CN211259311U

CN211259311U - Combined connecting piece

Info

Publication number: CN211259311U
Application number: CN202020024630.3U
Authority: CN
Inventors: 熊家庆
Original assignee: Yuhuan Shiyu Machinery Co ltd
Current assignee: Yuhuan Shiyu Machinery Co ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-08-14
Anticipated expiration: 2030-01-06

Abstract

The utility model provides a built-up connection spare belongs to the connecting piece field. The built-up connection spare, including nut body and packing ring, the packing ring that has on the nut body and is used for blockking the packing ring keeps off the edge, built-up connection spare still includes the elastic ring that the internal diameter can change, the elastic ring snare is located on the nut body, the spacing portion that has restriction elastic ring axial motion on the nut body, spacing portion can block the elastic ring and break away from the nut body, the packing ring inner wall has and is flaring shape effect face one towards the elastic ring direction, minimum internal diameter in the packing ring is less than the minimum external diameter of elastic ring, when the packing ring has the trend of breaking away from, the elastic ring can be squeezed to effect face one, make the elastic ring have the trend of being cramped. This built-up connection spare has solved current packing ring and nut body coupling unstability, the scheduling problem that easily drops.

Description

Combined connecting piece

Technical Field

The utility model belongs to the connecting piece field relates to built-up connection spare.

Background

The combined nut is a commonly used connecting piece, can be called as hub nut or sleeve nut again, locking type combined nut is one of them common nut type, its structure mainly includes nut body and packing ring, packing ring circumference swing joint is on the nut body, the packing ring is as the setting element when reinforcing nut body screws and the locking piece after screwing, indispensable effect has, and because combined nut installation department is special, the vibration phenomenon takes place occasionally, lead to the axial relative force often to appear between packing ring and the nut body, because the design defect of the corresponding structure of current combined nut, and then lead to packing ring and nut body to break away from easily.

If the application number is 2014206280622, the application date is 2014, 10 and 28, the utility model discloses a hub nut assembly of an automobile hub, which records a hub nut assembly of an automobile hub, and comprises a nut main body, a dustproof sealing cover and a guiding fixed washer, wherein the nut main body forms a big end and a small end, the big end is a hexagonal flange, and the small end is a circular protective sleeve; an inner hole of the nut body is provided with an internal thread; a dustproof sealing cover is fixedly arranged in the end face hole of the hexagonal flange; the guide fixing gasket is sleeved on the circular protective sleeve of the nut main body; a step surface is formed at the connecting part of the hexagonal flange and the round protective sleeve; the root of the round protective sleeve forms a snap ring structure, and the nut main body is connected with the guide fixing washer through the snap ring structure.

The utility model has simple installation and operation and easy positioning of the automobile hub; through the tight fit of the gasket and the automobile hub, the displacement of the automobile hub can be reduced, and the collision with a hub bolt can be avoided, so that the service life of safe use can be ensured, but according to the record of claim 4, an annular groove is formed in the inner ring of the guide fixing washer, and the axial dimension of the annular groove is larger than that of the snap ring structure; the clamping ring structure is positioned in the annular groove, so that the guide fixing washer can move on the nut main body along the axial direction; the motion range of direction stationary washer is decided by the axial dimension of annular groove, and it can be known that, direction stationary washer and nut main part realize both axial anticreep function through extrusion fit, but this kind of structure appears connection structure failure after vibration or long-term the use easily to lead to the problem emergence that both axial break away from, cooperation structure's life-span and stability are short of.

The present application is proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists among the prior art, provide built-up connection spare, this built-up connection spare structural design is ingenious, and packing ring firm in connection has solved current packing ring and this body coupling of nut unstability, the scheduling problem that easily drops.

The purpose of the utility model can be realized by the following technical proposal: the combined connecting piece comprises a nut body and a washer, wherein the nut body is provided with a washer blocking edge used for blocking the washer, and the combined connecting piece is characterized by further comprising an elastic ring with a variable inner diameter, the elastic ring is sleeved on the nut body, the nut body is provided with a limiting part used for limiting the axial movement of the elastic ring, the limiting part can block the elastic ring from being separated from the nut body, the inner wall of the washer is provided with a first action surface which is flared towards the direction of the elastic ring, the minimum inner diameter in the washer is smaller than the minimum outer diameter of the elastic ring, and when the washer has a separation trend, the first action surface can extrude the elastic ring, so that the elastic ring has a hooping trend.

