JP2015040602A - Clamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently hold a held member in an easy using method in a clamp nipping and holding the held member.SOLUTION: A clamp 1 comprises: a body member 10 having a location part 11 for locating a rail 100, and an opposite part 13 on which a screw hole 12 is formed at a position opposite to the location part 11; a displacement member 20 that has a rod-like screw part 21 with a screw groove screwed with the screw hole 12, and whose distance from the location part 11 varies together with rotation of the screw part 21; and a lever member 30 for changing torque applied to the screw part 21 against force applied by a user by operation of the user. By such the clamp 1, the user operates the lever member 30, and therefore, the torque when fastening the screw part 21 can be changed, so as to sufficiently hold the rail 100 in an easy using method.

Description

  The present invention relates to a clamp that holds and holds a held member.

  A screw-type clamp is known as the clamp (see, for example, Patent Document 1). In this screw-type clamp, a held member is held by directly pressing a screw portion with a handle against a held member such as a rail mounted on the mounting portion by a user's operation.

Japanese Patent No. 40222840

  However, the clamp is configured so that the user operates the handle to hold the held member. For example, when the position where the held member is placed deviates from a predetermined position, or the user's force is weak. In some cases, depending on the method of use, there is a problem that the member to be held can be held well.

  Therefore, in view of such problems, it is an object of the present invention to enable a clamp member that holds and holds a held member to hold the held member satisfactorily by an easy usage method.

  The clamp of the present invention made to achieve this object has a mounting portion for mounting the held member and a facing portion in which a screw hole is formed at a position facing the mounting portion. For the force applied by the user and the displacement member that has a main body member, a rod-shaped screw portion having a screw groove that engages with the screw hole, and the distance from the mounting portion changes as the screw portion rotates. A torque changing mechanism for changing a torque applied to the screw portion by a user's operation.

  According to such a clamp, since the torque at the time of tightening the screw portion can be changed by the user operating the torque changing mechanism, the held member can be satisfactorily held by an easy usage method.

  In addition, as a specific example of the torque changing mechanism in the present invention, for example, a member operated by a user adopts a mechanism in which the distance from the central axis of the screw portion to the part farthest from the central axis is variable, It is possible to employ a mechanism or the like in which torque is applied or not applied to the screw portion by a user's operation.

  Further, the descriptions in the claims can be arbitrarily combined as much as possible. At this time, a part of the configuration may be excluded within a range where the object of the invention can be achieved.

It is a front view of clamp 1 to which the present invention was applied. 2 is a plan view of the clamp 1. FIG. It is a left view of the clamp.

Embodiments according to the present invention will be described below with reference to the drawings.
[Configuration of this embodiment]
1 to 3 show a clamp 1 to which the present invention is applied. The clamp 1 is configured as a clamp for a rail that holds and holds a rail 100 used as a railroad rail as a member to be held. The clamp 1 is made of a material such as a metal having conductivity. As shown in FIG. 1, the clamp 1 is brought into contact with the rail 100 from the lower side of the rail 100 and is clamped in this state. Is configured to be fixed.

  The clamp 1 is used, for example, for the purpose of ensuring the safety of the maintenance staff by electrically connecting the overhead line and the rail 100 using a cable when performing maintenance inspection of the overhead line on the train line. In addition, a cable is connected to the cable connection part 17 (refer FIG. 3).

The clamp 1 includes a main body member 10, a displacement member 20, a lever member 30, a plate member 40, and a contact member 50, and is generally classified as a screw type C-type clamp.
The main body member 10 includes a C-shaped portion 15 formed in a substantially C shape. The C-shaped portion 15 connects the mounting portion 11 for mounting the rail 100, the facing portion 13 in which the screw hole 12 is formed at a position facing the mounting portion 11, the facing portion 13, and the mounting portion 11. Connecting portion 14 to be connected. Further, the C-shaped portion 15 is constituted by an integral member in which the mounting portion 11 and the connecting portion 14 are connected by the curved surface portion 16.

