A tee joint and die

Abstract

The utility model relates to the technical field of joint, concretely is a tee joint and mould. The tee joint includes integrally formed and each other penetrates first communicating pipe, second communicating pipe and third communicating pipe, first communicating pipe and second communicating pipe symmetrical arrangement and are connected with each other, and the third communicating pipe sets up at the lower extreme of first communicating pipe and second communicating pipe junction, and one side of third communicating pipe top end is connected with first communicating pipe, and the other side of third communicating pipe top end is connected with second communicating pipe, to form the tee joint of T type, first communicating pipe and second communicating pipe inside first junction, first communicating pipe and third communicating pipe inside second junction, second communicating pipe and third communicating pipe inside third junction all are equipped with arc convex. Through above -mentioned structure setting, make the corner of tee joint will not produce sharp corner scratch cable line's insulating layer, and the overall sealing performance is better, and the manufacturing cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically a tee connector and mold. Background Technology

[0002] Traditional tee connectors used to fix corrugated pipes cannot be too sharp at corners because power lines, signal lines, and other wires pass through inside. This is to avoid cutting the insulation layer of the wires and causing short circuits or open circuits.

[0003] like Figure 1 As shown, the first-generation T-shaped injection molded parts can only be injected into the mold from three openings, which means that the corners of the T-joints are inevitably sharp right angles. Therefore, after injection molding, the sharp parts inside need to be manually cut off with a scraper, which is time-consuming, labor-intensive, and increases costs. Moreover, due to the unstable cutting, sharp burrs or rough edges may occasionally remain, which can easily damage the internal wires.

[0004] To avoid the above problems, see attached Figure 2 As shown, the second-generation tee connector requires a smooth transition at the junction of three tubular channels. This necessitates a four-way mold assembly design, inserting inner mold cores from the three main pipe directions and adding a detachable cap on the top surface. This allows the mold to extend from the corresponding opening of the cap into the corner during injection molding, ensuring rounded corners. After injection molding, the cap is fixed to the tee connector with sealant, forming a sealed and waterproof tee connector. However, this structure has the following problems: 1. When manually applying sealant to fix the cap, uneven application or deformation under stress can easily cause cracking at the bonding point, leading to leakage and poor sealing. 2. The manufacturing process of the tee connector requires additional steps for gluing and assembly, adding an injection-molded part—the detachable cap on top—resulting in high costs. Utility Model Content

[0005] The purpose of this utility model is to propose a tee connector and mold, which aims to solve the technical problems of poor sealing performance and high cost of existing tee connectors after a period of use.

[0006] To achieve the above objectives, this utility model proposes a three-way connector, comprising an integrally formed first connecting pipe, a second connecting pipe, and a third connecting pipe, wherein the interiors of the first connecting pipe, the second connecting pipe, and the third connecting pipe are all interconnected. The first connecting pipe and the second connecting pipe are symmetrically arranged and connected to each other. The third connecting pipe is arranged at the lower end of the connection between the first connecting pipe and the second connecting pipe. One side of the top of the third connecting pipe is connected to the first connecting pipe, and the other side of the top of the third connecting pipe is connected to the second connecting pipe to form a T-shaped tee connector. The first connection point between the first connecting pipe and the second connecting pipe, the second connection point between the first connecting pipe and the third connecting pipe, and the third connection point between the second connecting pipe and the third connecting pipe are all provided with arc-shaped protrusions.

[0007] Preferably, the first connecting pipe, the second connecting pipe and the third connecting pipe each include a first connecting segment and a second connecting segment arranged in sequence, with the first connecting segment located outside the second connecting segment; The inner diameter of the first connecting segment is greater than the inner diameter of the second connecting segment, such that the wall thickness of the first connecting segment is less than the wall thickness of the second connecting segment.

[0008] Preferably, the first connection, the second connection, and the third connection are interconnected to form a Y-shaped splice in orthographic projection.

[0009] Preferably, the first connection, the second connection, and the third connection are each provided with a plurality of arc-shaped protrusions arranged side by side.

[0010] Preferably, the outer walls of the first, second, and third connecting pipes are all threaded with nuts, and a sealing ring is provided inside the nut. The sealing ring is located on the outside of the first, second, or third connecting pipe.

