CZ308755B6 - Universal device for selectively tightening an adjustable element and a bolt - Google Patents

Abstract

Universal device (1) for selectively tightening two coaxially arranged elements, which tightens and adjusts the adjustable element (16) and the bolt (17) of the rear lamp of the car. The basic components of the device are the shaft (2) and the housing (3). The position of the shaft (2) in the housing (3) is manually adjustable in the axial direction, either the adjustable element (16) can be tightened independently according to the needs of the worker, or the screw (17), with a single tool. Alternatively, the device comprises two consecutive detachable shafts (19, 20) and two adjacent interconnected housings (21, 22).

Description

PATENT FILE (11) Document number:

308 755 (19)

CZECH REPUBLIC

OFFICE OF INDUSTRIAL PROPERTY

(21) Application number: 2020-109 (22) Logged in: 03/03/2020 (40) Published: (Bulletin No. 17/2021) 04/28/2021 (47) Granted: 03/17/2021 (24) Notice of award in the Gazette: (Bulletin No. 17/2021) 04/28/2021

(13) Document's type: B6 (51) Int. Cl .:

B25B13 / 48 (2006.01)

B25B 21/02 (2006.01)

B25B 23/142 (2006.01) (56) Relevant documents:

EP 1997955; US 5,490,439; GB 2486415; US 4106371; EP 0323166; US 4,565,112; US 1389468; EP 2445682.

(73) Patent holder:

ŠKODA AUTO a.s., Mladá Boleslav, Mladá

Boleslav II, CZ (72)

Ing. South Stránský, Mnichovo Hradiště, CZ

Jan Brynych, Mlada Boleslav, Mlada Boleslav II, CZ (54) Title of the invention:

Universal device for selective tightening of adjustable element and screw (57)

Universal device (1) for selective tightening of two coaxially arranged elements, by means of which tightening and adjustment of the adjustable element (16) and the screw (17) of the rear light of a car is performed. The basic components of the device are the shaft (2) and the housing (3). The position of the shaft (2) in the housing (3) is manually adjustable in the axial direction, whereby either an adjustable element (16) or a screw (17) can be tightened independently according to the worker's needs, with a single tool. In an alternative embodiment, the device comprises two mutually adjoining detachable shafts (19, 20) and two adjoining mutually connected housings (21, 22).

Universal device for selective tightening of the adjustable element and the screw

Field of technology

The invention relates to the problem of independently tightening two elements of a car's tail lamp with a single tool.

Prior art

At present, the rear group lamp of vehicles is adjusted using two separate tools. For assembly, the adjustable element and the center screw must be adjusted independently. To adjust the central screw, it is necessary to secure the adjustable element against rotation with another tool. To adjust the adjustable element, on the other hand, it is necessary to secure the central screw against rotation.

U.S. Pat. No. 4,565,112 A discloses a device which comprises an outer sleeve which serves to hold a nut and a pin which is pressed towards the screw. However, the center pin cannot be manipulated and the pin cannot be pushed or moved away from the screw. It is also not possible to transmit torque to the screw with the pin, and therefore the center screw cannot be adjusted.

US 1389468 A discloses a device for tightening an inner nut, which is located in the inner part of the device, the outer part of the device being shaped in shape with a washer during tightening, thus preventing its movement during tightening. The device, however, does not allow control of torque transmission to the inner or outer nut as required.

EP 2445682 A1 discloses a device for tightening screws with a central hole in which an inducing member is located. The device allows you to tighten the screw to the exact torque. To tighten, the outer sleeve is slid onto the screw head of the corresponding shape. The device includes a shaft that is terminated to abut the indicating screw member. At the beginning of tightening, the outer bushing rotates and the shaft also rotates. After a certain tightening, the movement of the shaft is prevented by friction with the upper surface of the screw. The outer sleeve continues to rotate and the correct moment by which the screw is tightened is determined on the basis of the angular displacement relative to the stationary indicating member. The solution, however, does not allow manual adjustment of the shaft position as required. The end of the shaft, which is pressed against the inducing member by a spring, is constantly connected to the inducing member during tightening. It is not possible to manually adjust the axial position of the shaft so that the end can come into contact with the inducing member as required, thus transmitting torque only to the screw or only to the inducing member. Therefore, the device could not be used to assemble the rear light of a car.

A solution that allows one of the screw connection elements to be adjusted independently is also disclosed in U.S. Pat. No. 7,735,397 B2. This solution discloses a tightening device which comprises an outer sleeve firmly connected to an arm to be tightened, this sleeve serving to attach a fixed part of the track switch. It further comprises an inner sleeve mounted concentrically, which is adapted to hold the nut, the inner sleeve being rotatably movable about its central axis by means of a hydraulic motor. The disadvantage of the solution is that it is not adapted for rotation by an external nozzle. Furthermore, it is necessary to use hydraulic fluid to rotate the inner sleeve, which increases the weight and cost, while at the same time reducing the accuracy and reliability of the tightening device. Furthermore, the document does not publish instructions on how to rotate the separately adjustable element and the central screw.

