WO2005121702A1 - Laser de type combine - Google Patents

Laser de type combine Download PDF

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Publication number
WO2005121702A1
WO2005121702A1 PCT/CN2005/000835 CN2005000835W WO2005121702A1 WO 2005121702 A1 WO2005121702 A1 WO 2005121702A1 CN 2005000835 W CN2005000835 W CN 2005000835W WO 2005121702 A1 WO2005121702 A1 WO 2005121702A1
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WO
WIPO (PCT)
Prior art keywords
laser
mating
box
combined
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2005/000835
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English (en)
French (fr)
Inventor
Xuhui Mai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Positec Power Tools Suzhou Co Ltd
Original Assignee
Positec Power Tools Suzhou Co Ltd
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Filing date
Publication date
Application filed by Positec Power Tools Suzhou Co Ltd filed Critical Positec Power Tools Suzhou Co Ltd
Publication of WO2005121702A1 publication Critical patent/WO2005121702A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/02—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/002—Active optical surveying means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/23—Arrangements of two or more lasers not provided for in groups H01S3/02 - H01S3/22, e.g. tandem arrangements of separate active media
    • H01S3/2383—Parallel arrangements

Definitions

  • the utility model relates to a combined laser, in particular to a combined laser used for assisting machining operations of electric tools.
  • the purpose of the utility model is to provide a combined laser, which can form a grid pattern to facilitate the operation of precise positioning processing of a power tool on a processing object.
  • a combined laser including a first laser box, a second laser box, and a connection mechanism, wherein the laser box is provided with a plurality of lasers capable of emitting laser light upon being connected, and the connection mechanisms are respectively It is connected to the first laser box and the second laser box, and the first laser box is arranged at an angle relative to the second laser box.
  • the combined laser of the present utility model can be emitted above the surface of the processing part of the processing object of the power tool by using its own laser to emit electricity.
  • the laser light forms a grid-like reference line, so that the power tool can perform an accurate positioning processing operation on the object according to the grid-like reference line. Since the grid-like reference line is formed above the processing surface, the use of the combined laser of the present invention is not limited by the surface condition of the processing part of the processing object. In addition, due to the nature of the laser, it will not have any adverse effect on the processed object, nor will it affect the machining operation of the power tool during the processing.
  • FIG. 1 is an exploded view of the combined laser of the present invention.
  • FIG. 2 is an assembly schematic diagram of the combined laser of the present invention, which does not show conductive lines.
  • FIG. 3 is a schematic diagram of the combined laser of the present invention from another angle, which does not show conductive wires.
  • FIG. 4 is a top view of the combined laser of the present invention, which does not show the cover of the connection mechanism and a cover of the laser box.
  • the present utility model includes a connection mechanism 1, two laser boxes 2, a plurality of lasers 3, slide bars 4, a rotary scale 5, a base 6 and a mating mechanism 7 respectively housed in the two laser boxes 2. .
  • the connecting mechanism 1 includes a frame body 10 and a cover body 11. Through holes 112 are formed on two adjacent side walls 111 of the frame body 10 for mating with the slide bar 4.
  • the frame 10 contains a battery 12, a plurality of conductive wires 13 and a power switch 14.
  • the battery 12 and the conductive wires 13 may form a closed circuit and the power switch 14 controls the circuit to be turned on or off.
  • the laser box 2 includes a box body 20 and a cover body 21, and a guide groove 22 is provided on a bottom wall 201 of the box body 20.
  • a plurality of receiving bases 23 for receiving the laser 3 are fitted in the guide grooves 22.
  • the receiving bases 23 can slide in the guide grooves 22.
  • the edges of the guide grooves 22 can also be provided with scales (not shown) to facilitate adjustment of different receiving bases 23. the distance between.
  • a plurality of lasers 3 are respectively housed in the accommodating base 23, and they can emit power by the battery 12 through the conductive wire 13.
  • the slide bar 4 has a longitudinally long plate-like configuration, and includes a connecting portion 41 and a base portion 42. On the two opposite outer surfaces of the base portion 42, first first portions for matching with the side wall 202 of the box body of the laser box 2 are formed, respectively.
  • the rotating scale 5 includes a rotating fixed plate 51 and a scale 52, wherein the scale 52 can be received in the second receiving slot 422.
  • the base 6 includes a rod body 61 and a base body 62, and the rod body 61 is connected to the base body 62.
  • the mating mechanism 7 includes a first mating portion 71 for mating with the frame body 10 of the coupling mechanism 1 and a second mating portion 72 for mating with the rod 61 of the base 6, wherein the first mating portion 71
  • the mating method is spherical mating.
  • the mating portion 41 of the slider 4 is rotatably mated to the frame 10 of the connecting mechanism 1.
