Rust removal bolt

Abstract

The utility model relates to a derusting bolt which is composed of a head portion and a rod portion, the rod portion is a cylinder with the length extending in the vertical direction, external threads are arranged on the rod portion in the circumferential direction, a derusting groove is formed in the rod portion, the head portion further comprises a positioning sleeve at the bottom, and the rod portion comprises a dismounting section made of materials prone to deformation at the top. A positioning groove allowing the positioning sleeve to be inserted therein is formed in the dismounting and mounting section, a plurality of mounting insertion blocks are arranged on the positioning sleeve in the circumferential direction in a protruding mode, the mounting insertion blocks are arranged at intervals in the length direction of the positioning sleeve, and mounting insertion grooves corresponding to the mounting insertion blocks are formed in the rod portion. By the adoption of the scheme, the derusting bolt has the advantages that the overall height of the bolt can be adjusted by matching the mounting insertion grooves of the dismounting and mounting section with different mounting insertion blocks, and therefore the bolt can be matched with screw holes with different depths.

Description

Technical Field

[0001] The utility model relates to a bolt, in particular to a rust-removing bolt. Background Art

[0002] During the automobile body processing, electrophoresis, painting, and other treatments are an important process. During the electrophoresis, painting, and other treatments, there are many screw holes on the body, and the electrophoretic paint or other coatings during the electrophoresis, painting, and other treatments will enter the screw holes. When the fastening bolts are connected on the subsequent body, these electrophoretic paints or other coatings will affect the bolt installation quality and affect the assembly of the entire vehicle.

[0003] Paint scraping bolts are widely used for this purpose. Their characteristics are that a matching thread is set on the cylindrical surface of the bolt rod, and there is a paint scraping tooth section in the middle with a paint scraping groove on it, which can effectively remove excess paint or dirt and ensure the quality of the assembly connection.

[0004] However, since the depths of the screw holes are different, how to adjust the length of the bolt so that it can match the screw holes of different depths has become an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a rust-removing bolt that can cooperate with screw holes of different depths by adjusting the overall height of the bolt by cooperating the installation slot of the disassembly section with different installation plugs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it consists of a head and a rod, the rod is a cylindrical body extending in the up-down direction and is circumferentially provided with an external thread, the rod is provided with a rust removal groove, the head also includes a positioning sleeve at the bottom, the rod includes a disassembly and assembly section at the top made of a deformable material, the disassembly and assembly section is provided with a positioning groove for inserting the positioning sleeve, the positioning sleeve is circumferentially protruding with a plurality of mounting blocks, each mounting block is arranged at intervals along the length direction of the positioning sleeve, and the rod is provided with a mounting slot corresponding to each mounting block.

[0007] The utility model is further configured as follows: each of the mounting plugs is arranged in a step-like manner and includes a first contact surface and a second contact surface which are parallel to each other, each of the second contact surfaces is fixed to a positioning sleeve, and the width of each of the first contact surfaces is smaller than the width of the second contact surface.

[0008] The utility model is further configured as follows: it also includes a cover body, the head is provided with a liquid injection groove and the cover body is detachably installed corresponding to the liquid injection groove, the positioning sleeve is provided with a first liquid injection channel interconnected with the liquid injection groove, and the rod is provided with a second liquid injection channel corresponding to the first liquid injection channel.

[0009] The utility model is further configured as follows: the positioning sleeve comprises a loading section at the bottom, the loading section is configured to be tapered from top to bottom and from outside to inside, and the diameter of the upper end surface of the loading section is the same as the diameter of the installation slot.

[0010] The utility model is further configured as follows: the head comprises a limiting section above the positioning sleeve, and the upper end surface of the disassembly section abuts against the lower end surface of the limiting section or against the lower end surface of one of the mounting plug blocks.

[0011] The utility model is further configured as follows: a first mating surface is provided on the left side of the rod portion located at the rust removal groove, and a second mating surface is provided on the rear side of the rod portion located at the rust removal groove, the first mating surface and the second mating surface are perpendicular to each other, and the width of the first mating surface gradually increases from top to bottom.

