WO2018033027A1

WO2018033027A1 - Anti-disengagement structure, anti-disengagement end cover and anti-disengagement method

Info

Publication number: WO2018033027A1
Application number: PCT/CN2017/097070
Authority: WO
Inventors: 杨健勃; 刘旸
Original assignee: 杨健勃
Priority date: 2016-08-19
Filing date: 2017-08-11
Publication date: 2018-02-22
Also published as: CN106089890B; CN106089890A

Abstract

Disclosed are an anti-disengagement structure, an anti-disengagement end cover and an anti-disengagement method. The anti-disengagement end cover (151) comprises a rotary knob (200) and an anti-disengagement structure (100). The anti-disengagement structure (100) comprises a connecting member (110) and an anti-disengagement member (150). The connecting member (110) comprises a connecting portion (111) and a columnar portion (112), one end portion of the columnar portion (112) being fixedly connected to the connecting portion (111) or formed with the connecting portion (111) integrally, the other end portion of the columnar portion (112) being a sealed portion (115). The anti-disengagement member (150) is arranged on the sealed portion (115), the anti-disengagement member (150) snaps with the sealed portion (115), and a limiting step is formed between the anti-disengagement member (150) and the columnar portion (112). After being sleeved on the columnar portion (112), the rotary knob (200) rotates by means of meshing with a screw thread provided between the rotary knob and the columnar portion (112), and may move along an axial direction of the columnar portion (112) during the process of rotating, then abuts against the limiting step or an extrusion section after the rotary knob (200) rotates to a certain angle, and thereby effectively preventing the rotary knob from disengaging from the columnar portion (112). The anti-disengagement method, by means of using the anti-disengagement end cover (151), may effectively realize the function of anti-disengagement.

Description

Anti-extraction structure, anti-dropout end cover and anti-outlet method

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 2016106944701, entitled "A detachment prevention structure and a detachment prevention end cover", which is incorporated herein by reference. In the application.

Technical field

The present invention relates to the field of machinery, and in particular to an anti-extraction structure, an anti-dropout end cap and a method for preventing and preventing.

Background technique

In the mechanical field, there are often cases where the kit is connected to the spool, and the sleeve and the spool can be slidably connected, and can be a threaded connection or other connection form. The kit is used to connect to other structures and achieve some desired results by changing the position of the kit on the spool.

In the above connection structure, the kit is easily detached from the spool, thereby causing the mechanical structure to fail.

Summary of the invention

The object of the present invention is to provide an anti-dropout structure and improve the deficiencies of the prior art, which can be engaged with the sealed portion by the retaining member, so that a limit step is formed between the retaining member and the column portion, which can effectively The blocking knob is disengaged.

Another object of the present invention is to provide an anti-dropout end cap comprising the above-mentioned anti-dropout structure having the full function of the anti-dropout structure.

Another object of the present invention is to provide an anti-exfoliation method for preventing the escape prevention by using an anti-dropout end cap.

Embodiments of the invention are implemented as follows:

An anti-extraction structure comprising a connecting member and a retaining member, the connecting member comprising a connecting portion and a column portion, wherein one end of the column portion is fixedly connected or integrally formed with the connecting portion, the column portion The other end portion is a sealed portion, the retaining member is disposed on the sealed portion, the retaining member is engaged with the sealed portion, and a limit is formed between the retaining member and the column portion Stairs.

Optionally, the side wall of the sealed portion is provided with at least two card slots, the retaining member includes an end cover and at least two buckles, and the end cover is coupled to the buckle, the buckle Provided on a side of the end cover corresponding to the sealed portion, one end of the buckle is a fixed end, and the other end of the buckle is a free end, the buckle has a pressing section, and the squeeze a pressing section is located between the free end and the fixed end, the fixed end is connected to the end cover, and the buckle can be locked in the card slot, with reference to a center line of the columnar portion a straight line, a distance between the outer wall of the free end and the reference line is less than or equal to a radius of the columnar portion, and a distance between an outer wall of the pressing section and the reference straight line is greater than or equal to a ratio of the columnar portion radius.

By pressing the detachment preventing member, the buckle can be locked in the card slot, and after the buckle is locked in the card slot, the detachment preventing member and the connecting member can be rigidly connected. The buckle can be deformed to a certain extent, that is, the free end can be separated from the card slot by a certain external force, and after the pressing section is added, when the sleeve and the like reach a certain position, the pressing section is pressed, and the contact part and the free part are free. The distance between the ends is small, so that the buckle is not easily deformed, and the free end is not easily separated from the card slot, thereby effectively enhancing the anti-dropout effect of the anti-out structure. Of course, the extrusion section can also be considered as a component of the limit step.

Optionally, the end cover and the buckle are fixedly connected or integrally formed, and the number of the buckles is less than or equal to the number of the card slots.

Optionally, the fixed end is fixedly connected or integrally formed with the end cover.

Optionally, the buckle includes a hook and a reinforcing rib, and the reinforcing rib is disposed away from the hook One side of the reference straight line, the hook and the reinforcing rib are fixedly connected or integrally formed, and the hook and the reinforcing rib are respectively fixedly connected or integrally formed with the end cover, and the reinforcing rib is away from the One side of the reference line includes a smoothly transitioned slope section starting from the free end, the end of the slope section near the end cap being a large diameter end, the slope section being far away One end of the end cover is a small diameter end, a distance between the large diameter end and the reference straight line is larger than a radius of the columnar portion, and a distance between the small diameter end and the reference straight line is smaller than a radius of the columnar portion .

