Connecting piece

Abstract

The invention provides a connecting piece, and relates to the technical field of installation, the connecting piece comprises a first part (100), the outer end face (110) of the first part (100) is provided with a first hole (120), the side, away from the outer end face (110), of the first part (100) is provided with a second part (200) in an extending mode, and the peripheral face of the second part (200) is provided with a plurality of second holes (210); the first hole (120) penetrates through the first part (100), extends towards the second part (200) along the first part (100) and is communicated with the second hole (210); a plurality of first groove bodies (220) are further formed in the peripheral face of the second part (200), extend along the second part (200) and penetrate through the first part (100), and therefore a through groove is formed. The connecting piece is flexible and convenient to install, high in connecting strength and wide in market prospect.

Description

Technical Field

[0001] The present invention relates to the field of installation technology, and more particularly to a connecting piece. Background Art

[0002] A motorhome is a special vehicle that combines driving and living functions. Its living function is inseparable from furniture. In order to reduce the weight of the vehicle and provide good thermal insulation performance, the body of the motorhome usually adopts a sandwich panel structure consisting of panel-core layer-panel. However, due to the insufficient connection strength of its core layer (thermal insulation layer), furniture cannot be directly connected to it with fasteners.

[0003] To address the above-mentioned problem, a commonly used solution in the prior art is to pre-embed metal inserts in the core layer of the sandwich panel of the car body to improve the local connection strength. The process path is: grooves are pre-cut on the core layer, inserts are embedded in the grooves, and panels are bonded on both sides of the core layer. The inserts are reliably fixed by wrapping them in the panels. In this way, the furniture can be reliably connected to the inserts through fasteners, and thus reliably connected to the car body. However, this method has the following problems: after the entire sandwich panel is completed, if an insert is found to be missing at a certain position or a new insert needs to be added during subsequent installation, the panels of the sandwich panel must be disassembled, which is cumbersome and has poor workability, and can easily cause the entire sandwich panel to be scrapped.

[0004] To address the above technical issues, in order to facilitate the addition of inserts to the completed sandwich panels, an ultrasonic welding technology is currently available in the art: a mounting groove is provided at the location where connection is required, a high-strength plastic insert is inserted into the mounting groove, and an ultrasonic generator is applied to the corresponding area to melt the core layer in the local area and the burrs on the end of the plastic insert. After cooling and solidification, the insert can be reliably bonded to the mounting groove. However, this process requires special equipment, is costly, and is complex to operate, resulting in low efficiency.

[0005] In summary, there is an urgent need to develop a new type of connector to solve the above-mentioned technical problems. Summary of the Invention

[0006] In view of this, the present invention provides a connector that can at least partially solve the problems existing in the prior art. In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: A connecting piece, suitable for being installed in a mounting groove, is characterized by comprising: The first part (100) is provided with a first hole (120) at its outer end face (110), and a second part (200) is extended from the side of the first part (100) away from the outer end face (110), and the outer peripheral surface of the second part (200) is provided with a plurality of second holes (210); the first hole (120) penetrates the first part (100) and extends along the first part (100) to the second part (200) and communicates with the second hole (210); the outer peripheral surface of the second part (200) is further provided with a plurality of first groove bodies (220), which extend along the second part (200) and penetrate the first part (100), thereby forming a through groove.

[0007] Further, the first part (100) is closely matched with the mounting groove, and the profile size of the first part (100) is larger than that of the second part (200).

[0008] Further, the outer peripheral surface of the second part (200) is further provided with a plurality of second groove bodies (230), which extend along the second part (200) to the inner end face (130) of the first part (100), thereby forming a semi-closed groove; the first groove body (220) and the second groove body (230) are arranged in parallel.

[0009] Further, the second part (200) is provided with an inwardly retracted step face (240) at the end away from the first part (100), and the second hole (210) is located on the step face (240).

[0010] Preferably, the first hole (120) extends in the second part (200) but does not penetrate the second part (200).

[0011] Preferably, the first hole (120) comprises a flared portion (121) and a main body portion (122) in sequence from the outer end face (110) of the first part (100) inwardly, and the flared portion (121) has a larger radial dimension than the main body portion (122).

[0012] As a further preferred, the cross-sectional shape of the main body portion (121) is square.

[0013] Preferably, the second hole (210) is composed of two perpendicular intersecting through holes.

[0014] Preferably, the second part (200) is provided with a plurality of weight-reducing holes (250) at the end face away from the first part (100).

[0015] Preferably, the connecting piece is integrally injection molded.

