Connecting device capable of recognizing proper assembly

Abstract

The present invention discloses a connection device capable of recognizing being assembled in place, which is used for clamping and communicating inserted pipe fittings, and includes a housing. An upper jack and a lower jack for inserting and communicating with the pipe fittings are provided in the housing. Locking support columns are provided in both of the two jacks. A locking device is provided at the top of the locking support column. A calibration support column is elastically arranged outside the locking support column. A calibration knob elastically sleeved with a knob is clamped at the upper end of the calibration support column. The knob is screwed and connected to the corresponding end of the jack, and presses the locking device to clamp the pipe fitting. The present invention sets the calibration support column to limit the locking support column, and uses the calibration knob to clamp and limit the calibration support column, and sets the knob to be screwed and press the locking device, so as to achieve the purpose that the pipe fitting can be screwed and locked only when it is inserted in place. The structure is simple and compact, and the operation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive pipeline connection, and particularly to a connection device capable of recognizing being assembled in place. Background Art

[0002] At present, in order to achieve the connection between two pipe fittings in the automotive pipeline system, a male plug is usually adopted and a quick-insert female connection joint is arranged on the male plug for conversion connection. This not only increases the number of parts, resulting in increased costs, but also reduces production efficiency. Although there are already connection devices that can directly connect two pipes, it is impossible to confirm whether the insertion end of the pipe fitting is installed in place, which may lead to the risk of leakage of vehicle fluid media due to improper installation, increasing the vehicle use cost and reducing the driving safety. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a connection device capable of recognizing being assembled in place, which can not only achieve quick clamping but also facilitate the recognition of the clamping state.

[0004] To solve the above technical problem, a technical solution adopted by the present invention is: to provide a connection device capable of recognizing being assembled in place for clamping and connecting the inserted pipe fittings, including a housing. An upper jack and a lower jack for inserting and connecting the pipe fittings and communicating with each other are arranged in the housing. Both the upper jack and the lower jack are stepped holes. A connecting hole is arranged between the two jacks for communication. A first slot is arranged at the bottom of the stepped hole, and two second slots which are symmetrically arranged and communicated with the first slot are provided. A section of thread is arranged at the large hole orifice of the stepped hole. Locking support columns are arranged in both of the two jacks. The locking support columns are of a hollow structure. Two extension blocks are symmetrically arranged at one end of the locking support column. The two extension blocks extend into the first slot to limit the locking support column in the horizontal direction. A lock is arranged at the top of the locking support column.

[0005] A calibration support column is elastically arranged outside the locking device support column. A first spring is sleeved on the outer side wall of the calibration support column. At one end of the outer side wall of the calibration support column, two inclined blocks are symmetrically arranged. At the position corresponding to the second slot at the other end, bosses are arranged. Both of the inclined blocks are wound around the outer peripheral surface of the calibration support column. On the same side of the upper end surface of each inclined block, there is a section of inclined plane. During use, the extension block extends into the first slot, the boss extends into the second slot, and the upper end surface of the first spring abuts against the lower end surface of the inclined block, and the lower end surface of the first spring abuts against the bottom of the stepped hole. A calibration knob elastically sleeved with the knob is clamped at the upper end of the calibration support column. The calibration knob includes an annular boss provided with a central hole. At the upper end of the annular boss, positioning blocks are symmetrically arranged. At the position corresponding to the gap between the two inclined blocks at the lower end, a limiting block is arranged. The width dimension of the limiting block is adapted to the gap dimension between the two inclined blocks. At the position corresponding to the annular boss in the jack, there is a stepped surface. The upper end surface of the stepped surface abuts against and limits the lower end surface of the annular boss. The knob is screwed and connected to the corresponding jack and presses the locking device to clamp the pipe fitting.

