A lightweight connector that can be mounted with standard hexagonal drive brackets.

Abstract

The invention relates to a connecting element (1) with a shaft (30) and a head (10). Accordingly, its novelty is that, in order to be assembled with standard hexagonal drive devices (40) and to reduce its weight, the said head (10) contains at least two contact areas (11) which include at least one of the disassembly contact surfaces (112) and the clamping contact surfaces (111), and the number of the said clamping contact surfaces (111) is greater than the number of the said disassembly contact surfaces (112). Figure 1

Description

1 TARIFF WEIGHT THAT CAN BE ASSEMBLED WITH SIX-CORNER DRIVE ACCESSORIES. A REDUCED NUMBER OF CONNECTORS TECHNICAL FIELD The invention describes a lightweight coupling element that can be mounted with standard drive devices. It is related to. PREVIOUS TECHNIQUE Fasteners are mechanical components used to hold different parts together. Widely used in many industrial sectors, particularly in the automotive and construction industries. They are used. 15 The connecting element is necessary for tightening during the assembly of the parts. The appropriate kit, socket, or external or internal key parts located in the head shape can be selected. Axial rotation is achieved by applying torque with the help of special drive devices. This is being carried out. The contact of the crimping devices used for the external and internal key forms is 20. Opening, tightening and loosening operations resulting from tolerances between surfaces compared to the main contact area of ​​torque transmission during axial rotation, the contact This causes it to occur through smaller areas on their surfaces. Among the crimping devices used with external and internal key forms are 25. Clearance due to tolerances, axial rotation for tightening and loosening purposes. during torque transmission, on the contacting switch surfaces, relative to the main contact area. This results in contact being made over smaller contact areas. Contact on surfaces Areas that do not perform this function have no other purpose than tightening and loosening. under these conditions, it remains idle. The material located in these aforementioned areas is 30 causing the weight of the fastener to be excessive This results in an additional weight increase. Weight reduction in fasteners. Their work often involves creating new designs by removing non-functional parts. is being created from the head form of the connecting element of the discarded material. Studies are being conducted to obtain this information. This situation presents limitations in terms of design. 35 It includes measures that limit the weight reduction rate to around 25%. 2 In weight reduction studies, the head shape changes due to the torque applied by the clamping device. Damage that causes it to deform and lose its original geometry, head shape It is also possible for situations to occur where its rigidity and strength are lost. In addition, In special design studies conducted for the use of special drive apparatus, in the form of a head Although the weight gain rates achieved are increasing, only 5 of the tightening and loosening operations Because this can only be done with the aforementioned special drive apparatus, the supply processes are prolonged, and Additional costs arise. That is, the weight that can be driven with standard clamping devices. Weight can be reduced with reduced fasteners and special drive devices. Using the wrong fasteners can also lead to different problems. In the known state of the art, United States number US2011116895A1 a threaded housing with a longitudinal axis for the fastener described in the application with design changes made on it in the form of a head with a hexagonal flange and without a flange. A form has been created that can be used with standard boring tools. With these changes... in the direction of tightening and loosening together, in head shape corresponding to multiples of sixty degrees, 15 Incoming, ears that make contact from 3 or 4 regions and neighboring ears connected to each other Concave curved surfaces connecting the ears have emerged. These head forms are 3-eared and 4-eared. They are referred to as shapes. In addition, the material used in the fastener To reduce the size, an inward hollow was created in the central part of the head shape. Yet another US application, US20160223005A1, concerns standard boring apparatus. The head provided is for various fasteners that can be repeatedly tightened and loosened with its help. It relates to the forms. In the designs given in this application, each of the six sides is symmetrical. a weak material indentation designed as a mirrored circular piece There are hexagonal forms containing regions. The aforementioned indentation forms are angled at 25°. Its placement in the shape of a head allows it to be unintentionally loosened by unauthorized persons, and An attempt has been made to provide a measure to prevent its dismantling. PCT application number WO8302983 concerns externally curved, clamping and loosening surfaces. The regions where they meet are 30 degrees on a circle concentric with the axis of the connecting element. Head forms are available for fasteners based on the principle of being. The invention refers to... In the forms, the alternating internal angle between two adjacent surfaces applying rotational force as being smaller and larger than 180°, so that the connection points between them It proposes designs that alternately lie on an outer and an inner tangential circle. These fasteners require the use of special clamps with the same geometry as the head shape. 35 It requires. 3 The formation of a locking load for tightening under the assembly conditions of the fasteners and Removing the locking force for the disassembly process of the aforementioned fastener This is achieved through key contact areas in the head shape. Here, clamping and In disassembly procedures, the appropriate kit or socket, found in the form of a bolt head, is used. The axial rotational force resulting from the torque applied to the key contact surfaces, 5 is transmitted to the connecting element. The connecting element in the known state of the art. In head form designs, symmetrical mirroring allows for extensions with similar geometries. or head shapes in the form of geometric repetitions of ears are preferred. This head in their designs, the clamping and key contact surfaces on the aforementioned head form Ensuring that the clamping device makes contact at an equal number of points in the disassembly direction and every 10 The situation involves having equal contact areas in both directions. However, the connection... tightening applied to provide the necessary locking load during assembly of the components torque, elastic interactions between assembly parts and fasteners, and friction. due to the conditions, the removal torque required to loosen the fastener It is higher. 