The hook is used to cooperate with the card slot, and the reinforcing bar has at least two functions. The first function is to increase the strength of the hook, the hook is not easy to be deformed, and the second function is to provide the slope segment for pressing the knob. The pressing section is located between the large diameter end and the small diameter end, and the small diameter end ensures that the knob can reach the outer side of the slope section, and the pressing section ensures that the knob can squeeze the buckle, and finally, the knob and the like fix the buckle tightly. The fixing is realized in the card slot, and even if the knob can continue to move outward, a greater pressure is formed on the pressing section, and the buckle and the card slot are more closely matched, and the retaining member and the connecting member are not easily separated.

Optionally, the inner wall of the hook includes a first inner wall, a second inner wall and a third inner wall which are sequentially connected, the first inner wall is disposed along an axial direction of the column portion, and the second inner wall is along the column portion a radial arrangement, the third inner wall is obliquely disposed; the card slot includes a first outer wall, a second outer wall, and a third outer wall that are sequentially connected, the first outer wall being disposed along an axial direction of the column portion, a second outer wall is disposed along a radial direction of the columnar portion, the third outer wall is disposed along an axial direction of the columnar portion or the third outer wall is obliquely disposed, and a distance between the first outer wall and the reference straight line a distance larger than a distance between the third outer wall and the reference line and smaller than a radius of the columnar portion, and the first inner wall and the first outer wall are attached when the retaining member is engaged with the columnar portion The second inner wall is in contact with the second outer wall, and the third inner wall is in contact with the third outer wall or there is a gap between the third inner wall and the third outer wall.

Optionally, a plurality of the buckles are rotationally symmetric about the reference line.

Optionally, the end cover has a cylindrical shape, and one end of the end cover corresponding to the sealed portion is provided with a horizontal shape. a receiving groove having a circular cross section, the buckle is located in the receiving groove, and a part of the outer wall of the buckle is connected to the side wall of the receiving groove, and the sealed portion can protrude into the receiving groove.

The accommodating groove can accommodate the sealed portion. Even if the number of the buckle and the card slot is small, the detachment member can have a certain sway on the columnar portion, and the sealed portion can also resist the inner wall of the accommodating groove, thereby reducing the swaying and preventing the detachment. The piece is less likely to detach from the column.

Optionally, the columnar portion is provided with a limiting hole, the limiting hole is disposed along an axial direction of the column portion, and the retaining member is provided with a protrusion corresponding to the limiting hole, the protrusion It can protrude into the limiting hole.

The protrusion is located in the limiting hole, which can effectively limit the sway of the anti-dropping member, and can prevent the movement of the anti-dropping member along the radial direction of the columnar portion, thereby effectively improving the connection relationship between the anti-dropping member and the connecting member.

Optionally, the limiting hole is a groove or a blind hole or a through hole.

An embodiment of the present invention further provides an anti-dropout end cover including a knob and the above-mentioned anti-dropout structure, the knob being sleeved on an outer side of the columnar portion and capable of being fixed relative to the columnar portion, a limiting step for restricting the knob from being detached from the sealed portion; a first member is disposed between the knob and the connecting portion, the connecting portion is for connecting a second member, and the knob is capable of Living the first component, the knob being moved toward or away from the connecting portion enables relative movement of the first component and the second component.

Optionally, the column portion includes a first thread segment, the first thread segment is provided with an external thread, the knob is provided with an internal thread, the external thread is engaged with the internal thread, and the knob rotation enables The first component moves relative to the second component.

The knob can rotate about the axis of the column, and the knob can cooperate with the thread between the knob, the knob can move along the axial direction of the column. During the process of screwing the knob, the knob can press the first component, and the second component When the connecting member is fixed, the relative movement of the first component and the second component is achieved, and the desired effect is achieved. When the knob is screwed to a certain extent, the knob can be pressed against the limiting step or the pressing section, The effect prevents the knob from coming off the column.

Optionally, the knob is provided with a stepped hole, the stepped hole includes a receiving section and a second threaded section, the receiving section has a diameter larger than a diameter of the second threaded section, and the internal thread is located in the second On the threaded section, the second threaded section is threadedly engaged with the cylindrical portion, and part or all of the retaining member is located within the receiving section.

The second thread segment is threadedly engaged with the first thread segment, and the receiving portion is for accommodating part or all of the detachment preventing member. After the detachment prevention end cover is installed, the detachment preventing member is located in the stepped hole, and is not exposed, and the appearance is more beautiful. Not susceptible to interference from the outside environment.

Optionally, the knob comprises a sleeve member and at least three screwing handles, the sleeve member corresponding to the anti-dropout structure, the screwing handle is disposed along a radial direction of the sleeve member, a plurality of The knobs are rotationally symmetric about the axis of the sleeve member.

The sleeve member is sleeved on the outer side of the column portion and threadedly engaged therebetween. The screwing handle can be used to realize the rotation of the sleeve member, and the rotation of the handle makes the rotation of the knob less laborious.

