DE102019128027A1 - Quick release device - Google Patents

Abstract

Quick-release clamping device with the following features: - a nut (20) with a bore (30), - the bore (30) has a threaded bore (40) with two partial internal threads (42, 44) along a longitudinal thread axis (46) and a displacement bore (50) with a displacement bore diameter (52) along a displacement axis (54), - the thread longitudinal axis (46) and the displacement axis (54) overlap in such a way that the thread longitudinal axis (46) and the displacement axis (54) span an angle of intersection (32), - a screw (60) with a screw head (70) and a shaft (80) which is arranged along a screw longitudinal axis (62) and has an external thread (82) with an external thread diameter (84) that matches the partial internal threads (42, 44), - the The displacement bore diameter (52) is larger than the external thread diameter (84), so that the screw (60) can be pushed into the bore (30) along the displacement axis (54) and by tilting the screw (60) and / or the nut ( 20) the external thread (82) can be arranged in the partial internal threads (42, 44), - the nut (20) and the screw (60) are on their mutually facing contact surfaces (24, 72) with contours (22, 22, 74) provided.

Description

The invention relates to a quick release device.

A wide variety of different types of clamping devices are available for frictional and / or positive connection of several components. A type of clamping device that is very frequently used is the screw connection.

The time it takes to assemble a screw connection depends largely on the length of the thread to be screwed in. To speed up and simplify the assembly process with large thread lengths, so-called quick-release nuts are from the DE 20 2005 005 501 U1 known. Such quick release nuts can be pushed onto the thread by tilting the nut against the screw. The nut is tilted back by supporting it on the screw head, for example. By tilting back, the threads of the nut and the screw interlock and the screw connection engages.

As a further state of the art, the DE 198 25 132 A1 , the DE 20 2018 107 067 U1 as well as the DE 93 16 867 U1 called.

The disadvantage of such quick release nuts is that transverse forces acting on the nut can only be absorbed inadequately, which can lead to unintentional tilting or displacement of the nut on the screw, especially during the assembly process. Among other things, this results in increased wear on the threads on the nut and screw. In addition, the nut tilts continuously during the assembly process by supporting it on the screw head. The same applies to the dismantling process accordingly. The user cannot clearly see at which point the threads of the nut and the screw already interlock to such an extent that the screw connection is securely gripped.

The invention is therefore based on the object of providing a safe and durable quick release device which can reliably absorb transverse forces acting on the nut. In addition, the quick release device should be easy to manufacture.

The object is achieved according to the invention by a quick release device with the features of claim 1.

Advantageous refinements and developments of the invention are specified in the dependent claims.

A quick release device according to the invention has a nut with a bore. The bore has a threaded bore with two partial internal threads along a thread longitudinal axis and a displacement bore with a displacement bore diameter along a displacement axis. The thread longitudinal axis and the displacement axis overlap in such a way that the thread longitudinal axis and the displacement axis span an angle of intersection. A quick release device according to the invention also has a screw with a screw head and a shaft which is arranged along a screw longitudinal axis and which has an external thread with an external thread diameter that matches the partial internal threads. The displacement bore diameter is larger than the external thread diameter, so that the screw can be pushed into the bore along the displacement axis and the external thread can be arranged in the partial internal threads by tilting the screw and / or the nut. The nut and the screw of a quick release device according to the invention are provided on their mutually facing contact surfaces with a rotatable contour that can be plugged into one another.

The hole can be produced by making the threaded hole in the nut. Then the shifting hole can be drilled into the nut. The displacement bore preferably has no thread and a larger diameter than the threaded bore or the external thread. The displacement bore particularly preferably has a smooth surface. As a result, the shaft of the screw can easily be pushed into the sliding hole. The threaded bore and the displacement bore are preferably arranged in the nut in such a way that the point of intersection of the thread longitudinal axis with the displacement axis lies within the volume enclosed by the bore. In the contact surface of the nut, the bore can therefore have a bore opening with an oval cross-section. From the initially connected internal thread of the threaded hole, two partial internal threads can thus arise. The two partial internal threads are preferably not formed contiguously and are arranged diagonally opposite one another in the bore.

