snap

Abstract

A snap includes a male member having an insertion tab, a female member, and a resilient member that holds the insertion tab in the female member when the snap is closed. The male member and the female member have a common longitudinal axis when the snap is closed. The female member has a stop against which the male member abuts when displaced in a radial direction by a predetermined amount when the snap is closed. The resilient member has a resilient spring force that counteracts any axial displacement of the male member relative to the female member in an opening direction of the snap when the snap is closed. The resilient member is supported on an outer side by the female member when the snap is closed.

Description

Technical Field

[0001] This utility model relates to a snap fastener, which includes a male part with an insertion protrusion, a female part, and an elastic member. When the snap fastener is closed, the elastic member holds the insertion protrusion in the female part. When the snap fastener is closed, the male part and the female part have a common longitudinal axis. The female part has a stop portion. When the snap fastener is closed, the male part rests on the stop portion after being displaced by a predetermined amount in the radial direction. When the snap fastener is closed, the elastic rebound force of the elastic member counteracts any axial displacement of the male part relative to the female part in the opening direction of the snap fastener. Background Technology

[0002] Snap-on snaps of the type mentioned in the preface exist, such as EP4129111A1. In these snap-on snaps, when the snap is closed, although the resilient member rests radially inward against the insert protrusion, there is a gap between the radially outward resilient member and the relevant periphery of the female part, thus allowing the resilient member to move freely in the radial direction. This mobility leads to misalignment when the snap is opened and closed. Furthermore, when closed, the snap lacks stability in the radial direction. Utility Model Content

[0003] Technical problems to be solved

[0004] In view of the above problems, the purpose of this utility model is to further develop the type of snap mentioned in the preamble in order to reliably prevent misalignment during opening and closing, and to make the snap stable in the radial direction when closed.

[0005] Solution for solving the problem

[0006] According to this utility model, the problem arising from the type of snap mentioned in the preamble is solved by the outer side of the elastic member being supported in the radial direction by the mother member when the snap is closed.

[0007] This support first ensures that the elastic component does not become misaligned when the snap is opened and closed. Furthermore, the radial support provides greater stability to the snap on the outside when closed.

[0008] The geometry of the snap fastener can be configured such that when the snap fastener is closed, the elastic member only generates an elastic rebound force when the snap fastener is open. However, according to the present invention, it is preferably provided that when the snap fastener is closed, the elastic member is configured to preload the male component relative to the female component in the closing direction of the snap fastener. For example, it is preferred to configure the elastic member to preload the male component axially in the closing direction.

[0009] This preloading also helps increase the stability of the snaps when closed.

[0010] According to a preferred embodiment of the present invention, an elastic member is provided having a first region and a second region, the first region being held in the mother member such that the first region cannot be radially displaced, the second region resting against the insertion protrusion when the snap is closed, and the second region being adjustable relative to the first region against elastic rebound force.

[0011] In other words, although the elastic element is adjustable, it uses the first region to hold itself in such a way that its first region cannot be radially displaced, which in turn contributes to the stability of the snap when closed.

[0012] The adjustability of the second region can be achieved in any desired manner. According to the present invention, the second region is planned to be flexible and / or pivotable relative to the first region in the face of elastic rebound force.

[0013] The description "pivotable" specifically refers to the situation visible in the longitudinal cross-sectional view when the snap is open and closed. This is particularly applicable when the first region surrounds the insertion protrusion when the snap is closed.

[0014] According to another preferred embodiment of the present invention, it is planned that when the snap is closed, the second region rests against the surface of the insertion protrusion at an acute angle to the axial direction of the snap. Therefore, an elastic preload can be generated in the closing direction in a particularly simple manner.

[0015] A suitable angle must be selected, taking into account the geometric proportions and the elasticity of the elastic component. The angle should preferably be between 3° and 7°.

[0016] The design of the second region depends on the relevant boundary conditions, particularly the given geometric proportions and the elasticity of the materials used. However, according to the present invention, it is preferred that the second region does not protrude beyond the first region in the axial direction of the snap.

[0017] This means that a snap-on design, and more specifically, a compact design for the elastic component, can be achieved.

