JP3208283U - bolt - Google Patents

Abstract

[PROBLEMS] To remove a member attached via a bolt / nut in a state where it has been moved from the attachment posture and the hand cannot be acceleratorped to the head of the bolt and cannot be locked and rotated. Furthermore, it is to provide a bolt that enables the engagement between the bolt and the nut to be reliably released. A bolt according to the present invention includes a head portion on which a first locking portion is formed, and a screw portion integrally connected to the head portion coaxially and having a screw threaded on the outer periphery. And a second locking portion is formed at the tip of the screw portion. [Selection] Figure 1

Description

  The present invention relates to a bolt for fixing at least two members to each other according to the engagement state of the bolt and nut.

  Conventionally, it is one of the fixing techniques that has been used for a long time to utilize the engagement state of a bolt-nut assembly in order to fix at least two members to each other. The bolts and nuts can be engaged and disengaged with each other with one of the bolts and nuts locked with a locking tool such as a spanner or a wrench (the other is locked), and the other with another locking tool such as a spanner or wrench. Used to rotate. This is because if one of the bolts and nuts is not locked, when the other is rotated, neither can be tightened or loosened together.

  The applicant of the present application has already registered a utility model of the “tilting opening / closing drive device” shown in Patent Document 1, and has introduced a device that can be expected to have a great effect as a technology capable of automatically opening and closing the tilting that is a heavy object. It is what is offered.

  Utility Model Registration No. 3202670

  In the above-described prior art, an opening / closing mechanism capable of automatically opening / closing a tilt which is a heavy object is provided, and the upper end of the drive arm 22 for rotating the tilt H is connected. The supported spindle 22A is rotatably attached to an attachment member, and this attachment member is fixed to the tilt H through bolts and nuts. As shown in FIG. 2 of Patent Document 1, in the state in which the tilting H stands up, the outer surface of the tilting H can be accessed from the outside of the track A, and the inner surface of the tilting H can be accessed from the track A. Access is possible from the cargo compartment side, and as a result, the bolts and nuts can be tightened or loosened in the locked state as described above.

  Here, as shown in FIG. 3 of Patent Document 1, the bottom of the truck A is placed at the lower end of the truck A due to the limitation of the space below the luggage compartment, with the tail H being rotated to the suspended position, that is, vertically downward. In some cases, it may be brought into a state immediately above a base frame (not shown in FIG. 3) for attaching auxiliary equipment arranged below the cargo compartment, and thus the tilting H is opened to the lower side. In the state, for example, if a tilt opening / closing drive device arranged below the cargo compartment fails and needs to be repaired, the bolts and nuts that have attached the mounting members to the tilting H are loosened to each other. Therefore, the attachment member must be removed from the tilting H.

  In addition, it becomes possible to access the outer surface of the tilting H from the outside of the track A, and one of the bolts and nuts exposed on the outer surface can be locked, however, it is exposed on the inner surface of the tilting H. On the other side of the bolts and nuts, the lower end of the tilt hole H reaches directly above the auxiliary equipment mounting frame, so that there is no room for the operator's hand to enter the lower part of the cargo room, and it is practically accessible. Impossible. That is, in the state where the tilt H is opened downward, a problem that makes it difficult to repair the malfunction of the tilt opening / closing drive device has emerged.

  This device has been made in view of the above-described circumstances, and when a member attached via a bolt / nut is removed in a state of being moved from the attachment posture, the hand cannot be accelerated to the head of the bolt. It is an object of the present invention to provide a bolt that can reliably disengage a bolt and a nut even in a situation where it cannot be locked and rotated.

  In order to solve the above-described problems and achieve the object, a bolt according to the present invention is characterized in that, according to claim 1, a head on which a first locking portion is formed and a coaxial on the head. And a screw portion having a screw threaded on the outer periphery thereof, and a second locking portion is formed at the tip of the screw portion.

  By constructing the bolt as defined in claim 1 in this way, when the member attached via the bolt and nut is removed in a state where it is moved from the attachment posture, the hand can be accelerated to the head of the bolt. Even in a situation where the bolt cannot be rotated without being locked, the engagement of the bolt and nut can be reliably released.

  According to a second aspect of the present invention, there is provided a bolt according to claim 2, wherein the head is formed in a thin disk shape, and the first locking portion is a hexagon opening on the surface of the head. It is characterized by being defined from the hole.

  By configuring the bolt as defined in claim 2 as described above, it can be applied to a low head bolt with a hexagon socket.

