CN101614812B - Optical axis regulating mechanism of laser ruler - Google Patents

Abstract

The invention discloses an optical axis regulating mechanism of a laser ruler, which is used on the laser ruler to regulate the laser optical axis. The optical axis regulating mechanism comprises a body bracket, a body and a regulating element, wherein the body bracket is arranged on a main body of the laser ruler and comprises a supporting plate provided with a through hole; the body is assembled on the supporting plate in a rotatable connection way and penetrates through the through hole of the supporting plate; and the body comprises a laser emission element. An acting force can be applied to the body through the regulating element, and the direction line of the acting force is in spatial non-coplanar relationship with the axis of a rotating shaft to produce a torque to enable the body bracket to rotate, thereby achieving the purpose of the regulation of the optical axis.

Description

The optical axis regulating mechanism of laser ruler

The application is that the name of on November 30th, 2004 application is called the dividing an application of No. 200410097569.0 patented claim of " optical axis regulating mechanism of laser chi ".

[technical field]

The present invention relates to a kind of optical axis regulating mechanism of laser ruler, refer in particular to a kind of optical axis regulating mechanism that is used to measure the laser ruler of distance between tested object and the observer.

[background technology]

Laser ruler is one of important equipment that is used in the modern industry measuring distance, its ultimate principle is to utilize radium-shine transmitter to send laser light to tested object, laser light is turned back by tested object reflection and is received by a radium-shine receiver, by calculating the mistiming between emission laser light and the reception laser light, multiply by 1/2nd of light velocity institute value, promptly is the distance between tested object and the radium-shine distance measuring equipment.Radium-shine distance measuring equipment based on aforementioned principles, its structure mainly is by a radium-shine transmitter, one radium-shine receiver, computing chip and display module are formed, the structure of a kind of existing radium-shine distance measuring equipment that is disclosed for No. 417783 as the novel patent announcement of TaiWan, China, its radium-shine transmitter and radium-shine receiver are orthogonal angle and arrange, on the optical axis of radium-shine transmitter the place ahead outgoing beam, prism or catoptron are set, with the tested object of directive behind the radium-shine beam reflection certain angle of outgoing, perfect condition is, the optical axis of the radium-shine light beam that turns back from the reflection of tested object with send by radium-shine transmitter and the optical axis of radium-shine light beam after the catoptron refraction is parallel to each other, the radium-shine light beam that reflection is turned back is received by radium-shine receiver, thereby obtains accurate distance values by calculating.Yet in the practice, because the distance between tested object and the radium-shine distance measuring equipment is always limited, thereby the optical axis of the radium-shine light beam that turns back from the reflection of tested object with send by radium-shine transmitter and between the optical axis of the radium-shine light beam of refraction federation have certain angle, the radium-shine light beam of desiring to make reflection to turn back can accurately be aimed at the center of radium-shine receiver, need the position and the angle of prism or catoptron are suitably regulated, perhaps the position and the angle of radium-shine transmitter are suitably regulated, make through the optical axis of the outgoing beam of prism or mirror reflects optical axis and intersect at tested object place with the radium-shine light beam that is turned back by tested object reflection.Meanwhile,, also need to adjust the optical axis of irradiating light beam and the optical axis of incident beam, the two is remained in the same space plane based on accurate Testing requirement.

The adjusting mechanism of the existing radium-shine distance measuring equipment that the novel patent announcement of aforementioned TaiWan, China discloses for No. 417783, its mainly comprise first joint portion that is arranged on the radium-shine distance measuring equipment body, be arranged at second joint portion on the radium-shine transmitter and be arranged at first joint portion and second joint portion between a pair of fixture be bolt, wherein second joint portion is gone in first joint portion with movable mode group, and is fixed by fixture.Can change the vertical and lateral attitude of second joint portion by regulating fixture according to actual measurement condition and environment whereby, thereby realize adjustment radium-shine distance measuring equipment with respect to first joint portion.Yet, this existing adjusting mechanism needs respectively to install one in the both sides of radium-shine distance measuring equipment and regulates bolt (the prior art data is shown in Figure 5 as described above), take than large space, especially gauge is bigger to cause the size of radium-shine distance measuring equipment, is not easy to portably use.And this adjusting mechanism only has the adjustment function of single direction, can not satisfy in the actual range finding application complicated and diversified condition and environment are carried out accurate Testing requirement.Therefore, be necessary to design the physical dimension of the radium-shine distance measuring equipment of a kind of favourable reduction, and can carry out the adjusting mechanism that three-dimensional is regulated, to adapt to the requirement of radium-shine distance measuring equipment microminiaturization and pinpoint accuracy operation to radium-shine distance measuring equipment.

