JP6914675B2 - Laser surveying instrument - Google Patents

Description

The present invention relates to a laser surveying instrument that is mounted on a tripod or the like and emits laser light to perform surveying.

Conventionally, a laser surveying instrument that performs a survey by emitting a laser beam has been known. The laser surveying instrument of Patent Document 1 is an example, and is used when forming a reference plane or a reference line necessary for civil engineering or construction work.
As shown in FIG. 2, the laser surveying instrument of Patent Document 1 includes a housing 31 and a laser floodlight (measuring instrument) 32 arranged in the housing 31. The housing 31 has a base housing 35 and a rotary head 36, and a laser floodlight 32 is housed in the base housing 35, and laser light is emitted from the laser floodlight 32 toward the rotary head 36. The rotary head 36 deflects the laser beam received from the laser floodlight 32 in the horizontal direction and has a rotatable light deflector 33. As a result, the laser beam is emitted horizontally toward the outside while the light deflector 33 rotates, and a reference line or the like can be formed.

Since this laser surveying instrument is often fixed by screwing it to a pedestal such as a tripod, the base housing 35 is provided with a handle 37 for lifting. The handle 37 has a grip element 45 to be gripped and upper and lower mounting elements 46 and 47 for mounting the grip element 45 to the base housing 35. The handle 37 of Patent Document 1 is also for protecting the device from an impact such as dropping, and four handles 37 are arranged at equal intervals on the side surface and protrude in the height direction from the base housing 35. It has upper and lower shock absorbing elements 48 and 49.

Special Table 2016-510407 Gazette

By the way, since laser surveying instruments often lift up to a pedestal at a high position from the user's chest to the shoulder, placing the handle 37 on the upper side like the handle of a carrying bag raises the arm and lifts a heavy device. This is not preferable. Further, since it is necessary to eliminate as much as possible the member that blocks the laser beam emitted from the rotary head 36, it is not preferable to dispose the handle 37 on the side surface of the rotary head 36. Therefore, the handle 37 is preferably arranged on the side surface of the base housing 35.
However, the laser surveying instrument has a considerable weight because various parts such as a laser floodlight 32, a motor for rotating the light deflector 33, and a power supply unit are housed in the base housing 35, and the center of gravity is It is located at a position horizontally separated from the handle 37.
Therefore, the operator feels the weight in front of the gripped handle 37, and it is not always easy to lift the laser surveying instrument to a high position such as a pedestal of a tripod, which causes a fall.

An object of the present invention is to solve such a problem, and to provide a laser surveying instrument that can be easily held and can effectively prevent a fall.

The above object is a laser surveying instrument including a housing having a handle protruding from an outer surface and a laser floodlight provided in the housing, and measuring with a laser beam emitted from the laser floodlight. The handle is a thumb. The support arm portion has a grip portion gripped by the above and a support arm portion that supports the grip portion to the housing, and the support arm portion has an upper surface on which a thumb can be placed while the grip portion is held by at least the index finger. The grip portion side of the upper surface is pressed by the abdomen beyond the interphalangeal joint of the thumb in the direction of bending the interphalangeal joint. The pressed portion is formed, and the surface of the pressed portion pressed by the thumb is a center of gravity on a virtual circumference centered on the abutting portion where the index finger abuts on the lower surface. It has a part along a direction that is close to the direction orthogonal to the tangent line passing through the thumb, and in a state where the interphalangeal joint of the thumb is bent, from the bent part in the abdomen to the most bulging part on the fingertip side. It is solved by a laser surveying instrument that is curved according to the shape.

According to the above invention, the handle for holding the laser surveying instrument has a grip portion gripped by the fingers and a support arm portion that supports the grip portion on the housing, and the support arm portion has at least a grip portion. It has an upper surface on which the thumb can be placed and a lower surface on which the index finger can be brought into contact with the index finger. Therefore, the support arm portion is supported by the index finger, and the support arm portion closer to the center of gravity than the grip portion in the horizontal direction is sandwiched between the index finger and the thumb, and the weight can be reduced by the amount closer to the center of gravity.
In this regard, when the support arm portion is sandwiched between the index finger and the thumb and the index finger is in contact with the lower surface of the support arm portion, the contacted portion serves as a fulcrum, and the center of gravity in front of it becomes the fulcrum. Attempts to rotate downwards. However, in the present invention, the upper surface of the support arm portion is pressed by the abdomen ahead of the interphalangeal joint (so-called first joint) of the thumb (on the fingertip side) in the direction of bending the interphalangeal joint. A pressed portion is formed. Therefore, the pressed portion can be pressed by the abdomen of the thumb in a direction substantially opposite to the above-mentioned rotation direction, whereby the rotation can be effectively prevented.
Moreover, this pressed portion is formed on the grip portion side of the support arm portion. Then, the thumb does not have to be placed at the back (housing side) of the support arm portion, and therefore, it becomes easier to close the side and the laser surveying instrument can be held more easily.

Also, the pressed portion is, in a state in which the bending of the interphalangeal joint of the thumb, curved so as to correspond to the shape of to the most Rise do we part of the abdomen to put that song clogs part or al finger tip side NS.
Therefore, when the interphalangeal joint of the thumb is bent, the abdomen of the thumb and the pressed portion are easily brought into close contact with each other, and the pressed portion can be easily pressed.

