Press-fit mounting structure of shaft head and pipe end

Abstract

The utility model discloses a kind of press-fit mounting structure of shaft head and pipe fitting end, including shaft head and pipe fitting, shaft head is installed in pipe fitting end;Diameter flange is set in the end of shaft head base body, the end surface of pipe fitting is formed limit, and elastic cantilever with barb protrusion is set on the shaft head base body, after shaft head is pressed into pipe fitting, barb protrusion is clamped into the clamping hole of pipe fitting, to realize the stable connection of shaft head and pipe fitting quickly, not only easy to install, shaft head can be effectively prevented from loosening. At the same time, open mouth positioning hole (slit) is set in the coaxial position of pipe fitting end corresponding clamping hole, and corresponding positioning protrusion is set on the shaft head base body, it is helpful to quickly align angle when operating, and effectively prevent relative rotation of shaft head and pipe fitting.

Description

Technical Field

[0001] This utility model belongs to the technical field of connection structure between mechanical parts, specifically relating to a press-fit installation structure for a shaft head and the end of a pipe fitting. Background Technology

[0002] Currently, the shaft ends of stainless steel pipe fittings are press-fitted using a tight fit process, without any measures to prevent loosening. This invention features a press-fit installation structure between the shaft end and the pipe fitting end, which facilitates installation and effectively prevents loosening. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a press-fit installation structure for shaft heads and pipe fitting ends. This installation structure is simple, easy to install, and effectively prevents loosening.

[0004] This utility model is achieved through the following technical solution:

[0005] A press-fit installation structure for a shaft head and a pipe fitting includes a shaft head and a pipe fitting, with the shaft head installed at the end of the pipe fitting. The shaft head includes a shaft head base, with an expanded diameter flange at the outer end of the shaft head base for contacting the end face of the pipe fitting. An elastic cantilever is provided on the shaft head base, with a barbed protrusion on its outer wall. A locking hole corresponding to the barbed protrusion is provided on the pipe fitting. After the shaft head is pressed into the pipe fitting, the barbed protrusion engages with the locking hole. A positioning protrusion is also provided on the shaft head base, connected to the inner side of the expanded diameter flange. An open positioning hole corresponding to the positioning protrusion is provided at the end of the pipe fitting, with the positioning protrusion inserted into the open positioning hole.

[0006] In the above technical solution, the pipe fitting is a stainless steel pipe, and the shaft head is installed at both ends of the pipe fitting.

[0007] In the above technical solution, the outer diameter of the expansion flange is equal to the outer diameter of the pipe fitting.

[0008] In the above technical solution, the positioning protrusion and the barb protrusion are in the same axial direction, and the locking hole and the open positioning hole are in the same axial direction.

[0009] In the above technical solution, multiple ribs are arranged circumferentially on the outer wall of the shaft head base, and the outer diameter of the ribs is consistent with the inner diameter of the pipe fitting.

[0010] In the above technical solution, a shaft hole is provided at the axial center of the shaft head base for mounting the rotating shaft.

[0011] In the above technical solution, there are multiple elastic cantilever arms, preferably three, which are arranged at equal intervals along the circumference of the shaft head base; each elastic cantilever arm has a barb protrusion, and each barb protrusion corresponds to a positioning protrusion.

[0012] In the above technical solution, the open positioning hole is a rectangular hole, and the positioning protrusion is a rectangular protrusion.

[0013] In the above technical solution, the card hole is a rectangular hole.

[0014] The advantages and beneficial effects of this utility model are as follows:

[0015] This utility model innovatively adopts a press-fit installation structure. An expanded-diameter flange is provided at the end of the shaft head base to limit the end face of the pipe fitting. An elastic cantilever with barbed protrusions is provided on the shaft head base. After the shaft head is pressed into the pipe fitting, the barbed protrusions engage with the fitting's locking holes, thus quickly achieving a stable connection between the shaft head and the pipe fitting. This not only facilitates installation but also effectively prevents the shaft head from loosening. Simultaneously, an open positioning hole (notch) is provided at the coaxial position corresponding to the locking hole at the end of the pipe fitting, and a corresponding positioning protrusion is provided on the shaft head base. This helps to quickly align the angle during operation and effectively prevents relative rotation between the shaft head and the pipe fitting. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembly state of the press-fit installation structure between the shaft head and the end of the pipe fitting.

[0017] Figure 2 This is a sectional view of the press-fit installation structure of the shaft head and the end of the pipe fitting.

[0018] Figure 3 This is a schematic diagram of the press-fit installation structure between the shaft head and the end of the pipe fitting.

[0019] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0021] This embodiment provides a press-fit installation structure for a shaft head and a pipe fitting end. Referring to the attached drawings, it includes a shaft head 1 and a pipe fitting 2. The pipe fitting is typically a stainless steel pipe, and the shaft head is installed at both ends of the pipe fitting. This invention innovatively adopts a press-fit installation structure to achieve the connection between the shaft head and the pipe fitting. This not only facilitates installation but also ensures a stable connection, effectively preventing the shaft head from loosening. The press-fit installation structure for the shaft head and pipe fitting is described in detail below.

