JP5227006B2 - Tubular gripping tool - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a tubular body gripping tool used for construction of a pipe connection place in piping work such as gas equipment and hot water supply equipment, and more specifically, a tubular body so as to keep a pair of tubular bodies to be connected in a connected posture. Holding means for holding each connection side end is provided, and the holding means is a receiving member, a pressing member swingable in a perspective direction with respect to the receiving member, and the pressing member. And an operating means that swings the member toward the near side in the perspective direction, and the connection side end of the tubular body is sandwiched between the receiving member and the pressing member by the operating force of the operating means. The present invention relates to a tubular body gripping tool configured to grip.

  This type of tubular body gripping tool grips the connection side end of each tubular body with the gripping means so as to keep each of the pair of tubular bodies to be connected in a connected posture, for example, a tubular body such as a pipe joint. The connection operation between the two devices can be easily performed with both hands.

  Conventionally, the gripping means includes a receiving member, a pressing member that is swingable in the perspective direction with respect to the receiving member, and a striation as an operating means that swings the pressing member in the near side in the perspective direction with respect to the receiving member. Is known (see Patent Document 1 below).

JP-A-8-300267

  However, in the conventional techniques as described above, as the outer diameter of the tubular body to be grasped increases, the relative angle between the receiving member and the pressing member increases, and the pressing position of the pressing member retracts toward the swing fulcrum side. Since the gripping posture (specifically, the relative angle between the presser member and the receiving member and the relative position between the receiving position of the receiving member and the presser position of the pressing member) changes greatly, in short, the gripping state becomes shallower. For this reason, it is difficult to secure the posture holding force for the tubular body having a large outer diameter, which causes a problem that the applicability to the outer diameter of the tubular body is low.

  The present invention has been made in view of the above circumstances, and its main problem is to prevent the gripping posture from being changed due to a change in the outer diameter of the tubular body, and to be applied to the outer diameter of the tubular body. It is in the point which provides the tubular body holding tool excellent in property.

With the gripping means is provided for gripping the tubular body each connecting end portions so as to maintain the pair of tubular bodies each connecting position of the connection object,
The gripping means includes: a receiving member; a pressing member that can swing in a perspective direction with respect to the receiving member; and an operating means that swings the pressing member in a perspective direction with respect to the receiving member. Configured,
A tubular body gripping tool configured to grip the connection-side end portion of the tubular body between the receiving member and the pressing member by an operating force of the operation means,
Swing radius of the pressing member is configured to be changed in a form that repositioning its fulcrum.

According to the above configuration , the rocking radius of the presser member can be changed by changing the position of the rocking fulcrum of the presser member. Therefore , the rocking fulcrum of the presser member can be changed according to the outer diameter of the tubular body. The rocking radius of the presser member can be changed by changing the position.

  That is, when the outer diameter of the tubular body is large, the swinging radius of the presser member is increased by retreating the swinging fulcrum of the presser member, and when the outer diameter of the tubular body is small, the presser member By reducing the rocking radius of the holding member in a form in which the rocking fulcrum is advanced, the holding posture of the holding member and the receiving member (when the outer diameter of the tubular body is large and when the outer diameter of the tubular body is small) ( Specifically, it is possible to prevent changes in the relative angle between the holding member and the receiving member and the relative position between the receiving position of the receiving member and the holding position of the holding member, thereby reducing the outer diameter of the tubular body. Use applicability can be improved effectively.

On the base end side of the presser member, an engagement piece portion having a plurality of engaging portions whose positions are different in the rocking radius direction of the presser member is formed, and the receiving member is formed in the rocking radius direction of the presser member. An engaged hole portion having a plurality of locked portions having different positions is formed,
For each combination of one locking portion of the plurality of locking portions and one corresponding locked portion corresponding to the locking portion, it is configured to be able to be locked in a state of configuring a swing fulcrum,
The pressing member is configured to be selectively attachable to the receiving member at a plurality of positions in the rocking radial direction by locking in the combinations.
Each combination is obtained by relative movement of the engagement piece portion and the engaged hole portion in a state where the engagement state between the engagement piece portion of the pressing member and the engaged hole portion of the receiving member is maintained. changes to the locking position is configured to be due.