[0016] The present application has the following obvious advantages compared with the prior art: Through the arrangement of the first hole, the second hole, the first groove body and the second groove body, the glue solution can be quickly and sufficiently filled into the gap between the connecting piece and the mounting groove, the requirement for equipment is low, the operation is convenient, the efficiency is high, and the connection strength is high; The first groove body can be used to intuitively judge the glue injection condition, and the reliability of the connection is ensured. The connecting piece can be designed in a standardized manner, matched with a special glue injection tool, and quick installation can be realized by accurately controlling the glue injection time, and the installation efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a whole structure diagram of the connecting piece of the present application; Figure 2 is a whole structure diagram of the present application from another perspective; Figure 3 is a front view of the present application; Figure 4 is a sectional view of the present application along the direction of A-A; Figure 5 is a top view of the present application; Figure 6 is a whole structure diagram of another embodiment of the present application; Figure 7 is a whole structure diagram of another embodiment of the present application from another perspective; Figure 8 is a schematic diagram of the present application when installed in a sandwich panel wall body.

[0018] Reference signs: 100, first part, 110, outer end face, 120, first hole, 121, flared portion, 122, main body portion, 130, inner end face; 200, second part, 210, second hole, 220, first groove body, 230, second groove body, 240, step surface, 250, weight-reducing hole. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0020] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] The present application will be specifically introduced below in combination with the drawings and specific embodiments. Embodiment one

[0023] As shown in Figures 1 to 5 A connecting piece suitable for being mounted in a mounting groove, comprising: A first part (100), an outer end surface (110) of the first part (100) is provided with a first hole (120), a side of the first part (100) away from the outer end surface (110) is extended and provided with a second part (200), an outer peripheral surface of the second part (200) is provided with a plurality of second holes (210); The first hole (120) penetrates the first part (100) and extends along the first part (100) to the second part (200), and communicates with the second hole (210); The outer peripheral surface of the second part (200) is further provided with a plurality of first groove bodies (220), the first groove bodies (220) extend along the second part (200) and penetrate the first part (100), thereby forming a through groove.

[0024] Through the above arrangement, glue is injected into the first hole (120) manually or by machine, and the glue enters the second hole (210) along the first hole (120), overflows along the second hole (210) and fills the gap between the connector and the mounting groove, thereby achieving bonding and fixing of the connector; in this process, the first trough body (220) plays the role of exhausting air on the one hand, facilitating the glue to discharge the air in the gap, and on the other hand plays the role of guiding the glue, so that the glue can quickly and evenly fill the gap between the connector and the mounting groove along the first trough body (220), thereby ensuring a sufficient bonding area. In addition, the operator can control the time of glue injection by observing the flow of the glue in the first trough body (220), thereby improving work efficiency.

[0025] The cross-sectional shape of the connecting piece in this embodiment is preferably a runway shape, which can withstand higher loads and is more reliable and durable.

[0026] Furthermore, the first part (100) is tightly matched with the mounting groove, that is, the outline dimensions of the two are roughly the same. With this arrangement, when the connector is installed in the mounting groove, on the one hand, the connector is accurately positioned in the mounting groove, and on the other hand, the air can be better guided to be discharged along the first groove body (220); and the outline dimension of the first part (100) is larger than the outline dimension of the second part (200), that is, there is a certain gap between the outline of the second part (200) and the mounting groove. With this arrangement, the glue can fully flow into the gap after overflowing along the second hole (210), thereby ensuring a sufficient bonding area.

[0027] Furthermore, a plurality of second groove bodies (230) are provided on the outer peripheral surface of the second part (200), and the second groove bodies (230) extend along the second part (200) to the inner end surface (130) of the first part (100), thereby forming a semi-closed groove, and the first groove body (220) and the second groove body (230) are arranged in parallel; by arranging the second groove body (230), the glue liquid can more evenly and fully fill the gap between the second part (200) and the installation groove, because the glue liquid cannot overflow from the closed end after being filled with the second groove body (230), but overflows along both sides of the second groove body (230), thereby further increasing the bonding area, and when the glue liquid is observed to be about to overflow from the first groove body (220), the glue injection is stopped, and at this time, most of the gap between the second part (200) and the installation groove has been filled.

[0028] Furthermore, the second part (200) is provided with an inwardly contracted step surface (240) at one end away from the first part (100), and the second hole (210) is located on the step surface (240); by providing the step surface (240), after the glue overflows along the second hole (210), it first fills the gap between the step surface (240) and the installation groove, and after the gap is fully filled, the glue flows along the first groove body (220) and the second groove body (230), and then fills the gap between the second part (200) and the remaining part of the installation groove. The entire step surface and the installation groove are fully filled with glue to ensure a larger contact area, thereby making the bonding effect of the connector better.

