JPH0716964Y2 - Structure of card insertion part in surveying instrument - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a surveying instrument such as an electronic total station or an electronic theodolite, and in particular, a memory card is inserted into a card insertion portion provided in a casing of the surveying instrument. The present invention relates to a card insertion part structure in a surveying instrument that can record surveying data from the surveying instrument on a memory card by wearing it.

[Prior Art] FIG. 9 shows an electronic total station, which is a kind of surveying instrument, and shows a conventional technique using a contact type memory card as a survey information recording medium. In this figure, the surveying instrument main body 4 is rotatably assembled on the leveling table 2, and the collimating telescope 6 is supported on the columnar portions 5, 5 of the surveying instrument main body 4. On one side surface of the lower part of the body casing of the surveying instrument body 4, there is provided a memory card insertion portion 7 that opens obliquely downward, and a card insertion opening 7a.
The contact type memory card 8 can be inserted and removed. A data transmission / reception section capable of exchanging data with the data transmission / reception section on the memory card side is provided in the memory card insertion section 7, and both sides are provided when the memory card 8 is inserted in the memory card insertion section 7. The transmitter / receiver of is held in contact, and data can be exchanged. Further, a spring member is provided in the card insertion portion 7, and when the insertion example of the memory card 8 is firmly inserted all the way, the spring member elastically supports the inserted memory card. However, when the memory card 8 is inserted upside down or upside down, the structure is such that it cannot be inserted properly. This makes it possible to confirm that the card is not inserted properly.

[Problems to be solved by the invention]

In the conventional card insertion part structure, the connector on the surveying instrument side for contacting the connector on the memory card side is exposed in the insertion part 7, but since the card insertion port 7a has no lid, There was a problem that rainwater and dust adhered to the connector and adversely affected the transmission of survey data. Further, since the memory card 8 inserted into the card insertion portion 7 is used in a state in which a part of the memory card 8 projects from the insertion port 7a, it is possible that rainwater or dust may have an adverse effect even during use.

In addition, the memory card is held by the spring member only when the specified insertion side end is firmly inserted all the way when inserting the card, but the card is inserted upside down or upside down. In such a case, even if the card 8 cannot be inserted to the predetermined insertion position, the card 8 may be held in the half-inserted state due to the friction between the relative sliding surface with the card insertion portion 7. For this reason, if you start preparing to operate the surveying instrument with the intention that the memory card is properly inserted, the memory card may drop from the card insertion part and fall due to vibration, etc., which may damage the memory card. There was also a problem that it might be lost.

The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to be effective against rainwater and dust, and a memory card having a card inserted into the insertion port will not fall from the card insertion portion. At the same time, it is another object of the present invention to provide a card insertion part structure in a surveying instrument that can confirm whether or not the memory card has been inserted to an appropriate position when inserting the memory card.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, in the structure of the card insertion part of the surveying instrument according to claim 1, a card insertion part opening to the lower part of the body casing of the surveying instrument is provided, and the surveying is performed by a vertical sliding motion. A card insertion part structure in a surveying instrument capable of inserting and removing a memory card, which is an information recording medium, in the card insertion part, and a card insertion opening of the card insertion part, for preventing the inserted memory card from falling, An oscillating opening / closing card cover that is spring-biased in the closing direction is provided.

In the structure of the card insertion portion in the surveying instrument according to claim (2), the card insertion portion is provided in the columnar portion which is the telescope support portion of the surveying instrument.

In the structure of the card insertion part of the surveying instrument according to claim (3), at least a part of the card cover is transparent or semi-transparent so that the inside of the card cover can be seen through from the outside.

In the structure of the card insertion portion of the surveying instrument according to claim (4), when the memory card is properly inserted into the card insertion opening of the card insertion portion, the card cover stores and holds the lower end portion of the memory card. It is something that is done.

[Action]

According to claim (1), even if the memory card falls off from the card insertion portion, the card cover, which is spring-biased in the closed state at the card insertion opening, prevents the memory card from falling downward. The card cover also prevents rainwater and dust from entering the card slot.