[0011] Preferably, the outer walls of the first connecting pipe, the second connecting pipe, and the third connecting pipe are further provided with fixing grooves, and the outer walls of the first connecting pipe, the second connecting pipe, and the third connecting pipe are all fitted with anti-loosening washers. One side of the anti-loosening washer is abutted against the nut, and the other side of the anti-loosening washer is provided with a protruding buckle part, which is engaged in the fixing groove.

[0012] In addition, this utility model also proposes a mold for preparing the above-mentioned tee connector.

[0013] Preferably, the mold includes an upper mold, a lower mold, a first mold head, a first movable component, a second mold head, a second movable component, a third mold head, and a third movable component. The upper mold is movably disposed above the lower mold, and the upper mold has a recessed upper mold cavity, and the lower mold has a recessed lower mold cavity, so that when the upper mold and the lower mold are assembled, the upper mold cavity and the lower mold cavity together form an injection cavity that fits the outer contour of the tee connector. The first movable component and the second movable component are respectively disposed on the left and right sides of the lower mold, and the first movable component is detachably connected to the first mold head to drive the first mold head to move horizontally and extend into the injection cavity; the second movable component is detachably connected to the second mold head to drive the second mold head to move horizontally and extend into the injection cavity; the third movable component is disposed on the front or rear side of the lower mold, and the third movable component is detachably connected to the third mold head to drive the third mold head to move horizontally and extend into the injection cavity; During molding, the ends of the first mold head, the second mold head, and the third mold head abut against each other; and the ends of the first mold head, the second mold head, and the third mold head are all provided with concave arc surfaces.

[0014] Preferably, the upper mold has two spaced-apart upper mold cavities, and the lower mold has two spaced-apart lower mold cavities; The lower mold is provided with the third movable component on both the front and rear sides, and the third movable component is connected to the third mold head; the first movable component is connected to two first mold heads, and the second movable component is connected to two second mold heads.

[0015] The tee connector and mold disclosed in this utility model have the following advantages: The connection points of the first, second, and third connecting pipes of the tee connector are all provided with arc-shaped protrusions, preventing sharp edges from scratching the cable insulation layer at the corners of the tee connector. Compared to the original tee connector structure with a cover, this solution uses a one-time injection molding process to obtain the finished product, eliminating the need for secondary processing, simplifying the manufacturing process, and eliminating the need for subsequent manual application of sealant to the cover. This results in better overall sealing performance and lower manufacturing costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the first-generation tee connector; Figure 2 This is a schematic diagram of the second-generation tee connector; Figure 3 This is a cross-sectional structural diagram of the tee connector of this utility model; Figure 4 for Figure 3A magnified view of a portion of point A in the middle; Figure 5 This is an exploded view of the tee connector of this utility model; Figure 6 This is a structural schematic diagram of the tee connector of this utility model from another angle; Figure 7 A schematic diagram of the mold used to prepare the tee connector according to this utility model; Figure 8 A partial structural schematic diagram of the mold for preparing the tee connector according to this utility model; Figure 9 This is a schematic diagram of the upper mold in the mold for preparing the tee connector according to this utility model. Figure 10 This is a schematic diagram of the lower mold in the mold for preparing the tee connector according to this utility model. Figure 11 This is a schematic diagram of the structure of the first mold head in the mold for preparing the tee connector according to this utility model.

[0018] In the attached diagram: 1-First connecting pipe, 11-First connection point, 12-Second connection point, 13-First connecting segment, 14-Second connecting segment, 15-Fixing slot, 2-Second connecting pipe, 21-Third connection point, 3-Third connecting pipe, 4-Arc-shaped protrusion, 5-Nut, 6-Sealing ring, 7-Anti-loosening washer, 71-Snap-fit ​​part, 8-Mold, 81-Upper mold, 811-Upper mold cavity, 82-Lower mold, 821-Lower mold cavity, 83-First mold head, 831-Arc surface, 84-First movable component, 85-Second mold head, 86-Second movable component, 87-Third mold head, 88-Third movable component.