[0029] Preferably, the first hole (120) extends in the second part (200) but does not pass through the second part (200); the reason for this arrangement is to better guide the glue to flow from the second hole (210) into the gap between the outer periphery of the connector and the mounting groove. If the first hole (120) passes through the second part (200), after the glue enters along the first hole (120), a part of it will overflow through the end of the second part (200). In this way, on the one hand, a part of the glue will enter the core board, which is usually a porous material, thereby causing a large amount of glue to be wasted. On the other hand, the glue also needs more time to fully enter the gap between the outer periphery of the connector and the mounting groove, reducing the installation efficiency.

[0030] Preferably, the first hole (120) includes a flared portion (121) and a main portion (122) in sequence from the outer end surface (110) of the first part (100) inward, and the flared portion (121) has a larger radial dimension than the main portion (122). The setting of the flared portion (121) makes it easier to position and cooperate with the glue gun when manually or machine injecting glue.

[0031] As a further preference, the cross-sectional shape of the main body (122) is a square, which facilitates better setting of the core when manufacturing the connector by mold injection molding, and improves the manufacturing processability.

[0032] Preferably, the second hole (210) is composed of two vertically intersecting through holes. The vertically intersecting through holes are provided to facilitate processing, and the glue can overflow to the outer peripheral surface of the connector more quickly.

[0033] Preferably, the second part (200) is provided with a weight-reducing hole on the end surface away from the first part (100) to save material and further reduce costs.

[0034] Preferably, the connecting piece is integrally injection molded.

[0035] like Figure 8As shown, when the connecting member is installed into the installation groove opened in a composite wall, the outer end surface (110) of the first part (100) thereof is flush with the surface of the composite wall, which makes the installation more beautiful, and the installation components (such as furniture) can be closely attached to the wall after installation, and the force is more reasonable. Example 2

[0036] like Figures 6 and 7 The same points as the first embodiment are not repeated here. The difference is that the cross-section of the connector in this embodiment is circular, and accordingly, the shape of the mounting groove is also circular. Compared with the connector with a runway cross-section, the connector with a circular cross-section is usually smaller in size, simpler to manufacture, and less expensive. However, the load it can withstand is also lower, making it suitable for low-load scenarios. In addition, the cross-section of the connector can also be rectangular or other shapes.

[0037] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connector, suitable for installation in a mounting groove, characterized in that: include: A first part (100), an outer end surface (110) of the first part (100) is provided with a first hole (120), a second part (200) is extended from a side of the first part (100) away from the outer end surface (110), and a plurality of second holes (210) are provided on an outer peripheral surface of the second part (200); The first hole (120) passes through the first portion (100), extends along the first portion (100) toward the second portion (200), and communicates with the second hole (210); The outer peripheral surface of the second part (200) is further provided with a plurality of first groove bodies (220), and the first groove bodies (220) extend along the second part (200) and penetrate the first part (100), thereby forming through grooves.

2. The connector according to claim 1, wherein The first part (100) is tightly matched with the mounting groove, and the outline size of the first part (100) is larger than the outline size of the second part (200).

3. The connector according to claim 2, wherein: The outer peripheral surface of the second part (200) is further provided with a plurality of second groove bodies (230), and the second groove bodies (230) extend along the second part (200) to the inner end surface (130) of the first part (100), thereby forming a semi-closed groove; The first trough body (220) and the second trough body (230) are arranged in parallel.

4. The connector according to claim 2, wherein: The second part (200) is provided with an inwardly contracted step surface (240) at one end away from the first part (100), and the second hole (210) is located on the step surface (240).

5. The connector according to claim 2, wherein: The first hole (120) extends in the second portion (200) but does not pass through the second portion (200).

6. The connector according to claim 2, wherein: The first hole (120) includes a flared portion (121) and a main body portion (122) in sequence from the outer end surface (110) of the first part (100) inward, and the flared portion (121) has a larger radial dimension than the main body portion (122).

7. The connector according to claim 6, wherein: The cross-sectional shape of the main body (121) is a square.

8. The connector according to claim 2, wherein: The second hole (210) consists of two vertically intersecting through holes.

9. The connector according to claim 2, wherein: The second part (200) is provided with a plurality of weight-reducing holes (250) on an end surface away from the first part (100).

10. The connector according to claim 2, wherein: The connecting piece is integrally injection-molded.

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