CN210531378U - Metal screw and bolt comprising same - Google Patents
Metal screw and bolt comprising same Download PDFInfo
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- CN210531378U CN210531378U CN201921570419.5U CN201921570419U CN210531378U CN 210531378 U CN210531378 U CN 210531378U CN 201921570419 U CN201921570419 U CN 201921570419U CN 210531378 U CN210531378 U CN 210531378U
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Abstract
The utility model discloses a metal screw and bolt that contains it, including screw rod body and connecting portion, metal screw includes two at least connecting portion that set up along the axial interval of screw rod body, and each connecting portion is the polygon in the ascending cross-section of axial of perpendicular to screw rod body to the ascending relative rotation in week of screw rod body between restriction screw rod body and the plastics end cover. The utility model provides a metal screw connects screw rod body and plastics end cover through being polygonized connecting portion, strengthens the reliability and the fastness of the combination of screw rod body and plastics end cover, prevents to dismantle in the use repeatedly when the moment that screw rod body or screw rod body bore is too big, takes place not hard up or the problem that drops between screw rod body and the plastics end cover. Additionally, the utility model also provides a bolt, including metal screw and plastics end cover.
Description
Technical Field
The utility model relates to an automobile manufacturing technical field, in particular to metal screw and contain its bolt.
Background
A conventional screw is a cylinder with a spiral groove cut in the outer surface or a cone with a conical spiral groove cut in the outer surface, so that the end of the non-threaded connection end of a conventional metal screw is round, and the non-threaded connection end, which is generally round in cross section, is used to connect with a plastic end cap. However, when the screw needs to be repeatedly disassembled or the torque applied to the screw is too large, the screw and the plastic end cap are easily loosened or separated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve among the prior art when needs dismantle the screw rod repeatedly or when applying the moment for the screw rod too big, take place not hard up or the problem that drops easily between screw rod and the plastics end cover.
In order to solve the technical problem, the embodiment of the utility model discloses a metal screw, which comprises a screw body and a connecting part, wherein the connecting part is arranged on the outer wall surface of one end part of the screw body and extends along the whole circumferential direction of the screw body, and one end part of the screw body is embedded in a plastic end cover; the metal screw rod adopts an integrated structure;
the metal screw comprises at least two connecting parts which are arranged along the axial direction of the screw body at intervals, and the cross section of each connecting part in the axial direction perpendicular to the screw body is polygonal so as to limit the relative rotation between the screw body and the plastic end cover in the circumferential direction of the screw body.
By adopting the technical scheme, the screw body and the plastic end cover are connected through the polygonal connecting part, so that the installation reliability and firmness between the screw body and the plastic end cover can be effectively ensured. Particularly, the cross-section of connecting portion is the polygon, compares and is the circular shape structure in the tip of prior art's screw rod, the utility model discloses a polygonal connecting portion joint is in the plastics end cover to the reliability and the fastness of the combination of reinforcing screw rod body and plastics end cover in the ascending relative rotation in week of screw rod body between restriction screw rod body and the plastics end cover prevent to dismantle screw rod body or screw rod body in the use repeatedly when the moment that bears is too big, take place not hard up or the problem that drops between screw rod body and the plastics end cover. In addition, the adoption is along the at least two connecting portion of the axial interval setting of screw rod body, can further strengthen the joint strength between screw rod body and the plastics end cover.
According to another embodiment of the present invention, the metal screw disclosed in the embodiments of the present invention, the polygonal shape may be any one of the following shapes: regular hexagon, heptagon or octagon.
Adopt above-mentioned technical scheme, polygonal connecting portion mainly used connects screw rod body and plastics end cover, and then effectively guarantees installation reliability and fastness between screw rod body and the plastics end cover, and consequently the limit of polygonal shape can be as much as possible, but in order to be provided with the manufacturing of the metal screw of connecting portion, polygonal length of side should not too much yet, therefore the polygon can be hexagon, heptagon even octagon. Also, in order to reduce the difficulty of manufacturing and the manufacturing cost, the polygon is a regular polygon structure as much as possible.
According to another embodiment of the present invention, in the metal screw according to the embodiment of the present invention, the at least two connecting portions include a first connecting portion and a second connecting portion, and a cross section of the first connecting portion in the axial direction perpendicular to the screw body has the same shape as a cross section of the first connecting portion in the axial direction perpendicular to the screw body; alternatively, the shape of the cross section of the first connecting portion in the axial direction perpendicular to the screw body is different from the shape of the cross section of the first connecting portion in the axial direction perpendicular to the screw body.