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] like Figures 3 to 6 As shown, a three-way connector includes an integrally formed first connecting pipe 1, second connecting pipe 2 and third connecting pipe 3, the interiors of the first connecting pipe 1, the second connecting pipe 2 and the third connecting pipe 3 are all interconnected; The first connecting pipe 1 and the second connecting pipe 2 are symmetrically arranged and connected to each other. The third connecting pipe 3 is arranged at the lower end of the connection between the first connecting pipe 1 and the second connecting pipe 2. One side of the top end of the third connecting pipe 3 is connected to the first connecting pipe 1, and the other side of the top end of the third connecting pipe 3 is connected to the second connecting pipe 2 to form a T-shaped tee connector. The first connection 11 between the first connecting pipe 1 and the second connecting pipe 2, the second connection 12 between the first connecting pipe 1 and the third connecting pipe 3, and the third connection 21 between the second connecting pipe 2 and the third connecting pipe 3 are all provided with arc-shaped protrusions 4.

[0024] In this design, arc-shaped protrusions 4 are provided at the connection points of the first connecting pipe 1, the second connecting pipe 2, and the third connecting pipe 3 of the tee connector, preventing sharp edges from scratching the cable insulation layer at the corners of the tee connector. Compared to the original tee connector structure with a cover, this design achieves a finished product through one-time injection molding, eliminating the need for secondary processing, simplifying the manufacturing process, and eliminating the need for subsequent manual application of sealant to the cover. This results in better overall sealing performance and lower manufacturing costs.

[0025] Furthermore, the first connecting pipe 1, the second connecting pipe 2 and the third connecting pipe 3 each include a first connecting segment 13 and a second connecting segment 14 arranged sequentially, with the first connecting segment 13 located outside the second connecting segment 14; The inner diameter of the first connecting segment 13 is greater than the inner diameter of the second connecting segment 14, such that the wall thickness of the first connecting segment 13 is less than the wall thickness of the second connecting segment 14.

[0026] In this embodiment, as Figures 3 to 4As shown, the second connecting section 14 is close to the various connection points inside the tee connector. The inner diameter of the second connecting section 14 is smaller than the inner diameter of the outer first connecting section 13. That is, the pipe wall of the tee connector is thicker at the second connecting section 14. Combined with the arc-shaped protrusion 4 at the connection point, it is more convenient to demold the various mold heads in the future.

[0027] Furthermore, the first connection 11, the second connection 12, and the third connection 21 are interconnected to form a Y-shaped splice in orthographic projection. This ensures that both corners inside the tee connector have arc-shaped protrusions 4 to prevent scratching the cable; in addition, each connection point on the inner wall of the tee connector also has arc-shaped protrusions 4, which better secure the internal cable without damaging it.

[0028] In actual production, the radius of the arc-shaped protrusion 4 can be R0.6, which is less likely to scratch the internal cables. If it is less than 0.6, the mold core strength is insufficient. For nylon material, if it is greater than 0.6, the mold undercut is too large, making demolding difficult and easily damaging the product.

[0029] Furthermore, the first connection 11, the second connection 12, and the third connection 21 are each provided with multiple arc-shaped protrusions 4 arranged side by side. In actual design and production, each connection does not necessarily have only one arc-shaped protrusion 4, but can be provided with two arc-shaped protrusions 4 arranged side by side and connected together, as long as the seam between the two arc-shaped protrusions 4 does not come into contact with the wire. This arrangement can reduce the difficulty of processing and design.

[0030] Furthermore, the outer walls of the first connecting pipe 1, the second connecting pipe 2, and the third connecting pipe 3 are all threaded with nuts 5, and a sealing ring 6 is provided inside the nut 5. The sealing ring 6 is located on the outside of the first connecting pipe 1, the second connecting pipe 2, or the third connecting pipe 3.

[0031] In this embodiment, as Figures 3 to 6 As shown, each connecting pipe of the tee fitting has an external thread at its head. The nut 5 is threaded onto the outer wall of each connecting pipe. When the nut 5 is tightened through the thread, radial pressure is applied evenly, causing the elastic sealing ring 6 (such as EPDM or silicone) to fully deform and fill the gap between the outer side of the tee pipe and the corrugated pipe, achieving better waterproof and dustproof effects. Compared with the traditional adhesive fixing method, the above-mentioned threaded connection method allows for non-destructive disassembly and assembly, facilitating the replacement of cables or the inspection of the sealing ring 6 in the future, reducing maintenance costs by 60%.