15 In fastener assembly conditions, the torque applied for tightening and loosening purposes. axial rotational forces resulting from insufficient key contact surfaces This results in localized plastic deformation in the parts that come into contact with the drive apparatus. A stripping problem is encountered. If a stripping problem occurs, 20 The axial rotational force required for tightening and loosening the fastener. the required locking load cannot be transferred to the fastener by the drive device. This is not possible. Consequently, the assembly process cannot be carried out as required. It cannot be delivered. In the known state of the technique, stripping is usually done to avoid the problem of head shape. a fastener that provides the same form but a higher percentage of key contact surface. Specialized drive devices are used, or as another solution, sufficient switches are available. The head height is increased to provide more contact area. However, this also requires extra space. This leads to the use of materials. 30 In weight reduction efforts, the inward shaping of the central part of the head is often emphasized. correctly, in familiar shapes such as cylindrical, spherical, or fastener head The outer edges of the form are hollowed out inwards while maintaining a certain wall thickness. Weight reduction is achieved through this process. Additionally, the inner 35 is designed in the shape of a head. tightening and loosening of the fastener using key components and Although weight reduction has been achieved in the head shape, the dimensions of the wrenches to be used and 4 The weight reduction achieved due to tolerance ranges is at a lower level. It remains. In conclusion, all the problems mentioned above necessitate an innovation in the relevant technical field. It has made it mandatory. 5 A BRIEF DESCRIPTION OF THE INVENTION The present invention aims to eliminate the aforementioned disadvantages and contribute to the relevant technical field. It involves a reduced-weight fastener designed to offer new advantages. 10 One aim of the invention is to achieve the desired torque and / or locking load during assembly. where the stripping problem is not experienced to the extent desired for an effective connection. a fastening element that makes it possible to achieve connections that can be locked to reveal. 15 Another purpose of the invention is to provide a special actuator for tightening and loosening operations in assembly conditions. can be used with traditional hexagonal head borers without the need for an adapter. The goal is to introduce a connecting element. Another aim of the invention is to address one of today's industrial trends: lightweight and high-performance. traditional fasteners that serve the use of high-strength components The goal is to create a fastening element with a unique, differentiated head shape. Another aim of the invention is to provide an equal 25 in both tightening and loosening directions, as is currently the case with the art. tightening and loosening torque through a number of key contact points and contact areas Unlike the function of transmitting to the fastener, loosening in the tightening direction. A coupling in which torque transmission occurs through more key contact points depending on the direction. The goal is to reveal the element. Another aim of the invention is to eliminate the clamping that negatively affects assembly performance. and the wrench acted upon by the axial rotational force generated by the application of the removal torque. A solution to the stripping problem that occurs when contact areas are insufficient. The aim is to provide sufficient key contact areas without experiencing stripping problems, using traditional methods. 35 compared to fasteners with a hexagonal head, through fewer contact points. A connecting element that provides this has been introduced. Another aim of the invention is to deviate from the traditional hexagonal head shape design in the head form that is the subject of the invention. Unlike fasteners with a head, without symmetrical mirroring. created by connecting the contact areas with concave arcs, the head A lightweight connection thanks to a significant reduction in the amount of material in its form. The goal is to reveal the element. 5 Another purpose of the invention is to create a head-shaped material during tightening and loosening. key form geometry resulting from deformation caused by reduction It prevents the head shape from being damaged in a way that would cause it to lose its shape. Thus, the head The form is maintained by performing a relief in the center of the head, a conventional relief. 10 In contrast to their forms, the characteristic main boundaries of the head form are taken as a reference. This was achieved. Accordingly, a prismatic and axially asymmetric discharge was created. In the resulting head shape, a link was created that achieved much higher rates of weight gain. The element is being presented. Another purpose of the invention is to improve the shaping production applied within the scope of the cold forging process. The goal is to create a fastening element that conforms to these methods. All the purposes mentioned above and those that will emerge from the detailed explanation below. The present invention, for the purpose of realizing a connection element with a shaft and a head, is 20 It is related to this. Accordingly, the innovation lies in being assembled with standard six-sided drive devices and the weight to be reduced, the aforementioned head's disassembly contact surface and clamping contact surfaces It must contain at least two contact zones, at least one of which is included, and the aforementioned clamping contact surface. The number of contact surfaces mentioned is greater than the number of disassembly contact surfaces. Thus, the connection The head shape is 25, ensuring the element's strength is maintained and eliminating the need for special drive devices. While maintaining these standards, significant weight reduction and cost can be achieved. A characteristic feature of a possible design of the invention is that the number of contact areas is four. This ensures optimal contact for torque transmission, maintaining strength while maintaining the connection. The weight of the element is reduced. 