  Here, in the C-shaped portion 15, it is considered that if the thickness of the placement portion 11 is increased, it is possible to make the placement portion 11 and the connection portion 14 at a right angle. However, since the mounting portion 11 is inserted under the rail 100, workability is better when the thickness is smaller, such as removing the need for gravel. For this reason, the curved surface part 16 is provided in order to reduce the thickness of the mounting part 11 and to ensure strength.

  In the present embodiment, the facing portion 13 and the connecting portion are also connected by a curved surface. Further, the central axis (screw central axis) of the screw hole 12 has a predetermined angle that is not parallel to the vertical direction of the surface (mounting surface) of the mounting portion 11.

  The displacement member 20 includes a screw part 21, an engaged part 22, and a handle part 23. The screw portion 21 is formed in a rod shape, and has a screw groove that engages with the screw hole 12 provided in the main body member 10. The displacement member 20 changes its distance from the mounting portion 11 as the screw portion 21 rotates (see FIG. 1).

  The engaged portion 22 has the same shape as the hexagonal portion of the hexagon bolt, and is disposed on the screw portion 21 on the side opposite to the placement portion 11. The engaged portion 22 rotates integrally with the screw portion 21 when the screw portion 21 rotates along the screw hole 12.

  The handle portion 23 is configured to rotate integrally with the screw portion 21 and the engaged portion 22, and has an outer diameter larger than the outer diameter of the engaged portion 22 on the side opposite to the placement portion 11. Have. With this configuration, the lever member 30 is prevented from falling off the screw portion 21.

  The lever member 30 is configured in a substantially bar shape having an arm longer than the outer diameter of the screw portion 21 or the handle portion 23, and when the user operates with the same force as when operating the handle portion 23, a larger torque is obtained. Can be applied to the screw portion 21. The lever member 30 is in a state where the screw portion 21 is inserted, and the lever member 30 is formed with an engaging portion 31 that engages with the engaged portion 22.

  When the user lifts the lever member 30 toward the engaged portion 22, the engaging portion 31 is engaged with the engaged portion 22, and the lever member 30 is operated in this engaged state. Then, torque is transmitted to the screw portion 21. Further, the lever member 30 is brought into a non-engaged state in which the engaging portion 31 does not engage with the engaged portion 22 due to the action of gravity when the user does not touch (see FIG. 1). The lever member 30 is positioned between the engaged portion 22 and the placement portion 11 in the engaged state.

  At this time, the lever member 30 can freely rotate around the rotation axis of the screw portion 21 (see the arrow in FIG. 2). By doing in this way, even if a worker's foot walking in the vicinity of the rail 100 touches the lever member 30, there is a probability that an operator such as a track maintenance worker will scoop or torque will be applied to the screw portion 21. Lower.

  Next, the plate member 40 is disposed on the surface of the connecting portion 14 on the mounting portion 11 side, and has a thickness approximately equal to the radius of curvature of the curved surface portion 16 (in this embodiment, greater than or equal to the radius of curvature). The reason for this is to prevent the rail 100 from touching the curved surface portion 16 and to make the angle when holding the rail 100 constant.

  Next, the contact member 50 is arranged on the mounting portion 11 side of the screw portion 21. The abutting member 50 is configured to be rotatable independently of the rotation of the screw portion 21 although the distance from the mounting portion 11 is displaced along with the displacement of the screw portion 21. The abutment member 50 abuts on the rail 100 and sandwiches the rail 100 with the mounting portion 11.

  The contact member 50 includes a guide portion 51 for suppressing the rotation of the contact member 50. As shown in FIGS. 2 and 3, the guide portion 51 is disposed so as to sandwich the main body member 10 from both sides. When the contact member 50 tries to rotate, the guide portion 51 hits the main body member 10 and the contact member 50. Is suppressed.

[Effects of this embodiment]
In the clamp 1 described in detail above, the main body member having the mounting portion 11 for mounting the rail 100 and the facing portion 13 in which the screw hole 12 is formed at a position facing the mounting portion 11. 10 and a displacement member 20 having a rod-like screw portion 21 having a screw groove that is engaged with the screw hole 12 and whose distance from the mounting portion 11 changes as the screw portion 21 rotates, and a user adds And a lever member 30 for changing the torque applied to the screw portion 21 with respect to the force by the operation of the user.