[summary of the invention]

The object of the present invention is to provide a kind of optical axis regulating mechanism of laser ruler, to improve the shortcoming that is unfavorable for microminiaturization that existing structure exists, reduce the physical dimension of laser ruler greatly, thereby make laser ruler more can satisfy the requirement that the user carries and uses.

Another object of the present invention is to provide a kind of optical axis regulating mechanism of laser ruler, it has three-dimensional regulatory function, can guarantee that the user can be under complicated and diversified condition and environment, by to the suitable adjusting of laser ruler and the accurate measurement result of sustainable acquisition.

For realizing purpose of the present invention, the present invention proposes following technical scheme: a kind of optical axis regulating mechanism of laser ruler, be arranged on the laser ruler in order to adjust radium-shine optical axis, wherein, this laser ruler is provided with support, optical axis regulating mechanism includes body and at least one regulating element, wherein an end of body is connected on the aforementioned brackets with rotating connected mode by rotating shaft, regulating element is to be the space antarafacial with rotating shaft to separate setting, can apply an acting force to body by this regulating element, make this body be subjected to a moment and rotate with respect to support, thereby realize adjustment optical axis around aforementioned rotating shaft.

The optical axis regulating mechanism of the laser ruler that provides according to purpose of the present invention, it comprises the reception optical axis regulating mechanism, be to be installed on the laser ruler main body, this main body is provided with the main body rack of tool accepting groove, this reception optical axis regulating mechanism comprises: first body, be to be housed in the accepting groove of main body rack of laser ruler, which is provided with reflecting element so that the incident light axis direction is converted to the reception optical axis direction, and make the laser light beam to radium-shine receiving element; Second body, be with rotating connected mode winding on the main body rack of this laser ruler, but be to be one between this second body and first body with the connected mode winding that straight line moves and rotates; First regulating element is to act on this second body and can produce a moment along receiving optical axis direction, and this second body is rotated relative to the main body rack of laser ruler; Second regulating element is to act on described first body and can produce a moment along receiving optical axis direction, and described first body is rotated relative to described second body; And the 3rd regulating element, be arranged between described first body and second body, described first body is moved, to regulate the relative distance between first body and second body relative to the second body straight line.

Optical axis regulating mechanism according to the laser ruler that purpose of the present invention provided, it comprises the emission optical axis regulating mechanism, this emission optical axis regulating mechanism comprises this body support frame, body and the regulating element on the main body that is arranged on laser ruler, and wherein this body support frame comprises the back up pad that offers through hole; Body be by rotating shaft with rotating connected mode winding on the back up pad of this body support frame and pass the through hole of this back up pad, this body includes radium-shine radiated element; Regulating element can apply an acting force on this body by this regulating element, and the axis of force direction and rotating shaft is the space antarafacial and separates, and can produce a moment and this body is rotated relative to this this body support frame, thus the purpose of realization optical axis adjustment.

Compare with existing structure, the optical axis regulating mechanism of laser ruler of the present invention is realized the optical axis of laser ruler is adjusted by rotation with structures such as rotating shaft and regulating elements, has reduced the number of components, and compact conformation, helps the miniaturized design of product.Wherein, the regulating element that receives optical axis regulating mechanism all is to regulate from the same side along receiving optical axis direction, and such design proposal can effectively be saved laser ruler is regulated needed space, more helps reducing the physical dimension of laser ruler.In addition, by the adjusting of regulating element one to three, can adjust this reception optical axis regulating mechanism along about (x axle), front and back (y axle) direction deflection angle and about the relative position of (z axle) direction, thereby realize three-dimensional adjustment.

[description of drawings]

Fig. 1 is the main-body structure stereographic map of laser ruler of the present invention.

Fig. 2 is the three-dimensional exploded view of the reception optical axis regulating mechanism of laser ruler of the present invention.

Fig. 3 is the three-dimensional combination figure of the reception optical axis regulating mechanism of laser ruler of the present invention.

Fig. 4 is the three-dimensional exploded view of the emission optical axis regulating mechanism of laser ruler of the present invention.

Fig. 5 is the three-dimensional combination figure of the emission optical axis regulating mechanism of laser ruler of the present invention.