[0018] According to another preferred embodiment of the present invention, the second region is planned to have an end connected to the first region and a free end, wherein, as the snap is closed, the free end passes an insertion protrusion in front of the end connected to the first region. In other words, the first region extends in a direction opposite to the insertion direction of the male component into the female component.

[0019] This design has an advantage in terms of elastic preloading of the component in the closing direction when the snap is closed.

[0020] According to this utility model, the predetermined amount D is preferably in the range of 0 mm to 0.5 mm, more preferably in the range of 0 mm to 0.3 mm, and even more preferably in the range of 0 mm to 0.2 mm.

[0021] In other words, the present invention preferably provides a very small (or even zero) radial clearance. This narrow clearance, or the fact that the male part rests against the female part in the radial direction, means that the force acting on the male part in the radial direction relative to the female part will not cause the snap to open (unintentionally). Because of the narrow clearance in the radial direction or the fact that the male part rests against the female part, any tilting of the male part relative to the female part required for the snap to open (unintentionally) is more difficult or even impossible.

[0022] Finally, according to the present invention, more preferably, the female part has a base, and when the snap is closed, the gap E between the insertion protrusion and the base is in the range of 0 mm to 0.5 mm, preferably in the range of 0 mm to 0.3 mm, and more preferably in the range of 0 mm to 0.2 mm.

[0023] In other words, a very small gap, or no gap at all, is provided again between the insert protrusion and the base of the female part, which helps the snap to be stable when closed. Furthermore, this design also counteracts any (unintentional) opening of the snap due to the force acting on the female part in the radial direction relative to the male part.

[0024] The present invention will be further described in detail below with reference to the preferred exemplary embodiments in the accompanying drawings. Attached Figure Description

[0025] Figure 1 A schematic diagram of a longitudinal cross-sectional view of an exemplary embodiment of the snap fastener according to the present invention when closed is shown.

[0026] Figure 2 It shows the relationship with Figure 1 The image is the same, but the one shown is when the snaps are open.

[0027] Figure 3 A schematic diagram of the snap fastener is shown.

[0028] Figure 4 A schematic diagram of the snap fastener is shown with the elastic component inserted.

[0029] Figure 5 A schematic diagram of the elastic component is shown. Detailed Implementation

[0030] The snap fastener shown in the figure includes a male component 10, a female component 12, and a resilient component 14. The male component 10 is attached to the fabric component 18 by means of a rivet 16. The female component 12 is attached to the fabric component 22 by means of a rivet 20. When the snap fastener is closed, the male component 10 and the female component 12 have a common longitudinal axis L.

[0031] Male component 10 includes an insertion protrusion 24, which is inserted into female component 12 when the snap is closed. Female component 12 has a stop 26, and in the exemplary embodiment shown in the figure, male component 10 abuts against the stop 26 and radially abuts against the insertion protrusion 24. Therefore, in the exemplary embodiment shown, the amount D of displacement of male component 10 in the radial direction radially inward of female component 12 is 0 mm.

[0032] The female component 12 has a base 28. In the exemplary embodiment shown in the figure, when the snap is closed, the male component 10 abuts against the base 28 in the axial direction. Therefore, in the exemplary embodiment shown in the figure, the gap E between the insertion protrusion 24 and the base 28 is 0 mm.

[0033] It should be clearly pointed out that the intervals D and E are not necessarily 0 mm. That is, exemplary implementations in which the intervals D and / or E are greater than 0 are conceivable. In other words, a small gap may exist between the relevant components at one or both of the two locations.

[0034] The resilient member 14 includes two regions, namely a first region 30 and a second region 32. Both are annular in shape. The first region 30, located radially outward, is held within the mother member 12 such that it cannot be radially displaced when its radial outer side rests against the mother member 12. For example, the outer side of the first region 30 resting on a portion of the mother member 12 has a contour that mates with the contour of the portion of the mother member 12 against which the outer side of the first region 30 rests. More preferably, the outer side of the connecting region 34 resting on a portion of the mother member 12, as described later, has a contour that mates with the contour of the portion of the mother member 12 against which the outer side of the connecting region 34 rests. In the exemplary embodiment shown in the figures, this region is also held within the mother member 12 in such a manner that it cannot be displaced in either of the two axial directions, thereby contributing to the overall stability of the snap. The first region 30 is connected to the second region 32 by means of the connecting region 34. In the exemplary embodiment shown in the figures, the resilient member is made by DuPont. TM Delrin ® It is manufactured and has an elastic modulus of 2800 MPa. This value has been proven to be valid for a given geometry. Other materials can also be used for other geometries.