The end of the artificial regulation nut body, on which the elastic ring is arranged, is the bottom end, and the other end is the top end. The washer ledge may be integral with the nut body and functions to limit upward axial movement of the washer. The elastic ring is sleeved above the limiting part through the limiting part. The packing ring can play the positioning action to the subassembly when this sub-assembly of installation, prevents that the nut body from in non-axial direction spiro union, and the installation back because the packing ring links to each other with the nut body, and the packing ring produces pretension effort to the nut body, consequently can play the whole locking effect of connecting piece. During the installation, at first embolia the packing ring from nut body bottom to the packing ring and keep off along department and the laminating, then get into packing ring inner chamber department and overlap on the nut body with the elastic ring through spacing portion, the elastic ring is located the packing ring below promptly, the elastic ring is by spacing portion restriction decurrent axial motion, again because of the minimum internal diameter in the packing ring is less than the minimum external diameter of elastic ring, the minimum external diameter of elastic ring indicates that the elastic ring is compressed to the size of limit on the nut body, consequently under the exogenic action, even the elastic ring is compressed to the limit, because size relation, the packing ring can't break away from the nut body beyond the elastic ring. The inner diameter of the elastic ring can be changed, namely, when the elastic ring is pressed, the elastic ring is tightened, and when the pressing force is removed, the elastic ring is loosened.

In addition, because the flaring direction of action face one is towards the elastic ring, consequently when the packing ring has the trend of outwards breaking away from, action face one extrudes the elastic ring, and the inclined plane characteristic of action face one makes the elastic ring receive non-axial tilting force, make the elastic ring can be banded by the atress fast, firm effect spacing portion, thereby appeared and had when the trend that the packing ring breaks away from toward the outside, its phenomenon tighter to the tight power of the elastic ring of banding, and then just formed axial tension more big, then the elastic ring is tighter, the benign trend that the packing ring is more unlikely to break away from spacing portion, make the stability of being connected between packing ring and the nut body obtain very big reinforcing.

In the combined connecting piece, the limiting part is annular, the top of the limiting part is provided with the second action surface in a flaring shape, the elastic ring is placed on the second action surface, and the flaring directions of the first action surface and the second action surface are the same.

The flaring direction syntropy setting of action face two and action face one makes spacing portion top can laminate the elastic ring, more is favorable to the cramping of elastic ring.

In the combined connecting piece, the bottom of the limiting part is provided with the flaring-shaped guide surface, and the flaring direction of the guide surface is opposite to that of the action surface.

When the elastic ring is sleeved from the bottom end of the nut body and enters along the limiting part after passing through the guide surface, the guide surface plays a role in guiding the movement of the elastic ring.

In the combined connecting piece, the limiting part is annular, the top of the limiting part is provided with the second action surface in a flaring shape, the elastic ring is placed on the second action surface, and the flaring directions of the first action surface and the second action surface are opposite.

In practice, the shape and the orientation of the second action surface have multiple choices, if the second action surface is arranged to be in a necking shape opposite to the flaring shape, a concave accommodating groove is formed between the second action surface in the reverse necking shape and the nut body, the partial area of the elastic ring is positioned in the accommodating groove, and when the first action surface extrudes the elastic ring, the accommodating groove has a limiting effect on the elastic ring, and the elastic ring can be prevented from being separated to play a role.

In the above-mentioned combined connector, at least the two action surfaces in the limiting part are located in the inner cavity of the gasket.

And compared with the two action surfaces which are positioned outside the gasket, the two action surfaces which are positioned inside the gasket are beneficial to controlling the axial movement displacement of the gasket.

In the above-mentioned combined connecting piece, the elastic ring is an opening.

In this scheme, the elastic ring is the opening circle, and both ends are the dislocation structure setting, in the reality, also can be the elastic ring of other structures.

In the above-mentioned composite connecting member, the elastic ring is made of 45 steel.

45 steel is oil steel.

Compared with the prior art, the combined connecting piece has the following advantages:

1. the combined connecting piece enables the elastic ring to be subjected to non-axial oblique force through the inclined plane characteristics of the elastic ring and the action surface I, and the greater the formed axial tension is, the tighter the elastic ring is, and the more the gasket cannot be separated from the benign trend of the limiting part.