Fig. 6 is the front elevation of the main-body structure of laser ruler of the present invention, and wherein local member is cut open to show the mutual alignment relation of associated components along VI-VI line direction among Fig. 1.

[embodiment]

See also Fig. 1 and Fig. 6, shown the essential structure of the laser ruler of preferred embodiment of the present invention, it includes main body 1, comprises optical axis regulating mechanism, optical gate module 4, reflecting element 5 and the radium-shine receiver 6 etc. of the laser ruler that receives optical axis regulating mechanism 2 and emission optical axis regulating mechanism 3.Wherein this main body 1 closely is rectangular configuration, comprise first and be main body rack 10, with main body rack 10 one link to each other and size is big slightly second portion 11 and third part 12, this main body rack 10 is provided with accepting groove 101 to hold this reception optical axis regulating mechanism 2, and the position near main body rack 10 rear end faces offers a groove 103 respectively on the first side wall 102 of this accepting groove 101, second sidewall 104, and wherein seat groove 103 both sides of this first side wall 102 respectively are provided with axis hole 105.

Please cooperate and consult Fig. 2, this reception optical axis regulating mechanism 2 mainly comprises body and regulating element, specifically, this body comprises first body 20 and second body 21, these first body, 20 nearly rectangular trapezoidal blocks wherein, has inclined-plane 201 so that reflecting element 5 (as shown in Figure 6) to be installed, long limit one side of this first body 20 offers the groove 202 that runs through the rear and front end face along longitudinally, offers two axis holes 204 that run through two side 203 respectively near approximately centre position, the two side 203 of this groove 202.This second body 21 has a girder 211, and the place, centre position of this girder 211 has screw 2110, and the one end is connected with and the perpendicular crossbeam 212 of this girder 211 bearing of trends then integrally formed first locating piece 213 of the other end.The first end 2121 of this crossbeam 212 is closely to be square columnar structure, is provided with the bearing of trend that is parallel to girder 211 and runs through the axis hole 2123 of first end 2121, and the second end 2122 of crossbeam 212 then is provided with and runs through its screw 2124 of both sides up and down.Offer a depression 2125 downwards at place, crossbeam 212 centre positions, and the further downward one in these depression 2125 belows is extended second locating piece 214 certainly, which is provided with the screw 2140 that is parallel to aforementioned depression 2125 and runs through second locating piece, 214 upper and lower end faces.In addition, the receiving space 215 that the screw 2110 of formation one and aforementioned girder 211 connects between first locating piece 213, crossbeam 212 and second locating piece, 214 threes is to be housed in web member 22 wherein.This web member 22 is the column configuration substantially, and its end face offers the screw 2110 corresponding screws 221 with aforementioned girder 211, the axis hole 222 of both sides before and after its below then is provided with and connects.

Please with further reference to Fig. 2 and Fig. 3, pass the screw 2110 of girder 211 and can further enter in the screw 221 of this web member 22 as the bolt 23 of one of regulating element, web member 22 is fixed on second body 21, then make the latter half of web member 22 insert groove 202 centre positions of first body 20, make its axis hole 222 corresponding with the axis hole 204 of first body 20, again axis hole 204 is passed in rotating shaft 29,222 and first body 20 is connected to this web member 22, thereby make this first body 20, second body 21 connects as one by web member 22, and can adjust relative distance between this first body 20 and second body 21 by regulating this bolt 23.Another regulating element is that 25 groups of bolt are gone into screw 2140, its terminal basal surface 205 that protrudes the bottom side of second locating piece 214 and be resisted against the groove 202 of first body 20.By the length that the end of regulating this bolt 25 protrudes, this first body 20 is rotated and the adjustment of realization fore-and-aft direction around aforementioned rotating shaft 29.In addition, first locating piece 213 stretches in the groove 202 and swings along left and right directions (x axle) to limit first body, 20 relative second bodies 21.Spring 26 is installed in first locating piece, 213 bottom sides, and its two ends are resisted against the basal surface 205 of this first locating piece 213 and groove 202 respectively, so that elastic-restoring force to be provided.Fig. 3 promptly shows the reception optical axis regulating mechanism 2 that an assembling is finished.