An embodiment of the present invention further provides an anti-dropout method, the method comprising: arranging the knob on an outer side of the column portion, bringing the knob close to the connecting portion; and engaging the retaining member The sealed portion limits the knob from being detached from the sealed portion.

After the knob is sleeved on the outer side of the column portion, it can be moved along the axial direction of the column portion to achieve the proximity or separation from the connection portion, the connection portion is connected to the second member, and the first member is disposed between the knob and the connection portion. The relative movement of the first component relative to the second component is achieved. By the action of the limit step, the knob is prevented from being detached from the sealed portion.

Optionally, the side wall of the sealed portion is provided with at least two card slots, the retaining member includes an end cover and at least two buckles, and the end cover is coupled to the buckle, the buckle Provided on a side of the end cover corresponding to the sealed portion, one end of the buckle is a fixed end, and the other end of the buckle is a free end. The buckle has a pressing section, the pressing section is located between the free end and the fixed end, the fixing end is connected with the end cover, and the buckle can be stuck in the card slot Taking the center line of the columnar portion as a reference straight line, the distance between the outer wall of the free end and the reference straight line is less than or equal to the radius of the columnar portion, the outer wall of the pressing section and the reference straight line a distance greater than or equal to a radius of the columnar portion, moving the knob from the connecting portion to the sealed portion, the knob pressing the pressing portion and causing the free end to be clamped Said card slot.

The anti-dropping member is always engaged at the sealed portion. When the knob is about to disengage, during the movement from the free end to the fixed end, the pressing section is inevitably squeezed, and the pressing section is subjected to an external force to drive the free end to be clamped. The card slot has a relatively large relative size of the pressing section, and the more the knob is disengaged, the more the squeeze section is squeezed, so that the free end is tightly clamped and the knob cannot be disengaged.

Compared with the prior art, the beneficial effects of the embodiments of the present invention are:

After the knob is sleeved on the column, the knob can be rotated, and the thread is engaged with the columnar portion. The knob can move along the axial direction of the column during the rotation. When the knob is rotated to a certain angle, the knob is pressed against the limit. The step or the pressing section effectively prevents the knob from being detached from the columnar portion.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings show only certain embodiments of the present invention, and therefore It should be seen as a limitation on the scope, and those skilled in the art can obtain other related drawings according to these drawings without any creative work.

1 is a perspective view of an anti-off-out end cap according to an embodiment of the present invention;

Figure 2 is a front elevational view of Figure 1;

Figure 3 is a right side view of Figure 2;

Figure 4 is a cross-sectional view of Figure 2;

Figure 5 is a schematic view of the knob of Figure 4;

Figure 6 is a schematic view of the anti-outlet structure of Figure 4;

Figure 7 is a schematic view of the connector of Figure 6;

Figure 8 is a schematic view of the retaining member of Figure 6;

Figure 9 is a partially enlarged schematic view of Figure 8.

Icon: 100 - anti-out structure; 110 - connector; 111 - connection; 112 - column; 113 - reference line; 114 - first thread segment; 115 - sealed portion; 116 - card slot; Outer wall; 118-second outer wall; 119-third outer wall; 120-restricted hole; 150-anti-dropping member; 151-end cap; 152-clip; 153-receiving groove; 154-hook; 156-slope section; 157-first inner wall; 158-second inner wall; 159-third inner wall; 160-protrusion; 200-knob; 201-receiving section; 202-second thread section; 203-sleeve piece ;204-Rotate the handle.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. The components of the embodiments of the invention, which are generally described and illustrated in the figures herein, may be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the invention in the claims All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that similar reference numerals and letters indicate similar items in the following figures, and therefore, once an item is defined in a drawing, it is not necessary to further define and explain it in the subsequent drawings.

In the description of the present invention, it is to be noted that the orientations or positional relationships of the terms "center", "upper", "lower", "right", "inside", "outside", etc. are based on the drawings. Orientation or positional relationship, or the orientation or positional relationship that is conventionally placed when the product of the invention is used, is merely for the purpose of describing the present invention and simplifying the description, and does not indicate or imply that the device or component referred to has a specific orientation. The specific orientation and operation are not to be construed as limiting the invention. Moreover, the terms "first", "second", "third", and the like are used merely to distinguish a description, and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it should be noted that the terms "setting", "installing", and "connecting" should be understood broadly, and may be fixed connection, for example, or may be The connection is disassembled or connected integrally; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

Example:

1 is a front view of the anti-off-out end cap; FIG. 2 is a front view of FIG. 2; FIG. 3 is a cross-sectional view of FIG. 2; FIG. Figure 6 is a schematic view of the anti-dropout structure of Figure 4; Figure 7 is a schematic view of the connector of Figure 6; Figure 8 is a schematic view of the retaining member of Figure 6; Figure 9 is a partial enlarged view of Figure 8.

As shown in FIG. 1 to FIG. 9 , an embodiment of the present invention provides an anti-outlet structure 100. Correspondingly, an anti-dropout end cover and an anti-dropout method are provided. The anti-exit end cap mainly includes a knob 200 and an anti-outlet. Structure 100, for convenience of description, the knob 200 and the anti-dropout structure 100 are correspondingly described. Of course, the anti-extraction structure 100 can be completely independent of the structure such as the knob 200, and the anti-extraction structure 100 in the anti-extraction end cover can be separately existed, produced, fabricated, used, etc., and the components of the anti-extraction structure 100 are There are also many components that can be selectively used or removed. The anti-out method is The anti-extraction end cover is used to prevent the escape.