According to the above configuration , the pressing member is locked by each combination (a combination of one locking portion of the plurality of locking portions and one locked portion corresponding thereto). In contrast to being configured to be selectively attachable to the receiving member at a plurality of positions in the oscillating radial direction, the engagement of the engaging piece portion of the holding member and the engaged hole portion of the receiving member Since the engagement piece portion and the engaged hole portion with the state maintained can be changed to each locking position by each combination, the locking position changing operation can be performed. It is possible to prevent the presser member and the receiving member from separating during the pressing member changing operation (that is, to change the rocking radius of the presser member). In this respect, the handling at the construction site is effectively improved. be able to.
And the 1st characteristic structure by this invention is equipped with the holding means which hold | grips the connection side edge part of each tubular body so that each of a pair of tubular body of connection object may be kept in a connection attitude | position,
The gripping means is composed of a receiving member, a pressing member that is swingable in a perspective direction with respect to the receiving member, and an operating means that swings the pressing member toward the proximity side with respect to the receiving member.
A tubular body gripping tool configured to grip the connection-side end portion of the tubular body between the receiving member and the pressing member by an operating force of the operation means,
Locking portions are formed at a plurality of positions in the rocking radial direction of the pressing member, and locked portions are formed at a plurality of positions of the holding member in the rocking radial direction of the receiving member,
For each combination of one locking portion of the plurality of locking portions and one corresponding locked portion corresponding to the locking portion, it is configured to be able to be locked in a state of configuring a swing fulcrum,
The presser member is configured such that it can be selectively attached to the receiving member at a plurality of positions in the oscillating radial direction by the locking in each combination.
According to a second characteristic configuration of the present invention, an engagement piece portion having a plurality of the locking portions is formed on the proximal end side of the pressing member,
The receiving member is formed with an engaged hole portion having a plurality of the locked portions,
Each combination is obtained by relative movement of the engagement piece portion and the engaged hole portion in a state where the engagement state between the engagement piece portion of the pressing member and the engaged hole portion of the receiving member is maintained. It is in the point which can be changed to each locking position.

[First Embodiment]
FIG. 1 shows a tubular body gripping tool 1 made of a sheet metal used when connecting tubular bodies K, K such as a pair of gas pipes to be connected by a pipe joint T, etc. Further, gripping means 2 for gripping the connection side end portions of the tubular bodies K, K is provided so as to keep the tubular bodies K, K in the connection posture.

  The gripping means 2 includes a U-shaped receiving member 3 in a plan view, a pair of pressing members 4 swingable in a perspective direction with respect to the receiving member 3, and the pressing member 4 on the side closer to the receiving member 3. And a pair of operating means 5 for swinging.

  And it is comprised so that the connection side edge part of each tubular body K may be clamped between the receiving member 3 and each pressing member 4 with the operating force of the operation means 5, and FIG. 6, FIG. As shown, the rocking radius R of each presser member 4 is configured to be changeable in such a manner that the position of its rocking fulcrum F is changed.

  As shown in FIGS. 1 to 3, the receiving member 3 includes a pair of receiving piece portions 6 that are in a posture orthogonal to the axial direction of the tubular body K in use, and base end portions of the receiving piece portions 6. It is comprised from the connection piece part 7 which connects. An operation space for connecting the tubular bodies K, K (in this example, tightening operations of the tightening nuts t1, t1 in the pipe joint T) is formed between the opposing surfaces of the receiving piece portions 6. The

  An engaged hole 6 </ b> A for engaging and holding the presser member 4 is formed in the longitudinal intermediate portion of each receiving piece 6. The engaged hole portion 6 </ b> A is composed of a long hole having a substantially rectangular shape in plan view extending in the longitudinal direction of the receiving piece portion 6.

