CN218031013U - Fastening assembly - Google Patents

Abstract

The utility model relates to a fastener technical field especially relates to a fastening components. According to the technical scheme, the fastening assembly at least comprises the first fastening piece and the second fastening piece, the protruding portion with the simple structure is embedded into the target piece contacted with the protruding portion when the first fastening piece and the second fastening piece rotate relatively, the degree of freedom of the fastening piece with the protruding portion in the rotating direction is limited, and therefore the fastening piece with the protruding portion does not rotate along with the other fastening piece, and the purpose of good fastening is achieved. At this in-process, do not need the manual cooperation, just the utility model discloses simple structure, the cost is lower, and assembly efficiency is high.

Description

Fastening assembly

Technical Field

The utility model relates to a fastener technical field especially relates to a fastening components.

Background

Fasteners are a very widely used class of mechanical parts for fastening connections. A wide variety of fasteners are found on a variety of machines, equipment, vehicles, boats, railways, bridges, buildings, structures, tools, instruments, gauges, supplies, and the like.

Fastening assemblies are used primarily to fasten two or more objects together to be fastened. In the process of tightening the fastening components, when the fastening components are fastened to a certain degree, the situation that one fastening component continuously applies torque to the other fastening component can follow the rotation can happen, and the fastening effect is poor.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model provides a fastening components to avoid appearing the fastener at the tightening process and follow pivoted problem.

The application provides a fastening components is used for connecting a plurality of target spare fastening, all the target spare is along the range upon range of setting of first direction, includes: the first fastener comprises a contact part of the rod part and the rod part, the outer peripheral surface of the rod part is provided with a first thread, the second fastener comprises a main body part, the main body part is provided with a through hole, the inner wall of the through hole is provided with a second thread matched with the first thread, and the main body part is detachably connected to the rod part by virtue of the through hole;

the contact part is provided with a first surface, the main body part is provided with a second surface, and one of the first surface and the second surface is provided with a convex part; when the rod part penetrates through all the target parts along the first direction in sequence and the first fastening part and the second fastening part rotate relatively, the protruding part can be embedded in the target part contacted with the surface where the protruding part is located so as to limit the degree of freedom of the fastening part provided with the protruding part in the rotating direction; the first direction is perpendicular to the first surface and the second surface.

According to the technical scheme, the fastening assembly at least comprises the first fastening piece and the second fastening piece, the protruding portion with the simple structure is embedded into the target piece contacted with the protruding portion when the first fastening piece and the second fastening piece rotate relatively, the degree of freedom of the fastening piece with the protruding portion in the rotating direction is limited, and therefore the fastening piece with the protruding portion does not rotate along with the other fastening piece, and the purpose of good fastening is achieved. At this in-process, do not need the manual cooperation, just the utility model discloses simple structure, the cost is lower, and assembly efficiency is high.

In one embodiment, the hardness level of the projection is greater than the hardness level of the target member with which the surface of the projection contacts. This further facilitates the embedding of the projection into the object with which the surface is in contact.

In one embodiment, the protrusion is provided in plurality, and all of the protrusions are arranged on the surface of the protrusion around an axis, and the axis and the first direction are parallel to each other. Thus, the arrangement shape of the convex parts can ensure that the convex parts are distributed on both sides of the surface axis where the convex parts are arranged.

In one embodiment, all of the projections are circumferentially disposed about the axis on the surface on which the projections are located. Therefore, by designing the arrangement shape of the convex parts, the stress of the convex parts can be consistent with the surface of the convex parts.

In one embodiment, all of the projections are equally spaced on the surface on which the projections are located. Therefore, the convex parts can be uniformly stressed by designing the arrangement shape of the convex parts.

In one embodiment, all the projections are symmetrically arranged around the axis on the surface on which the projections are located. Therefore, the arrangement shape of the convex parts is designed, so that the convex parts are uniformly distributed on two sides of the surface axis where the convex parts are located.

In one embodiment, all the convex parts are arranged on the surface of the convex part at equal intervals. Therefore, the arrangement shape of the convex parts is designed, so that the convex parts are uniformly distributed in a circumferential shape at two ends of the axis.

In one embodiment, a plane perpendicular to the first direction is a reference plane; the shape of the orthographic projection of the projection on the reference surface comprises at least one of a circle and a polygon. Therefore, the freedom degree of the fastener with the convex parts in the rotating direction can be better limited by designing the arrangement shape of the convex parts.