The bore preferably has at least one connection bore with a connection bore diameter. The at least one connection bore can be arranged following at least one of the two partial internal threads along the longitudinal axis of the thread. The connection bore diameter is particularly preferably designed to be larger than or equal to the external thread diameter. The connection bore can be designed with or without an internal thread.

The screw can be inserted into the bore with the shaft. The longitudinal axis of the screw preferably lies on the displacement axis. The thread longitudinal axis is preferably arranged perpendicular to the contact surface of the nut and the screw longitudinal axis perpendicular to the contact surface of the screw, so that when the screw longitudinal axis and the displacement axis lie on top of one another, the nut and screw are tilted relative to one another by the angle of intersection. By tilting in the opposite direction by the cutting angle, the longitudinal axis of the screw can be arranged on the longitudinal axis of the thread. Due to the mutual inclination of screw and nut, this tilting usually begins when the mutually facing contact surfaces of screw and nut meet at least partially. With increasing tilting of the screw longitudinal axis on the thread longitudinal axis, the external thread of the screw can be arranged in the two partial internal threads. As soon as the screw longitudinal axis and the thread longitudinal axes lie on top of one another, the external thread can be arranged completely in the partial internal threads. The thread can grip and the quick release device can be tightened by screwing the screw into the nut.

The longitudinal axis of the screw and the longitudinal axis of the thread preferably lie on top of one another when the contours are at least partially inserted into one another on the mutually facing contact surfaces of the nut and screw. The parts of the surface of the screw and nut that are in direct contact with one another when the quick release device is fully screwed in, with the exception of the external thread and the partial internal thread, are referred to as contact surfaces. In a simple embodiment, for example, one contour can have a pin-shaped element and the other contour can have an annular recess. In another exemplary embodiment, one contour can be designed as a polygon, for example as a hexagon, and the other contour can have a cylindrical or circular recess. This can be the case, for example, if the nut is designed as a hexagon nut or the screw head has an external hexagon. The screw can also be formed by attaching a second nut to a threaded pin. In this case, the second nut can take over the functions of the screw head.

The contours are preferably designed in such a way that the external thread and the partial internal thread are already arranged in one another before the quick-release clamping device is clamped. This means that the functions of “arranging the external thread and the partial internal thread within one another” and “clamping” can be structurally separated. In this way, the stress and thus also the wear of the thread can be reduced compared to the quick release devices known from the prior art. Due to the contours that can be plugged into one another, transverse forces in particular can be absorbed, especially when clamping and releasing the quick-release clamping device. In addition, a quick release device according to the invention can be particularly safe, since when the quick release device is not clamped but the contour is plugged into one another, the external thread is arranged in the partial internal threads and the screw cannot tilt into the sliding bore. Inadvertent separation of screw and nut can thus be avoided. A loss protection can thus be implemented by interlocking contours. Because the contours of the nut and screw can be rotated one inside the other, the nut and screw can be rotated against one another even when the contours are plugged into one another. The quick release device can thus preferably be tightened and released when the contours are plugged into one another, while the screw and nut are particularly preferably secured against loss.

The contour on the screw side is preferably arranged on the screw head and can therefore be referred to as a screw head contour. Accordingly, the nut-side contour can be referred to as the nut contour. The screw head contour is preferably arranged on a screw head-side contact surface facing the nut, and the nut contour is preferably arranged on a nut-side contact surface facing the screw head. The screw head contour and the nut contour are particularly preferably designed to be complementary to one another. The nut contour can be designed as a negative image of the screw head contour and vice versa. Due to the complementary design of the nut contour and screw head contour, transverse forces that act at least partially perpendicular to the longitudinal axis of the thread on the nut or screw can usually be transferred particularly well to the other part of the quick release device. In addition, the mutually complementary contours of the screw head and nut can support the tilting of the nut and screw when the quick release device is assembled. In particular, due to the complementary design of the screw head contour and the nut contour, good guidance properties can be achieved when the screw and nut are joined together.