U.S. Pat. No. 5,490,439 A discloses a solution for a tightening tool device which comprises a sleeve adapted to hold, for example, an adjustable element, the sleeve being rotatably rotatable about its axis and the transmission of torque being effected by a planetary gearbox from an electric motor. A rotationally movable torque transmission tool is located concentrically with this sleeve. This tool is connected to an electric motor via a planetary motor

- 1 CZ 308755 B6 gearbox. The disadvantage of this solution is the need to use electrical energy to drive the tightening tool and the complicated design of the planetary gearbox.

British patent document GB 2486415 A discloses a tightening tool for independent tightening of a bolt and nut, which consists of three coaxial shafts which are connected to each other by rolling elements located in the grooves of these shafts. The central shaft is provided with an end for receiving a nut, while the rotation of the outer shaft does not rotate the inner shaft, which is adapted to hold the screw. In this case, the rolling elements ensure that the inner sleeve and screw do not rotate. However, this solution does not allow the screw or nut to rotate selectively.

Therefore, it would be desirable to come up with a solution that would allow the rear lamp to be adjusted so that the center screw and the outer adjustable member are operated independently with a single tool.

The essence of the invention

The above-mentioned drawbacks are to some extent eliminated by the universal device for the selective tightening of the adjustable element and the screw, the screw being located concentrically in the inner part of the adjustable element. The universal device for the selective tightening of the adjustable element and the screw comprises a shaft, a housing, a cover and a resilient element. The shaft includes a first shaft end with a shaped element adapted to transmit torque to the bolt, and further comprising a second shaft end that includes a shaped element adapted to receive a tightening tool. Between the first end of the shaft and the second end of the shaft comprises at least one protruding shaft element from the axis. The projecting shaft elements serve as a positive connection with the housing. The housing comprises a through hole, a first end of the housing with a shaped element adapted to transmit torque to the adjustable element, an area with an increased inner diameter of the housing and an inner groove of the housing. The shaped element of the first end of the housing serves as a shaped connection with the adjustable element. The cover includes a hole in the cover with a radius less than the distance of the protruding shaft element from the shaft axis and at the same time greater than the radius of the shaft. The cover thus prevents the shaft from sliding out of the housing. The shaft is coaxially positioned in the housing so that the first end of the shaft is located near the first end of the housing and there is a resilient element in the area with the increased inner diameter of the housing. The axial length of the area with the increased inner diameter of the housing is greater than the length of the projecting shaft element. The radius of the area with the increased inner diameter of the housing is greater than the distance of the projecting shaft element from the axis. The cover is located on the housing on the opposite side from the first end of the housing, the second end of the shaft projecting out of the cover through an opening in the cover. The shaft is thus accessible for receiving the tightening tool. The shaft is positionable between the first and second positions, wherein in the first position of the shaft the protruding shaft element is located in the inner groove of the housing and in the expensive position of the shaft the protruding shaft element is in the region of increased inner diameter of the housing. The shaft can be adjusted manually.

Preferably, the shaft comprises stop elements between the projecting shaft elements and the expensive end of the shaft. The cover has cutouts around the perimeter of the cover opening that are geometrically similar to the stop elements. The cover is rotatably movable on the housing in the axis of the housing. In the first position of the cover, the shaft stop element does not overlap with the cut-outs when viewed in the housing axis, and in the expensive position of the cover, the shaft stop element does not overlap with the cut-outs when viewed in the housing axis. The rotation of the cover relative to the shaft thus determines whether an axial displacement of the shaft towards the first end of the housing is possible.

The connection between the protruding elements of the shaft and the inner groove of the housing is made as a splined connection or a tongue connection, which guarantees the most efficient torque transmission. The protruding element of the shaft is thus a tongue or groove of the shaft and the connection is realized by inserting these protruding elements of the shaft into a corresponding inner groove in the housing.

Between the first end of the shaft and the second end of the shaft there is an area with an increased shaft diameter. This area with an increased shaft diameter has a smaller diameter than the area with an increased inner diameter of the housing. The area with the increased diameter ensures a more even distribution of force

- 2 CZ 308755 B6 acting from the flexible element on the shaft.

The shaped element of the first end of the housing comprises replaceable protruding pins. This guarantees a higher compatibility of the shaped element of the first end of the housing with the shaped element. The shaped element of the first end of the shaft comprises any of a group of cross, flat, torx or hex points. The shaped element allows the transmission of torque from the shaft to the screw. The shaped element of the other end of the shaft is n-edged, which allows the transmission of torque from the tightening tool to the shaft.

Preferably, the resilient element is a compression spring which defines the position of the shaft. Without the action of an external force in the axial direction towards the first end of the housing, the shaft is thus in the first position due to the spring.

