A METHOD AND A DEVICE TO PREVENT RELATIVE DISPLACEMENT BETWEEN TWO ELEMENTS

Abstract: To prevent relative turning between elements (1 and 2) which are to be in engagement by threads with each other one of the elements (1) is provided with a recess (5) and the other element (2) with a hole (6). The recess (5) is shaped so that the walls (15) defining the recess at least in one direction are located at a shorter distance from one another than the walls defining the hole (6). When the two elements (1 and 2) have been joined into engagement with each other and into the intended, relative position, the opening (6) is supplied with a locking element which is brought to a displacement into the opening and into an engagement with said walls (15) defining the recess (5) at the same time as the locking element is into engagement with the hole (6), whereby the two elements are locked against relative turning. The locking element can be a part of a tool used when the elements are joined to the intended, relative position, whereby the locking element is cut off from the tool.

Description: A METHOD AND A DEVICE TO PREVENT RELATIVE DISPLACEMENT BETWEEN TWO ELE Technical field: A The present invention relates to a method to prevent relative displace between a first element arid a second element which elements are intende be in engagement with each other and in applicable cases to connect or 5 one or more bodies or one or more bodies to a first element or to a fou ation, whereby the first element is -provided with at least a first enga ment device and the second element is provided with at least a second engagement device. 10 Background: There is a need for a new method to ensure connection between two eleme which are to be hold together by connection devices. In this respect th connection devices need to be able to be locked against relative turnin and in that respect in an intended position, i.e. one shall not need to 15 search for a particular position where relative locking can be done. Lo ing should thus be effected stepless. The bodies or elements which are be connected can consist of one or more bodies which are to be connecte to an unit, for example an implement, an apparatus or the like. 20 Technical problems: Known methods and devices of this kind are complicated in use and in th constructions which leads to unnecessary heavy costs. Futhermore, the methods and devices are adapted to particular devices, elements or othe bodies which are to be connected or hold, whereby the relative locking 25 between the elements cannot be done infinitely variable or stepless but the locking is applicable only in fixed relative positions between the elements. This results in that devices which are to be connected or hol could fit loosely or that the construction in which such a method and device is used is going to be ramshackle. Further, the model of these k 30 methods and devices involves that they are usable only for one single or only a few coherences. The solution: When using a method and a device according to the invention the require- 35 ments are met at the same time as the disadvantages of existing devices methods are eliminated. Thus, the elements which are to be in engagement .with one another, for example for connection or holding of devices, can locked in any relative position. This results in that the devices whic to be connected or hold are going to be securely fixed and fasten if d able or that bodies which are connected, anchored or hold together int unit can be securely fasten to. the elements but movable, turnable, etc desirable, as the elements can be relative fixed or locked in any desi and intended position. Further, the method and the device according to invention can be used for a number of different applications and in a number of varying devices, constructions, etc. The method is easy to u and the device is simple in its construction and is adaptable in desig dimension and strength according to the intended use. The device can b produced in a simple way and to a low cost. The method is also adaptab and applicable in the innumerable coherences and with a device produce a low cost. Furthermore, the method can also be applicable to or into ing devices, constructions, etc. as well as to new ones. A method in a ance with the invention is thus characterized in that the said first e is provided with a recess which is directed towards a said second elem which is provided with an opening, whereby the said recess is shaped w cross-section which in at least one direction across the recess is sho the largest cross-section of said opening. Further, that a said first second element are joined into engagement with each other and into an intended relative position, for example by the assistance of a tool, a further that a locking element is supplied to the said opening and is brought to a displacement into the opening and into an engagement into recess. According to an another characteristic of the method in accordance wit invention the said locking element is cut off from a tool, by means of the said first and second elements are brought into the intended, rela engagement position with each other, after which the locking element i brought into engagement with the said recess. The invention is also related to a device for connecting or to hold on more bodies or one or more bodies to a first element or to a foundatio to prevent a relative displacement and/or turning between the said fir element and a second element. In this respect, the device comprises a element and a second element which elements are arranged to be brought engagement with each other for the said connection, holding or similar device is thus characterized in that the said first element shows enga devices and one or more recesses and the said second element shows a s engagement device and an opening, whereby the said recess