JP3161439U - Indicator - Google Patents

Abstract

Provided is a marking device in which an operator does not hit a hand with a hammer when a fastening member is driven into the marking device to mount a display plate. An indicator has an insertion hole 2a at the top 20 and a display plate 2 for identifying the indicator, and an insertion hole 30 that matches the insertion hole 2a is provided at the top 20. A fixing member 4 for attaching the display plate 2 to the top portion 20 is inserted into the insertion hole 30 through 2a, and the fixing member 4 is a head located outside the insertion hole 30 in a state of being inserted into the insertion hole 30. 4a and a shaft portion 4b positioned in the insertion hole 30 when inserted into the insertion hole 30, and the insertion hole 30 is located on the opening side of the shaft portion 4b of the fastening member 4 before insertion. A large-diameter portion 31 having a diameter S2 larger than the diameter S1 and a small-diameter portion 32 located on the back side and having a diameter S3 smaller than the diameter S1 of the shaft portion 4b of the fastening member 4 before insertion. Has been. [Selection] Figure 3

Description

  The present invention relates to a marking device used for marking information such as land boundaries and positions or buried objects.

  Conventionally, when performing a land ownership survey or the like, a marker such as a pile or a nail is used as a position display member. This indicator has a display plate attached with information such as the identification number and application of the indicator on the top surface exposed from the ground surface. An adhesive may be used for attaching the display plate, but it is desirable to use a fastening member such as a pin in order to ensure a reliable attachment. In addition, there are some which allow the operator to attach the display plate by hand by providing a locking portion that prevents the pin from being removed from the insertion hole or pin in the insertion hole or pin of the indicator (for example, Patent Documents). 1).

JP-A-2005-249508

  However, in the case of the above-mentioned Patent Document 1, it is desirable that the insertion hole into which the pin is inserted is formed in a resin-made pile, and when the peripheral portion of the insertion hole has a certain degree of flexibility, the insertion of the pin is performed. It is suitable for performing by the hand of a person. On the other hand, for example, when inserting a metal pin into an insertion hole of a metal member, it is difficult to insert the pin only by an operator's hand because both members do not have flexibility. It is necessary to drive the pin into the insertion hole using, for example. When driving in this way, the operator must attach one hand to the pin and keep hitting the pin with a hammer held in the other hand in order to maintain the posture of the pin. For this reason, a hand may be hit with a hammer.

  In view of the above, an object of the present invention is to provide a marking device in which an operator does not hit a hand with a hammer when a fastening member is driven into the marking device in order to mount the display plate.

  In order to achieve the above object, according to the present invention, there is provided a sign embedded in the ground so that at least a part thereof is exposed from the ground surface, and has an insertion hole at the top for identifying the sign. The display plate is installed, an insertion hole that matches the insertion hole is provided at the top, and a fastening member that attaches the display plate to the top is inserted into the insertion hole through the insertion hole. The member has a head portion located outside the insertion hole when inserted into the insertion hole, and a shaft portion positioned within the insertion hole when inserted into the insertion hole. Is located on the opening side and has a larger diameter than that of the fastening member before insertion, and has a diameter larger than that of the fastening member located on the back side before insertion. It consists of a small small diameter part.

  According to this configuration, the insertion hole is located on the opening side and has a large diameter portion that is larger than the diameter of the shaft portion of the fastening member before insertion, and the fastening hole before the insertion is located on the back side. Since it is comprised from the small diameter part whose diameter dimension is smaller than the diameter dimension of the axial part of a member, when attaching a display plate to the top part of an indicator, the following work procedures should be followed. That is, first, after placing the display plate on the top of the indicator, the operator manually inserts the shaft portion of the fastening member into the insertion hole. Here, the diameter of the large diameter portion is larger than the diameter of the shaft portion of the fastening member before insertion, but the diameter of the small diameter portion is smaller than the diameter of the shaft portion of the fastening member before insertion. The shaft portion of the inserted fastening member is inserted into the large diameter portion, but stops before the small diameter portion. In this state, the movement of the shaft portion of the fastening member is restricted by the large diameter portion, and the posture is maintained. Next, the operator hits the fastening member maintained in this manner with a hammer or the like, and the shaft portion of the fastening member is driven into the small diameter portion and inserted. At this time, since the posture of the shaft portion of the fastening member is maintained in the large diameter portion, it does not fall down. Therefore, the operator does not need to put his hand on the fastening member, and can perform driving without hitting his hand with a hammer or the like.