30 A feature of a possible design of the invention is that only two of the contact areas are clamped. It contains a contact surface. In addition, the other two contact areas are both for squeezing. It includes both a contact surface and a disassembly contact surface. Thus, it includes a clamping contact surface. By saving on the materials used in its construction, the weight is reduced. 35 6 A characteristic feature of a possible design of the invention is that there are four squeezing contact surfaces. This provides a wider contact area during the tightening process, thus increasing torque efficiency. is being increased. A characteristic feature of a possible design of the invention is that the disassembly contact surfaces are two. 5 Thus, the loosening process is performed with a smaller surface area, reducing the head weight, and Material savings are achieved. A characteristic feature of a possible construction of the invention is that the head has at least an asymmetrical, prismatic form. It includes a groove. This reduces the amount of material while maintaining head rigidity. This also results in weight savings. A characteristic feature of a possible design of the invention is that the head is formed by reducing the amount of material. It contains at least one void. Thus, unnecessary material is removed. The connecting element is made lighter. 15 A characteristic feature of a possible configuration of the invention is the radius between the contact regions, respectively. a first curve, a second curve, a third curve, and a fourth curve, decreasing in size This ensures that the fastener's strength is not negatively affected. Maximum unloading, and therefore weight reduction, is achieved. 20 The characteristic of a possible construction of the invention is that the first curve mentioned, the second curve, The third and fourth curves are concave arcs. Thus, the strength... The void can be created without changing the material, and the weight can be reduced. Also, the material used... Since the quantity has decreased, costs have also decreased. 25 A characteristic feature of a possible configuration of the invention is at least one flange between the head and the shaft. This ensures the strength of the connection by preventing slipping and loosening during assembly. is being increased. BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows a representative isometric view of the fastening element that is the subject of the invention. Figure 2 shows a top view of the head of the connector that is the subject of the invention. 35 It has been given. 7 Figure 3 shows a side view of the connecting element that is the subject of the invention. Figure 4 shows another isometric view representing the fastener element that is the subject of the invention. Figure 5 shows an isometric view of the fastener element, the subject of the invention, from different angles. It has been given. Figure 6 shows an isometric view of the fastener element that is the subject of the invention, representing it from different angles. It has been given. Figure 7 shows the connector and the head mechanism that constitute the subject of the invention. A representative isometric view of the connectable drive apparatus is given. Figure 8 shows the front view of the connecting element, which is the subject of the invention, connected to the actuator. The appearance is given. 15 Figure 9 shows the head of the connecting element, which is the subject of the invention, in contact with the actuator. The AA section is shown along with the compression direction. Figure 10 shows the head of the connecting element, which is the subject of the invention, connected to the drive apparatus at a distance of 20°. Section AA is shown along with the dismantling direction. DETAILED DESCRIPTION OF THE INVENTION In this detailed description, the subject of the invention, the fastener (1), is only to better understand the subject. It is explained with examples that do not create any limiting effect on understanding. Figure 1 shows a representative isometric view of the connecting element (1) that is the subject of the invention. The present invention overcomes the aforementioned disadvantages in the prior art. 30% of lightweight and high-strength components are coming and are one of the industrial trends. special head (10) form developed to be the counterpart of (1) in the connecting elements It is related to a new generation fastener (1). The connecting element (1) consists of at least one head (10) and at least one shaft (30) part. In addition It can also include at least one flange (20). The connecting element (1) is essentially a bolt. However, 35 in alternative configurations, any externally threaded fastener such as a screw (1) It is possible. 8 The head (10) part is located above the flange (20) part and the circumference of the flange (20) from the form of the head (10) similar to traditional hexagonal flange fittings (1). It has a larger diameter. In addition, the head (10) in relation to the aforementioned flange (20) The flange angle in the area above is between 3° and 10°. Preferably, the flange angle is between 5° and 7°. It is between them. Also, the flange angle in the area on the flange (20) and head (10) is conventionally six 5 The flange aspect of the angled flanged connection elements (1) is lower. This allows for cold In order to facilitate production in the shaping process, the height of the head (10) The optimum flange angle (20) value was obtained for easy adjustment. The head (10) has an asymmetrical form. That is, it is created without symmetrical mirroring. 