FR2570975A1 - Manual tightening tool - Google Patents

Manual tightening tool Download PDF

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Publication number
FR2570975A1
FR2570975A1 FR8415139A FR8415139A FR2570975A1 FR 2570975 A1 FR2570975 A1 FR 2570975A1 FR 8415139 A FR8415139 A FR 8415139A FR 8415139 A FR8415139 A FR 8415139A FR 2570975 A1 FR2570975 A1 FR 2570975A1
Authority
FR
France
Prior art keywords
rod
handle
characterized
tool according
joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR8415139A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HARTMANN SYLVAIN
Original Assignee
HARTMANN SYLVAIN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HARTMANN SYLVAIN filed Critical HARTMANN SYLVAIN
Priority to FR8415139A priority Critical patent/FR2570975A1/en
Priority claimed from FR8503920A external-priority patent/FR2578772A2/en
Publication of FR2570975A1 publication Critical patent/FR2570975A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25GHANDLES FOR HAND IMPLEMENTS
    • B25G1/00Handle constructions
    • B25G1/06Handle constructions reversible or adjustable for position
    • B25G1/063Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners
    • B25G1/066Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners the grip itself being angularly adjustable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25GHANDLES FOR HAND IMPLEMENTS
    • B25G1/00Handle constructions
    • B25G1/06Handle constructions reversible or adjustable for position
    • B25G1/063Handle constructions reversible or adjustable for position for screwdrivers, wrenches or spanners

Abstract

<P> THE INVENTION HAS THE OBJECT OF A MANUAL TIGHTENING TOOL, FOR EXAMPLE A SCREWDRIVER WHICH ALLOWS TO EXERCISE A RELATIVELY MOMENT OF TORSION WHILE BEING VERY SIMPLE TO USE. </P> <P> HANDLE2 OF THE TOOL IS ARTICULATED ON THE ROD 1 SO THAT IT CAN TAKE TWO PERPENDICULAR POSITIONS TO EACH OTHER. IN THE FIRST POSITION, THE HANDLE2 IS ALIGNED WITH THE ROD; IN SECOND 2A, IT IS PERPENDICULAR TO THE ROD AND IT PROVIDES THE USER WITH A BETTER GRIP. THE ARTICULATION IS LOCKED IN BOTH POSITIONS BY THE ENGAGEMENT OF THE REAR END OF THE ROD1 IN RESPECTIVE HOUSINGS7, 8. IN THE ARTICULATION AREA, THE ROD IS OF SQUARE OR RECTANGULAR SECTION AND ITS SIDE FACES ENGAGE WITH THE HANDLES OF THE HANDLE RECESSING5 TO TRANSMIT THE TORSION EFFORT. </P> <P> THE INVENTION MAY APPLY IN PARTICULAR TO A SCREWDRIVER OR A SOCKET WRENCH. </P>

Description

MANUAL SERRA TOOL
The present invention relates to a manual clamping tool comprising a straight rod and an elongated handle.

Due to the relatively thin shape of their handle, ordinary tightening tools such as screwdrivers or the like do not allow very high torsional moments to be exerted with the hand, in particular for unlocking a seized screw. It is then necessary to use special tools that a handyman generally does not have at his disposal.

To overcome this drawback, there are known screwdrivers with removable shanks, the handle of which is provided with two sockets for holding the shank, one at the end of the handle for mounting the shank in the conventional position as an extension of the handle, and the other embedded in the central part of the handle, to mount the rod in a position perpendicular to the handle. Thus, the user can exert a higher torsional moment, since the friction between the hand and the handle no longer plays a role in the transmission of the torsional force.

However, such a disposiçi.f is inconvenient to use by the fact that the handle must be separated from the rod to change position and that this operation requires to operate two fixing devices to release the rod and then fix it to its new location. In addition, the user risks losing one of the elements of the tool.

Consequently, the present invention aims to improve the
device mentioned above so as to provide a tool having the same advantages, but the elements of which always remain integral and in which the changes in position of the handle are particularly simple and rapid.