[0006] With the above structure, only need to insert the two pipe fittings to be connected into the upper jack and the lower jack respectively. The pipe fitting pushes the corresponding calibration support column inward to move to the bottom of the jack. At this time, the clamped calibration support column and the calibration knob are separated. Then, screw and tighten the knob and make the knob move into the jack. The end of the knob extending into the jack abuts against and presses the locking device, and makes the locking device deform and shrink and fit tightly to clamp the pipe. When the knob is screwed and riveted tightly, the purpose of locking and positioning the pipe is achieved. When disassembling, twist the knob to screw out and leave the pressed locking device. The locking device gradually loosens the outer side wall of the pipe fitting. Under the action of the elastic force, it also drives the calibration knob to move out and unscrew and unlock. After unscrewing, the calibration support column pops out under the action of the elastic force. While the pipe fitting moves outward, the calibration knob and the calibration support column resume the clamped connection state. At this time, the calibration support column and the calibration knob rotate or move simultaneously. Even if the knob is tightened, the knob moves horizontally along the spiral direction. Under the action of the elastic force, the calibration support column and the calibration knob also move horizontally at the same time and drive the locking device to move synchronously. The knob cannot abut against and press the locking device, and cannot be unscrewed or tightened. The inserted end of the pipe fitting is always in an unlocked state. From this, the assembly state of the inserted pipe fitting can be judged, that is, only when the pipe fitting is inserted in place can the purpose of screwing the knob and locking be achieved. The structure is simple and compact, and the operation is convenient.

[0007] In order to facilitate the limit installation of the locking device support column and the calibration support column, as a preference, a through hole is arranged in the middle of the calibration support column. At one end of the through hole, a baffle is arranged. In the middle of the baffle, a liquid outlet hole is arranged. At the position corresponding to the extension block on the baffle, a guiding hole is arranged. The extension section passes through the guiding hole and extends into the first slot.

[0008] For the purpose of simplifying the structure and facilitating installation, preferably, a cover plate is provided on the knob. A communication hole for the pipe fitting to pass through is provided in the middle of the knob. A convex block is provided at the lower end of the knob. An annular groove with an opening downward is provided on the convex block. A positioning groove is communicated and provided at a position corresponding to the positioning block on the inner side wall of the annular groove. During installation, the positioning block is inserted into the positioning groove, and a second spring is sleeved on the outer wall of the positioning block. One end of the second spring abuts against the bottom of the annular groove, and the other end abuts against the upper end surface of the annular convex platform.

[0009] For the purpose of facilitating installation and clamping the lock stopper, preferably, two symmetrically arranged extension segments are provided on the outer side wall of the knob at positions corresponding to the positioning grooves. The inner wall of the hole opening at the end of the communication hole adjacent to the lock stopper has a tapered surface structure with a smaller inner diameter and a larger outer diameter. A guiding hole for the pipe fitting to pass through is provided in the middle of the lock stopper. A transition inclined surface is provided on the outer side wall of one end of the lock stopper. An opening is provided on one side of the lock stopper. During installation, the extension segments extend into and press against the end surfaces of the corresponding ends of the calibration support columns. The outer wall of the knob fits against the inner wall of the middle through hole of the calibration support column. The tapered surface structure fits against and presses the transition inclined surface and presses the lock stopper, the width of the opening shrinks and becomes smaller, and the inner wall of the guiding hole abuts tightly against the outer wall of the pipe fitting and is fixed.

[0010] For the purpose of ensuring the sealing performance, preferably, a threaded section screwed with the jack is provided on the outer wall of the convex block. A limiting groove for embedding the first sealing ring is provided at the root position of the threaded section on the outer side wall of the convex block. A chamfering inclined surface corresponding to the first sealing ring is provided on the inner wall of the jack hole of the housing.

[0011] For the purpose of ensuring double-layer sealing performance, preferably, an embedding groove is provided on the hole wall at one end of the communication hole, and a second sealing ring is provided in the embedding groove.

[0012] Beneficial effects: The present invention is provided with a calibration support column to limit the support column of the lock stopper, and a calibration knob is used to clamp and limit the calibration support column. The knob is screwed and presses the lock stopper, so as to achieve the purpose that the pipe fitting can be inserted in place before the knob can be screwed and tightened. The structure is simple and compact, and the operation is convenient. Description of the Drawings

[0013] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0015] Figure 2 It is an exploded view of the structure of the present invention.