Further, preferably, the concave or convex locking portion that is arranged on the upper surface and is locked to the thumb is not formed on the pressed portion, whereas the pressed portion on the upper surface is used. Is also characterized in that it is formed on the housing side.
Then, since the concave or convex locking portion is not formed in the pressed portion, the abdomen of the thumb is brought into closer contact with the pressed portion, and the front is opposite to the direction in which it tends to rotate downward. It becomes easier to press the pressed portion in the side direction. On the other hand, since the locking portion is formed on the upper surface on the housing side of the pressed portion, the locking portion and the fingertip not placed on the pressed portion are locked, and the locking portion is locked. The rotation can be suppressed even in the portion.

Further, preferably, the contact portion, which is a portion of the lower surface where the index finger can be contacted, is between the proximal interphalangeal joint and the distal interphalangeal joint on the side surface of the index finger when the grip portion is gripped by the index finger. It is characterized by bulging so as to press between the joints.
Therefore, unlike the joint portion, the joints of the index finger are soft, and the soft portion and the abutting portion are easily brought into close contact with each other so that the support arm portion can be reliably supported by the index finger.

More preferably, the housing is provided with a protective member that projects outward from the outer surface on the opposite side of the handle to reduce the impact on the outer surface when dropped. The protective member is composed of a first protective portion and a second protective portion which are connected so as to provide a space between them, and both the first protective portion and the second protective portion are flat. It is characterized in that the outer surface exposed from the space portion is formed so as not to come into contact with the table when it is brought into contact with the table.
Then, not only can the handle protruding from the outer surface of the housing prevent a direct impact on the outer surface when dropped, but also the opposite side of the handle can be effectively prevented from impact when dropped by the protective member.
Here, if the protective member is provided on the opposite side of the handle, the device becomes heavy or the center of gravity shifts toward the protective member side (front), making it difficult to hold the laser surveying instrument. However, the protective member of this configuration is composed of a first protective portion and a second protective portion which are arranged in a row so as to provide a space portion between them. Therefore, the protective member on the opposite side of the handle can be lightened by the amount of the space formed.
Moreover, when both the first protective portion and the second protective portion are brought into contact with a flat base, the outer surface exposed from the space portion does not come into contact with the base, so that the housing can be protected even if the space portion is provided. ..
Further, preferably, a recessed portion is formed on the side surface of the housing so as to be recessed inward corresponding to the position of the grip portion and to accommodate a part of the finger holding the grip portion. The recessed portion has a curved portion that is curved inward in a region adjacent to the side surface of the housing that is not recessed, and is a pair of the curved portions as compared with the curved portion on the side between the pair of the grip portions. The curved portion on the opposite side of the grip portion has a larger radius of curvature.
Therefore, the grip portion can be gripped without separating the fingers from the side surface of the housing, and the gripped fingers can be brought as close to the center of gravity of the device as possible. In addition, a finger that is slightly bent to grip the grip portion can be easily inserted into the recessed portion.

As described above, according to the present invention, it is possible to provide a laser surveying instrument that can be easily held and can effectively prevent a fall.

A perspective view showing a front surface, a plane surface, and a right side surface of a laser surveying instrument according to an embodiment of the present invention. FIG. 3 is a perspective view showing the back surface, the plane surface, and the right side surface of the laser surveying instrument of FIG. FIG. 3 is a perspective view showing the back surface, the bottom surface, and the left side surface of the laser surveying instrument of FIG. Front view of the laser surveying instrument of FIG. The rear view of the laser surveying instrument of FIG. Top view of the laser surveying instrument of FIG. Bottom view of the laser surveying instrument of FIG. The right side view of the laser surveying instrument of FIG. The left side view of the laser surveying instrument of FIG. The figure which shows the example of the use state which held the handle of the laser surveying instrument of FIG. FIG. 6 is a schematic cross-sectional view taken along the line AA of FIG. The figure around the protection member when both the 1st protection part and the 2nd protection part of FIG. 10 are in contact with a flat table. The partial bottom view when the pair of protective members of FIG. 2 are brought into contact with a flat table at the same time. The plan view of the laser surveying instrument which concerns on 1st modification of embodiment of this invention. FIG. 4 is a perspective view showing the front surface, the plane surface, and the right side surface of the laser surveying instrument of FIG. The plan view of the laser surveying instrument which concerns on 2nd modification of embodiment of this invention. FIG. 16 is a perspective view showing the front surface, the plane surface, and the right side surface of the laser surveying instrument of FIG. FIG. 3 is a plan view of a laser surveying instrument according to a third modification of the embodiment of the present invention. FIG. 8 is a perspective view showing the front surface, the plane surface, and the right side surface of the laser surveying instrument of FIG. FIG. 8 is a schematic cross-sectional view taken along the line BB near the upper surface of the support arm portion of FIG. It is a schematic CC cross section in the DD portion of FIG. 18, and is a schematic view around the upper surface of the support arm portion. The plan view of the laser surveying instrument which concerns on 4th modification of embodiment of this invention. FIG. 2 is a perspective view showing the front surface, the plane surface, and the right side surface of the laser surveying instrument of FIG. FIG. 2 is a schematic cross-sectional view taken along the line EE near the upper surface of the support arm portion of FIG. 22. FIG. 2 is a schematic FF cross section in the GG portion of FIG. 22, which is a schematic view of the periphery of the upper surface of the support arm portion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
Since the embodiments described below are suitable specific examples of the present invention, various technically preferable limitations are attached, but the scope of the present invention particularly limits the present invention in the following description. Unless otherwise stated, the present invention is not limited to these aspects. Further, the same reference numerals given in each figure have the same structure. Further, the vertical direction described below is a direction when the laser surveying instrument 10 is placed with the head portion 33, which will be described later, facing up. Further, in each figure, the shadow indicated by the thin line only represents the three-dimensional shape of the surface of the laser surveying instrument.