The first end 2121 of the crossbeam 212 of reception optical axis regulating mechanism 2 as shown in Figure 3 and the second end 2122 are assembled in respectively in the sidewall 102,104 of main body rack 10 as shown in Figure 1, wherein first end 2121 insert this main body rack 10 the first side wall 102 the seat groove 103 in, and pass the axis hole 105 of the first side wall 102 and the axis hole 2123 of first end 2121, and second body 21 can be installed on the main body 1 with rotating connected mode by rotating shaft 28.Fig. 1 and shown in Figure 6 and for example, the screw 2124 that bolt 24 passes crossbeam 212 the second ends 2122 of second body 21 is gone forward side by side in the first side wall 104 of main body rack 10, and is provided with an elastic washer 27 so that the flexible adjustment space to be provided between second sidewall 104 of this second body 21 and main body rack 10.It is pointed out that the bolt 24 as one of regulating element, is to be the space antarafacial with aforementioned rotating shaft 28 (axis direction) to separate and be provided with, and in specific embodiment, the axis of the axis of this bolt 24 and rotating shaft 28 is antarafacial vertical relations, and the two is non-intersect.Whereby, apply an acting force by adjusting bolt 24 and on the adjusting mechanism body, produce a moment, thereby this physical efficiency of adjusting mechanism of being made up of second body 21 and first body 20 28 is rotated around the shaft with respect to main body rack 10, thereby realize the adjustment in orientation, the left and right sides.

See also Fig. 4 again, emission optical axis regulating mechanism 3 comprises radiated element body 30, this body support frame 31, connects body 32, first regulating element such as bolt 34 and spring 38, second regulating element such as bolt 35, the 3rd regulating element such as bolt 36 and the 4th regulating element such as bolt 37.Wherein, radiated element body 30 is cylindrical, and its inside contains for example laser diode (not shown) of radium-shine light source, and this radiated element body 30 is to be installed on this body support frame 31 by connecting body 32.This this body support frame 31 comprises a pair of first and second bottom girder 311,312 of square bar shaped that is parallel to each other and extends, and the square back up pad 310 that is vertically connected at bottom girder 311,312 centre positions, these back up pad 310 medium positions offer and aforementioned radiated element body 30 big or small corresponding through holes 3101, and stretch out in through hole 3101 top positions and to protrude an axis part 3102, and this axis part 3102 further is provided with axis hole 3103.The two ends of first and second bottom girder 311,312 are respectively equipped with screw 3111,3112 and 3121.Connect the abutment ring 321 that body 32 comprises a square shape base portion 320 and links to each other with the bottom one of this base portion 320, the internal diameter of this abutment ring 321 conforms to radiated element body 30 external diameters and is corresponding with through hole 3101 internal diameter sizes, to accommodate and to fix this radiated element body 30.Extend a Fixed Division 322 with U-shaped breach 323 from a side of base portion 320, in addition, further be provided with the axis hole 324 that connects base portion 320 along fore-and-aft direction on the base portion 320.

As shown in Figure 4, one end of radiated element body 30 penetrates in the abutment ring 321 that connects body 32, its other end then penetrates in the through hole 3101 of back up pad 310, then the end with rotating shaft 33 passes the axis hole 324 that connects body 32, the other end inserts the axis hole 3103 of back up pad 310, thereby this radiated element body 30 is connected as one with this body support frame 31.In addition, spring 38 is enclosed within on the bolt 34, and pass the breach 323 that connects body 32 and match with screw 3111 on the bottom girder 311 of this body support frame 31, simultaneously each bolt 35,36 and 37 also respectively with the bottom girder 311,312 of this body support frame 31 on corresponding screw 3121,3112 cooperatively interact.Emission optical axis regulating mechanism 3 as shown in Figure 5 after assembling was finished.

Emission optical axis regulating mechanism 3 shown in Figure 5 is assembled on the second portion 11 of main body shown in Figure 11, and elastic washer 39 is set respectively so that elasticity adjustment space to be provided.Should be noted in the discussion above that the bolt 34 as one of first regulating element, is to be the space antarafacial with rotating shaft 33 (axis direction) to separate and be provided with, and in specific embodiment, the axis of the axis of this bolt 34 and rotating shaft 33 is antarafacial vertical relations, and the two is non-intersect.Whereby, by adjusting bolt 34, and cooperate spring 38, can apply an acting force on this connection body 32, make to connect body 32 and radiated element body 30 33 rotations around the shaft, and corresponding adjusting bolt 35, thereby realization is to the adjustment of the optical axis direction of this emission optical axis regulating mechanism 3.Then can adjust by regulating bolt 36,37 initial position of the axis of radiated element body 30.

