Laser marking instrument

Abstract

The utility model relates to a laser line marking instrument which comprises a shell with a containing cavity. The pushing piece is arranged on the shell and is arranged to move back and forth in the first direction; the fixing needle is arranged in the containing cavity, the first end of the fixing needle is connected with the pushing piece, a penetrating hole is formed in the position, corresponding to the second end of the fixing needle, of the shell, the fixing needle moves back and forth between the first position and the second position in the first direction, and when the fixing needle is located at the first position, the second end of the fixing needle is located in the containing cavity or the penetrating hole; when the fixing needle is located at the second position, the second end penetrates through the through hole and is located outside the shell; when the fixing needle is located at the first position, the movable part is located at a third position for limiting the second end to penetrate out of the through hole; when the movable part is located at the fourth position, the fixing needle can move from the first position to the second position. Even if the pushing piece is touched by mistake, the second end of the fixing needle cannot penetrate out of the penetrating hole, the second end of the fixing needle is prevented from hurting operators or damaging the surface of a detected wall or an object, and the laser marking instrument is safer and more reliable.

Description

Technical Field

[0001] This application relates to the field of laser marking technology, and in particular to a laser marking device. Background Technology

[0002] Laser line markers, also known as laser line projectors, are widely used in engineering surveying and interior decoration.

[0003] Currently, laser line markers are typically wall-mounted, which can lead to instability and inaccurate markings. Therefore, it's necessary to fix the laser line marker to a wall or the surface of the object being inspected. This is usually done by inserting pins into the surface of the wall or object.

[0004] However, if the pin is accidentally triggered, it may injure the operator or damage the surface of the wall or object being inspected. Utility Model Content

[0005] Therefore, it is necessary to provide a safe and reliable laser detector.

[0006] This application provides a laser marking device, including a housing having a cavity; a pusher disposed in the housing and arranged to move back and forth along a first direction; a fixing pin disposed in the cavity and extending along the first direction, a first end of the fixing pin being connected to the pusher; a through hole being provided in the housing at a position corresponding to the second end of the fixing pin; the fixing pin moving back and forth between a first position and a second position along the first direction under the action of the pusher; when the fixing pin is in the first position, the second end is located in the cavity or the through hole; when the fixing pin is in the second position, the second end protrudes through the through hole and is located outside the housing; and a movable member disposed on the housing, arranged to move back and forth between a third position and a fourth position along a second direction, the second direction being at an angle to the first direction; when the fixing pin is in the first position, the movable member is located in the third position, restricting the second end from protruding through the through hole; when the movable member is in the fourth position, the fixing pin can move from the first position to the second position.

[0007] In one embodiment, the pusher includes a limiting portion located beside the fixing pin, the limiting portion being located within the cavity, and the wall plate on the housing having the perforation is defined as the first wall plate. When the movable member is in the third position, a portion of the movable member is located between the limiting portion and the first wall plate.

[0008] In one embodiment, the pusher includes a push portion, a first end of the fixing pin is connected to the push portion, the housing has a mounting hole for mounting the push portion, and the limiting portion is connected to the push portion and is at least partially located on the periphery of the push portion to restrict the push portion from disengaging from the mounting hole.

[0009] In one embodiment, the periphery of the mounting hole extends into the cavity along the first direction to form an annular convex wall, and the limiting portion is located between the convex wall and the first wall plate.

[0010] In one embodiment, there are at least two limiting portions, which are arranged at circumferential intervals along the pushing portion.

[0011] In one embodiment, the movable member is provided with a clearance opening through which the fixing pin passes. The clearance opening extends along the second direction. When the fixing pin is in the second position, the limiting part is located inside the clearance opening. When the fixing pin is in the first position, the limiting part is located on the side of the clearance opening opposite to the first wall panel.

[0012] In one embodiment, the movable member has a protrusion on the side opposite to the first wall panel. When the movable member is in the third position, the limiting part and the protrusion are arranged sequentially along the first direction, and the limiting part can abut against the first surface of the protrusion, with the first surface of the protrusion facing the limiting part.

[0013] In one embodiment, the third position is located outside the fourth position, and when the movable member is in the fourth position, along the second direction, the limiting portion is located outside the protrusion.

[0014] In one embodiment, a first elastic member acting on the movable member is further provided in the cavity, the first elastic member causing the movable member to always have a tendency to move outward along the second direction.

[0015] In one embodiment, a second elastic element is provided within the cavity to act on the pusher, the second elastic element causing the pusher to always have a tendency to move away from the perforation along the first direction.