As shown in FIG. 1 to FIG. 3, the knob 200 is coupled to the anti-dropout structure 100, and the knob 200 is mounted on the anti-dropout structure 100. In this embodiment, the knob 200 can be rotatably disposed on the outer side of the anti-dropout structure 100. The 200 can be rotated and displaced relative to the anti-outlet structure 100.

As shown in FIG. 6 and FIG. 7 , the specific structure of the anti-outlet structure 100 is that the anti-extraction structure 100 includes a connecting member 110 and a retaining member 150 . The connecting member 110 includes a connecting portion 111 and a column portion 112 , and the column portion 112 can be selected but It is not limited to a cylindrical shape. For example, the cross section of the columnar portion 112 may be a rectangle, a polygon, an irregular shape, or the like. The columnar portion 112 may also be a cylinder in which the outer wall is provided with a groove, and the groove is disposed along the axial direction of the cylinder.

As shown in FIG. 6 and FIG. 7, the center line of the columnar portion 112 is used as a reference line 113. The reference line 113 is a straight line for describing a convenient virtual, and has no practical meaning. If the columnar portion 112 is cylindrical, then The center line can be regarded as the axis of the cylinder. Of course, if the columnar portion 112 has an irregular shape, the center line can be regarded as the center line of the columnar portion 112 or the axis of rotation of the knob 200, and the column portion 112 cannot be identified by this feature. It is cylindrical.

As shown in FIG. 4, in the present embodiment, the columnar portion 112 is arranged in a cylindrical shape. This structure is a preferred option, and the knob 200 can be rotatably sleeved, and the knob 200 can be rotated, wherein the columnar portion 112 is One end portion is fixedly connected or integrally formed with the connecting portion 111. The fixed connection may be a detachable connection, a non-detachable connection, or the like. In one piece, the columnar portion 112 and the connecting portion 111 are integrally formed to form a whole, and the column portion 112 is integrally formed. The other end is the sealed portion 115, where the end portion does not refer to the end face of the cylinder, but the portion of the cylinder near the end face, which may include the end face.

The connecting member 110 has at least two functions, that is, the second member and the knob 200 are connected, wherein the knob 200 is sleeved on the outer wall of the column portion 112, and the first component is disposed between the knob 200 and the connecting portion 111, and the connecting portion 111 is used. Connecting the second component, wherein the first component and the second component are external components, not The components of the anti-extraction structure 100 are also not part of the anti-extraction end cap, and are here mainly used to illustrate the position and function of the anti-extraction member and the assembly for preventing the end cap. The first member and the second member are movable relative to each other, for example, the first member is fixed and the second member is movable, or the first member is movable and the second member is fixed, and it should be noted that "fixed" is referred to herein. And “activity” is a relative concept, not an absolute fixation or activity.

As shown in FIG. 4, the connection relationship between the knob 200 and the columnar portion 112 may be that the knob 200 is sleeved on the outer side of the column portion 112. As shown in FIG. 7, the column portion 112 includes a first thread segment 114, a first thread. The segment 114 is provided with an external thread. As shown in FIG. 5, the knob 200 is provided with an internal thread, the external thread is engaged with the internal thread, the knob 200 can be rotated, and during the rotation of the knob 200, under the engagement of the external thread and the internal thread, the knob 200 Moving along the axial direction of the columnar portion 112, the positional relationship between the knob 200 and the connecting portion 111 is changed, that is, the knob 200 is close to or away from the connecting portion 111, etc., and the positional relationship between the knob 200 and the connecting portion 111 is adjusted. The knob 200 can be pressed against the first component. During the adjustment of the knob 200, the positional relationship between the first component and the connecting portion 111 is changed to achieve a relative movement between the first component and the second component.

The knob 200 is sleeved on the outer side of the column portion 112, and the knob 200 can be relatively moved on the column portion 112 by the cooperation of the threads. It may also be that a strip-shaped groove is formed in the outer wall of the columnar portion 112, and the strip-shaped groove extends along the axial direction of the columnar portion 112. The strip-shaped groove is provided with a plurality of notches communicating with the strip-shaped groove along the extending direction thereof. A gap can be understood as a snap point on a strip slot. The sleeved portion 112 of the knob 200 is provided with a spherical protrusion, and the spherical protrusion can be embedded in the strip groove. When the knob 200 moves relative to the column portion 112, the spherical protrusion slides in the strip groove and slides. After being in the proper position, the knob 200 can be rotated to rotate about the axis of the columnar portion 112. The spherical protrusion is inserted into the notch to achieve relative fixation of the knob 200 and the columnar portion 112. With this structure, the desired effect can also be achieved.

The detachment preventing member 150 is used to restrict the detachment of the knob 200 from the sealed portion 115, that is, the detachment preventing member 150 is mounted on After being sealed, the knob 200 can only move on the column portion 112, and cannot be detached from the sealed portion 115 from the column portion 112. Specifically, the retaining member 150 can be disposed on the sealed portion 115, and the retaining member 150 can be sealed. The portion 115 is engaged, and a limit step is formed between the retaining member 150 and the columnar portion 112. If a part of the retaining member 150 is cylindrical, the diameter of the cylindrical shape is larger than the diameter of the column portion 112 to form a limiting step, and the knob 200 is rotated to a certain position to abut the limiting step, and if the retaining member 150 is irregular The shape is such that the distance between the edge of the retaining member 150 and the axis of the column portion 112 is greater than the radius of the column portion 112.