In one embodiment, the protrusion and the fastener in which the protrusion is located are of an integral structure; or the protruding part and the fastener where the protruding part is located are of a split structure. Therefore, the corresponding manufacturing mode can be flexibly selected according to the use requirement so as to obtain the required structure.

In one embodiment, the rod portion and the contact portion are of a one-piece structure; or the rod part and the contact part are of a split structure. In this way, the matched first fastener can be selected according to the use requirement.

In one embodiment, the contact portion is provided at one end of the rod portion in the first direction. So, through locating the structure formation of the one end of pole portion with the contact site, not only the preparation of being convenient for can also further improve the utilization ratio of pole portion.

In one embodiment, the stem portion is removably coupled to the contact portion. Thus, the rod part and the contact part are convenient to disassemble and assemble.

Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the present application.

Drawings

FIG. 1 is an exploded view of a fastener assembly according to an embodiment of the present application;

FIG. 2 is a schematic view of the use of a fastener assembly in one embodiment of the present application;

FIG. 3 is an exploded view of a fastener assembly according to another embodiment of the present application;

FIG. 4 is a schematic view of another embodiment of the present application showing the use of the fastener assembly.

The reference numbers are as follows:

a fastening assembly 10;

first fastener 100, shank 110, contact portion 120, first surface 121;

second fastener 200, body portion 210, through hole 212, second surface 211;

a projection p;

a first target member 20;

a second target member 30;

axis a, first direction F ₁ 。

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Fasteners are a very widely used class of mechanical parts for fastening connections. A wide variety of fasteners are found on a variety of machines, equipment, vehicles, boats, railways, bridges, buildings, structures, tools, instruments, meters, supplies, and the like. Fastening assemblies are used primarily to fasten two or more objects together to be fastened.

The inventors have noted that during tightening of the fasteners, when the tightening assembly is tightened to a certain extent, the continued application of torque to one of the fasteners of the tightening assembly and the following rotation of the other fastener can occur. Once the follow-up rotation occurs, relative rotation between one fastener and the other fastener cannot be generated, and further screwing is difficult. Thus, the fastening effect is poor.

In the related art, two wrenches are used to apply opposite forces to one fastener and the other fastener to prevent the occurrence of the follow-up phenomenon. However, this method requires cooperation of two persons, and is inconvenient to operate when the working space is narrow, resulting in low fastening efficiency and increased labor cost.

In order to avoid the follow-up of the fastening assembly during the fastening process, the inventor of the application researches and discovers that the freedom degree of the fastening A in the blocking fastening assembly in the rotating direction can be limited. Specifically, the fastener A can contact a corresponding target part to be fastened before the follow-up rotation is generated, and the rotation of the fastener A is limited by the mutual contact between the target part to be fastened and the fastener A.

In view of the above, the inventors of the present application have conducted extensive studies to design a fastening assembly in which a protrusion is provided on a contact surface between a fastening piece a of the fastening assembly and a corresponding target member to be fastened, in order to avoid the fastening assembly from following up during the fastening process. The design is such that when torque is applied to the fastener B of the fastening assembly, and when the fastener A contacts with a corresponding target piece to be fastened and the fastener B generates axial force to the fastener A under the action of the applied torque, the protruding part can be embedded on the corresponding target piece to be fastened under the action of the axial force. On the basis, when the fastener A is driven to rotate, the protruding part is limited on the corresponding target piece to be fastened, so that the rotation of the fastener A is limited. Thus, the follow-up rotation of the fastening assembly in the fastening process is avoided.

The fastening assembly provided herein is further described below in conjunction with the associated figures and some embodiments of the present application.

FIG. 1 shows an exploded view of a fastener assembly in an embodiment of the present application; FIG. 2 shows a schematic view of the use of the fastening assembly in one embodiment of the present application; for convenience of explanation, only matters related to the embodiments of the present application are shown. For example, the target member is illustrated in combination in fig. 2.

