CN212323239U

CN212323239U - Three-bar vibration-proof self-locking wiring terminal in screw hole

Info

Publication number: CN212323239U
Application number: CN202021228619.5U
Authority: CN
Inventors: 陈建万; 王远国; 江雄
Original assignee: Cixi Wanjie Electronic Co ltd
Current assignee: Cixi Wanjie Electronic Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-01-08
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a three muscle anti-vibration auto-lock binding post in screw hole, including the terminal body, be equipped with the connection terminal that supplies the wire to insert on the terminal body, terminal body upper portion is equipped with the mount pad that supplies the screw to put into, the protrusion is equipped with at least one protruding muscle that is used for restricting screw circumferential direction on the inner wall of mount pad, the top protrusion of mount pad is equipped with a snap ring, the snap ring internal diameter is less than the external diameter of screwhead, the internal diameter of protruding muscle protrusion on the mount pad is less than the internal diameter of snap ring, and set up the cavity that is used for supplying snap ring and/or protruding muscle to warp towards the outside on the outer wall of mount pad, protruding thereby restriction screwhead's circumferential direction, realize the auto-lock; the head of snap ring restriction screw realizes the anticreep, forms the deformation position between the inner wall of cavity and mount pad, and protruding muscle and snap ring that are located on the deformation position can be partly by the extrusion, make things convenient for the assembly and the dismantlement of screw.

Description

Three-bar vibration-proof self-locking wiring terminal in screw hole

Technical Field

The utility model relates to a binding post technical field, concretely relates to three muscle anti-vibration auto-lock binding post in screw hole.

Background

The wiring terminal is an accessory product for realizing electrical connection, and the use amount of the wiring terminal gradually rises along with the increasing industrial automation degree and the stricter and more accurate industrial control requirements.

Especially in electrical equipment, need a large amount of binding post to carry out the circular telegram and connect, in some work production vibrations and unstable operational environment, the screw loosens easily and leads to lead wire and current-carrying fluid contact failure, the condition that the screw drops can appear even, and the terminal is not hard up to cause contact resistance too big, lead to overheated, influence electrical equipment's normal use, and a binding post among the prior art sets up the clamp plate on the screw, thereby spacing realization screw anticreep auto-lock through the mount pad of clamp plate with the screw, but this kind of mode needs additionally to increase a part, and is with high costs, and the screw need exert great power when screwing in and unscrewing, the assembly is inconvenient.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a three muscle anti-vibration auto-lock binding post in screw hole to increase the fastening nature of screw.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a three muscle anti-vibration auto-lock binding post in screw hole, includes the terminal body, be equipped with the connection terminal that supplies the wire to insert on the terminal body, terminal body upper portion is equipped with the mount pad that supplies the screw to put into, the protrusion is equipped with at least one protruding muscle that is used for restricting screw circumference rotation on the inner wall of mount pad, the top protrusion of mount pad is equipped with a snap ring, the snap ring internal diameter is less than the external diameter of screwhead, the internal diameter of protruding muscle protrusion on the mount pad is less than the internal diameter of snap ring, just offer on the outer wall of mount pad and be used for supplying snap ring and/or protruding muscle towards the cavity of outside deformation.

Compared with the prior art, the utility model has the advantages of it is following and beneficial effect:

1. the convex rib is arranged in the mounting seat for the head part of the screw to limit the circumferential rotation of the head part of the screw, so that the looseness of the screw generated by the wiring terminal in a vibration or unstable working environment is reduced, and self-locking is realized;

2. the top of the mounting seat is provided with the clamping ring, the inner diameter of the clamping ring is smaller than the outer diameter of the head of the screw, so that the head of the screw is limited in the mounting seat, and the anti-falling is realized;

3. set up the cavity in the mount pad, form deformation position between the inner wall of cavity and mount pad for when the screw gets into the snap ring and twists in the mount pad, protruding muscle and the snap ring that lie in on the deformation position can be partial by the extrusion, thereby warp the bending in the cavity, make things convenient for the assembly and the dismantlement of screw, and do not influence protruding muscle and snap ring normal down to the limit function of screw head, need not to set up extra part, save the cost.

Further, the quantity of protruding muscle is three, just the even spaced setting of protruding muscle along circumference, three protruding muscle along the interval 120 setting on the mount pad inner wall.