[0016] Compared with existing technologies, the laser marking device provided in this application, when the second end of the fixed needle is located in the cavity or through hole, the presence of the movable part restricts the second end of the fixed needle from protruding through the through hole. Therefore, even if the pushing part is accidentally touched, the second end of the fixed needle cannot be protruded through the through hole, preventing injury to the operator or damage to the inspection wall or object surface. This makes the laser marking device safer and more reliable. When it is necessary to allow the second end of the fixed needle to protrude through the through hole, simply move the movable part to the fourth position. At this point, the movable part releases the restriction on the movement of the fixed needle, allowing it to move to the second position where the second end protrudes through the through hole. The entire operation is convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of a laser marking device according to an embodiment of this application;

[0019] Figure 2 for Figure 1 A cross-sectional view of the fixed pin in the first position of the laser marking instrument;

[0020] Figure 3 for Figure 2 A magnified view of a section at point I;

[0021] Figure 4 for Figure 1 A cross-sectional view of a laser marking instrument;

[0022] Figure 5 for Figure 1 A schematic diagram of the cooperation structure between the pushing and moving parts in the laser marking instrument with the fixed needle in the first position;

[0023] Figure 6 for Figure 1 A cross-sectional view of the fixed pin in the second position of the laser marking instrument;

[0024] Figure 7 for Figure 6 Enlarged view of a section at point II;

[0025] Figure 8 for Figure 1 A schematic diagram of the working structure of the pusher and the movable part in the second position of the fixed needle in the laser marking instrument.

[0026] Reference numerals: 1. Shell; 10. Cavity; 101. Second extension foot; 11. First wall panel; 111. Perforation; 112. Guide channel; 12. Second wall panel; 121. Mounting hole; 122. Protruding wall; 1221. Clearance groove; 13. Peripheral wall; 2. Pushing member; 21. Limiting part; 22. Pushing part; 23. Mounting pipe; 3. Fixing pin; 31. First end; 32. Second end; 4. Movable member; 41. Clearance opening; 411. First side; 51. Protrusion; 511. First surface; 52. First extension foot; 6. First elastic member; 7. Second elastic member. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," "side," "top," "bottom," and similar expressions used in this application's specification are merely for describing various exemplary structural parts and elements of this application. However, their use herein is for illustrative purposes only and is determined based on the exemplary orientations shown in the accompanying drawings, and does not represent the only possible implementation. Since the embodiments disclosed in this application can be arranged in different orientations, these terms indicating orientation are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that "axial arrangement" means that the overall arrangement direction is along the axial direction, including but not limited to axial extension, and may be at an angle to the axial direction.

[0032] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0033] like Figures 1-8 As shown, this application discloses a laser line marker. The laser line marker includes a housing 1, a pusher 2, a fixing pin 3, and a movable part 4. The housing 1 has a cavity 10. The pusher 2 is disposed on the housing 1 and arranged to move back and forth along a first direction A.

[0034] like Figure 3 and Figure 7 As shown, the fixing pin 3 is disposed in the cavity 10 and extends along the first direction A. The first end 31 of the fixing pin 3 is connected to the pusher 2. The housing 1 has a through hole 111 at a position corresponding to the second end 32 of the fixing pin 3. Under the action of the pusher 2, the fixing pin 3 moves back and forth between the first position and the second position along the first direction A. When the fixing pin 3 is in the first position, the second end 32 is located in the cavity 10 or in the through hole 111. When the fixing pin 3 is in the second position, the second end 32 passes through the through hole 111 and is located outside the housing 1.

[0035] like Figure 3 and Figure 7 As shown, the movable member 4 is disposed on the housing 1. The movable member 4 is arranged to move back and forth between the third position and the fourth position along the second direction B. The second direction B is at an angle to the first direction A. When the fixed pin 3 is in the first position, the movable member 4 is in the third position that restricts the second end 32 from passing through the through hole 111. When the movable member 4 is in the fourth position, the fixed pin 3 can move from the first position to the second position.

[0036] It should be noted that the second end 32 of the aforementioned fixing pin 3 has a spike. The movable part 4 can be located on the left, right, or above the pushing part, etc., as long as the movement direction of the movable part 4 and the movement direction of the pushing part are at an angle to each other. The aforementioned housing is provided with a projection part for projecting laser light, and the projection part and the spike are arranged on the same side.