It should be noted that the fastening assembly provided by the embodiment of the present application can be used for fastening and connecting a plurality of target members. The plurality of target members may be two, three, four, or other number. The target member may be plate-shaped or rod-shaped. The number and shape of the target members may be determined according to actual use conditions, and the embodiment of the present application does not specifically limit this. For example, in FIG. 2, two pairs in a first direction F are illustrated ₁ The case where the target members (i.e., the first target member 20 and the second target member 30) in a plate shape are stacked and arranged are fastened.

In some embodiments of the present application, referring to fig. 1, a fastening assembly 10 provided in an embodiment of the present application includes a first fastener 100 and a second fastener 200. The first fastener 100 includes a shank 110 and a contact portion 120 connected to the shank 110, and the shank 110 is provided with a first thread (not shown) on an outer circumferential surface thereof. The second fastener 200 includes a body portion 210. The body portion 210 is provided with a through hole 212, the inner wall of the through hole 212 is provided with a second screw (not shown) adapted to the first screw, and the body portion 210 is detachably connected to the stem portion 110 via the through hole 212.

Here, the above-mentioned "shaft portion 110" means a member that can pass through all the target members and can be engaged with the second fastener 200. Alternatively, the stem 110 may be a screw, without limitation.

The "contact portion 120" refers to a component connected to the rod portion 110 to drive the rod portion 110 to rotate when in use, and may be a hexagonal head, a round head, a square head or a head portion with other shapes connected to the rod portion 110, which is not limited herein. The shaft portion 110 and the contact portion 120 may be formed as an integral structure, so that the manufacturing is more convenient, and the integral structure may be manufactured by upsetting or other integrally forming manufacturing methods. Alternatively, the shaft 110 and the contact portion 120 may be formed in a separate structure, so as to be easily disassembled, and may be formed by forging or other manufacturing methods.

In the "outer peripheral surface of the shank 110 is provided with the first thread", the outer peripheral surface of the shank 110 means an outer surface that surrounds the shank 110 in the axial direction by one turn, and the "first thread" means a thread for enabling the first fastening member 100 to be fitted and fastened to the second fastening member 200.

"body portion 210" refers to a component that can be matingly coupled to first fastener 100. Alternatively, the first fastening member 100 may be formed as a nut or the like, without limitation.

In "the inner wall of the through hole 212 is provided with the second screw thread adapted to the first screw thread", the inner wall of the through hole 212 means a cylindrical and closed surface constituting the through hole 212. "second thread" means a thread that mates with and fastens to the first thread.

"main part 210 is detachably connected to rod part 110 with the aid of through-hole 212", that is, when rod part 110 passes through-hole 212, the first screw thread that sets up on the outer peripheral surface of rod part 110 can cooperate with the second screw thread that sets up on the inner wall of through-hole 212 to make fastening assembly 10 produce relative displacement between rod part 110 and main part 210 under the condition that the exogenic action produced the moment of torsion, and then realize fastening process.

Referring to fig. 1, the contact portion 120 has a first surface 121, and the body portion 210 has a second surface 211. One of the first surface 121 and the second surface 211 is provided with a projection p. The "first surface 121" refers to a surface of the contact portion 120 that contacts a corresponding target member, and the "second surface 211" refers to a surface of the body portion 210 that contacts a corresponding target member. It is understood that the "first surface 121" is shaped to cooperate with the contact portion 120, and the "second surface 211" is shaped to cooperate with the body portion 210, which is not particularly limited herein.

It should be noted that the "protrusion p is provided on one of the first surface 121 and the second surface 211" includes the following cases: (1) the second surface 211 of the main body portion 210 is provided with a convex portion p; (2) the first surface 121 of the contact portion 120 is provided with a projection p. That is, one of the first surface 121 and the second surface 211 may be provided with the protrusion p, which may be selected according to actual use situations, and the embodiment of the present application does not specifically limit this. For example, fig. 1 and 2 show a case where the second surface 211 is provided with the projections p, and fig. 3 and 4, which will be illustrated later, show a case where the first surface 121 is provided with the projections p.

The fastening assembly 10 in some embodiments will be further described below by way of example in fig. 1 and 2, in which the second surface 211 is provided with protrusions p.

With reference to fig. 1, the second surface 211 is provided with a protrusion p. Alternatively, the protrusion p and the second fastening member 200 may be an integral structure, and may be manufactured conveniently by direct upsetting or other integral forming manufacturing methods. The protrusion p and the second fastening member 200 may be formed in a separate structure, so that the components are more precise and easy to disassemble, and may be forged or manufactured by other methods.