  • the bearing device includes a bearing 15 and a bearing pressure plate 16, wherein the bearing pressure plate 16 is fitted into the connecting mechanism frame 10 by screws 18, the bearing 15 is connected to the bearing pressure plate 16, and the connecting portion 41 of the slide bar 4 is worn It enters the connecting mechanism frame 10 through the through hole 112, and is connected to the bearing 15 through the connecting fork 17, and the screw 182, so that the slide bar 4 can rotate by itself.
  • the laser box case 20 is mounted on the slide bar 4 through the matching of the side wall 202 and the first receiving slot 421, and can slide in the direction in which the first receiving slot 421 extends.
  • the rotation fixing plate 51 is mounted on the connection mechanism frame 10 by screws 184 (the rotation fixing plate 51 can also be mounted on the connection mechanism frame 10 by other methods known in the industry, such as riveting, glue bonding, etc.), and the ruler 52 is accommodated in the second accommodation groove 422, and the scale 52 and the rotation fixing plate 51 are connected together by screws 186 and knobs 19.
  • connection mechanism frame body 10 is mated with the first mating portion 71 of the mating mechanism 7 by screws 188, and the second mating portion 72 of the mating mechanism 7 is mated with the lever 61 of the base 6 by a knob 192 on.
  • the mating method of the first mating portion 71 of the mating mechanism 7 is a spherical mating method, please refer to FIG. 3.
  • the frame body 10 can rotate with respect to the rod body 61 in a certain angular range.
  • the height of the connecting mechanism 1 relative to the base seat body 62 can be achieved by self-adjustment of the base rod body 61 ⁇ or the position of the second mating portion 72 on the base rod body 61. In this embodiment, it is through a knob 192 This is achieved by changing the position of the second mating portion 72 on the base rod body 61.
  • the laser 3 is powered by a battery 12 provided in the connection mechanism 1. For the circuit connection method, see FIG. 4.
  • the object of the present invention can also be achieved in a relatively simplified manner, for example, in On the basis of the above embodiment, the slide bar 4, the bearing device and the corresponding structure provided on the connecting mechanism frame body 10 are removed, and a rotary mating mechanism, such as the aforementioned coupling mechanism 7, is added, so that the laser box body 20 directly It is mounted on the frame 10 of the connection mechanism in a rotating manner, and the scale 52 of the rotating scale 5 is directly connected to the laser box body 20, and the matching relationships between other components are unchanged. Comparing this embodiment with the previous embodiment, since the structure is not changed much, the drawings are not provided in the drawings.
  • the above-disclosed embodiments all set the power source device of the combined laser to power the laser, but for the purpose of the invention of the present invention, it can also use an external power source to power the laser.
  • an external power source for example, based on the above-mentioned implementation of the built-in power supply, the battery and the corresponding structural arrangement in the connection mechanism are removed, a plug structure or a similar connector structure is provided, and the conductive wire of the laser is connected to it.
  • the implementation of the peripheral power supply is not provided in the drawings.
  • the included angle between the two laser boxes is fixed, but by drawing on the conventional compass structure, the included angle between the two legs of the compass is adjustable, and the adopted structure is completely applicable. It is adopted by this embodiment, so that the included angle between the two laser boxes is also adjustable. Since this structure is a known technology, it is not provided in the drawings. The present invention can also make the included angle between the two laser boxes adjustable by other methods, which will not be exemplified here.
  • the lasers used in this field emit a planar laser beam with a certain angle instead of a laser line after being energized (usually a fan-shaped planar laser beam of 90 degrees to 120 degrees). Therefore, after the plurality of parallel-set lasers housed in the same laser box are energized, they emit a plurality of plane laser beams which are parallel to each other, and further, the lasers in the two laser boxes disposed at a certain angle are emitted after being energized.
  • the plane laser beams cross each other. When encountering a block (to be processed), a grid-like projection is formed on the block.
  • the included angle between the two laser boxes is adjustable, and each laser box is rotatably connected to the connecting mechanism, the cross angle between the cross-plane laser beams emitted by the laser can be adjusted as required. of.
  • the combined laser of the utility model can form a grid-like reference line above the surface of a processing part of a machining object of a power tool by using its own laser to emit electricity, so that the power tool can perform the object based on the grid-like reference line. Accurately locate machining operations. Since the grid-like reference line is formed above the processing surface, the use of the combined laser of the present invention is not limited by the surface condition of the processing part of the processing object. In addition, due to the nature of the laser, it will not have any adverse effects on the processed object, nor will it affect the machining operation of the power tool during processing.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Lasers (AREA)

