CN216698841U

CN216698841U - Connecting structure

Info

Publication number: CN216698841U
Application number: CN202123292499.2U
Authority: CN
Inventors: 王超; 王紫剑; 赵生旭
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2022-06-07
Anticipated expiration: 2031-12-25
Also published as: WO2023116528A1

Abstract

A connecting structure relates to the technical field of mechanical equipment manufacturing, and comprises a first body (1), a second body (2) and a double-headed staple bolt (3); the first body (1) and the second body (2) are respectively provided with a connecting hole (4) capable of being in interference fit with the double-headed staple (3); the double-end staple bolt (3) is respectively connected with the first body (1) and the second body (2) through the connecting hole (4). The utility model has the following effects: the double-end staple bolt can be hidden in the first body and the second body to complete the connection of the first body and the second body, so that a user cannot easily find the connection part to detach the connection part, and the double-end staple bolt can protect equipment and the user. The bulges on the double-head staple and the blocking parts in the connecting holes can effectively increase the clamping force, so that the first body and the second body are connected more firmly.

Description

Connecting structure

Technical Field

The utility model relates to the technical field of mechanical equipment manufacturing, in particular to a connecting structure.

Background

The traditional plastic part connection is connected by adopting a screw joint or clamping manner, wherein clamping means that corresponding clamping jaws or clamping grooves are respectively arranged at two ends of connection, and the clamping jaws are assembled to be connected together. The clamping mode has the advantages of quick connection and detachability. The screw connection mode refers to screw connection, and the connected piece is connected into a whole by a screw element or a screw part of the connected piece in a detachable connection mode. The common threaded connecting parts include bolts, studs, screws, set screws and the like, and are mostly standard parts. The common advantage of the screw connection and the clamping connection is that the disassembly is convenient, and any person can easily disassemble the plastic part by releasing the screw connection or the clamping connection. There are also significant disadvantages in that many designs do not allow a user to easily disassemble the device, and the exposed screw or snap structure is difficult to achieve sufficient disassembly prevention, so that a new solution is needed in the art to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hidden plastic part connecting structure, which can prevent the surface of connected equipment from being provided with visible screw and buckle connecting structures and prevent danger after disassembly due to curiosity and other reasons.

A connecting structure comprises a first body, a second body and a double-headed staple;

the first body and the second body are provided with connecting holes capable of being in interference fit with the double-headed clamp nails;

the double-end staple passes through the connecting hole respectively in the first body reaches the second body is connected.

The double-end clamp nail is provided with at least two oppositely arranged bulges.

The longitudinal section of the protrusion is trapezoidal.

The double-end staple bolt is the column, the connecting hole is the tube-shape, the biggest radius in double-end staple bolt cross-section with connecting hole cross-section radius's ratio is: 1:0.95-1:0.88.

The connecting hole is internally provided with a clamping part, and the clamping part protrudes out of the inner wall of the connecting hole.

The double-end clamping nail is provided with a barb.

The angle between the surface of the barb, which faces away from the connecting hole, and the axial direction of the double-headed staple is 5-55 degrees.

The number of the connecting holes of the first body and the second body is not less than two.

The first body and/or the second body are made of plastics.

The double-end clamp nail is provided with a separation blade, and the connecting hole further comprises a cavity capable of containing the separation blade.

The first body is a front body of the charging seat, and the second body is a rear body of the charging seat.

The utility model has the following effects: the double-end staple bolt can be hidden in the first body and the second body to complete the connection of the first body and the second body, so that a user cannot easily find the connection part to detach the connection part, and the double-end staple bolt can protect equipment and the user. The bulges on the double-head staple and the blocking parts in the connecting holes can effectively increase the clamping force, so that the first body and the second body are connected more firmly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a sectional view of a connection structure of the present invention.

Fig. 2 is an assembly view of a connection structure of the present invention.

FIG. 3 is a schematic view of a double-headed staple of a connecting structure of the present invention.

Fig. 4 is a schematic structural view of a connection hole of a connection structure according to the present invention.

Fig. 5 is a schematic structural view of a connecting structure cavity according to the present invention.

Fig. 6 is a schematic structural view of a baffle plate of a connecting structure of the present invention.

The figures are labeled as follows:

1-first body, 2-second body, 3-double-head staple, 31-baffle, 4-connecting hole, 41-clamping part and 5-cavity.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

The utility model discloses a connecting structure, which is shown in fig. 1 and 2 and comprises a first body 1, a second body 2 and a double-headed clamp 3;

the first body 1 and the second body 2 are both provided with connecting holes 4 capable of being in interference fit with the double-headed clamp 3;

the double-headed staple 3 is connected to the first body 1 and the second body 2 through the connecting hole 4, respectively.

