CN221299766U - Waterproof bolt assembly moulds plastics - Google Patents

Abstract

The utility model provides an injection waterproof bolt assembly, which comprises a bolt body; one end of the bolt body is integrally provided with a first connecting end, and the first connecting end is correspondingly embedded into the opponent piece; the outer peripheral ring of the bolt body far away from the first connecting end is provided with external threads along the axial direction, and a region for installing the metal gasket and the waterproof gasket is formed between the external threads and the first connecting end; the metal gasket is arranged on the bolt body in a riveting mode and is positioned between the first connecting end and the external thread; the waterproof gasket is clamped on the bolt body and is tightly attached to one side, far away from the first connecting end, of the metal gasket. According to the utility model, the anti-rotation effect of the hand piece after being mounted is realized by adopting the first connecting end, the leakage risk generated by a gap between the gasket and the bolt is reduced by combining the riveted metal gasket and the waterproof gasket, the product tightness is improved, the locking connection function of the hand piece on the other side is realized through the external thread when the hand piece is used, and the supporting and fastening functions of the bolt assembly are provided.

Description

Waterproof bolt assembly moulds plastics

Technical Field

The utility model relates to the field of automobile parts, in particular to the technical field of injection molding screws, and specifically relates to an injection molding waterproof bolt assembly.

Background

The existing waterproof combined bolt is internally provided with double washers, namely a metal washer and a waterproof washer, and when the waterproof combined bolt is installed, the metal washer and the waterproof washer are assembled on the bolt in a mode of combining the metal washer and the waterproof washer firstly, so that a gap exists between the washer and the bolt body, and the following problems are caused:

1, a metal gasket and a waterproof gasket on a bolt head structure are required to be additionally assembled and locked by using a driving tool, and the head is rotated along with the nut when the nut is assembled, so that the production efficiency is low;

The gap 2 can cause that the waterproof bolt cannot play a sealing role in installation, and the risk of leakage is caused by gaps existing in the structure;

3, if such risks need to be avoided, a gluing procedure needs to be additionally added during production and assembly, the use efficiency is reduced, and meanwhile, the cost is increased.

The utility model discloses a novel waterproof bolt structure among the prior art, patent number CN206111783U discloses a novel waterproof bolt structure, including bolt head and reinforcement nut, the one end fixedly connected with screw thread post of bolt head, the one end and the reinforcement nut threaded connection of bolt head are kept away from to the screw thread post, the other end fixedly connected with nut of bolt head, one side fixedly connected with shank of bolt head is kept away from to the nut, the fixed orifices has been seted up all around to the nut, one side of nut just is located the side fixedly connected with annular lug of shank of bolt, the cover is equipped with waterproof separation blade on the shank of bolt, the annular groove that uses with annular lug cooperation is seted up to one side of waterproof separation blade. This novel waterproof bolt structure, novel structure and practicality are strong, have reached waterproof effect when the fastening, through setting up waterproof separation blade to the annular groove and the annular lug that set up on the waterproof separation blade combine, have reached waterproof sealing's effect, have further reached waterproof effect under the effect of water sucking plant simultaneously, but this structure is also used for waterproof effect, but is different with this technical scheme's structure, and the application method is different.

The application discloses a three-in-one combined bolt, which relates to the field of fasteners and comprises a bolt body, wherein the bolt body comprises a nut and a screw, the nut is provided with a hexagonal groove, the screw comprises a polished rod part and a threaded part, the polished rod part is sleeved with a spring washer and a flat washer, the diameter of the threaded part is larger than the inner diameters of the spring washer and the flat washer, a matched nut is inserted into the hexagonal groove, the inner diameter of the matched nut is identical to the diameter of the threaded part, and the matched nut is slidably connected into the hexagonal groove.

