CN213419640U

CN213419640U - Connecting device with over-force protection

Info

Publication number: CN213419640U
Application number: CN202021557764.8U
Authority: CN
Inventors: 王道顺
Original assignee: Tianjin Qingcheng Technology Development Co ltd
Current assignee: Tianjin Qingcheng Technology Development Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-06-11
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a connecting device with excess force protection, including screw pole, connecting rod, first screw head and second screw head, first screw head lower surface and connecting rod top fixed connection, screw pole top and second screw head lower fixed surface are connected, the slotted hole has been seted up to second screw head upper surface, connecting rod bottom fixed connection is in the slotted hole bottom, screw pole bottom movable mounting has the nut, the nut upper surface cover is equipped with the packing ring, nut outside cover is equipped with the safety cover. The utility model provides a because of the smooth silk of screw that causes of too violent hard, the problem of the loss of property that rusts and not have the theftproof function to cause that contacts with the external environment for a long time and cause.

Description

Connecting device with over-force protection

Technical Field

The utility model relates to a technical field is made to the screw, specifically is a connecting device with excess force protection.

Background

The screw is mainly used for connecting two workpieces together to play a role of fastening, and is used on common equipment, such as mobile phones, computers, automobiles, bicycles, various machine tools and equipment, and almost all machines. The thread slipping is the condition that in a threaded connecting piece, threads cannot be occluded and the threaded connection cannot be screwed due to thread abrasion caused by overlarge stress or other reasons at the thread connecting part.

The screw that uses at present often causes the screw to slide because of exerting oneself too violently when twisting to make the screw lose use value, secondly, the cap screw in the external environment for a long time often leads to being difficult to take out when the maintenance because of rustting, simultaneously, because of the screw does not possess the theftproof function, often appears stealing the valuable connecting piece of being connected with the screw, causes the loss of property.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a connecting device with excess force protection possesses the excess force protection, prevents to rust and the advantage of theftproof, has solved because of the smooth silk of screw that the too violent led to the fact hard, the problem of rustting and the loss of property that does not have the theftproof function to cause that contacts with the external environment for a long time.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a connecting device with excess force protection, includes screw pole, connecting rod, first screw head and second screw head, first screw head lower surface and connecting rod top fixed connection, screw pole top and second screw head lower fixed surface are connected, the slotted hole has been seted up to the overhead surface of second screw, connecting rod bottom fixed connection is in slotted hole bottom, screw pole bottom movable mounting has the nut, the nut upper surface cover is equipped with the packing ring, nut outside cover is equipped with the safety cover.

Preferably, the connecting rod is of an inverted cone structure.

Preferably, the slotted hole is internally provided with a quincunx cylindrical structure.

Preferably, the upper surface of the washer is provided with anti-slip teeth.

Preferably, the protective cover is matched with the nut, the protective cover is in contact with the nut but not fixed, and the protective cover is made of PE materials.

Preferably, first screw head is hexagon structure, first screw head and nut apparent dimension phase-match.

Preferably, the second screw head has a circular structure.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a through setting up the connecting rod, when twisting the first screw head, after the torsion value reaches a certain degree, the connecting rod of fixed connection between first screw head and the second screw head will break from the upper surface of the second screw head, make first screw head and screw pole separate, reached the overstress protection effect of avoiding the smooth silk of screw, the utility model discloses a through setting up the slotted hole, and die the slotted hole internal shape and be quincunx cylinder structure, after the connecting rod breaks, because the second screw head is circular structure, can't twist, thereby lead to the slotted hole to become new screw head, because the slotted hole surface is quincunx, can't use general spanner to twist the operation, thereby reached the theftproof effect of screw, the utility model discloses a safety cover is set up, and the safety cover adopts PE material to make, and safety cover and nut phase-match, through will the suit on the nut surface after the screw is tightened, the contact between the nut and the external environment is effectively prevented, so that the antirust effect is achieved.

Drawings

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

fig. 2 is a schematic front view of the structure of the present invention;

fig. 3 is a schematic top view of the second screw head according to the present invention.

In the figure: 1. a protective cover; 2. a nut; 3. a screw shaft; 4. a connecting rod; 5. a first screw head; 6. a slot; 7. a second screw head; 8. a gasket.