Description

组合式激光器 技术领域
本实用新型涉及一种组合式激光器， 尤指一种用于辅助电动工具加工作业 的组合式激光器。
背景技术
随着电动工具的功能越来越强大， 其应用范围已越来越广泛， 其可加工的 对象也越来越多。 由于有时人们需要对加工对象进行精确的定位加工作业以得 到特定的加工结果， 这就需要使用测量工具的辅助。 但使用传统的测量工具对 加工对象进行具体的位置标识则需要加工对象的加工部位的外表面为规则表 面， 这样， 传统的测量工具如刻度尺、 丁字尺等等才能在加工对象的加工部位 的外表面上定位以进行测量标识作业。 但如此操作， 其步骤较多、 工作效率较 低。 而且若加工对象的加工部位的外表面为非规则表面即其表面存在高低不平 或曲率变化过大等状况时， 使用传统的测量工具如刻度尺、 丁字尺等等则不能 对加工对象直接进行具体的位置标识， 而需要另外的辅助工具先对其自身进行 定位后， 才能进行后续对加工对象的标识作业。 如此操作， 则步骤更多、 工作 效率更低， 且还需另外的定位辅助工具， 不利于电动工具进行高效率的加工作 业。 综上所述， 使用传统的测量工具如刻度尺、 丁字尺等等辅助电动工具对其 加工对象进行精确加工作业时， 存在受加工对象自身条件限制大、 操作步骤多、 工作效率低等缺陷。
因此， 确有必要提供一种可形成格线图案的工具， 以辅助电动工具在加工 对象上进行精确定位加工作业。
发明内容
本实用新型的目的在于提供一种组合式激光器， 其可形成格线图案以方便 电动工具在加工对象上进行精确定位加工的作业。
本实用新型的目的是这样实现的： 一种组合式激光器， 其包括有第一激光 器盒、 第二激光器盒及连接机构， 其中， 激光器盒内设置有若干通电可发射激 光的激光器， 连接机构分别与第一激光器盒及第二激光器盒连接， 第一激光器 盒相对于第二激光器盒呈一定角度设置。
与现有技术相比， 本实用新型的有益效果是： 本实用新型组合式激光器可 在电动工具的加工物体的加工部位的表面上方， 利用其自身激光器通电发射出 的激光形成网格状基准线， 使得电动工具可根据网格状基准线对该物体迸行精 确的定位加工作业。 由于网格状基准线形成于加工表面上方， 本实用新型组合 式激光器的使用不会受到加工物体加工部位表面状况的限制。 另外， 由于激光 的本身特性， 其不会对加工物体产生任何不良影响， 也不会在加工过程中影响 电动工具的加工作业。
附图说明
下面结合附图和具体实施方式对本实用新型作进一步说明。
图 1是本实用新型组合式激光器的分解示意图。
图 2是本实用新型组合式激光器的组合示意图， 其未显示导电线。
图 3 是本实用新型组合式激光器的另一角度的组合示意图， 其未显示导电 线。
图 4 是本实用新型组合式激光器的的俯视图， 其未显示连接机构盖体及一 激光器盒盖体。
其中：
1连接机构 10框体 11盖体 111侧壁 112通孔
12电池 13导电线 14电源开关 15轴承 16轴承压板
17连接叉 18、 182、 184、 186、 188螺钉 19、 192旋纽