By adopting the technical scheme, for further enhancing the installation reliability and firmness between the screw body and the plastic end cover, at least two connecting parts can be arranged when the connecting parts are adopted to connect the metal screw and the plastic end cover, so as to enhance the connection reliability. Further, the cross-sectional shapes of the at least two polygonal connecting portions may be identical, and the shapes of the at least two polygonal connecting portions may also be set to be different when the requirements of strong installation reliability and firmness are required to be satisfied.
According to the utility model discloses a further concrete embodiment, the utility model discloses a metal screw rod, metal screw rod still include locate the outer wall of screw rod body suddenly and with the spacing portion of the coaxial setting of screw rod body, and spacing portion is located one side of all connecting portions along the axial of screw rod body, and spacing portion is close to the connecting portion of the terminal surface of a tip that is more far away from the screw rod body in at least two connecting portions.
Adopt above-mentioned technical scheme, spacing portion sets up the connecting portion of the terminal surface of a tip of being farther away from the screw rod body in at least two connecting portions for connecting portion all are located the position between spacing portion and the plastics end cover, so that at least two connecting portions all are connected with the plastics end cover, with installation reliability and the fastness between reinforcing screw rod body and the plastics end cover.
According to the utility model discloses a further embodiment, the utility model discloses a metal screw rod that embodiment discloses, the axial interval along the screw rod body sets up between spacing portion and the connecting portion.
By adopting the technical scheme, the limiting parts and the connecting parts are arranged at intervals along the axial direction of the screw body, so that the limiting parts separate the connecting parts from the rest part of the screw body on the screw body and are used for subsequent injection molding with the plastic end cover.
According to the utility model discloses a further concrete implementation mode, the utility model discloses a metal screw rod that embodiment discloses, the side of the connecting portion of keeping away from spacing portion in at least two connecting portions and the terminal surface parallel and level of a tip of screw rod body, the screw rod body that is located between the connecting portion of keeping away from spacing portion in spacing portion and at least two connecting portions most inlays and locates in the plastics end cover.
According to another embodiment of the present invention, the metal screw disclosed in the embodiments of the present invention, D < L1, L1 ═ L2, wherein D is the diameter of the screw body, D is the diameter of the spacing portion, L1 is the maximum dimension of the cross section of the first connecting portion, and L2 is the maximum dimension of the cross section of the second connecting portion.
By adopting the technical scheme, the first connecting part and the second connecting part are consistent in shape and cross section, at the moment, the diameter of the limiting part can be smaller than the maximum size of the cross section of the connecting part, and the limiting part is not influenced to separate the connecting part from the rest part of the screw body on the screw body and is used for subsequent injection molding with the plastic end cover.
According to another embodiment of the present invention, the metal screw according to the embodiments of the present invention, D < L1, L1 < L2, wherein D is the diameter of the screw body, D is the diameter of the limiting portion, L1 is the maximum dimension of the cross section of the first connecting portion, and L2 is the maximum dimension of the cross section of the second connecting portion;
or D < D < L1, L2 < L1, wherein D is the diameter of the screw body, D is the diameter of the limiting part, L1 is the maximum size of the cross section of the first connecting part, and L2 is the maximum size of the cross section of the second connecting part.
By adopting the technical scheme, the shapes of the first connecting part and the second connecting part are inconsistent, and the sizes of the cross sections of the first connecting part and the second connecting part are inconsistent, and specifically, the cross section size of the first connecting part is larger than that of the second connecting part, or the cross section size of the second connecting part is larger than that of the first connecting part. When the cross-sectional dimension of first connecting portion is greater than the cross-sectional dimension of second connecting portion, at this moment, the diameter of spacing portion can be less than the maximum size of the cross-section of second connecting portion, does not influence spacing portion and separates connecting portion and the remainder of screw rod body on the screw rod body for follow-up carry on with plastics end cover injection moulding. When the cross-sectional dimension of the second connecting portion is larger than that of the first connecting portion, at the moment, the diameter of the limiting portion can be smaller than the maximum dimension of the cross section of the first connecting portion, and the limiting portion is not influenced to separate the connecting portion from the rest of the screw body on the screw body and is used for subsequent injection molding with the plastic end cover.