  Preferably, the difference between the diameter of the large-diameter portion and the diameter of the small-diameter portion is 1/20 to 1/6, more preferably 1/10 of the diameter of the small-diameter portion. That is, if the diameter dimension (diameter dimension) of the large diameter portion is S1, and the diameter dimension (diameter dimension) of the small diameter portion is S3, preferably (1/20) × S3 <(S1-S3) <(1/6). ) × S3, more preferably, (S1−S3) = (1/10) × S3. When the diameter dimension (diameter dimension) of the fastening member is S2, the relational expression of 1/3 <(S1-S2) / (S2-S3) <3 holds, and more preferably (S1- The relational expression of S2) / (S2-S3) = 1/2 holds. Within this range, the operator can insert the fastening member into the large-diameter portion without being forced by hand, while the posture of the fastening member thus inserted is maintained in the vertical direction and stopped. The wearing member does not fall down.

  The ratio of the length in the longitudinal direction between the large diameter portion and the small diameter portion is in the range of 1: 4 to 1: 2, preferably 1: 3. On the other hand, the shaft portion of the fastening member has a length of ½ or more with respect to the total length in the longitudinal direction of the insertion hole in which the length of the large diameter portion and the length of the small diameter portion are combined. Has a length of 7/10 to 9/10. In this range, since the length of the large diameter portion is secured to some extent, when the operator manually inserts the fastening member into the insertion hole, the posture of the fastening member is maintained in the large diameter portion, Since the length of the small diameter portion is also sufficient, the fastening member is reliably locked in the small diameter portion after the fastening member is driven with a hammer.

  In a preferred embodiment, the fastening member includes a head located outside the insertion hole when inserted into the insertion hole, and a shaft positioned within the insertion hole when inserted into the insertion hole. And at least a portion of the periphery of the shaft portion that is inserted into the small-diameter portion in a state of being inserted into the insertion hole. According to this embodiment, the diameter of the small diameter portion of the insertion hole is smaller than the diameter before insertion of the fastening portion, but the fastening member is formed with irregularities around the shaft portion of the fastening member. When the arm is driven into the small-diameter portion, the fixing member is inserted into the insertion hole while the convex and concave portions are deformed. Since the fastening member is inserted into the insertion hole in a state where the convex and concave portions are deformed as described above, the fastening member can be securely attached to the insertion hole to prevent the fastening member from being detached.

  In a further preferred embodiment of the present invention, the insertion hole is formed in a metal member.

  According to the marking device of the present invention, the insertion hole is located on the opening side and has a large diameter portion whose diameter is larger than the diameter of the fastening member before insertion, and the fastening hole before insertion is located on the back side. Since it is composed of a small-diameter part whose diameter is smaller than the diameter of the member, when inserting the fastening member into the insertion hole, insert the large-diameter part once to prevent the fastening member from falling down. Can be driven to a small diameter part with a hammer. Therefore, the operator can drive with a hammer without putting his / her hand on the fastening member, and does not hit the hand accidentally.

It is a perspective view of the indicator concerning 1st Embodiment of this invention. It is a longitudinal cross-sectional view of the indicator of FIG. (A)-(C) are the longitudinal cross-sectional views which expand and show the insertion-hole periphery of the indicator of FIG. 1, (A) is before inserting a fastening member, (B) is stopped by an operator's hand. (C) is a figure which each shows after inserting a fastening member with a hammer etc. after inserting a wearing member. It is a perspective view of the indicator concerning 2nd Embodiment of this invention. It is a longitudinal cross-sectional view of the indicator of FIG.

An embodiment of the present invention will be described with reference to the drawings.
The indicator A according to the first embodiment of the present invention shown in FIG. 1 is composed of a nail member 1 made of metal such as steel or stainless steel, which is embedded in the ground. The nail member 1 has a round bar-shaped bar 1a that is sharpened at the tip and is driven into the ground, and a disk-shaped head that is integrally provided on the top of the bar 1a and at least a part of which is exposed from the ground surface. 1b.