10 What is meant by the expression "without symmetric mirroring" is that the geometry of the head (10) is symmetrical. It was not copied on both sides in this way, but designed in a different structure. In other words, the invention The subject head (10) form has an asymmetrical form. This head (10) design, the mentioned head (10) to reduce the amount of material used in the region and the torque of the fastener (1) It helps to optimize its durability. 15 The head (10) enables a drive apparatus (40) to apply force to the connecting element (1) of a drive apparatus (40). It contains at least two contact zones (11). In the preferred configuration, the contact zone (11) there are four. Contact areas (11) from the axial rotation force formed. It is designed so that it will not be deformed. Drive device (40), contact 20 By applying rotational force to the head (10) part of the connecting element (1) from the regions (11) It enables rotation in the tightening direction (I) or the loosening direction (II). Drive device (40) can be a standard key. The mentioned contact areas (11) are tightened in the direction of (I) 25 by means of the actuator (40). the axial rotation force created by the applied torque on the connecting element (1) the drive apparatus (40) used to transmit the signal, namely the substandard corner boring machine, It contains at least one squeezing contact surface (111) that comes into contact with the surfaces. Preferred In the configuration, the squeezing contact surface (111) is located in each contact region (11), making four. is. 30 The dimensional dimensions of the clamping contact surfaces (111) are based on the main standard for fasteners. “ISO 898-1 - Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs with specified property classes — Coarse thread and fine pitch The 35th thread has the highest fastener strength class of 12.9, as defined within the scope of "thread". corresponding to the strength values ​​and “ISO 898-7 - Mechanical properties of fasteners Part 7: Torsional testing and minimum torques for bolts and screws with nominal 9 Minimum fracture torques given within the scope of the "diameters 1 mm to 10 mm" standard. It is determined according to the sufficient key contact areas that will provide. The most important factors affecting the performance of fasteners under assembly conditions (1) To reach the locking load, which is one of the parameters, 5 are applied during the tightening process. The magnitude of the axial rotational force generated in the contact regions (11) with the torque is important. The contact areas (11) located in the head (10) during tightening the connecting element (1) Axial shift occurring at the highest torque values ​​that causes it to lose functionality Even when rotational force is applied, there is no abrasion in the aforementioned contact areas (11). It has been optimized to provide durability. 10 To provide the locking load required for the assembly of the fasteners (1) The applied tightening torque increases the elasticity between the assembly parts and fasteners (1). Due to the interaction and friction conditions, loosening of the connecting element (1) It is higher than the required removal torque. Therefore, the fastener (1) 15 For the transmission of the loosening torque to the fastener (1) to be applied for loosening In direction (II), a smaller contact surface is sufficient compared to squeezing. In the contact area (11), the axial torque created by the applied torque in the loosening direction Standard 20 used to ensure that the rotational force is transmitted to the connecting element (1). At least one disassembly contact surface in contact with the surfaces of the hexagonal boring machine (112) It is located. In accordance with the information stated in the paragraph above, the aforementioned dismantling The contact surface (112) is two in the preferred configuration. That is, the one located on the head (10) While two of the four contact areas (11) have a disassembly contact surface (112), each In the contact area (11) there is a clamping contact surface (111). Thus, loosening 25 During the assembly of the connecting element (1) without experiencing any problems due to stripping. It can be safely removed from the mounting area. Removal contact surfaces (112) They are located in the contact areas (11) that are opposite each other. That is, the disassembly contact surfaces. (112) apply the axial rotation force (II) in the removal direction equally to the wrench holding 30 in the contact areas located on opposite diagonals in order to transmit to their surfaces (11) is located. In the preferred application, two disassembly contact surfaces (112) are located between two There are several clamping contact surfaces (111). Thus, the connecting element (1) by ensuring that the applied forces are transmitted in a more balanced and stable manner in the head (10) prevents any abrasions that may occur. 35 When the head (10) is viewed from the top perspective as in Figure 2, the mounting of the connecting element (1) in the areas of the head that do not come into contact with the (10) key so as not to affect its performance The weight was reduced by reducing the material, i.e. by emptying the head (10). The voids are the spaces bounded by concave arcs between two contact surfaces (11). (16). The heights of the gaps (16) are 5, which is the height of the connecting element (1) in the present invention. It has the same height as the key holding height. The mentioned gap (16) is shown in Figure 9. As can be seen, after the drive apparatus (40) is attached to the head (10), the drive is connected to the head (10). It is formed between the apparatus (40). To make it more understandable, the gap (16) connection causing the rigidity and strength of the form of the element (1) head (10) to be lost It is created by reducing the material in such a way that it will not be possible and the connecting element (1) head (10) 10 It helps to reduce its weight. As a result of the gaps (16) created, the head (10) is respectively asymmetrical. first curve (12), a second curve (13), a third curve (14) and a fourth curve (15) It includes four contact zones (11) to each other respectively 15 thanks to the first curve (12), the second curve (13), the third curve (14) and the fourth curve (15) They are interconnected. Therefore, the curves mentioned (by the curves mentioned, I mean the first curve (12), the second curve (13), the third curve (14) and the fourth curve (15) are two The contact region (11) is located between them. The mentioned curves are in the form of concave arcs. It has a radius. Since there are four curves, there are four gaps (16). 