[0016] Figure 3 It is a structural schematic diagram of the housing.

[0017] Figure 4 is the top view of Figure 3 .

[0018] Figure 5 is the schematic perspective view of the knob.

[0019] Figure 6 is the sectional view of the structure of the knob.

[0020] Figure 7 is Figure 6 's bottom view.

[0021] Figure 8 is the schematic perspective view of the calibration support column.

[0022] Figure 9 is Figure 8 's top view.

[0023] Figure 10 is the schematic perspective view of the calibration knob.

[0024] Figure 11 is Figure 10 's bottom view.

[0025] Figure 12 is the schematic perspective view of the locking device support seat.

[0026] Figure 13 is the schematic perspective view of the locking device.

[0027] Figure 14 is the sectional view of the structure of the locking device.

[0028] Figure 15 is the usage state diagram of the present invention.

[0029] The meanings of the reference numerals in the drawings are as follows:

[0030] housing - 1; connecting hole - 10; upper jack - 11; lower jack - 12; first slot - 13; second slot - 14; relief inclined plane - 15;

[0031] knob - 2; cover plate - 20;; communication hole - 21; convex block - 22; annular groove - 23; positioning groove - 231; extension section - 24;

[0032] calibration support column - 4; liquid outlet hole - 40; baffle - 41; guide hole - 42; inclined block - 43; inclined plane - 431; convex platform - 44;

[0033] calibration knob - 5; annular convex platform - 51; limit block - 52; positioning block - 53;

[0034] Locking device support column - 6; Extension block - 61; Locking device - 7; Transition inclined plane - 71; Opening - 72;

[0035] First sealing ring - 81; Second sealing ring - 82; First spring - 91; Second spring - 92. Detailed implementation mode

[0036] As Figures 1 to 15 shown, the present invention is used to clamp and connect the inserted pipe fittings, including a housing 1. An upper jack 11 and a lower jack 12 for inserting pipe fittings and communicating with each other are provided in the housing 1. Locking device support columns 6 are provided in both of the jacks. A locking device 7 is provided at the top of the locking device support column 6. A calibration support column 4 is elastically arranged outside the locking device support column 6. A calibration knob 5 elastically sleeved with a knob 2 is clamped at the upper end of the calibration support column 4. The knob 2 is screwed to the corresponding end of the jack and presses the locking device 7 to clamp the pipe fitting.

[0037] Specifically, both the upper jack 11 and the lower jack 12 are stepped holes. A connecting hole 10 is provided for communication between the two jacks. A first slot 13 is provided at the bottom of the stepped hole, and two second slots 14 that are communicated with the first slot 13 and symmetrically arranged are provided. A section of thread is provided at the large hole orifice of the stepped hole. The locking device support column 6 is of a hollow structure. Two extension blocks 61 are symmetrically provided at one end of the locking device support column 6. A through hole is provided in the middle of the calibration support column 4. A baffle 41 is provided at one end of the through hole. A liquid outlet hole 40 is provided in the middle of the baffle 41. A guiding hole 42 is provided at the position corresponding to the extension block 61 on the baffle 41. The two extension blocks 61 pass through the corresponding guiding holes 42 and extend into the first slot 13 to limit the locking device support column 6 in the horizontal direction.

[0038] A first spring 91 is sleeved on the outer side wall of the calibration support column 4. Two inclined blocks 43 are symmetrically provided at one end of the outer side wall of the calibration support column 4. Protrusions 44 are provided at the positions corresponding to the second slots 14 at the other end. The two inclined blocks 43 are wound around the outer peripheral surface of the calibration support column 4. A section of inclined plane 431 is provided on the same side of the upper end surface of each inclined block 43. During use, the extension block 61 extends into the first slot 13, the protrusion 44 extends into the second slot 14, and the upper end surface of the first spring 91 abuts against the lower end surface of the inclined block 43, and the lower end surface of the first spring 91 abuts against the bottom of the stepped hole.