"projection p" refers to a member projecting from the second surface 211 of the main body 210, and the projection p can be embedded into the surface of the first target member 20 to make the second fastening member 200 in the first direction F ₁ Is fixed, it is understood that the hardness level of the protruding portion p may be greater than that of the first target member 20. In this way, when torque is applied to the first fastening member 100 for fastening, axial force is generated on the second fastening member 200, and under the action of the axial force, the protruding portion p extrudes and deforms the surface of the first target member 20 in contact with the protruding portion p, so that the first target member 20 generates a concave surface which is larger than or equal to the contact area of the protruding portion p and the first target member 20, the protruding portion p is wrapped in the concave surface, the protruding portion p cannot rotate continuously in the axial direction, the degree of freedom of the second fastening member 200 is limited, and the second fastening member 200 cannot rotate along with the first fastening member 100.

Referring to fig. 2, in particular, the rod 110 is arranged along a first direction F ₁ Sequentially penetrate through the first target piece 20 and the second target piece 30, and when the first fastener 100 and the second fastener 200 rotate relatively, the protruding part p can be embedded in the first target piece 20 to limit the degree of freedom of the second fastener 200 in the rotating direction, so that the second fastener 200 can rotate freelyIt no longer follows the first fastener 100. It will be appreciated that the first direction F ₁ Parallel to the axial direction of the shank 110, a first direction F ₁ Perpendicular to the first surface 121 and the second surface 211. So, fine avoidance appears the fastener and follows pivoted problem tightening the in-process.

Thus, the convex portion p makes the contact surface of the second surface 211 of the second fastening member 200 with the first target member 20 rougher, increasing the friction coefficient between the second fastening member 200 and the first target member 20. On this basis, it is more favorable to embed the first target member 20 by the projection p, and the degree of freedom of the second fastening member 200 is restricted, so that the second fastening member 200 no longer follows the rotation of the first fastening member 100.

In order to make the embedding of the protruding part p in the first target member 20 more secure, in some embodiments of the present application, as shown in fig. 1, the protruding part p is provided with a plurality, for example two, three, four or other numbers, and all of the protruding parts p are provided on the second surface 211 around an axis a. Taking fig. 1 as an example, a case where six projections p are provided is illustrated. The method can be set according to actual use conditions, and the method is not particularly limited in the embodiment of the application.

So, make bulge p stress point more through a plurality of bulges p to make bulge p atress more extensive and even, and then in the first target piece 20 of embedding that can be better, difficult not hard up.

In some embodiments of the present application, with continued reference to fig. 1, optionally, all of the projections p are disposed circumferentially about the axis a on the second surface 211 of the second fastener 200. Further, all the protrusions p are disposed at equal intervals on the second surface 211 of the second fastening member 200. For another example, all of the projections p are optionally symmetrically disposed about the axis a on the second surface 211 of the second fastener 200. Further, all the protrusions p may be provided at equal intervals on the second surface 211 of the second fastening member 200. Alternatively, fig. 1 shows a case where the projections p are arranged circumferentially around the axis a at the same pitch. Thus, all the protruding portions p can be uniformly stressed as well as the same stress as the second fastening member 200, and all the protruding portions p can be embedded into the first target member 20 at the same time.

In some embodiments of the present application, perpendicular to the first direction F ₁ The plane of the convex part p is a reference plane, and the shape of the orthographic projection of the convex part p on the reference plane includes at least one of a circle and a polygon, that is, the polygon can be a square, a triangle, a quadrangle, or the like. That is, the shape of the convex portion p may be a hemisphere, a triangular pyramid, a prism, or the like, and may be set according to actual use, which is not limited too much. In this manner, the degree of freedom of the second fastener 200 can be more restricted by designing the shape of the projection p.

In some embodiments of the present application, the contact portion 120 is disposed on the shaft portion 110 along the first direction F ₁ To one end of (a). Further, the shaft portion 110 is detachably coupled to the contact portion 120. The non-detachable first fastening member 100 is more firmly used, and may be a nut and a screw, etc. fixedly connected together, which is not particularly required herein. The detachable first fastening member 100 is more flexible in use, can be used in more occasions, and can be composed of a separate nut and a separate screw, and the like, and is not particularly required.