[0037] It is understandable that, such as Figure 3 As shown, when the second end 32 of the fixing pin 3 is located in the cavity 10 or the through hole 111, the presence of the movable part 4 can restrict the second end 32 of the fixing pin 3 from passing through the through hole 111. Therefore, even if the pushing part 2 is accidentally touched, the second end 32 of the fixing pin 3 cannot pass through the through hole 111, avoiding injury to the operator or damage to the inspection wall or object surface caused by the second end 32 of the fixing pin 3, making the laser marking instrument safer and more reliable. Figure 7 As shown, when it is necessary to make the second end 32 of the fixing pin 3 pass through the through hole 111, it is only necessary to move the movable part 4 to the fourth position. At this time, the movable part 4 releases the movement restriction on the fixing pin 3. At this time, the fixing pin 3 can move to the second position where the second end 32 passes through the through hole 111. The whole operation is convenient.

[0038] like Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the pushing member 2 includes a limiting part 21 located beside the fixing pin 3. The limiting part 21 is located within the cavity 10. In other embodiments (not shown), the limiting part 21 can be constrained by the moving member 4 to restrict the pushing member 2 from moving towards the through hole 111 until the second end 32 of the fixing pin 3 passes through the through hole 111. That is, when the pushing member 2 is pressed, it cannot move to the point where the second end 32 of the fixing pin 3 passes through the through hole 111. Schematic, the constraint method is such as a snap-fit ​​or plug-in method.

[0039] In this embodiment, such as Figures 2-7 As shown, the wall panel with the perforation 111 on the housing 1 is defined as the first wall panel 11. When the movable member 4 is in the third position, a portion of the movable member 4 is located between the limiting portion 21 and the first wall panel 11. Thus, the portion of the movable member 4 located between the limiting portion 21 and the first wall panel 11 restricts the movement of the pushing member 2 toward the perforation 111, thereby restricting the second end 32 of the fixing pin 3 from passing through the perforation 111.

[0040] Furthermore, such as Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, the movable member 4 has a protrusion 51 on the side opposite to the first wall panel 11. When the movable member 4 is in the third position, the limiting part 21 and the protrusion 51 are arranged sequentially along the first direction A, and the limiting part 21 can abut against the first surface 511 of the protrusion 51, with the first surface 511 of the protrusion 51 facing the limiting part 21. Schematic, when the movable member 4 is in the third position, the limiting part 21 abuts against the first surface 511 of the protrusion 51; or, when the movable member 4 is in the third position, there is a gap between the limiting part 21 and the first surface 511 of the protrusion 51. When the pushing member 2 drives the fixing pin 3 to move along the first direction A towards the second position under the action of pressing pressure, the limiting part 21 can move to abut against the first surface 511 of the protrusion 51. At this time, the second end 32 of the fixing pin 3 still has not penetrated through the through hole 111.

[0041] In this embodiment, such as Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the pusher 2 includes a pusher portion 22, the first end 31 of the fixing pin 3 is connected to the pusher portion 22, the housing 1 is provided with a mounting hole 121 for mounting the pusher portion 22, and a limiting portion 21 is connected to the pusher portion 22 and is at least partially located on the periphery of the pusher portion 22 to prevent the pusher portion 22 from dislodging from the mounting hole 121. In this way, the pusher 2 can be movably constrained to the housing 1 along the first direction A.

[0042] Furthermore, the aforementioned pushing part 22 is provided with an installation pipe 23 on the side facing the cavity 10. The installation pipe 23 extends along the first direction A, and the first end 31 of the fixing pin 3 is inserted into the installation pipe 23, thereby realizing the installation of the pushing part 22 and the fixing pin 3.

[0043] like Figure 3 and Figure 4 As shown, the wall panel with mounting holes 121 on the housing 1 is defined as the second wall panel 12, and the second wall panel 12 and the first wall panel 11 are arranged at intervals relative to each other along the first direction A. In this embodiment, the aforementioned movable member 4 is located on the peripheral wall 13 of the housing 1, and is located at one end of the housing 1. The peripheral wall 13 of the housing 1 is located between the first wall panel 11 and the second wall panel 12, and connects the first wall panel 11 and the second wall panel 12.

[0044] like Figure 3 and Figure 7As shown, the periphery of the mounting hole 121 extends into the cavity 10 along the first direction A to form an annular protrusion 122, and the limiting part 21 is located between the protrusion 122 and the first wall plate 11. Specifically, the protrusion 122 has a relief groove 1221 at the position corresponding to the limiting part 21. When the fixing pin 3 is in the first position, both the protrusion 51 and the limiting part 21 are located in the corresponding relief groove 1221. In addition, in other embodiments, the relief groove 1221 may not be provided, or the protrusion 122 may not be provided at all.