[0039] The calibration knob 5 includes an annular boss 51 provided with a central hole. Symmetric positioning blocks 53 are provided at the upper end of the annular boss 51, and a limiting block 52 is provided at the lower end corresponding to the gap position between the two inclined blocks 43. The width dimension of the limiting block 52 is adapted to the gap dimension between the two inclined blocks 43. A stepped surface is provided at the position corresponding to the annular boss 51 in the jack, and the upper end surface of the stepped surface abuts against and limits the lower end surface of the annular boss 51. A cover plate 20 is provided on the knob 2. A communication hole 21 for the pipe fitting to pass through is provided in the middle of the knob 2. A convex block 22 is provided at the lower end of the knob 2. An annular groove 23 with an opening downward is provided on the convex block 22. A positioning groove 231 is communicated and provided at the position corresponding to the positioning block 53 on the inner side wall of the annular groove 23. During installation, the positioning block 53 is inserted into the positioning groove 231, and a second spring 92 is sleeved on the outer wall of the positioning block 53. One end of the second spring 92 abuts against the bottom of the annular groove 23, and the other end abuts against the upper end surface of the annular boss 51.

[0040] Two symmetrically arranged extension segments 24 are provided on the outer side wall of the knob 2 corresponding to the position of the positioning groove 231. The inner wall of the orifice of the communication hole 21 adjacent to one end of the lock 7 has a tapered surface structure with a smaller inner diameter and a larger outer diameter. A directional hole for the pipe fitting to pass through is provided in the middle of the lock 7. A transition inclined surface 71 is provided on the outer side wall of one end of the lock 7. An opening 72 is provided on one side of the lock 7. During installation, the extension segments 24 extend into and press the end face of the corresponding end of the calibration support column 4. The outer wall of the knob 2 fits with the inner wall of the middle through hole of the calibration support column 4. The tapered surface structure fits and abuts against the transition inclined surface 71 and presses the lock 7. The width of the opening 72 contracts and becomes smaller, and the inner wall of the directional hole abuts against and fixes the outer wall of the pipe fitting.

[0041] A threaded section for screwing with the jack is provided on the outer wall of the convex block 22. A limiting groove for embedding the first sealing ring 81 is provided at the root position of the threaded section on the outer side wall of the convex block 22. A chamfered surface 15 for the first sealing ring 81 is provided on the inner wall of the orifice of the jack of the housing 1. An embedding groove is provided on the hole wall at one end of the communication hole 21, and a second sealing ring 82 is provided in the embedding groove.

[0042] The working principle of the present invention is as follows:

[0043] As Figures 1 to 3 shown, the structures of the upper jack 11 and the lower jack 12 are the same, and the components arranged in the two jacks are also the same. In this embodiment, the disassembly and assembly and use of the pipe fitting in the upper jack 11 are taken as an example for description.

[0044] As Figure 2 、 Figures 4 to 15As shown, when in use, insert the pipe fitting into the upper jack 11. The pipe fitting passes through the communication hole 21, the central hole of the annular boss 51, the orientation hole of the lock 7, and the hollow position of the lock support column 6 in sequence, and finally abuts against the baffle 41 at the lower end of the calibration support column 4. The guide hole 42 moves into the upper jack 11 along the extension block 61, while pulling and stretching the first spring 91. The extension section 24 extends into and presses the upper end face of the calibration support column 4. The outer wall of the knob 2 fits against the wall of the middle through hole of the calibration support column 4 until the calibration support column 4 moves to the bottom position of the upper jack 11. At this time, the limit block 52 moves out from the gap between the two inclined blocks 43, that is, the clamped calibration support column 4 is separated from the calibration knob 5. Then, screw and tighten the knob 2 and move the knob 2 into the upper jack 11, squeezing the second spring 92. The conical structure at the orifice of the communication hole 21 abuts against and presses the lock 7, and makes the opening 71 position of the lock 7 contract and the wall of the orientation hole fit. Since there are locking tongues on the wall of the orientation hole (as Figure 14 shown in the state), it is more conducive to clamping the pipe. When the knob 2 is screwed and riveted tightly, the purpose of locking and positioning the pipe is achieved (as Figure 15 shown in figure b of