The specific form of the retaining member 150 and the sealed portion 115 can be selected, but is not limited to the following solutions: as shown in FIG. 7, the side wall of the sealed portion 115 is provided with at least two card slots 116, as shown in FIG. The retaining member 150 includes an end cap 151 and at least two snaps 152.

In this embodiment, the end cap 151 has a cylindrical shape. Of course, the end cap 151 may also have other regular shapes or irregular shapes. As shown in FIG. 8, the end cap 151 is provided with a horizontal end near the sealed portion 115. The receiving groove 153 is circular, and the buckle 152 is located in the receiving groove 153. The receiving groove 153 includes a bottom wall and a side wall. A part of the outer wall of the buckle 152 is connected to the side wall of the receiving groove 153, and can be fixedly connected and integrally formed. In the connection mode, the sealed portion 115 protrudes into the accommodating groove 153. As shown in FIG. 6, the portion of the sealed portion 115 is embedded in the accommodating groove 153, and the sealed portion 115 and the side wall of the accommodating groove 153 can be fitted together.

The buckle 152 is preferably disposed in a rotationally symmetric manner between the plurality of buckles 152 about the reference line 113. Similarly, the sealed portion 115 can also be rotationally symmetric about the reference line 113, and the end cover 151 and the buckle 152 are fixedly connected or In one piece, the number of the buckles 152 is less than or equal to the number of the card slots 116. In the embodiment, the number of the buckles 152 is equal to the number of the card slots 116 and both are two, thereby maximally maintaining the columnar portion 112. The strength can also satisfy the stability of the connection. The buckle 152 is disposed on a side of the end cover 151 corresponding to the sealed portion 115. As shown in FIG. 9, one end of the buckle 152 is a fixed end, and the other end of the buckle 152 is a free end, and the free end can be a certain small The distance is displaced, so that the buckle 152 can be deformed to a certain extent, thereby achieving the engagement between the buckle 152 and the sealed portion 115. And the detachment and the like, the buckle 152 has a pressing section, the pressing section is located between the free end and the fixed end, and the fixed end is fixedly connected or integrally formed with the end cover 151. In the embodiment, between the fixed end and the end cover 151 The connection mode is integrally formed, and the buckle 152 can be locked in the card slot 116.

As shown in FIG. 9, the distance between the outer wall of the free end and the reference line 113 is less than or equal to the radius of the columnar portion 112, and the distance between the outer wall of the pressing section and the reference line 113 is greater than or equal to the radius of the columnar portion 112. During the rotation of the knob 200, the free end does not block the knob 200. When the knob 200 moves to the pressing section, the inner wall of the knob 200 contacts the pressing section, the knob 200 abuts against the pressing section, and the buckle 152 is difficult to bend, and the buckle The 152 is more securely fixed in the card slot 116, thereby achieving the purpose that the buckle 152 cannot be detached from the card slot 116.

As shown in FIG. 9, one of the optional structures of the buckle 152 is that the buckle 152 includes a hook 154 and a reinforcing rib 155. The reinforcing rib 155 is disposed on a side of the hook 154 away from the reference straight line 113. Here, in a state in which the retaining member 150 is engaged with the connecting member 110, the same does not exist when the two are separated. During the engagement of the buckle 152 with the sealed portion 115, the buckle 152 faces away from the reference straight line. The direction of 113 is curved, and after the reinforcing rib 155 is added, the strength of the buckle 152 can be increased to effectively prevent the buckle 152 from being broken.

In addition, the rib 155 has another function, that is, in contact with the knob 200, the knob 200 can abut the rib 155 and make the buckle 152 difficult to bend, thereby making it difficult for the buckle 152 to be detached from the slot 116, and the knob 200 cannot be removed from the knob 200. The columnar portion 112 is detached, and the hook 154 and the rib 155 are fixedly connected or integrally formed. The width of the rib 155 may be smaller than the width of the hook 154. The hook 154 and the rib 155 are fixedly connected or integrally formed with the end cover 151, respectively. In the example, the hook 154, the rib 155 and the end cap 151 are integrally formed.

In order to enable the reinforcing rib 155 to prevent the knob 200 from coming out, as shown in FIG. 8 and FIG. 9, the specific structure of the reinforcing rib 155 may be that the side of the reinforcing rib 155 away from the reference straight line 113 includes a flat surface. The smooth transition slope section 156, the smooth transition means that the distance between the slope section 156 and the reference line 113 is gradually changed, without a step, etc., the slope section 156 can be a plane, a curved surface, etc., the slope section 156 begins At the free end, it can stop at the fixed end or stop at a position between the free end and the fixed end.

