WO2023273126A1

WO2023273126A1 - Automatically connecting safety tube joint

Info

Publication number: WO2023273126A1
Application number: PCT/CN2021/133227
Authority: WO
Inventors: 曹树林; 徐�明; 李旭阳; 申太明; 万雄伟; 杨毅; 徐梓净; 韩宗俊
Original assignee: 重庆溯联塑胶股份有限公司
Priority date: 2021-07-02
Filing date: 2021-11-25
Publication date: 2023-01-05
Also published as: CN113404958A

Abstract

An automatically connecting safety pipe joint, comprising a connecting sleeve (1) into which a male plug is inserted. The connecting sleeve (1) is internally provided with a locking device. The locking device comprises a push plate (3), wherein the upper end of the push plate (3) is provided with a first clamping bar (31) and a second clamping bar (32); a first limiting block (41) and a second limiting block (42) are arranged between the two clamping bars; and the lower end of the push plate (3) is provided with a first positioning rod (51) and a second positioning rod (52). According to the safety tube joint, the locking device is inserted into the connecting sleeve, such that not only is the fixation of the male plug protected, but the male plug can also be automatically locked; in addition, the observation of a mounting state is also facilitated, and the occurrence of detachment during mounting is avoided. The safety pipe joint has a simple structure, and is convenient and fast to mount and remove.

Description

Self-connecting safety fittings

technical field

The invention relates to the field of auto parts manufacturing, in particular to an automatically connected safety pipe joint.

Background technique

At present, the quick connection devices widely used in automotive fuel and new energy pipeline systems mainly use a single locking mechanism.

technical problem

Usually, the connection device with single locking mechanism is unlocked by external force (vibration, flying stones, etc.) The function of prevention and error prevention is very easy to cause the problem of improper installation and affect driving safety.

technical solution

The technical problem to be solved by the present invention is to provide an automatically connected safety pipe joint that is convenient for disassembly and assembly and inspection of the installation state.

Technical scheme of the present invention is as follows:

A safety pipe joint for automatic connection, comprising a connecting sleeve (1) inserted with a male plug, a locker is arranged inside the connecting sleeve (1), and the connecting sleeve (1) is arranged from top to bottom A first cavity (11) and a second cavity (12) are provided in sequence, an insertion hole (21) is provided on one side of the first cavity (11), and the left and right sides are symmetrical on the other side There are two limiting holes (23), a notch groove is provided at the bottom of the first cavity (11), a mounting hole (121) is provided on one side of the second cavity (12), and a mounting hole (121) is provided on the other side There is a relief hole (122) on the side, a guide block (22) is provided at the position corresponding to the installation hole (121) in the second cavity (12), and a positioning protrusion is provided on the side corresponding to the relief hole (122) block (13); the locking device includes a push plate (3), and the upper end of the push plate (3) is provided with a horizontally protruding first clip (31) and a second clip (32). Two stoppers (33) are arranged symmetrically on the two clips, and the two stoppers (33) extend into the limit holes (23) at the corresponding ends, and a second block is arranged between the two clips. A limit block (41) and a second limit block (42), the lower end of the push plate (3) is provided with a first positioning rod (51) and a second positioning rod (52), the two clamping bars are Stretch into the first cavity (11), the stopper (33) can prevent the locker from falling off, the two positioning rods and the limit block both extend into the second cavity (12), and insert them into the male plug , the corresponding position on the limit block fits with the outer wall of the male plug, and the corresponding position on the two positioning rods engages and positions with the positioning protrusion (13) at the corresponding end.

With the above structure, when the locker is inserted into the connecting sleeve, the first positioning rod and the second positioning rod are inserted from the position of the mounting hole, and then the first and second limiting blocks are also inserted into the second cavity from the position of the mounting hole , the first clamping strip and the second clamping strip are inserted into the first cavity from the insertion hole, and the stopper on the clamping strip extends into the limit hole at the corresponding end to prevent the lock from falling off; after inserting the male plug, the male plug will The boss moves from top to bottom and squeezes the corresponding positions on the two positioning rods. The two positioning rods open accordingly. After the male plug is inserted in place, the two positioning rods move back along the outside Move sideways, and make the corresponding position on the limit block fit with the corresponding position on the outer wall of the male plug and the corresponding position of the boss, and the corresponding positions on the two positioning rods are snapped and positioned with the positioning protrusions at the corresponding ends to realize automatic locking prevent and prevent mistakes; if the male plug is not installed in place, in one case, when the two positioning rods are in the open state compared with the initial position in the two limit holes, the locker is loose, and the other The situation is that the boss of the male plug has passed the position of the positioning rod, but the positioning rod is not locked in place. From the outside of the connecting sleeve, it can be seen that the two positioning rods are opened outwards, that is, the male plug is loose. The position of the limit hole is convenient for checking the installation status; when dismantling, open the two positioning rods directly from the position of the dismantling hole, so that the positioning rods leave the positioning protrusions, pull the boss position of the male plug out of the position of the positioning rods, and finally loosen Two positioning rods, simple and compact structure, the whole disassembly process is simple and fast.