The prior art discloses a fastener with a PN expansion water-stop rubber ring, and patent number CN214331117U discloses a fastener with a PN expansion water-stop rubber ring, which comprises a base block and a reinforcing unit; base block: the lower surface is equipped with the stock, the outward facing cooperation of stock cup joints installs the lantern ring, lateral part sealing groove has been seted up to the inner chamber side upper end of lantern ring, be equipped with lateral part sealing rubber ring in the lateral part sealing groove, this fastener that has PN inflation sealing rubber ring can promote the overall stability of stock through locating the inside reinforcement unit of stock, the threaded connection of the external screw thread that sets up through the internal thread that the inner chamber side of lantern ring set up and stock lateral surface set up can make stock and lantern ring carry out the cooperation installation, can make this fastener's fixed mounting more firm from this, can carry out the stagnant water to the top and the bottom of stock through lateral part sealing rubber ring and top sealing rubber ring for PN inflation sealing rubber ring and handle, can avoid the screw gap to go into water from this, thereby promote the stagnant water effect of this fastener, but the waterproof construction that this structure proposed is different with this technical scheme, and have obvious difference.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide an injection-molded waterproof bolt assembly for solving the difficulties of the prior art.

To achieve the above and other related objects, the present utility model provides an injection-molded waterproof bolt assembly comprising:

A bolt body 1;

The first connecting end 2 is integrally arranged at one end of the bolt body 1, and the first connecting end 2 is correspondingly embedded into the counterpart;

An external thread 3, wherein the external thread 3 is arranged on the outer peripheral ring of the bolt body 1 far away from the first connecting end 2 along the axial direction, and a region for installing a metal gasket 4 and a waterproof gasket 5 is formed between the external thread 3 and the first connecting end 2;

a metal washer 4, wherein the metal washer 4 is installed on the bolt body 1 in a riveting manner and is positioned between the first connecting end 2 and the external thread 3;

The waterproof gasket 5 is clamped on the bolt body 1, and is tightly attached to one side, away from the first connecting end 2, of the metal gasket 4.

Further, the first connection end 2, the external thread 3 and the metal washer 4 are coaxially arranged.

Further, the metal gasket 4 and the waterproof gasket 5 are arranged in a ring shape.

In this technical scheme, in order to avoid the problem that the combination bolt has revealing, form waterproof structure, install metal washer 4 through the riveted mode on the bolt body 1 of the waterproof bolt subassembly of moulding plastics with opponent installation, waterproof washer 5 in addition of cooperation metal washer 4, waterproof washer 5 is installed on the side that metal washer 4 kept away from first link 2 according to the structure of opponent, apply pressure to waterproof washer 5 through metal washer 4, support and establish on the below structure of opponent, because install through the riveted mode between metal washer 4 and the waterproof bolt of moulding plastics, can avoid forming the problem in clearance between the two, the soft combination of waterproof washer 5 in addition, form the waterproof bolt of moulding plastics, metal washer 4 and waterproof washer 5 and the sealing environment between the opponent, the risk of revealing because there is the gap to produce between washer and the bolt has been reduced, the product leakproofness has been increased.

According to a preferred embodiment, the first connection end 2 is arranged in a polygonal configuration.

Further, according to the actual structure of the accommodating area of the opponent, in the present technical solution, the first connection end 2 is preferably configured in a square structure.

In this technical scheme, during the installation, the bolt assembly needs to be to joining in marriage the installation in opponent, after the installation, can be further install the accessory of opposite side on the external screw thread 3 of bottom, consequently will prevent the pivoted condition of bolt assembly and take place when the installation, for this reason, set up into quadrilateral structure with first link 2, can preset the card and go into the inslot of the corresponding shape of opponent and fix, need not extra equipment, and have locking effect.

According to a preferred embodiment, the bolt body 1 comprises in the axial direction:

The two ends of the bolt rod 11 are respectively integrally provided with a first connecting end 2 and a second connecting end 12, and the outer diameter of the bolt rod 11 is smaller than that of the first connecting end 2;

A second connection end 12, wherein a metal gasket 4 and a waterproof gasket 5 are arranged on the second connection end 12;

An externally threaded mounting end 13, said externally threaded mounting end 13 being arranged below the second connection end 12.

Further, the bolt shank 11, the second connecting end 12 and the externally threaded mounting end 13 are coaxially disposed.