In the claim (2), the keyboard and the display of the electronic surveying instrument are generally arranged in front of the surveying instrument, but the keyboard and the display are provided by providing the memory card insertion portion in the columnar portion. You can eliminate the restrictions on placing it in front of.

According to claim (3), since the inside of the card cover can be seen through, it can be seen at a glance whether or not the memory card is inserted, and the title name and the like written on the memory card can be easily confirmed.

According to claim (4), when the memory card is not inserted to the proper position of the card insertion portion, the card cover does not hit the downward protruding portion of the memory card and is not closed, thereby notifying that the insertion of the memory card is insufficient.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of an electronic total station which is an embodiment of the present invention, FIG. 2 is a perspective view showing a card insertion portion, which is a main part of the present invention, and FIG. 3 is a card insertion portion. FIG. 4 is a longitudinal sectional view, FIG. 4 is an explanatory view for explaining the movement of the card cover, FIG. 5 is a sectional view showing a locked state of the memory card in the card insertion portion, and FIG. 6 is a block diagram showing an internal circuit of the theodolite. FIG. 7 is a block diagram showing the internal circuit of the memory card.

In these drawings, reference numeral 10 is a surveying instrument main body mounted on a tripod (not shown) via a leveling table 12, and the surveying instrument main body 10
Is a columnar portion 14 rotatable about the vertical axis with respect to the leveling table 12,
The collimation telescope 16 is rotatable with respect to the columnar portion 14 about a horizontal axis. A keyboard 18 for selecting surveying data and a display unit 20 for displaying the surveying data are arranged at the bottom of the surveying instrument body 10. The columnar portion 14 is provided with a memory card insertion portion 30 that opens downward, and the memory card 50 can be inserted and removed through a card insertion opening 32 that opens downward.

As shown in FIGS. 2 and 3, the memory card insertion portion 30 has a structure in which a space S into which the memory card 50 can be inserted is provided in the insertion portion casing 31 which is a part of the machine body casing. , When the memory card 50 is properly inserted, the stopper 34 protruding into the space S will hit the tip of the card, and the card cover 40 provided in the card insertion opening 32 will be in a closed state. Has become. A leaf spring 36 is screwed to the back surface of the insertion portion casing 31, and the memory card 50 is pressed by the leaf spring 36 toward the main body of the surveying instrument and held at this position. Further, in the insertion portion casing 31, a synthetic resin locking member 38 in which a projection 38a for confirming the correctness of the insertion direction and an elastic locking piece 38b are integrated, and a synthetic resin in which only the elastic locking piece 39b is formed. Locking members 39 are arranged to face each other. Meanwhile, memory card
A notch 52 that can be engaged with the protrusion 38a on the card insertion portion side is formed on one side of the insertion side of the card body of 50, and the card insertion side locking pieces 38b are formed on both left and right sides of the card body. , 39b
Notches 53, 53 that can be engaged with are formed so that the memory card 50 cannot be inserted to the proper position when the memory card 50 is inserted incorrectly. The pair of locking pieces 38b,
Held by 39b.

