FR3072044A1 - SOCKET EQUIPPED WITH A SYSTEM FOR CONTROLLING A SIDE OF EXCEEDING - Google Patents

Abstract

The subject of the invention is a bushing equipped with a control system (56) with an overshoot dimension making it possible to control this overshoot dimension simultaneously with the clamping. This control system comprises a movable element (60) configured to move outside the body (34) of the sleeve, parallel to the axis of revolution (A22) of the sleeve, between a first position and a second position , the movable member (60) being closer to a reference surface (36) of the bushing in the second position than in the first position, a spring (62) configured to urge the movable member (60) towards the second position and a finger (64) integral with the movable member (60), which passes through the sleeve via a passage (58) so that its free end (64.1) is pushed by the threaded rod (26). ) when screwing.

Description

BUSHING EQUIPPED WITH A SYSTEM FOR CONTROLLING AN OVERFLOW SIDE

The present application relates to a socket fitted with a system for checking an overshoot rating.

According to one operating mode, a socket 10 is used to screw a threaded rod 12 into a nut 14.

Such a socket 10 has an axis of revolution A10 and comprises, at a first end, a first recess 16 configured to accommodate the nut 14 and, at a second end, a second recess 18 configured to connect a tool 20 configured to make pivot the bush 10 on itself, around its axis of revolution A10.

For some assemblies, after tightening, the distance between the end of the threaded rod 12 and the nut 14, called the overshoot dimension, must be checked to verify that it is within a given range of values.

This control operation cannot be carried out during tightening because the end of the threaded rod 12 is positioned inside the sleeve 10 during tightening and is neither visible nor accessible.

Consequently, this control operation requires, after the tightening operation, the passage of an operator responsible for measuring the overshoot dimension. If the measured value for the overshoot dimension does not comply then another operator must intervene to restart the tightening.

Since the tightening and checking operations are separate, they require a certain time.

The present invention aims to remedy the drawbacks of the prior art.

To this end, the subject of the invention is a socket comprising a body having an axis of revolution and an external surface which extends from a first end to a second end, the first end having an approximately perpendicular reference face. to the axis of revolution and a first recess, hollow relative to the reference face, configured to at least partially house a nut, the second end comprising a connection system for connecting the socket to a tool.

According to the invention, the body of the sleeve comprises a passage connecting the first cavity and the external surface and the sleeve comprises a system for controlling an overhang dimension which comprises a mobile element configured to move outside the body. of the sleeve, parallel to the axis of revolution, between a first position and a second position, the movable element being closer to the reference surface in the second position than in the first position, a spring configured to push the element movable to the second position and a finger secured to the movable element passing through the passage and having a free end inside the first imprint.

The sleeve fitted with a control system for overshoot dimensions allows tightening and checking operations to be carried out simultaneously, thereby reducing the duration of these operations.

According to another characteristic, the external surface of the body has a first cylindrical section coaxial with the axis of revolution, the movable element is a sliding ring fitted on the body and the spring is a compression spring mounted around the body and in contact with the sliding ring.

According to another characteristic, the outer surface comprises a collar projecting from the first section of the outer surface which forms a stop materializing the second position.

According to one embodiment, the sliding ring comprises an extension which extends parallel to the axis of revolution, which has a first end secured to the sliding ring and a second end to which the finger is connected.

According to another characteristic, the passage is an oblong lumen which has a larger dimension oriented parallel to the axis of revolution, the passage being spaced from the reference face and the finger extends in a direction perpendicular to the axis of revolution and has a diameter substantially equal to a width of the passage.

According to a first variant, the control system comprises a marking on the body of the socket indicating a position of the finger and / or of the movable element when a desired overshoot rating is reached.

According to a second variant, the control system comprises a measuring device configured to measure a movement of the movable element and / or of the finger.

According to an embodiment of this second variant, the measuring device is an optical sensor, fixed on the body and / or a connection ring of the connection system, emitting a beam oriented parallel to the axis of revolution, in the direction of the movable element.

In addition, the meter can be configured to issue a signal when a desired overshoot rating is reached.

Other characteristics and advantages will emerge from the description of the invention which follows, description given by way of example only, with reference to the appended drawings among which:

FIG. 1 is a section through a tool and a socket which illustrates an embodiment of the prior art,

FIG. 2 is a perspective view of a tool and a socket which illustrates an embodiment of the invention,

FIGS. 3 and 4 are sections of the tool and of the socket visible in FIG. 2 at two different times which illustrate a first use,

Figures 5 and 6 are sections of the sleeve visible in Figure 2 at two different times which illustrate a second use.

In Figures 2 to 4, there is shown a tool 20 and a socket 22 used to screw a nut 24 on a threaded rod 26. The socket 22 has an axis of revolution A22.