Further, the snap ring comprises an upper guide surface, a limiting surface and a lower guide surface which are sequentially arranged along the opening part of the mounting seat, and the inclination of the upper guide surface is greater than that of the lower guide surface. Through the improvement, the inclination of the upper guide surface is larger, so that the screw head can conveniently enter, and meanwhile, compared with a vertical surface, the lower guide surface also plays a role in guiding the screw head to separate when the screw needs to be taken out.

Further, protruding muscle integral type sets up on the second guide face, just protruding muscle lower extreme extends to the mount pad bottom. Through the improvement, the limiting and locking effect of the convex ribs on the screw head is increased.

Further, the upper portion of the terminal body is arranged in a round table shape, and the wire holder and the mounting seat are coaxially arranged in the round table shape, so that the outer wall of the mounting seat deforms towards the extrusion direction portion of the screw head.

Further, when the screw is in a screwed state, the lower end of the head of the screw is abutted against the bottom of the mounting seat; when the screw is in a loosened state, the upper end of the screw head abuts against the lower guide surface. Through the improvement, the screw head is always limited between the clamping ring and the mounting seat after entering the mounting seat, and the anti-falling is realized.

Preferably, the number of cavity is four, be close to wherein two cavities that are equipped with that the radial outside of two protruding muscle corresponds, two cavities are symmetrical about the line at another protruding muscle and mount pad center in addition, and four cavity circumference intervals set up around the mount pad, and when installation or dismantlement, two protruding muscle can be out of shape towards the cavity internal deformation by the atress, make things convenient for the rotatory twisting of screw to move, and another protruding muscle needs the bigger atress relatively and produces littleer deformation to guarantee the auto-lock under the screw normality.

Further, the cross-section of cavity has two holding surfaces and the face of warping, two holding surface mutually perpendicular, two holding surfaces are connected to the face of warping, just the circular arc that the inner wall that is close to the mount pad set up is personally submitted in the deformation. Through the improvement, the cross section of the cavity is triangular, when the screw is screwed in, the two supporting surfaces correspond to two vertical edges of the triangle to support the whole structure, and the deformation surface of the circular arc corresponds to the longest edge of the triangle, so that the elastic deformation of the inner wall surface of the mounting seat towards the cavity is facilitated.

Further, the screw head external diameter is 3.91mm, the snap ring internal diameter is 3.8mm, the internal diameter that the protruding muscle stretches out at the mount pad inner wall is 3.84mm, the circular arc internal diameter of cavity is 4.8mm, and is preferred, and the internal diameter of snap ring is 3.8mm, and the tip internal diameter of the face of leading on and the main aspects internal diameter of face of leading are 4.05 mm.

Furthermore, a junction box and a conductive elastic sheet are arranged in the junction box, and a chute is concavely arranged on the abutting end face of the conductive elastic sheet and the junction box. Through the improvement, the lead is pressed in the inclined groove or between the inclined groove and the end face, and the stability of contact fit of the lead is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic cross-sectional view of the present invention;

fig. 3 is a schematic structural view of the chamber of the present invention;

fig. 4 is a schematic structural view of the mounting base of the present invention;

in the figure: 1. a terminal body; 2. a wire holder; 3. a mounting seat; 4. a rib is protruded; 5. a snap ring; 5.1, an upper guide surface; 5.2, a limiting surface; 5.3, a lower guide surface; 6. a chamber; 6.1, a supporting surface; 6.2, deforming surfaces; 7. a junction box; 8. a conductive spring plate; 8.1, a chute;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that, although the terms upper, middle, lower, top, end, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another for ease of understanding, and are not used to define any direction or order of limitation.

As shown in fig. 1-4, the three-rib anti-vibration self-locking wiring terminal in the screw hole comprises a terminal body 1, a wiring seat 2 for connecting a lead is arranged on the terminal body 1, an installation seat 3 for placing a screw is arranged at the upper part of the terminal body 1, at least one convex rib 4 for limiting the circumferential rotation of the screw is convexly arranged on the inner wall of the installation seat 3, the cross section of the convex rib 4 is arranged in a circular arc shape and limits the circumferential rotation of the head part of the screw, so that the screw looseness generated by the wiring terminal in a vibration or unstable working environment is reduced, and the self-locking is realized;