The card cover 40 is large enough to cover the downward protrusion of the memory card 50 inserted into the card insertion slot 32, and swings around the hinge 42 provided at the edge of the card insertion slot to open and close. Ready to work. The hinge portion 42 has a thick columnar edge portion 43a of the hinge plate 43 screwed to the surface of the casing 31, a notch forming edge portion 44a on the cover side is engaged, and both edge portions 43a, 44a are pin-connected. In the structure, the hinge plate side columnar edge 43a and this columnar edge 43a
Opposing slits 43a _1, 43b ₁ of each of the back between the cover side the thick edge portion 43b which opens on the opposite side of the formed tip to opposite edges 43a, each of the slits 43a ₁ is between 43b, 43b ₁ to A leaf spring 48 having a U-shaped cross section in which the hook portions 48a and 48b are locked.
Is installed. The tip hook portions 48a and 48b of the leaf spring 48 are elastic bodies that are biased in directions toward each other (direction A in FIG. 4), and the tip hook portion 48a of the leaf spring 48 rotates in a direction in which the card cover 40 opens. Even so, it has a curved shape that does not easily come off from the slit 43a ₁ . The action point of the spring force by the leaf spring tip portions 48a, 48b is arranged in a triangular shape in cooperation with the pin fulcrum of the hinge portion 42 as shown in FIG. 4, and the card cover 40 is closed, That is, when the cover peripheral portion 41 is in contact with the casing, the cover 40 is urged in the clockwise direction (arrow B direction) in FIG. 4 about the hinge 42. Therefore, the locking of the memory card 50 in the card insertion portion 30 is insufficient, and even if the memory card 50 tries to drop downward, the lower end of the memory card is carried from below by the spring-biased card cover 40.
There is no danger of the memory card falling down. Further, when the cover 40 is opened halfway, the spring engagement point (spring tip hook portion) 48b on the cover side passes through the spring engagement point (spring tip hook portion) 48a on the card insertion side and the hinge 42. l
When it reaches the extension line position of, the spring biasing force of the leaf spring 48 becomes maximum, and when it reaches a position beyond this position (position shown in phantom line in FIG. 4), it is formed by the action point of the spring force and the pin fulcrum of the hinge part. Since the triangle is formed on the opposite side of the hinge 42, the fourth
The spring force of the leaf spring 48 acting in the direction of arrow A _{1 in the} figure acts in the direction of opening the cover 40 (direction of FIG. 4C). The cover 40 is held in this state by the spring force of the leaf spring at the position where the tip 43c of the thick edge on the cover side contacts the upper surface of the casing 31. Therefore, when the cover 40 is opened up to the position shown by reference numeral l in FIG. 4, the cover 40 is automatically opened by the spring action of the leaf spring 48, and the cover 40 holds the insertion opening 32 in the open state. To do.

The card cover 40 is made of a semitransparent resin having a color similar to that of the columnar portion 14 on the surveying instrument main body side.
Except for the area indicated by 44, the outer surface is textured to make it inconspicuous even if scratched. In addition, the inside of the cover can be seen through the untextured region 44, and it is possible to see at a glance whether the memory card 50 is inserted or not without opening the cover 40.
You can easily check the title, etc. on the card. Reference numeral 45 denotes a finger hook portion for opening and closing the cover, which is formed on both right and left sides of the cover 40, and does not slip even if the fingertip is wet. Further, reference numeral 46 is a pair of abutting portions which are formed so as to project inside the cover, and when the memory card 50 is inserted in an appropriate position, as shown in FIG. Although it does not interfere with the lower edge of the card, if the memory card 50 is not inserted in the proper position, it cannot contact the lower edge of the card to close the cover 40. You can

Next, the internal circuit of the theodolite and the internal circuit of the memory card will be briefly described with reference to FIGS. 6 and 7.

Reference numeral 101 is a signal processing circuit, and the measurement data from the signal from the light transmitting / receiving sensor (for example, theodolite installation point) to the measuring point is processed by this signal processing circuit, and this processing data is sent to the central processing mounting unit (CPU) 102. Then, the storage operation processing is performed. Further, the signal from the horizontal angle sensor is sent to the vertical axis encoder signal processing unit 103, and the signal from the altitude angle sensor is sent to the horizontal axis encoder signal processing unit 104 for processing, and the angle measurement data from these signal processing units 103 and 104 are also processed. It is sent to the CPU 102. Then, the survey data (survey, angle measurement data) from the CPU 102 is sent to the signal transmitting / receiving unit 105, and desired survey data can be written in the memory card 50. Reference numeral 18 is a keyboard, and the survey data from the CPU 102 can be displayed on the display unit 20 via the display control unit 107 by a predetermined key operation.

