Quick clamping piece
Technical Field
The utility model relates to the technical field of pipeline connection, in particular to a quick clamping piece.
Background
In order to achieve communication between the liquid supply pipe and the hose, a quick connection structure is generally used to connect the liquid supply channel and the hose, so that the liquid in the liquid supply channel can smoothly flow into the hose.
When the liquid supply channel and the hose are established and normally work, the liquid pressure exists in the pipeline, and after long-term work, the sealing ring and other supporting pieces of the quick connecting structure can deform, so that the quick connecting structure is unstable.
Disclosure of utility model
The utility model provides a quick clamping piece, which not only can realize quick connection of pipelines, but also can prevent unstable connection of the clamping piece caused by liquid pressure.
The quick clamping piece comprises a shell, wherein the shell comprises a first connecting section, a contraction section and a second connecting section, a first step is formed at the junction of the first connecting section and the contraction section, a second step is formed at the junction of the contraction section and the second connecting section,
The first connecting section is internally provided with a clamping connector and a positioning ring, a spring piece is arranged between the clamping connector and the positioning ring, the spring force of the spring piece acts on the clamping connector and the positioning ring, the clamping connector is provided with a first clamping groove, an upper clamping groove and a lower clamping groove are arranged on the shell, the clamping connector can axially move in the first connecting section so as to be switched between a locking position and an opening position, when the clamping connector is positioned at the locking position, the positions of the first clamping groove, the upper clamping groove and the lower clamping groove are aligned along the direction perpendicular to the axis, and when the clamping connector is positioned at the opening position, the first clamping groove, at least one of the upper clamping groove and the lower clamping groove are staggered along the direction perpendicular to the axis;
The quick clamping piece further comprises a locking piece, the locking piece can be switched between a locking position and an opening position, when the locking piece is located at the locking position, the first wing part of the locking piece penetrates through the upper clamping groove and the first clamping groove and stretches out of the lower clamping groove, and when the locking piece is located at the opening position, the first wing part is separated from the first clamping groove.
Further, the first fin portion includes a fin foot located below, the fin foot extending from the outer surface of the first connection section by a length of 2-5mm in the locked position.
Further, the locating ring comprises a first limiting ring, the clamping connector is provided with a second limiting ring, and the second limiting ring is sleeved on the first limiting ring and can axially move relative to the first limiting ring.
Further, the locating ring comprises a skirt edge and a first limiting part, the skirt edge is abutted against the first step by the elastic force of the spring piece, the first limiting part extends into the contraction section, a first sealing ring is arranged in the contraction section, and the first limiting part has a certain length so as to be capable of extruding the first sealing ring.
Further, the length of the first limiting part is 2-4mm.
Further, a reinforcing ring and a second sealing ring are further arranged between the first limiting part and the first sealing ring, and the hardness of the reinforcing ring is greater than that of the first sealing ring and the second sealing ring.
Further, the locking piece comprises a pressing part and a side part, the upper surface of the pressing part is planar, the side part comprises a first arc-shaped surface and a second arc-shaped surface, and the first arc-shaped surface and the second arc-shaped surface are matched with the periphery of the first connecting section.
Further, the locking piece further comprises a second wing part, the second wing part is arranged opposite to the first wing part, and the second wing part is matched with the outer end face of the first connecting section.
Further, the hardness of the first sealing ring and the second sealing ring is 80HD-100HD.
Further, the clamping connector is provided with a second limiting part, the first connecting section is provided with a limiting groove, and the second limiting part is arranged in the first limiting groove and can reciprocate in the limiting groove along the axial direction.
The technical scheme of the utility model has the following technical effects:
when the clamping connector and the locking piece are in an open state, the clamping connector blocks the locking piece from moving under the action of the spring piece, so that the locking piece is in a stable state, and misoperation can be effectively prevented. After the liquid supply pipeline is inserted into the clamping connector, the clamping connector is pushed to move to a locking state, and the locking piece can move to the locking state at the moment, so that the clamping connector is maintained to be in the locking state, the liquid supply pipeline is fixed in the clamping connector, the connection between the liquid supply pipeline and the quick clamping piece is realized, and the operation is simple and quick. When the locking piece is in a locking state, the first wing part of the locking piece penetrates through the upper clamping groove and the first clamping groove to extend out of the lower clamping groove, so that the locking state of the locking piece is more stable, and deformation of the first wing part caused by pressure of the liquid supply pipeline is prevented.
Double sealing is formed through the first sealing ring and the second sealing ring, and the reinforcing piece is arranged on the first sealing ring and the second sealing ring, so that liquid leakage caused by overlarge deformation of the sealing ring due to internal pressure is prevented, and the double sealing device is particularly suitable for occasions with larger internal liquid pressure.
