CN217653049U

CN217653049U - Bolt sealing structure

Info

Publication number: CN217653049U
Application number: CN202121104861.6U
Authority: CN
Inventors: 李刚; 毕研亮; 王士鹏
Original assignee: Shandong Longertek Technology Co Ltd
Current assignee: Shandong Longertek Technology Co Ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2022-10-25
Anticipated expiration: 2031-05-19

Abstract

The utility model provides a bolt sealing structure, including bolt head and screw rod to and bolt housing cap and bolt sleeve pipe, the bolt sleeve pipe with the screw rod suit and the parcel of bolt head below the bolt head, bolt housing cap suit is in outside the bolt housing pipe, the bolt housing cap with set up O type circle II for waterproof sealing between the bolt sleeve pipe. The utility model provides a bolt sealing structure, seal the bolt head inside bolt sleeve and bolt sleeve, the faying face between bolt sleeve and the bolt sleeve is lower than the bolt sleeve end, effectively avoids the rainwater to enter the usage space along bolt and bolt hole; through the double sealing rings, the air pressure change range which can be borne by the sealing structure is larger, and external pressure fluctuation is prevented from being transmitted to a use space through the bolt holes; o type circle II installs in the ditch inslot on the bolt sleeve pipe, effectively reduces sealing member ageing rate, increase of service life.

Description

Bolt sealing structure

Technical Field

The utility model belongs to the technical field of the sealed technique of fastener and specifically relates to a bolt seal structure.

Background

The bolt connection is one of the most commonly used mechanical connection modes, plays an important role in the aspect of component connection, and in order to solve the sealing and waterproof problems between bolts and components, the bolts can be sealed in many ways, for example, the existing conventional bolt sealing and waterproof mode shown in fig. 1 generally adopts a combined structure of an O-ring I3, a cushion block 7, a combined seal ring 6, a flat cushion 5, an elastic cushion 4 and a bolt, but the measures above still have many problems in the use process: 1) The combined sealing ring is in interference fit with the bolt, and when the combined sealing ring is sleeved, the thread easily damages the inner rubber ring of the combined sealing ring;

2) The combined sealing ring has small change range of bearing gas pressure, and is easy to leak gas; 3) When the bolt is screwed down, the flat gasket rotates to damage the rubber ring in the combined sealing ring; 4) The cushion block can rotate together with the bolt in the installation process, and the O-shaped ring at the bottom is damaged. When the bolt sealing structure shown in fig. 2 is adopted, the rubber ring in the gasket is easy to age under the influence of illumination because the metal part of the combined sealing ring is small. In case of the above problems, the sealability and waterproof function between the bolt and the member cannot be effectively secured

Therefore, how to improve the above disadvantages and shortcomings to better meet the needs of usage is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses main aim at solves above-mentioned problem and not enough, provides a can improve leakproofness and waterproof nature's bolt seal structure between bolt and component.

In order to achieve the above object, the utility model provides a bolt sealing structure, its technical scheme is:

the utility model provides a bolt seal structure, includes bolt head and screw rod, still includes bolt housing cover and bolt sleeve pipe, the bolt sleeve pipe with the screw rod suit and the parcel of bolt head below the bolt head, the bolt housing cover suit is in outside the bolt sleeve pipe, the bolt housing cover with set up waterproof sealing between the bolt sleeve pipe and use O type circle II.

Further, the cross section of the bolt sleeve is generally L-shaped, and the side wall of the bottom edge of the L-shaped bottom edge is in close contact with the screw rod.

Furthermore, an elastic cushion is arranged between the top surface of the bottom edge of the L shape and the bottom of the bolt head.

Further, the bottom of the bolt sleeve is provided with a clamping groove, and an O-shaped ring I for sealing and water proofing is arranged in the clamping groove.

Further, the bolt sleeve comprises an installation platform, and a groove for installing the O-shaped ring II is formed in the top surface of the installation platform.