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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 2, the present invention provides an embodiment: the utility model provides a connecting device with excess force protection, includes screw 3, connecting rod 4, first screw head 5 and

second screw head

7, 5 lower surfaces of first screw head and 4 top fixed connection of connecting rod, 3 tops of screw and 7 lower fixed surface connections of second screw head, slotted hole 6 has been seted up to 7 upper surfaces of second screw head, and 4 bottom fixed connection of connecting rod are in slotted hole 6 bottoms, and connecting rod 4 is the inverted cone structure. Through setting up connecting rod 4, when twisting first screw head 5, after the torsion value reached a certain degree, fixed connection's connecting rod 4 between first screw head 5 and the second screw head 7, will follow second screw head 7 upper surface fracture, makes first screw head 5 and screw rod 3 separate, has reached the over-force protection effect of avoiding the screw to slide. 3 bottom movable mounting of lead screw has nut 2, and first screw head 5 is the hexagon structure, and

first screw head

5 and 2 external dimension phase-matchs of nut. The upper surface of the nut 2 is sleeved with a gasket 8, and the upper surface of the gasket 8 is provided with anti-skid teeth. The outer side of the nut 2 is sleeved with a protective cover 1. The protective cover 1 is matched with the nut 2, the protective cover 1 is in contact with the nut 2 but is not fixed, and the protective cover 1 is made of PE materials. Through setting up safety cover 1 to safety cover 1 adopts the preparation of PE material, and safety cover 1 and nut 2 phase-match, through with 1 suit of safety cover at nut 2 surfaces after the screw up, the effectual contact that has prevented nut 2 and external environment, thereby reached rust-resistant effect.

Referring to fig. 3, the present invention provides an embodiment: a connecting device with an over-force protection function comprises a second screw head 7, wherein a slotted hole 6 is formed in the upper surface of the second screw head 7. The inside of the slot hole 6 is of a quincunx cylindrical structure. Through setting up slotted hole 6 to the inside shape of dead slotted hole 6 is plum blossom shape cylinder structure, after connecting rod 4 fracture, because second screw head 7 is circular structure, can't wrench movement, thereby leads to slotted hole 6 to become new screw head, because slotted hole 6 surface is plum blossom shape, can not use general spanner to twist the operation, thereby has reached the theftproof effect of screw.

The working principle is as follows: the utility model discloses insert 3 one ends of lead screw in the hole that the connecting piece surface was seted up during the use, and rotate packing ring 8 and nut 2 respectively and twist in 3 one ends of lead screw after inserting, twist nut 2 fixed and through another spanner and move first screw head 5, make 3 atress of lead screw to 2 one ends of nut rotate and remove, after the screw is tightened and moment reaches the design numerical value of screw, fracture in the slotted hole 6 of second screw head 7 upper surface is followed to connecting rod 4, take off first screw head 5 this moment, and at 2 suit safety covers 1 of nut, when needing to take out the screw, select with slotted hole 6 assorted special spanner, and insert slotted hole 6 through special spanner and twist and move and can take out the screw.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a connecting device with excess force protection, includes lead screw (3), connecting rod (4), first screw head (5) and second screw head (7), its characterized in that: first screw head (5) lower surface and connecting rod (4) top fixed connection, screw pole (3) top and second screw head (7) lower fixed connection, slotted hole (6) have been seted up to second screw head (7) upper surface, connecting rod (4) bottom fixed connection is in slotted hole (6) bottom, screw pole (3) bottom movable mounting has nut (2), nut (2) upper surface cover is equipped with packing ring (8), nut (2) outside cover is equipped with safety cover (1).

2. A connection device with over-force protection as claimed in claim 1, wherein: the connecting rod (4) is of an inverted cone structure.

3. A connection device with over-force protection as claimed in claim 1, wherein: the inside of the slotted hole (6) is of a quincunx cylindrical structure.

4. A connection device with over-force protection as claimed in claim 1, wherein: and anti-skid teeth are arranged on the upper surface of the gasket (8).

5. A connection device with over-force protection as claimed in claim 1, wherein: the protective cover (1) is matched with the nut (2), and the protective cover (1) is made of PE materials.

6. A connection device with over-force protection as claimed in claim 1, wherein: first screw head (5) are hexagon structure, first screw head (5) and nut (2) appearance size phase-match.

7. A connection device with over-force protection as claimed in claim 1, wherein: the second screw head (7) is of a circular structure.