As seen from the above description, the laser ruler optical axis regulating mechanism that receives optical axis regulating mechanism 2 and emission optical axis regulating mechanism 3 that comprises provided by the present invention, its characteristics are that mainly the main body 1 of laser ruler is provided with support (comprising main body rack 10 and this body support frame 31), the body of optical axis regulating mechanism 2,3 (second body 21, connect body 32 and radiated element body 30) with rotating connected mode winding on support, apply acting force by regulating element and make of the main body rotation of the body of optical axis regulating mechanism, thereby reach the purpose of adjusting optical axis with respect to laser ruler.Specifically, please refer to Fig. 1 and Fig. 3, by adjusting, can adjust position and the distance of first body 20 of reception optical axis regulating mechanism 2, thereby realize the adjustment in orientation (z axle) up and down with respect to second body 21 to bolt 23.By adjusting to bolt 24, can make 28 rotations around the shaft of second body 21 and first body, 20 integral body, can realize adjustment to orientation, optical axis regulating mechanism 2 left and right sides (X-axis) deflection angle.And, can make first body 20,29 rotations around the shaft of adjusting mechanism 2, thereby realize the adjustment of front and back position (y axle) deflection angle by to the adjusting of bolt 25 and the elastic reaction of cooperation spring 26.By means of this adjusting mechanism, can adjust the position and the angle of reflecting element 5 according to different condition and environment, make the radium-shine light beam of incident accurately be reflexed to radium-shine receiving element 6 (Fig. 6 demonstration).What need particularly point out is that the present invention adopts bolt 24,25 to cooperate the structure of rotating shaft 28,29, adjusts by rotation mode, compare existing structure and reduced bolt quantity, thereby the profile that can reduce laser ruler has size, helps the miniaturized design of product.And, bolt 23,24 and 25 as regulating element, all be to regulate along direction that is reception optical axis direction (z axle) that incident beam is reflected, that is, these bolts are to be positioned on the orientation, the same side of laser ruler, such design proposal can effectively be saved the optical axis regulating mechanism of laser ruler is adjusted needed space, more helps reducing the physical dimension of laser ruler.

Claims (8)

1. the optical axis regulating mechanism of a laser ruler, be arranged on the main body of laser ruler to adjust radium-shine emission optical axis, it is characterized in that: this optical axis regulating mechanism comprises this body support frame, body and first regulating element, wherein this body support frame is arranged on the main body of laser ruler, and it comprises the back up pad that offers through hole; Body be by rotating shaft with rotating connected mode winding on described back up pad and pass the through hole of back up pad, this body includes radium-shine radiated element; Can apply an acting force on described body by described first regulating element, and the force direction line is that axis with described rotating shaft is space antarafacial relation, can produces a moment and make this body support frame rotation relatively of described body.

2. the optical axis regulating mechanism of laser ruler as claimed in claim 1 is characterized in that: described body comprises and connects body and the inner radiated element body that is provided with radium-shine light source, and this radiated element body is cylindrical and be installed on this body support frame by connecting body.

3. the optical axis regulating mechanism of laser ruler as claimed in claim 2 is characterized in that: the abutment ring that described connection body comprises a block base portion and links to each other with this base portion one, described radiated element body is to be retained in this abutment ring.

4. the optical axis regulating mechanism of laser ruler as claimed in claim 3, it is characterized in that: the axis part of the back up pad of described body support frame is provided with the axis hole perpendicular to back up pad, the base portion correspondence that connects body is provided with the axis hole of perforation, and a rotating shaft is passed described axis hole and will be connected body and be connected to this body support frame.

5. the optical axis regulating mechanism of laser ruler as claimed in claim 4 is characterized in that: base portion one side of described connection body is extended a Fixed Division with U-shaped breach.

6. the optical axis regulating mechanism of laser ruler as claimed in claim 5, it is characterized in that: described first regulating element is a bolt that passes spring, this bolt is screwed in the main body of laser ruler by the U-shaped breach of described connection body, makes this body support frame rotation relatively of connection body by regulating this bolt.

7. the optical axis regulating mechanism of laser ruler as claimed in claim 1, it is characterized in that: more comprise one second regulating element, described second regulating element is a bolt, thus the described bolt of corresponding adjusting is realized the adjustment to the optical axis direction of described optical axis regulating mechanism.

8. the optical axis regulating mechanism of laser ruler as claimed in claim 1, it is characterized in that: more comprise one the 3rd regulating element and one the 4th regulating element, described the 3rd regulating element and described the 4th regulating element are respectively a bolt, by regulating these bolts the initial position of the axis of described body are adjusted.

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