Drawings
Fig. 1 is a schematic diagram of an explosion structure of a first embodiment.
Fig. 2 is a schematic perspective view of the first embodiment.
Fig. 3 is a schematic cross-sectional view illustrating a quick connector according to an embodiment in an open state.
Fig. 4 is a schematic cross-sectional view illustrating a quick connector according to an embodiment in a locked state.
The shell 1, the first connecting section 11, the contraction section 12, the second connecting section 13, the first step 51, the second step 52, the first sealing ring 2, the reinforcing member 3, the second sealing ring 4, the positioning ring 6, the skirt 61, the first limiting ring 63, the clamping head 8, the head 82, the first clamping groove 821, the second limiting ring 81, the spring piece 7, the outer end surface 822, the inner end surface 823, the second limiting part 83, the limiting groove 16, the upper clamping groove 14, the lower clamping groove 15, the locking member 9, the pressing part 91, the side part 92, the first wing part 93, the second wing part 94, the first arc surface 921, the second arc surface 922, the half wing 931 and the wing foot 932.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
It should be noted that, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality of" means two or more, and the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc. are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The utility model provides a quick joint spare, includes casing 1, and casing 1 includes first linkage segment 11, shrink section 12 and second linkage segment 13, and second linkage segment 12 is used for connecting hose or other pipelines, and first linkage segment 11 is used for connecting the liquid supply pipeline that is equipped with the tang to realize the sealing connection of liquid supply pipeline and hose or other pipelines.
The inner aperture of the first connecting section 11 is larger than the inner aperture of the shrinking section 12, and the inner aperture of the shrinking section 12 is larger than the inner aperture of the second connecting section 13, so that a first step 51 is formed at the junction of the first connecting section 11 and the shrinking section 12, and a second step 52 is formed at the junction of the shrinking section 12 and the second connecting section 13. The first sealing ring 2 is arranged in the contraction section, the outer diameter of the first sealing ring is between the inner diameter of the contraction section 12 and the inner diameter of the second connecting section 13, the inner diameter of the first sealing ring is matched with the outer diameter of the liquid supply pipeline in size, the first sealing ring 2 is arranged on one side close to the second step 52, and when the first sealing ring 2 receives external force, the sealing ring 2 can be abutted against the first step. Still be equipped with reinforcement 3 and second sealing washer 4 in the shrink section 12, the hardness of reinforcement 3 is greater than first sealing washer 2 and sets up in the outside of first sealing washer 2, and second sealing washer 4 sets up in the outside of reinforcement 3, through setting up the great reinforcement 3 of hardness, provides certain intensity for first sealing washer 2 and second sealing washer 4, avoids second sealing washer 2 and second sealing washer 4 to take place deformation when receiving external force. The hardness of the first sealing ring 2 and the second sealing ring 4 is 80HD-100HD.
The positioning ring 6 is provided with a skirt 61, the outer diameter of the skirt 61 is between the inner diameter of the first connecting section 11 and the inner diameter of the shrinking section 12, when the positioning ring 6 is subjected to external force, the skirt 61 is abutted against the second step 52, the positioning ring 6 is provided with a first limiting part 62 extending into the shrinking section 12, the second limiting part 62 has a certain length, usually 2-4mm, and when the skirt 61 is abutted against the second step 52, the first limiting part 62 can effectively squeeze the second sealing ring 4, so as to press the second sealing ring 4, the reinforcing member 3 and the first sealing ring 2 and press the second sealing ring on the first step 51.