Many times, the installed equipment is not intended to be easily opened or removed by the user, and existing plastic connectors are often screwed or snapped, and sometimes riveted, into place. The advantages of these connection methods are that the connection part is exposed to the outside, which is convenient for installation and disassembly, and the disadvantage is obvious, namely that the user can easily find the connection part and disassemble it. This can easily cause damage to the device, especially in some scenarios, such as charging stations on new energy vehicles, where the user is easily at risk when opening the charging station structure privately. Therefore, the present invention provides a hidden type connecting structure, wherein one end of the double-headed staple 3 is inserted into the connecting hole 4 of the first body 1, one end of the double-headed staple 3 is clamped with the first body 1 by interference fit, and then the other end of the double-headed staple 3 is clamped with the second body 2, thereby completing the connection of the first body 1 and the second body 2.

In one embodiment, the double-ended staple 3 has at least two oppositely disposed protrusions thereon. As shown in fig. 3, the protrusions can better increase the friction force between the double-headed staple 3 and the connecting hole 4, making it more difficult to separate the connected first body 1 and second body 2.

Furthermore, the longitudinal section of the protrusion is trapezoidal. The radius of the shaft section of the bulge on the double-end clamp nail 3 is reversely increased with the inserting direction, as shown in fig. 3, the longitudinal section of the bulge is trapezoidal, the long side of the trapezoid is close to the middle of the double-end clamp nail 3, and the short side is close to the head of the double-end clamp nail, so that the force is saved when the double-end clamp nail is inserted into the connecting hole 4, and the double-end clamp nail is more difficult to be pulled out from the connecting hole 4 after being inserted.

In some embodiments, the double-headed staple 3 has a cylindrical shape, the connecting hole 4 has a cylindrical shape, and the ratio of the maximum radius of the cross section of the double-headed staple 3 to the radius of the cross section of the connecting hole 4 is: 1:0.95-1:0.88. That is to say, the protrusion of the double-headed clamp 3 is thicker than or equal to the connecting hole 4, so that the first body 1 and the second body 2 can be connected by interference fit, but if the section radius of the thickest part of the protrusion of the double-headed clamp 3 is too large, the connecting hole 4 cannot be inserted, and in order to find a suitable ratio of the section radius of the double-headed clamp 3 to the section radius of the connecting hole 4, the inventor has performed a relevant test by selecting 10 groups of double-headed clamps 3 with different section radii and connecting holes 4 with the same section radius. The double-headed staples 3 were inserted into the connecting holes 4 by applying a force of 2000N, and if they could be completely inserted, they were passed and could not be inserted, they were not passed. When the double-headed staple 3 was pulled out by 500N after the insertion, if the double-headed staple 3 could not be pulled out, the double-headed staple could be pulled out as a pass, and the results are shown in table 1.

Table 1: influence on whether the maximum radius of the section of the double-end staple bolt 3 can be plugged or not compared with the radius of the section of the connecting hole 4

As can be seen from table 1, when the ratio of the maximum radius of the cross section of the double-headed staple 3 to the radius of the cross section of the attaching hole 4 is greater than 1: after 0.88, the double-headed clip 3 cannot be inserted into the connecting hole 3 by a pushing force of 2000N, and is therefore not acceptable. When the ratio of the maximum radius of the section of the double-end clamp 3 to the radius of the section of the connecting hole 4 is less than 1: at 0.93, the double-headed staple 3 was removed from the connecting hole 4 with a 500N removal force, and was also rejected. Therefore, the inventor prefers the ratio of the maximum radius of the cross section of the double-headed staple 3 to the radius of the cross section of the connecting hole 4 to be 1:0.95-1: 0.88. when the protrusions on some double-headed staples 3 are in structures with different thicknesses, the ratio of the maximum radius part of the double-headed staple 3 to the connecting hole 4 cannot be more than 1:0.88 to prevent it from being inserted.

In some embodiments, the connecting hole 4 is provided with a clamping portion 41 inside, as shown in fig. 4, the clamping portion 41 protrudes from the inner wall of the connecting hole 4. The catching portion 41 protrudes toward the inside of the attaching hole 4 to clamp the double-headed clip 3, making the attachment more secure. In some embodiments, the clamping portion 41 may be annular, and is disposed on the inner wall of the connecting hole 4, and is matched with the protrusion on the double-headed staple 3 to achieve a better clamping effect.

In another embodiment, the double-headed staple has barbs thereon. The barbs enable the double-headed staples 3 to be more easily inserted into the coupling holes 4 and to be more difficult to be separated, thereby preventing the coupled devices from being easily disassembled.

Specifically, the angle between the surface of the barb facing away from the connecting hole 4 and the axial direction of the double-headed staple 3 is 5-55 degrees. The surface facing the connecting hole 4 forms an obtuse angle with the axial direction of the double-headed staple 3. If the angle between the surface of the barb back to the connecting hole 4 and the axial direction of the double-end clamping nail 3 is too large, the barb can not be inserted into the connecting hole 4, if the angle is too small, the clamping force is too small, and the double-end clamping nail 3 can be easily pulled out from the connecting hole 4. In order to find a proper angle, the inventor conducts related experiments by selecting 10 groups of different double-headed staples 3, wherein the surface of each group of barbs, which faces away from the connecting hole 4, has a different angle with the axial direction of the double-headed staples 3, and selecting the same connecting hole 4. The double-headed staples 3 were inserted into the connecting holes 4 by applying a force of 2000N, and if the insertion was acceptable, the insertion was not acceptable. After the insertion, the double-headed staples 3 were pulled out by 500N, and if the double-headed staples 3 could not be pulled out, the result was shown in table 2.