The utility model also provides a bolt, which comprises a plastic end cover and the metal screw rod, wherein the metal screw rod is connected with the plastic end cover through a connecting part so as to limit the relative rotation between the metal screw rod and the plastic end cover in the circumferential direction of the metal screw rod and the relative movement in the axial direction of the metal screw rod; and the plastic end cover is integrally formed at one end of the metal screw rod with the connecting part through injection molding, and a polygonal hole matched with the connecting part is arranged at the part connected with the metal screw rod in the plastic end cover.
Adopt above-mentioned technical scheme, this bolt passes through the connecting portion and the plastics end cover of metal screw is connected, because be provided with polygonal connecting portion on the metal screw, therefore can restrict relative rotation and the axial upward relative movement at the metal screw between metal screw and the plastics end cover in the circumference of metal screw, the reliability and the fastness of the combination of reinforcing metal screw and plastics end cover, when preventing to dismantle the moment that metal screw or metal screw bore repeatedly in the use too big, take place not hard up or the problem that drops between metal screw and the plastics end cover.
According to another embodiment of the present invention, in the bolt disclosed in the embodiments of the present invention, the outer wall surface of the other end portion of the metal screw away from the one end portion has a connecting thread, and the connecting thread is used for being connected to an external bolt hole.
By adopting the technical scheme, the outer wall surface of the other end part of the metal screw rod, which is far away from one end part, is provided with the connecting thread, so that the bolt can be connected with other external bolt holes through the connecting thread on the metal screw rod, and the bolt can be used in any required occasions.
The utility model has the advantages that:
the utility model provides a metal screw connects screw rod body and plastics end cover through being polygonal connecting portion, can effectively guarantee installation reliability and fastness between screw rod body and the plastics end cover. Particularly, the cross-section of connecting portion is the polygon, compares in prior art's circular shape screw rod tip, and polygonal connecting portion joint is in the plastics end cover to the relative rotation in the circumference of screw rod body between restriction screw rod body and the plastics end cover, reliability and the fastness of the combination of reinforcing screw rod body and plastics end cover prevent to dismantle screw rod body or screw rod body in the use repeatedly when the moment that bears is too big, take place not hard up or the problem that drops between screw rod body and the plastics end cover. In addition, the adoption is along the at least two connecting portion of the axial interval setting of screw rod body, can further strengthen the joint strength between screw rod body and the plastics end cover.
Drawings
Fig. 1 is a front view of a metal screw provided in embodiment 1 of the present invention;
fig. 2 is a left side view of a metal screw provided in embodiment 1 of the present invention;
fig. 3 is an axial view of a metal screw provided in embodiment 1 of the present invention;
fig. 4 is a cross-sectional view of a bolt provided in embodiment 2 of the present invention.
Description of reference numerals:
10: a metal screw;
100: a screw body; 110: an end portion;
200: a connecting portion; 210: a first connection portion; 220: a second connecting portion;
300: a limiting part;
20: a bolt;
30: a plastic end cap.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
In order to solve the problem in the prior art that when the screw needs to be repeatedly disassembled or when the torque applied to the screw is too large, the screw and the plastic end cap are easy to loosen or fall off, as shown in fig. 1 to 3, the embodiment of the present embodiment discloses a metal screw 10, which includes a screw body 100 and a connecting portion 200, wherein the connecting portion 200 is disposed on an outer wall surface of one end portion 110 of the screw body 100 and extends along the entire circumferential direction of the screw body 100, and the one end portion 110 of the screw body 100 is used for being embedded in the plastic end cap; the metal screw 10 adopts an integrated structure; the metal screw 10 includes at least two connection portions 200 arranged at intervals in the axial direction of the screw body 100, and each connection portion 200 has a polygonal cross section in the axial direction perpendicular to the screw body 100 to restrict relative rotation between the screw body 100 and the plastic end cap in the circumferential direction of the screw body 100.
Specifically, in this embodiment, the outer wall surface of the end portion 110 of the screw body 100 of the metal screw 10 is provided with the connecting portion 200, and the screw body 100 and the plastic end cap are connected by the polygonal connecting portion 200, so that the installation reliability and firmness between the screw body 100 and the plastic end cap can be effectively ensured. Particularly, connecting portion 200's cross-section is the polygon, compares in the circular shape screw rod of prior art, the polygonal connecting portion 200 joint of this embodiment is in the plastics end cover to the relative rotation in screw rod body 100's circumference between restriction screw rod body 100 and the plastics end cover, reliability and the fastness of the combination of reinforcing screw rod body 100 and plastics end cover prevent to dismantle screw rod body 100 or screw rod body 100 in the use repeatedly when the moment that bears is too big, take place not hard up or the problem that drops between screw rod body 100 and the plastics end cover.