2激光器盒 20盒体 21盖体 22引导槽 23收容座 201底壁 202侧壁
3激光器
4滑杆 41配接部 42基部 421第一收容槽 422第二收容槽
5旋转标尺 51旋转固定板 52标尺
6底座 61杆体 62座体
7配接机构 71第一配接部 72第二配接部
具体实施方式
请参阅图 1所示， 本实用新型包括有连接机构 1、 两个激光器盒 2、 若干 分别收容于两激光器盒 2 内的激光器 3、 滑杆 4、 旋转标尺 5、 底座 6及配接 机构 7。
连接机构 1包括有框体 10及盖体 11， 于框体 10两相邻的侧壁 111上形 成有用于与滑杆 4配接的通孔 112。 框体 10内收容有电池 12、 若干导电线 13 及电源开关 14， 电池 12及导电线 13可组成封闭电路并由电源开关 14控制电 路接通或断开。 激光器盒 2包括有盒体 20及盖体 21， 于盒体 20的底壁 201上设置有引 导槽 22。 若干用于收容激光器 3的收容座 23配接于引导槽 22内， 收容座 23 可在引导槽 22内滑动， 引导槽 22的边沿也可设置刻度 （未图示） 以便于调整 不同收容座 23之间的距离。若干激光器 3分别收容于收容座 23内， 其可通过 导电线 13由电池 12供电发射激光。
滑杆 4呈纵长板状构形， 其包括有配接部 41及基部 42， 于基部 42的相 对两外表面上分别形成有用于与激光器盒 2的盒体侧壁 202配接的第一收容槽 421及第二收容槽 422。 旋转标尺 5包括有旋转固定板 51、 标尺 52 , 其中标尺 52可收容于第二收容槽 422内。 底座 6包括有杆体 61及座体 62， 杆体 61配 接于座体 62上。配接机构 7包括有用于与连接机构 1的框体 10配接的第一配 接部 71及用于与底座 6的杆体 61配接的第二配接部 72， 其中第一配接部 71 的配接方式为球面配接方式。
请参阅图 2所示， 组装时， 滑杆 4的配接部 41为可旋转的配接于连接机 构 1的框体 10上，在本实施方式中其为：于连接机构框体 10内设置轴承装置， 轴承装置包括有轴承 15及轴承压板 16， 其中轴承压板 16通过螺钉 18配接于 连接机构框体 10内， 轴承 15配接于轴承压板 16上， 滑杆 4的配接部 41穿过 通孔 112进入连接机构框体 10 内， 通过连接叉 17、 螺钉 182配接于轴承 15 上，滑杆 4可以自身转动。激光器盒盒体 20通过其侧壁 202与第一收容槽 421 的配接安装于滑杆 4 上， 并可沿第一收容槽 421 延伸的方向滑动。 通过螺钉 184将旋转固定板 51安装于连接机构框体 10上 （旋转固定板 51也可通过业 界所习知的其他方式如铆接、胶水粘连等方式安装于连接机构框体 10上），将 标尺 52收容于第二收容槽 422内， 通过螺钉 186及旋纽 19将标尺 52与旋转 固定板 51配接于一起。通过螺钉 188将连接机构框体 10与配接机构 7的第一 配接部 71配接于一起，通过旋纽 192将配接机构 7的第二配接部 72配接于底 座 6的杆体 61上。