20 As a result, the contact areas (11) are not a straight line as in the current technique, but curves. They are connected to each other. In order to reduce the use of material in the head (10). To create the mentioned curves, material was removed from the head (10) and gaps (16) were created. The radius values ​​of the curves are formed from the first curve (12) to the fourth curve (15) It is shrinking as can be seen in Figure 2. This results in an asymmetrical head (10) 25 This creates the form. The gradual decrease in the radius values ​​of the curves, It creates a balance between the use of material and the rigidity of the fastener (1). In this way, the weight of the fastener (1) is reduced while maintaining its structural strength and Optimal material usage can be achieved. Symmetric mirroring, taking the central region of the head (10) as the geometric center. created without being made, head (10) form within the limits of the main geometric form the remaining, asymmetric, in the form of a rectangle (similar to prismatic geometry) at least one groove (17) It is located. With the inclusion of the mentioned groove (17) in the design, the connection The targeted weight reduction amount in element (1) is 35 for conventional hexagonal flange connection a weight advantage of at least 30% based on the weight of the head shapes of its components It provides. 11 Considering the outline of the discharge form, transitions are made via concave arcs. Sharp edges have been avoided by making the aforementioned gaps (16) and grooves. The amount of material between (17) and which defines the inner and outer limits of the head (10) geometry, to prevent stripping problems during the tightening and loosening process It has been optimized. The depth of the gap (16) and groove (17) is 5 from the weight of the head (10) of the material. The connection on the desired metric will be used in a way that maximizes the earnings. It is determined according to element (1). The dimensions of the head (10) form of the connector (1) are preferred for different metrics. The design can be revised according to the required key width measurement. Connection 10 In order to increase the usability of the element (1), each geometric shape of the head (10) Features and dimensions are ratioed according to a specific coefficient relative to the key width measurement. The flange diameter (20) of the mentioned connection element (1) is the desired head (10) bottom seating surface. (English: bearing surface) is determined according to the area it will have. Thus, the connection The connection safety is increased by reducing the risk of loosening of the element (1). 15 The characteristic form of the head (10) part of the connecting element (1) suitable for the invention, Cold forging is the main production method in the production of fasteners (1). It has been determined in accordance with the shaping techniques applied within the scope. Thus, high 20 where reduced weight fasteners (1) are needed. They can be produced quickly and easily in large volumes. In light of all that has been said, the invention works as follows: The connecting elements (1) The tightening torque applied to provide the necessary locking load for assembly, assembly Elastic interactions and friction between parts and fasteners (1) 25 Due to the conditions, disassembly required to loosen the connecting element (1) It is higher than the torque. Therefore, of the four contact areas (11) in the head (10) Only two of them have a disassembly contact surface (112) (see Figure 10). Therefore In Figure 9, the contact areas on the left and right (11) are only the clamping contact surface (111) Since it contains, it contributes to reducing the material from the connecting element (1). In addition, 30 as such, connecting the contact areas (11) in such a way that the durability will not decrease The head (10) contains four cavities (16) in the sections. These cavities (16) are respectively first curve (12), second curve (13), third curve (14) and fourth curve (15) It is formed. Due to the voids (16), the material is reduced and the weight It can be reduced. 35 12 Finally, the groove in the asymmetrical prismatic form (17) located in the center of the head (10) (essentially another gap) by reducing material while maintaining rigidity and strength. This allows for the wrench (40) to be turned in the tightening direction (I) during assembly. Tightening and loosening by applying force to the clamping contact surfaces (111) shown in Figure 9. By rotating in the direction (II), force 5 is applied to the disassembly contact surfaces (112) as seen in Figure 10. Tightening and loosening can be performed by applying this method. Therefore, the connecting element in question (1) of the invention is the conventional discharge form. on the contrary, the head (10) was created by referencing the characteristic main boundaries of the form. The trough (17), which is a prismatic form of drainage that is not axially asymmetric, voids 10 (16) and four contact areas (11) and only two of them have a disassembly contact surface (112) with the presence of the connecting element (1) without reducing its strength much more High rates of weight gain can be achieved. This allows for significant weight gain in the head. Reducing the head weight by at least 30% by eliminating unnecessary materials. This is ensured, and costs are reduced due to the use of less raw materials. 15 In conclusion, it is a highly durable product that can be assembled with substandard corner drive fittings. A fastener with significantly reduced weight has been developed. The scope of protection of the invention is specified in the claims attached hereto, and these detailed 20 The explanation cannot be limited to those given for illustrative purposes. Because a technically skilled person... the person, without deviating from the main theme of the invention, in light of what has been described above, similar It is clear that these structures can emerge. 13 REFERENCE NUMBERS GIVEN IN THE FIGURE 1 Fastener Head 11 Contact Zone 5 111 Squeezing Contact Surface 112 Removal Contact Surface 12 First Arc 13 Second Arc 14 Third Arc 10 Fourth Arc 16 Spaces 17 Grooves Flange Shaft 15 40 Drive Devices (I) Clamping Direction (II) Direction of Removal