More specifically, at least two connecting portions 200 arranged at intervals in the axial direction of the screw body 100 are adopted, so that the connecting strength between the screw body 100 and the plastic end cover can be further enhanced. The specific number of the connecting portions 200 may refer to an example of 2 connecting portions 200 given in this embodiment, but it should not be understood that only 2 connecting portions 200 may be provided, and the number of the connecting portions 200 may be specifically selected according to actual needs, which is not specifically limited in this embodiment. In addition, the metal screw 10 includes at least two connecting portions 200 arranged at intervals along the axial direction of the screw body 100, the interval between the at least two connecting portions 200 can be set according to actual needs, as long as the arrangement mode of the at least two connecting portions 200 can enhance the connection strength between the screw body 100 and the plastic end cover, which is not specifically limited in this embodiment. More specifically, the metal screw 10 is of an integral structure, and the screw body 100 and the connecting portion 200 are integrally formed, so that the subsequent process of regenerating the connecting portion 200 can be reduced, and the manufacturing cost and time can be reduced.
As shown in fig. 1 to 3, according to another specific embodiment of this embodiment, in the metal screw 10 disclosed in the embodiment of this embodiment, the polygonal shape may be any one of the following shapes: regular hexagon, heptagon or octagon. Specifically, polygonal connecting portion 200 mainly used connects screw body 100 and plastic end cover, and then effectively guarantees installation reliability and fastness between screw body 100 and the plastic end cover, and consequently the limit of polygonal shape can be as much as possible, but in order to be provided with the manufacturing of the metal screw of connecting portion 100, polygonal length of side should not too much yet, therefore the polygon can be hexagon, heptagon even octagon all can. Also, in order to reduce the difficulty of manufacturing and the manufacturing cost, the polygon is a regular polygon structure as much as possible.
As shown in fig. 1 to 3, according to another specific embodiment of the present embodiment, in the metal screw 10 disclosed in the embodiment of the present embodiment, the at least two connection portions 200 include a first connection portion 210 and a second connection portion 220, and a cross section of the first connection portion 210 in the direction perpendicular to the axial direction of the screw body 100 has the same shape as a cross section of the first connection portion 210 in the direction perpendicular to the axial direction of the screw body 100; alternatively, the shape of the cross section of the first connection portion 210 in the direction perpendicular to the axial direction of the screw body 100 is different from the shape of the cross section of the first connection portion 210 in the direction perpendicular to the axial direction of the screw body 100. Specifically, in order to further enhance the installation reliability and firmness between the screw body 100 and the plastic end cap, when the metal screw 100 and the plastic end cap are connected by the connecting portion 200, at least two connecting portions 200 may be provided to enhance the connection reliability. Further, the cross-sectional shapes of the at least two polygonal connecting portions 200 may be identical, or the shapes of the at least two polygonal connecting portions 200 may be set to be different in order to meet the requirements of high installation reliability and firmness.
As shown in fig. 1 to fig. 3, according to another specific embodiment of this embodiment, in the metal screw 10 disclosed in the embodiment of this embodiment, the metal screw 10 further includes a limiting portion 300 protruding from the outer wall surface of the screw body 100 and disposed coaxially with the screw body 100, the limiting portion 300 is located on one side of all the connecting portions 200 along the axial direction of the screw body 100, and the limiting portion 300 is close to one of the at least two connecting portions 200 that is farther from the end surface of one end of the screw body 100, so that the connecting portions 200 are located between the limiting portion 300 and the plastic end cap, so that the at least two connecting portions 200 are connected to the plastic end cap, thereby enhancing the installation reliability and firmness between the screw body 100 and the plastic end cap.
As shown in fig. 1 to 3, according to another specific embodiment of the present embodiment, in the metal screw 10 disclosed in the embodiment of the present embodiment, the limiting portion 300 and the connecting portion 200 are arranged at an interval along the axial direction of the screw body 100, so that the limiting portion 300 separates the connecting portion 200 from the rest of the screw body 100 on the screw body 100 for subsequent injection molding with a plastic end cap.