Particularly preferably, the screw head contour and / or the nut contour are designed to be rotationally symmetrical to the longitudinal axis of the screw or to the longitudinal axis of the thread. When screwing in and clamping the quick release device, the partial internal threads and the External threads are preferably arranged one inside the other. With a rotationally symmetrical design of the screw head contour and / or the nut contour, a high level of stability can therefore be achieved, in particular when screwing in and tightening the quick-release clamping device. In addition, after the screw and nut have been pushed into one another along the displacement axis, the screwing-in movement is often already started during the tilting process. In this case, the tilting can be supported by the rotationally symmetrical design of the screw head contour and / or the nut contour.

In one embodiment of the invention, the screw head contour and / or the nut contour have at least one recess and / or at least one projection. A recess is preferably a depression in the surface, in particular in one of the contact surfaces. A projection can be formed by a correspondingly opposing design of the surface. The at least one recess can also be formed in that part of a surface is surrounded by at least one projection. Accordingly, the at least one projection can also be formed in that part of a surface is surrounded by at least one recess.

Particularly preferably, the at least one recess and / or the at least one projection are cylindrical, ring-shaped or conical. A conical design includes, in particular, a frustoconical design of the at least one recess and / or the at least one projection. Due to the conical shape of the at least one recess and / or the at least one projection, the mutual centering of the screw and the nut can be supported when they are pushed into one another and when they are tensioned. The tilting of the longitudinal axis of the screw and the longitudinal axis of the thread can also be facilitated by such an arrangement. The at least one recess and / or the at least one projection preferably have a bevel. In this way, centering and / or tilting can be further facilitated. Cylindrical, annular and conical embodiments of the at least one recess and / or of the at least one projection can be combined with one another.

In a further development of the invention, the bore is designed as a blind hole. The bore, in particular the threaded bore, is designed to be longer than the shaft. The quick release device can be clamped clearly and safely by screwing the external thread into the partial internal thread. In particular, a double fit between screw and nut can be avoided in this way. The displacement bore can be made shorter than the shaft and have a rounding at its rear end. The rounding can guide the shaft at the end of the insertion process and thus support the tilting of the longitudinal axis of the screw and the longitudinal axis of the thread. The rear end preferably designates the end of the displacement bore that is further away from the screw-side contact surface. Accordingly, the partial internal threads can be referred to as the rear partial internal thread and the front partial internal thread. The at least one connection bore is preferably arranged following the rear partial internal thread.

A stabilizer according to the invention for archery has at least one quick release device. Such stabilizers are arranged on a sports bow, in particular to stabilize the position of the bow in the hand. The quick release device is preferably used to place the stabilizer on the sports bow. The screw is particularly preferably arranged on the stabilizer, while the sports bow has the corresponding nut. The sports arch can have an arch interface at which the stabilizer is arranged. Usually one or more stabilizers are arranged on a sports bow. In particular, three stabilizers, namely a monostabilizer and two side stabilizers, can be arranged on a sports arch. In addition, a stabilizer can have several stabilizer parts that can be connected to one another with the aid of the at least one quick-release device.

A tripod according to the invention, in particular for cameras or cameras, has at least one quick-release device. The tripod can have at least one leg, wherein the at least one leg can be arranged on the tripod with the at least one quick-release device. The at least one leg can also have several leg parts that can be connected to one another with the aid of the at least one quick-release device. The at least one quick release device is particularly preferably used to connect the stand to an object that can be arranged thereon, in particular a camera or a photographic apparatus.

A billiard cue according to the invention has at least one quick-release device. The billiard cue can have several billiard cue parts which can be connected to one another with the aid of the at least one quick-release device.

• Es zeigt:
  • 1 eine zweidimensionale schematische Darstellung eines Ausführungsbeispiels einer Schnellspannvorrichtung in einem demontierten Zustand,
  • 2 eine dreidimensionale schematische Darstellung des in 1 gezeigten Ausführungsbeispiels in dem in 1 dargestellten Zustand,
  • 3 eine zweidimensionale schematische Darstellung des in 1 gezeigten Ausführungsbeispiels in einem montierten Zustand,
  • 4 eine dreidimensionale schematische Darstellung des in 1 gezeigten Ausführungsbeispiels in dem in 3 dargestellten Zustand,
  • 5 eine schematische Darstellung eines Sportbogens mit Stabilisatoren,
  • 6 eine schematische Darstellung der Seitenstabilisatoren des in 5 gezeigten Ausführungsbeispiels, und
  • 7 eine schematische Schnittansicht einer Schnellspannvorrichtung der in 6 gezeigten Seitenstabilisatoren.