Further, tightening may be performed by applying torque to the first fastener 100 side using a pneumatic or electric tightening machine or other tightening equipment.

It should be noted that, in the case (2) shown in some of the foregoing embodiments, that is, the first surface 121 of the first fastening member 100 is provided with the protrusion p, reference may be made to the structure shown in fig. 3 and the schematic use diagram shown in fig. 4. The working principle and some ways in implementation related to the embodiments of the present application may refer to the contents of the foregoing embodiments, and are not described herein again.

In use, taking the protrusion p on the second fastener 200 as an example, referring to fig. 2, a pneumatic or electric screw driver or other tightening device is used to apply torque to one side of the first fastener 100 for tightening, and the second fastener 200 is threadedly coupled to the first fastener 100 and rotates with the first fastener 100. When the protruding portion p contacts the first target member 20, the protruding portion p is embedded into the first target member 20 by an axial force generated when the second fastening member 200 is fastened, so that the degree of freedom of the second fastening member 200 is limited, the second fastening member 200 does not rotate along with the first fastening member 100, and the follow-up rotation of the fastening member is prevented.

To sum up, this application embodiment makes the axial force that produces make bulge p imbed corresponding target piece through the fastening in, the degree of freedom of the fastener at bulge p place is restricted to make it no longer follow another fastener and rotate, realized that the fastener no longer follows another fastener and rotates in the tightening process.

In the process of tightening the fastener, the existence of the protruding part p increases the friction coefficient between the second fastener 200 and the first target piece 20, the anti-loosening effect is achieved, when the fastening assembly 10 is fastened to a certain degree, the protruding part p is embedded into the corresponding target piece, the degree of freedom of the fastener where the protruding part p is located is limited, the fastener is enabled not to rotate along with another fastener, and the problem of follow-up rotation of the fastener during tightening is solved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (12)

1. A fastening assembly for fastening a plurality of target members, all of the target members being arranged in a stack in a first direction, comprising:

the first fastener comprises a rod part and a contact part connected with the rod part, and the outer peripheral surface of the rod part is provided with a first thread; and

the second fastening piece comprises a main body part, a through hole is formed in the main body part, a second thread matched with the first thread is arranged on the inner wall of the through hole, and the main body part is detachably connected to the rod part through the through hole;

the contact part is provided with a first surface, the main body part is provided with a second surface, and a convex part is arranged on one of the first surface and the second surface;

when the rod part is sequentially arranged on all the target parts in a penetrating manner along the first direction and the first fastener and the second fastener rotate relatively, the protruding part can be embedded in the target part contacted with the surface where the protruding part is located so as to limit the degree of freedom of the fastener provided with the protruding part in the rotating direction;

the first direction is perpendicular to the first surface and the second surface.

2. The fastening assembly of claim 1, wherein the bulge has a hardness rating that is greater than a hardness rating of a target member with which the surface of the bulge contacts.

3. The fastener assembly of claim 1, wherein said projections are provided in a plurality, all of said projections being disposed about an axis on a surface on which said projections are disposed;

the axis and the first direction are parallel to each other.

4. The fastener assembly of claim 3, wherein all of said projections are disposed circumferentially about said axis on a surface on which said projections are disposed.

5. The fastening assembly of claim 4, wherein all of said projections are equally spaced on a surface on which said projections are located.

6. The fastener assembly of claim 3, wherein all of said projections are symmetrically disposed about said axis on a surface on which said projections are disposed.

7. The fastening assembly of claim 6, wherein all of said projections are equally spaced on a surface on which said projections are located.

8. The fastening assembly according to claim 1, wherein a plane perpendicular to the first direction is a reference plane;

the shape of the orthographic projection of the convex part on the reference surface comprises at least one of a circle and a polygon.

9. The fastening assembly according to any one of claims 1-8, wherein the projection is of unitary construction with the fastener in which it is located; or

The protruding part and the fastener where the protruding part is located are of split type structures.

10. The fastening assembly according to any one of claims 1-8, wherein the stem portion is of unitary construction with the contact portion; or

The rod part and the contact part are of a split structure.

11. The fastener assembly of any one of claims 1 to 8, wherein the contact portion is provided at one end of the stem portion in the first direction.

12. The fastening assembly of any one of claims 1-8, wherein the stem portion is removably connected to the contact portion.

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