For the remainder of the description, the screwing direction DV is parallel to the axis of revolution A22 of the sleeve and corresponds to the direction of the translational movement of the nut 24 relative to the threaded rod 26 (or vice versa) during screwing.

The threaded rod 26 includes an end face F26. The nut 24 may include a flange C24. The term CD protrusion means the distance between the end face F26 and the nut 24.

The tool 20 is configured to rotate the bush 22 on itself, about its axis of revolution A22. This tool 20 comprises a head 28 which has a support face F28 perpendicular to the screwing direction DV and an operating member 30 projecting relative to the support face F28. According to one embodiment, the operating member 30 is centered relative to the support face F28 and has a square section in planes parallel to the support face F28. The head 28 has a threaded cylindrical portion 32 around the support face F28. Tool 20 is not further described since it can be identical to those of the prior art. The socket 22 comprises a body 34 which extends from a first end 34.1 to a second end 34.2. The first end 34.1 has a reference face 36, substantially flat and perpendicular to the direction of screwing DV and a first cavity 38, hollow relative to the reference face 36, configured to at least partially accommodate the nut 24. This first impression 38 has a profile identical to the periphery of the nut 24 so that the latter is immobilized in rotation relative to the sleeve 22 during screwing.

According to a first use visible in FIGS. 3 and 4, the reference face 36 takes support in operation against the flange C24 of the nut 24.

According to a second use visible in FIGS. 5 and 6, when the nut 24 does not include a flange, the reference face 36 bears against a surface of a part 40 against which the nut 24 is in contact.

The socket 22 comprises a connection system 42, at the second end 34.2 of the body 34, for connecting it to the tool 20.

According to one embodiment, the connection system 42 comprises a bearing face 44 at the second end 34.2, substantially planar and perpendicular to the direction of screwing DV, as well as a second cavity 46, hollow relative to the bearing face 44, configured to at least partially house the operating member 30 of the tool 20. This second impression 46 has a profile identical to the periphery of the operating member 30 so that the latter is immobilized in rotation relative to the sleeve 22 during screwing.

In addition, the connection system 42 comprises a connection ring 48 configured to hold the operating member 30 of the tool 20 engaged in the second cavity 46 of the socket 22. According to one embodiment, the connection ring 48 is connected by a pivoting link to the body 34 and comprises an internal threaded duct 50 configured to be screwed onto the threaded cylindrical portion 32 of the tool 20.

According to one embodiment, the body 34 is tubular and comprises an inner conduit 52, coaxial with the axis of revolution A22 of the sleeve 22, which extends between the first and second ends 34.1, 34.2. The inner duct 52 has a first portion opening out at the level of the reference face 36 corresponding to the first cavity 38 and a second portion opening out at the level of the bearing surface 44 corresponding to the second cavity 46.

According to one embodiment, the body 34 comprises an external surface 54 which extends from the first end 34.1 to the second end 34.2 and which has a first cylindrical section 54.1 and coaxial with the axis of revolution A22 of the sleeve 22, a second section 54.2 which extends from the first section 54.1 to the reference face 36 and a flange 54.3 projecting from the first section 54.1 which separates the first and second sections 54.1, 54.2.

According to the invention, the socket 22 comprises a control system 56 for an overshoot rating.

The body 34 comprises a passage 58 connecting the first cavity 38 and the outer surface 54. According to one embodiment, the passage 58 is an oblong lumen which has a larger dimension oriented in the direction of screwing DV. The passage 58 is positioned at the second section 54.2 of the outer surface 54 and it is spaced from the reference face 36.

The control system 56 comprises a movable element 60 configured to move outside the body 34 of the socket 22, parallel to the direction of screwing DV, between a first position visible in FIGS. 4 and 6 and a second position visible in FIGS. 3 and 5, the mobile element 60 being closer to the reference surface 36 in the second position than in the first position, a spring 62 configured to push the mobile element 60 towards the second position as well as a finger 64 secured to the movable element 60 passing through the passage 58 and having a free end 64.1 inside the first cavity 38 so as to be pushed by the threaded rod 26 during tightening.

According to one embodiment, the movable element 60 is a sliding ring 66 fitted on the body 34 of the sleeve 22 and the spring 62 is a compression spring mounted around the body 34 and positioned between the connection ring 48 and the sliding ring 66.

The collar 54.3, projecting relative to the external surface 54 of the body 34 of the sleeve 22, constitutes a stop 68 which materializes the second position, the spring 62 holding the sliding ring 66 against said stop 68.

The finger 64 is a cylindrical rod which is oriented perpendicular to the direction of screwing DV. In the case of a tubular sleeve, the free end 64.1 is positioned inside the interior conduit 52, approximately at the level of the axis A22 of the sleeve.

According to one configuration, the sliding ring 66 comprises an extension 70, in the form of a cylindrical rod, which extends parallel to the screwing direction DV, which has a first end integral with the sliding ring 66 and a second end with which is connected finger 64.