The above-mentioned drawbacks of the prior art are to some extent eliminated by the second embodiment of the universal device for the selective tightening of the adjustable element and the screw, the screw being located concentrically in the inner part of the adjustable element. The universal device for selectively tightening an adjustable element and a screw comprises a first shaft, a second shaft, a first housing, a second housing, a first resilient element, a second resilient element and a cover. The first shaft includes a first end of the first shaft with a shape element adapted to transmit torque to the bolt, further comprising a second end of the first shaft that includes a shape element adapted to receive the second shaft. Between the first end of the first shaft and the second end of the first shaft includes an area with an increased diameter of the first shaft. This area with the increased diameter of the first shaft serves as a place for transmitting force from the first resilient element. The first housing includes a through hole and further includes a first end of the first housing with a shaped member adapted to transmit torque to the adjustable member, a second end of the first housing that includes a flange. The second end of the first housing includes an area with an increased inner diameter of the first housing. The second shaft includes a first end of the second shaft with a shape element adapted to transmit torque to the first shaft, and further includes a second end of the expensive shaft that includes a shape element adapted to receive the tightening tool. Between the first end of the second shaft and the second end of the second shaft comprises at least one projecting element of the second shaft from the axis of the second shaft. The second housing includes a through hole and further includes a first end of the second housing adapted to engage the second end of the first housing, an area with an increased inner diameter of the second housing, and an inner groove of the second housing. The housing includes an opening with a radius less than the greatest distance of the protruding element of the second shaft from the axis of the second shaft and at the same time greater than the radius of the second shaft. The first shaft is coaxially located in the first housing such that the first end of the first shaft is near the first end of the first housing and the increased diameter region of the first shaft is located in the increased inner diameter region of the first housing. Between increasing the inner diameter of the first housing and increasing the diameter of the first shaft is a first resilient element. The second shaft is coaxially located in the second housing so that the first end of the second shaft is located near the first end of the second housing. In the area with the increased inner diameter of the first housing is the first resilient element. The cover is located on the second housing on the opposite side from the first end of the second housing. The other end of the second shaft protrudes through the hole in the housing out of the housing. The second shaft is thus accessible for receiving the tightening tool. The second shaft and the first shaft are axially displaceable, and in the first position of the second shaft, the projecting element of the second shaft is located in the inner groove of the second housing. In the second position of the second shaft, the projecting element of the second shaft is located in the region with the increased inner diameter of the second housing. By moving the second shaft, the transmission of torque to the adjustable element or to the screw can be controlled.

The connection between the projecting elements of the second shaft and the inner groove of the second housing is made as a grooved connection or a tongue connection. This guarantees the most efficient transmission of torque from the expensive shaft to the second housing. The protruding element of the second shaft is thus a tongue or groove of the second shaft and the connection is realized by inserting these protruding shaft elements into a corresponding inner groove in the second housing.

Preferably, it is located between the first end of the second shaft and the second end of the second shaft

- 3 EN 308755 B6 area with increased diameter of the second shaft. This area with an increased diameter of the second shaft has a smaller diameter than the area with an increased inner diameter of the second housing. The area with the increased diameter of the second shaft ensures a more even distribution of the force acting from the second resilient element on the second shaft.

The shaped element of the first end of the first housing comprises replaceable protruding pins or pins, thus ensuring compatibility with various adjustable elements. The shaped element of the first end of the first shaft comprises any of a group of cross, flat, torx or hex points. The shaped element of the first end of the first shaft allows the transmission of torque from the first shaft to the screw. The shaped element of the second end of the first shaft comprises any of a group of cross, flat, torx or hex points or n-edges. The shaped element of the first end of the second shaft comprises any of a group of cross, flat, torx or hex points or n-edges. The shape element of the first end of the second shaft and the shape element of the second end of the first shaft are compatible and serve to transmit torque from the second shaft to the first shaft. The shaped element of the second end of the second shaft comprises n-edges and ensures the transmission of torque from the tightening tool to the second shaft. Preferably, the first resilient element and the second resilient element are a compression spring.

Explanation of drawings

The essence of the invention is further elucidated on the basis of examples of its embodiment, which are described with the aid of the accompanying drawings, where:

Fig. 1 - shows a universal device for selective tightening of an adjustable element and a screw;

Fig. 2 shows the individual components of a universal device for the selective tightening of an adjustable element and a screw;

Fig. 3 shows a detailed view of the shaft;

Fig. 4 shows a universal device for selectively tightening an adjustable element and a screw in section in a first position of the shaft;

Fig. 5 shows a universal device for selectively tightening an adjustable element and a screw in section in a second position of the shaft;

Fig. 6 shows a section in the first position of the shaft in a plane perpendicular to the axis of the shaft in the region with an increased diameter of the shaft with the projecting shaft elements;

Fig. 7 - shows a view of the other end of the shaft in the first position of the cover;

Fig. 8 - shows a view of the other end of the shaft in the second position of the cover;

Fig. 9 - shows a screw in an adjustable element;

Fig. 10 shows a second embodiment of a universal device for selectively tightening an adjustable element and a screw;

Fig. 11 shows the individual components of a second embodiment of a universal device for selectively tightening an adjustable element and a screw;