As shown in FIG. 9, one end of the slope section 156 near the end cover 151 is a large diameter end, and one end of the slope section 156 away from the end cover 151 is a small diameter end, and the large diameter end and the small diameter end are relative concepts, that is, a large diameter. The distance between the end and the reference line 113 is greater than the distance between the small diameter end and the reference line 113. In addition, the large diameter end and the small diameter end do not mean that the slope section 156 is a columnar surface, and the slope section 156 may be a plane, a curved surface, or a columnar surface. In the structure, the distance between the large diameter end and the reference straight line 113 is larger than the radius of the columnar portion 112, and the distance between the small diameter end and the reference straight line 113 is smaller than the radius of the columnar portion 112. When the knob 200 is screwed to a certain position, the knob 200 is pressed against a position between the large diameter end and the small diameter end, and the knob 200 presses the buckle 152 inward, and the pressing portion can serve as a pressing section, and the buckle 152 The engagement with the card slot 116 is more secure.

The specific structure of the hook 154 and the card slot 116 may be selected from, but not limited to, the following scheme: as shown in FIG. 9, the inner wall of the hook 154 includes a first inner wall 157, a second inner wall 158 and a third inner wall 159 which are sequentially connected, and the first inner wall 157 The second inner wall 158 and the third inner wall 159 may be a flat surface, a curved surface, a cylindrical surface, a round mesa, etc., the first inner wall 157 is disposed along the axial direction of the columnar portion 112, and the second inner wall 158 is disposed along the radial direction of the columnar portion 112. The third inner wall 159 is disposed obliquely, and the third inner wall 159 is inclined with respect to the reference straight line 113, that is, the reference straight line 113 and the third inner wall 159 intersect at a certain extension portion, and the outer portion of the second inner wall 158 is first and the first portion The inner wall 157 is connected, and the inner portion of the second inner wall 158 is connected to the third inner wall 159.

As shown in FIG. 7, the card slot 116 includes a first outer wall 117, a second outer wall 118, and a third outer wall 119 which are sequentially connected. The first outer wall 117, the second outer wall 118, and the third outer wall 119 may be flat, curved, and cylindrical. a structure such as a circular mesa, the first outer wall 117 is disposed along the axial direction of the columnar portion 112, the second outer wall 118 is disposed along the radial direction of the columnar portion 112, and the third outer wall 119 is disposed or inclined along the axial direction of the columnar portion 112. In the present embodiment, the third outer wall 119 is disposed along the axial direction of the columnar portion 112, and the distance between the first outer wall 117 and the reference straight line 113 is greater than the distance between the third outer wall 119 and the reference straight line 113 and smaller than the columnar portion. The radius of 112, when the retaining member 150 is engaged with the columnar portion 112, the first inner wall 157 is in contact with the first outer wall 117, the second inner wall 158 is in contact with the second outer wall 118, and the third inner wall 159 is attached to the third outer wall 119. There is a gap between the third or inner wall 159 and the third outer wall 119.

In order to make the connection between the detachment member 150 and the column portion 112 more secure, an alternative is provided in the embodiment: as shown in FIG. 7, the column portion 112 is provided with a limiting hole 120, and the limiting hole 120 can be a recess or a blind hole or a through hole, the limiting hole 120 is disposed along the axial direction of the column portion 112, and the limiting hole 120 starts from an end of the column portion 112 near the retaining member 150. As shown in FIG. 8, the retaining member 150 A protrusion 160 corresponding to the limiting hole 120 is disposed. As shown in FIG. 6 , the protrusion 160 is located on a side of the retaining member 150 adjacent to the column portion 112 , and the protrusion 160 extends into the limiting hole 120 , and the protrusion 160 The inner wall of the limiting hole 120 may be attached to the inner wall of the limiting hole 120, or the protrusion 160 may be arranged in a truncated cone shape, and a part of the protrusion 160 may be attached to the inner wall of the limiting hole 120. The limiting hole 120 and the protrusion 160 cooperate with each other, and the retaining member 150 cannot move in the radial direction of the column portion 112 to prevent the retaining member 150 from shaking, and the buckle 152 can be effectively prevented from being detached from the slot 116.

As shown in FIG. 5, the specific structure of the knob 200 in the anti-outlet end cover may be: the knob 200 is provided with a stepped hole, and the stepped hole includes two parts, respectively, a receiving section 201 and a second threaded section 202, and the diameter of the receiving section 201 is larger than The diameter of the second threaded section 202, the receiving section 201 is for receiving a portion of the retaining member 150, the second threaded section 202 is provided with an external thread and is threadedly engaged with the cylindrical portion 112, and part or all of the retaining member 150 is located for receiving In segment 201. After the anti-off-out end cover is installed, the anti-dropping member 150 is located in the stepped hole, thereby effectively avoiding the influence of the external environment on the anti-dropping member 150, and at the same time, the anti-detachment end cap can be compact and beautiful.

As shown in FIG. 2, the knob 200 may be configured such that the knob 200 includes a sleeve member 203 and at least three a screwing handle 204. In the present embodiment, the number of the screwing handles 204 is three, the sleeve member 203 corresponds to the anti-dropout structure 100, and the screwing handle 204 is disposed along the radial direction of the sleeve member 203, and the plurality of knobs The handles are rotationally symmetric about the axis of the sleeve member 203 between the handles 203. The screwing handle 204 can be a curved piece for easy application of force.

The embodiment of the present invention further provides a method for preventing the detachment, comprising: arranging the knob 200 on the outer side of the column portion 112 to bring the knob 200 close to the connecting portion 111; and engaging the detaching member 150 to the sealed portion 115; The limit knob 200 is detached from the sealed portion 115.