  According to such a clamp 1, since the torque at the time of tightening the screw part 21 can be changed by operating the lever member 30 by the user, the rail 100 can be satisfactorily held by an easy usage method.

  In the clamp 1, the displacement member 20 includes an engaged portion 22 that rotates together with the screw portion 21 when the screw portion 21 rotates along the screw hole 12, and can be engaged with the engaged portion 22. Engagement state in which the engagement portion 31 is engaged with the engaged portion 22 by the user's operation, and the engagement portion 31 is not engaged with the engaged portion 22 A bar-shaped lever member 30 that can change between states and can rotate about the rotation axis of the screw portion 21 is provided.

  According to such a clamp 1, since the screw part 21 can be easily tightened if the lever member 30 is brought into the engaged state, the rail 100 can be satisfactorily held by an easy usage method.

  Further, in the clamp 1, the engaged portion 22 is disposed on the screw portion 21 on the side opposite to the placement portion 11, and the lever member 30 is engaged with the engaged portion 22 and the placement portion in the engaged state. 11 is set so as to be located between.

  According to such a clamp 1, the user can release the lever member 30 even if the lever member 30 is in an engaged state by using the mounting portion 11 on the lower side with respect to the engaged portion 22. For example, the lever member 30 can be separated from the engaged portion 22 by gravity and can be engaged. Therefore, even if an operator including the user comes into contact with the lever member 30, the lever member 30 moves freely, so that the operator can be prevented from being injured or the rail 100 being held loose.

  Further, in the clamp 1, the main body member 10 includes a facing portion 13, a mounting portion 11, and a connecting portion 14 that connects the facing portion 13 and the mounting portion 11, and is a C-shaped portion formed in a substantially C shape. 15, the C-shaped portion 15 is connected between the mounting portion 11 and the connecting portion 14 by the curved surface portion 16, and the curvature radius of the curved surface portion 16 is provided on the surface of the connecting portion 14 on the mounting portion 11 side. A plate member 40 having the above thickness is provided.

  According to such a clamp 1, stress concentration at this portion can be reduced by connecting the mounting portion 11 and the connecting portion 14 in the main body member 10 with the curved surface portion 16. Further, when the rail 100 comes into contact with the portion of the curved surface portion 16, inclination tends to occur when the rail 100 is held, but since the rail 100 can be made difficult to contact the curved surface portion 16 by providing the plate member 40, the rail 100 is inclined. Can be suppressed and held well.

  Further, in the clamp 1, the displacement member 20 includes a contact member 50 that can be rotated independently of the rotation of the screw portion 21 and is in contact with the rail 100 on the mounting portion 11 side of the screw portion 21. .

  According to such a clamp 1, the rail 100 can be made difficult to move by the rotational force of the screw portion 21 by holding the contact member 50 independent from the rotation of the screw portion 21 in contact with the rail 100. .

In the clamp 1, the contact member 50 includes a guide portion 51 that suppresses the rotation of the contact member 50.
According to such a clamp 1, it is possible to make the contact member 50 difficult to rotate by the guide portion 51.

  Further, in the clamp 1, the displacement member 20 has a handle portion 23 having an outer diameter larger than the outer diameter of the engaged portion 22 on the side opposite to the main body member 10 (mounting portion 11) when viewed from the lever member 30. I have.

  According to such a clamp 1, the screw portion 21 can be quickly rotated by operating the handle portion 23. Further, since the handle portion 23 has an outer diameter larger than the outer diameter of the engaged portion 22, the lever member 30 can be prevented from falling off the displacement member 20.

In the clamp 1, the central axis of the screw hole 12 has a predetermined angle that is not parallel to the vertical direction of the surface of the mounting portion 11.
According to such a clamp 1, when the rail 100 in which the surface in contact with the mounting portion 11 and the surface in contact with the screw portion 21 (contact member 50) are not parallel is held, the rail 100 is held more firmly. Can do. Therefore, for example, when a rail for railroad tracks is sandwiched, an advantageous configuration can be obtained.

