Oil-free phosphating screw

Abstract

The utility model relates to the technical field of screws, and discloses an oil-free phosphating screw which comprises a screw rod used for fixing a connecting piece. The locking mechanism comprises a first clamping column and a second clamping column which are arranged on the screw rod and used for preventing the screw rod from loosening. According to the oil-free phosphating screw, when the oil-free phosphating screw is used, firm connection between connecting pieces is achieved through matching of the screw rod and the threads in the connecting hole and connection of the plum blossom screw and the internal thread structure, and after the screw head is attached to the connecting pieces, the anti-rust structure is used for preventing rust and corrosion of the screw rod. The bottom of the plum blossom screw can push the first wedge-shaped block and the second wedge-shaped block to oppositely slide in the limiting groove and drive the first clamping column and the second clamping column to be clamped into the reserved hole in the connecting hole, the screw rod is effectively prevented from loosening due to long-time use or external force, and the stability and reliability between connecting pieces are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw technical field especially relates to a no oil phosphorization screw. BACKGROUND

[0002] In the field of mechanical connection, screws are commonly used fasteners, widely used in various devices and structures to achieve firm connection between connecting parts.

[0003] The existing screw rust prevention, anticorrosion ability is poor, thereby leading to short life, and does not have locking function when using, thereby under the long time use, easy to loosen. INNOVATION CONTENT

[0004] The utility model relates to a no oil phosphorization screw that aims at solving the shortcomings in the prior art.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a no oil phosphorization screw, comprising:

[0006] Screw rod, used for fixed connecting part;

[0007] Locking mechanism, including the card column one and card column two arranged on the screw rod, used for preventing the loosening of the screw rod;

[0008] Rust prevention structure, used for preventing rust prevention, anticorrosion of the screw rod.

[0009] As a further description of the above technical scheme: the locking mechanism further comprises:

[0010] Wedge block one, arranged in the cavity in the screw rod, used for driving the card column one to move, and one end of the card column one is fixedly connected to one side of the wedge block one;

[0011] Wedge block two, arranged in the cavity in the screw rod, used for driving the card column two to move, and one end of the card column two is fixedly connected to one side of the wedge block two;

[0012] Limiting groove one, arranged in the bottom of the screw rod, used for limiting the wedge block one, and the bottom of the wedge block one is slidably connected to the limiting groove one;

[0013] Limiting groove two, arranged in the bottom of the screw rod, used for limiting the wedge block two, and the bottom of the wedge block two is slidably connected to the limiting groove two;

[0014] Spring, one end is fixedly connected to one side of the wedge block one, and the other end is fixedly connected to one side of the wedge block two, used for keeping the wedge block one and the wedge block two always moving in opposite directions by the action of spring pulling;

[0015] The plum blossom screw is used for moving the wedge block one and the wedge block two oppositely, and the bottom of the plum blossom screw is attached to the upper ends of the wedge block one and the wedge block two.

[0016] The internal thread structure is arranged in the screw rod and is used for fixing the plum blossom screw, and the plum blossom screw is threadedly connected to the internal thread structure.

[0017] The accommodating groove is arranged at the upper end of the screw rod and is used for accommodating the upper end of the plum blossom screw.

[0018] As a further description of the above technical scheme, the clamping column one penetrates the screw rod, and the clamping column two penetrates the screw rod.

[0019] As a further description of the above technical scheme, the upper end of the wedge block one is arranged to be inclined, and the upper end of the wedge block two is arranged to be inclined.

[0020] As a further description of the above technical scheme, the accommodating groove penetrates the upper end of the screw rod, and the accommodating groove is communicated with the internal thread structure.

[0021] As a further description of the above technical scheme, the anti-rust structure comprises:

[0022] The oil-free phosphating layer is uniformly arranged on the outer surface of the screw rod and is used for preventing rust and corrosion of the screw rod.

[0023] The screw head is fixedly connected to the upper end of the screw rod and is used for driving the screw rod to rotate.

[0024] The through hole is arranged on both sides of the screw rod and is used for accommodating the clamping column one and the clamping column two, and the clamping column one and the clamping column two are slidably connected to the through hole.

[0025] As a further description of the above technical scheme, the through hole penetrates the screw rod.

[0026] The utility model has the advantages of the following:

[0027] 1、in the utility model, when the oil-free phosphating screw is used, the screw rod is matched with the thread in the connecting hole, the plum blossom screw is connected with the internal thread structure, the firm connection between the connecting pieces is realized, after the screw head is attached to the connecting piece, the bottom of the plum blossom screw pushes the wedge block one and the wedge block two to slide oppositely in the limiting groove, and the clamping column one and the clamping column two are clamped into the reserved hole in the connecting hole, the loosening of the screw rod due to long-time use or external force is effectively prevented, and the stability and reliability between the connecting pieces are remarkably improved.