1 to 9 are laser surveying instruments 10 according to an embodiment of the present invention, FIG. 1 is a perspective view showing a front surface, a plane and a right side surface thereof, and FIG. 2 is a perspective view and a view showing a back surface, a plane surface and a right side surface thereof. 3 is a perspective view showing the back surface, the bottom surface and the left side surface, FIG. 4 is a front view, FIG. 5 is a rear view, FIG. 6 is a plan view, FIG. 7 is a bottom view, FIG. 8 is a right side view, and FIG. 9 is a left side view. Is. The right side view of FIG. 8 and the left side view of FIG. 9 are symmetrical except for the sighting device 12 (see FIG. 2). Further, in FIGS. 7 and 8, the alternate long and short dash line indicates a virtual line, and the broken line indicates an invisible internal structure.
The laser surveying instrument 10 in these figures forms a reference plane and a reference line during civil engineering and construction by emitting laser light, and is also called a laser marking device, a rotating laser device, a rotating laser, or the like. The laser surveying instrument 10 of the present invention is not limited to a device for forming a reference plane or a reference line, and may be, for example, a device that receives emitted laser light and measures a distance or an angle. ..

The laser surveying instrument 10 in the figure emits a laser beam and irradiates a known light receiving element device (not shown, also referred to as a level sensor) that receives a measurement object or a laser beam to obtain a reference plane or a reference line. Is to be measured. Such a laser surveying instrument 10 can be mounted on a pedestal of a tripod, and is housed in a housing 30 mounted on the pedestal and a device main body 14 (FIG. 10) for emitting laser light with predetermined specifications. 8) and.

A known device can be used as the main body 14, and FIG. 8 schematically shows this. The apparatus main body 14 of FIG. 8 is for rotating a laser floodlight 15 that emits laser light, a rotary scanning unit 16 that emits laser light received from the laser floodlight 15 to the outside while rotating, and the rotary scanning unit 16. Motor 17 and a power supply unit 18 for supplying power to the laser floodlight 15 and the motor 17.

The laser floodlight 15 is composed of, for example, a laser diode and a collimating lens (not shown), and laser light is emitted along the optical axis LB1 toward a rotary scanning unit 16 above the laser diode and a collimating lens (not shown). The emitted laser light passes through the tubular member 19 having a cavity along the optical axis LB1 and irradiates the rotary scanning unit 16.
The rotary scanning unit 16 has an optical deflector 13 such as a pentaprism held inside the rotary scanning unit 16, and the optical deflector 13 sets the laser beam as the horizontal optical axis LB2 and emits the laser light to the outside from the laser ejection port 21. Will be done. The rotary scanning unit 16 is connected to the tubular member 19, and the tubular member 19 is rotated by the motor 17 via the gear 20, so that the rotary scanning unit 16 can rotate around the optical axis LB1. Although FIG. 8 shows only the laser beam emitted in the horizontal direction, the present embodiment also has a configuration in which the laser beam can be emitted with a gradient.
The power supply unit 18 supplies power to each component such as the laser floodlight 15 and the motor 17, and occupies a large weight in terms of weight. Therefore, in consideration of stability on a tripod, the power supply unit 18 is arranged at the lower part in the housing 30.
Since the device main body 14 is heavy, and the power supply unit 18 housed in the lower side is particularly heavy, the center of gravity CT of the laser surveying instrument 10 is generally slightly below the central portion, as shown in FIG. 10 described later.

As shown in FIG. 8, the housing 30 accommodating such a device main body 14 has a shape like a substantially half body in the longitudinal direction of an egg or a Daruma doll as a whole (also in FIGS. 1 to 3). (See), even if it is tilted slightly, it will return to its original normal position. The housing 30 has a housing main body portion (hereinafter referred to as “main body portion”) 32 and a head portion 33 provided on the upper portion of the main body portion 32 and emitting laser light to the outside. The laser floodlight 15, the motor 17, and the power supply unit 18 described above are housed in the main body 32, and the rotary scanning unit 16 is housed in the head 33.

The head portion 33 has a cover portion 35 made of transparent glass or the like that surrounds the rotation scanning portion 16 and protects the rotary scanning portion 16. The cover portion 35 is a plurality of (four in the case of the figure) support columns 37, and the positions thereof are held. The upper part of the cover portion 35 is sealed with a dome-shaped top plate 36, and a sighting device 12 for emitting a laser beam toward a light receiving element device or a surveying object (not shown) is provided on the upper surface of the top plate 36. Has been done.