In the engaged hole portion 6A, a plurality of (two in this example) to-be-engaged portions whose positions differ in the rocking radius direction of the presser member 4 (in this example, the longitudinal direction of the presser member 4), In the locking position for the large-diameter pipe (in other words, the posture for the large-diameter pipe (see FIG. 6)) in which the rocking radius R of the presser member 4 is increased, the presser is supported in a state where the rocking fulcrum F of the presser member 4 is configured. The large-diameter tube locked portion 6a for locking the member 4 and the small-diameter tube locking position in which the swing radius R of the pressing member 4 is shorter than the small-diameter tube locking position (in other words, the small-diameter tube). In the tube posture (see FIG. 7), a small-diameter tube locked portion 6b is formed for locking the presser member 4 in a state where the rocking fulcrum F of the presser member 4 is formed.

  The large-diameter tube locked portion 6a is formed on the longitudinal base end side of the engaged hole portion 6A (that is, the connecting piece 7 side), while the small-diameter tube locked portion 6b. Is formed on the front end side in the longitudinal direction of the engaged hole portion 6A (that is, the tubular body K side).

  And between the said large diameter pipe locked part 6a and the small diameter pipe locked part 6b, the engaging piece part 9 of the pressing member 4 mentioned later is inserted / removed with respect to the said engaged hole part 6A. For this purpose, a wide insertion / removal portion 6d is formed.

  In addition, 6e is a reinforcement beat insertion part in which the reinforcement beat 10 (refer FIG. 5) formed in the pressing member 4 enters in the locking position for small diameter pipes. Reference numeral 6f denotes a plurality of (four in this example) protrusions for preventing the locking positions of the pressing member 4 from being changed unexpectedly.

  As shown in FIGS. 6 and 7, the operating means 5 includes a pair of receiving bolts 5 a attached to the front end side of each receiving member 3, and the presser member 4 in the form of being screwed to the receiving member 3 in proximity to the receiving member. It comprises a pair of wing nuts 5b that are pressed and moved to the side, and a cap nut 5c that is screwed to the tip of the receiving bolt 5a for preventing the wing nut 5b from being detached from the receiving bolt 5a.

  As shown in FIGS. 4 and 5, the presser member 4 has a presser-shaped presser portion 4 a that is substantially in a side view for pressing the tubular body K on the distal end side (that is, the tubular body K side). The base portion 4A and a narrow engagement piece portion 9 formed to project from the base end side of the base portion 4A toward the receiving member 3 at an angle of about 45 degrees are formed.

  The receiving bolt 5a can be inserted in the intermediate portion in the longitudinal direction of the base portion 4A, and the large diameter pipe locking position and the small diameter pipe locking position of the presser member 4 in a state where the receiving bolt 5a is inserted. A long hole-like insertion hole 4b for facilitating the change is formed through.

The engagement piece 9 has a plurality of (two in this example) locking portions whose positions differ in the oscillating radius direction of the presser member 4 (in this example, the longitudinal direction of the presser member 4). A large-diameter tube locking portion 9A for locking to the tube locked portion 6a and a small-diameter tube locking portion 9B for locking to the small-diameter tube locked portion 6b are formed.

  Specifically, as shown in FIG. 4 (see FIG. 3), the engagement piece portion 9 has a distal end side of the engaging piece portion 9 (that is, the receiving member 3 side). The tip of the width dimension W4 that is slightly narrower than the width dimension W1 and wider than the width dimension W2 of the large-diameter tube locking portion 6a of the engaged hole 6A and the width dimension W3 of the small-diameter tube locking portion 6b. A wide portion 9a is formed, and an intermediate wide portion 9b having the same width dimension W4 as the tip wide portion 9a is formed in the intermediate portion of the engagement piece portion 9.