[0028] 2、The utility model discloses a phosphating layer without oil is set up, not only improve the hardness and wear resistance of screw rod, still significantly enhanced its rust -resistant and anticorrosive capacity, in humid, corrosive environment, phosphating layer without oil can protect screw rod from the corrosion and oxidation's harm, thereby prolongs the service life of screw. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A cross section of a phosphating screw without oil is provided for the utility model;

[0030] Figure 2 A cross section of a phosphating screw without oil is provided for the utility model Figure One ;

[0031] Figure 3 A cross section of a phosphating screw without oil is provided for the utility model Figure Two ;

[0032] Figure 4 A structure schematic view of a phosphating screw without oil is provided for the utility model.

[0033] Legend:

[0034] 1, screw rod, 201, accommodating groove, 202, internal thread structure, 203, keyhole slot, 204, limit groove one, 205, limit groove two, 206, wedge block one, 207, clamping column one, 208, wedge block two, 209, clamping column two, 210, spring, 301, screw head, 302, through -hole, 303, phosphating layer without oil. DETAILED DESCRIPTION

[0035] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0036] Embodiment 1:

[0037] Referring to as Figures 1 to 4 , a phosphating screw without oil is provided, which comprises a screw rod 1 for fixing a connecting piece, the screw rod 1 comprises a locking mechanism, comprising clamping column one 207 and clamping column two 209 arranged on the screw rod 1, for preventing the loosening of the screw rod 1.

[0038] As a preferred implementation, the locking mechanism further comprises: a wedge block one 206 arranged in the cavity in the screw rod 1 for driving the clamping column one 207 to move, and one end of the clamping column one 207 is fixedly arranged on one side of the wedge block one 206; a wedge block two 208 arranged in the cavity in the screw rod 1 for driving the clamping column two 209 to move, and one end of the clamping column two 209 is fixedly arranged on one side of the wedge block two 208; a limiting groove one 204 arranged at the bottom of the screw rod 1 for limiting the wedge block one 206, and the bottom of the wedge block one 206 is slidingly connected to the limiting groove one 204; a limiting groove two 205 arranged at the bottom of the screw rod 1 for limiting the wedge block two 208, and the bottom of the wedge block two 208 is slidingly connected to the limiting groove two 205; a spring 210, one end of which is fixedly arranged on one side of the wedge block one 206 and the other end of which is fixedly arranged on one side of the wedge block two 208, for always keeping the wedge block one 206 and the wedge block two 208 moving in opposite directions by the pulling action of the spring 210; a hexagonal screw 203 for driving the wedge block one 206 and the wedge block two 208 to move in opposite directions, and the bottom of the hexagonal screw 203 is attached to the upper end of the wedge block one 206 and the wedge block two 208; an internal thread structure 202 arranged in the screw rod 1 for fixing the hexagonal screw 203, and the hexagonal screw 203 is threadedly connected to the internal thread structure 202; and a containing groove 201 arranged at the upper end of the screw rod 1 for containing the upper end of the hexagonal screw 203.

[0039] It should be noted that the lower end of the hexagonal screw 203 is conical, the shapes of the limiting groove one 204 and the limiting groove two 205 are T-shaped, and the lower ends of the wedge block one 206 and the wedge block two 208 are T-shaped to fit the limiting groove one 204 and the limiting groove two 205.

[0040] As a preferred implementation, the clamping column one 207 penetrates the screw rod 1, and the clamping column two 209 penetrates the screw rod 1.

[0041] As a preferred implementation, the upper end of the wedge block one 206 is inclined, and the upper end of the wedge block two 208 is inclined.

[0042] As a preferred implementation, the containing groove 201 penetrates the upper end of the screw rod 1, and the containing groove 201 is in communication with the internal thread structure 202.

[0043] Embodiment 2:

[0044] On the basis of Embodiment 1, in order to further improve the service life of the screw, an anti-rust structure is arranged on the screw rod 1.

[0045] As a preferred implementation, the anti-rust structure is used to prevent rust and corrosion of the screw rod 1.

[0046] As a preferred embodiment, the anti-rust structure comprises: an oil-free phosphating layer 303 uniformly arranged on the outer surface of the screw rod 1 for preventing rust and corrosion of the screw rod 1; a screw head 301 fixedly arranged at the upper end of the screw rod 1 for driving the screw rod 1 to rotate; and through holes 302 arranged on both sides of the screw rod 1 for accommodating the clamping column one 207 and the clamping column two 209, and the clamping column one 207 and the clamping column two 209 are slidably connected to the through holes 302.

[0047] It should be noted that the oil-free phosphating layer 303 is arranged to immerse the cleaned screw rod 1 in a phosphate solution, and a dense phosphate film is formed on the surface of the screw rod 1 through a chemical reaction, thereby improving the rust and corrosion resistance. The various components in the device can be provided with the oil-free phosphating layer 303 as required, and the shape of the screw head 301 is hexagonal.

