Anti-fracture bolt with torque force adjusting function

Abstract

The invention relates to the technical field of bolts, and discloses an anti-fracture bolt with a torque force adjusting function, the anti-fracture bolt comprises a bolt assembly, an adjusting assembly, a locking assembly and an anti-fracture assembly, the adjusting assembly, the locking assembly and the anti-fracture assembly are all located in the bolt assembly, the locking assembly is located above the adjusting assembly, and the anti-fracture assembly is located above the locking assembly. The anti-fracture assembly is located on the outer side of the adjusting assembly. When a rotating rod rotates, a screw rod slides under the influence of a second guide block on the outer side of a pressing disc, so that the pressing disc is driven by the screw rod to extrude a spring, and when the spring is extruded, the insertion force of a round head bolt in a positioning hole of a limiting disc is increased, so that the round head bolt and the limiting disc can bear higher torque force; therefore, the effect of torque force adjustment is achieved. And a cross screw driver is used for rotating the cross bolt, so that the non-slip mat is tightly attached to the top of the rotating rod, the rotating rod can be locked, and the use reliability of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bolts, and in particular relates to a torque-adjustable anti-fracture bolt. Background Art

[0002] Bolt: A mechanical part, a cylindrical threaded fastener that is matched with a nut. A type of fastener consisting of a head and a screw (a cylinder with external threads), which must be matched with a nut to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

[0003] The common bolts on the market have a relatively simple function. Most of them only have the effect of fixing external parts. When the torque force of the rotating bolt is too large, it is easy to cause the tensile stress of the bolt to exceed the yield strength limit of the material, resulting in plastic deformation or even fracture. For this reason, we propose a torque-adjustable anti-fracture bolt. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a torque-adjustable anti-fracture bolt, which effectively solves the problem that the common bolts on the market have a relatively single function and most of them only have the effect of fixing external parts. When the torque force of the rotating bolt is too large, it is easy to cause the tensile stress of the bolt to exceed the yield strength limit of the material, resulting in plastic deformation or even fracture.

[0005] To achieve the above object, the present invention provides the following technical solution: a torque-adjustable anti-fracture bolt, comprising a bolt assembly, an adjusting assembly, a locking assembly and an anti-fracture assembly, wherein the adjusting assembly, the locking assembly and the anti-fracture assembly are all located inside the bolt assembly, the locking assembly is located above the adjusting assembly, and the anti-fracture assembly is located outside the adjusting assembly;

[0006] The bolt assembly includes a screw head and a stud, an installation cavity is opened inside the screw head, a connecting port is opened through the bottom of the installation cavity, a limiting disk is arranged inside the installation cavity, the stud is located below the screw head, and the top of the stud passes through the connecting port of the screw head and is connected to the bottom of the limiting disk.

[0007] Preferably, the outer side wall of the screw head is evenly provided with mounting holes, the inner side wall of the mounting hole is evenly provided with an annular limiting groove, the inner side wall of the mounting hole is evenly provided with two groups of guide grooves, the mounting hole and the guide groove are both connected with the mounting cavity, the outer side wall of the limiting plate is evenly provided with positioning holes, the top of the screw head is evenly provided with threaded countersunk holes, the threaded countersunk holes are connected with the mounting hole, the outer side wall of the screw head is evenly provided with scale lines, and the scale lines are evenly distributed in an annular array on the outer circle of the mounting hole.

[0008] Preferably, the adjustment assembly includes a rotating rod, a limiting ring is provided on the outer ring of the rotating rod, a cross groove and a pointer groove are provided on the outer wall of the rotating rod, a threaded hole is provided on the side of the rotating rod away from the cross groove, a screw is threaded in the threaded hole, a pressure plate is provided on the outer side of the screw, a first groove is provided on the side of the pressure plate away from the screw, and two groups of second guide blocks are evenly provided on the outer wall of the pressure plate.

[0009] Preferably, the rotating rod is arranged in the mounting hole of the screw head, the pointer groove corresponds to the scale line, the limiting ring is arranged in the annular limiting groove of the screw head, and the second guide block is arranged in the guide groove of the screw head.