[0012] The utility model is further configured as follows: the second matching surface is arranged to be inclined from right to left from top to bottom.

[0013] By adopting the above technical scheme, 1. Since the positioning sleeve has a plurality of installation blocks arranged at intervals along the up and down directions, after applying a force to the disassembly and assembly section, each installation block on the positioning sleeve inserted into the positioning groove can fall into the corresponding installation slot, thereby realizing the connection between the head and the rod, and the head and the rod cannot rotate relative to each other, so that the bolt can rotate smoothly as a whole. Therefore, when the rod or the head is worn and needs to be replaced, the head and the rod can be separated and then disassembled and replaced, thereby extending the service life of the rust-removing bolt; 2. When the volume of the positioning sleeve inserted into the positioning groove changes, that is, each installation slot of the disassembly and assembly section cooperates with different installation blocks, so that the overall height of the bolt changes, so that when the overall height of the bolt is less than the depth of the screw hole and the height of the head is increased, the overall height of the rust-removing bolt can be increased, so that the upper end face of the head and the upper end face of the screw hole are at the same height, thereby providing convenience for disassembling and assembling the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is an assembly diagram of a specific implementation method of the utility model;

[0016] Figure 2 It is an exploded view of the utility model;

[0017] Figure 3 It is a cross-sectional view of the utility model;

[0018] Figure 4 It is a three-dimensional diagram of the head in the utility model;

[0019] Figure 5 It is a three-dimensional diagram of the state in which the rod of the utility model moves downward to increase the total height of the rust removal bolt;

[0020] Figure 6 for Figure 2 A is an enlarged view of the middle image.

[0021] In the figure: 1-head, 11-positioning sleeve, 111-installation plug, 1111-first contact surface, 1112-second contact surface, 112-first liquid flow channel, 113-loading section, 114-limiting section, 12-liquid injection groove;

[0022] 2-rod, 21-external thread, 22-rust removal groove, 23-disassembly section, 231-positioning groove, 24-installation slot, 25-second fluid flow channel, 26-first mating surface, 27-second mating surface;

[0023] 3-cover;

[0024] 4- Spring washer;

[0025] 5-Flat gasket. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-Figure 6As shown, the utility model discloses a rust-removing bolt, which is composed of a head 1 and a rod 2. The rod 2 is arranged in a cylindrical shape with a length extending in the up-down direction and an external thread 21 is arranged in the circumferential direction. The rod 2 is provided with a rust-removing groove 22. Therefore, in the process of rotating the external thread 21 of the rod 2 and then cooperating with the screw hole, the rust-removing groove 22 of the rod 2 will contact different positions of the screw hole as the rod 2 rotates, so that the paint layer and dirt in the screw hole can be scraped off and can be located at the position of the rust-removing groove 22 (this is the prior art, The head 1 also includes a positioning sleeve 11 at the bottom, and the rod 2 includes a disassembly section 23 at the top made of a deformable material such as rubber. The disassembly section 23 is provided with a positioning groove 231 for inserting the positioning sleeve 11. The positioning sleeve 11 is provided with a plurality of mounting blocks 111 protruding in the circumferential direction. The mounting blocks 111 are arranged at intervals along the length direction of the positioning sleeve 11. The rod 2 is provided with mounting slots 24 corresponding to the mounting blocks 111. 1. Due to the positioning sleeve 11 There are a number of installation blocks 111 arranged at intervals along the up and down directions. Therefore, after applying a force to the disassembly and assembly section 23, each installation block 111 on the positioning sleeve 11 inserted into the positioning groove 231 can fall into the corresponding installation slot 24, thereby realizing the connection between the head 1 and the rod 2, and the head 1 and the rod 2 cannot rotate relative to each other, so that the bolt can rotate smoothly as a whole. Therefore, when the rod 2 or the head 1 is worn and needs to be replaced, the head 1 and the rod 2 can be separated and then disassembled and replaced, thereby extending the service life of the rust-removing bolt; 2. When the volume of the positioning sleeve 11 inserted into the positioning groove 231 changes, that is, each installation slot 24 of the disassembly and assembly section 23 cooperates with different installation blocks 111, so that the overall height of the bolt changes, so that when the overall height of the bolt is less than the depth of the screw hole and the height of the head 1 is increased, the overall height of the rust-removing bolt can be increased, so that the upper end surface of the head 1 and the upper end surface of the screw hole are at the same height, thereby providing convenience for disassembling and assembling the bolt.