Exemplary embodiments of the inventions are explained using the following figures:

• It shows:
  • 1 a two-dimensional schematic representation of an embodiment of a quick release device in a dismantled state,
  • 2 a three-dimensional schematic representation of the in 1 embodiment shown in the in 1 state shown,
  • 3 a two-dimensional schematic representation of the in 1 shown embodiment in an assembled state,
  • 4th a three-dimensional schematic representation of the in 1 embodiment shown in the in 3 state shown,
  • 5 a schematic representation of a sports bow with stabilizers,
  • 6th a schematic representation of the side stabilizers of the in 5 embodiment shown, and
  • 7th a schematic sectional view of a quick release device in FIG 6th side stabilizers shown.

The 1 to 7th show various views of various exemplary embodiments. For the sake of clarity, not all reference symbols are used in each figure. The same reference numerals are used for identical and functionally identical parts.

1 shows an embodiment of a quick release device 10 with a mother 20th and a screw 60 . In 1 is the quick release device 10 shown in a dismantled state. The mother 20th has a hole 30th on. The hole 30th has a threaded hole 40 on, along a longitudinal axis of the thread 46 is arranged. In addition, the hole 30th a shifting hole 50 with a shift hole diameter 52 on that along a shift axis 54 is arranged. The longitudinal axis of the thread 46 and the shift axis 54 overlap within that of the mother 20th included volume and span an angle of intersection 32 on. This will be in the hole 30th the threaded hole 40 and the shifting hole 50 superimposed so that the threaded hole 40 two partial internal threads, namely a front partial internal thread 42 and a rear partial internal thread 44 , having. Like in particular from 2 shows are the front partial internal thread 42 and the rear partial internal thread 44 not formed coherently. The hole 30th is in the mother 20th designed as a blind hole, so that the bore 30th only one hole opening 34 having. Because the thread's longitudinal axis 46 and the shift axis 54 have an angular offset, is the bore opening 34 oval shaped. In doing so, that of the two partial internal threads is used as the front partial internal thread 42 referred to, which is closer to the bore opening 34 is arranged. Accordingly, this becomes further from the bore opening 34 removed partial internal threads as rear partial internal threads 44 designated. Following the rear partial internal thread 44 is along the longitudinal axis of the thread 46 a connection hole 48 with a connection hole diameter 49 arranged. The connection hole 46 has no internal thread. In particular from 3 it can be seen that the connection bore diameter 49 equal to the external thread diameter 84 is trained.

The screw 60 has one along a screw longitudinal axis 62 arranged shaft 80 and a screw head 70 on. The shaft 80 points to the partial internal threads 42 , 44 matching external thread 82 with an external thread diameter 84 on. Here is the displacement hole diameter 52 larger than the external thread diameter 84 formed so that the shaft 80 simply along the shift axis 54 into the shifting hole 50 is retractable. The longitudinal axis of the screw typically lies during the insertion process 62 and the shift axis 54 on each other. Because the thread's longitudinal axis 46 opposite the shift axis 54 about the cutting angle 32 rotated, are the screw 60 and the mother 20th tilted against each other during the insertion process.

The mother 20th can be along the shift axis 54 preferably over a large part of the external thread 82 on the shaft 80 be postponed. Usually the mother will 20th on the shaft 80 pushed up until a nut-side contact surface 24 and a contact surface on the screw head side 72 at least partially touch each other. The parts of the surface of the screw are used as contact surfaces 60 and the mother 20th denotes that when the quick release device is fully screwed in 10 are in direct contact with each other, with the exception of the external thread 82 and the front partial internal thread 42 as well as the rear partial internal thread 44 .