由于配接机构 7的第一配接部 71的配接方式为球面配接方 式， 请参阅图 3所示， 框体 10可相对于杆体 61进行一定角度范围的旋转。 连 接机构 1相对于底座座体 62的高度可通过底座杆体 61髙度的自行调节或第二 配接部 72于底座杆体 61上的位置调节来实现，在本实施方式中其为通过旋纽 192使第二配接部 72于底座杆体 61上的位置变换来实现。 激光器 3由设置于 连接机构 1内的电池 12供电， 其电路连接方式请参阅图 4所示。
本实用新型的发明目的也可以采用一种相对简化的方式实现， 例如， 在 上述实施方式的基础上去除滑杆 4、 轴承装置及设置于连接机构框体 10上相 对应的结构， 增设一种旋转配接机构， 例如前述配接机构 7， 使得激光器盒盒 体 20直接以旋转的方式安装于连接机构框体 10上， 旋转标尺 5的标尺 52直 接配接于激光器盒盒体 20上， 其他各组成元件间的配接关系不变。 此种实施 方式与上一实施方式比较而言， 由于结构变化不大， 因此， 不在附图中提供图 不表不。
以上所揭示的实施方式均为组合式激光器自身设置电源装置为激光器供 电， 但对于本实用新型的发明目的而言， 其也可以采用外接电源方式为激光器 供电。 例如， 以上述内设电源的实施方式为基础， 去除连接机构内的电池及相 应结构设置， 设置一插头结构或类似接插件结构， 将激光器的导电线与其相接 即可。 与上述内设电源的实施方式比较而言， 由于结构变化不大， 电路设计简 单， 因此， 外设电源的实施方式就不在附图中提供图示表示。
在上述所揭示的实施方式中.两激光器盒之间的夹角是固定的， 但通过借 鉴习知的圆规结构， 圆规的两脚间的夹角是可调的， 其所采用的结构完全可被 本实施方式采用， 从而使得两激光器盒间的夹角也是可调的， 由于该结构为习 知技术， 因此不在附图中提供图示表示。本实用新型也可通过其他方式使得两 激光器盒间的夹角可调，此处不再举例说明。
本领域一般技术人员可知， 本领域所用激光器在通电后发射出的并非为 激光线而是具有一定角度的平面激光束 （通常为 90度至 120度的扇形平面激 光束）。由此，上述收容于同一激光器盒内的若干平行设置的激光器在通电后， 发射出若干相互平行的平面激光束，进而上述按一定角度设置的两激光器盒内 的激光器在通电后， 发射出的平面激光束则相互交叉， 遇到阻挡 （待加工物） 时， 则会在阻挡物上形成网格状投影。 另外， 由于两激光器盒间的夹角可调， 且每一激光器盒均为可旋转的配接于连接机构上，所以由激光器发射出的交叉 平面激光束间的交叉角度是可根据需要可调的。
本实用新型组合式激光器可在电动工具的加工物体的加工部位的表面上 方， 利用其自身激光器通电发射出的激光形成网格状基准线， 使得电动工具可 根据网格状基准线对该物体进行精确的定位加工作业。由于网格状基准线形成 于加工表面上方，本实用新型组合式激光器的使用不会受到加工物体加工部位 表面状况的限制。 另外， 由于激光的本身特性， 其不会对加工物体产生任何不 良影响， 也不会在加工过程中影响电动工具的加工作业。