As shown in fig. 1 to 3, according to another specific embodiment of this embodiment, in the metal screw 10 disclosed in the embodiment of this embodiment, a side surface of one of the at least two connecting portions 200 farthest from the limiting portion 300 is flush with an end surface of one end of the screw body 100, and the screw body 100 located between the limiting portion 300 and the one of the at least two connecting portions 200 farthest from the limiting portion 300 is embedded in the plastic end cap.
As shown in fig. 1 to 3, according to another specific embodiment of the present embodiment, in the metal screw 10 disclosed in the embodiment of the present embodiment, D < L1, and L1 ═ L2, where D is the diameter of the screw body 100, D is the diameter of the position-limiting portion 300, L1 is the maximum dimension of the cross section of the first connecting portion 210, and L2 is the maximum dimension of the cross section of the second connecting portion 220. Specifically, the first connecting portion 210 and the second connecting portion 220 have the same shape and the same cross-sectional size, and at this time, the diameter of the limiting portion 300 may be smaller than the maximum cross-sectional size of the connecting portion 200, so that the limiting portion 300 does not affect the separation of the connecting portion 200 from the rest of the screw body 100 on the screw body 100, and is used for the subsequent injection molding with a plastic end cap.
As shown in fig. 1 to 3, according to another specific embodiment of the present embodiment, the embodiment of the present embodiment discloses a metal screw 10, D < L1, and L1 < L2, wherein D is the diameter of the screw body 100, D is the diameter of the position-limiting portion 300, L1 is the maximum dimension of the cross section of the first connecting portion 210, and L2 is the maximum dimension of the cross section of the second connecting portion 220; or D < D < L1, L2 < L1, wherein D is the diameter of the screw body 100, D is the diameter of the limiting part 300, L1 is the maximum dimension of the cross section of the first connecting part 210, and L2 is the maximum dimension of the cross section of the second connecting part 220.
Specifically, when the cross-sectional shapes of the first connection portion 210 and the second connection portion 220 are different, the cross-sectional sizes of the first connection portion 210 and the second connection portion 220 are also different, and specifically, the cross-sectional size of the first connection portion 210 is larger than the cross-sectional size of the second connection portion 220, or the cross-sectional size of the second connection portion 220 is larger than the cross-sectional size of the first connection portion 210. When the cross-sectional dimension of the first connecting portion 210 is larger than the cross-sectional dimension of the second connecting portion 220, the diameter of the position-limiting portion 300 may be smaller than the maximum dimension of the cross-section of the second connecting portion 220, and the position-limiting portion 300 does not affect the separation of the connecting portion 200 from the rest of the screw body 100 on the screw body 100, and is used for the subsequent injection molding with the plastic end cap. When the cross-sectional dimension of the second connecting portion 220 is larger than the cross-sectional dimension of the first connecting portion 210, the diameter of the position-limiting portion 300 may be smaller than the maximum dimension of the cross-section of the first connecting portion 210, and the position-limiting portion 300 does not affect the separation of the connecting portion 200 from the rest of the screw body 100 on the screw body 100, and is used for the subsequent injection molding with the plastic end cap.
Example 2
As shown in fig. 1 to 4, the present embodiment further provides a bolt 20, which includes a plastic end cap 30, the bolt 20 further includes the metal screw 10 of embodiment 1, the metal screw 10 is connected with the plastic end cap 30 through a connecting portion 200, so as to limit relative rotation between the metal screw 10 and the plastic end cap 30 in the circumferential direction of the metal screw 10 and relative movement between the metal screw 10 and the plastic end cap 30 in the axial direction of the metal screw 10; the plastic end cap 30 is integrally formed at one end of the metal screw 10 having the connecting portion 200 by injection molding, and a polygonal hole matched with the connecting portion 200 is formed at a portion of the plastic end cap 30 connected to the metal screw 10.
Specifically, the bolt 20 is connected to the plastic end cap 30 through the connecting portion 200 of the metal screw 10, and the polygonal connecting portion 200 is disposed on the metal screw 10, so that relative rotation between the metal screw 10 and the plastic end cap 30 in the circumferential direction of the metal screw 10 and relative movement between the metal screw 10 and the plastic end cap 30 in the axial direction can be limited, reliability and firmness of combination between the metal screw 10 and the plastic end cap 30 are enhanced, and the problem that the metal screw 10 and the plastic end cap 30 are loosened or fall off when the metal screw 10 is repeatedly detached or a moment borne by the metal screw 10 is too large in a using process is prevented.