  According to a third aspect of the present invention, in the bolt according to the third aspect, the head is formed in a substantially hemispherical shape, and the first locking portion is formed at the top of the substantially hemispherical head. It is characterized by being defined from a positive or negative shaped locking groove.

  Thus, by comprising a volt | bolt as prescribed | regulated to Claim 3, it becomes possible to apply to the volt | bolt which a plus or minus driver can apply.

  According to a fourth aspect of the present invention, in the bolt according to the fourth aspect, the head is formed to be thick, and the first locking portion is defined by a hexagon head to which a spanner is fitted. It is characterized by that.

  Thus, by constituting the bolt as defined in claim 4, it is possible to apply to the hexagon bolt.

  According to a fifth aspect of the present invention, the bolt is characterized in that the second locking portion is defined by a hexagonal hole that opens at the front end surface of the screw portion.

  By configuring the bolt as defined in claim 5 as described above, regardless of the form of the head of the bolt, the tip of the screw portion opposite to the head can be easily and It can be reliably locked.

  According to a sixth aspect of the present invention, in the bolt according to the sixth aspect, the second locking portion is defined by a plus or minus locking groove formed on the front end surface of the screw portion. It is characterized by being.

  Thus, by constituting the bolt as defined in claim 6, regardless of the form of the head of the bolt, the tip of the screw portion opposite to the head is used with a plus or minus screwdriver. Thus, it can be easily and reliably locked.

  According to a seventh aspect of the present invention, the second locking portion is defined by a hexagonal bolt-shaped projection formed integrally with the end surface of the screw portion. It is characterized by that.

  In this way, by configuring the bolt as defined in claim 7, regardless of the form of the head of the bolt, the tip of the screw portion opposite to the head can be simplified using a spanner or a wrench. And it can be surely locked.

  As described above, according to the present invention, when a member attached via a bolt / nut is removed in a state of being moved from the mounting posture, the hand cannot be accelerated to the bolt head and locked to this. Thus, even in a situation where it cannot be rotated, a bolt capable of reliably releasing the engagement of the bolt and nut is provided.

  The structure of the volt | bolt of one Example concerning this invention is shown, (A) is a top view, (B) is a front view, (C) is a bottom view.   FIG. 2 is a front view showing an example of a mounting state using the bolt shown in FIG. 1 with a partial cross section in a state in which a tilt is raised, that is, in a state where a loading platform of a truck A is closed.   FIG. 3 is a front view showing a state in which the tilt is rotated to a vertically lower position from the attachment state shown in FIG.   It is a front view which shows the aspect which rotates a nut, locking a volt | bolt using a hexagon wrench from the attachment state shown in FIG. 3, and cancel | releases the engagement state of a volt | bolt nut.   It is a front view which shows the aspect which removes a volt | bolt from the state shown in FIG. 5, and can remove an attachment member from a tilt.   It is a front view which shows the structure of the 2nd Example of the volt | bolt concerning this invention.   It is a front view which shows the structure of the 3rd Example of the volt | bolt concerning this invention.   It is a front view which shows the structure of the 4th Example of the volt | bolt concerning this invention.

  Hereinafter, embodiments of a bolt according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows the configuration of an embodiment of the bolt 10 of the present invention. The bolt 10 of this embodiment constitutes one element of a connector for removably fixing two or more members together with a nut 12 (shown in FIGS. 2 to 5). As shown in FIG. 1, the bolt 10 includes a head portion 14, more specifically, a head portion 14 formed in a thin circular shape in this embodiment, and the head portion 14 coaxially and integrally therewith. The screw portion 16 is connected to the outer periphery and is threaded with a screw groove 16A. Here, the head portion 14 is formed with a hexagonal hole 18 as a first locking portion for locking or rotating the head portion 14 so as to be coaxial and open to the end surface of the head portion 14. Yes.

  On the other hand, the tip of the screw portion 16 described above is a feature that characterizes the present invention. A hexagonal hole 20 as a second locking portion for locking or rotating the screw portion 16 is coaxial, And it is formed in the state opened to the front end surface of the screw part 16. That is, the hexagonal holes 18 and 20 are coaxially formed at both ends of the bolt 10. The sizes of the hexagonal holes 18 and 20 may be the same or different from each other. In short, the size is not a problem, and the hexagonal holes themselves need only be provided as locking portions. It is.

  A connection / release mode for detachably connecting two members using the bolt 10 and the nut 12 configured as described above will be described in detail with reference to FIGS. In addition, in the reference numerals used in FIG. 2 to FIG. 5, members represented by alphabets up to “J” and numbers having a size of “22” or more are filed by the same applicant as the applicant of the present utility model registration, This is the same as the member used in Utility Model Registration No. 3202670 used as Patent Document 1 in the description of the prior art, and detailed description thereof is omitted here.