In this technical scheme, because the structure that corresponds the card and go into waterproof bolt subassembly on the opponent is "worker" font, therefore, the part that corresponds the male at bolt body 1 has also made the syllogic, first link 2, bolt pole 11 and second link 12 complex structure, can make the first link 2 of installing at the bolt pole 11 top play the spacing effect of installation, can also inject the mounted position of metal packing ring 4 and waterproof packing ring 5 that is located on the second link 12, reach accurate quick counterpoint effect, also play the assurance of waterproof effect in the later stage actual operation.

According to a preferred embodiment, the outer diameter of the metal gasket 4 is smaller than the outer diameter of the waterproof gasket 5.

In the technical scheme, a double-layer gasket structure is adopted, namely, a metal gasket 4 is arranged on the upper part, and a waterproof gasket 5 is arranged on the lower part, because the metal gasket 4 does not have elasticity, a riveting mode is adopted to realize the tight combination with the bolt body 1, but a tight structure is also needed between the metal gasket 4 and the opponent part, and a sleeved through hole structure is also arranged between the opponent part and the bolt body 1, so that the waterproof gasket 5 capable of elastically deforming is adopted, and on one hand, the waterproof effect that the deformation cannot be realized between the metal gasket 4 and the opponent part plane structure is achieved through the waterproof gasket 5; on the other hand, the external diameter of the waterproof gasket 5 is larger than that of the waterproof gasket 5, so that the waterproof gasket can support the metal gasket 4, meanwhile, the contact area with the opposite parts below can be formed, the sealing performance is effectively improved, and meanwhile, the support effect for the anti-rotation effect can be provided.

According to a preferred embodiment, the outer diameter of the second connection end 12 is smaller than the outer diameter of the bolt shank 11.

Further, the outer diameters of the metal washer 4 and the waterproof washer 5 are set larger than the outer diameters of the bolt shank 11 and the male screw mounting end 13.

In this technical scheme, metal washer 4 installs on bolt body 1 through the riveted mode, in addition, be provided with "worker" font draw-in groove structure to the opponent again, before not installing to the opponent, need with the accurate riveting of metal washer 4 on bolt body 1, for this reason combines above-mentioned two requirements, the external diameter of bolt rod 11 is greater than the external diameter setting of second link 12, after second link 12 riveting metal washer 4, play spacing effect through bolt rod 11, avoid the condition emergence of installation transition, improve the efficiency of quick installation.

According to a preferred embodiment, the top of the metal washer 4 is in close contact with the lower surface of the bolt shank 11.

Further, the top of the metal gasket 4 is attached to the lower surface of the middle clamping groove of the hand piece.

In this technical scheme, metal washer 4 has adopted the mode of riveting with bolt body 1, can avoid the gap between the inside through-hole of bolt body 1 and the bolt body 1 circumference, but because the external diameter of second link 12 is less than the external diameter of bolt pole 11, can exist step structure at the junction of the top of second link 12 and bolt pole 11, for this reason, only with the inseparable laminating setting of metal washer 4 at the lower surface of bolt pole 11, just can effectively reduce the clearance between the structure, improved the product leakproofness.

According to a preferred embodiment, the central connecting hole of the waterproof gasket 5 is sleeved on the riveted end of the metal gasket 4.

Further, the thickness of the waterproof gasket 5 is greater than the thickness of the metal gasket 4.

In this technical scheme, waterproof washer 5 play the basis of making up gap and supporting opponent effect, designs into the thickness of waterproof washer 5 to be greater than the thickness of metal washer 4, can also establish the riveting end cover of metal washer 4 in waterproof washer 5, plays the guard action to metal washer 4, avoids the riveting end to take place the damage when installing between waterproof bolt and opponent, leads to the decline of waterproof performance.

According to a preferred embodiment, the length of the second connection end 12 is greater than the sum of the thicknesses of the waterproof gasket 5 and the metal gasket 4.

In this technical scheme, the second link 12 provides the region of installation for waterproof packing ring 5 and metal packing ring 4, simultaneously provides sufficient riveting length for metal packing ring 4, and waterproof packing ring 5 and metal packing ring 4 are located the opponent after installing to the opponent, and after the length of second link 12 was slightly greater than waterproof packing ring 5 and metal packing ring 4's thickness, can provide effectual installation space for waterproof packing ring 5 and metal packing ring 4, is the prerequisite of guarantee sealed effect, also can obtain sufficient adaptability according to the different sizes of product equally, with after the opponent is installed to the opponent, do not influence the bottom and be connected with external screw thread 3 to the opponent.