  As shown in FIG. 2, a recess 20a is formed in the top 20 of the nail member 1, and the display plate 2 is attached to the recess 20a. On the surface of the display plate 2, the identification number and use of the indicator A, the boundary display and division number of the land, the distance from the reference point, the information of the underground object, etc. are attached. The display plate 2 is made of a metal or resin having corrosion resistance such as aluminum or stainless steel, and can be any shape such as a circle and a polygon. In this embodiment, a circular plate is used, and the recess 20a is also formed in a circular shape in plan view.

  An insertion hole 30 extending in the longitudinal direction of the rod-shaped portion 1a of the nail member 1 is provided at the center of the circular recess 20a of the top portion 20, and an insertion hole 2a is formed at the center of the display plate 2. Yes. The insertion hole 30 and the insertion hole 2a are adapted to match each other when the display plate 2 is fitted into the recess 20a. The display plate 2 is attached to the top portion 20 of the nail member 1 by inserting the pin-shaped fastening member 4 into the insertion hole 30 from the insertion hole 2a.

3A to 3C, the structure of the insertion hole 3 will be described in more detail, and a series of operations for inserting the fastening member 4 will be described.
First, the configuration of each element before the display plate 2 is attached to the top 20 of the nail member 1 is shown in FIG. The insertion hole 30 of the nail member 1 includes a large diameter portion 31 located on the opening side and a small diameter portion 31 located on the back side. The ratio of the length in the longitudinal direction of the large diameter portion 31 and the small diameter portion 32 is, for example, 1: 3.

  The fastening member 4 inserted into the display plate 2 and inserted into the insertion hole 3 is made of metal such as steel or stainless steel, and has a head 4a having a diameter larger than the insertion hole 2a of the display plate, and the head. It is a pin shape which has the axial part 4b which extends from 4a and has a cylindrical shape provided with a sharpened portion. The fastening member 4 also has an uneven portion 4ba around the shaft portion 4b. The uneven portion 4ba is formed by, for example, a plurality of circumferential grooves or spiral thread grooves.

  The diameter dimension (diameter dimension) S2 of the large diameter part 31 of the insertion hole 3 of the nail member 1 is larger than the diameter dimension (diameter dimension) S1 of the shaft portion 4b of the fastening member 4 having such a configuration. The diameter dimension (diameter dimension) S3 of the small diameter part 32 of the small diameter part 32 of the insertion hole 3 is small. That is, the relational expression S2> S1> S3 holds.

  The nail member 1 is embedded in the ground so that at least a part of the head 1b is exposed to the ground surface. In this state, as shown in FIG. 3B, the operator attaches the display plate 2 to the recess 20a of the top 20 by hand. At the time of attachment, when the display plate 2 is fitted into the recess 20a, the insertion hole 2a matches the insertion hole 30 provided in the top portion 20 of the nail member 1. Next, the operator inserts the fastening member 4 into the insertion hole 30 by hand. Here, since the diameter S2 (FIG. 3A) of the large-diameter portion 31 of the insertion hole 30 is larger than the diameter S1 of the shaft portion 4b of the fixing member 4 (FIG. 3A), the fixing member 4 is inserted into the large-diameter portion 31 of the insertion hole 30. However, the diameter S3 (FIG. 3A) of the small-diameter portion 32 of the insertion hole 30 is smaller than the diameter S1 (FIG. 3A) of the shaft portion 4b of the fastening member 4, and therefore, by the operator's hand. In the insertion, the small diameter portion 32 of the insertion hole 30 is not pushed in, but stops in front of it. At this time, since the movement of the fastening member 4 is restricted by the large diameter portion 31, the posture is maintained without falling down. The diameter S2 of the large-diameter portion 31 of the insertion hole 31 is larger than the diameter S1 of the shaft portion 4b of the fastening member 4, but the movement of the shaft portion 4b of the fastening member 4 is not too large. The size is such that it can be regulated and prevented from falling.

  Next, the operator hits the fastening member 4 maintained in this manner with a hammer or the like, and the head 4a of the fastening member 4 hits the upper surface of the display plate 2 as shown in FIG. Until the shaft portion 4b of the fastening member is fitted into the small diameter portion 32. At the time of this driving, since the posture of the fixing member 4 is maintained in the large diameter portion 31 of the insertion hole 30, it does not fall down. Therefore, the operator does not need to put a hand on the fastening member 4 and does not hit the hand with a hammer or the like.