After the knob 200 is sleeved on the outer side of the column portion 112, it can be moved along the axial direction of the column portion 112 to achieve proximity to or away from the connecting portion 111. The connecting portion 111 is connected to the second member, and the knob 200 is disposed between the knob portion 111 and the connecting portion 111. The first component, when the knob 200 is relatively moved, effects movement of the first component relative to the second component. The knob 200 is prevented from being detached from the sealed portion 115 by the action of the limit step.

Optionally, the side wall of the sealed portion 115 is provided with at least two card slots 116. The retaining member 150 includes an end cover 151 and at least two buckles 152. The end cover 151 and the buckle 152 are connected, and the buckle 152 is disposed on the cover 152. One end of the end cover 151 corresponding to the sealed portion 115, one end of the buckle 152 is a fixed end, and the other end of the buckle 152 is a free end, the buckle 152 has a pressing section, and the pressing section is located at the free end and the fixed end. The fixed end is connected to the end cover 151, and the buckle 152 can be locked in the slot 116. The center line of the column portion 112 is a reference line 113, and the distance between the outer wall of the free end and the reference line 113 is less than or equal to the column portion. The radius of 112, the distance between the outer wall of the pressing section and the reference line 113 is greater than or equal to the radius of the columnar portion 112, moving the knob 200 from the connecting portion 111 to the sealed portion 115, and the knob 200 squeezes the pressing section and makes it free The end clamps the card slot 116.

The retaining member 150 is always engaged at the sealed portion 115. When the knob 200 is about to be disengaged, during the movement from the free end to the fixed end, the pressing portion is inevitably squeezed, and the pressing portion is subjected to an external force to drive freedom. The end clamps the slot 116, the relative size of the pressing section is larger, and the more the knob 200 is disengaged, the more squeezed it is. The pressing section causes the free end to become tighter and the knob 200 cannot be disengaged.

It should be noted here that the above structure is described in the process of describing the relative positional relationship of the structure, which mainly refers to a certain structure which is displayed after being matched or mounted to each other. The structures shown in Figures 1-9 can be manufactured without being strictly in accordance with the scales in the drawings, allowing for certain errors.

The working process of preventing the end cap (can be changed, deleted or added according to the specific structure):

The mounting step: the connecting portion 111 is fixedly connected to the second member, and the retaining member 150 and the column portion 112 are separated, the first member is sleeved on the outside of the column portion 112, and then the knob 200 is installed, and the knob 200 is screwed. The knob 200 is moved along the axial direction of the column portion 112, and after the knob 200 reaches a certain position, the retaining member 150 is engaged with the sealed portion 115, and the protrusion 160 of the retaining member 150 is embedded in the limiting hole 120. The release member 150 forms a limit step with the columnar portion 112.

Working step: a first component is placed between the knob 200 and the connecting portion 111, the knob 200 can be pressed against the first component, and the first component and the second component can be moved relative to each other. The direction of rotation when the direction of movement of the retaining member 150 is set to a positive rotation, and the other direction of rotation is a reverse rotation. During the forward rotation of the knob 200, the knob 200 abuts against the first member and pushes it relative to When the second component moves; when the knob 200 is reversely screwed, the first component can follow the knob 200 to return to the original position, or can not return to the original position.

Anti-extraction principle: after the knob 200 reaches a certain position, the reverse rotation is continued, and the inner wall of the knob 200 abuts the slope section 156 of the reinforcing rib 155, and the knob 200 presses the buckle 152 into the slot 116, and the buckle 152 is difficult to occur. The bending deformation causes the buckle 152 to be detached from the slot 116, that is, the retaining member 150 cannot be detached from the sealed portion 115, and the retaining member 150 limits the knob 200, and the knob 200 cannot be dropped, thereby preventing the knob 200 from coming off. Effect.

It should be noted that, in the case of no conflict, the features in the embodiments of the present invention may be mutually Combine.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability:

In summary, the present invention provides an anti-dropout structure that can more effectively prevent the knob from being detached from the columnar portion. By using the anti-dropout end cap, the anti-dropout effect can be effectively achieved.