Fig. 12 - shows the individual components of the second embodiment of the universal device for the selective tightening of the adjustable element and the screw in section;

Fig. 13 - shows a detailed view of the second housing and the second shaft of the second embodiment of the universal device for the selective tightening of the adjustable element and the screw;

Fig. 14 shows a second embodiment of a universal device for selectively tightening an adjustable element and a screw in section in a first position of a second shaft;

Fig. 15 shows a second embodiment of a universal device for selectively tightening an adjustable element and a screw in section in a second position of the second shaft;

Fig. 16 shows a section in a first position of the second shaft of a second embodiment of a universal device for selectively tightening an adjustable element and a screw in a plane perpendicular to the axis of the second shaft in the region of increased diameter of the second shaft with protruding elements of the second shaft

Examples of embodiments of the invention

The invention will be further elucidated on the basis of exemplary embodiments with reference to the respective drawings. One exemplary embodiment is a universal device 1 for selectively tightening an adjustable element 16 and a screw 17 shown in FIG. 1. FIG. 2 shows the individual components.

The shaft 2, which is shown separately in Fig. 3, comprises a first end 6 of the shaft 2, which is adapted to transmit torque to the screw 17 shown in Fig. 9. In an exemplary embodiment, the first end 6 of the shaft 2 is provided with a tip of the type torx. The groove of the screw 17 is compatible with the first end 6 of the shaft 2. In alternative embodiments, the first end 6 of the shaft 2 is provided with a shaped element of any shape which allows a positive connection with the screw 17. The first end 6 of the shaft 2 can thus be provided with a cross, flat, hex or another tip. The shaft 2 further comprises a second end 7 of the shaft 2, which is adapted to receive a tightening tool. In the exemplary embodiment, the second end 7 of the shaft 2 has the shape of a hexagon. In other embodiments of the second end 7 of the shaft 2, the second end 7 of the shaft 2 has any other shape which guarantees a form connection with the tightening tool. The tightening tool is a torque screwdriver, drill, torque wrench, conventional wrench or other device for transmitting torque to the shaft 2 via the other end 7 of the shaft 2. The shaft 2 further comprises an area 8 with increased shaft diameter 2. On the surface of this area 8 with increased diameter of the shaft 2 in the exemplary embodiment there are five protruding elements 9 of the shaft 2. In the exemplary embodiment, the protruding elements 9 of the shaft 2 are grooves which serve for a form-fit connection. Between the projecting elements 9 of the shaft 2 and the second end 7 of the shaft 2, there are five stop elements 13 of the shaft 2. Also the stop elements 13 of the shaft 2 are grooves in an exemplary embodiment. Alternatively, the projecting elements 9 of the shaft 2 are designed as springs. The stop elements 13 of the shaft 2 are positioned in the axis of the shaft 2 in such a way that they partially overlap with the projecting elements 9 of the shaft 2.

The housing 3 comprises a first end 10 of the housing 3, which is adapted to transmit torque to the adjustable element 16 shown in Fig. 9. In an exemplary embodiment, the shaped element of the first end 10 of the housing 3 comprises four pins which are compatible with holes in the adjustable element. 16. In alternative embodiments, the shaped element of the first end 10 of the housing 3 comprises arbitrary ends which allow torque to be transmitted from the housing 3 to the adjustable element 16. The housing 3 further comprises a region 11 with increased inner diameter of the housing 3 whose length in the axis of the housing 3 is greater than the length of the projecting elements 9 of the shaft 2. On the outside of the housing 3 there is a groove for the cover 4. On the other side of the housing 3, behind the area 11 with increased inner diameter of the housing 3, there are inner grooves 12 of the housing 3. In the exemplary embodiment as the number of protruding elements 9 of the shaft 2. Their size is larger than the size of the protruding elements 9 of the shaft 2.

The cover 4 comprises an opening 14 in the cover 4, which has a larger radius than the area 8 with increased shaft diameter 2 and at the same time less than the largest distance of the protruding element 9 of the shaft 2 from the shaft axis 2. This opening 14 in the cover 4 comprises cutouts 15 which have similar shape as stop elements 13

- 5 CZ 308755 B6 shafts 2.

Next, the assembly of the universal device 1 for selectively tightening the adjustable element 16 and the screw 17 is described. In the area 11 with the increased inner diameter of the housing 3 there is a resilient element 5. The shaft 2 is mounted in the inner part of the resilient element 5, as shown in Fig. 4. In an exemplary embodiment, the resilient element 5 is a compression spring, which is preloaded in the region 11 with an increased inner diameter of the housing 3. Fig. 6 shows a section of an area 8 with an increased diameter of the shaft 2, on which the protruding elements 9 of the shaft 2 are located. It is clear that in order to accommodate the shaft 2 in the housing 3, the protruding elements 9 of the shaft 2 must be inserted into the inner grooves 12 of the housing 3. Subsequently, a cover 4 is attached to the housing 3, which comprises cutouts 15 in the form of stop elements 13 of the shaft 2 around the circumference of the hole 14 in the cover 4. To slide the cover 4 onto the housing 3, the cover 4 is rotated in the shaft axis 2 as shown. shown in Fig. 7. The stop elements 13 of the shaft 2 overlap with the cutouts 15 in the hole 14 in the cover 4. The cover 4 is subsequently secured against sliding out by abutting the end of the cover 4 into a groove on the outside of the housing 3.