[0032] Furthermore, the outer walls of the first connecting pipe 1, the second connecting pipe 2, and the third connecting pipe 3 are also provided with fixing grooves 15. The outer walls of the first connecting pipe 1, the second connecting pipe 2, and the third connecting pipe 3 are all fitted with anti-loosening washers 7. One side of the anti-loosening washer 7 is abutted against the nut 5, and the other side of the anti-loosening washer 7 is provided with a protruding buckle part 71, which is engaged in the fixing groove 15.

[0033] In this embodiment, the outer walls of the first connecting pipe 1, the second connecting pipe 2, and the third connecting pipe 3 are also provided with anti-loosening washers 7. The anti-loosening washers 7 are located inside the nut 5 and are fixed to the fixing grooves 15 of the first connecting pipe 1, the second connecting pipe 2, and the third connecting pipe 3 by the snap-fit ​​part 71. The anti-loosening washers 7 locked with the nut 5 can effectively resist loosening caused by external force and avoid sealing failure.

[0034] Specifically, this utility model also proposes a mold for forming the above-mentioned tee connector. The mold 8 includes an upper mold 81, a lower mold 82, a first mold head 83, a first movable component 84, a second mold head 85, a second movable component 86, a third mold head 87, and a third movable component 88. The upper mold 81 is movably disposed above the lower mold 82, and the upper mold 81 has a recessed upper mold cavity 811. The lower mold 82 has a recessed lower mold cavity 821, so that when the upper mold 81 and the lower mold 82 are assembled, the upper mold cavity 811 and the lower mold cavity 821 together form an injection cavity that fits the outer contour of the tee connector. The first movable component 84 and the second movable component 86 are respectively disposed on the left and right sides of the lower mold 82, and the first movable component 84 is detachably connected to the first mold head 83 to drive the first mold head 83 to move horizontally and extend into the injection cavity; the second movable component 86 is detachably connected to the second mold head 85 to drive the second mold head 85 to move horizontally and extend into the injection cavity; the third movable component 88 is disposed on the front or rear side of the lower mold 82, and the third movable component 88 is detachably connected to the third mold head 87 to drive the third mold head 87 to move horizontally and extend into the injection cavity; During molding, the ends of the first mold head 83, the second mold head 85 and the third mold head 87 abut against each other; and the ends of the first mold head 83, the second mold head 85 and the third mold head 87 are all provided with concave arc surfaces 831.

[0035] In this embodiment, as Figures 7 to 11As shown, through the aforementioned special mold 8 structure design, the ends of the first mold head 83, the second mold head 85, and the third mold head 87 are all provided with concave arc surfaces 831. During production, the ends of the three mold heads abut against each other to form arc-shaped protrusions 4 at the corners / turns of the T-joint after injection molding. The shape of the mold 8 corresponds to that of the T-joint. Furthermore, the ends of the mold heads with the aforementioned special structure and the injection-molded plastic parts (i.e., the T-joint) will form an interlocking structure during production. The arc-shaped protrusions 4 / concave arc surfaces 831 are actually relatively small in size. In addition, the plastic parts themselves have a certain degree of elasticity. Therefore, after injection molding, by first opening the various external moving components and then directly pulling the three mold heads outward, separation from the T-joint can be achieved. The elasticity of the plastic parts themselves allows for such pull-out.

[0036] The three moving components in this solution have the same structure, all including conventional push rods and transverse fixing seats. The push rods drive each transverse fixing seat to move horizontally when the mold is closed, which in turn drives the mold head fixed to the transverse fixing seat to move horizontally. This is commonly found in existing T-shaped molds. Furthermore, the upper mold 81 is provided with two spaced-apart upper mold cavities 811, and the lower mold 82 is provided with two spaced-apart lower mold cavities 821; The lower mold 82 is provided with the third movable component 88 on both the front and rear sides, and the third movable component 88 is connected to the third mold head 87; the first movable component 84 is connected to two first mold heads 83, and the second movable component 86 is connected to two second mold heads 85.