  Further, between the distal wide portion 9a and the intermediate wide portion 9b, the large-diameter tube having a width W5 slightly narrower than the width W2 of the large-diameter tube locked portion 6a of the engaged hole 6A is inserted. A portion 9c is formed, and the width between the intermediate wide portion 9b and the end of the base portion 4A is slightly narrower than the width dimension W3 of the small-diameter tube locked portion 6b of the engaged hole 6A. A small-diameter pipe insertion portion 9d having a dimension W6 is formed.

  That is, the distal end wide portion 9a, the large diameter tube insertion portion 9c, and the intermediate wide portion 9b constitute the large diameter tube locking portion 9A, and the intermediate wide portion 9b, the small diameter tube insertion portion 9d, and the end of the base portion 4A. The small diameter pipe locking portion 9B is configured with the portion 4c.

  That is, as shown in FIG. 8, the tubular body gripping tool 1 inserts and removes the engaging piece 9 of the pressing member 4 through the inserting / removing portion 6d with respect to the engaged hole 6A of the receiving member 3. Thus, the presser member 4 can be engaged with and disengaged from the receiving member 3.

  Moreover, as shown in FIG. 9, from the state in which the engagement piece 9 of the pressing member 4 is inserted into the insertion / removal portion 6d of the engaged hole 6A of the receiving member 3, the insertion portion 9c for the large diameter pipe is changed. By inserting into the large-diameter tube locked portion 6a of the receiving member 3, the distal end wide portion 9a and the intermediate wide portion 9b at the peripheral position of the large-diameter tube locked portion 6a at the large-diameter tube locking position. The large-diameter tube locking portion 9A is configured to be able to be locked in a state in which it forms a swing fulcrum F of the presser member 4 with respect to the large-diameter tube locked portion 6a.

  Further, as shown in FIG. 10, the small diameter pipe insertion portion 9d is received from a state in which the engagement piece portion 9 of the pressing member 4 is inserted into the insertion / removal portion 6d of the engaged hole portion 6A of the reception member 3. By inserting the small diameter tube locked portion 6b of the member 3 at the small diameter tube locking position, the peripheral edge of the large diameter tube locked portion 6a is formed by the intermediate wide portion 9b and the end 4c of the base portion 4A. The small-diameter tube locking portion 9B is configured to be able to be locked in a state in which the small-diameter tube locking portion 9B forms a swing fulcrum F of the pressing member 4 with the small-diameter tube locking portion 9b surrounded by the front and back sides.

  Further, the engaging piece portion 9 of the holding member 4 is inserted into the engagement hole portion 6A of the receiving member 3 through the insertion / removal portion 6d, and the engagement portion 9 for the small-diameter tube is engaged with the engagement portion 6a for the small-diameter tube. The engagement position for the large-diameter pipe and the small-diameter pipe for the small-diameter pipe are maintained while the engagement state between the engagement piece 9 of the presser member 4 and the engaged hole 6A of the receiving member 3 is maintained. It is configured so that it can be changed relative to the locking position.

  In other words, the tubular body gripping tool 1 is provided with a swing fulcrum F of the pressing member 4 for each combination of one locking portion of the plurality of locking portions and one corresponding locked portion. The presser member 4 is configured so as to be able to be locked in a state in which it is configured, and the presser member 4 is locked at each combination at a plurality of positions (two positions in this example) in the oscillating radial direction with respect to the receiving member 3. It is configured to be selectively attachable. And by the relative movement of the engagement piece 9 and the engaged hole 6A in the state where the engagement state of the engagement piece 9 of the pressing member 4 and the engaged hole 6A of the receiving member 3 is maintained. The respective combinations can be changed to the respective locking positions.

  When the tubular body K has a large outer diameter, the tubular body gripping tool 1 is in a state where the locking position of the presser member 4 and the receiving member 3 is set to the locking position for the large diameter pipe (see FIG. 6). When the outer diameter of the tubular body K is small, the tubular body K can be used in a state where the holding position of the presser member 4 and the receiving member 3 is in the small-diameter tube posture (see FIG. 7). Depending on whether the outer diameter of the body K is large or small, the holding posture of the pressing member 4 and the receiving member 3, more specifically, the relative angle between the pressing member 4 and the receiving member 3, and the receiving position of the receiving member 3 ( In this example, it is possible to prevent the relative position between the receiving piece portion 6) and the holding position of the holding member 4 (in this example, the holding piece portion 4a) from changing.