Next, the function of the universal device 1 for selectively tightening the adjustable element 16 and the screw 17, which is located concentrically in the adjustable element 16, is described. The universal device 1 for selectively tightening the adjustable element 16 and the screw 17 is slid by the first end 10 of the housing 3 into holes in the adjustable element. 16. The principle of selective tightening consists in the axial displacement of the shaft 2 between the first and the second position.

The first position of the shaft 2 is shown in Fig. 4. The protruding elements 9 of the shaft 2 are inserted in the inner grooves 12 of the housing 3, as shown in Fig. 6. The resilient element 5 pushes the shaft 2 away from the first end 10 of the housing 3. tools to the other end 7 of the shaft 2 and applying torque to the shaft 2, the torque is transmitted from the shaft 2 to the housing 3 via the protruding elements 9 of the shaft 2 and the inner groove 12 of the housing 3. The torque is further transmitted to the adjustable element 16 via the first end 10. The torque is not transmitted to the screw 17, and thus in the first position of the shaft 2, the adjustable element 16 is tightened.

The second position of the shaft 2 is shown in Fig. 5. The second position is brought into the second position by axial pushing towards the first end 10 of the housing 3. The pushing is done manually with a tightening tool and must overcome the applied load from the resilient element 5. the first end 6 of the shaft 2 abuts into a groove in the screw 17. The protruding elements 9 of the shaft 2 are located in the region 11 with the increased inner diameter of the housing 3. The protruding elements 9 of the shaft 2 therefore do not transmit torque to the housing 3 in the second position of the shaft 2. of the tool acting on the second end 7 of the shaft 2 is thus directly transferred to the screw 17, and thus in the second position of the shaft 2 the screw 17 is tightened.

By changing the position of the shaft 2, the torque can be transmitted to the adjustable element 16 or to the screw 17 as required.

The cover 4, which is located on the outside of the housing 3, serves as protection against the extension of the shaft 2. The cover 4 can also be rotated in the axis of the housing 3 and according to the angular rotation of the cover 4 relative to the shaft 2, the cover 4 can be in two main positions. According to the angular rotation of the cover 4 relative to the shaft 2, the position of the cutouts 15 in the hole 14 of the cover 4 relative to the stop elements 13 of the shaft 2 can be changed. When tightening the adjustable element 16, i.e. when the shaft 2 is in the first position, the cover can be rotated as is shown in Fig. 8. The stop element 13 of the shaft 2 does not overlap with the cutouts 15 in the hole 14 in the cover 4. In this position of the cover 4, axial displacement of the shaft 2 towards the first end 10 of the housing 3 is prevented even if the shaft 2 exerts a load. This makes it possible to apply a support force to the shaft 2 without moving the shaft 2 to the second position. To move the shaft 2 to the second position, it is necessary to rotate the cover 4 as shown in Fig. 7. The stop elements 13 of the shaft 2 overlap with the cutouts 15, thus allowing axial movement of the shaft 2 towards the first end 10 of the housing 3.

Second exemplary embodiment of a universal device 1 for selectively tightening an adjustable element

-6GB 308755 B6 and the screw 17 is shown in Fig. 10. Fig. 11 shows the individual components.

The first shaft 19 includes a first end 26 of a first shaft 19 that is adapted to transmit torque to a screw 17, which is shown in Fig. 9. In an exemplary embodiment, the shaped member of the first end 26 of the first shaft 19 includes a torx tip. The groove of the screw 17 is compatible with the first end 26 of the first shaft 19. In alternative embodiments, the shape element of the first end 26 of the first shaft 19 is of any shape that allows a form fit with the screw 17. Thus, the shape element of the first end 26 of the first shaft 19 may comprise a cross , hex or other tip. The first shaft 19 further includes a second end 27 of the first shaft 19 that is adapted to transmit torque from the second shaft 20. In an exemplary embodiment, the second end 27 of the first shaft 19 includes a hexagonal recess. In other embodiments, the second end 27 of the first shaft 19 has any other shape that provides torque transmission from the second shaft 20. The first shaft 19 further includes a region 28 with an increased diameter of the first shaft 19.

The second shaft 20, which is shown in more detail in Fig. 13, comprises a first end 32 of the second shaft 20, which is adapted to transmit torque to the first shaft 19 via the second end 27 of the first shaft 19, and thus has a hexagonal shape. The second shaft 20 further includes a second end 33 of the second shaft 20 that is adapted to receive the tightening tool. In the exemplary embodiment, the second end 33 of the second shaft 20 has a hexagonal shape. In other embodiments, it has any other shape that provides a form fit with a tightening tool, which is, as in the first exemplary embodiment, a torque screwdriver, drill, or other device for generating and transmitting torque. The second shaft 20 further includes a region 34 with an increased diameter of the second shaft 20. On the surface of this region 34 with an increased diameter of the second shaft 20, in an exemplary embodiment, there are four projecting elements 35 of the shaft 20.