For this purpose, the manual tightening tool according to the present invention is characterized in that the handle is connected to the rod by a joint with a transverse axis, arranged to allow the handle to pivot by an angle of 90 degrees relative to to the rod between a first position, in which it is aligned with the rod, and a second position, in which it is perpendicular to the rod.

Preferably, the tool comprises means for locking the handle with respect to the rod in the first and second positions.

According to an advantageous embodiment, the tabby is provided with a longitudinal groove in the area of the joint, while the handle is provided with a transverse pin which engages in this groove and which cor'acid with the axis of the articulation, the locking means comprising two housings formed in the handle in the extension of the rod towards the rear, in its two positions, to allow the rod to slide longitudinally and to be able to engage in one of its two dwellings.,
Preferably, the handle and the rod each have a pair of respective flat surf aces, pependicular to the axis of the joint, the respective surfaces being in abutment against one another to transmit a torsional moment in the rod For example, the rod may have a rectangular or square cross section in the area of the joint.

In the preferred embodiment, the joint is placed substantially in the middle of the length of the handle. However, to obtain a shorter tool, the joint can be placed near one end of the handle.

Depending on the use for which the tool is intended, the end of the rod, on the side opposite the handle, may be in the form of a screwdriver blade, in the form of a socket wrench or in the form of a polygonal connector standardized for a assortment of socket wrenches.

The present invention and its advantages will be better understood with the aid of the description, given below by way of example, of a preferred embodiment and of various variants, with reference to the appended drawings, in which:
FIG. 1 is a view in longitudinal section illustrating a preferred embodiment of the invention,
Figure 2 is a cross-sectional view along line II-II of FIG. 1,
FIG. 3 is a view in longitudinal section of another embodiment,
Figure 4 is a cross-sectional view along line IV-IV of FIG. 3, and
Figure 5 is a longitudinal sectional view of another embodiment.

Figures 1 and 2 illustrate a preferred embodiment of a screwdriver according to the present invention, comprising a straight rod 1 which is connected to an elongated handle 2 by means of a joint whose axis 3 is perpendicular to both the rod 1 and the handle 2. This articulation is located substantially in the middle of the length of the handle. Over most of its length, the rod 1 has a square section; at its free end it is shaped in a conventional manner in the form of a screwdriver blade
At its other end, it is engaged in a longitudinal recess 5 of the handle 2. This recess 5 extends to the peripheral surface of the handle 2 and it has a constant width which is substantially equal to the thickness of the rod 1, which can slide with gentle friction in this recess. In the region of the joint, on one of its faces perpendicular to the axis 3, the rod 1 is provided with a longitudinal groove 6 into which is introduced the end of a screw 7, which is fixed in one of the
& BR <handle sides 2 and serves as a pin for the joint. Thus, the rod 1 can slide longitudinally relative to the handle 2, this stroke being limited by the screw 7 when it abuts against the ends of the groove 6. In addition, the axis of the screw 7 constitutes the axis 3 of the joint.

To have means for locking the position of the rod 1, the handle 2 comprises two housings 7 and 8 whose shape corresponds to the section of the rod and which are arranged in the same plane as the recess 5. The first recess 7 is oriented axially in the handle 2, while the second recess 8 is oriented transversely, perpendicular to the first.

The operation of the tool is clearly shown in FIG. 1, in which the handle 2 is shown in its first position, in which it is aligned with the rod. In this position, the rod 1 is pressed into the handle 2 until it engages in the longitudinal housing 7, by which the pin is held in this position relative to the rod. Fig. 1 also shows, in dashed lines, a second position 2a of the handle 2, which is then perpendicular to the rod 1. The handle is locked in this position by the engagement of the end of the rod 1 in the transverse housing 8.