The main body 32 is made of a plastic material such as ABS resin having high rigidity and waterproofness. On the bottom surface 32A of the main body 32, a leg portion 27 having a low height that comes into contact with the pedestal of the tripod is formed, and a screw hole 28 (see FIG. 7) is formed in the central portion surrounded by the leg portion 27. ing. The screw hole 28 is a hole that is screwed with the screw of the pedestal of the tripod.
A plurality of recesses 26, which are diffused reflection promoting portions for promoting diffused reflection, are formed in the lower portion of the side surface 32B of the main body portion 32. As a result, even if a pedestal or the like collides with the lower portion of the side surface 32B and is damaged, the damage can be made inconspicuous by diffused reflection of light. In the case of the present embodiment, as shown in FIGS. 7 and 8, the recess 26 has a substantially rectangular shape in front view, is not formed between the handles 40, 40 described later, and is not formed between the handles 40 and the protective member. It is formed at equal intervals between the 70 and the protective members 70 and 70, respectively.

As shown in FIGS. 6 and 7, such a main body portion 32 has a substantially circular plane and bottom view, and a pair of handles 40 and 40 project from the peripheral side surfaces thereof. The pair of handles 40, 40 are handles for transporting or lifting the laser surveying instrument 10 to the installation location, are separated from each other so that they can be grasped by both hands, and are predetermined to each other in a plan view and a bottom view. It is arranged with an angle θ. The separation dimension W in a plan view is about 200 to 250 mm, and the angle θ is 45 to 50 degrees, whereby the user does not open the side too much and does not bend the wrist substantially in the horizontal direction. The handles 40 and 40 can be gripped at the same time.

A pair of protective members 70, 70 projecting outward are provided on the side surfaces of the housing 30 on the opposite side of the pair of handles 40, 40. The protective members 70 and 70 prevent the housing 30 from directly colliding with the housing 30 when dropped to reduce the impact from the outside.
All of the handles 40, 40 and the protective members 70, 70 are arranged along substantially the vertical direction Y as shown in FIGS. 4 and 5. Further, as shown in FIGS. 6 and 7, the handles 40, 40 and the protective members 70, 70 are arranged at an angle of about 45 degrees in a plan view and project along the radial direction. In this way, both the handle 40 and the protective member 70 protect the laser surveying instrument 10 from impacts such as dropping.
As shown in FIG. 4, an operation unit having various operation buttons 38 such as a switch button, a menu button, and a gradient setting button is arranged between the pair of handles 40 and 40.

Here, the handles 40, 40 and the protective members 70, 70 will be described in more detail. The handles 40 and 40 have the same configuration as each other except that the positions with respect to the housing 30 are different, and the pair of protective members 70 and 70 are also similar to each other except that the positions with respect to the housing 30 are different. It is a composition. Therefore, unless otherwise specified, only one handle 40 and the protective member 70 will be described below.

[Details of the handle]
First, the handle 40 will be described with reference to FIGS. 10 and 11, as appropriate with reference to FIGS. 1 to 9 described above. FIG. 10 is a view showing an example of a usage state in which the handle 40 of the laser surveying instrument 10 is gripped, and FIG. 11 is a schematic cross-sectional view taken along the line AA of FIG. Partially illustrated. The figure surrounded by the alternate long and short dash line in FIG. 10 is a schematic vertical cross-sectional view of the vicinity of the pressed portion 53, which will be described later (however, parallel diagonal lines representing the cross section are omitted).
As shown in FIG. 10, the handle 40 is a substantially U-shaped vertical handle having two bent portions 40a and 40b as a whole, and the grip portion 42 gripped by fingers and the grip portion 42 are housed. It has a support arm portion 41 that supports the 30.

The grip portion 42 has a length L1 substantially the same as the height of the main body portion 32, and is arranged so as to face substantially the side surface of the main body portion 32. At least an insertion space S1 into which an index finger can be inserted is formed between the grip portion 42 and the housing 30, and fingers other than the thumb (index finger, middle finger, drug finger, small finger) can be naturally inserted into the insertion space S1 in the figure. It is a space (note that in the present embodiment, all fingers can be inserted into the insertion space S1). In this way, the laser surveying instrument 10 can be held by grasping the grip portion 42 with fingers.
As shown in FIG. 11, the grip portion 42 has a width corresponding to the dimension between the distal interphalangeal joint DJ and the proximal interphalangeal joint PJ of the index finger FF. The dimension is W2, which allows the joints DJ and PJ to be bent to easily grip the grip portion 42.