shows a cross section which in at least one direction across the recess is short of t largest cross-section of said opening. Further, that a locking element the shape of a peg, a pin or similar is arranged into the said opening into engagement with the material defining the said recess. The locking element can be formed as a simple tool, for example a rod-s tool, as a hexagon designed tool. According to one embodiment of the de in accordance with the invention the device is characterized in that th locking element is the tool which is intended to be used for the relati displacement between the elements and further that the tool in this res is formed as for example a hexagon designed tool. Furthermore, that the opening of the second element shows a shape for an engagement by a tool whereby the opening is for example a non-circular hole or according to embodiment shown a hexagon hole. According to additional embodiments on part of the tool is separated from the tool to form the said locking el Of course, the locking element or the tool can be formed of separate pe taps or similar. For the prospect of an easy or possible dismounting of device or dismantling of the connected or hold bodies, elements or the in this respect, the device can, according to an another embodiment of locking element, show an engagement portion for a tool. The engagement ion is for example in the shape of a hole, socket, like that but thread facilitate the engagement of a tool with the locking element. As said, the device is useful for a number of varying coherences of whic one coherence is for example to hold and/or lock weights on a dumbbell. device is according to one embodiment thus characterized by the fact, t the said first element is formed as a supporting bar for a dumbbell, whe the said second element is a holding or locking device for weights arran on the support bar of the dumbbell. The said second element can in this respect show a flange which is arranged as a stop device or stop rabbet one of the said weights or for the weights arranged at both ends of the support bar. Brief description of drawing: Further characteristics of and advantages with the method and the device accordance with the invention will be apparent by embodiments in the fol ing description of the invention, whereby a simultaneous reference will made to the accompanying schematic drawing, in which Fig. 1 shows from side a plan view of an example of one part of the device according to t invention, Fig. 2 shows from one side a plan view of a second part of t device according to the invention, Fig. 3 shows from a second side a pl view of the part of the device according to Fig. 1, Fig. 4 shows from a second side a plan view of the part of the device according to Fig. 2, Fig. 5 shows from one side a plan view of one part of a locking element and/or a tool which can be included or- can be used in the device accord to the example shown and Fig. 6 shows in a plan view an example of appl ation to the method and device according to the invention. Best mode for carrying out the invention: With the reference designations 1 and 2 respectively in Figs. 1 and 2 a thus shown a first and a second element or body which are to be connect with each other and in that respect into a relative fixed and locked po ion. In applicable cases the elements 1 and 2 can or will bear, hold, c nect, etc. elements or bodies 17 which thus are arranged between the sa first and second elements 1, 2 before their joining. According to the embodiment the first element 1 shows an engagement device 3 and the sec element 2 an engagement device 4. The engagement devices 3, 4 can be fo as customary engagement devices, for example as an ordinary and useful engagement device in the shape of threads, as between a screw, bolt, a threaded " tap or similar and a nut or similar. In accordance with the in ion the first and second elements 1, 2 are thus provided with engagemen devices and according to the embodiment one of the elements, for exampl the said first element 1, is provided with an engagement device in the of a thread which is modelled on a body 7, part, tap or the like and th other element, for example the said second element 2, is provided with thread 10 which according to the example is arranged in a body 8, part nut and is in the shape of an internal thread 10 which is intended to b able to be in a threaded engagement with thread shown by the body, part tap 7 or the like. According to the example the one element, for exampl the said first element 1, further shows or is provided with a recess 5 similar and the other element, for example the said second element 2, w an opening 6, hole or similar. The dimension of the recess 5 and the op 6 differs from each other or that the cross-section of the recess and t opening is deviating from each other. In accordance with the embodiment the first element 1 shows a portion 9 a bearing handle 9 and a sleeve 11 or a grasp which according to one em ment is turnable arranged on the portion 9 when it forms a grasp of for A example a dumbbell 18, see Fig. 6. In this case the second element 2 fu 5 shows a figure of a locking device in the shape of a nut provided with flange 12 into which the opening 6 or the hole reaches for the possibil for a tool or a locking element to pass through the element 2 in order reach an engagement with the element' 1 or its recess 5. 