To go from the first to the second position of the handle, the user pulls back the handle 2 relative to the rod 1, which makes the screw 7 slide in the groove 6 and brings out the rear end of the rod 1 housing 7. The handle can then rotate 90 degrees around the axis 3 of the joint, to take a position perpendicular to the rod 1. Then simply press on the handle 2 to slide it on the rod 1 , so that the rear end of the rod engages in the transverse housing 8 to lock the position of the handle. We proceed in a similar manner to return to the first position.

Due to the square section of the rod 1 near the articulation and the corresponding width of the recess 5 of the handle, the rod and the handle each comprise a pair of respective flat surfaces which bear one against the other and which therefore allow the transmission of the torsional force, exerted by the user on the handle, from the handle 2 to the rod 1. Thanks to this arrangement, the torsional force is not transmitted by the screw 7 and the groove 6, which advantageously makes it possible to give these elements limited dimensions.

It appears from the above description that the object of the present invention is particularly simple to carry out and that it comprises only two main parts, assembled by means of a screw. Rod 1 can be made like the rods of traditional screwdrivers. The handle 2 is preferably made of metal, in order to have sufficient hardness in the area of the joint. It can however be coated with rubber, P V C or another synthetic material to increase the comfort of use.

On the other hand, it should be noted that changing the position of the handle is particularly simple and rapid, since the user can even execute it with one hand.

Figures 3 and 4 illustrate a tool according to the invention, having various variants compared to the screwdriver shown in Figs.

1 and 2. This tool also comprises a rod 11 articulated on a handle 12, but in this case, the end of the rod 11 is in the form of a standardized polygonal connector 14 for mounting a socket wrench 14a, chosen for example in an assortment. Of course, in another embodiment, the rod 11 could also be shaped in the form of a screwdriver blade 4, as in the case of FIG.

1.

The articulation of the handle 12 on the rod 11 is made slightly different from that of the previous example, but it works in the same way. As before, the rod it has a substantially rectangular section and it is introduced into a longitudinal recess 15 whose lateral faces are parallel and spaced by a distance corresponding to the thickness of the rod 11.

In the area of the joint, the rod 11 has a longitudinal groove 16 which extends through the entire thickness of the rod and in which is engaged a pin 17 whose axis coincides with the axis 3 of the joint. The pin 17 is forcibly adjusted in a transverse bore of the handle 12.

In addition, in the zone in the zone of the articulation, the rod 11 is widened by lateral tabs 18 whose respective rear end forms a right angle returning with the rear end of the rod 11. When the rod 11 is pushed back, one of its re-entering angles engages with a projection 19 at right angles made at the bottom of the recess 15 of the handle, which locks the position of the handle on the rod. apart, the lateral lugs 18 constitute a reinforcement of the rod 11 in the region of the articulation, near the groove 16 and it provides an enlargement of the contact surface between the rod and the handle, which reduces the stresses compression on the lateral faces of the recess 15 of the handle, for the transmission of the torsional force. Thanks to this arrangement and to the particular shape of the recess 15, the handle 12 can advantageously be made of molded synthetic material.

FIG. 5 illustrates another embodiment of a screwdriver according to the invention, comprising a rod 21 which is articulated on a handle 22 in the same manner as in the case of FIG. 1, but the articulation of which is located near one end of the handle 22. In this way, in the first position of the handle 22, the rod 21 is almost entirely embedded inside the handle, of which only protrudes from the screwdriver blade 4. The user thus has a particularly short screwdriver.

In the second position of the handle 22a, shown in broken lines, the user has a screwdriver whose length is greater and on which he can exert an increased torsional moment thanks to the angular position of the handle.

Of course, the tool represented in FIG. 5 can also be provided with an articulation similar to the articulation described above with reference to FIGS. 3 and 4. Likewise, instead of the screwdriver blade 4, it could include a socket wrench or a standardized connector for socket wrenches.

 In general, the present invention is not limited to the embodiments described but it extends to all modifications or variants obvious to those skilled in the art.