As shown in FIG. 10, a plurality of convex portions 50 are formed on the outer surface 42A and the inner surface 42B of the grip portion 42. The convex portions 50 are arranged at equal intervals along the longitudinal direction (vertical direction) Y of the grip portion 42, and are formed so that the separation dimension W1 of the two convex portions 50 adjacent to each other is the same as the finger width W3 other than the thumb. Has been done. Further, the convex portion 50 in the figure has a cigar-shaped or oval-shaped front view, and its longitudinal direction is along the width direction of the grip portion 42. In the present invention, the convex portion 50 may not be provided, and even if it is present, the shape is not limited to the shape shown in the figure as long as it has a non-slip function, and may be, for example, a dot shape. Further, in the case of the present embodiment, the convex portion 50 of the outer surface 42A and the convex portion 50 of the inner surface 42B are said to have substantially the same position with respect to the grip portion 42 and the shape of itself, but even if the position and shape are changed. I do not care.
Such a grip portion 42 can be formed of a plastic material such as ABS resin having high rigidity and water resistance, but a rubber elastic member having relatively high rubber elasticity (for example, silicone) is formed on the surface of the plastic material having high rigidity. It is preferable to dispose of rubber (rubber, elastomer, rubber). As a result, the gripped fingers can be prevented from slipping, and the impact at the time of dropping can be absorbed. Alternatively, only the convex portion 50 may be made into a rubber elastic member by two-color molding.

As shown in FIGS. 7 and 8, a recessed portion 29 recessed inward is formed on the side surface 32B of the main body portion 32 corresponding to the position of the grip portion 42. A part of the finger holding the grip portion 42 is housed in the recessed portion 29, whereby the grip portion 42 can be gripped without being too far from the side surface 32B, and the gripped finger can be gripped as much as possible. You can get closer to the center of gravity. The recessed portion 29 has curved portions 29A and 29B in which the region (which serves as the entrance of the finger) adjacent to the non-recessed side surface 32B is curved inward. The curved portion 29B on the opposite side (protective member 70 side) has a larger radius of curvature R than the curved portion 29A on the side between the pair of grip portions 42, 42. The radius of curvature R of the present embodiment is the same as the linear distance L from the middle finger internode joint (joint at the base of the finger) MP to the fingertip when the middle finger MF, which is the longest finger, is slightly bent. Is approximately 70 mm. Therefore, a finger that is slightly bent to grip the grip portion 42 can be easily inserted into the recessed portion 29.

As shown in FIG. 10, the support arm portion 41 is an upper arm portion 45 connected to the upper portion (head portion 33 side) of the main body portion 32 in a state where the laser surveying instrument 10 is erected with the head portion 33 facing up. And a lower arm portion 46 connected to the lower portion of the main body portion 32. The upper and lower arm portions 45 and 46 are both connecting members for connecting the grip portion 42 to the housing 30, but their functions are different.
The lower arm portion 46 has a function of protecting the housing 30 in cooperation with the leg portion 27, and like the leg portion 27, slightly protrudes from the bottom surface 32A. The angle of the bent portion 40a of the handle 40, which is the boundary between the lower arm portion 46 and the grip portion 42, is substantially a right angle.

On the other hand, the upper arm portion 45 of the support arm portion 41 not only protects the housing 30, but also has a function for easily holding the laser surveying instrument 10. That is, the upper arm portion 45 has an upper surface 45A on which the thumb TH can be arranged and a lower surface 45B on which the index finger FF can be brought into contact with the grip portion 42 held by at least the index finger FF. Specifically, the angle θ2 of the bent portion 40b of the handle 40, which is the boundary between the upper arm portion 45 and the grip portion 42, is approximately 95 to 120 degrees as a whole. Further, as shown in FIG. 11, the upper arm portion 45 has a thickness D1 that can be sandwiched between the abdomen of the thumb TH and the side surface of the index finger FF. As a result, as shown in FIG. 10, the user supports the upper arm portion 45 on the side surface of the index finger FF, and the upper arm portion 45 closer to the center of gravity CT of the device than the grip portion 42 in the horizontal direction X. Can be comfortably pinched between the index finger FF and the abdomen of the thumb TH.

Further, as shown in FIG. 10, on the upper surface 45A of the upper arm portion 45, the direction R1 in which the interphalangeal joint KS is bent by the abdominal THa ahead of the interphalangeal joint (so-called first joint) KS of the thumb TH. A pressed portion 53 is formed so as to be pressed against. Therefore, since the center of gravity CT is in front of the user, the contact portion OP, which is the portion where the index finger FF abuts on the lower surface 45B of the upper arm portion 45, serves as a fulcrum and the laser is used in the direction of R2 in FIG. Even if the surveying instrument 10 tries to rotate, the abdominal THa ahead of the interphalangeal joint KS of the thumb TH can press the pressed portion 53 so as to cancel the rotation, and the rotation can be effectively prevented. ..

The surface of the pressed portion 53 pressed by the thumb TH (hereinafter referred to as “pressed surface”) is a direction P2 substantially orthogonal to the tangent line P1 passing through the center of gravity CT on the virtual circumference centered on the contact portion OP. It is preferable to form along. However, the pressed surface of the present invention does not have to follow the direction P2 as long as it is pressed so that the rotation can be canceled. In the case of the present embodiment, the pressed surface has a portion along the direction approximated to the direction P2, and the interphalangeal joint KS is bent reasonably (for example, bent at an angle similar to the angle θ2). , It is curved corresponding to the shape from the bent portion THc in the abdominal THa to the most bulging portion THb on the fingertip side. As a result, the abdomen and the pressed surface can be naturally brought into close contact with each other, and the rotation can be canceled without difficulty. In the present embodiment, not only the pressed portion 53 but also the main body portion 32 side corresponds to the shape from the most bulging portion THb to the fingertip when the interphalangeal joint KS of the thumb TH is bent. As a result, the upper surface 45A of the upper arm portion 45 has a curved portion corresponding to the shape of the abdomen of the fingertip from the interphalangeal joint KS of the thumb TH.