Table 2: influence on plugging and unplugging of the face of the barb back to the connecting hole and the angle of the axial direction of the double-headed staple bolt

As can be seen from table 2, when the angle between the surface of the barb facing away from the connecting hole 4 and the axial direction of the double-headed staple 3 is greater than 55 °, the double-headed staple 3 cannot be inserted into the connecting hole 3 under a thrust of 2000N, and is therefore not acceptable. When the angle is less than 5 degrees, the double-headed staple 3 can be separated from the connecting hole 4 under the extraction force of 500N, and the double-headed staple is unqualified. Therefore, the inventor prefers that the face of the barb facing away from the attachment hole 4 is at an angle of 5 ° to 55 ° to the axial direction of the double-headed staple 3.

In some embodiments, the number of the connection holes 4 of the first body 1 and the second body 2 is not less than two, respectively. The number of the coupling holes 4 provided on the first body 1 and the second body 2 may be plural, and the more the coupling is provided, the more firm the coupling is.

In some embodiments, the material of the first body 1 and/or the second body 2 is plastic. The plastic part has certain elasticity, can keep sufficient clamping force to the double-end staple, prevents to be dismantled.

In some embodiments, a stop plate 31 is disposed on the double-headed staple 3, and as shown in fig. 5 and 6, the connecting hole 4 further includes a cavity 5 capable of accommodating the stop plate 31. The separation blade 31 can divide the double-end staple 3 into two parts, and the two parts are respectively inserted into the first body 1 and the second body 2, so that the double-end staple 3 is prevented from being inserted into a certain connecting hole 4 too much. The stop piece 31 may be provided in the middle of the double-headed staple 3, or the two portions of the double-headed staple 3 may be made unequal in length, depending on the case. The edge of the connecting hole 3 is provided with a cavity 5 for accommodating the baffle 31 so that the first body 1 and the second body 2 are connected without a gap, the cavity 5 can be arranged on the first body 1 or the second body 2, or the first body 1 and the second body 2 are respectively provided with a part, and the two parts form a complete cavity 5 for accommodating the baffle 31.

In some embodiments, the first body 1 is a front body of the charging dock, and the second body 2 is a rear body of the charging dock. In other words, the utility model can be particularly used for assembling the split structure of the charging seat of the electric automobile. The body 1 sets up connecting hole 4 respectively behind the charging seat on body 2 behind charging seat before the charging seat, body joint before one end and the charging seat of double-end bail 3, body joint behind another and the charging seat. Like this body and charging seat before the charging seat after this internal corresponding part of installation number, can carry out the joint through a plurality of double-end bail 3, can not leave behind the joint and connect the vestige, not only connect very firmly, more importantly prevents that the user from dismantling the charging seat privately, avoids causing the injury to charging seat and user.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A connecting structure characterized in that: comprises a first body (1), a second body (2) and a double-headed staple (3);

the first body (1) and the second body (2) are provided with connecting holes (4) capable of being in interference fit with the double-headed clamp nails (3);

the double-end staple bolt (3) is respectively connected with the first body (1) and the second body (2) through the connecting hole (4).

2. A connecting structure according to claim 1, wherein: the double-end clamp (3) is provided with at least two oppositely arranged bulges.

3. A connecting structure according to claim 2, wherein: the longitudinal section of the protrusion is trapezoidal.

4. A connecting structure according to claim 2, wherein: double-end bail (3) are the column, connecting hole (4) are the tube-shape, the biggest radius of double-end bail (3) cross-section with the ratio of connecting hole (4) cross-section radius is: 1:0.95-1:0.88.

5. A connecting structure according to claim 2, wherein: the connecting hole (4) is internally provided with a clamping portion (41), and the clamping portion protrudes out of the inner wall of the connecting hole (4).

6. A connecting structure according to claim 1, wherein: the double-head staple (3) is provided with barbs.

7. A connecting structure according to claim 6, wherein: the angle between the surface of the barb, which faces away from the connecting hole (4), and the axial direction of the double-headed staple bolt (3) is 5-55 degrees.

8. A connecting structure according to claim 1, wherein: the number of the connecting holes (4) of the first body (1) and the second body (2) is not less than two.

9. A connecting structure according to claim 1, wherein: the first body (1) and/or the second body (2) are made of plastics.

10. A connecting structure according to claim 1, wherein: set up separation blade (31) on double-end bail (3), connecting hole (4) are still including holding cavity (5) of separation blade (31).

11. A connecting structure according to claim 1, wherein: the first body (1) is a front body of the charging seat, and the second body (2) is a rear body of the charging seat.