The mother-side contact surface 24 has a nut contour 22nd on, the screw head-side contact surface 72 has a screw head contour 74 on. The screw head contour 74 and the nut contour 22nd are designed to be plugged into one another and rotatable. In particular from 2 it can be seen that the nut contour 22nd Is cylindrical and the screw head contour 74 a corresponding cylindrical recess 76 having. The nut contour 22nd and the screw head contour 74 are thus designed to be complementary to one another. The cylindrical nut contour 22nd is rotationally symmetrical about the longitudinal axis of the thread 46 , the recess 76 rotationally symmetrical around the Longitudinal screw axis 62 arranged. This results in the nut contour when plugging into one another 22nd and the screw head contour 74 mutual tilting of the screw 60 and the mother 20th causes the screw's longitudinal axis 62 and the longitudinal axis of the thread 46 come to rest on each other. If the screw's longitudinal axis 62 and the shift axis 54 lie on top of one another, thus finds the nut contour when plugging into one another 22nd and the screw head contour 74 a tilting of the mother 20th and the screw 60 in the cutting angle 32 instead of. This tilting at the end of the pushing-in process can be achieved by an at the end of the sliding hole 50 arranged rounding 56 get supported. This is especially the case when the length of the sliding bore 50 and the length of the shaft 80 are exactly matched to each other.

By tilting the external thread 82 the screw 60 and the front partial internal thread 42 as well as the rear partial internal thread 44 the mother arranged one inside the other. The external thread 82 thus grabs in the front partial internal thread 42 and the rear partial internal thread 44 . Another shift of the screw 60 and the mother 20th each other is no longer possible. Due to the rotationally symmetrical and mutually complementary design of the nut contour 22nd and the screw head contour 74 can the mother 20th and the screw 60 screwed into each other and the quick release device 10 be excited with it.

Even before the quick release device 10 is tensioned, the nut contour 22nd and the screw head contour 74 however, they can interlock with the quick release device perpendicular to the longitudinal axis of the thread 46 or the longitudinal axis of the screw 62 acting transverse forces via the nut contour 22nd and the screw head contour 74 be transmitted without the risk of tilting or shifting of the screw and nut with respect to one another.

In particular by a depth 77 the recess 76 can be determined how far the screw 60 and the mother 20th after the end of the insertion process must still be screwed into each other until the nut-side contact surface 24 and the contact surface on the screw head side 72 completely against each other. This state in which the screw 60 and the mother 20th are completely screwed into each other is in the 3 and 4th shown. Starting from this state, the quick release device can be screwed in further 10 be excited.

From the 3 and 4th it can be seen that when the quick release device is fully screwed in 10 the longitudinal axis of the screw 62 and the longitudinal axis of the thread 46 ideally lie on top of each other. The external thread 82 and the front partial internal thread 42 as well as the rear partial internal thread 44 are arranged one inside the other. The screw head contour 74 and the nut contour 22nd are plugged into each other.

Due to the cylindrical design of the recess 76 the screw head contour 74 and the complementary training of the nut contour 22nd can the screw 60 and the mother 20th can be partially screwed apart without shifting and / or tilting the screw 60 and the mother 20th is possible to each other. How far the screw 60 and the mother 20th Can be screwed apart without displacement and / or tilting is possible, can in particular by the depth 77 the recess 76 to be determined.

From the 3 and 4th it can also be seen that the threaded hole 40 longer than the shaft 80 is trained. This enables effective clamping of the quick release device 10 be made possible, especially since such a double fit between screw 60 and mother 20th can be avoided.

5 shows a sports bow 90 with several stabilizers, namely a monostabilizer 94 and two side stabilizers 92 . The monostabilizer 94 and the side stabilizers 92 are via an arc interface 96 on the sports bow 90 arranged.

As in 6th are shown at the arc interface 96 especially the side stabilizers 92 by means of a quick release device 10 arranged. The side stabilizer 92 the screw 60 with the shaft 80 on (see 7th ). The mother 20th is at the arch interface 96 arranged. The screw head 70 is in the side stabilizer 92 integrated. The screw head contour 74 has a cylindrical recess 76 with depth 77 and is complementary to the nut contour 22nd formed, which has a corresponding projection 78 having.