[0045] . When disassembling, twist the knob 2 to screw it out and make the extension section 24 leave the pressed lock 7. The lock 7 gradually loosens the outer wall of the pipe fitting. Under the elastic force of the second spring 92, it also drives the calibration knob 5 to move out and unscrew and unlock. At the same time, after unscrewing, the calibration support column 4 pops out under the elastic force of the first spring 91. While the pipe fitting moves outwards, the limit block 52 moves back to the gap between the two inclined blocks 43, and the positioning block 53 extends into the positioning groove 231, that is, the calibration knob 5 and the calibration support column 4 resume the clamped connection state. At this time, the calibration knob 5 can rotate simultaneously with the knob 2, but due to the socket connection between the guide hole 42 and the extension block 61, the extension block 61 is in the first slot 13, and the boss 44 is in the second slot 14, and the first slot 13 and the second slot 14 are connected but do not form a circular groove, so in the circumferential direction of the rotation of the knob 2, the calibration support column 4 cannot rotate with the calibration knob 5, that is, the knob 2 cannot be screwed and riveted tightly in the upper jack 11 at this time, and the insertion end of the pipe fitting is always in an unlocked state (as Figure 15 shown in figure a of

[0046] . Thus, the assembly state of the inserted pipe fitting can be judged, that is, the pipe fitting can be inserted in place to achieve the purpose of screwing and locking the knob 2. Figure 2 , Figures 8 to 10 and Figure 15As shown, during the above-mentioned use process, the inclined surface 431 is mainly provided to facilitate the return of the limit block 52 to its in-place position when there is an offset in the gap between the limit block 52 and the two inclined blocks 43. That is, when the limit block 52 rotates with the knob, under the elastic force of the first spring 91, the calibration support column 4 moves outward. When the position is offset, the lower end surface of the limit block 52 abuts against the upper end surface of the inclined surface 431. At this time, under the elastic force of the first spring 91, relative movement occurs between the limit block 52 and the inclined surface 431, and the limit block 52 moves downward along the inclined surface 431 and finally returns the limit block 52 to the gap position between the two inclined blocks 43 to achieve clamping and limiting.

[0047] In addition, when the knob 2 is screwed and tightened, the lower end surface of the cover plate 20 abuts against the end surface at the orifice of the upper jack 11, and the first sealing ring 81 is located at the position of the relief inclined surface 15, mainly to prevent the oil from overflowing in the upper jack 11; similarly, the second sealing ring 82 provided in the knob 2 is to prevent the oil from overflowing from the gap between the pipe fitting and the communication hole 21. In this way, it plays a role of double sealing to ensure the tightness of use.

[0048] Similarly, when inserting the pipe fitting into the lower jack 12, the relevant components can be disassembled and assembled according to the aforementioned operation method, which will not be elaborated here. Finally, after the two inserted pipe fittings are clamped and fixed, they are connected through the liquid outlet hole 40 and the connection hole 10.