[0037] In this embodiment, in order to prepare two T-joints at the same time, two sets of third movable components 88 and third molds 87 are set up. The first movable component 84 is also connected to two first molds 83, and the second movable component 86 is also connected to two second molds 85. Through the joint cooperation of the two sets of first molds 83, second molds 85 and third molds 87, two T-joints can be prepared at the same time in one mold closing, which improves production efficiency.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A tee joint, characterized in that It includes an integrally formed first connecting pipe (1), second connecting pipe (2) and third connecting pipe (3), and the interiors of the first connecting pipe (1), the second connecting pipe (2) and the third connecting pipe (3) are interconnected; The first connecting pipe (1) and the second connecting pipe (2) are symmetrically arranged and connected to each other. The third connecting pipe (3) is arranged at the lower end of the connection between the first connecting pipe (1) and the second connecting pipe (2). One side of the top of the third connecting pipe (3) is connected to the first connecting pipe (1), and the other side of the top of the third connecting pipe (3) is connected to the second connecting pipe (2) to form a T-shaped tee connector. The first connection point (11) between the first connecting pipe (1) and the second connecting pipe (2), the second connection point (12) between the first connecting pipe (1) and the third connecting pipe (3), and the third connection point (21) between the second connecting pipe (2) and the third connecting pipe (3) are all provided with arc-shaped protrusions (4).

2. A tee joint according to claim 1, characterised in that The first connecting pipe (1), the second connecting pipe (2) and the third connecting pipe (3) each include a first connecting segment (13) and a second connecting segment (14) arranged in sequence, with the first connecting segment (13) located outside the second connecting segment (14); The inner diameter of the first connecting segment (13) is greater than the inner diameter of the second connecting segment (14), so that the wall thickness of the first connecting segment (13) is less than the wall thickness of the second connecting segment (14).

3. A tee joint according to claim 1, wherein The first connection (11), the second connection (12) and the third connection (21) are connected to each other to form a Y-shaped splice in orthographic projection.

4. The tee joint of claim 1, wherein The first connection (11), the second connection (12), and the third connection (21) are each provided with a plurality of arc-shaped protrusions (4) arranged side by side.

5. A tee connector according to claim 1, characterized in that, The outer walls of the first connecting pipe (1), the second connecting pipe (2) and the third connecting pipe (3) are all threaded with nuts (5), and a sealing ring (6) is provided inside the nut (5). The sealing ring (6) is located on the outside of the first connecting pipe (1), the second connecting pipe (2) or the third connecting pipe (3).

6. A tee joint according to claim 5, characterised in that The outer walls of the first connecting pipe (1), the second connecting pipe (2) and the third connecting pipe (3) are also provided with fixing grooves (15). The outer walls of the first connecting pipe (1), the second connecting pipe (2) and the third connecting pipe (3) are all fitted with anti-loosening washers (7). One side of the anti-loosening washer (7) is pressed against the nut (5), and the other side of the anti-loosening washer (7) is provided with a protruding buckle (71). The buckle (71) is engaged in the fixing groove (15).

7. A mold characterized in that, For molding a tee connector as described in any one of claims 1-6, the mold (8) includes an upper mold (81), a lower mold (82), a first mold head (83), a first movable component (84), a second mold head (85), a second movable component (86), a third mold head (87), and a third movable component (88). The upper mold (81) is movably disposed above the lower mold (82), and the upper mold (81) is provided with a recessed upper mold cavity (811). The lower mold (82) is provided with a recessed lower mold cavity (821), so that when the upper mold (81) and the lower mold (82) are assembled, the upper mold cavity (811) and the lower mold cavity (821) together form an injection cavity that fits the outer contour of the tee connector. The first movable component (84) and the second movable component (86) are respectively disposed on the left and right sides of the lower mold (82), and the first movable component (84) is detachably connected to the first mold head (83) to drive the first mold head (83) to move horizontally and extend into the injection cavity; the second movable component (86) is detachably connected to the second mold head (85) to drive the second mold head (85) to move horizontally and extend into the injection cavity; the third movable component (88) is disposed on the front or rear side of the lower mold (82), and the third movable component (88) is detachably connected to the third mold head (87) to drive the third mold head (87) to move horizontally and extend into the injection cavity; During molding, the ends of the first mold (83), the second mold (85) and the third mold (87) abut against each other; and the ends of the first mold (83), the second mold (85) and the third mold (87) are all provided with concave arc surfaces (831).

8. A mold according to claim 7, characterized in that, The upper mold (81) is provided with two spaced upper mold cavities (811), and the lower mold (82) is provided with two spaced lower mold cavities (821). The lower mold (82) is provided with the third movable component (88) on both the front and rear sides, and the third movable component (88) is connected to the third mold head (87); the first movable component (84) is connected to two first mold heads (83), and the second movable component (86) is connected to two second mold heads (85).

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