2. This built-up connection spare makes spacing portion top can laminate or inject the elastic ring through two designs of action faces, more is favorable to hooping of elastic ring.

3. This built-up connection spare overturns traditional hard extrusion fit structure, need not to adopt the extrusion fit mode to install, utilizes the throat and the flaring of elastic ring to realize the installation, makes convenient assembling.

Drawings

FIG. 1 is a sectional view of the first embodiment.

Fig. 2 is a sectional view showing the structure of a washer in the present composite connector.

FIG. 3 is a cross-sectional view of the gasket and its surrounding structure according to one embodiment.

Fig. 4 is a sectional view showing the structure of the gasket pressing the elastic ring according to the first embodiment (the arrow indicates the direction in which the elastic ring is applied).

FIG. 5 is a cross-sectional view of the gasket and its periphery according to a second embodiment.

Fig. 6 is an enlarged view of a structure of the region a in fig. 3.

Fig. 7 is an enlarged view of a structure of a region B in fig. 5.

List of reference numerals

1. A nut body;

1a, a gasket blocking edge;

1b, a limiting part;

1b1 and an action surface II;

1b1a, accommodating tank;

1b2, guide surface;

1b3, transition section;

2. a gasket;

2a, an action surface I;

3. an elastic ring.

Detailed Description

Example one

As shown in fig. 1 to 4 and 6, the composite connector includes a nut body 1 and a washer 2, the nut body 1 has a washer retaining edge 1a for retaining the washer 2, the composite connector further includes an elastic ring 3 with a variable inner diameter, the elastic ring 3 is sleeved on the nut body 1, the nut body 1 has a limiting portion 1b for limiting the axial movement of the elastic ring 3, the limiting portion 1b can prevent the elastic ring 3 from separating from the nut body 1, the inner wall of the washer 2 has an action surface 2a flaring toward the elastic ring 3, the minimum inner diameter in the washer 2 is smaller than the minimum outer diameter of the elastic ring 3, and when the washer 2 has a separation tendency, the action surface 2a can press the elastic ring 3, so that the elastic ring 3 has a tendency of being tightened. The end of the nut body 1 provided with the elastic ring 3 is a bottom end, and the other end is a top end. The washer ledge 1a may be integral with the nut body 1 and functions to limit upward axial movement of the washer 2. The elastic ring 3 is sleeved on the limiting part 1b through the limiting part 1 b. The packing ring 2 can play the positioning action to the subassembly when this sub-assembly of installation, prevents that nut body 1 from in non-axial direction spiro union, and the installation back because packing ring 2 links to each other with nut body 1, and packing ring 2 produces the pretension effort to nut body 1, consequently can play the whole locking effect of connecting piece. During installation, firstly, the gasket 2 is sleeved into the gasket blocking edge 1a from the bottom end of the nut body 1 and attached, then the elastic ring 3 enters the inner cavity of the gasket 2 through the limiting part 1b and is sleeved on the nut body 1, namely, the elastic ring 3 is positioned below the gasket 2, the elastic ring 3 is limited by the limiting part 1b to move axially downwards, and the minimum inner diameter in the gasket 2 is smaller than the minimum outer diameter of the elastic ring 3, and the minimum outer diameter of the elastic ring 3 refers to the size of the elastic ring 3 compressed to the limit on the nut body 1, so that under the action of external force, even if the elastic ring 3 is compressed to the limit, the gasket 2 cannot be separated from the nut body 1 beyond the elastic ring 3 due to the size relation. The inner diameter of the elastic ring 3 can be changed in the sense that when the elastic ring 3 is pressed, the elastic ring 3 is tightened, and when the pressing force is removed, the elastic ring 3 is loosened.

In addition, because the flaring direction of the first action surface 2a faces the elastic ring 3, when the gasket 2 has the tendency of outwards breaking away, the first action surface 2a extrudes the elastic ring 3, and the inclined surface characteristic of the first action surface 2a enables the elastic ring 3 to be subjected to non-axial tilting force, so that the elastic ring 3 can be quickly stressed and tightened, and the limiting part 1b is firmly acted, thereby the phenomenon that the more the gasket 2 has the tendency of outwards breaking away, the tighter the tightening force of the elastic ring 3, the larger the axial tension is formed, the tighter the elastic ring 3 is, the more the gasket 2 cannot break away from the benign tendency of the limiting part 1b, and the connection stability between the gasket 2 and the nut body 1 is greatly enhanced.