  First, a tilt H is attached to a base frame F that holds the periphery of the floor of the cargo compartment of the truck A via a hinge G so as to be rotatable. Although this tilt H is not shown in detail, it is automatically opened and closed by the tilt opening / closing drive device, and the drive arm 22 constituting this tilt opening / closing drive device is attached to the mounting member K via the support shaft 22A. It is connected to. When the drive arm 22 is pulled downward and inward from the closed state shown in FIG. 2 according to the operation of the tilt opening / closing drive device, the drive arm 22 rotates around the hinge G in the counterclockwise direction in the drawing, and the cargo compartment 3 is gradually opened, and as shown in FIG. 3, under the frame F, the tilting H is set to be brought into an open state in a vertically lower state while being most retracted inside the track A. Yes.

  Here, the mounting member K and the tilting H are defined as two members that are detachably connected to each other by the bolt 10 and the nut 12 in this embodiment.

  As shown in FIG. 2 again, the mounting member K and the tilting H as the objects to be connected are formed with insertion holes KA and HA through which the bolt 10 of this embodiment is inserted. The insertion hole KA formed in the attachment member K is set so as to be smaller than the head portion 14 of the bolt 10 and have an inner diameter larger than the outer diameter of the screw portion 16. Further, the insertion hole HA formed in the tilt H is set so as to be smaller than the nut and have an inner diameter larger than the outer diameter of the screw portion 16.

  That is, when attaching the mounting member K to which the drive arm 22 is connected to the tilt hole H, the screw portion 16 of the bolt 10 is tracked with the insertion hole KA of the mounting member K and the insertion hole HA of the tilt H aligned with each other. It is inserted into the insertion hole KA of the attachment member K from the outside of A, and subsequently inserted into the insertion hole HA of the hinge H, so that the tip of the screw part 16 protrudes from the hinge H. In this state, the nut 12 is screwed to the tip of the screw portion 16 from the cargo compartment side of the track A. This screwing operation forms the head portion 14 of the bolt 10 on the outside of the track A. A hexagonal wrench (not shown) is inserted into the hexagonal hole 18 serving as the first locking portion and locked, and the nut 12 is engaged with the wrench or spanner inside the truck A, that is, on the cargo compartment side. Stop and rotate the hex wrench and / or spanner to tighten the bolt 10 and nut 12 in the direction of close proximity. As a result, the upper end of the drive arm 22 is fixedly attached to the tilt H via the attachment member K.

  When the cargo compartment is opened from the state shown in FIG. 2, a tilt opening / closing drive device (not shown) is activated to drive the drive arm 22 downward and toward the inside of the track A. As a result, the tilt H rotates about the hinge G and is brought into a state positioned vertically below the frame F as shown in FIG. In the state shown in FIG. 3, the lower end of the tilt H (that is, the upper end in the state shown in FIG. 2) is the lowest position, and is directly on the mounting frame L to which the auxiliary devices (not shown) of the truck A are attached. Will be brought to an upper position.

  In the state shown in FIG. 3, since the tilt H is rotated around the hinge G, the mounting position of the bolt 10 and the nut 12 is reversed left and right as compared with the state shown in FIG. 2. That is, the head portion 14 of the bolt 10 is positioned inside the track A, and the nut 12, that is, the tip end portion of the screw portion 16 of the bolt 14, is positioned outside the track A.

  In the state shown in FIG. 3, if the tilt opening / closing drive device fails and needs to be repaired, the tip of the screw portion 16 of the bolt 14 is located outside the track A, Since this is accessible, a hexagon wrench M is inserted from the outside of the track A into the hexagon hole 20 constituting the second locking portion of the bolt 10 as shown in FIG. By rotating the nut 12 using a wrench or spanner (not shown) while maintaining the state, the bolt 10 and the nut 12 do not rotate together, and the bolt 10 and the nut 12 rotate relative to each other. Is released from the bolt 10 by being unscrewed from the screw portion 16 of the bolt 10.

  As a result, as shown in FIG. 5, the bolt 10 is removed from the tilting H and the mounting member K. Therefore, the mounting member K is released from the mounting state with the tilting H, and the tilting H rotates around the hinge G. It becomes a free state, and upward rotation is permitted. In this way, the space below the frame F is greatly opened, and the tilt opening / closing term drive device attached below the frame F can be repaired.