Further, the pressed portion 53 is formed on the grip portion 42 side of the upper arm portion 45, and in the case of the figure, near the boundary between the upper arm portion 45 and the grip portion 42 (that is, near the bent portion 40b of the handle 40). ing. Therefore, since the thumb TH is arranged at the back (the main body 32 side) as shown by the thumb TH-1 of the alternate long and short dash line, it is not necessary to raise the hand in the direction of R3 in the figure. As a result, the user can easily close his / her side, and the laser surveying instrument 10 can be more easily held.

A plurality of locking portions 58 that are locked to the fingertips of the thumb TH are formed on the upper surface 45A of the upper arm portion 45 that is the support arm portion 41. The locking portion 58 in the figure has a convex shape that makes it easier to lock with the thumb TH, but the present invention is not limited to this, and the locking portion 58 may be concave. Further, as shown in FIG. 6, the locking portions 58 of the present embodiment are rod-shaped, and three are arranged along the direction connecting the bent portion 40b and the main body portion 32. It is not limited to, and may be two or less, or four or more.
Preferably, the locking portion 58 is curved so as to be slightly convex toward the bent portion 40b in a plan view, whereby the swollen abdomen of the thumb can be easily locked.
Further, while the locking portion 58 is not formed on the pressed portion 53, it is preferably formed on the main body portion 32 side of the pressed portion 53 on the upper surface 45A. Therefore, as shown in FIG. 10, the thumb easily comes into close contact with the pressed portion 53, and the fingertip is locked to the locking portion 58 rather than the most swollen portion THb, and the rotation direction R2 is also used there. It can be pressed in the opposite direction.

By the way, regarding the upper arm portion 45, when the grip portion 42 is gripped by the index finger FF, as shown in FIG. 11, the contact with the index finger FF on the lower surface 45B of the upper arm portion 45 is a portion that can be contacted. The portion 56 is bulged so as to enter the partial FFa between the proximal interphalangeal joint PJ and the distal interphalangeal joint DJ of the index finger FF. Therefore, the contact portion 56 and the index finger FF can be brought into close contact with each other.
Further, also for the upper arm portion 45, it is more preferable to dispose a rubber elastic member having relatively high rubber elasticity on the surface of a plastic material having high rigidity. At this time, as shown in FIG. 10, the locking portion 58 of the upper arm portion 45 is not a mere non-slip, but a portion that is pressed in the direction opposite to the rotation direction R2. I can't accept the force. Further, even if the convex shape is the same, unlike the convex portion 50 of the grip portion 42, it is not necessary to absorb the impact at the time of dropping. For this reason, the locking portion 58 may be a rubber elastic member such as an elastomer having relatively high rigidity.

[Details of protective member]
Next, the above-mentioned protective member 70 will be described.
As shown in FIGS. 1 and 2, the opposite sides of the two handles 40, 40 project outward from the outer surface of the housing 30 along the circumferential RU of the substantially cylindrical side surface 32B of the main body 32. Two protective members 70, 70 are provided. Both of these protective members 70 and 70 have an outer surface 70a substantially following the shape of the side surface 32B, and the portion of the outer surface 70a corresponding to the upper and lower parts of the main body 32 is large (with a small radius of curvature) toward the outside. It is curved, and the other parts are relatively small (with a large radius of curvature).

As shown in FIG. 10, each of the protective members 70 and 70 is separated into a first protective portion 59 and a second protective portion 60, and the first protective portion 59 and the second protective portion 59 are protected. The portions 60 are continuously provided along the vertical direction Y so as to provide a space portion S2 between them. Therefore, since the protective member 70 is lighter due to the formation of the space portion S2, the protective member 70 can be easily lifted, and the center of gravity CT and the handle 40 can be brought close to each other in the horizontal direction as long as the balance is not lost on the pedestal of the tripod. ..

Specifically, as shown in FIG. 5, the first protective unit 59 is arranged on the upper side and the second protective unit 60 is arranged on the lower side, and the second protective unit 60 is arranged as compared with the first protective unit 59. Is formed large. A hollow portion S3 formed inside is exposed on the end surface of the first protective portion 59 toward the second protective portion 60. A plurality of ribs 55 for maintaining strength are provided in the cavity portion S3. On the other hand, the end face of the second protective portion 60 toward the first protective portion 59 is sealed.

Further, as shown in FIG. 12, when both the first protective portion 59 and the second protective portion 60 are brought into contact with the flat base ST, the side surface 32B exposed from the space portion S2 does not come into contact with the base ST. The protruding dimension H1 makes it possible to protect the side surface 32B.
As shown in FIG. 13, the protruding dimension H1 of the present embodiment also includes a part of the side surface 32B between the protective members 70 and 70 when the pair of protective members 70 and 70 are brought into contact with the flat base ST. At the same time, the dimensions are such that they come into contact with the base ST. As a result, the protrusion dimension H1 is prevented from becoming too large and the protective member 70 becomes heavy, and in the region where the protective member 70 is provided, the rotation of the circumferential RU in FIG. 13 is more than the vertical direction Y in FIG. The sex is enhanced. The protective member of the present invention is not limited to such a configuration, and even when the pair of protective members 70 and 70 are brought into contact with the flat base ST together, the side surface 32B between them is formed as in FIG. It may be configured so as not to come into contact with the table ST.