a clamping ring 5 is convexly arranged at the top of the mounting seat 3, the inner diameter of the clamping ring 5 is smaller than the outer diameter of the head of the screw, the head of the screw is limited in the mounting seat 3, the anti-falling is realized, and the inner diameter of the convex rib 4 which is convexly arranged on the mounting seat 3 is smaller than the inner diameter of the clamping ring 5, so that the circumferential rotation and the axial movement of the screw in a normal state are further reduced;

a cavity 6 for outward deformation of the clamping ring 5 and/or the convex rib 4 is formed in the outer wall of the mounting seat 3, and a deformation part is formed between the cavity 6 and the inner wall of the mounting seat 3, so that when a screw enters the clamping ring 5 and is screwed in the mounting seat 3, the convex rib 4 and the clamping ring 5 on the deformation part can be partially extruded, and accordingly the screw is deformed and bent towards the inside of the cavity 6; when the screw enters the mounting seat 3, the clamping ring 5 positioned on the deformation part deforms towards one side of the cavity 6; when the screw is screwed, the convex rib 4 positioned on the deformation part deforms towards one side of the cavity 6; thereby make things convenient for the assembly and the dismantlement of screw, and do not influence protruding muscle 4 and snap ring 5 limit function to the screw head under the normal state, need not to set up extra part, save the cost.

Specifically, the quantity of protruding muscle 4 is three, three protruding muscle 4 is on 3 inner walls of mount pad along the setting at interval 120, it is preferred, the quantity of cavity 6 is four, be close to wherein two radial outsides of protruding muscle 4 correspond and be equipped with two cavities 6, two cavities 6 set up the both sides at another protruding muscle 4 about the line symmetry at another protruding muscle 4's center and mount pad 3 center, 6 circumference intervals of four cavities set up around mount pad 3, when installation or dismantlement, two protruding muscle 4 can be atress warp towards cavity 6 internal deformation, make things convenient for the rotatory twisting of screw to move, another protruding muscle 4 needs the less deformation of bigger atress production relatively, thereby guarantee the auto-lock under the screw normality.

Specifically, the snap ring 5 comprises an upper guide surface 5.1, a limiting surface 5.2 and a lower guide surface 5.3 which are sequentially arranged along the opening part of the mounting seat 3, the inclination of the upper guide surface 5.1 is larger than that of the lower guide surface 5.3, the inclination of the upper guide surface 5.1 is larger, the screw head can be conveniently inserted, and meanwhile, when the screw needs to be taken out, the lower guide surface 5.3 also plays a role in guiding the screw head to be separated compared with a vertical surface.

Specifically, 4 integral types of protruding muscle set up on the second guide face, and 4 lower extremes of protruding muscle extend to 3 bottoms of mount pad, increase the spacing locking effect of protruding muscle 4 to the screw head.

Specifically, the upper portion of the terminal body 1 is arranged in a circular truncated cone shape, the wire holder 2 and the mounting seat 3 are coaxially arranged in the circular truncated cone shape, and the head of the screw is deformed by the outer wall of the mounting seat 3 inclined to the extrusion direction portion of the head of the screw.

Specifically, when the screw is in a screwed state, the lower end of the head of the screw is abutted against the bottom of the mounting seat 3; when the screw is in a loosened state, the upper end of the screw head is abutted against the lower guide surface 5.3, so that the screw head is always limited between the clamping ring 5 and the mounting seat 3 after entering the mounting seat 3, and the anti-falling is realized.

Specifically, the cross-section of cavity 6 has two holding surfaces 6.1 and the face of deformation 6.2, two holding surfaces 6.1 mutually perpendicular, two holding surfaces 6.1 are connected to the face of deformation 6.2, and the face of deformation 6.2 is the circular arc that is close to the inner wall setting of mount pad 3, make the cross-section of cavity 6 be triangle-shaped setting, when the screw was twisted, two holding surfaces 6.1 correspond triangle-shaped's two vertical edges, support overall structure, the face of deformation 6.2 of circular arc corresponds triangle-shaped's longest limit promptly, be favorable to mount pad 3's inner wall to face elastic deformation in the cavity 6.