Further, the bottom of the bolt sleeve cover is in hard contact with the top surface of the mounting table.

Further, the diameter of the outer ring of the O-shaped ring II is smaller than that of the outer wall of the bolt sleeve cover.

Furthermore, the joint surface of the bolt sleeve cover and the bolt sleeve is lower than the end part of the bolt sleeve.

Further, the bolt sleeve cover mounting surface is a standard hexagon.

Furthermore, a plurality of anti-rotation surfaces for preventing the bolt sleeve from being linked with the bolt sleeve cover are processed on the outer circle of the bolt sleeve.

To sum up, compared with the prior art, the bolt sealing structure provided by the utility model has the advantages that the first waterproof sealing is realized by arranging the bolt sleeve and the bolt sleeve cover which are mutually sleeved and arranging the O-shaped ring II for sealing and waterproofing between the bolt sleeve and the bolt sleeve cover; the joint surface of the bolt sleeve and the bolt sleeve cover is lower than the end part of the bolt sleeve, so that rainwater cannot accumulate and enter the sealing assembly, the rainwater is effectively prevented from entering a use space along the bolt and the bolt hole, and a second sealing is realized; an O-shaped ring I is arranged between the bolt sleeve and the mounting frame to realize third sealing, triple sealing is adopted for water prevention, the change range of the air pressure which can be borne is larger, the air tightness requirement of the use space is met, and external pressure fluctuation is prevented from being transmitted into the use space through the bolt hole; the O-shaped ring I and the O-shaped ring II are arranged in the clamping groove or the groove, so that the sealing element can be prevented from being extruded and damaged when the sealing device is installed and used; the influence of sunlight on the O-shaped ring II can be avoided, the aging rate of the sealing element is reduced, and the service life of the bolt sealing structure is prolonged.

Description of the drawings:

FIG. 1: a bolt sealing structure in the prior art is shown as a first diagram;

FIG. 2 is a schematic diagram: a schematic diagram of a combined sealing ring structure in the prior art is shown as II;

FIG. 3: the utility model provides a cross section of a bolt sealing structure;

FIG. 4: the utility model provides a schematic diagram of a bolt sealing structure;

the bolt comprises a bolt head 1, a screw rod 2, an O-shaped sealing ring I3, an elastic pad 4, a flat pad 5, a combined sealing ring 6, a cushion block 7, a bolt sleeve cover 8, a bolt sleeve 9, an O-shaped sealing ring II10 and an installation frame 11.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The utility model provides a bolt sealing structure, including bolt head 1 and screw rod 2, still include bolt housing cap 8 and bolt sleeve 9,

bolt sleeve

9 and 2 suits of screw rod of 1 below of bolt head wrap up bolt head 1, and 8 suits of bolt housing cap are outside bolt sleeve 9, set up waterproof sealing with O type circle II10 between bolt housing cap 8 and the bolt sleeve 9.

As shown in fig. 3 and 4, the bolt sealing structure provided by the present embodiment includes a bolt head 1, a screw 2, an O-ring I3, an elastic washer 4, a bolt sleeve cover 8 and a bolt sleeve 9. The bolt sleeve 9 is sleeved on the screw rod 2, the cross section of the bolt sleeve is generally L-shaped, the side wall of the L-shaped bottom edge is in close contact with the screw rod 2, the elastic pad 4 is arranged between the top wall and the bolt head 1, the upper surface and the lower surface of the elastic pad 4 are respectively pressed against the bottom of the bolt head 1 and the top of the L-shaped bottom edge of the bolt sleeve 9, the close contact is realized, the L-shaped vertical edge is wrapped outside the bolt head 1, and the top of the vertical edge is basically flush with the bolt head 1. The bolt sleeve cover 8 is of an n-shaped structure, is sleeved outside the bolt sleeve 9 and wraps the bolt head 1 and the bolt sleeve 9 from top to bottom, so that the bolt head 1 is sealed and waterproof, and accumulated water is prevented from entering from a gap between the bolt head 1 and the bolt sleeve 9.