The positioning ring 6 further comprises a first limiting ring 63 arranged in the first connecting section 11, the head 82 of the clamping connector 8 is provided with a first clamping groove 821, one end of the head 82 is extended with a second limiting ring 81, and the diameter of the second limiting ring 81 is smaller than that of the head 82, so that a pipeline of the liquid supply channel can extend into the second limiting ring 81, and a flange of the liquid supply channel contacts with the inner end face 823 of the head 82 and cannot enter the second limiting ring 81. The second spacing ring 81 is sleeved on the periphery of the first spacing ring 63, the inner diameter of the second spacing ring 81 is matched with the outer diameter of the first spacing ring 63, the spring piece 7 is sleeved on the periphery of the first spacing ring 63 and the second spacing ring 81, one end of the spring piece 7 abuts against the skirt 61, the other end of the spring piece 7 abuts against the outer 822 of the end face of the head 82, the elastic force of the spring piece 7 enables the skirt of the positioning ring 6 to abut against the first step 51, so that the first spacing part 62 effectively extrudes the second sealing ring 4, and the first sealing ring 3 is extruded on the second step 52 through the reinforcing piece 3. An upper clamping groove 14 and a lower clamping groove 15 are arranged on the shell 1,
The clamping connector 8 is provided with a second limiting part 83 and a first connecting section limiting groove 16, and the second limiting part 83 is arranged in the first limiting groove 16 and can reciprocate in the first limiting groove 16 along the axial direction, so that the clamping connector 8 can be switched between an open position and a locking position. When the clamping connector 8 is positioned at the opening position, the positions of the first clamping groove 821 and the upper clamping groove 14 and the lower clamping groove 15 are staggered, and when the clamping connector 8 is positioned at the locking position, the positions of the first clamping groove 821 and the upper clamping groove 14 and the lower clamping groove 15 are correspondingly arranged, namely, the positions of the first clamping groove 821 and the upper clamping groove 14 and the lower clamping groove 15 are aligned along the direction vertical to the axis.
The quick clamping piece further comprises a locking piece 9, the locking piece 9 comprises a pressing portion 91, a side portion 92, a first wing portion 93 and a second wing portion 94, the upper surface of the pressing portion 91 is planar, the side portion 92 is located below the pressing portion, the side portion 92 is provided with a first arc-shaped surface 921 and a second arc-shaped surface 922, the second arc-shaped surface 922 is located below the first arc-shaped surface 921, and the first arc-shaped surface 921 and the second arc-shaped surface 922 are matched with the periphery of the first connecting section 11. The first fin 93 and the second fin 94 extend downward from the pressing portion 91, the first fin 93 includes two half fins 931, the lower portion of the half fin 931 extends to form a fin foot 932, an arc opening is formed between the two half fins, when the second arc surface 922 contacts the outer periphery of the first connection segment 11, the locking member 9 is in an open state, at this time, the first fin 93 passes through the upper clamping groove 14, the first fin 93 is disengaged from the first clamping groove 821, and the clamping joint 8 can pass through the arc opening. When the first arc surface 921 contacts with the periphery of the first connecting section 11, the locking member 9 is in a locking state, at this time, the first fin portion 93 passes through the upper clamping groove 14 and the first clamping groove 821, so that the locking of the clamping head 8 is realized, the fin feet 932 pass through the lower clamping groove 15 and extend out of the lower clamping groove 15, and the length of the fin feet extending out of the outer surface of the connecting section at the locking position is 2-5mm, so that the locking member is more stable, and the deformation of the locking member caused by long-term pressure in the liquid supply pipeline is prevented. The second fin portion 94 is opposite to the first fin portion 93, and the second fin portion 94 is matched with the outer end face of the first connecting section 11, so that the fixing effect of the locking piece is further enhanced, and deformation caused by pressure in the pipeline is prevented.
The assembled view of the quick-locking member is shown in fig. 2-4, in a natural state, the second arc-shaped surface 922 is matched with the first connecting section 11, the quick-locking member is shown in fig. 3, the locking member 9 is in an open state, the elastic force of the spring piece 7 pushes the locking member 8 to an open position, and the first wing 93 of the locking member 9 is blocked by the locking member 8 and cannot move. When the liquid supply pipeline is inserted from the clamping connector, the liquid supply pipeline sequentially penetrates through the clamping connector 8, the positioning ring 6, the second sealing ring 4, the reinforcing piece 3 and the first sealing ring 2 to stretch into the second connecting section 13, and the second sealing ring 4 and the first sealing ring 2 enable the liquid supply pipeline to form sealing connection with the contraction end. In the process of inserting the liquid supply pipeline, the flange on the liquid supply pipeline contacts the inner end face 823 of the clamping connector 8 and pushes the clamping connector 8 to move to the locking position along the axial direction towards the positioning ring 6, at the moment, the locking piece is pressed to enable the locking piece 9 to move downwards to the locking position, at the moment, the first wing portion 93 penetrates through the first clamping groove 821 to fix the clamping connector 8 at the locking position, and the flange of the liquid supply pipeline is fixed between the first wing portion 93 and the inner end face 823 of the clamping structure 8, so that the fixing of the liquid supply pipeline and the quick clamping piece is effectively achieved. When the liquid supply pipe and the flange are required to be taken out, the locking piece 9 slides upwards until the second arc-shaped surface 922 is matched with the connecting section 11, at the moment, the elastic force of the spring piece 7 pushes the clamping connector to move to the opening position, and at the moment, the liquid supply pipe and the flange can be taken out easily.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.