[0022] The shaft head 1 includes a shaft head base, which is cylindrical. An expanding flange 1.1 is provided at the outer end of the shaft head base. The outer diameter of the expanding flange 1.1 is equal to the outer diameter of the pipe fitting 2. The expanding flange 1.1 abuts against the end face of the pipe fitting 2, thus limiting its movement. An elastic cantilever 1.2 is provided on the shaft head base (i.e., one end of the elastic cantilever 1.2 is connected to the shaft head base, with a gap between the elastic cantilever 1.2 and the outer wall of the shaft head base, and the other end of the elastic cantilever 1.2 is suspended, thereby giving the elastic cantilever 1.2... The elastic cantilever 1.2 has a barbed protrusion 1.3 on its outer wall. Correspondingly, the pipe fitting 2 has a locking hole 2.1 corresponding to the barbed protrusion 1.3. When the shaft head 1 is pressed into the pipe fitting 2, the barbed protrusion 1.3 engages with the locking hole 2.1, forming a limit and preventing the shaft head 1 from loosening (i.e., under the action of the barbed protrusion 1.3, the shaft head 1 is prevented from detaching from the pipe fitting 1). In addition, a positioning protrusion 1.4 is also provided on the shaft head base. The positioning protrusion 1.4 and the inner surface of the expanded diameter flange 1.1 (the inner surface of the expanded diameter flange 1.1 refers to the expansion) are connected. The flange 1.1 (facing the pipe fitting) is connected. Correspondingly, an open positioning hole 2.2 (i.e., a notch) corresponding to the positioning protrusion 1.4 is provided on the end of the pipe fitting 2. When the shaft head 1 is pressed into the pipe fitting 2, the positioning protrusion 1.4 is inserted into the open positioning hole 2.2 (the open hole is for the positioning protrusion 1.4 to be inserted into the positioning hole), thereby forming a limit and effectively stabilizing the connection between the pipe fitting 2 and the shaft head 1, especially preventing relative rotation between the pipe fitting 2 and the shaft head 1; furthermore, the positioning protrusion 1.4 is located outside the barb protrusion 1.3, and The positioning protrusion 1.4 and the barb protrusion 1.3 are in the same axial direction. Similarly, the retaining hole 2.1 and the open positioning hole 2.2 are also in the same axial direction. This arrangement allows the worker to quickly and accurately align the barb protrusion 1.3 with the open positioning hole 2.2 during assembly, thereby achieving the goal of aligning the barb protrusion 1.3 with the retaining hole 2.1 (since the retaining hole 2.1 and the open positioning hole 2.2 are in the same axial direction, aligning the barb protrusion 1.3 with the open positioning hole 2.2 means that the barb protrusion 1.3 is aligned with the retaining hole 2.1). Furthermore, a shaft hole 1.5 is provided at the axial center of the shaft head base for mounting the rotating shaft 1.6. More specifically, multiple circumferentially spaced ribs 1.7 are provided on the outer wall of the shaft head base, with the outer diameter of the ribs 1.7 matching the inner diameter of the pipe fitting 2.

[0023] Furthermore, there are multiple elastic cantilever arms 1.2, preferably 3-4, which are arranged at equal intervals along the circumference of the shaft head base; each elastic cantilever arm 1.2 has a barb protrusion 1.3, and each barb protrusion 1.3 corresponds to a positioning protrusion 1.4.

[0024] Furthermore, the open positioning hole 2.2 is a rectangular hole, and the positioning protrusion 1.4 is a rectangular protrusion.

[0025] To elaborate further, the card hole 2.1 is a rectangular hole.

[0026] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0028] The present invention has been described above by way of example. It should be noted that, without departing from the core of the present invention, any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort fall within the protection scope of the present invention.

Claims

1. A press-fit installation structure for a shaft head and a pipe fitting end, characterized in that: The device includes a shaft head and a pipe fitting, with the shaft head installed at the end of the pipe fitting. The shaft head includes a shaft head base, with an expanded diameter flange at the outer end of the shaft head base for contacting the end face of the pipe fitting. An elastic cantilever is provided on the shaft head base, with a barbed protrusion on its outer wall. A corresponding locking hole is provided on the pipe fitting, and the barbed protrusion engages with the locking hole after the shaft head is pressed into the pipe fitting. A positioning protrusion is also provided on the shaft head base, connected to the inner side of the expanded diameter flange. An open positioning hole corresponding to the positioning protrusion is provided on the end of the pipe fitting, and the positioning protrusion is inserted into the open positioning hole.

2. The press-fit installation structure for the shaft head and pipe end according to claim 1, characterized in that: The fitting is made of stainless steel, and the shaft ends are installed at both ends of the fitting.

3. The press-fit installation structure for the shaft head and pipe end according to claim 1, characterized in that: The outer diameter of the expansion flange is equal to the outer diameter of the pipe fitting.

4. The press-fit installation structure for the shaft head and pipe end according to claim 1, characterized in that: The positioning protrusion and the barb protrusion are in the same axial direction, and the locking hole and the open positioning hole are in the same axial direction.

5. The press-fit installation structure for the shaft head and pipe end according to claim 1, characterized in that: Multiple ribs are arranged circumferentially on the outer wall of the shaft head base, and the outer diameter of the ribs is the same as the inner diameter of the pipe fitting.

6. The press-fit installation structure for the shaft head and pipe end according to claim 1, characterized in that: A shaft hole is provided at the center of the shaft head base for mounting the rotating shaft.

7. The press-fit installation structure for the shaft head and pipe end according to claim 1, characterized in that: There are multiple elastic cantilever arms, which are arranged at equal intervals along the circumference of the shaft head base; each elastic cantilever arm has a barb protrusion, and each barb protrusion corresponds to a positioning protrusion.

8. The press-fit installation structure for the shaft head and pipe end according to claim 1, characterized in that: The open positioning hole is a rectangular hole, and the positioning protrusion is a rectangular protrusion.

9. The press-fit installation structure for the shaft head and pipe end according to claim 1, characterized in that: The card slot is rectangular.

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