[0010] Preferably, the anti-fracture component includes a round head pin, and two groups of first guide blocks are evenly arranged on the outer side wall of the cylindrical part of the round head pin, and a second groove is opened on the outer side of the cylindrical part of the round head pin, and a spring is arranged in the second groove.

[0011] Preferably, the round head portion of the round head latch is inserted into the positioning hole of the limiting plate, the side of the spring away from the round head latch is arranged in the first groove of the pressure plate, and the first guide block is arranged in the guide groove of the screw head.

[0012] Preferably, the locking assembly comprises a cross bolt, and an anti-slip pad is provided at the bottom of the cross bolt.

[0013] Preferably, the cross bolt is screwed into the threaded countersunk hole of the screw head, and the bottom of the anti-slip pad fits with the top of the rotating rod.

[0014] Preferably, the top of the cross bolt is flush with the top of the screw head, and the side of the rotating rod where the cross groove is formed is flush with the outer side wall of the screw head.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Use the spring to push the round head pin against the positioning hole of the limit plate, and use a wrench to turn the screw head. When the torque applied to the screw head is greater than the elastic force of the spring, the screw head will cause the round head pin to slip out of the positioning hole of the limit plate when it turns, and then the screw head cannot drive the limit plate and the stud to rotate, thereby achieving the anti-breakage effect of the bolt;

[0017] 2. When the rotating rod rotates, the screw rod will slide under the influence of the second guide block on the outside of the pressure plate, thereby driving the pressure plate to squeeze the spring through the screw rod. When the spring is squeezed, the insertion force of the round head latch in the positioning hole of the limit plate will be increased, so that the round head latch and the limit plate can withstand higher torque force, thereby achieving the effect of torque force adjustment;

[0018] 3. The pointer groove and the scale line cooperate with each other to facilitate the user to observe the rotation angle and number of turns of the rotating rod, thereby ensuring that the rotation angle and number of turns of each set of rotating rods are the same. Use a cross screwdriver to rotate the cross bolt so that the anti-slip pad fits tightly against the top of the rotating rod, so that the rotating rod can be locked, thereby improving the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is a schematic structural diagram of a torque-adjustable anti-fracture bolt according to the present invention;

[0022] Figure 2 For the present invention Figure 1 A magnified view of part A;

[0023] Figure 3 It is a right side cross-sectional view of a torque-adjusting anti-fracture bolt of the present invention;

[0024] Figure 4 For the present invention Figure 3 A magnified view of part B;

[0025] Figure 5 A top cross-sectional view of a torque-adjustable anti-fracture bolt according to the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of part C.

[0027] In the figure: 100, bolt assembly; 200, adjustment assembly; 300, locking assembly; 400, anti-breakage assembly; 1, screw head; 11, stud; 12, rotating rod; 13, cross groove; 14, scale line; 15, pointer groove; 16, cross bolt; 17, limit plate; 18, round head pin; 19, spring; 2, limit ring; 21, screw; 22, pressure plate; 23, anti-slip pad; 24, first guide block; 25, second guide block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] like Figure 1-6 As shown, the present invention provides a technical solution: a torque-adjustable anti-fracture bolt, comprising a bolt assembly 100, an adjusting assembly 200, a locking assembly 300 and an anti-fracture assembly 400, wherein the adjusting assembly 200, the locking assembly 300 and the anti-fracture assembly 400 are all located inside the bolt assembly 100, the locking assembly 300 is located above the adjusting assembly 200, and the anti-fracture assembly 400 is located outside the adjusting assembly 200;

[0030] The bolt assembly 100 includes a screw head 1 and a stud 11. An installation cavity is provided inside the screw head 1. A connecting port is provided through the bottom of the installation cavity. A limit disk 17 is rotatably arranged inside the installation cavity. The stud 11 is located below the screw head 1. The top of the stud 11 passes through the connecting port of the screw head 1 and is connected to the bottom of the limit disk 17. Installation holes are evenly provided on the outer wall of the screw head 1. An annular limiting groove is provided on the inner wall of the installation hole. Two groups of guide grooves are evenly provided on the inner wall of the installation hole. The installation hole and the guide groove are both connected with the installation cavity. Positioning holes are evenly provided on the outer wall of the limit disk 17. Threaded countersunk holes are evenly provided on the top of the screw head 1. The threaded countersunk holes are connected with the installation holes. Scale lines 14 are evenly provided on the outer wall of the screw head 1. The scale lines 14 are evenly distributed in an annular array on the outer circle of the installation hole.