[Second Embodiment]
FIGS. 11 to 13 show another embodiment of a tubular body gripping tool 1 made of sheet metal used when the tubular bodies K and K are connected by a pipe joint T. In this embodiment, each of the receiving members 3 is shown. An anti-slip coating member 11A made of a soft material (for example, polyvinyl chloride (PVC) or the like) is provided at the tip of the receiving piece 6 and the pressing pieces of the pressing members 4 facing each other. The part 4a is also provided with a non-slip covering member 11B made of a soft material.

  Therefore, the covering members 11A and 11B from which the tubular bodies K and K are detached in the gripping state of the tubular bodies K and K by the distal end portions of the receiving piece portions 6 of the receiving member 3 and the pressing piece portions 4a of the pressing members 4. It effectively suppresses by the frictional force.

  Further, the connecting piece portion 7 of the receiving member 3 is provided with a covering member 12 for gripping the operator, which is also made of a soft material.

  In addition, each covering member 11A, 11B, 12 is shape | molded in the adhesion state with respect to each part 6 and 4a by the dipping process which immerses each part 6 and 4a of each member 3 and 4 in a polyvinyl chloride resin tank.

  Of the plurality of (four in this example) projections 6f for restraining the change of the locking position formed on each receiving piece portion 6 of the receiving member 3, the projection 6g on the distal end side of the receiving piece portion 6 is Both the length in the longitudinal direction of the member and the protruding length are configured to be larger than the protrusion 6h on the rear end side.

  Therefore, in a state where the locking position of the presser member 4 and the receiving member 3 is set to the locking position for the small diameter pipe (see FIGS. 16 to 18), the locking position is changed unexpectedly due to a change in the pipe diameter. Is effectively suppressed by restricting the movement of the presser member 4 in the contact state by the rear end side projection 6h.

  In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

  When the tubular body K has a large outer diameter, the tubular body gripping tool 1 is in a state where the locking position of the presser member 4 and the receiving member 3 is set to the locking position for the large-diameter pipe (FIG. 14, FIG. 15), and when the outer diameter of the tubular body K is small, the holding position of the presser member 4 and the receiving member 3 is in the state for the small-diameter pipe (see FIGS. 16 to 18). By using, the gripping posture of the pressing member 4 and the receiving member 3 depending on whether the outer diameter of the tubular body K is large or small, more specifically, the relative angle between the pressing member 4 and the receiving member 3, and the receiving It is possible to prevent the relative position between the receiving position of the member 3 (in this example, the distal end portion of the receiving piece portion 6) and the holding position of the holding member 4 (in this example, the holding piece portion 4a) from changing.

[Other Embodiments]
(1) In each of the above-described embodiments, the case where the plurality of locked portions 6a and 6b of the receiving member 3 are formed so as to communicate with each other is shown as an example. However, as shown in FIG. The plurality of locked portions 6 a and 6 b of the member 3 may be formed in a state where they are separated from each other in the rocking radial direction of the presser member 4 without communicating with each other. In this case, what is necessary is just to form the said insertion / removal part 6d in each to-be-latched part 6a, 6b.

(2) In each of the above-described embodiments, the two locking portions having different positions in the rocking radius direction of the presser member 4 are formed on the presser member 4, and the positions differ depending on the rocking radius of the presser member 4. Although the case where two locked portions are formed on the receiving member 3 is shown as an example, three or more locking portions having different positions in the swing radius direction are formed on the presser member 4, The receiving member 3 may be formed with three or more locked portions having different positions depending on the swing radius.

(3) In each of the above-described embodiments, the case where the pair of pressing members 4 for each tubular body is provided is shown as an example, but the common (one) having two pressing piece portions 4a for the pair of tubular bodies. The pressing member may be provided.