Claims (11)

Claims
1. Manual clamping tool comprising a straight rod and an elongated handle, characterized in that the handle (2, 12, 22) is connected to the rod <1> (1, 11, 21) by a joint with transverse axis ( 3), arranged to allow the handle to pivot at an angle of 90 degrees relative to the rod between a first position, in which it is aligned with the rod, and a second position, in which it is perpendicular to the rod.
2. Tool according to claim 1, characterized in that it comprises locking means (7, 8, 18> 19) of -the handle relative to the rod in the first and the second position.
3. Tool according to claim 2, characterized in that the rod is provided with a longitudinal groove (6, 16) in the region of the joint, in that the handle is provided with a transverse pin (7, 17 ) which engages in this groove and which coincides with the axis of the joint and in that the locking means comprise two housings (7, 8) formed in the handle in the extension of the rod towards the rear in its two positions, to allow the rod to slide longitudinally and to engage in one of said housings.
4. Tool according to any one of the preceding claims, characterized in that the handle and the rod each comprise a pair of respective flat surfaces, pependicular to the axis of the joint (3), the respective surfaces being in support l 'one against the other to transmit a torsional moment in the rod.
5. Tool according to claim 4, characterized in that the rod has a rectangular cross section in the region of the joint.
6. Tool according to claim 4, characterized in that the rod has a square cross section in the region of the joint.
7. Tool according to any one of the preceding claims, characterized in that the articulation is placed substantially in the middle of the length of the handle (2, 12).
8. Tool according to any one of claims 1 to 6, characterized in that the articulation is placed near one end of the handle (22).
9. Tool according to any one of the preceding claims, characterized in that one end of the rod is in the form of a screwdriver blade (4).
10. Tool according to any one of claims 1 to 8, characterized in that one end of the rod is in the form of a socket wrench (14a).
11. Tool according to any one of claims 1 to 8, charac terized in that one end of the rod is in the form of a standard polygonal connector (14) for an assortment of socket wrenches.
FR8415139A 1984-10-01 1984-10-01 Manual tightening tool Withdrawn FR2570975A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8415139A FR2570975A1 (en) 1984-10-01 1984-10-01 Manual tightening tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8415139A FR2570975A1 (en) 1984-10-01 1984-10-01 Manual tightening tool
FR8503920A FR2578772A2 (en) 1984-10-01 1985-03-14 Manual clamping tool

Publications (1)

Publication Number Publication Date
FR2570975A1 true FR2570975A1 (en) 1986-04-04

Family

ID=9308287

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8415139A Withdrawn FR2570975A1 (en) 1984-10-01 1984-10-01 Manual tightening tool

Country Status (1)

Country Link
FR (1) FR2570975A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2718991A1 (en) * 1994-04-20 1995-10-27 Facom Torque transmission mechanism, and screwdriver provided with such a mechanism.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE13668C (en) *
CH304816A (en) * 1952-09-01 1955-01-31 Baumann Paul Screwdriver.
FR2032555A5 (en) * 1969-03-31 1970-11-27 Azarian Herve
DE2715379A1 (en) * 1977-04-06 1978-10-12 Guenther Metzger Screwdriver with non-metallic handle - adjustable between normal position and swivelled-out position at right angle to axis of blade
US4170909A (en) * 1977-09-23 1979-10-16 Wagner Theodore R Tool holder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE13668C (en) *
CH304816A (en) * 1952-09-01 1955-01-31 Baumann Paul Screwdriver.
FR2032555A5 (en) * 1969-03-31 1970-11-27 Azarian Herve
DE2715379A1 (en) * 1977-04-06 1978-10-12 Guenther Metzger Screwdriver with non-metallic handle - adjustable between normal position and swivelled-out position at right angle to axis of blade
US4170909A (en) * 1977-09-23 1979-10-16 Wagner Theodore R Tool holder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2718991A1 (en) * 1994-04-20 1995-10-27 Facom Torque transmission mechanism, and screwdriver provided with such a mechanism.
WO1995029041A1 (en) * 1994-04-20 1995-11-02 Facom Tightening tool such as a screwdriver
US5816119A (en) * 1994-04-20 1998-10-06 Facom Tightening tool, especially screwdriver

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