According to a preferred embodiment, the side of the bottom of the bolt body 1 remote from the first connection end 2 is integrally axially extended to form a tail end 6 having an outer diameter smaller than the external thread 3.

Further, the outer peripheral surface of the trailing end 6 is provided in a structure with a smooth surface.

In this technical scheme, the mode that adopts the reducing at the end of bolt body 1 forms tail end 6 can improve the installation effectiveness of bolt, in the installation, owing to set up to be smooth surface on the periphery of tail end 6, can also avoid taking place the damage of inner wall when realizing leading-in fast to the accessory, improves installation effectiveness and reduction in production cost.

According to a preferred embodiment, the external thread mounting end 13 is provided with chamfer 7 at both circumferential ends.

Further, chamfer angles are arranged around the first connecting end 2.

In the technical scheme, the metal gasket 4, the waterproof gasket 5 and the bottom opponent piece are sleeved through the tail end 6 and the external thread mounting end 13, and the structure of the chamfer 7 can effectively avoid hard contact in the sleeving and inserting process on the basis of guiding the opponent piece, so that the influence on the waterproof performance caused by the damage of a product is prevented; likewise, the periphery of the first connecting end 2 is provided with a chamfer, the first connecting end 2 is used for being inserted into an opponent piece in use, and in the moving process, the polygonal first connecting end 2 can be prevented from cutting the inner wall of the opponent piece in the sliding installation process through the chamfer, so that the anti-rotation function of the first connecting end 2 is affected.

The utility model adopts the polygonal first connecting end to realize the anti-rotation effect after the hand piece is installed, and the riveting metal gasket and the waterproof gasket are combined on the bolt body, so that the leakage risk caused by gaps between the gasket and the bolt is reduced, the tightness of the product is improved, the hand piece on the other side can realize the locking connection function through external threads when in use, and the better supporting and fastening functions of the bolt component are provided.

Preferred embodiments for carrying out the present utility model will be described in more detail below with reference to the attached drawings so that the features and advantages of the present utility model can be easily understood.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of another view of the present utility model;

FIG. 3 shows a top view of the present utility model;

FIG. 4 shows a bottom view of the present utility model;

FIG. 5 shows a front view of the present utility model;

FIG. 6 is an enlarged schematic view showing a three-dimensional structure of a bolt body according to the present utility model;

Description of the reference numerals

1. The bolt body is provided with a plurality of bolts,

11. The bolt rod is provided with a plurality of bolts,

12. A second connecting end of the first connecting end,

13. An external thread mounting end;

2. A first connection end;

3. An external thread;

4. the metal gasket is provided with a metal seal,

5. A waterproof gasket;

6. tail end;

7. Chamfering.

Detailed Description

In order to make the objects, technical solutions and advantages of the technical solutions of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present utility model. Like reference numerals in the drawings denote like parts. It should be noted that the described embodiments are some, but not all embodiments of the present utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Possible embodiments within the scope of the utility model may have fewer components, have other components not shown in the drawings, different components, differently arranged components or differently connected components, etc. than the examples shown in the drawings. Furthermore, two or more of the elements in the figures may be implemented in a single element or a single element shown in the figures may be implemented as multiple separate elements.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

The utility model provides an injection waterproof bolt assembly which is used for an automobile installation waterproof piece, the type of the hand piece used by the injection waterproof bolt assembly is not limited, but the structure of the injection waterproof bolt assembly is particularly suitable for installation of an automobile sheet metal piece.

In general, the injection-molded waterproof bolt assembly according to the present utility model mainly includes a bolt body 1, a first connection end 2, an external thread 3, a metal washer 4, and a waterproof washer 5. Among them, reference can be made to fig. 1, which shows the arrangement relationship of a bolt body 1, a first connection end 2, an external thread 3, a metal washer 4 and a waterproof washer 5.