[0035] Due to its elastic properties and geometric proportions, the second region 32 of the elastic member 14 is adjustable relative to the first region 30, that is, the interval between the free end 36 of the second region and the first region 30 is changed, depending on the situation. The end of the second region 32 that connects to the connecting region 34 and thus to the first region 30 is indicated by reference numeral 38. Figure 5 ).

[0036] When the snap is closed, the second region 32 of the elastic member 14 deflects radially outward against the elastic rebound force of the elastic member 14, resulting in the aforementioned elastic rebound force pushing against the insertion protrusion 24 of the male member 10 in the radial direction, i.e., in the region of the surface indicated by 40 in the figures. Surface 40 is at an angle relative to the longitudinal axis L, i.e., an angle α = 5°. However, the angle α can be from 3° to 7°. Due to this positioning of surface 40, the male member 10 is preloaded in the closing direction of the snap, and in the exemplary embodiment shown in the figures, the male member 10 rests against the base 28 of the female member 12.

[0037] To further increase stability, ribs are provided radially on the outer side of the first region 32. For example, two of these ribs are indicated by reference numerals 42 and 44. They abut against the first region 30 during the opening and closing processes of the snap, as the insertion protrusion 24 radially pushes the second region 32 of the elastic member 14 outward during these processes.

[0038] The features of the present invention disclosed in the foregoing description, claims and drawings, whether in isolation or in any combination, are essential for the implementation of the present invention in its various embodiments.

Claims

1. A snap fastener, comprising: The component has an insertion protrusion; Mother component; and An elastic component, when the snap is closed, retains the insertion protrusion within the female component, wherein... When the snap is closed, the male component and the female component share a common longitudinal axis; The female component has a stop portion, and when the snap is closed, the male component rests against the stop portion after being displaced a predetermined amount in the radial direction. When the snap is closed, the elastic rebound force of the elastic component counteracts any axial displacement of the male component relative to the female component in the opening direction of the snap; Its features are, When the snap is closed, the outer side of the elastic member is supported by the mother member in the radial direction.

2. The snap of claim 1, wherein, The elastic component is configured to preload the male component axially in the closing direction.

3. The snap of claim 1 or 2, wherein, The elastic member has a first region and a second region, the first region being held in the mother piece in such a way that the first region cannot be radially displaced, the second region resting against the insertion protrusion when the snap is closed, and the second region being adjustable relative to the first region against elastic rebound force.

4. The clasp of claim 3, wherein, The second region is bendable and / or pivotable relative to the first region in the face of the elastic rebound force.

5. The clasp of claim 3, wherein, When the snap is closed, the second region rests against the surface of the insertion protrusion at an acute angle to the axial direction of the snap.

6. The clasp of claim 5, wherein, The angle is between 3° and 7°.

7. The clasp of claim 3, wherein, The second region does not protrude beyond the first region in the axial direction of the snap.

8. The clasp of claim 3, wherein, The second region has an end connected to the first region and a free end, wherein, as the snap is closed, the free end passes the insertion protrusion in front of the end connected to the first region.

9. The clasp of claim 1 or 2, wherein, The predetermined amount is in the range of 0 mm to 0.5 mm.

10. The clasp of claim 9, wherein, The predetermined amount is in the range of 0 mm to 0.3 mm.

11. The clasp of claim 10, wherein, The predetermined amount is in the range of 0 mm to 0.2 mm.

12. The clasp of claim 1 or 2, wherein, The female part has a base, and when the snap is closed, the gap between the insertion protrusion and the base is in the range of 0 mm to 0.5 mm.

13. The clasp of claim 12, wherein, The interval is in the range of 0 mm to 0.3 mm.

14. The clasp of claim 13, wherein, The interval is in the range of 0 mm to 0.2 mm.

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