[0031] The adjustment component 200 includes a rotating rod 12, a limit ring 2 is fixedly provided on the outer ring of the rotating rod 12, a cross groove 13 and a pointer groove 15 are opened on the outer wall of the rotating rod 12, a threaded hole is opened on the side of the rotating rod 12 away from the cross groove 13, a screw 21 is threaded in the threaded hole, a pressure plate 22 is fixedly provided on the outer side of the screw 21, a first groove is opened on the side of the pressure plate 22 away from the screw 21, two groups of second guide blocks 25 are evenly fixedly provided on the outer wall of the pressure plate 22, the rotating rod 12 is rotatably set in the mounting hole of the screw head 1, the pointer groove 15 corresponds to the scale line 14, the limit ring 2 is rotatably set in the annular limit groove of the screw head 1, and the second guide block 25 is slidably set in the guide groove of the screw head 1.

[0032] The anti-fracture component 400 includes a round head pin 18, and two groups of first guide blocks 24 are evenly fixedly arranged on the outer wall of the cylindrical part of the round head pin 18. A second groove is opened on the outer side of the cylindrical part of the round head pin 18, and a spring 19 is fixedly arranged in the second groove. The round head part of the round head pin 18 is inserted into the positioning hole of the limit plate 17, and the side of the spring 19 away from the round head pin 18 is fixedly arranged in the first groove of the pressure plate 22, and the first guide block 24 is slidably arranged in the guide groove of the screw head 1.

[0033] The locking assembly 300 includes a cross bolt 16, and an anti-slip pad 23 is fixedly arranged at the bottom of the cross bolt 16. The cross bolt 16 is screwed into the threaded countersunk hole of the screw head 1. The bottom of the anti-slip pad 23 fits with the top of the rotating rod 12. The top of the cross bolt 16 is flush with the top of the screw head 1, and the side of the rotating rod 12 where the cross groove 13 is opened is flush with the outer wall of the screw head 1.

[0034] A method for using a torque-adjustable anti-fracture bolt:

[0035] Step 1: Use the spring 19 to press the round head pin 18 against the positioning hole of the limit plate 17. When the screw head 1 is rotated with a wrench, the limit plate 17 is driven to rotate by the round head pin 18, and then the stud 11 is driven to rotate synchronously. When the torque applied to the screw head 1 is greater than the elastic force of the spring 19, the screw head 1 will cause the round head pin 18 to slide out of the positioning hole of the limit plate 17 when rotating. The first guide block 24 assists the round head pin 18 to slide stably, so that the screw head 1 cannot drive the limit plate 17 and the stud 11 to rotate, thereby achieving the anti-breakage effect of the bolt.

[0036] Step 2: Use a cross screwdriver to insert into the cross groove 13 and rotate it to drive the rotating rod 12 to rotate. The limiting ring 2 assists the rotating rod 12 to rotate stably. When the rotating rod 12 rotates, the screw 21 is affected by the second guide block 25 on the outside of the pressure plate 22 and slides. In this way, the pressure plate 22 is driven by the screw 21 to squeeze the spring 19. When the spring 19 is squeezed, the tightening force of the round head pin 18 in the positioning hole of the limiting plate 17 is increased, so that the round head pin 18 and the limiting plate 17 can withstand a higher torque force, thereby achieving the effect of torque force adjustment.

