JP7073142B2 - Surveying instrument - Google Patents

Description

The present invention relates to a surveying instrument, particularly a surveying instrument aimed at improving the rigidity of a display unit and preventing a decrease in surveying accuracy.

The surveying instrument has a leveling part, a base part fixed to the leveling part, a U-shaped support part provided on the base part so as to be horizontally rotatable around the vertical axis, and a support part around the horizontal axis. It is generally composed of a telescope held so as to be vertically rotatable, and a display unit for displaying a survey result, a state, or the like is generally provided on the front surface of the support column (for example, Patent Document 1).

JP-A-2017-101937

When such a surveying instrument is taken out from the housed case, it is often seen that the display portion protruding to the front is grabbed and taken out. However, in that case, there is a concern that the survey may be adversely affected, for example, the display unit may not be able to withstand the load and the display unit may be distorted, or the support column portion provided with the worst display unit may also be distorted.

In view of such circumstances, it is an object of the present invention to provide a surveying instrument in which the rigidity of the display unit is improved and the measurement accuracy is prevented from deteriorating.

In order to achieve the above object, the surveying instrument of one aspect of the present invention includes a U-shaped strut portion that holds the telescope vertically rotatable, and a display portion provided on the front surface of the strut portion. On the back surface of the display unit, a metal auxiliary member that covers the back surface of the display unit and is fixed to the support column portion is provided.

According to this aspect, when an attempt is made to turn the hand toward the back surface of the display unit in order to hold the surveying instrument, the auxiliary member fixed to the support column portion is gripped, and the load applied to the display unit can be reduced.

Preferably, the auxiliary member is provided with a through hole, and the auxiliary member is fastened and fixed together with the display portion to the support portion through the through hole. According to this aspect, the auxiliary member is only added to the conventional configuration, and the auxiliary member can be fixed to the support member without changing the design of the support column portion and the display portion.

Preferably, the display unit is fixed to the auxiliary member, and the auxiliary member is fixed to the support column portion. According to this aspect, since the metal auxiliary member is directly fixed to the support column portion, it can be firmly fixed.

Preferably, the auxiliary member has a bent lower portion, and the bent portion is flush with the lower surface of the display portion. According to this aspect, the auxiliary member has a shape that is easy to be held, and the auxiliary member is gripped even when the surveying instrument is held by hand from below the display unit, and the load applied to the display unit can be reduced.

Preferably, the display portion has a convex portion on the back surface, the auxiliary member is provided with a fitting hole for fitting to the convex portion, and the display portion is fixed to the support portion in a state of being fitted to the auxiliary member. And. According to this aspect, since the display portion is fixed to the support portion while being fitted to the auxiliary member, it is easy to assemble and both can be firmly fixed without deviation.

As is clear from the above description, according to the present invention, it is possible to provide a surveying instrument in which the rigidity of the display unit is improved and the measurement accuracy is prevented from deteriorating.

It is a front view of the surveying instrument which concerns on embodiment. It is a right side view of the surveying instrument. It is an exploded perspective view of the support column of the surveying instrument. The display unit housing, (A) is a front view, (B) is a right side view, and (C) is a rear perspective view. It is a reinforcing member, (A) is a front view, (B) is a right side view, and (C) is a rear perspective view. It is a rear perspective view of the state where the display part housing and the reinforcing plate are fitted. It is a modification, and is an exploded perspective view of a display part housing, a reinforcing plate, and a support part.

Hereinafter, specific embodiments of the surveying instrument of the present invention will be described with reference to the drawings. The embodiments are not limited to the invention, but are exemplary, and all the features and combinations thereof described in the embodiments are not necessarily essential to the invention.

(Embodiment)
FIG. 1 is a front view of the surveying instrument 1 according to the embodiment of the present invention, and FIG. 2 is a right side view of the surveying instrument 1. FIG. 3 is an exploded perspective view of the support column 3.

The surveying instrument 1 is a total station equipped with distance measuring and angle measuring functions, and is supported by the leveling section 2, the base 14 fixed to the leveling section 2, and the base 14 so as to be horizontally rotatable around a vertical axis. It is provided with a support column 3 and a telescope 4.

The support column portion 3 has a U-shaped outer shape, and has a root portion 31 held by the base 14, and a pair of suspension portions 32, 32 extending upward from the root portion 31. A horizontal axis 11 is provided on the pair of racks 32, 32, and the horizontal axis 11 supports the telescope 4 so as to be vertically rotatable. The strut portion 3 is an aluminum die-cast product formed by die-casting an aluminum alloy in order to accommodate a complicated shape while having rigidity.

A display unit 5 for displaying the survey result and the state is provided on the front surface of the support column 3, and the display unit 5 is in a state of facing slightly upward from the vertical position so that the operator can easily look into and confirm it. The root portion 31 is provided with a support portion 33 protruding from the front surface in order to fix the display portion 5, and the end surface of the support portion 33 is a slope corresponding to the inclination of the display portion 5.