  Since the fixing member 4 has an uneven portion 4ba formed around the shaft portion 4b, the diameter S3 of the small diameter portion 32 of the insertion hole 30 (FIG. 3A) is the shaft portion 4b of the fixing member 4. Although it is smaller than the diameter dimension S1 (FIG. 3 (A)), the insertion is facilitated. Further, due to the relationship of the diameters, the fixing member 4 is unlikely to be detached from the insertion hole 30 after the fixing member 4 is mounted in the insertion hole 30.

  FIG. 4 shows an indicator B according to a second embodiment of the present invention. In the present embodiment, the indicator B includes a flat truncated cone-shaped seat member 50 that supports the display plate 2, and a nail member 1A that locks the seat member 50 on the ground. The seat member 50 is formed of, for example, a metal such as brass or aluminum, a resin, or the like. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 5, the seat member 50 is formed with a stepped recess 51, and an insertion hole 52 is provided at the center of the recess 51. The stepped recess 51 has a small-diameter recess 51a having a small diameter located on the insertion hole 52 side and a large-diameter recess 51b having a large diameter facing the outside. The nail member 1A is inserted into the insertion hole 52, and the indicator B can be installed on the ground by applying the head 1Ab of the nail member 1A to the bottom surface of the small-diameter recess 51a of the recess 51. . The large-diameter recess 51b of the seat member 50 is to which the display plate 2 is attached.

  Similarly to the nail member 1 in the first embodiment, the nail member 1A of the present embodiment is made of metal such as steel or stainless steel, and the top portion 20 has an insertion hole 30 extending in the longitudinal direction of the nail member 1A. Is provided. The insertion hole 30 and the insertion hole 2a of the display plate 2 match each other when the display plate 2 is fitted into the large-diameter recess 51b of the recess 51 of the seat member 50. By inserting the fastening member 4 into the insertion hole 30 of the nail member 1A from the insertion hole 2a of the marking plate 2, the display plate 2 is attached to the top 20 of the nail member 1A of the marking device B. The structure of the insertion hole 30 of the nail member 1A is the same as that of the first embodiment, and the series of operations for inserting the fastening member 4 is also described with reference to FIGS. 3 (A) to 3 (C). Applied.

  In the above embodiments, the nail member 1 (1A) having the insertion hole 30 into which the fastening member 4 is inserted has been described as being made of metal such as steel or stainless steel, but may be made of any member. However, the configuration of the insertion hole 30 having the large-diameter portion 31 and the small-diameter portion 32 is particularly suitable for a member that is small in flexibility and requires driving with a hammer or the like.

  Further, in each of the above embodiments, the insertion hole 30 is formed in the nail member 1 (1A). However, the insertion hole 30 may be formed in any member constituting the indicator, for example, a large-diameter portion on a cap of a pile. An insertion hole 30 having 31 and a small diameter portion 32 may be formed.

2 Display plate 2a Insertion hole 4 Fastening member 20 Top part 30 Insertion hole A (B) Indicator

Claims (3)

A sign that is buried in the ground so that at least a portion is exposed from the ground surface,
At the top, there is a display plate with an insertion hole to identify the indicator,
An insertion hole that matches the insertion hole is provided at the top,
A fastening member for attaching the display plate to the top is inserted into the insertion hole through the insertion hole,
The fastening member has a head located outside the insertion hole in the state inserted into the insertion hole, and a shaft portion located in the insertion hole in the state inserted into the insertion hole,
The insertion hole is located on the opening side and has a large-diameter portion whose diameter is larger than the diameter of the shaft portion of the fastening member before insertion, and the shaft of the fastening member before insertion that is located on the back side. The indicator comprised from the small diameter part whose diameter dimension is smaller than the diameter dimension of a part.   2. The indicator according to claim 1, wherein unevenness is formed in at least a portion of the periphery of the shaft portion that is inserted into the small diameter portion in a state of being inserted into the insertion hole.   The indicator according to claim 1 or 2, wherein the insertion hole is formed in a metal member.

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