[0037] Step three: The pointer groove 15 and the scale line 14 cooperate with each other to facilitate the user to observe the rotation angle and number of turns of the rotating rod 12, thereby ensuring that the rotation angle and number of turns of each group of rotating rods 12 are the same. When the rotation angle of the rotating rod 12 is determined, the rotating rod 12 is stabilized by a cross screwdriver, and another cross screwdriver is used to rotate the cross bolt 16 to make the anti-slip pad 23 fit tightly against the top of the rotating rod 12, so that the rotating rod 12 can be locked, thereby improving the reliability of the device.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A torque-adjustable anti-fracture bolt, comprising a bolt assembly (100), an adjustment assembly (200), a locking assembly (300) and an anti-fracture assembly (400), characterized in that: The adjusting assembly (200), the locking assembly (300) and the anti-fracture assembly (400) are all located inside the bolt assembly (100); the locking assembly (300) is located above the adjusting assembly (200), and the anti-fracture assembly (400) is located outside the adjusting assembly (200); The bolt assembly (100) comprises a screw head (1) and a stud (11); an installation cavity is provided inside the screw head (1); a connecting port is provided through the bottom of the installation cavity; a limiting plate (17) is provided inside the installation cavity; the stud (11) is located below the screw head (1); and the top of the stud (11) passes through the connecting port of the screw head (1) and is connected to the bottom of the limiting plate (17).

2. The anti-fracture bolt with torque adjustment according to claim 1, characterized in that: The outer wall of the screw head (1) is evenly provided with mounting holes, the inner wall of the mounting hole is evenly provided with an annular limiting groove, the inner wall of the mounting hole is evenly provided with two sets of guide grooves, the mounting hole and the guide groove are both connected to the mounting cavity, the outer wall of the limiting plate (17) is evenly provided with positioning holes, the top of the screw head (1) is evenly provided with threaded countersunk holes, the threaded countersunk holes are connected to the mounting hole, and the outer wall of the screw head (1) is evenly provided with scale lines (14), and the scale lines (14) are evenly distributed in an annular array on the outer circle of the mounting hole.

3. The anti-fracture bolt with torque adjustment according to claim 2, characterized in that: The adjustment assembly (200) comprises a rotating rod (12), the outer ring of the rotating rod (12) is provided with a limit ring (2), the outer wall of the rotating rod (12) is provided with a cross groove (13) and a pointer groove (15), the rotating rod (12) is provided with a threaded hole on the side away from the cross groove (13), a screw rod (21) is threaded in the threaded hole, a pressure plate (22) is provided on the outer side of the screw rod (21), a first groove is provided on the side of the pressure plate (22) away from the screw rod (21), and two groups of second guide blocks (25) are evenly provided on the outer wall of the pressure plate (22).

4. The anti-fracture bolt with torque adjustment according to claim 3, characterized in that: The rotating rod (12) is arranged in the mounting hole of the screw head (1), the pointer groove (15) corresponds to the scale line (14), the limiting ring (2) is arranged in the annular limiting groove of the screw head (1), and the second guide block (25) is arranged in the guide groove of the screw head (1).

5. The anti-fracture bolt with torque adjustment according to claim 4, characterized in that: The anti-fracture assembly (400) comprises a round head latch (18), two groups of first guide blocks (24) are evenly arranged on the outer side wall of the cylindrical part of the round head latch (18), a second groove is opened on the outer side of the cylindrical part of the round head latch (18), and a spring (19) is arranged in the second groove.

6. The anti-fracture bolt with torque adjustment according to claim 5, characterized in that: The round head portion of the round head latch (18) is inserted into the positioning hole of the limiting plate (17), the side of the spring (19) away from the round head latch (18) is arranged in the first groove of the pressure plate (22), and the first guide block (24) is arranged in the guide groove of the screw head (1).

7. The anti-fracture bolt with torque adjustment according to claim 6, characterized in that: The locking assembly (300) comprises a cross bolt (16), and an anti-slip pad (23) is provided at the bottom of the cross bolt (16).

8. The anti-fracture bolt with torque adjustment according to claim 7, characterized in that: The cross bolt (16) is screwed into the threaded countersunk hole of the screw head (1), and the bottom of the anti-slip pad (23) fits the top of the rotating rod (12).

9. The anti-fracture bolt with torque adjustment according to claim 8, characterized in that: The top of the cross bolt (16) is flush with the top of the screw head (1), and the side of the rotating rod (12) on which the cross groove (13) is formed is flush with the outer side wall of the screw head (1).

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