The display unit 5 is composed of a display unit cover 10, a display unit housing 9, a first packing 6, an auxiliary member 7, and a second packing 8 from the outside, and is fixed to the support unit 33. The front surface of the display unit 5 is provided with a liquid crystal display for displaying information and a switch for inputting numerical values and the like.

The first packing 6 and the second packing 8 have a ring shape and are in close contact with the edge of the fixed portion over the entire circumference to prevent dust, dust, water droplets, etc. from entering the inside of the surveying instrument 1. .. The packing is also used when fixing the display unit in a general surveying instrument, but in the present embodiment, since the auxiliary member 7 is provided on the back surface of the display unit housing 9, the packing is provided on the back surface of the display unit housing 9. In addition to the packing 6 of 1, a second packing 8 is further provided on the back surface of the auxiliary member 7.

As shown in FIG. 3, the display unit cover 10 is fixed to the display unit housing 9 with cover bolts 13, and the display unit housing 9 is fitted to the auxiliary member 7 while sandwiching the first packing 6 between them. Further, while sandwiching the second packing 8 on the back surface of the auxiliary member 7, the second packing 8 is fixed to the screw hole 34 of the support column 3 with the housing bolt 12. That is, the display unit housing 9, the first packing 6, the auxiliary member 7, and the second packing 8 are fastened together.

FIG. 4 is a display unit housing 9, showing a state in which the first packing 6 is engaged, (A) is a front view, (B) is a right side view, and (C) is a rear perspective view.

The display unit housing 9 is a frame for holding a device such as a liquid crystal display, and is a thin-walled resin molded product formed by injection molding or the like of resin or the like. A concave portion 91 recessed in the back surface in a rectangular shape is formed in the upper center to match the shape of the liquid crystal display. The first packing 6 engages with the entire circumference of the edge portion on the back surface of the recess 91.

At the four corners of the bottom surface of the recess 91, bag portions 92 that are recessed further toward the back surface than the bottom surface of the recess 91 are formed. A housing through hole 93 is provided on the bottom surface of the bag portion 92, and the housing bolt 12 is screwed into the screw hole 34 provided in the support portion 33 via the housing through hole 93 to display the display. The portion housing 9 is fixed to the support portion 33.

Female screw portions 94 are provided at the four corners of the display unit housing 9 and at the center of the upper and lower edges at a total of six locations. A female screw is embedded in the female screw portion 94.

The display unit cover 10 is provided with a through hole at a position corresponding to the female screw portion 94. The display unit cover 10 covers the display unit housing 9 from the front surface, and the cover bolt 13 is used to cover the display unit housing 9 in the display unit housing 9. It will be concluded.

5A and 5B are auxiliary members 7, where FIG. 5A is a front view, FIG. 5B is a right side view, and FIG. 5C is a rear perspective view. FIG. 6 is a rear perspective view showing a state in which the auxiliary member 7 and the display unit housing 9 are fitted together.

The auxiliary member 7 is composed of an auxiliary member main body 71, a strip 72, and a strip bolt 73. The auxiliary member 7 is arranged on the back surface of the display unit housing 9, covers the back surface of the display unit housing 9, and is fixed to the support portion 33.

The strip 72 is a pair of upper and lower strip-shaped flat plates extending to the left and right along the back surface of the auxiliary member main body 71, and is fixed to the auxiliary member main body 71 from the back surface by three strip bolts 73, respectively. The length of the strip bolt 73 is adjusted so that the tip of the strip bolt 73 does not protrude from the front surface of the strip 72 while being screwed into the strip screw hole 74 provided in the strip 72 from the back surface.

The auxiliary member main body 71 is a metal flat plate that is bent in accordance with the shape of the back surface of the display unit housing 9, and is loosely bent forward once at a position corresponding to the lower end of the recess 91, and further greatly bent at the lower end. It is bent forward. The bent portion 77 at the lower end portion is flush with the lower surface of the display unit housing 9 in the assembled state.

The auxiliary member main body 71 has fitting holes 75 cut out in a circle at the left and right ends in the upper and middle portions, and the bag portion 92 fits into the fitting holes 75 at these four locations. The strip 72 is fixed at a position corresponding to the fitting hole 75, each end 72A of the strip 72 is bent toward the back by the depth of the bag 92, and the front surface of the end 72A is a bag. It is formed so as to receive the back surface of the portion 92. Since the bag portion 92 protruding from the back surface fits into the fitting hole 75, it is easy to assemble and both can be fixed without slippage.

Auxiliary member through holes 76 are formed in the left and right end portions 72A of the strip 72, and the auxiliary member 7 is fastened together with the display portion housing 9 to the support portion 33 via the auxiliary member through holes 76. ..

The auxiliary member 7 covers the back surface of the display unit housing 9 and plays a role of improving its rigidity. In the present embodiment, the auxiliary member 7 is composed of a plurality of parts such as the auxiliary member main body 71 and the strip 72 in order to correspond to the back surface of the display unit housing 9 having a complicated shape, but one sheet metal. It is also preferable to form by pressing.