[First modification]
Next, the laser surveying instrument 100 according to the first modification of the above-described embodiment will be described with reference to FIGS. 14 and 15. FIG. 14 is a plan view of the laser surveying instrument 100, and FIG. 15 is a perspective view showing the front surface, the plane surface, and the right side surface of the laser surveying instrument 100. Since the portion shown by the broken line in FIG. 14 has the same shape as the corresponding portion in FIG. 6 and the portion shown by the broken line in FIG. 15 has the same shape as the corresponding portion in FIG. 1, the description thereof will be omitted. The perspective views showing the back surface, the bottom surface, and the left side surface of the laser surveying instrument 100 are the same as those in FIG.

The characteristic point that the laser surveying instrument 100 of FIGS. 14 and 15 differs from the laser surveying instrument 10 of FIGS. 1 to 13 is the solid line portion of the figure, and the locking formed on the upper surface 45A of the upper arm portion 45. Only the shape of the portion 62. That is, the locking portions 58 shown in FIGS. 1 to 13 have a rod shape, but the locking portions 62 in FIGS. 14 and 15 have a dot shape. Even in such an embodiment, it is possible to prevent the laser surveying instrument 100 from rotating when the handle 40 is gripped by locking the thumb fingertip. The shape of the upper surface 45A other than the locking portion 62 is the same as that of the laser surveying instrument 10 of FIGS. 1 to 13.

[Second modification]
Next, the laser surveying instrument 200 according to the second modification of the above-described embodiment will be described with reference to FIGS. 16 and 17. FIG. 16 is a plan view of the laser surveying instrument 200, and FIG. 17 is a perspective view showing the front surface, the plane surface, and the right side surface of the laser surveying instrument 200. Since the portion shown by the broken line in FIG. 16 has the same shape as the corresponding portion in FIG. 6 and the portion shown by the broken line in FIG. 17 has the same shape as the corresponding portion in FIG. 1, the description thereof will be omitted. The perspective views showing the back surface, the bottom surface, and the left side surface of the laser surveying instrument 200 are the same as those in FIG.

The characteristic point that the laser surveying instrument 200 of FIGS. 16 and 17 differs from the laser surveying instrument 10 of FIGS. 1 to 13 is the solid line portion of the figure, and the locking formed on the upper surface 45A of the upper arm portion 45. Only the shape of the part 64. That is, compared to the rod-shaped locking portion 58 shown in FIGS. 1 to 13, the locking portion 64 in FIGS. 16 and 17 is formed longer within a range that does not protrude from the upper surface 45A. Further, the width W4 of the locking portion 58 is also wide, and the upper surface 45A has a continuous waveform as if it were a continuous waveform. Even in such an embodiment, it is possible to prevent the laser surveying instrument 200 from rotating when the handle 40 is gripped by locking the thumb fingertip. The shape of the upper surface 45A other than the locking portion 64 is the same as that of the laser surveying instrument 10 of FIGS. 1 to 13.

[Third modification example]
Next, the laser surveying instrument 300 according to the third modification of the above-described embodiment will be described with reference to FIGS. 18 to 21. FIG. 18 is a plan view of the laser surveying instrument 300, FIG. 19 is a perspective view showing the front surface, the plane and the right side surface of the laser surveying instrument 300, and FIG. 20 is a schematic BB cross section near the upper surface of the upper arm portion 45 of FIG. FIG. 21 is a schematic CC cross section in the DD portion of FIG. 18, and is a schematic view of the upper surface 45A of the upper arm portion 45. Since the portion shown by the broken line in FIG. 18 has the same shape as the corresponding portion in FIG. 6 and the portion shown by the broken line in FIG. 19 has the same shape as the corresponding portion in FIG. 1, the description thereof will be omitted. The perspective views showing the back surface, the bottom surface, and the left side surface of the laser surveying instrument 300 are the same as those in FIG.

The characteristic point that the laser surveying instrument 300 of FIGS. 18 to 21 differs from the laser surveying instrument 10 of FIGS. 1 to 13 is the solid line portion in the figure, and only the shape of the upper surface 45A of the upper arm portion 45. That is, a concave portion 68 is formed on the upper surface 45A of the upper arm portion 45 in the drawing. The concave portion 68 is a portion where the upper surface 45A is recessed, and as shown in FIG. 21, the bent portion 40b side thereof is the direction R1 in which the interphalangeal joint KS is bent by the abdomen ahead of the interphalangeal joint KS of the thumb TH. It is said that the pressed portion 68A is pressed against. The pressed portion 68A is curved in a state where the interphalangeal joint KS of the thumb TH is bent, corresponding to the shape from the bent portion THc in the abdomen of the thumb TH to the most bulging portion THb on the fingertip side. .. Therefore, even in such an embodiment, the rotation of the laser surveying instrument 300 when the handle is gripped can be effectively prevented. Moreover, on the bent portion 40b side of the concave portion 68, as shown in FIG. 20, the inner side surfaces 68B and 68B in the width direction are locked with the side surface of the thumb, which enhances the feeling of close contact with the thumb. be able to. The convex locking portion 58 formed on the inner bottom surface of the concave portion 68 is the same as the locking portion 58 described with reference to FIGS. 1 to 13.

