Bolt structure with self-locking function

Abstract

The utility model relates to the technical field of mechanical assembly fixing, in particular to a bolt structure with a self-locking function, which comprises an outer expansion mechanism, the outer expansion mechanism comprises a fixing ring, the top of the fixing ring is provided with a mounting hole, the top of the mounting hole is provided with a self-locking mechanism in a penetrating manner, the self-locking mechanism comprises an inner bolt part, and the inner bolt part is provided with a self-locking bolt. An outer expansion shell is welded to the bottom of the fixing ring, the bottom of the inner bolt piece penetrates to the bottom of the outer expansion shell and is welded with a fixing cone, and the top of the surface of the outer expansion shell is movably sleeved with a spring gasket. The outer hexagonal contact body, the first groove, the anti-skid knob, the inner hexagonal groove, the connecting body and the inner bolt piece are used in cooperation, in the using process, the outer hexagonal contact body can be driven through tools such as a wrench, the outer hexagonal contact body drives the fixing ring to rotate, and the anti-skid knob and the inner hexagonal groove are matched for use. And the fixing ring drives the outer expansion shell to be fixedly installed under the thread transmission effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to possess mechanical connecting piece technical field, especially a bolt structure with self locking function. BACKGROUND

[0002] The structural design of the bolt is the key factor to ensure its function and performance, which directly affects the reliability and durability of the connection. When connecting each other between mechanical components, a bolt structure with self locking function is often needed.

[0003] Through the research, the announcement number for CN217814420U, name is a bolt with self locking function, including self locking stud, the upper end surface of self locking stud is provided with hexagonal boss, through research and analysis found, although there is the advantage of improving stability, but, to some extent, there is still the following shortcomings.

[0004] As mentioned above, the bolt with self locking function in the use process, usually cannot be fixed after the outer expansion piece, through the convenient installation of the inner expansion piece to improve the self locking fixing effect of its main body, and usually the use strength of its outer expansion piece is general, leading to its easy to appear damage in the installation process, thereby affecting the installation and use of its main body, in order to solve the above technical problems, for this we design a bolt structure with self locking function. UTILITY MODEL CONTENTS

[0005] The utility model discloses a bolt structure with self locking function, with the advantages of self locking function and high support strength of outer expansion piece, solves the problem of no self locking fixing function and general support strength of outer expansion piece.

[0006] To achieve the above object, the utility model provides the following technical scheme: a bolt structure with self locking function, including outer expansion mechanism, the outer expansion mechanism includes fixed ring, the top of fixed ring is equipped with mounting hole, the top of mounting hole is penetrated and is equipped with self locking mechanism, the self locking mechanism includes inner bolt piece, the bottom of fixed ring is welded with outer expansion shell, the bottom of inner bolt piece penetrates to the bottom of outer expansion shell and is welded with fixed cone.

[0007] Preferably, the top of the outer expansion shell surface is movably sleeved with a spring washer, and the bottom of the spring washer is provided with a fixed washer.

[0008] Preferably, the bottom of the outer expansion shell is provided with an expansion groove, and the top of the fixed ring is welded with an outer hexagonal contact body.

[0009] Preferably, the top of the outer hexagonal contact body is provided with a first groove, the top of the inner bolt piece is welded with a connecting body, the top of the connecting body is welded with an anti-skid knob, and the top of the anti-skid knob is provided with an inner hexagonal recess.

[0010] Preferably, the outer expansion shell comprises a base layer body, a strength supporting layer is fixedly sleeved on the surface of the base layer body, and a reinforcing plating layer is fixedly sleeved on the surface of the strength supporting layer.

[0011] Preferably, the surface of the reinforcing plating layer is sprayed with a wear-resistant coating, and the wear-resistant coating is specifically sprayed by using a methyl etherified high imino melamine resin emulsion.

[0012] Preferably, the strength supporting layer is specifically made of a hard chromium alloy material, and the reinforcing plating layer is specifically made of a nickel-phosphorus alloy material.