In order to improve the stress strength, as a preference, a first fixed block (441) and a second fixed block (442) are symmetrically arranged on the push plate (3) on the position between the two clamping strips on the left and right ), a horizontally extending first limiting block (41) is provided at the lower end of the first fixing block (441), and a horizontally extending second limiting block is provided at the lower end of the second fixing block (442). The position block (42), the end faces of the extending ends of the two limit blocks are provided with a section of arc surface, and the two sections of the arc surface form a semi-arc shape; in the first limit block (41) and the lower end surface of the second limiting block (42) are provided with a section of extending section (55) protruding downward, and on each of the extending sections (55), there is a section corresponding to the extending direction of the limiting block arc surface section; reinforcing blocks (45) are provided between the fixed block and the limit block at the corresponding end.

In order to improve the installation stability, preferably, the upper end surfaces of the two limiting blocks and the upper end surfaces of the two positioning rods are flush with each other.

In order to better ensure the convenience of disassembly and assembly, as a preference, the fixed block, the limit block and the extension section at the corresponding end are provided with upper and lower through grooves, and the grooves at both ends are symmetrically arranged and surrounded to form a gap structure; A relief groove (14) is provided at the position corresponding to the notch structure at the bottom of the first cavity (11) and the second cavity (12), and the two relief grooves (14) are compatible with Gap structural connectivity.

In order to simplify the structure, as a preference, both the first positioning rod (51) and the second positioning rod (52) extend horizontally from the lower end of the push plate (3), and each extending end of the positioning rod is provided with Bending section (53), each positioning rod is provided with a bump (54), and the upper end surface of each bump (54) is provided with a section of transition slope (541), and the bending section at the corresponding end (53), the protrusion (54) and the corresponding position of the positioning rod are surrounded to form a card slot; a connecting block is arranged in the second cavity (12), and two left and right symmetrically arranged on the connecting block a positioning protrusion (13), and the slot at the corresponding end is engaged with the positioning protrusion (13) for positioning.

In order to automatically slide and lock in place, preferably, the outer wall of each of the protrusions (54) includes a first straight section (541), connected at the highest end of the first straight section (541) There is a second straight section (542), and a circular arc section (543) is connected to the lowest end of the second straight section (542). The corresponding position of the wall is connected.

Beneficial effect

The invention inserts a locking device on the connecting sleeve, which not only protects the fixing of the male plug, but also realizes automatic locking of the male plug, and at the same time facilitates observation of the installation state and avoids the occurrence of installation falling off. Simple, easy to assemble and disassemble.

Description of drawings

Figure 1 is an exploded view of the installation of the present invention.

Fig. 2 is a schematic structural diagram of the first cavity.

Fig. 3 is a schematic structural diagram of the second cavity.

Fig. 4 is a schematic structural diagram of the locker.

Fig. 5 is a bottom view of Fig. 4 .

FIG. 6 is a top view of FIG. 4 .

Fig. 7 is a sectional view taken along line A-A in Fig. 6 .

Fig. 8 is a schematic diagram of the installation process of the present invention.

Fig. 9 is a schematic diagram of the installation structure of the present invention.

FIG. 10 is a bottom view of FIG. 9 .

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be further described below in conjunction with accompanying drawing.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Fig. 10, the present invention includes a connecting sleeve (1) inserted with a male plug. A locking device is provided inside the connection sleeve (1), and a first cavity (11) and a second cavity (12) are sequentially provided in the connection sleeve (1) from top to bottom. One side of the cavity (11) is provided with an insertion hole (21), and the left and right sides of the middle part of the first cavity (11) are symmetrically provided with two limiting holes (23). (11) The bottom of the cavity is provided with a notch groove,

One side of the second cavity (12) is provided with an installation hole (121), and the other side is provided with a relief hole (122). The position corresponding to the installation hole (121) in the second cavity (12) A guide block (22) is provided, and a positioning bump (13) is provided on one side corresponding to the relief hole (122);

The locking device includes a push plate (3), on the upper end of the push plate (3) there are horizontally protruding first clamping strips (31) and second clamping strips (32). Two stoppers (33) are arranged symmetrically on the bar, and the two stoppers (33) extend into the limit holes (23) at the corresponding ends to prevent the locker from falling off.