Specifically, the outer diameter of the screw head is 3.91mm, the inner diameter of the snap ring 5 is 3.8mm, the inner diameter of the rib 4 protruding from the inner wall of the mounting seat 3 is 3.84mm, the inner diameter of the arc of the chamber 6 is 4.8mm, preferably, the inner diameter of the snap ring 5 is 3.8mm, and the inner diameter of the small end of the upper guide surface 5.1 and the inner diameter of the large end of the guide surface are 4.05 mm.

Specifically, be equipped with terminal box 7 and electrically conductive shell fragment 8 in the wire holder 2, the indent is equipped with chute 8.1 on the butt terminal surface of electrically conductive shell fragment 8 and terminal box 7, and the lead wire is compressed tightly in chute 8.1 or is compressed tightly between chute 8.1 and terminal surface, increases lead wire contact complex stability.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a three muscle anti-vibration auto-lock binding post in screw hole, includes terminal body (1), be equipped with on terminal body (1) and supply wire connection terminal (2) that insert, terminal body (1) upper portion is equipped with mount pad (3) that supply the screw to put into, its characterized in that: the protruding at least one protruding muscle (4) that are used for restricting screw circumference rotation that is equipped with on the inner wall of mount pad (3), the top protrusion of mount pad (3) is equipped with a snap ring (5), snap ring (5) internal diameter is less than the external diameter of screw head, protruding muscle (4) protrusion internal diameter on mount pad (3) is less than the internal diameter of snap ring (5), just offer on the outer wall of mount pad (3) and be used for supplying snap ring (5) and/or protruding muscle (4) towards outside cavity (6) of deformation.

2. The three-bar anti-vibration self-locking wiring terminal in the screw hole according to claim 1, characterized in that: the number of the convex ribs (4) is three, and the convex ribs (4) are arranged at intervals which are uniform along the circumferential direction.

3. The three-bar anti-vibration self-locking wiring terminal in the screw hole according to claim 1, characterized in that: the snap ring (5) comprises an upper guide surface (5.1), a limiting surface (5.2) and a lower guide surface (5.3) which are sequentially arranged along the opening part of the mounting seat (3), and the inclination of the upper guide surface (5.1) is greater than that of the lower guide surface (5.3).

4. The three-bar anti-vibration self-locking wiring terminal in the screw hole according to claim 3, characterized in that: protruding muscle (4) integral type sets up on the second guide face, just protruding muscle (4) lower extreme extends to mount pad (3) bottom.

5. The three-bar anti-vibration self-locking wiring terminal in the screw hole according to claim 1, characterized in that: the upper portion of the terminal body (1) is arranged in a circular truncated cone, and the wire holder (2) and the mounting seat (3) are coaxially arranged in the circular truncated cone, so that the outer wall of the mounting seat (3) is deformed towards the extrusion direction portion of the head of the screw.

6. The three-bar anti-vibration self-locking wiring terminal in the screw hole according to claim 1, characterized in that: when the screw is in a screwed state, the lower end of the head of the screw is abutted against the bottom of the mounting seat (3); the upper end of the screw head abuts against a lower guide surface (5.3) when the screw is in the loosened state.

7. The three-rib anti-vibration self-locking wiring terminal in the screw hole according to claim 2, characterized in that: the number of the cavities (6) is four, two cavities (6) are arranged near the two convex ribs (4), and one cavity (6) is arranged at two sides of the other convex rib (4).

8. The three-bar anti-vibration self-locking wiring terminal in the screw hole according to claim 1 or 7, characterized in that: the cross-section of cavity (6) has two holding surface (6.1) and deformation face (6.2), two holding surface (6.1) mutually perpendicular, two holding surface (6.1) are connected to deformation face (6.2), just deformation face (6.2) are the circular arc that is close to the inner wall setting of mount pad (3).

9. The three-bar anti-vibration self-locking wiring terminal in the screw hole according to claim 8, characterized in that: the screw head external diameter is 3.91mm, snap ring (5) internal diameter is 3.8mm, the internal diameter that protruding muscle (4) stretched out at mount pad (3) inner wall is 3.84mm, the circular arc internal diameter of cavity (6) is 4.8 mm.

10. The three-bar anti-vibration self-locking wiring terminal in the screw hole according to claim 1, characterized in that: the wiring seat (2) is internally provided with a wiring box (7) and a conductive elastic sheet (8), and the abutting end surfaces of the conductive elastic sheet (8) and the wiring box (7) are inwards provided with inclined grooves (8.1) in an inwards concave mode.