The passage 58 has a width substantially equal to the diameter of the finger 64, so as to guide the latter in the screwing direction DV.

The length and positioning of the passage 58 are determined so as to allow the finger 64 to move in the passage 58 when the sliding ring 66 moves between the first and second positions.

According to a first variant, the control system 56 comprises a marking on the body 34 of the socket 22 which indicates the position of the finger 64 and / or of the movable element 60 when the overshoot rating CD is reached.

According to a second variant, the control system 56 comprises a measuring device 72 configured to measure the displacement of the movable element 60 and / or of the finger 64.

According to one embodiment of this second variant, the measuring device 72 is an optical sensor, fixed to the body 34 or the connection ring, which emits a beam 74 oriented parallel to the screwing direction DV, in the direction of the sliding ring 66. The measuring device 72 can emit a signal when the measured value corresponds to the desired overshoot dimension.

The operation of the socket 22 is explained with reference to FIGS. 3 to 6.

Initially, the sleeve 22 is positioned on the nut 24, its reference face 36 being pressed against the flange C24 of the nut 24 or the part 40 against which the nut 24 bears. Depending on the height of the nut 24, the sliding ring 66 is in abutment against the flange 54.3 of the external surface 54 of the body 34 of the sleeve 22 or the finger 64 is in abutment against the nut 24.

When screwing, the end face F26 of the threaded rod 26 bears against the finger 64 and pushes the sliding ring 66 and finger 64 assembly against the spring 62.

According to the first variant, the tightening operation continues as long as the sliding ring 66 and / or the finger 64 have not reached the marking corresponding to the desired overshoot rating CD.

According to the second variant, the tightening operation continues as long as the measuring device 5 72 does not indicate a value corresponding to the desired CD overshoot rating or does not emit a signal.

According to the invention, the checking of the overshoot dimension is carried out at the time of tightening so that it is no longer necessary to provide for a subsequent control operation, separate from the tightening operation. Thus, the sleeve fitted with the control system makes it possible to reduce the duration of the tightening and control operations.

Claims (9)

1. Socket comprising a body (34) having an axis of revolution (A22) and an outer surface (54) which extends from a first end (34.1) to a second end (34.2), the first end ( 34.1) having a reference face (36) approximately perpendicular to the axis of revolution (A22) and a first recess (38), recessed relative to the reference face (36), configured to at least partially house a nut (24), the second end (34.2) comprising a connection system (42) for connecting the socket to a tool (20), characterized in that the body (34) of the socket comprises a passage (58) connecting the first indentation (38) and the outer surface (54) and in that the socket includes a control system (56) for an overshoot dimension which comprises a movable element (60) configured to move outside the body ( 34) of the sleeve (22), parallel to the axis of revolution (A22), between e a first position and a second position, the movable element (60) being closer to the reference surface (36) in the second position than in the first position, a spring (62) configured to push the movable element ( 60) towards the second position as well as a finger (64) integral with the movable element (60) passing through the passage (58) and having a free end (64.1) inside the first imprint (38). 2. Socket according to claim 1, characterized in that the outer surface (54) has a first section (54.1) cylindrical and coaxial with the axis of revolution (A22), in that the movable element (60) is a sliding ring (66) fitted on the body (34) and in that the spring (62) is a compression spring mounted around the body (34) and in contact with the sliding ring (66). 3. Socket according to claim 2, characterized in that the outer surface (54) comprises a flange (54.3) projecting from the first section (54.1) of the outer surface (54) which forms a stop (68) materializing the second position. 4. Socket according to claim 2 or 3, characterized in that the sliding ring (66) comprises an extension (70) which extends parallel to the axis of revolution (A22), which has a first end integral with the ring sliding (66) and a second end to which the finger (64) is connected. 5. Socket according to one of the preceding claims, characterized in that the passage (58) is an oblong opening which has a larger dimension oriented parallel to the axis of revolution (A22), the passage (58) being spaced from the reference face (36) and in that the finger (64) extends in a direction perpendicular to the axis of revolution (A22) and has a diameter substantially equal to a width of the passage (58). 6. Socket according to one of the preceding claims, characterized in that the system 5 control (56) includes a marking on the body (34) of the sleeve indicating a position of the finger (64) and / or the movable member (60) when a desired overshoot rating (CD) is reached. 7. Socket according to one of the preceding claims, characterized in that the control system (56) comprises a measuring device (72) configured to measure a 10 movement of the movable member (60) and / or the finger (64). 8. Socket according to the preceding claim, characterized in that the measuring device (72) is an optical sensor, fixed on the body (34) and / or a connection ring (48) of the connection system (42), emitting a beam (74) oriented parallel to the axis of revolution (A22), in the direction of the movable element (60). 15 9. Socket according to claim 7 or 8, characterized in that the measuring device (72) is configured to emit a signal when a desired overshoot rating (CD) is reached.