In the in 7th The illustration shown lies on the mother-side contact surface 24 as well as the contact surface on the screw head side 72 to each other. The external thread 82 engages in the front partial internal thread 42 and the rear partial internal thread 44 a. The quick release device 10 is thus fully screwed in. By the interlocking of the projection 78 and the recess 76 can when loosening the quick release device 10 by unscrewing the screw a little 60 and the mother 20th the shaft 80 not in the shifting hole 50 be tilted. The external thread 82 therefore remains in the front partial internal thread 42 and in the rear partial internal thread 44 arranged, making the screw 60 including side stabilizer 92 is secured against loss. When assembling the screw 60 and the mother 20th can tilt the screw 60 and the mother 20th to each other and with the arrangement of the external thread 82 in the front partial internal thread 42 and the rear partial internal thread 44 be supported by having the lead 78 the nut contour 22nd as well as the recess 76 the screw head contour 74 a bevel 26th exhibit. The connection hole 48 has no thread.

List of reference symbols

10

Quick release device

20th

mother

22nd

Nut contour

24

mother-side contact surface

26th

chamfer

30th

drilling

32

Cutting angle

34

Hole opening

40

Threaded hole

42

front partial internal thread

44

rear partial internal thread

46

Thread longitudinal axis

48

Connection hole

49

Connection hole diameter

50

Shifting hole

52

Displacement hole diameter

54

Shift axis

56

Rounding

60

screw

62

Longitudinal screw axis

70

Screw head

72

contact surface on the screw head side

74

Screw head contour

76

Recess

77

depth

78

head Start

80

shaft

82

External thread

84

External thread diameter

90

Sports bow

92

Side stabilizer

94

Monostabilizer

96

Arc interface

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 202005005501 U1 [0003]
• DE 19825132 A1 [0004]
• DE 202018107067 U1 [0004]
• DE 9316867 U1 [0004]

Claims (9)

Quick release device with the following features: - a nut (20) with a bore (30), - the bore (30) has a threaded bore (40) with two partial internal threads (42, 44) along a thread longitudinal axis (46) and a displacement bore (50) with a displacement bore diameter (52) along a displacement axis (54), - the thread longitudinal axis (46) and the displacement axis (54) overlap in such a way that the thread longitudinal axis (46) and the displacement axis (54) span an angle of intersection (32), - A screw (60) with a screw head (70) and a shaft (80) which is arranged along a screw longitudinal axis (62) and has an external thread (82) with an external thread diameter (84) that matches the partial internal threads (42, 44), - The displacement bore diameter (52) is larger than the external thread diameter (84), so that the screw (60) can be pushed into the bore (30) along the displacement axis (54) and by tilting the screw (60) and / or the nut (20 ) the external thread (82) can be arranged in the partial internal threads (42, 44), - The nut (20) and the screw (60) are provided on their mutually facing contact surfaces (24, 72) with rotatable contours (22, 74) that can be plugged into one another. Quick release device according to Claim 1 , characterized in that a screw head contour (74) on a screw head-side contact surface (72) facing the nut (20) and a nut contour (22) on a nut-side contact surface (24) facing the screw head (70) are complementary to one another. Quick release device according to Claim 2 , I can denote that the screw head contour (74) and / or the nut contour (22) are rotationally symmetrical to the screw's longitudinal axis (62) or to the thread's longitudinal axis (46). Quick release device according to one of the Claims 2 or 3 , I mean that the screw head contour (74) and / or the nut contour (22) have at least one recess (76) and / or at least one projection (78). Quick release device according to Claim 4 Because I mean that at least one recess (76) and / or at least one projection (78) is cylindrical, ring-shaped or conical. Quick-release clamping device according to one of the preceding claims, the fact that the bore (30) is designed as a blind hole. Stabilizer for archery with at least one quick release device (10) according to one of the preceding claims. Stand, in particular for cameras or photographic apparatus, with at least one quick-release device (10) according to one of the preceding claims. Billiard cue with at least one quick release device (10) according to one of the preceding claims.

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