As shown in fig. 2, according to another embodiment of the present invention, the bolt 20 disclosed in the embodiment of the present invention has a connection thread (not shown) on the outer wall surface of the other end of the metal screw 10 away from the one end 110, and the connection thread is used for connecting with an external bolt hole, so that the bolt 20 can be used in any occasion.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A metal screw comprises a screw body and a connecting part, wherein the connecting part is arranged on the outer wall surface of one end part of the screw body and extends along the whole circumferential direction of the screw body, and one end part of the screw body is embedded in a plastic end cover; the method is characterized in that: the metal screw rod adopts an integrated structure;
the metal screw comprises at least two connecting parts which are arranged along the axial direction of the screw body at intervals, and the cross section of each connecting part in the axial direction perpendicular to the screw body is polygonal so as to limit the relative rotation between the screw body and the plastic end cover in the circumferential direction of the screw body.
2. The metal screw of claim 1, wherein the polygonal shape is any one of: regular hexagon, heptagon or octagon.
3. The metal screw according to claim 2, wherein at least two of the connecting portions include a first connecting portion and a second connecting portion, and a shape of a cross section of the first connecting portion in an axial direction perpendicular to the screw body is the same as a shape of a cross section of the first connecting portion in an axial direction perpendicular to the screw body;
alternatively, a shape of a cross section of the first connecting portion in an axial direction perpendicular to the screw body is different from a shape of a cross section of the first connecting portion in an axial direction perpendicular to the screw body.
4. The metal screw according to claim 3, further comprising a stopper protruding from the outer wall surface of the screw body and disposed coaxially with the screw body, wherein the stopper is located on one side of all the connecting portions in the axial direction of the screw body, and the stopper is located close to one of the connecting portions, which is farther from the end surface of the one end portion of the screw body, of at least two of the connecting portions.
5. The metal screw of claim 4, wherein the spacing portion and the connecting portion are spaced apart in an axial direction of the screw body.
6. The metal screw according to claim 5, wherein a side surface of one of the at least two connecting portions, which is the most distant from the stopper portion, is flush with an end surface of the one end portion of the screw body, and the screw body between the stopper portion and the one of the at least two connecting portions, which is the most distant from the stopper portion, is embedded in the plastic end cap.
7. The metal screw of claim 6, wherein D < L1, and L1 ═ L2, wherein D is the diameter of the screw body, D is the diameter of the stopper portion, L1 is the maximum dimension of the cross section of the first connecting portion, and L2 is the maximum dimension of the cross section of the second connecting portion.
8. The metal screw of claim 6, wherein D < L1, L1 < L2, wherein D is a diameter of the screw body, D is a diameter of the stopper portion, L1 is a maximum dimension of a cross section of the first connecting portion, and L2 is a maximum dimension of a cross section of the second connecting portion;
or D is less than D and less than L1, and L2 is less than L1, wherein D is the diameter of the screw body, D is the diameter of the limiting part, L1 is the maximum size of the cross section of the first connecting part, and L2 is the maximum size of the cross section of the second connecting part.
9. A bolt comprising a plastic end cap, wherein the bolt further comprises a metal screw according to any one of claims 1 to 8, the metal screw and the plastic end cap being connected by the connecting portion to restrict relative rotation between the metal screw and the plastic end cap in a circumferential direction of the metal screw and relative movement between the metal screw and the plastic end cap in an axial direction of the metal screw; the plastic end cover is integrally formed in one end part, provided with the connecting part, of the metal screw rod through injection molding, and a polygonal hole matched with the connecting part is formed in the part, connected with the metal screw rod, in the plastic end cover.
10. The bolt according to claim 9 wherein the outer wall surface of the other end of the metal shank remote from the one end has a connecting thread for connection with an external bolt hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570419.5U CN210531378U (en) | 2019-09-20 | 2019-09-20 | Metal screw and bolt comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570419.5U CN210531378U (en) | 2019-09-20 | 2019-09-20 | Metal screw and bolt comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210531378U true CN210531378U (en) | 2020-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921570419.5U Active CN210531378U (en) | 2019-09-20 | 2019-09-20 | Metal screw and bolt comprising same |
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| CN (1) | CN210531378U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029221A1 (en) * | 2021-08-30 | 2023-03-09 | 广东美的制冷设备有限公司 | Chassis assembly and air conditioner |
-
2019
- 2019-09-20 CN CN201921570419.5U patent/CN210531378U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029221A1 (en) * | 2021-08-30 | 2023-03-09 | 广东美的制冷设备有限公司 | Chassis assembly and air conditioner |
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