized in that: The mounting hole (101) is an oblong hole.

4. A handheld marking tool as described in claim 3, characterized in that: The length direction of the mounting hole (101) is parallel to the rotation axis of the bottom wheel (2).

5. A handheld marking tool as described in claim 1, characterized in that: The bottom side of the bottom wheel (2) is located in the middle of the periphery of the side wheel (3).

6. A handheld marking tool as described in claim 5, characterized in that: Both ends of the side wheel (3) are provided with rounded corners (301).

7. A handheld marking tool as described in claim 1, characterized in that: The frame (1) includes a base plate (11) and a handle (12), the handle (12) being fixedly installed on the top side of the base plate (11).

8. A handheld marking tool as described in claim 7, characterized in that: The handle (12) includes a straight portion (121) and two connecting portions (122), wherein, The straight sections (121) are arranged parallel to and spaced apart above the base plate (11); The connecting part (122) is integrally formed between the flat part (121) and the base plate (11), and the two connecting parts (122) are respectively disposed at both ends of the flat part (121).

9. A handheld marking tool as described in claim 8, characterized in that: The distance between the two connecting portions (122) gradually decreases along the direction from the base plate (11) to the straight portion (121).

10. A handheld marking tool as described in claim 9, characterized in that: The frame (1) also includes a T-shaped seat (13), which is fixedly installed on the bottom side of the base plate (11); The bottom wheels (2) are respectively rotatably mounted at both ends of the T-shaped seat (13).

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