O type circle I3 sets up in bolt sleeve 9's bottom, with bolt sleeve 9 in close contact with, and bolt sleeve 9 bottom outer wall diameter is greater than O type circle I3's outer lane diameter, can protect O type circle I3, for the installation of being convenient for, prevent that O type circle I3 from droing, set up the draw-in groove (not sign in the picture) that holds O type circle I3 in bolt sleeve 9's bottom, because the draw-in groove carries on spacingly to O type circle I3's position, prevent O type circle I3 extrusion damage in the installation, and simultaneously, O type circle I3 and draw-in groove interference fit, be located between the contact surface of bolt sleeve 9 and installation frame 11, prevent that ponding from getting into from the gap between the two. For further waterproof sealing, be provided with O type circle II10 between the suit faying face of bolt sleeve pipe 9 and bolt sleeve pipe 8, prevent ponding from the gap infiltration of bolt sleeve pipe 8 and bolt sleeve pipe 9 faying face, preferably, integrated into one piece has the mount table on the outer wall of bolt sleeve pipe 9, make the cross-section of bolt sleeve pipe 9 be the T type of inversion on the whole, the bottom of bolt sleeve cover 8 supports with the top of mount table and presses, and be provided with O type circle slot on the top surface of mount table, O type circle II10 is installed in O type circle slot, even if realize hard contact after fastening between bolt sleeve cover 8 and the bolt sleeve pipe 9, also can prevent O type circle II10 extrusion damage. The diameter of the outer ring of the O-shaped ring II10 is smaller than the diameter of the outer wall of the bolt sleeve cover 8, so that the influence of sunlight on the O-shaped ring II10 rubber ring can be avoided, the aging rate of the O-shaped ring II10 is reduced, and the service life is prolonged. The joint surface of the bolt sleeve cover 8 and the bolt sleeve 9 is lower than the end part of the bolt sleeve 9, so that rainwater cannot be overstocked into the sealing assembly, and the waterproof performance is better. The installation face of the bolt sleeve cover 8 is a standard hexagon, universal tools are adopted for installation, the use is convenient, a plurality of anti-rotation faces are processed on the excircle of the bolt sleeve 9, when the bolt sleeve cover 8 rotates, the bolt sleeve 9 cannot generate linkage, and abrasion cannot be generated on the O-shaped ring I3.

The bolt sealing structure provided by the embodiment can be widely applied to fastening and connecting components in various industries, for example, the bolt sealing structure can be applied to a bolt fastening and sealing structure of a rail vehicle air conditioner, as shown in fig. 3 and 4, the bolt sealing structure is used for connecting and fixing an installation frame 11 and a vehicle body, an O-shaped ring II10 is installed in an O-shaped ring groove of a bolt sleeve 9, the O-shaped ring II10 can be prevented from being extruded and damaged, a joint surface of a bolt sleeve cover 8 and the bolt sleeve 9 is lower than the end part of the bolt sleeve 9, even if the bolt sleeve cover 8 and the bolt sleeve 9 are fastened and then in hard contact with each other, the O-shaped ring II10 installed in the O-shaped ring groove of the bolt sleeve 9 is damaged, the waterproof requirement can be met, accumulated water is prevented from diffusing into the inner side wall of the bolt sleeve 9 along the joint surface of the bolt sleeve cover 8 and the bolt sleeve 9 and then enters the installation frame 11 along the screw 2, and the waterproof sealing performance is improved; the diameter of the outer ring of the O-shaped ring II10 is smaller than that of the outer wall of the bolt sleeve cover 8, so that the influence of sunlight on the O-shaped ring II10 rubber ring is avoided, and the service life of the O-shaped ring II10 is prolonged. Compare with bolt seal structure among the prior art as shown in fig. 1, the utility model provides a bolt seal structure makes the atmospheric pressure variation range that entire structure can bear bigger through adopting twice O type circle and one deck bullet pad 4, can satisfy rail vehicle to the requirement of gas tightness, avoids the outer pressure fluctuation of car to pass to in the car through the bolt hole.