The limiting part 1b is annular, the top of the limiting part is provided with a second flared acting surface 1b1, the elastic ring 3 is placed on the second acting surface 1b1, and the flaring directions of the first acting surface 2a and the second acting surface 1b1 are the same. The flaring direction syntropy setting of two active surfaces 1b1 and active surface 2a makes spacing portion 1b top can laminate elastic ring 3, more is favorable to elastic ring 3 to cramp. The bottom of the limiting part 1b is provided with a flared guide surface 1b2, and the flaring direction of the guide surface 1b2 is opposite to the first action surface 2 a. When the elastic ring 3 is sleeved from the bottom end of the nut body 1 and enters along the limiting part 1b after passing through the guide surface 1b2, the guide surface 1b2 plays a role in guiding the movement of the elastic ring 3. The longitudinal section of the limiting part 1b is an isosceles trapezoid or a similar isosceles trapezoid, the similar isosceles trapezoid means that the lengths of two sides are different, a transition section 1b3 is arranged between the guide surface 1b2 and the second action surface 1b1, and the elastic ring 3 is in contact with the second action surface 1b1 through the transition section 1b 3. The whole limiting part 1b is positioned in the inner cavity of the gasket 2, and the axial movement displacement of the gasket 2 can be controlled. The elastic ring 3 is an opening. In this scheme, elastic ring 3 is the opening circle, and both ends are the dislocation structure setting, and in reality, also can be the elastic ring 3 of other structures, elastic ring 3 is made by 45 steel, and 45 steel is the oil steel promptly.

Example two

As shown in fig. 5 and 7, the present embodiment is different from the first embodiment in that: the limiting part 1b is annular, the top of the limiting part is provided with a second flared acting surface 1b1, the elastic ring 3 is placed on the second acting surface 1b1, and the flaring directions of the first acting surface 2a and the second acting surface 1b1 are opposite. The second active surface 1b1 is set to be in a necking shape opposite to the flaring shape, a concave accommodating groove 1b1a is formed between the second active surface 1b1 in the inverted necking shape and the nut body 1, a partial area of the elastic ring 3 is located in the accommodating groove 1b1a, when the first active surface 2a extrudes the elastic ring 3, the accommodating groove 1b1a has a limiting effect on the elastic ring 3, and can play a role in preventing the elastic ring 3 from being separated, so that the adaptability change of the structure of other components caused by processing the second active surface 1b1 is not repeated and is common knowledge of technicians in the field.

Details of structures, materials, specific dimensions and principles of components not mentioned in the present specification are well known in the prior art or known to those skilled in the art, and are not repeated herein.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The combined connecting piece comprises a nut body and a washer, wherein the nut body is provided with a washer blocking edge used for blocking the washer, and the combined connecting piece is characterized by further comprising an elastic ring with a variable inner diameter, the elastic ring is sleeved on the nut body, the nut body is provided with a limiting part used for limiting the axial movement of the elastic ring, the limiting part can block the elastic ring from being separated from the nut body, the inner wall of the washer is provided with a first action surface which is flared towards the direction of the elastic ring, the minimum inner diameter in the washer is smaller than the minimum outer diameter of the elastic ring, and when the washer has a separation trend, the first action surface can extrude the elastic ring, so that the elastic ring has a hooping trend.

2. The built-up connection spare of claim 1, characterized in that, spacing portion is the annular and the top has the effect face two that is flaring shape, and the elastic ring is placed in the effect face two, and the flaring direction of effect face one and effect face two is the same.

3. The built-up connection element according to claim 1 or 2, wherein the bottom of the limiting portion has a flared guide surface, and the flaring direction of the guide surface is opposite to that of the action surface.

4. The built-up connection spare of claim 1, characterized in that, the spacing portion is ring-shaped and the top has the effect face two that is flaring shape, and the elasticity circle is placed in the effect face two, the flaring direction of effect face one and effect face two is opposite.

5. The modular connector of claim 2 or 4 wherein at least the active surface of the stop is located within the washer cavity.

6. The modular connector of claim 1 or 2 or 4 wherein the resilient ring is an opening.

7. A composite connection according to claim 1, 2 or 4, wherein said resilient ring is made of 45 steel.