[Fourth modification]
Next, the laser surveying instrument 400 according to the fourth modification of the above-described embodiment will be described with reference to FIGS. 22 to 25. 22 is a plan view of the laser surveying instrument 400, FIG. 23 is a perspective view showing the front surface, the plane and the right side surface of the laser surveying instrument 400, and FIG. 24 is a schematic EE cross section in the vicinity of the upper surface of the upper arm portion 45 of FIG. FIG. 25 is a schematic FF cross section in the GG portion of FIG. 22, and is a schematic view of the upper surface 45A of the upper arm portion 45. Since the portion shown by the broken line in FIG. 22 has the same shape as the corresponding portion in FIG. 6 and the portion shown by the broken line in FIG. 23 has the same shape as the corresponding portion in FIG. 1, the description thereof will be omitted. The perspective views showing the back surface, the bottom surface, and the left side surface of the laser surveying instrument 400 are the same as those in FIG.

The characteristic point that the laser surveying instrument 400 of FIGS. 22 to 23 differs from the laser surveying instrument 300 of FIGS. 18 to 21 is the solid line portion in the figure, and only the shape of the locking portion 75 in the concave portion 68. .. That is, as described above, in the laser surveying instrument 400, a concave portion 68 is formed on the upper surface 45A of the upper arm portion 45, and a dot-shaped locking portion 75 instead of a rod shape is formed on the inner bottom portion thereof. There is.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of claims.
For example, in the above-described embodiment and its modifications, the locking portions 58, 62, 64, and 75 that engage with the thumb are all convex portions protruding from the upper surface of the support arm portion, but the present invention is not limited to this. It may be a recess.
Further, in the above embodiment, the laser floodlight is housed in the main body of the housing, but the laser floodlight may be arranged in the head of the housing. Further, among the support arm portions 41, the lower arm portion 46 may not necessarily be present.

10,100,200,300,400 ... Laser surveying instrument, 30 ... Housing, 32 ... Housing body (main body), 33 ... Head, 40 ... Handle, 41 ...・ Support arm part, 42 ・ ・ ・ Grip part, 45A ・ ・ ・ Upper surface of support arm part (upper arm part), 45B ・ ・ ・ Lower surface of support arm part (upper arm part), 50 ・ ・ ・ Convex part , 53, 68A ... Pressed part, 58, 62, 64, 75 ... Locking part, 59 ... First protective part, 60 ... Second protective part, 70 ... Protection Member, TH ... thumb, KS ... thumb interphalangeal joint, S2 ... space

Claims (5)

A laser surveying instrument provided with a housing having a handle protruding from the outer surface and a laser floodlight provided in the housing, and performing a survey using a laser beam emitted from the laser floodlight.
The handle has a grip portion that is gripped by fingers and a support arm portion that supports the grip portion on the housing.
The support arm portion has an upper surface on which the thumb can be placed and a lower surface on which the index finger can be brought into contact with the grip portion held by at least the index finger.
On the grip portion side of the upper surface, a pressed portion is formed so that the abdomen ahead of the interphalangeal joint of the thumb presses the interphalangeal joint in the bending direction .
The surface of the pressed portion pressed by the thumb is a direction approximated to a direction orthogonal to the tangent line passing through the center of gravity on the virtual circumference centered on the contact portion, which is the portion where the index finger abuts on the lower surface. In the state where the interphalangeal joint of the thumb is bent, it is curved corresponding to the shape from the bent part to the most bulging part on the fingertip side in the abdomen. A featured laser surveying instrument. The concave or convex locking portion that is arranged on the upper surface and is locked to the thumb is not formed on the pressed portion, whereas the housing side of the pressed portion on the upper surface is closer to the pressed portion. The laser surveying instrument according to claim 1, wherein the laser surveying instrument is formed in the above. The contact portion, which is a portion of the lower surface where the index finger can be contacted, is between the proximal interphalangeal joint and the distal interphalangeal joint on the side surface of the index finger when the grip portion is gripped by the index finger. The laser surveying instrument according to claim 1 or 2 , wherein the laser surveying instrument is bulged so as to press the swelling. The housing is provided with a protective member that projects outward from the outer surface on the opposite side of the handle to reduce the impact on the outer surface when dropped.
The protective member is composed of a first protective portion and a second protective portion which are continuously provided so as to provide a space between them, and both the first protective portion and the second protective portion are used together. The laser surveying instrument according to any one of claims 1 to 3 , wherein the outer surface exposed from the space portion is formed so as not to come into contact with the table when it is brought into contact with a flat table. On the side surface of the housing, a recess portion is formed which is recessed inward corresponding to the position of the grip portion and in which a part of the finger holding the grip portion is accommodated.
The recessed portion has a curved portion that is curved inward in a region adjacent to the side surface of the housing that is not recessed.
The radius of curvature of the curved portion on the opposite side of the pair of grip portions is larger than that of the curved portion on the side between the pair of grip portions.
The laser surveying instrument according to any one of claims 1 to 4.

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