A first fixed block (441) and a second fixed block (442) are symmetrically arranged on the push plate (3) corresponding to the position between the two clamping strips on the left and right, and the first fixed block The lower end of (441) is provided with a horizontally protruding first limit block (41), and the lower end of the second fixed block (442) is provided with a horizontally protruding second limit block (42). The end faces of the protruding ends of the limit blocks are provided with a section of arc surface, and the two sections of arc surfaces form a semi-arc shape; in the first limit block (41) and the second limit block (42) The lower end surface of each is provided with a section of extended section (55) protruding downward, and on each of the extended sections (55), an arc section is provided corresponding to the extending direction of the limit block; the fixed section at the corresponding end A reinforcing block (45) is arranged between the block and the limiting block.

The upper end surfaces of the two limiting blocks are flush with the upper end surfaces of the two positioning rods.

The fixed block, the limit block and the extension section at the corresponding end are provided with upper and lower through grooves, and the grooves at both ends are symmetrically arranged and surrounded to form a gap structure; in the first cavity (11) and the second cavity A relief groove (14) is provided at the bottom of the chamber (12) corresponding to the notch structure, and the two relief grooves (14) communicate with the notch structure.

The lower end of the push plate (3) is provided with a first positioning rod (51) and a second positioning rod (52) protruding horizontally, each extending end of the positioning rod is provided with a bending section (53), Each positioning rod is provided with a protrusion, and the upper end surface of each protrusion is provided with a section of transition slope (541), and the corresponding position of the bending section (53) at the corresponding end, the protrusion and the positioning rod is enclosed A card slot is formed; a connection block is provided in the second cavity (12), and two positioning protrusions (13) are arranged symmetrically on the left and right on the connection block, and the card slot at the corresponding end and the positioning protrusion (13) Clamping and positioning.

The outer wall of each of the protrusions includes a first straight section (542), and a second straight section (543) is connected to the highest end of the first straight section (542). The lowest end of the straight section (543) is connected with an arc section (544), and the lowest end of the arc section (544) is connected to the corresponding position on the inner wall of the positioning rod at the corresponding end.

The using method of the present invention is as follows:

As shown in Figures 1 to 10, when the locker is inserted into the connection sleeve 1, the first positioning rod 51 and the second positioning rod 52 are inserted from the installation hole 121, and then the first stopper 41 and the second stopper 42 It is also inserted in the second cavity 12 from the position of the mounting hole 121, and the first clamping strip 31 and the second clamping strip 32 are inserted into the first cavity 11 from the position of the insertion hole 21, and the stoppers 33 on the two clamping strips extend respectively. Insert into the limit hole 23 of the corresponding end, the stopper 33 abuts against the wall of the limit hole 23 to prevent the locker from falling off.

After the male plug is inserted, the boss on the male plug moves from top to bottom and simultaneously squeezes the transition slope 541 on the two bumps, the first positioning rod 51 and the second positioning rod 52 move along the trend and form an open shape, and the male plug After the lower insertion is in place, that is, the position of the boss of the male plug moves down to leave the position of the transition slope 541, and when the two positioning rods move back, the second oblique straight section 543 of the outer side wall of the protrusion is attached to the outer side wall of the male plug, and Move along the outer surface of the male plug, and make the slot on the corresponding end of the positioning rod engage with the positioning protrusion (13) and fix it. The arc segment 544 fits the outer wall of the male plug. At the same time, the first limit block ( 41) and the second limit block 42 move to the top of the boss, and the arc surface of the extending end of the two limit blocks fits with the corresponding position of the outer wall of the male plug above the boss, and the arc surface on the extension section 55 The section fits with the outer wall of the boss to realize the function of automatic locking and error prevention.

If the male plug is not installed in place, one case is that when the two positioning rods are in the open state compared with the initial position in the two limit holes, the locker is loose, and the other case is that the protrusion of the male plug The platform has passed the position of the positioning rod, but the positioning rod and the positioning bump 13 are not locked in place. From the position of the disassembly hole 122 of the connecting sleeve 1, it can be seen that the two positioning rods are opened outward, that is, the male plug is loose. , The positions of the two limit holes 23 are also convenient for checking the installation status, so as to prevent the lock from loosening and slipping so as to change parts in time.

When dismantling, open the two positioning rods directly from the position of the disassembly hole 122, so that the positioning rods leave the positioning protrusion 13, pull the position of the boss of the male plug out of the position of the positioning rods, and finally loosen the two positioning rods, the structure is simple Compact, the whole disassembly process is simple and fast.

It should be noted that, as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 10 and diagram e in Fig. 8, the fixed block, the limit block and the extension section at the corresponding end are provided with upper and lower through grooves, The grooves at both ends are arranged symmetrically and form a notch structure. When installing, when the push plate 3 is pushed in place, the relief groove (14) communicates with the notch structure. The position can insert related auxiliary tools to assist in pulling the locker for auxiliary disassembly, and it is also convenient for replacing related parts.