10 With further reference to Fig. 3 it appears from this that the recess 5 a certain shape with a given sectional dimension. From Fig. 4 it furthe appears that the opening 6 has a shape and/or sectional dimension devia from the recess 5. According to the example illustrated the opening 6 i designed as a hexagon hole, whereby a simple tool in the shape of a hex 15 tool can be brought into engagement with the element 2. The uniting of elements 1, 2 or their engagement devices 3, 4 can by this be facilitat by the possibility to use a tool. The recess 5 can in this respect be f as a socket with a diameter or cross-section which is short of or at le in one direction across the recess is short of the largest cross-sectio 20 the opening 6. The one or said first element 1 is formed as a journal 7 or similar wit engagement device in the shape of a thread and the recess 5 is arranged the axial direction of the journal 7. The other or said second element 2 25 formed as a nut device 8 or similar with an engagement device 4 in the s of a thread 10. The said opening 6 is arranged in an end wall 12, flange the like shown by the nut or similar and in that respect in such a way t a locking element 13 can be introduced into the opening 6 and preferably arranged non-turnable into the opening in relation to the second element 30 but also be able to be brought or displaced into the opening 6 in a dire ion towards the first element 1 or the journal 7 and in that respect be able to be introduced into the recess 5. In Fig. 5 is shown a tool 14 in the shape of a hexagon designed tool whi 35 as a tool can be used when the elements 1, 2 are joined and brought into engagement with each other, whereby the both elements by means of implem assistance can be brought into an intended, relative position. If an ano tool or an another locking element is used instead of the hexagon tool t . opening 6 is showing as well a non-circular hole or an another adapted s for a locking element with a corresponding external shape in order that locking element is able to be fixed or to be arranged unturnable into t opening. One embodiment of a locking element is evident from Fig. 5, whereby it shown that the tool 14 can be or be used as a locking element 13 as wel The locking element 13 can also be shaped as a separate element, for ex in the shape of a split pin, pin or ' the like, and can show an engagemen portion arranged in an end portion or an accessible part of the locking element. The engagement portion, for example in the shape of a socket, threaded hole for the engagement of a tool with the locking element, is arranged for a prospective dismounting of the locking element if necess and in that case by means of for example a tool, threaded pin or puller engagement portion can also be a through hole, an engagement or the lik When the tool 14 is used as a locking element 13 one part of the tool i off after that the tool has been used for the joining of the elements 1 which by the assistance of the tool have been brought into an intended, relative position. In this case the end portion of the tool can be sepa from the remaining part of the tool. After this or before the separatio the cut off the tool or locking element is displaced into the opening 6 into engagement with the element 1 or its recess 5. In this respect the locking element can be brought to be some let in into the opening 6. Both elements 1 and 2 are joined into engagement with each other and to intended, relative position and for example by the assistance of a tool and where applicable with supplementary devices for the device introduc arranged between the elements. The supplementary devices can be for exa in the shape of flanges, holder devices, etc., one or more bodies which arranged for being supported, holded, anchored, connected, joined into unit or an another body. Then the two elements 1, 2 are going to be rel ely locked or fixed and thus carrying bodies if any. At this the tool 1 cut off or taken out to be replaced by a locking element 13 which is di placed through the opening 6 and into engagement with the recess 5, whe the locking element is meant to be brought into engagement with or demo the material 15 surrounding or limiting the recess 5. This is done by m of a hit or the like stuck on the free end of the locking element 13 an therewith with such a force that the locking element,can be displaced i the recess 5. Hereby, the locking element cut the material 15 in the re 5. The locking element consists of a harder material than the material surrounding the recess, for example a tempered material as steel, if th first element or tap consists of metal. The method and the device according to the embodiment are shown in conn ion with dumbbells 18. In dumbbells it is difficult to keep a nut or si holding devices to remain in its intended position, whereby it can happ that the nut or similar is unscrewed resulting in that the weight or we 17 fall off the dumbbell and in tha -respect damage fittings or what's the person wielding the dumbbell. When using the method and the device accordance with the invention it is guaranteed that the bodies 17 or we are left on the supporting bar 9 of the dumbbell 18. Furthermore, weigh for instance should be borne loosely or turnable on such a supporting b and therefore the weights in this case are not going to be squeezed tog A washer 16 is arranged on the bar 9 as counter-flange. Said washer can against a projection, shoulder or the like shown by the supporting bar o against a handle 11 which in the shape of a sleeve is arranged turnable the bar. The element 2 or nut device shows a flange 12 as a second count flange for the weights or abutment on the other side of the weights. Without exceeding the scope of the concept of the invention modification of the method and the device should be possible. Thus, the method and th device is of course applicable in a number of different connections wher two elements, bodies, parts or the like are to be connected or hold as f instance between a piston and a piston rod into a piston engine, hydraul piston into a hydraulic cylinder, different holding or locking joints or holding or locking connections, etc. The method and the device is thus n restricted to what has been shown and described in connection with the embodiment but only to the following claims.