The first housing 21 comprises a first end 29 of a first housing 21 which is adapted to transmit torque to the adjustable element 16 shown in Fig. 9. In an exemplary embodiment, the first end 29 of the first housing 21 is formed by four pins which are compatible with holes in the adjustable element. 16. In alternative embodiments, the first end 29 of the first housing 21 is formed by any end that allows torque to be transmitted from the first housing 21 to the adjustable element 16. The first housing 21 further includes a region 31 with increased inner diameter of the first housing 21 whose length in the axis of the first housing. housing 21 is greater than the length of the region 28 with increased diameter of the first shaft 19. The first housing 21 further includes a second end 30 of the first housing 21 that is adapted for fixed connection to the first end 36 of the second housing 22. In an exemplary embodiment, the second end 30 of the first housing 21 made as a flange.

The second housing 22, which is shown in more detail in FIG. 13, comprises a first end 36 of the second housing 22, which is designed as a flange. The second housing 22 further includes an area 37 with an increased inner diameter of the second housing 22, the length of which in the axis of the second housing 22 is greater than the length of the protruding elements 35 of the second shaft 20. The second housing 22 further includes an inner groove 38 of the second housing 22. the inner grooves 38 of the second housing 22 are the same as the number of protruding elements 35 of the second shaft 20. Their size is larger than the size of the protruding elements 35 of the second shaft 20. A groove for the cover 25 is provided on the outside of the second housing 22.

Next, the assembly of the universal device 1 for selectively tightening the adjustable element 16 and the screw 17 is described. In the area 31 with the increased inner diameter of the first housing 21 there is a first resilient element 23. The first shaft 19 is mounted in the inner part of the first resilient element 23, as shown in FIG. 14. In an exemplary embodiment, the first resilient element 23 is a compression spring which is prestressed in the region 31 with an increased inner diameter of the first housing 21. In the region 37 with the increased inner diameter of the second housing 22 there is a second resilient element 24. The second shaft 20 is inserted in the second housing 22 such that in the region 37 with the increased inner diameter of the second housing 22 it is located in the inner part of the second resilient element 24. it is also apparent from Fig. 14. To insert the second shaft 20 into the second housing 22, the second shaft 20 must be

- 7 CZ 308755 B6 axially rotated relative to the second housing 22 as shown in Fig. 16. This arrangement allows the protruding elements 35 of the second shaft 20 to enter the inner grooves 38 of the second housing 22. The second resilient element 24 is also a spring in an exemplary embodiment. . The first housing 21 and the second housing 22 are connected by flanges located at the second end 30 of the first housing 21 and the first end 32 of the second housing 22. In the exemplary embodiment, the connection is made by six screws, alternatively the first housing 21 and the second housing 22 are connected. welding. The first housing 21 and the second housing 22 are connected coaxially so that the first end 32 of the second shaft 20 is only partially located in the second end 27 of the first shaft 19, and torque transmission from the second shaft 20 to the first shaft 19 is not allowed. after the connection of the first housing 21 and the second housing 22, the second shaft 20 is located outside the first shaft 19. Finally, a cover 25 is placed on the second housing 22. The first resilient element 23 acts on the region 28 with increased diameter of the first shaft 19 towards the second end 30 of the first shaft. The first shaft 19 is secured against ejection from the first housing 21 by the first end 36 of the second housing 22. The second resilient element 24 acts on the region 34 with increased diameter of the second shaft 20 away from the first end 36 of the second housing 22. The second shaft 20 is anti-ejection. from the second housing 22 secured by a cover 25.

Next, the function of the universal device 1 for selectively tightening the adjustable element 16 and the screw 17, which is located concentrically in the adjustable element 16, is described. 16. The principle of selective tightening consists in axially displacing the second shaft 20 between the first and second positions.

The first position of the second shaft 20 is shown in Fig. 14. The protruding elements 35 of the second shaft 20 are located in the inner grooves 38 of the second housing 22. As shown in Fig. 16. After connecting the tightening tool to the second end 33 of the second shaft 20, the torque is transmitted from the tightening tool to the second shaft 20 via a hexagon at the second end 33 of the second shaft 20. Furthermore, the torque is transmitted to the second housing 22 via the projecting elements 35 of the second shaft 20 and the inner groove 38 of the second housing 22. Via the screw connection between the second housing 22 and the first housing 21 transmits the torque to the first housing 21 up to the adjustable element 16 via the first end 29 of the first housing 21. No torque is transmitted to the screw 17, and thus the adjustable element 16 is tightened in the first position of the second shaft 20.