[0045] There are at least two limiting parts 21, and at least two limiting parts 21 are arranged at intervals along the circumference of the pushing part 22. Schematic, there may be two limiting parts 21, in which case the pushing member 2 is in a "π" shape. In addition, there may be three, four, or more limiting parts 21.

[0046] In order to enable the pusher 2 to automatically reset when the pressing pressure is removed, a second elastic element 7 is provided in the cavity 10 to act on the pusher 2. The second elastic element 7 makes the pusher 2 always tend to move along the first direction A in a direction away from the first wall plate 11 (i.e. away from the perforation 111).

[0047] Specifically, the second elastic element 7 is a second spring or a second leaf spring. In this embodiment, for example... Figure 3 and Figure 7 As shown, the second elastic member 7 is located within the space enclosed by each limiting part 21 and is sleeved around the periphery of the mounting pipe 23. Furthermore, a guide channel 112 is provided on the wall surface of the first wall plate 11 facing the cavity 10. The guide channel 112 extends along the first direction A and is located around the perforation 111. A portion of the second elastic member 7 is located within the guide channel 112. When the fixing pin 3 is in the second position, a portion of the mounting pipe 23 is located within the guide channel 112.

[0048] In other embodiments, not shown in the figures, a second elastic member 7 may be sleeved around the periphery of the pushing part 22 and abut against the limiting part 21 and the second wall plate 12.

[0049] In this embodiment, the third position is located outside the fourth position. When the movable member 4 is in the fourth position, along the second direction B, the limiting part 21 is located outside the protrusion 51. Therefore, in order for the movable member 4 to automatically reset, as... Figure 4 , Figure 5 and Figure 8As shown, a first elastic element 6 acting on the movable member 4 is also provided inside the cavity 10. The first elastic element 6 causes the movable member 4 to always have a tendency to move outward along the second direction B. Specifically, a first extension foot 52 is protruding from the side wall of the movable member 4, and a second extension foot 101 arranged opposite to the first extension foot 52 is provided inside the cavity 10. The first elastic element 6 abuts between the first extension foot 52 and the second extension foot 101, and can be a first spring or a first leaf spring.

[0050] To ensure more reliable movement of the movable part 4 along the second direction B, the movable part 4 is provided with first elastic elements 6 and first extension feet 52 on both sides arranged at relative intervals along the third direction C. The third direction C forms an angle with both the second direction B and the first direction A, and the third direction C and the second direction B are located in the same plane.

[0051] It should be noted that "forming an angle" refers to an angle of 90° or an acute angle between them. In this embodiment, for illustrative purposes, the first direction A is perpendicular to the second direction B, and the third direction C is also perpendicular to the second direction B.

[0052] Furthermore, such as Figure 4 , Figure 5 and Figure 8 As shown, the movable member 4 has a clearance opening 41 for the fixing pin 3 to pass through. The clearance opening 41 extends along the second direction B. When the fixing pin 3 is in the second position, the limiting part 21 is located inside the clearance opening 41. In the second direction B, the clearance opening 41 is located outside the protrusion 51. Specifically, when the fixing pin 3 is in the second position, the limiting part 21 abuts against the first side 411 of the clearance opening 41 near the protrusion 51, thereby restricting the movable member 4 from moving outward along the second direction B.

[0053] With the fixed pin 3 in the first position, the limiting part 21 is located on the side of the clearance opening 41 away from the first wall panel 11. Thus, the limiting part 21 is released from limiting the first side 411 of the clearance opening 41, that is, it is released from limiting the movable member 4, and the movable member 4 can move to the third position along the second direction B under the action of the first elastic member 6.

[0054] It should be noted that in other embodiments (not shown in the figure), the third position may be located inside the fourth position, with the movable member 4 in the fourth position and the limiting part 21 located inside the protrusion 51 along the second direction B. In this case, to ensure the movable member 4 automatically resets, the first elastic member 6 ensures that the movable member 4 always has a tendency to move inward along the second direction B. In this case, the first elastic member 6 is a tension spring.