Claims

1. A connecting device capable of recognizing the assembled position, used for clamping and connecting the inserted pipe fittings, characterized in that: It includes a housing (1), in which there are inserted pipe fittings and an upper jack (11) and a lower jack (12) that are interconnected. Both the upper jack (11) and the lower jack (12) are stepped holes. A connecting hole (10) is provided for communication between the two jacks. At the bottom of the stepped hole, there is a first slot (13) and two second slots (14) that are communicated with the first slot (13) and symmetrically arranged. The first slot (13) and the second slot (14) are communicated but do not form a circular slot. At the orifice of the large hole of the stepped hole, there is a section of thread; in both of the two jacks, there is a locking support column (6). The locking support column (6) is a hollow structure. At one end of the locking support column (6), there are two extension blocks (61) symmetrically arranged. The two extension blocks (61) extend into the first slot (13) to limit the locking support column (6) in the horizontal direction. At the top of the locking support column (6), there is a lock (7). An inspection support column (4) is elastically arranged on the outside of the locking support column (6). A first spring (91) is sleeved on the outer wall of the inspection support column (4). At one end of the outer wall of the inspection support column (4), there are two inclined blocks (43) symmetrically arranged. At the other end corresponding to the position of the second slot (14), there are bosses (44). The two inclined blocks (43) are both wound around the outer peripheral surface of the inspection support column (4). On the same side of the upper end surface of each inclined block (43), there is a section of inclined surface (431); during use, the extension block (61) extends into the first slot (13), the boss (44) extends into the second slot (14), and the upper end surface of the first spring (91) abuts against the lower end surface of the inclined block (43), and the lower end surface of the first spring (91) abuts against the bottom of the stepped hole; an inspection knob (5) elastically sleeved with a knob (2) is clamped at the upper end of the inspection support column (4). The inspection knob (5) includes an annular boss (51) provided with a central hole. At the upper end of the annular boss (51), there are positioning blocks (53) symmetrically arranged. At the lower end corresponding to the gap position between the two inclined blocks (43), there is a limiting block (52). The width dimension of the limiting block (52) is adapted to the gap dimension between the two inclined blocks (43); at the position corresponding to the annular boss (51) in the jack, there is a stepped surface. The upper end surface of the stepped surface abuts against and limits the lower end surface of the annular boss (51). The knob (2) is screwed to the corresponding jack and presses the lock (7) to clamp the pipe fitting.

2. The connection device capable of recognizing proper assembly according to claim 1, characterized in that: A through hole is provided in the middle of the inspection support column (4). At one end of the through hole, there is a baffle (41). In the middle of the baffle (41), there is a liquid outlet hole (40). At the position corresponding to the extension block (61) on the baffle (41), there is a guide hole (42). The extension block (61) passes through the guide hole (42) and extends into the first slot (13).

3. The connecting device capable of recognizing the in-place assembly according to claim 1, characterized in that: A cover plate (20) is provided on the knob (2). A communication hole (21) for a pipe fitting to pass through is provided in the middle of the knob (2). A convex block (22) is provided at the lower end of the knob (2). An annular groove (23) with an opening downward is provided on the convex block (22). A positioning groove (231) is communicated and provided on the inner side wall of the annular groove corresponding to the position of the positioning block (53). During installation, the positioning block (53) is inserted into the positioning groove (231), and a second spring (92) is sleeved on the outer wall of the positioning block (53). One end of the second spring (92) abuts against the bottom of the annular groove (23), and the other end abuts against the upper end surface of the annular boss (51).

4. The connection device capable of recognizing proper assembly according to claim 3, characterized in that: Two symmetrically arranged extension segments (24) protrude on the outer side wall of the knob (2) at the position corresponding to the gap between the two positioning grooves (231). The inner wall of the orifice of the communication hole (21) near the end of the stopper (7) has a tapered surface structure with a smaller inner diameter and a larger outer diameter. A guiding hole for a pipe fitting to pass through is provided in the middle of the stopper (7). A transition inclined surface (71) is provided on the outer side wall of one end of the stopper (7). An opening (72) is provided on one side of the stopper (7). During installation, the extension segments (24) extend into and press against the end surface of the corresponding end of the calibration support column (4). The outer wall of the knob (2) fits against the inner wall of the through hole in the middle of the calibration support column (4). The tapered surface structure fits against and presses the transition inclined surface (71) and presses the stopper (7), the width of the opening (72) shrinks and becomes smaller, and the inner wall of the guiding hole presses tightly against the outer wall of the pipe fitting and is fixed.

5. The connection device capable of recognizing proper assembly according to claim 3, characterized in that: A threaded section screwed with the jack is provided on the outer wall of the convex block (22). A limiting groove for embedding a first sealing ring (81) is provided on the outer side wall of the convex block (22) at the root position of the threaded section. A relief inclined surface (15) is provided on the inner wall of the orifice of the jack in the housing (1) corresponding to the position of the first sealing ring (81).

6. The connection device capable of recognizing proper assembly according to claim 3, characterized in that: A slot is provided on the inner wall of one end of the communication hole (21), and a second sealing ring (82) is provided in the slot.

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