In order to achieve the purpose of sealing performance of the bolt assembly, the prior art solves the problems that when the bolt assembly is installed, a metal gasket and a waterproof gasket are assembled on a bolt in a mode of combining the metal gasket and the waterproof gasket, which causes a gap between the gasket and a bolt body, and the following problems are caused: the metal gasket and the waterproof gasket on the bolt head structure need to be additionally assembled and locked by using a driving tool, and the head can rotate along with the nut when the nut is assembled, so that the production efficiency is low; the gap can cause that the waterproof bolt cannot play a sealing role in installation, and the risk of leakage exists due to the gap existing in the structure of the waterproof bolt; if need avoid this kind of risk, need additionally increase the rubber coating process when producing the assembly, availability factor reduces, can also lead to the problem that the cost risees simultaneously, and for this reason, among the technical scheme that this embodiment provided, adopted polygonal first link 2 to have realized with the anti-rotation effect after to the fitting, combine riveting metal washer 4 and waterproof washer 5 on bolt body 1, the structure of combination has reduced because the packing ring has the produced risk of revealing of gap between the bolt, the product leakproofness has been increased, the fitting of opposite side realizes locking connection function through external screw thread 3 when using, the better support and the fastening effect of bolt assembly have been provided.

As shown in fig. 1, one end of the bolt body 1 is integrated and coaxially provided with a first connection end 2, the first connection end 2 is correspondingly embedded in the opponent setting, an external thread 3 is arranged on the outer circumference of the bolt body 1 away from the first connection end 2 along the axial direction for connecting the opponent and the fastening nut on the other side, an area for installing a metal washer 4 and a waterproof washer 5 is formed between the external thread 3 and the first connection end 2, wherein the metal washer 4 is installed on the bolt body 1 in a riveting manner, and the waterproof washer 5 is clamped on the bolt body 1 and is tightly attached on one side of the metal washer 4 away from the first connection end 2.

When the structure is used, in order to avoid the problem that the combined bolt leaks, a waterproof structure is formed, the metal gasket 4 is installed on the bolt body 1 of the injection waterproof bolt assembly installed with the opponent through a riveting mode, the waterproof gasket 5 is arranged in cooperation with the metal gasket 4, the waterproof gasket 5 is installed on one side, far away from the first connecting end 2, of the metal gasket 4 according to the structure of the opponent, pressure is applied to the waterproof gasket 5 through the metal gasket 4, the waterproof gasket is propped against the lower structure of the opponent, the problem that a gap is formed between the metal gasket 4 and the injection waterproof bolt can be avoided due to the installation of the metal gasket 4 and the injection waterproof bolt through the riveting mode, and in addition, the soft combination of the waterproof gasket 5 forms the sealing environment among the injection waterproof bolt, the metal gasket 4, the waterproof gasket 5 and the opponent, so that the leakage risk caused by gaps between the gasket and the bolt is reduced, and the sealing performance of a product is improved.

As described above, according to the actual structure of the accommodation area of the opponent, in this technical solution, the first connection end 2 is preferably configured as a square structure, during installation, the bolt assembly needs to be installed in the opponent in a matching manner, after installation, the mating member on the other side is further installed on the external thread 3 at the bottom, so that the situation that the bolt assembly rotates is prevented during installation, and therefore, the first connection end 2 is configured as a square structure, and can be preset to be clamped into the groove of the corresponding shape of the opponent for fixing without additional assembly, and the locking effect is achieved.

What needs to be specifically explained is the structure of the bolt body 1, along the axial direction, the inside of this structure is provided with bolt pole 11, second link 12 and external screw thread installation end 13 coaxially, and the top of bolt pole 11 is used for connecting first link 2, and the bottom is used for connecting second link 12, and second link 12 is used for installing metal packing ring 4 and waterproof packing ring 5, and external screw thread installation end 13 sets up in the below of second link 12 for connect the opponent piece and the fastening nut that lie in the below.