[0055] The working process of the laser marking device described above is as follows:

[0056] like Figure 7As shown, when it is necessary to fix the laser marking device, it is only necessary to push the movable part 4 inward along the second direction B. At this time, the movable part 4 loses its constraint on the pushing part 2. Pushing the pushing part 2 inward causes the fixing pin 3 to move along the first direction A to the second position, that is, the second end 32 of the fixing pin 3 passes through the through hole 111. The laser marking device is fixed by inserting the second end 32 of the fixing pin 3 into the surface of the wall or the object being detected. At this time, because the limiting part 21 on the pushing part 2 abuts against the first side 411 of the clearance opening 41, the movable part 4 is restricted from moving outward along the second direction B. That is, the pushing part 2 achieves the constraint on the movable part 4, and the movable part 4 is in the fourth position.

[0057] like Figure 3 As shown, when the laser marking device needs to be removed, it is only necessary to pull the second end 32 of the fixing pin 3 out of the wall or the surface of the object being tested. At this time, the pushing member 2 drives the fixing pin 3 to move automatically away from the perforation 111 under the action of the second elastic member 7 until the fixing pin 3 moves to the first position. At this time, the limiting part 21 of the pushing member 2 disengages from the contact with the first side 411 of the clearance opening 41, that is, it loses the constraint on the moving part 4. The moving part 4 automatically moves outward along the second direction B to the third position under the action of the first elastic member 6. At this time, part of the moving part 4 is located between the limiting part 21 and the first wall plate 11 where the perforation 111 is located, which restricts the fixing pin 3 from passing through the perforation 111 along the first direction A, that is, constrains the pushing member 2 and keeps the fixing pin 3 in the first position.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A laser marking instrument, characterized in that, include: A housing having a cavity within it; A pusher is disposed in the housing and arranged to move back and forth along a first direction; A fixing pin is disposed within the cavity and extends along the first direction. The first end of the fixing pin is connected to the pushing member. The housing has a through hole at a position corresponding to the second end of the fixing pin. Under the action of the pushing member, the fixing pin moves back and forth between a first position and a second position along the first direction. When the fixing pin is in the first position, the second end is located within the cavity or the through hole. When the fixing pin is in the second position, the second end protrudes through the through hole and is located outside the housing. A movable component is disposed on the housing and is arranged to move back and forth between a third position and a fourth position along a second direction, the second direction being at an angle to the first direction. When the fixed pin is in the first position, the movable component is located in the third position, which restricts the second end from passing through the perforation. When the movable component is in the fourth position, the fixed pin can move from the first position to the second position.

2. The laser marking device according to claim 1, characterized in that, The pushing member includes a limiting part located beside the fixing pin, the limiting part being located within the cavity, and the wall plate with the perforation on the housing being defined as the first wall plate. When the movable member is in the third position, a portion of the movable member is located between the limiting part and the first wall plate.

3. The laser marking device according to claim 2, characterized in that, The pusher includes a pusher portion, the first end of the fixing pin is connected to the pusher portion, the housing has a mounting hole for mounting the pusher portion, the limiting portion is connected to the pusher portion and is at least partially located on the periphery of the pusher portion to restrict the pusher portion from dislodging from the mounting hole.

4. The laser marking device according to claim 3, characterized in that, The periphery of the mounting hole extends into the cavity along the first direction to form an annular convex wall, and the limiting part is located between the convex wall and the first wall plate.

5. The laser marking device according to claim 3, characterized in that, There are at least two limiting parts, and they are arranged at intervals along the circumference of the pushing part.

6. The laser marking device according to claim 5, characterized in that, The movable part is provided with a clearance opening for the fixing pin to pass through. The clearance opening extends along the second direction. When the fixing pin is in the second position, the limiting part is located inside the clearance opening. When the fixing pin is in the first position, the limiting part is located on the side of the clearance opening away from the first wall panel.

7. The laser marking device according to claim 2, characterized in that, The movable member has a protrusion on the side away from the first wall panel. When the movable member is in the third position, the limiting part and the protrusion are arranged sequentially along the first direction, and the limiting part can abut against the first surface of the protrusion, with the first surface of the protrusion facing the limiting part.

8. The laser marking device according to claim 7, characterized in that, The third position is located outside the fourth position. When the movable member is in the fourth position, along the second direction, the limiting portion is located outside the protrusion.

9. The laser marking device according to claim 8, characterized in that, The cavity is also provided with a first elastic element that acts on the movable part, and the first elastic element causes the movable part to always have a tendency to move outward along the second direction.

10. The laser marking device according to any one of claims 1 to 9, characterized in that, The cavity is provided with a second elastic element that acts on the pusher, and the second elastic element causes the pusher to always have a tendency to move away from the perforation along the first direction.

Images