[0013] Compared with the prior art, the utility model has the beneficial effects as follows:

[0014] 1、 the utility model discloses a cooperation of outer hexagonal contact body, first recess, antiskid knob, inner hexagonal recess, connecting body and internal screw piece, can drive the fixed ring to rotate to make the fixed ring drive the outer expansion shell to be fixedly installed under the screw thread transmission action in the use process by using spanner and the like tool drive outer hexagonal contact body.

[0015] 2、 the utility model discloses a cooperation of fixed cone, outer expansion shell, fixed gasket, mounting hole, expansion groove and spring washer, can drive the connecting body to make internal screw piece screw thread transmission enter the inner chamber of outer expansion shell by the mode of manually rotating antiskid knob or inner hexagonal bolt drive inner hexagonal recess to the driving of connecting body to make it drive internal screw piece screw thread transmission enters the inner chamber of outer expansion shell in the use process by the hammering of hammer tool to the outer hexagonal contact body to the secondary fixed self-locking simultaneously, extruding outer expansion shell, making it expand, to good fixed effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the three-dimensional axial side schematic diagram of the partial structure of the utility model;

[0018] Figure 3 It is the three-dimensional development schematic diagram of the partial structure of the utility model;

[0019] Figure 4 It is the three-dimensional development schematic diagram of the partial structure of the utility model.

[0020] In the figure: 1, outer expansion mechanism; 2, outer hexagonal contact body; 3, first groove; 4, anti-skid knob; 5, inner hexagonal groove; 6, connecting body; 7, inner bolt; 8, fixed cone; 9, outer expansion shell; 10, fixed washer; 11, mounting hole; 12, expansion groove; 13, spring washer; 14, wear-resistant coating; 15, reinforced plating; 16, strength support layer; 17, base body; 18, fixed ring; 19, self-locking mechanism. DETAILED DESCRIPTION

[0021] Please refer to Figures 1-4 , a bolt structure with self-locking function, comprising an outer expansion mechanism 1, the outer expansion mechanism 1 comprises a fixed ring 18, the top of the fixed ring 18 is provided with a mounting hole 11, the top of the mounting hole 11 is provided with a self-locking mechanism 19, the self-locking mechanism 19 comprises an inner bolt 7, the bottom of the fixed ring 18 is welded with an outer expansion shell 9, the bottom of the inner bolt 7 penetrates to the bottom of the outer expansion shell 9 and is welded with a fixed cone 8, by setting the fixed cone 8, the contact pressure between the inner bolt 7 and the wall surface can be improved, thereby facilitating its insertion into the wall structure.

[0022] Please refer to Figure 2 , the top of the surface of the outer expansion shell 9 is movably sleeved with a spring washer 13, the bottom of the spring washer 13 is provided with a fixed washer 10

[0023] Please refer to Figure 2 , the bottom of the outer expansion shell 9 is provided with an expansion groove 12, by setting the expansion groove 12, it can follow the expansion under the support expansion of the inner bolt 7, thereby improving the fixing effect of the main body, the top of the fixed ring 18 is welded with an outer hexagonal contact body 2, by setting the outer hexagonal contact body 2, the contact area between the screwing tool and the fixed ring 18 can be improved, thereby reducing the installation difficulty of the fixed ring 18.

[0024] Please refer to Figure 2 , the top of the outer hexagonal contact body 2 is provided with a first groove 3, the top of the inner bolt 7 is welded with a connecting body 6, the top of the connecting body 6 is welded with an anti-skid knob 4, by setting the anti-skid knob 4, the user can drive the connecting body 6, thereby improving the installation convenience of the main body, the top of the anti-skid knob 4 is provided with an inner hexagonal groove 5.

[0025] Please refer to Figure 4 , the outer expansion shell 9 comprises a base body 17, the surface of the base body 17 is fixedly sleeved with a strength support layer 16, the surface of the strength support layer 16 is fixedly sleeved with a reinforced plating 15.