The second position of the second shaft 20 is shown in Fig. 15. The second shaft 20 is introduced into the second position by axial pushing towards the first end 36 of the second housing 22. After axially pushing the second shaft 20 a distance greater than it was between the hexagon of the second shaft 20 and the hexagon of the first. shaft 19 in the first position of the second shaft 20, the first end 32 of the second shaft 20 abuts the second end 27 of the first shaft 19, thereby allowing torque to be transmitted from the second shaft 20 to the first shaft 19. Axially pushing the second shaft 20 and then pushing the first shaft 19 toward the first end 29 of the first shaft 21 abuts against the first end 29 of the first shaft 19 in the groove of the screw 17. By applying a torque with a tightening tool which is still connected to the second end 33 of the second shaft 20, the torque is transmitted from the second shaft 20 to the first shaft. 19 via the first end 32 of the second shaft 20 and the second end 27 of the first shaft 19. Further, the torque is transmitted from the first end 26 of the first shaft 19. It can be seen from Fig. 15 that the protruding elements 35 of the second shaft 20 are located in the region 37 with the increased inner diameter of the second housing 22, and thus no torque is transmitted between the second shaft 20. and a second housing 22 via the protruding elements 35 of the second shaft 20 and the inner groove 38 of the second housing 22. In the second position of the second shaft 20, the screw 17 is tightened.

By changing the position of the second shaft 20, the torque can be transmitted to the adjustable element 16 or to the screw 17 as required.

-8EN 308755 B6

Industrial applicability

The above-described universal device for the selective tightening of the adjustable element and the screw can be used mainly for assembling lamps in automobiles, where it is necessary to handle the adjustable element and the screw separately. The solution significantly reduces construction time and allows the lamp to be assembled with a single tool.

-9EN 308755 B6

Claims (17)