[0048] As a preferred embodiment, the through holes 302 penetrate the screw rod 1.

[0049] Working principle: in use, first, the connecting holes on the two connecting members are aligned, then the screw rod 1 is placed in the connecting holes, and then the wrench is used to rotate the screw head 301, the screw head 301 drives the screw rod 1 to rotate, and the screw rod 1 moves inward through the threads in the connecting holes, and when the screw head 301 is attached to the connecting member, the reserved hole in the connecting hole and the through holes 302 on both sides of the screw rod 1 are aligned, then the torx screw 203 is placed on the internal thread structure 202 and is rotated using the torx screw 203 knife, the torx screw 203 is connected to the internal thread structure 202 through the threads and moves, and when the bottom of the torx screw 203 is attached to the upper end of the wedge block one 206 and the wedge block two 208, the wedge block one 206 and the wedge block two 208 are driven to slide on the limiting groove one 204 and the limiting groove two 205 and pull the spring 210, the wedge block one 206 and the wedge block two 208 drive the clamping column one 207 and the clamping column two 209 to slide to one side on the through holes 302, and when the clamping column one 207 and the clamping column two 209 are clamped into the reserved hole in the connecting hole, the upper end of the torx screw 203 is located in the accommodating groove 201, thereby preventing the screw rod 1 from loosening after long-term use through the clamping of the clamping column one 207 and the clamping column two 209 in the reserved hole, and improving the stability between the connecting members. The oil-free phosphating layer 303 further improves the rust and corrosion resistance of the screw rod 1, thereby prolonging the service life of the screw rod 1.

[0050] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. An oil-free phosphated screw, characterized in that: The utility model relates to a screw rod (1) for fixed connection piece, locking mechanism including the card post one (207) and card post two (209) of arrangement on screw rod (1) are used for preventing the loosening of screw rod (1), the rustproof structure for preventing the rustproof, anticorrosion of screw rod (1). The locking mechanism further comprises: a wedge block one (206) arranged in a cavity in the screw rod (1) for driving the card post one (207) to move, and one end of the card post one (207) is fixedly arranged on one side of the wedge block one (206); a wedge block two (208) arranged in a cavity in the screw rod (1) for driving the card post two (209) to move, and one end of the card post two (209) is fixedly arranged on one side of the wedge block two (208); 2. A dry phosphated screw as defined in claim 1, wherein: a limiting groove one (204) opened and arranged at the bottom of the screw rod (1) for limiting the wedge block one (206), and the bottom of the wedge block one (206) is slidingly connected to the limiting groove one (204); a limiting groove two (205) opened and arranged at the bottom of the screw rod (1) for limiting the wedge block two (208), and the bottom of the wedge block two (208) is slidingly connected to the limiting groove two (205); a spring (210) having one end fixedly arranged on one side of the wedge block one (206) and the other end fixedly arranged on one side of the wedge block two (208) for keeping the wedge block one (206) and the wedge block two (208) always in opposite contact movement by the pulling effect of the spring (210); a star-shaped screw (203) for driving the wedge block one (206) and the wedge block two (208) to move in opposite directions, and the bottom of the star-shaped screw (203) is in contact with the upper ends of the wedge block one (206) and the wedge block two (208); an internal thread structure (202) opened and arranged in the screw rod (1) for fixing the star-shaped screw (203), and the star-shaped screw (203) is threadedly connected to the internal thread structure (202); a containing groove (201) opened and arranged at the upper end of the screw rod (1) for containing the upper end of the star-shaped screw (203). The card post one (207) penetrates the screw rod (1), and the card post two (209) penetrates the screw rod (1). The upper end of the wedge block one (206) is inclined, and the upper end of the wedge block two (208) is inclined. The containing groove (201) penetrates the upper end of the screw rod (1), and the containing groove (201) is in communication with the internal thread structure (202).

3. A dry phosphated screw as defined in claim 2, wherein: The rustproof structure comprises:

4. A dry phosphated screw as defined in claim 3, wherein: an oil-free phosphating layer (303) uniformly arranged on the outer surface of the screw rod (1) for preventing rust and corrosion of the screw rod (1); 5. A dry phosphated screw as defined in claim 4, wherein: a screw head (301) fixedly arranged at the upper end of the screw rod (1) for driving the screw rod (1) to rotate; 6. A dry phosphated screw as defined in claim 5, wherein: a through hole (302) opened and arranged on both sides of the screw rod (1) for containing the card post one (207) and the card post two (209), and the card post one (207) and the card post two (209) are slidingly connected to the through hole (302). The through hole (302) penetrates the screw rod (1). ​ ​ 7. A dry phosphated screw as defined in claim 6, wherein: ​

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