(Action effect)
In conventional surveying instruments, when taking out from the storage case, the display part protruding to the front is often grasped. Since the display part, which is a resin molded product, has low rigidity, there is a concern that it may be distorted and deformed, or a load may be applied to an unexpected part of the attached column part, which may adversely affect the survey accuracy.

In the present embodiment, since the display unit housing 9 is provided with the metal auxiliary member 7 that covers the back surface of the display unit housing 9 and is fixed to the support portion 33, the surveying instrument 1 is displayed to be taken out from the storage case. When the hand is turned to the back side to grip the portion 5, the auxiliary member 7 fixed to the support portion 33 is gripped. It is possible to reduce the load applied to the display unit 5 (display unit housing 9 and display unit cover 10) and the support column portion 3. It is possible to strengthen the rigidity of the display unit 5, prevent the display unit 5 and the support column portion 3 from being deformed, and prevent the surveying accuracy of the surveying instrument 1 from deteriorating.

In the present embodiment, the auxiliary member 7 is added to the conventional configuration, and the auxiliary member 7 is fastened together with the display unit housing 9 and fixed to the support column portion 3. The auxiliary member 7 is fixed by using the support portion 33, the screw hole 34, and the housing through hole 93, which have been conventionally provided for fixing the display unit 5, as they are, and the auxiliary member 7 is added. The increase in the amount of offset to the front is coped with by adjusting the bolt length of the housing bolt 12. That is, the rigidity of the display unit 5 is improved by adding the auxiliary member 7 without changing the shapes of the support column portion 3 and the display unit housing 9. It is a low-cost and highly effective configuration without design changes.

Further, the auxiliary member 7 (auxiliary member main body 71) has a shape along the back surface of the display unit housing 9, and has a bent portion 77 flush with the lower surface of the display unit housing 9 at the lower portion. The shape is easy to lift from below, and the auxiliary member 7 is gripped even when the operator holds the surveying instrument 1 by holding his / her hand from under the display unit 5, so that the load on the display unit 5 can be reduced.

(Modification example)
FIG. 7 is a modified example of the present embodiment. It is an exploded perspective view for showing the assembled state of the display part housing 9, the auxiliary member 7, and the support part 3 (support part 33), and the 1st packing 6 and the 2nd packing 8 are omitted.

In this embodiment, the bag portion 92 of the display unit housing 9 is formed on the left and right sides of the recess 91, not on the bottom surface of the recess 91. The back surface of the bag portion 92 is flush with the back surface of the recess 91. The auxiliary member 7 is provided with ear portions 78 protruding to the left and right corresponding to the position of the bag portion 92. The selvage 78 has an ear screw hole 79 in the center, and the housing bolt 12 is screwed into the selvage screw hole 79 via the selvage through hole 93 of the bag 92, so that the display housing 9 is used. Is fixed to the auxiliary member 7.

The auxiliary member 7 is directly fixed to the screw hole 34 of the support portion 33 with a bolt 15 via the auxiliary member through hole 76 of the strip 72 on the back surface. Since the strip 72 is bent so that the end portion 72A of the strip 72 protrudes toward the back surface as in the above-described embodiment, the head protrudes from the front surface of the auxiliary member main body 71 with the bolt 15 fastened. There is nothing to do.

That is, the auxiliary member 7 is directly screwed to the support portion 33, and the display unit housing 9 is screwed to the auxiliary member 7. According to this configuration, since the auxiliary member 7 is directly fastened to the support column 3, the auxiliary member 7 can be firmly fixed.

Although the preferred embodiments and modifications of the present invention have been described above, the above embodiments and modifications are examples of the present invention, and these can be combined based on the knowledge of those skilled in the art. The form is also included in the scope of the present invention.

1 Surveying instrument 3 Strut part 4 Telescope 7 Auxiliary member 9 Display part housing 10 Display part cover 71 Auxiliary member body 75 Fitting hole 76 Auxiliary member through hole 77 Bending part 92 Bag part 93 Housing through hole

Claims (4)

It is provided with a U-shaped strut that holds the telescope vertically rotatable, and a display that is provided on the front of the strut.
The back surface of the display unit is provided with a metal auxiliary member that covers the back surface of the display unit and is fixed to the support column portion .
The lower part of the auxiliary member is bent, and the bent portion is flush with the lower surface of the display portion.
A surveying instrument characterized by that. The auxiliary member is provided with a through hole, and the auxiliary member is fastened and fixed to the support column together with the display portion through the through hole.
The surveying instrument according to claim 1, wherein the surveying instrument is characterized in that. The display portion is fixed to the auxiliary member, and the auxiliary member is fixed to the support column portion.
The surveying instrument according to claim 1, wherein the surveying instrument is characterized in that. The display portion has a convex portion on the back surface, the auxiliary member is provided with a fitting hole for fitting to the convex portion, and the display portion is fixed to the support column portion in a state of being fitted to the auxiliary member. Be done,
The surveying instrument according to any one of claims 1 to 3 , wherein the surveying instrument is characterized in that.

Images