Universal device (1) for selectively tightening an adjustable element (16) and a screw (17), the screw (17) being arranged concentrically in the inner part of the adjustable element (16), characterized in that it comprises a shaft (2), a housing (3), a cover (4) and a resilient element (5), the shaft (2) comprising a first end (6) of the shaft (2) with a shaped element adapted to transmit torque to the screw (17), further comprising a second end ( 7) a shaft (2) comprising a shaped element adapted to receive a tightening tool, wherein between the first end (6) of the shaft (2) and the second end (7) of the shaft (2) comprises at least one protruding element (9) of the shaft (2) from the axis, the housing (3) comprising a through hole, a first end (10) of the housing (3) with a shaped element adapted to transmit torque to the adjustable element (16), an area (11) with an increased inner diameter of the housing (3) and an inner a groove (12) of the housing (3), the cover (4) comprising an opening (14) in the cover (4) with a radius of less than the distance of the projecting element (9) of the shaft (2) from the axis of the shaft (2) and at the same time greater than the radius of the shaft (2), the shaft (2) being coaxially placed in the housing (3) so that the first end (6) of the shaft (2) ) is located near the first end (10) of the housing (3) and in the region (11) with the increased inner diameter of the housing (3) there is a resilient element (5), the axial length of the region (11) with the increased inner diameter of the housing (3) is greater than the length of the protruding element (9) of the shaft (2) and the radius of the area (11) with increased inner diameter of the housing (3) is greater than the distance of the protruding element (9) of the shaft (2) from the axis, the cover (4) being located on the housing (3) on the opposite side to the first end (10) of the housing (3), the second end (7) of the shaft (2) projecting out of the cover (4) through an opening (14) in the cover (4), the shaft (2) ) is positionable between the first and second positions, wherein in the first position of the shaft (2) the projecting element (9) of the shaft (2) is located in the inner groove (12) of the housing (3) and in the second position of the shaft (2) the connecting element (9) of the shaft (2) is located in an area (11) with an increased inner diameter of the housing (3). Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to claim 1, characterized in that the shaft (2) comprises a shaft (2) and a second end (7) between the projecting elements (9) shaft (2) stop elements (13), the cover (4) comprising around the circumference of the opening (14) of the cover (4) cutouts (15) which are geometrically corresponding to the stop elements (13), the cover (4) being on the housing ( 3) rotatably movable in the axis of the housing (3), wherein in the first position of the cover (4) the stop element (13) of the shaft (2) overlaps with the cutouts (15) when viewed in the axis of the housing (3) and in the second position of the cover (4) ), the stop element (13) of the shaft (2) does not overlap with the cutouts (15) when viewed in the axis of the housing (3). Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to any one of the preceding claims, characterized in that the protruding shaft element (9) is a tongue or shaft groove, the connection between the protruding elements (9). ) of the shaft (2) and the inner groove (12) of the housing (3) is performed by inserting these protruding elements (9) of the shaft (2) into the corresponding inner groove (12) in the housing (3). Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to any one of the preceding claims, characterized in that between the first end (6) of the shaft (2) and the second end (7) of the shaft (2) ) there is an area (8) with an increased diameter of the shaft (2), this area (8) with an increased diameter of the shaft (2) having a smaller diameter than an area (11) with an increased inner diameter of the housing (3). Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to any one of the preceding claims, characterized in that the shaped element of the first end (10) of the housing (3) comprises replaceable protruding pins. Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to any one of the preceding claims, characterized in that the shaped element of the first end (6) of the shaft (2) is any of a group of cross, flat, torx or hex points. - 10 CZ 308755 B6 Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to any one of the preceding claims, characterized in that the shaped element of the second end (7) of the shaft (2) is n-edged. Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to any one of the preceding claims, characterized in that the resilient element (5) is a compression spring. A universal device (1) for selectively tightening an adjustable element (16) and a screw (17), the screw (17) being arranged concentrically in the inner part of the adjustable element (16), characterized in that it comprises a first shaft (19), a second shaft (20), a first housing (21), a second housing (22), a first resilient element (23), a second resilient element (24) and a cover (25), the first shaft (19) comprising a first end (26) of the first a shaft (19) with a shape element adapted to transmit torque to the screw (17), further comprising a second end (27) of the first shaft (19), which includes a shape element adapted to receive the second shaft (20), between the first end ( 26) of the first shaft (19) and the second end (27) of the first shaft (19) comprises a region (28) with an increased diameter of the first shaft (19), the first housing (21) comprising a through hole and further comprising a first end (29) of the first shaft; housings (21) with a shaped element adapted to transmit torque to the adjustable element (16) and the type an end (30) of the first housing (21) comprising a flange, the second end (30) of the first housing (21) comprising a region (31) with an increased inner diameter of the first housing (21), the second shaft (20) comprising a first end (32) a second shaft (20) with a shape element adapted to transmit torque to the first shaft (19) and further comprising a second end (33) of the second shaft (20) that includes a shape element adapted to receive a tightening tool, further between the first the end (32) of the second shaft (20) and the second end (30) of the second shaft (20) comprise at least one protruding element (35) of the second shaft (20) from the axis of the second shaft (20), the second housing (22) comprising a through hole and further comprising a first end (36) of the second housing (22) adapted to engage the second end (30) of the first housing (21), a region (37) with an increased inner diameter of the second housing (22) and an inner groove (38) of the second housing ( 22), wherein the cover (25) comprises an opening with a radius smaller than the largest greater distance of the projecting element (35) of the second shaft (20) from the axis of the second shaft (20) and at the same time greater than the radius of the second shaft (20), the first shaft (19) being coaxially located in the first housing (21) such that the first end (26) the first shaft (19) is located near the first end (29) of the first housing (21) and the area (28) with the increased diameter of the first shaft (19) is located in the area (31) with the increased inner diameter of the first housing (21). ) and in the region (31) with the increased inner diameter of the first housing (21) there is a first resilient element (23), the second shaft (20) being coaxially located in the second housing (22) such that the first end (32) of the second shaft ( 20) is located near the first end (36) of the second housing (22) and between the increase in the inner diameter of the second housing (22) and the increase in diameter of the second shaft (20) is a second resilient element (24), the cover (25) being located on a second housing (22) on the opposite side to the first end (36) of the second housing (22), the second end (33) of the second shaft ele (20) protrudes through the opening in the housing (25) out of the housing (25), the second shaft (20) and the first shaft (19) being axially displaceable, the protruding element (35) being located in the first position of the second shaft (20) of the second shaft (20) in the inner groove (38) of the second housing (22) and in the second position of the second shaft (20), the projecting element (35) of the second shaft (20) is located in the region (37) with increased inner diameter of the second housing (22). ). Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to claim 9, characterized in that the protruding element (35) of the second shaft (20) is a tongue or shaft groove, the connection between the protruding elements (35) of the second shaft (20) and the inner groove (38) of the second housing (22) is realized by inserting these protruding elements (35) of the shaft (20) into a corresponding inner groove (38) in the second housing (22). Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to claims 9 and 10, characterized in that between the first end (32) of the second shaft (20) and The second end (33) of the second shaft (20) has an area (34) with an increased diameter of the second shaft (20), this area (34) with an increased diameter of the second shaft (20) having a smaller diameter than the area ( 37) with an increased inner diameter of the second housing (22). Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to claims 9 to 11, characterized in that the shaped element of the first end (29) of the first housing (21) are replaceable protruding pins or pins. Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to claims 9 to 12, characterized in that the shaped element of the first end (26) of the first shaft (19) is any of a group of cross, flat , torx or hex points. Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to claims 9 to 13, characterized in that the shaped element of the second end (27) of the first shaft (19) is any of a group of cross, flat , torx or hex points or n-edges. Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to claims 9 to 14, characterized in that the shaped element of the first end (32) of the second shaft (20) is any of a group of cross, flat , torx or hex points or n-edges. Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to claims 9 to 15, characterized in that the shaped element of the second end (33) of the second shaft (20) is n-edged. Universal device (1) for selectively tightening an adjustable element (16) and a screw (17) according to claims 9 to 16, characterized in that the first spring element (23) and the second spring element (24) are compression springs.