It can be seen from the figure that, structurally, the first connecting end 2, the bolt rod 11 and the second connecting end 12 are made into a three-section structure, and the reason is that the structure on the opposite hand piece correspondingly clamped into the waterproof bolt assembly is in an I shape, so that the first connecting end 2 arranged at the top of the bolt rod 11 has the effect of mounting limitation, the mounting positions of the metal gasket 4 and the waterproof gasket 5 on the second connecting end 12 can be limited, the effect of accurate and rapid alignment is achieved, and the waterproof effect is ensured in the later actual operation.

Considering that a double-layer gasket structure is adopted, namely, a structure that a metal gasket 4 is arranged on the upper side and a waterproof gasket 5 is arranged on the lower side, because the metal gasket 4 does not have elasticity, a riveting mode is adopted to realize the tight combination with a bolt body 1, but a tight structure is also needed between the metal gasket 4 and an opponent piece, and a sleeved through hole structure is also arranged between the opponent piece and the bolt body 1, therefore, the waterproof gasket 5 which can be elastically deformed is selected, and on one hand, the waterproof effect that the deformation can not be realized between the metal gasket 4 and the opponent piece plane structure is achieved through the waterproof gasket 5; on the other hand, the external diameter of the waterproof gasket 5 is larger than that of the waterproof gasket 5, so that the waterproof gasket can support the metal gasket 4, meanwhile, the contact area with the opposite parts below can be formed, the sealing performance is effectively improved, and meanwhile, the support effect for the anti-rotation effect can be provided.

On this basis, the thickness of waterproof washer 5 is greater than the thickness of metal washer 4, and the purpose is to establish the center connecting hole cover of waterproof washer 5 on the riveting end of metal washer 4, and on waterproof washer 5 played the basis of making up gap and supporting opponent effect, can also establish the riveting end cover of metal washer 4 in waterproof washer 5, play the guard action to metal washer 4, avoid the riveting end to take place the damage when installing between waterproof bolt and opponent, lead to the decline of waterproof performance.

Regarding the structural relation between the double-layer washer and the second connecting end 12, on one hand, in terms of the outer diameter dimension, the outer diameter of the second connecting end 12 is required to be smaller than the outer diameters of the bolt rod 11 and the external thread mounting end 13, but the outer diameters of the metal washer 4 and the waterproof washer 5 are both larger than the outer diameters of the bolt rod 11 and the external thread mounting end 13, so that the metal washer 4 is mounted on the bolt body 1 in a riveting manner, and the opposite piece is provided with an I-shaped clamping groove structure, and the metal washer 4 needs to be accurately riveted on the bolt body 1 before being mounted on the opposite piece, therefore, in combination with the requirements, the outer diameters of the bolt rod 11 and the external thread mounting end 13 are larger than the outer diameter of the second connecting end 12, after the metal washer 4 is riveted on the second connecting end 12, the bolt rod 11 and the external thread mounting end 13 play a limiting role, the occurrence of the condition of mounting transition is avoided, and the quick mounting efficiency is improved;

On the other hand, in terms of the length dimension, the length of the second connecting end 12 is greater than the sum of the thicknesses of the waterproof gasket 5 and the metal gasket 4, because the second connecting end 12 provides a mounting area for the waterproof gasket 5 and the metal gasket 4, and provides a sufficient riveting length for the metal gasket 4, and the waterproof gasket 5 and the metal gasket 4 are positioned in the opponent after being mounted with the opponent, and after the length of the second connecting end 12 is slightly greater than the thicknesses of the waterproof gasket 5 and the metal gasket 4, an effective mounting space can be provided for the waterproof gasket 5 and the metal gasket 4, which is a precondition for guaranteeing the sealing effect, and also can obtain sufficient adaptability according to different dimensions of products, and after the opponent is mounted with the opponent, the connection of the bottom opponent with the external thread 3 is not affected.

On this basis, the top of metal packing ring 4 closely laminates with the lower surface of bolt bar 11, and the laminating sets up between the lower surface of draw-in groove in the middle of top and the opponent, and although the mode of riveting with bolt body 1 has been adopted to metal packing ring 4, although can avoid the gap between the inside through-hole of bolt body 1 and the bolt body 1 circumference, but because the external diameter of second link 12 is less than the external diameter of bolt bar 11, can exist step structure at the top of second link 12 and the junction at bolt bar 11, for this reason, only with the inseparable laminating setting of metal packing ring 4 at the lower surface of bolt bar 11, just can effectively reduce the clearance between the structure, improved the product leakproofness.