[0028] Preferably, each of the mounting blocks 111 is arranged in a step-like manner and includes a first contact surface 1111 and a second contact surface 1112 which are parallel to each other. Each of the second contact surfaces 1112 is fixed to the positioning sleeve 11 by injection molding, welding, etc. The width of each of the first contact surfaces 1111 is smaller than the width of the second contact surface 1112. Since the width of each of the first contact surfaces 1111 is smaller than the second contact surface 1112 fixed to the positioning sleeve 11, when each of the mounting blocks 111 is installed into the corresponding mounting slot 24, the first contact surface 1111 enters the mounting slot 24. Therefore, each of the mounting blocks 111 can be more smoothly inserted into the corresponding mounting slot 24, thereby facilitating the connection between the head 1 and the rod 2.

[0029] Wherein, it also includes a cover body 3, the head 1 is provided with a liquid injection groove 12 and the cover body 3 is detachably installed corresponding to the liquid injection groove 12 by means of snaps, etc., the positioning sleeve 11 is provided with a first liquid injection channel 112 which is interconnected with the liquid injection groove 12, and the rod 2 is provided with a second liquid injection channel 25 corresponding to the first liquid injection channel 112. Since the head 1 is provided with a liquid injection groove 12 and the head 1 and the rod 2 are assembled, the liquid flowing into the liquid injection groove 12 at this time can flow into the screw hole through the first liquid injection channel 112 and the second liquid injection channel 25. Therefore, before the external thread 21 of the rust removal bolt is screwed in, the end of the rod 2 can be placed opposite to the screw hole, and then a rust removal liquid made of organic acid, biological enzyme-based formula, etc., which can chemically react and dissolve the rust on the surface of the screw hole, is placed through the liquid injection groove 12 and then flows into the screw hole through the second liquid injection channel 25. After the rust removal liquid reacts with it, it is poured out and then screwed into the rod 2 again, so that the rust in the screw hole can be more thoroughly removed.

[0030] Preferably, the positioning sleeve 11 includes a loading section 113 at the bottom, and the loading section 113 is set with a tapered opening from top to bottom and from outside to inside. The diameter of the upper end surface of the loading section 113 is the same as the diameter of the installation slot 24. Since the width of the bottom of the loading section 113 is the smallest and the bottom of the loading section 113 will enter the positioning groove 231 first, the loading section 113 with a tapered opening can make the positioning sleeve 11 more smoothly inserted into the positioning groove 231.

[0031] Preferably, Figure 5 As shown, the head 1 includes a limiting section 114 above the positioning sleeve 11, and the upper end surface of the disassembly section 23 abuts against the lower end surface of the limiting section 114 or against the lower end surface of one of the mounting plug blocks 111. After the mounting slot 24 is matched with different mounting plug blocks 111, the volume of the positioning sleeve 11 falling into the positioning groove 231 is different. When the mounting plug block 111 is matched with the corresponding mounting slot 24, the upper end surface of the disassembly section 23 abuts against the lower end surface of the limiting section 114. The disassembly section 23 is moved downward so that the top installation slot 24 on the disassembly section 23 cooperates with the top installation plug block 111. At this time, the upper end surface of the disassembly section 23 will be against the bottom surface of the installation plug block 111 located above the disassembly section 23. Therefore, after the positional relationship between the head 1 and the rod 2 is adjusted, the upper end surface of the disassembly section 23 of the rod 2 will always be against other parts, so that the rod 2 will not move in the up and down directions during use and can be more stably connected to the head 1.