Claims: Claims: 1. A method to prevent relative displacement between a first element (1) and a second elβaent (2) which elements ' are intended to be in engagement with each other and in applicable cases to connect or hold one or more bodies or one or more bodies to a first element (1) or to a foundation, whereby the first element is provided with at least a first engagement device (3) and the second element is provided with at least a second engagement device (4), characterized * in that the said first element (1) provided with a recess (5) which is directed towards a said second eleme (2) which is provided with an opening (6), whereby the said recess is shaped with a cross-section which in at least one direction across the recess is short of the largest cross-section of said opening, that a sai first and second element (1 and 2) are joined into engagement with each other and into an intended relative position, for example by the assist- ance of a tool (14), and further that a locking element (13) is supplied to the said opening (6) and is brought to a displacement into the openin and into an engagement into the said recess (5). 2. A method in accordance with claim 1, characterized in that the said locking element (13) is cut off from a tool (14), by means of which the said first and second elements (1 and 2) are brought into the intended, relative engagement position with each other, after which the locking element (-13) is brought into engagement with the said recess (5). 3. A device to connect or to hold one or more bodies (9, 11, 17) or one more bodies (17) to a first element (1) or to a foundation and to preven a relative displacement or turning between the said first element (1) an a second element (2) in accordance with the method according to claim 1, whereby the device comprises a first element (1) and a second element (2 which elements are arranged to be brought into engagement with each othe for the said connection or holding, characterized in.that the said first element (1) shows engagement devices (3) and one or more recesses (5) an the said second element (2) shows a second engagement device (4) and an opening (6), whereby the said recess (5) shows a cross-section which in at least one direction across the recess is short of the largest cross- section of said opening (6), that a locking element (13) in the shape of peg, a pin or similar is arranged into the said opening (6) and into engagement with the material (15) defining the said recess (5). 4. A device in accordance with claim 3, characterized in that the said firat βliβrøt (1) is formed as a tap (7) or similar with an engagement device (3) in tin shape of a thread, whereby the said recess (5) is arranged in the axial direction of the tap (7), whereby the said second element (2) is formed as a nut device (8) or similar with an engagement device (4) in the shape of a thread, whereby the said opening (6) is arranged in an end wall (12), flange or the like shown by the nut or similar or vice versa. 5. A device in accordance with claim 3 or 4, characterized in that the said opening (6) is formed as a non-circular hole for engagement by a t (14), for example a hexagon hole for a tool with hexagon head, whereby said first and second elements (1 and 2) can be arranged in an intended, relative position. 6. A device in accordance with claim 3 or 5, characterized in that the locking element (13) is a tool (14) or a part of a tool, for example a hexagon designed tool, whereby one part of the tool or the hexagon desig tool is separated from the tool or the hexagon designed tool to form the said locking element. 7. A device in accordance with claim 3 or 6, characterized in that the locking element (13) shows an engagement portion, for example a bore, fo the engagement of a tool with the locking element. 8. A device in accordance with any of the claims 3 - 7, characterized in that the said first element (1) is formed as a supporting bar (9) for a dumbbell (18), whereby the said second element (2) is a holding or locki device for weights (17) arranged on the said support bar (9), whereby th said second element (2) shows a flange (12) which is arranged as a stop device or stop rabbet for one of the said weights (17).

Inventors: SVENSSON JAN-ERIK, SVENSSON, JAN-ERIK
Applicants: SVENSSON JAN ERIK, SVENSSON, JAN-ERIK
Application year: 1986
Main classification: F16B39
IPC codes: A63B21, B25B23, F16B3, F16B39