Claims

An anti-extraction structure, comprising: a connecting member and a retaining member, the connecting member comprising a connecting portion and a column portion, wherein one end of the column portion is fixedly connected or integrally formed with the connecting portion, The other end of the columnar portion is a sealed portion, the retaining member is disposed on the sealed portion, the retaining member is engaged with the sealed portion, and the retaining member and the column portion are A limit step is formed between them.
The anti-outlet structure according to claim 1, wherein the side wall of the sealed portion is provided with at least two card slots, and the retaining member comprises an end cover and at least two buckles, the end cover The buckle is connected to the buckle, the buckle is disposed on a side of the end cover corresponding to the sealed portion, one end of the buckle is a fixed end, and the other end of the buckle is a free end. The buckle has a pressing section, the pressing section is located between the free end and the fixed end, the fixing end is connected with the end cover, and the buckle can be locked in the card slot Taking a center line of the columnar portion as a reference straight line, a distance between the outer wall of the free end and the reference straight line is less than or equal to a radius of the columnar portion, and an outer wall of the pressing section and the reference straight line The distance between the two is greater than or equal to the radius of the columnar portion.
The anti-outlet structure according to claim 2, wherein the end cap and the buckle are fixedly connected or integrally formed, and the number of the buckles is less than or equal to the number of the card slots.
The anti-dropout structure according to claim 2 or 3, wherein the fixed end is fixedly connected or integrally formed with the end cap.
The anti-dropout structure according to any one of claims 2 to 4, wherein the buckle comprises a hook and a reinforcing rib, and the reinforcing rib is disposed on a side of the hook away from the reference straight line, The hook and the reinforcing rib are fixedly connected or integrally formed, and the hook and the reinforcing rib are respectively fixedly connected or integrally formed with the end cover, and a side of the reinforcing rib away from the reference straight line includes a smooth transition a slope section, the slope section begins at the free end, and an end of the slope section adjacent to the end cover is a large diameter end, and an end of the slope section away from the end cover is a small diameter end The large diameter end and the The distance between the reference straight lines is greater than the radius of the cylindrical portion, and the distance between the small diameter end and the reference straight line is smaller than the radius of the cylindrical portion.
The anti-outlet structure according to claim 5, wherein the inner wall of the hook includes a first inner wall, a second inner wall, and a third inner wall which are sequentially connected, and the first inner wall is disposed along an axial direction of the columnar portion The second inner wall is disposed along a radial direction of the columnar portion, and the third inner wall is obliquely disposed; the card slot includes a first outer wall, a second outer wall, and a third outer wall that are sequentially connected, the first outer wall along The columnar portion is disposed axially, the second outer wall is disposed along a radial direction of the columnar portion, and the third outer wall is disposed along an axial direction of the columnar portion or the third outer wall is inclined, the first portion a distance between an outer wall and the reference straight line is greater than a distance between the third outer wall and the reference straight line and smaller than a radius of the columnar portion, and when the retaining member is engaged with the columnar portion, The first inner wall is in contact with the first outer wall, the second inner wall is in contact with the second outer wall, and the third inner wall is attached to the third outer wall or the third inner wall and the first inner wall There is a gap between the three outer walls.
The anti-dropout structure according to claim 6, wherein a plurality of said snaps are rotationally symmetrical about said reference line.
The anti-extraction structure according to any one of claims 2 to 7, wherein the end cap has a cylindrical shape, and one end of the end cap corresponding to the sealed portion is provided with a circular cross section. a slot, the buckle is located in the receiving groove, and a part of the outer wall of the buckle is connected to a side wall of the receiving groove, and the sealed portion can protrude into the receiving groove.
The anti-dropout structure according to any one of claims 1 to 7, wherein the columnar portion is provided with a limiting hole, the limiting hole is disposed along an axial direction of the columnar portion, and the retaining member is disposed. There is a protrusion corresponding to the limiting hole, and the protrusion can protrude into the limiting hole.
The anti-dropout structure according to claim 9, wherein the limiting hole is a groove or a blind hole or a through hole.
A detachment prevention end cover, comprising: a knob and the detachment prevention structure according to any one of claims 1 to 10, wherein the knob is sleeved on an outer side of the columnar portion and is fixable relative to the columnar portion The limit step is configured to restrict the knob from being detached from the sealed portion;

Between the knob and the connecting portion for providing a first component, the connecting portion for connecting a second component, the knob being capable of abutting against the first component, the knob being close to or away from the connecting portion enables The first component moves relative to the second component.
The fall prevention end cap according to claim 11, wherein the columnar portion includes a first threaded section, the first threaded section is provided with an external thread, and the knob is provided with an internal thread, the external thread and The internal threads engage, and the rotation of the knob enables relative movement of the first member and the second member.
The anti-ejection end cap according to claim 12, wherein the knob is provided with a stepped hole, the stepped hole includes a receiving section and a second threaded section, and the diameter of the receiving section is larger than the second threaded section The diameter of the internal thread is on the second threaded section, the second threaded section is threadedly engaged with the cylindrical portion, and part or all of the retaining member is located in the receiving section.
The anti-ejection end cap according to any one of claims 11 to 13, wherein the knob comprises a sleeve member and at least three screwing handles, the sleeve member corresponding to the anti-dropout structure, The screwing handle is disposed along a radial direction of the sleeve member, and a plurality of the knob handles are rotationally symmetric about an axis of the sleeve member.
An anti-outlet method using the anti-ejection end cap of any of claims 11-14, the method comprising:

The knob is sleeved on the outer side of the column portion, so that the knob is close to the connecting portion;

Engaging the retaining member with the sealed portion;

The limit step limits the knob from being disengaged from the sealed portion.
The anti-dropout method according to claim 15, wherein the side wall of the sealed portion is provided with at least two card slots, and the retaining member comprises an end cover and at least two buckles, the end cover The buckle is connected to the buckle, the buckle is disposed on a side of the end cover corresponding to the sealed portion, one end of the buckle is a fixed end, and the other end of the buckle is a free end. The buckle has a pressing section, the pressing section is located between the free end and the fixed end, the fixing end is connected with the end cover, and the buckle can be locked in the card slot Taking a center line of the columnar portion as a reference straight line, a distance between the outer wall of the free end and the reference straight line is less than or equal to a radius of the columnar portion, and an outer wall of the pressing section and the reference straight line a distance greater than or equal to a radius of the column portion, moving the knob from the connecting portion to the sealed portion, the knob pressing the pressing portion and causing the free end to clamp the Card slot.