  Thus, in this embodiment, since the bolt 10 is configured to include the hexagonal holes 18 and 20 that function as the first locking portion and the second locking portion, respectively, at both ends, the bolt 10 Even if there is a situation where it is difficult to lock the head 14 without being able to access the head 14, the second locking portion is provided at the tip of the screw portion 16 opposite to the head 14 of the bolt 10. Since the functioning hexagonal hole 20 is formed, the rotation of the bolt 10 can be easily locked by inserting the hexagon wrench M into the hexagonal hole 20. Thus, it is possible to reliably prevent the rotation and reliably perform the screwing or releasing of both.

  Needless to say, the present invention is not limited to the configuration of the above-described embodiment, and can be variously modified without departing from the gist of the present invention.

  For example, in the above-described embodiment, the hexagonal hole 18 is used as the first locking portion. However, the present invention is not limited to such a configuration, and FIG. 6 shows the second embodiment. As shown, the head 16 may be formed in a substantially hemispherical shape, and a plus-shaped locking groove 18B may be provided on the top of the head 16 to constitute the first locking portion. The plus lock groove 18B can be locked / rotated by engaging the plus lock groove 18B with a plus driver. Needless to say, the first locking portion is not limited to the plus-shaped locking groove 18B, but may be configured by a minus-shaped locking groove.

  In the above-described embodiment, the hexagonal hole 18 is used as the first locking portion. However, the present invention is not limited to such a configuration, and FIG. 7 shows a third embodiment. As shown, it is needless to say that the head 14 may be formed thick and defined by the hexagon head 18C itself. By configuring the first locking portion in this manner with the hexagonal head 18C, the hexagonal head 18C can be locked / rotated with a spanner or a wrench.

  In the above-described embodiment, the second locking portion has been described as being configured by the hexagonal hole 20. However, the present invention is not limited to such a configuration, and FIG. As shown as an example, it goes without saying that a hexagon nut 20 </ b> B formed on the front end surface of the screw portion 16 of the bolt 10 may be provided.

  In the fourth embodiment shown in FIG. 8, the first locking portion is described as being configured from the hexagon head 18C. However, in the configuration using the hexagonal hat 20B as the second locking portion, The engagement portion is not limited to the combination with the hexagon head 18C. Even if the first engagement portion has a plus or minus engagement groove 18B, the hexagon groove 18 is also provided. Needless to say, it may be configured. Further, although not shown, it is needless to say that the second locking portion may include a plus or minus locking groove. In short, the hexagonal hole, plus / minus shaped locking groove, hexagon head as the first locking part and the hexagonal hole, plus / minus locking groove, hexagon head as the second locking part The combination of can be freely performed.

Industrial availability

  As described above, by using the bolt 10 of this embodiment, when the member attached via the bolt and nut is removed in a state of being moved from the attachment posture, the hand cannot be accelerated to the head of the bolt. Even in a situation where it cannot be locked and rotated, a bolt capable of reliably releasing the engagement of the bolt and nut can be provided, and the two members attached to each other can be provided. The removal work can be easily performed, and the effect can be widely used.

A Track F Underframe G Hinge H Tail HA Insertion hole K Mounting member KA Insertion hole L Frame M Hexagon wrench 10 Bolt 12 Nut 14 Head 16 Screw part 16A Screw groove 18 Hexagon socket (first locking part)
18B Plus-shaped locking groove (first locking part)
18C Hex head (first locking part)
20 Hexagon socket (second locking part)
20B Hexagon bolt (second locking part)
22 Drive arm 22A Support shaft

Claims (7)

A head formed with a first locking portion;
A screw portion that is integrally connected to the head in a coaxial manner and has a screw threaded on the outer periphery;
A bolt characterized in that a second locking portion is formed at the tip of the screw portion. The head is formed in a thin disk shape,
The bolt according to claim 1, wherein the first locking portion is defined by a hexagonal hole that opens on a surface of the head. The head is formed in a substantially hemispherical shape,
The bolt according to claim 1, wherein the first locking portion is defined by a plus or minus shaped locking groove formed at a top of the substantially hemispherical head. The head is formed thick,
The bolt according to claim 1, wherein the first locking portion is defined by a hexagon head to which a spanner is fitted.   The bolt according to any one of claims 1 to 4, wherein the second locking portion is defined by a hexagonal hole that opens at a distal end surface of the screw portion.   The said 2nd latching | locking part is prescribed | regulated from the plus or minus-shaped latching groove formed in the front end surface of the said screw part, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. Bolts.   The said 2nd latching | locking part is prescribed | regulated from the hexagonal bolt-shaped protrusion part integrally formed in the end surface of the said screw part, The Claim 1 characterized by the above-mentioned. bolt.

Images