Preferably, the bottom of the bolt body 1 is far away from the tail end 6 of the external thread 3 formed by integrally axially extending one side of the first connecting end 2, the tail end 6 is formed at the tail end of the bolt body 1 in a diameter-reducing mode, so that the installation efficiency of the bolt can be improved, in the installation process, the smooth surface is arranged on the periphery of the tail end 6, the quick introduction of accessories is realized, the damage to the inner wall can be avoided, the installation efficiency is improved, and the production cost is reduced.

When the waterproof connecting device is used, the first connecting end 2 and the external thread mounting end 13 are structurally provided with guide structures, the metal gasket 4, the waterproof gasket 5 and the bottom opponent piece are sleeved through the tail end 6 and the external thread mounting end 13, and the chamfer 7 can be adopted to guide the opponent piece into the structure so as to effectively avoid hard contact in the sleeving insertion process, and prevent the product from being damaged to cause the influence on the waterproof performance; likewise, the periphery of the first connecting end 2 is provided with a chamfer, the first connecting end 2 is used for being inserted into an opponent piece in use, and in the moving process, the polygonal first connecting end 2 can be prevented from cutting the inner wall of the opponent piece in the sliding installation process through the chamfer, so that the anti-rotation function of the first connecting end 2 is affected.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. An injection molded waterproof bolt assembly, comprising:

A bolt body (1);

The first connecting end (2) is integrally arranged at one end of the bolt body (1), and the first connecting end (2) is correspondingly embedded into the opposite piece;

The outer thread (3), the outer circumference of the bolt body (1) far away from the first connecting end (2) is provided with the outer thread (3) along the axial direction, and a region for installing the metal gasket (4) and the waterproof gasket (5) is formed between the outer thread (3) and the first connecting end (2);

The metal gasket (4) is arranged on the bolt body (1) in a riveting mode and is positioned between the first connecting end (2) and the external thread (3);

the waterproof gasket (5) is clamped on the bolt body (1), and is tightly attached to one side, far away from the first connecting end (2), of the metal gasket (4).

2. Injection-molded waterproof bolt assembly according to claim 1, characterized in that the first connection end (2) is arranged in a polygonal configuration.

3. Injection-molded waterproof bolt assembly according to claim 2, characterized in that the bolt body (1) comprises in axial direction:

The bolt comprises a bolt rod (11), wherein a first connecting end (2) and a second connecting end (12) are respectively integrally arranged at two ends of the bolt rod (11), and the outer diameter of the bolt rod (11) is smaller than that of the first connecting end (2);

the second connecting end (12), the second connecting end (12) is provided with a metal gasket (4) and a waterproof gasket (5);

and the external thread installation end (13) is arranged below the second connecting end (12).

4. An injection molded waterproof bolt assembly according to claim 3, wherein the outer diameter of the metal washer (4) is smaller than the outer diameter of the waterproof washer (5).

5. Injection-moulded waterproof bolt assembly according to claim 4, characterized in that the outer diameter of the second connection end (12) is smaller than the outer diameter of the bolt shank (11).

6. Injection-molded waterproof bolt assembly according to claim 5, characterized in that the top of the metal washer (4) is in close contact with the lower surface of the bolt shank (11).

7. Injection-molded waterproof bolt assembly according to claim 6, characterized in that the central connecting hole of the waterproof washer (5) is sleeved on the riveted end of the metal washer (4).

8. Injection molded waterproof bolt assembly according to claim 6, characterized in that the length of the second connection end (12) is greater than the sum of the thicknesses of the waterproof gasket (5) and the metal gasket (4).

9. Injection-moulded waterproof bolt assembly according to claim 6, characterized in that the side of the bottom of the bolt body (1) remote from the first connection end (2) is integrally axially extended to form a tail end (6) with an outer diameter smaller than the external thread (3).

10. Injection-moulded waterproof bolt assembly according to claim 6, characterized in that the external thread mounting end (13) is provided with chamfer (7) at both circumferential ends.