[0032] Preferably, the rod portion 2 is provided with a first mating surface 26 on the left side of the rust removal groove 22, and the rod portion 2 is provided with a second mating surface 27 on the rear side of the rust removal groove 22. The first mating surface 26 and the second mating surface 27 are perpendicular to each other, and the width of the first mating surface 26 gradually increases from top to bottom. Since the bottom width of the first mating surface 26 is the largest, the width of the bottom of the rust removal groove 22 is increased, thereby increasing the surface area of ​​the first mating surface 26, and thereby increasing the contact area between the first mating surface 26 and the screw hole in the process of rotating the rod portion 2 to achieve the mating of the external thread 21 with the screw hole, thereby improving the rust removal ability of the rust removal bolt after rotating the rod portion 2.

[0033] Among them, the second mating surface 27 is inclined from right to left from top to bottom. Due to the inclined setting of the second mating surface 27, the width of the rust removal groove 22 in the left and right direction is increased, thereby increasing the volume of the rust removal groove 22, so that when the rod 2 falls into the screw hole and then rotates, the bottom of the second mating surface 27 can contact the inner side of the screw hole compared to the top of the second mating surface 27, thereby causing contact with the rust during rotation and applying force to increase the rust removal ability of the rust removal bolt.

[0034] In addition, it is worth mentioning that in the assembly of fasteners, the spring washers 4 and the flat washers 5 are usually not directly fixed on the bolts, but serve as auxiliary components between the bolts and the fasteners. The specific installation steps and functions are as follows: 1. Place the flat washers 5 on the fasteners (such as bases, panels), with the plane corresponding to the contact surface, to increase contact, prevent scratches, and evenly distribute pressure; 2. The spring washers 4 are then placed flat on the washers 5 or directly under the head 1 (depending on the design) to provide dynamic adjustment of tension, anti-loosening, and adaptability; 3. The rod 2 passes through the flat washers 5 and the spring washers 4, aligns with the threads, screws into the fasteners, flattens the flat washers 5, tightens the spring washers 4, and adjusts the tightening force. This installation sequence and configuration ensures that the spring washers 4 and the flat washers 5 play an effective role, improves the stability and adaptability of the fastening, reduces loosening, and protects the fastening surface at the same time.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rust removal bolt, consisting of a head and a rod, wherein the rod is a cylindrical body extending in the vertical direction and is provided with external threads in the circumferential direction, and a rust removal groove is provided on the rod, characterized in that: The head also includes a positioning sleeve at the bottom, the rod includes a disassembly section at the top made of a material that is easy to deform, the disassembly section is provided with a positioning groove for the positioning sleeve to be inserted, the positioning sleeve is circumferentially protruding with a plurality of mounting blocks, each mounting block is arranged at intervals along the length direction of the positioning sleeve, and the rod is provided with a mounting slot corresponding to each mounting block.

2. A rust-removing bolt according to claim 1, characterized in that: Each of the mounting plugs is arranged in a step-like manner and comprises a first contact surface and a second contact surface which are parallel to each other. Each of the second contact surfaces is fixed to a positioning sleeve, and the width of each of the first contact surfaces is smaller than the width of the second contact surface.

3. A rust-removing bolt according to claim 1 or 2, characterized in that: It also includes a cover body, the head is provided with a liquid injection groove and the cover body is detachably installed corresponding to the liquid injection groove, the positioning sleeve is provided with a first liquid injection channel interconnected with the liquid injection groove, and the rod is provided with a second liquid injection channel corresponding to the first liquid injection channel.

4. A rust-removing bolt according to claim 2, characterized in that: The positioning sleeve comprises a loading section at the bottom, the loading section is arranged in a constricted manner from top to bottom and from outside to inside, and the diameter of the upper end surface of the loading section is the same as the diameter of the installation slot.

5. The rust-removing bolt according to claim 2, characterized in that: The head includes a limiting section above the positioning sleeve, and the upper end surface of the disassembly section abuts against the lower end surface of the limiting section or against the lower end surface of one of the installation plug blocks.

6. The rust-removing bolt according to claim 1, characterized in that: The rod part is provided with a first mating surface on the left side of the rust removal groove, and the rod part is provided with a second mating surface on the rear side of the rust removal groove. The first mating surface is perpendicular to the second mating surface, and the width of the first mating surface gradually increases from top to bottom.

7. A rust-removing bolt according to claim 6, characterized in that: The second matching surface is arranged to be inclined from right to left from top to bottom.

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