In addition, the setting of the first inclined straight section 542 assists the clamping and positioning of the slot on the positioning rod on the one hand, and on the other hand reduces the contact area in the form of an inclined plane, so as to reduce the disassembly resistance.

In order to ensure the strength of use and the elastic requirements for disassembly and assembly, the locking device is integrally injection-molded from nylon 66 material, which is the prior art, and will not be repeated here.

The parts not described in the present invention are consistent with the prior art, and will not be repeated here.

The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structures made using the description of the present invention and the contents of the accompanying drawings are directly or indirectly used in other related technical fields, and are equally applicable to the present invention. within the scope of patent protection.

Claims

A safety pipe joint for automatic connection, comprising a connecting sleeve (1) inserted with a male plug, characterized in that: a locking device is provided in the connecting sleeve (1), and a locking device is provided in the connecting sleeve (1). A first cavity (11) and a second cavity (12) are provided in sequence from top to bottom, and an insertion hole (21) is provided on one side of the first cavity (11), and on the other side, left, Two limit holes (23) are symmetrically provided on the right sides, a notch groove is provided at the bottom of the first cavity (11), and a mounting hole (121) is provided on one side of the second cavity (12). ), the other side is provided with a relief hole (122), the second cavity (12) is provided with a guide block (22) at the position corresponding to the installation hole (121), and one side of the corresponding relief hole (122) Positioning bumps (13) are provided; the locker includes a push plate (3), on the upper end of the push plate (3) there are horizontally protruding first clamping strips (31) and second clamping strips ( 32), two blocks (33) are symmetrically arranged on the two clips, and the two blocks (33) extend into the limit holes (23) at the corresponding ends, between the two clips There is a first stopper (41) and a second stopper (42) between them, the lower end of the push plate (3) is provided with a first positioning rod (51) and a second positioning rod (52), the two The clips all extend into the first cavity (11), the stopper (33) can prevent the lock from falling off, and the two positioning rods and the limit blocks all extend into the second cavity (12), and When the male plug is inserted, the corresponding position on the limit block is attached to the outer wall of the male plug, and the corresponding positions on the two positioning rods are engaged with the positioning protrusions (13) at the corresponding ends for positioning.
The safety pipe joint for automatic connection according to claim 1, characterized in that: a first fixed block ( 441) and the second fixed block (442), the first limit block (41) protruding horizontally is provided at the lower end of the first fixed block (441), and the lower end of the second fixed block (442) There is a second limiting block (42) protruding horizontally, and the end faces of the extending ends of the two limiting blocks are provided with a section of arc surface, and the two sections of the arc surface form a semi-arc shape; The lower end surfaces of the first limiting block (41) and the second limiting block (42) are provided with a section of extending section (55) protruding downward, each of the extending section (55) has a corresponding limiting A segment of arc surface is provided in each extending direction of the block; a reinforcing block (45) is provided between the fixed block and the limiting block at the corresponding end.
The safety pipe joint for automatic connection according to claim 2, characterized in that: the upper end surfaces of the two limiting blocks and the upper end surfaces of the two positioning rods are flush with each other.
The safety pipe joint for automatic connection according to claim 2, characterized in that: the fixed block, the limit block and the extension section at the corresponding end are provided with upper and lower through grooves, and the grooves at both ends are symmetrically arranged and surrounded to form A notch structure; a relief groove (14) is provided at the position corresponding to the notch structure at the cavity bottom of the second cavity (12), and both of the relief grooves (14) communicate with the notch structure.
The automatic connection safety pipe joint according to claim 1, characterized in that: the first positioning rod (51) and the second positioning rod (52) both protrude horizontally from the lower end of the push plate (3), each The protruding ends of the positioning rods are all provided with bending sections (53), each positioning rod is provided with a bump, and the upper end surface of each of the bumps is provided with a section of transition slope (541), the corresponding end The corresponding positions of the bending section (53), the protruding block and the positioning rod are surrounded to form a slot; a connecting block is arranged in the second cavity (12), and left and right symmetrically arranged on the connecting block There are two positioning protrusions (13), and the slots at the corresponding ends are engaged with the positioning protrusions (13) for positioning.
The automatic connection safety pipe joint according to claim 5, characterized in that: the outer wall of each of the protrusions includes a first inclined straight section (542), and the first inclined straight section (542) The highest end is connected with a second oblique straight section (543), and the lowest end of the second oblique straight section (543) is connected with a circular arc section (544), and the lowest end of the circular arc section (544) is positioned with the corresponding end Corresponding positions on the inner side walls of the rods are connected.