[Other Embodiments]
The present invention is not construed as being limited by the above embodiment. Moreover, the aspect which abbreviate | omitted a part of structure of said embodiment as long as the subject could be solved is also embodiment of this invention. An aspect configured by appropriately combining the above-described plurality of embodiments is also an embodiment of the present invention. Moreover, all the aspects which can be considered in the limit which does not deviate from the essence of the invention specified only by the wording described in the claims are embodiments of the present invention. Further, the reference numerals used in the description of the above embodiments are also used in the claims as appropriate, but they are used for the purpose of facilitating the understanding of the invention according to each claim, and the invention according to each claim. It is not intended to limit the technical scope of

  Furthermore, in the above embodiment, as a torque changing mechanism for changing the torque applied to the screw portion by the user's operation with respect to the force applied by the user, the torque is applied to the screw portion 21 by the user's operation. Although the lever member 30 that is a mechanism that is not added is employed, the present invention is not limited to this configuration. For example, it is possible to employ a mechanism in which a member operated by a user can change a distance from a central axis of the screw portion 21 to a portion farthest from the central axis.

Moreover, in the said embodiment, the guide part 51 may be comprised integrally with the contact member 50, and may be comprised as a different body.
[Correspondence Relationship Between Configuration of Embodiment and Configuration of Present Invention]
The rail 100 in the above embodiment corresponds to a held member in the present invention, and the lever member 30 in the above embodiment corresponds to a torque changing mechanism in the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Clamp, 10 ... Main body member, 11 ... Mounting part, 12 ... Screw hole, 13 ... Opposite part, 14 ... Connection part, 15 ... C-shaped part, 16 ... Curved part, 17 ... Cable connection part, 20 ... Displacement Numeral 21, screw part 22, 22 engaged part, 23 handle part, 30 lever member, 31 engaging part, 40 plate member, 50 contact member, 51 guide part, 100 rail.

Claims (8)

A clamp (1) holding and holding a member to be held (100),
A body member (10) having a placement portion (11) for placing the held member, and a facing portion (13) in which a screw hole (12) is formed at a position facing the placement portion; ,
A displacement member (20) having a rod-like screw portion (21) having a screw groove that is engaged with the screw hole, the distance of the placement portion changing with rotation of the screw portion;
A torque changing mechanism (30) for changing a torque applied to the screw portion by a user's operation with respect to a force applied by the user;
A clamp characterized by comprising: The clamp according to claim 1,
The displacement member includes an engaged portion (22) that rotates together with the screw portion when the screw portion rotates along the screw hole.
As the torque changing mechanism,
An engagement state (31) engageable with the engaged portion, wherein the engaging portion is engaged with the engaged portion by a user operation; and A rod-shaped lever member (30) that is capable of transitioning between a non-engaged state that does not engage with an engaged part and that is rotatable about a rotation axis of the screw part,
A clamp characterized by comprising: The clamp according to claim 2,
The engaged portion is disposed on the opposite side of the mounting portion in the screw portion,
The clamp, wherein the lever member is set so as to be positioned between the engaged portion and the placing portion in an engaged state. In the clamp according to any one of claims 1 to 3,
The main body member includes the facing portion, the mounting portion described above, and a connection portion (14) that connects the facing portion and the mounting portion, and includes a C-shaped portion (15) formed in a substantially C shape. Prepared,
The C-shaped part has a curved surface (16) connected between the mounting part and the connection part,
The clamp characterized by including the plate member (40) which has thickness more than the curvature radius of the said curved surface in the surface by the side of the said mounting part of the said connection part. In the clamp according to any one of claims 1 to 4,
The displacement member is provided with a contact member (50) on the mounting portion side of the screw portion, which can rotate independently of the rotation of the screw portion, and comes into contact with the held member. To clamp. The clamp according to claim 5,
The said contact member was equipped with the guide part (51) which suppresses rotation of the said contact member, The clamp characterized by the above-mentioned. In the clamp according to any one of claims 1 to 6,
The said displacement member was provided with the handle | steering-wheel part (23) which has an outer diameter larger than the outer diameter of the said to-be-engaged part on the opposite side to the said mounting part. The clamp characterized by these. In the clamp according to any one of claims 1 to 7,
The center axis of the screw hole has a predetermined angle that is not parallel to the vertical direction of the surface of the mounting portion.

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