(4) In each of the above-described embodiments, the case where the operating means 5 is configured by the receiving bolt 5a and the wing nut 5b has been described as an example. However, for example, the operating means 5 is configured by an elastic body such as a spring or rubber. Also good.

(5) The specific configuration for locking the presser member 4 and the receiving member 3 is not limited to the configurations shown in the above-described embodiments, and various configuration changes are possible.

(6) In the above-described second embodiment, the case where the covering member is made of polyvinyl chloride has been described as an example. However, the covering member can be made of various materials depending on the purpose of attaching the covering member.

(7) In the second embodiment described above, the covering member is provided on the tip of each receiving piece 6 of the receiving member 3, the holding piece 4a of the pressing member 4, and the connecting piece 7 of the receiving member 3. As an example, the covering member can be provided at an appropriate position according to the target unit price of the product and the desire of the installer, and the receiving member 3 and the holding member 4 are all covered with the covering member. May be.

(8) In the above-described embodiment, the case where each covering member is molded in an adhesive state with respect to each part by dipping processing in which each part to be attached is immersed in a polyvinyl chloride resin tank is shown as an example. After forming separately from each part used as attachment object, the structure attached to each part may be sufficient.

The top view which shows the use condition of the tubular body holding | gripping tool in 1st Embodiment. Perspective view of receiving member Top view of the receiving member Top view of the presser member Side view of the presser member Side view of the main part showing the state of locking at the locking position for large diameter pipes (posture for large diameter pipes) Side view of the main part showing the state (posture for small diameter pipe) locked at the small diameter pipe locking position Illustration of how to use Illustration of how to use Illustration of how to use The top view of the receiving member in 2nd Embodiment Top view of the presser member Side view of the presser member Side view of the main part showing the state of locking at the locking position for large diameter pipes (posture for large diameter pipes) Side view of the main part showing the state of locking at the locking position for large diameter pipes (posture for large diameter pipes) Side view of the main part showing the state (posture for small diameter pipe) locked at the small diameter pipe locking position Side view of the main part showing the state (posture for small diameter pipe) locked at the small diameter pipe locking position Side view of the main part showing the state (posture for small diameter pipe) locked at the small diameter pipe locking position The top view of the receiving member in other embodiments

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tubular body gripping tool 2 Holding means 3 Receiving member 4 Holding member 5 Operation means 6a, 6b Engagement part 6A Engagement hole part 9 Engagement piece part 9A, 9B Engagement part R Oscillation radius F Oscillation fulcrum K Tubular body

Claims (2)

A gripping means for gripping each connection side end of each tubular body so as to keep each of the pair of tubular bodies to be connected in a connection posture is provided.
The gripping means is composed of a receiving member, a pressing member that is swingable in a perspective direction with respect to the receiving member, and an operating means that swings the pressing member toward the proximity side with respect to the receiving member.
A tubular body gripping tool configured to grip the connection-side end portion of the tubular body between the receiving member and the pressing member by an operating force of the operation means,
Locking portions are formed at a plurality of positions in the rocking radial direction of the pressing member, and locked portions are formed at a plurality of positions of the holding member in the rocking radial direction of the receiving member,
For each combination of one locking portion of the plurality of locking portions and one corresponding locked portion corresponding to the locking portion, it is configured to be able to be locked in a state of configuring a swing fulcrum,
A tubular body gripping tool configured such that the presser member can be selectively attached to the receiving member at a plurality of positions in the oscillating radial direction by locking in the combinations . An engagement piece portion having a plurality of the locking portions is formed on the proximal end side of the pressing member,
The receiving member is formed with an engaged hole portion having a plurality of the locked portions ,
Each combination is obtained by relative movement of the engagement piece portion and the engaged hole portion in a state where the engagement state between the engagement piece portion of the pressing member and the engaged hole portion of the receiving member is maintained. The tubular body gripping tool according to claim 1, wherein the tubular body gripping tool is configured to be changeable to each locking position.

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