[0026] Please refer to Figure 4 , the surface of the reinforced plating 15 is sprayed with a wear-resistant coating 14, the wear-resistant coating 14 is specifically a methyl etherification high imino melamine resin emulsion spray.

[0027] Please refer to Figure 4 The strength support layer 16 is made of hard chromium alloy material, and the reinforcing plating layer 15 is made of nickel-phosphorus alloy material.

[0028] In use, the user first taps a predetermined mounting hole position, and then pushes the outer expansion shell 9 into the inner cavity of the hole position. If there is a mounting thread for cooperation in use in the hole position, the user can drive the outer hexagonal contact body 2 by using a wrench or other tool to make it drive the fixing ring 18 to rotate, so that the fixing ring 18 drives the outer expansion shell 9 to be fixedly installed under the action of threaded transmission. If there is no mounting thread in the hole position, the user can knock the outer hexagonal contact body 2 by using a hammer tool, so that it drives the outer expansion shell 9 into the inner cavity of the hole position through the fixing ring 18. Then the user drives the connecting body 6 by manually rotating the anti-skid knob 4 or driving the inner hexagonal recess 5 by the inner hexagonal bolt, so that it drives the inner bolt 7 to be threaded into the inner cavity of the outer expansion shell 9 under threaded transmission, and at the same time, it is fixedly locked twice, and at the same time, it causes extrusion to the outer expansion shell 9, so that it expands to achieve better fixing effect.

[0029] In summary: the bolt structure with self-locking function solves the problems of not having self-locking fixing function and general support strength of the outer expansion member by cooperation of the inner bolt 7, the fixing cone 8, the outer expansion shell 9, the fixing washer 10 and the mounting hole 11.

Claims

1. A bolt structure with self-locking function, comprising an outer expansion mechanism (1), characterized in that: The outer expansion mechanism (1) comprises a fixed ring (18), the top of the fixed ring (18) is provided with a mounting hole (11), the top of the mounting hole (11) is provided with a self-locking mechanism (19) penetratingly, the self-locking mechanism (19) comprises an inner bolt (7), the bottom of the fixed ring (18) is welded with an outer expansion shell (9), the bottom of the inner bolt (7) penetrates to the bottom of the outer expansion shell (9) and is welded with a fixed cone (8).

2. The bolt structure with self-locking function according to claim 1, characterized in that: The top of the surface of the outer expansion shell (9) is movably sleeved with a spring washer (13), and the bottom of the spring washer (13) is provided with a fixed washer (10).

3. The bolt structure with self-locking function according to claim 1, characterized in that: The bottom of the outer expansion shell (9) is provided with an expansion groove (12), and the top of the fixed ring (18) is welded with an outer hexagonal contact body (2).

4. The bolt structure with self-locking function according to claim 3, characterized in that: The top of the outer hexagonal contact body (2) is provided with a first recess (3), the top of the inner bolt (7) is welded with a connecting body (6), the top of the connecting body (6) is welded with an anti-skid knob (4), and the top of the anti-skid knob (4) is provided with an inner hexagonal recess (5).

5. The bolt structure with self-locking function according to claim 1, characterized in that: The outer expansion shell (9) comprises a base body (17), the surface of the base body (17) is fixedly sleeved with a strength support layer (16), and the surface of the strength support layer (16) is fixedly sleeved with a reinforced plating layer (15).

6. The bolt structure with self-locking function according to claim 5, characterized in that: The surface of the reinforced plating layer (15) is sprayed with a wear-resistant coating (14), and the wear-resistant coating (14) is specifically a methyl etherification high imino melamine resin emulsion.

7. The bolt structure with self-locking function according to claim 5, characterized in that: The strength support layer (16) is specifically made of hard chromium alloy material, and the reinforced plating layer (15) is specifically made of nickel-phosphorus alloy material.

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