It should be noted that: in this embodiment, use the sealed introduction of rail vehicle air conditioner as the example the utility model provides a bolt seal structure, the specific embodiment that describes here only is used for explaining the utility model discloses, not be used for injecing the utility model discloses, in practical application, the utility model provides a bolt seal structure can be used for any scene that needs to be fixed, sealed, only need use the utility model provides a bolt seal structure installs the object that needs to be fixed on installation frame 11, all can realize sealed, waterproof effect.

To sum up, compared with the prior art, the bolt sealing structure provided by the utility model has the advantages that the first waterproof sealing is realized by arranging the bolt sleeve and the bolt sleeve cover which are mutually sleeved and arranging the O-shaped ring II for sealing and waterproofing between the bolt sleeve and the bolt sleeve cover; the joint surface of the bolt sleeve and the bolt sleeve cover is lower than the end part of the bolt sleeve, so that rainwater cannot accumulate into the sealing assembly, rainwater is effectively prevented from entering a use space along the bolt and the bolt hole, and a second sealing is realized; an O-shaped ring I is arranged between the bolt sleeve and the mounting frame to realize third sealing, triple sealing is adopted for water prevention, the change range of the air pressure which can be borne is larger, the air tightness requirement of the use space is met, and external pressure fluctuation is prevented from being transmitted into the use space through the bolt hole; the O-shaped ring I and the O-shaped ring II are arranged in the clamping groove or the groove, so that the sealing element can be prevented from being extruded and damaged when the sealing ring is installed and used; the influence of sunlight on the O-shaped ring II can be avoided, the aging rate of the sealing element is reduced, and the service life of the bolt sealing structure is prolonged.

Similar solutions can be derived as described above in connection with the given solution content. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the technical solution of the present invention unless departing from the content of the technical solution of the present invention.

Claims

1. The utility model provides a bolt seal structure, includes bolt head and screw rod, its characterized in that: the bolt sleeve is sleeved with the screw below the bolt head and wraps the bolt head, the bolt sleeve is sleeved outside the bolt sleeve, and the O-shaped ring II for waterproof sealing is arranged between the bolt sleeve and the bolt sleeve.

2. A bolt sealing structure according to claim 1, wherein: the cross section of the bolt sleeve is L-shaped, and the side wall of the bottom edge of the L-shaped bottom edge is tightly contacted with the screw rod.

3. A bolt sealing structure according to claim 2, wherein: and an elastic pad is arranged between the top surface of the bottom edge of the L shape and the bottom of the bolt head.

4. A bolt sealing structure according to claim 1, wherein: bolt sleeve pipe bottom sets up the draw-in groove, set up sealed waterproof O type circle I in the draw-in groove.

5. A bolt sealing structure according to claim 1, wherein: the bolt sleeve comprises an installation platform, and a groove for installing the O-shaped ring II is formed in the top surface of the installation platform.

6. A bolt sealing structure according to claim 5, wherein: the bottom of the bolt sleeve cover is in hard contact with the top surface of the mounting table.

7. A bolt sealing structure according to claim 1, wherein: the diameter of the outer ring of the O-shaped ring II is smaller than that of the outer wall of the bolt sleeve cover.

8. A bolt sealing structure according to claim 1, wherein: the joint surface of the bolt sleeve cover and the bolt sleeve is lower than the end part of the bolt sleeve.

9. A bolt sealing structure according to claim 1, wherein: the bolt sleeve cover mounting surface is a standard hexagon.

10. A bolt sealing structure according to claim 1, wherein: and a plurality of anti-rotation surfaces for preventing the bolt sleeve from being linked with the bolt sleeve cover are processed on the outer circle of the bolt sleeve.