The memory card 50 includes a signal transmitting / receiving unit 115 capable of transmitting / receiving to / from the signal transmitting / receiving unit 105 of the surveying instrument, a signal processing unit 112 that receives and processes a signal from the signal transmitting / receiving unit 115, and a signal from the signal processing unit 112. The memory 113 includes a data conversion unit 114 that allows reading and writing. When the memory card 50 is properly inserted into the card insertion part 30, the signal transmission / reception part 115 on the card side does not come into direct contact with the signal transmission / reception part 105 on the surveying instrument side, but is in an electromagnetically exchangeable position. . Then, the survey data is written to the memory card 50 by operating the keyboard.

FIG. 8 is a sectional view of the essential parts of the second embodiment of the present invention.
The difference is that a tension coil spring is used as a spring member that biases the card cover in the closing direction.

In the above-mentioned embodiment, the contactless card capable of exchanging data when the transmitter / receiver on the surveying instrument side and the transmitter / receiver on the memory card side are in a non-contact state has been described. The same can be applied to a contact-type memory card that is in a state.

[Effect of device]

As is clear from the above description, according to the card insertion part structure according to claim (1), the card cover, which is spring-biased in the closed state at the card insertion opening, prevents the memory card from falling downward. Therefore, the problem that the memory card is dropped and damaged or lost is eliminated. In addition, the card cover prevents rainwater and dust from entering the card slot, allowing smooth and accurate data exchange between the surveying instrument and the memory card.

According to the card insertion part structure according to claim (2), since the memory card insertion part is provided in the columnar part, there is no restriction in arranging the keyboard and the display on the front surface of the surveying instrument and it is free. Can be layout.

According to the card insertion portion structure of the third aspect, the inside of the card cover can be seen through, which makes it easy to see at a glance whether or not the memory card is inserted.

According to the structure of the card insertion part according to claim (4), unless the memory card is inserted up to the proper position of the card insertion part, the card cover does not hit the downward protruding part of the memory card to close, and thereby the operator It can be seen that the memory card is not fully inserted, the card can be inserted in the proper state, and the problem of carrying out the insertion of the card is eliminated.

[Brief description of drawings]

FIG. 1 is a perspective view of an electronic total station which is an embodiment of the present invention, FIG. 2 is a perspective view showing a card insertion portion, which is a main part of the present invention, and FIG. 3 is a card insertion portion. FIG. 4 is a longitudinal sectional view, FIG. 4 is an explanatory view for explaining the movement of the card cover, FIG. 5 is a sectional view showing a locked state of the memory card in the card insertion portion, and FIG. 6 is a block showing an internal circuit of the theodolite. FIG. 7 is a block diagram showing the internal circuit of the memory card, and FIG. 8 is an enlarged schematic view of a part of a card cover which is a part of the second embodiment of the present invention.
FIG. 9 is a perspective view of a surveying instrument having a conventional card insertion portion structure. 14 …… Column, 16 …… Telescope, 30 …… Card insertion part, 31
...... Insertion part casing that is part of the body casing of the surveying instrument, 32 ...... Card insertion slot, 40 ...... Card cover, 42 ...
… Hinge, 44 …… Non-textured area where the inside can be seen through,
46 …… Abutting part that is the protrusion on the card cover side, 48 …… A leaf spring that biases the card cover in the closing direction, 50 …… Memory card.

Claims (4)

[Scope of utility model registration request] 1. A surveying instrument in which a card insertion portion having a downward opening is provided in a body casing of the surveying instrument, and a memory card, which is a surveying information recording medium, can be inserted into and removed from the card insertion portion by a vertical sliding operation. A card insertion part structure, wherein a card opening of the card insertion part is provided with a swing-openable type card cover which is spring-biased in a closing direction for preventing the inserted memory card from falling. The card insertion part structure in the surveying instrument. 2. The card insertion part structure for a surveying instrument according to claim 1, wherein the card insertion part is provided on a columnar portion which is a telescope support of the surveying instrument. 3. A card insertion / mounting device for a surveying instrument according to claim 1, wherein at least a part of said card cover is formed of a transparent or translucent material so that the inside of said card cover can be seen through from the outside. Part structure. 4. The card cover stores and holds the lower end portion of the memory card when the memory card is properly inserted into the card insertion opening of the card insertion portion. ) Structure of the card mounting part in the surveying instrument described.