Claims

14 REQUESTS 1. The invention is a connecting element (1) with a shaft (30) and a head (10); to be mounted with standard six-sided drive devices (40) and to reduce weight Accordingly, the aforementioned head (10) must have at least one 5 which contains only the clamping contact surface (111). the contact area and the disassembly contact surface (112) and the clamping contact surface (111) containing another contact area (11) and the mentioned squeezing contact surface (111) The number of the mentioned disassembly contact surfaces (112) is greater than the number of the contact surfaces.

2. According to claim 1, a connecting element (1) has the characteristic that the number of contact regions (11) is 10. There are four of them.

3. According to claim 1, a connecting element (1) has the characteristic of two contact areas (11) It contains only the squeezing contact surface (111).

4. According to claim 1, a connecting element (1) has the characteristic that the two contact areas (11) are both It contains both a clamping contact surface (111) and a disassembly contact surface (112).

5. A connecting element (1) according to claim 1, whose characteristic is; the clamping contact surface (111) There are four of them. 20 6. According to claim 1, a connecting element (1) has the characteristic of; the disassembly contact surface (112) There should be two of them.

7. According to claim 1, a connecting element (1) has the characteristic that the head (10) is asymmetric, 25 It contains at least one groove (17) in prismatic form.

8. According to claim 1, a connecting element (1) has the characteristic of being between contact areas (11). a first curve (12), a second curve (13), with the radius decreasing in order It includes a third curve (14) and a fourth curve (15). 30 9. According to claim 8, a connecting element (1) and its feature is; the first curve mentioned, (12), the second curve mentioned (13), the third curve mentioned (14) and the fourth curve mentioned at least one of the curves (15) is a concave arc. 35 10. According to claim 8, a connecting element (1) is characterized by its connection to the head of the drive apparatus (40). (10) after installation, first arch (12), second arch (13), third arch (14) and material from the part between the fourth curves (15) and the drive apparatus (40) It contains at least one gap (16) resulting from the reduction.

11. According to claim 1, a connecting element (1) is characterized by being between the head (10) and the shaft (30). It must contain at least one flange (20). 5

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