Claims

权利要求：
1、 一种组合式激光器， 其包括有第一激光器盒及第二激光器盒， 其中， 所 述第一、 第二激光器盒内分别收容有至少一个通电可发射平面激光束的激光器； 其特征在于： 其还包括有连接机构， 所述连接机构分别与所述第一激光器盒及 第二激光器盒连接， 所述第一激光器盒相对于所述第二激光器盒呈一定角度设 置； 通电后， 位于第一激光器盒内的激光器发射出的平面激光束与位于第二激 光器盒内的激光器发射出的平面激光束相互交叉。
2、 根据权利要求 1所述的组合式激光器， 其特征在于： 其还包括有滑杆， 所述滑杆为可旋转配接于所述连接机构上， 所述激光器盒配接于滑杆上并可沿 滑杆延伸的方向移动。
3、 根据权利要求 2所述的组合式激光器， 其特征在于： 所述连接机构内设 置有轴承装置， 所述轴承装置包括有轴承， 所述滑杆与所述轴承配接并可自身 旋转。
4、 根据权利要求 1所述的组合式激光器， 其特征在于： 其还包括有旋转标 尺， 所述旋转标尺包括有旋转固定板及标尺， 所述旋转固定板配接于所述连接 机构上。
5、 根据权利要求 1所述的组合式激光器， 其特征在于： 其还包括有底座， 所述底座包括有杆体及座体， 所述连接机构配接于所述底座杆体上。
6、 根据权利要求 5所述的组合式激光器， 其特征在于： 其还包括有配接机 构， 所述配接机构包括第一配接部及第二配接部， 其中所述第一配接部的配接 方式为球面配接方式； 所述连接机构与所述配接机构的第一配接部配接， 所述 底座杆体与所述配接机构的第二配接部配接。
7、 根据权利要求 1所述的组合式激光器， 其特征在于： 所述激光器盒内设 置有槽道， 所述激光器可在槽道内滑动。
8、 根据权利要求 1所述的组合式激光器， 其特征在于： 所述激光器盒为可 旋转的安装于所述连接机构上。
9、 根据权利要求 1所述的组合式激光器， 其特征在于： 所述第一、 第二激 光器盒的相互位置间夹角角度可以调整。
10、 根据权利要求 1所述的组合式激光器， 其特征在于： 其还包括有用于 为所述激光器供电的电源装置。
PCT/CN2005/000835 2004-06-14 2005-06-13 Laser de type combine Ceased WO2005121702A1 (fr)

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CNU2004200280057U CN2715909Y (zh) 2004-06-14 2004-06-14 组合式激光器
CN200420028005.7 2004-06-14

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WO2005121702A1 true WO2005121702A1 (fr) 2005-12-22

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11201753A (ja) * 1998-01-19 1999-07-30 Yanmar Diesel Engine Co Ltd 墨出し用レーザ基準の設定方法及び装置
CN2341122Y (zh) * 1998-08-12 1999-09-29 潘保青 激光定位仪
CN2374844Y (zh) * 1999-06-07 2000-04-19 陈年生 激光直角投线仪
CN2430668Y (zh) * 2000-08-02 2001-05-16 李曙英 磁性关节水平线高度可调的万用激光垂准水平仪
JP2001255149A (ja) * 2000-03-10 2001-09-21 Matsushita Electric Works Ltd レーザー墨出し器
US20040107588A1 (en) * 2002-12-06 2004-06-10 Jian-Hua Pu Laser meter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11201753A (ja) * 1998-01-19 1999-07-30 Yanmar Diesel Engine Co Ltd 墨出し用レーザ基準の設定方法及び装置
CN2341122Y (zh) * 1998-08-12 1999-09-29 潘保青 激光定位仪
CN2374844Y (zh) * 1999-06-07 2000-04-19 陈年生 激光直角投线仪
JP2001255149A (ja) * 2000-03-10 2001-09-21 Matsushita Electric Works Ltd レーザー墨出し器
CN2430668Y (zh) * 2000-08-02 2001-05-16 李曙英 磁性关节水平线高度可调的万用激光垂准水平仪
US20040107588A1 (en) * 2002-12-06 2004-06-10 Jian-Hua Pu Laser meter

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