CN114233961A - Washing machine water injection joint device for testing - Google Patents
Washing machine water injection joint device for testing Download PDFInfo
- Publication number
- CN114233961A CN114233961A CN202111374636.9A CN202111374636A CN114233961A CN 114233961 A CN114233961 A CN 114233961A CN 202111374636 A CN202111374636 A CN 202111374636A CN 114233961 A CN114233961 A CN 114233961A
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- piston
- air outlet
- air flow
- flow channel
- washing machine
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000005406 washing Methods 0.000 title claims abstract description 40
- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000009434 installation Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 230000000670 limiting effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/0845—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of retaining members associated with the packing member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
Abstract
The invention relates to the technical field of washing machines, and discloses a water injection joint device of a washing machine for testing, which comprises: the cylinder body is provided with a mounting cavity and an air source inlet; the piston assembly comprises a water inlet rod and a piston which is sleeved on the water inlet rod in a lifting manner; the cylinder body is internally provided with a first airflow channel and a second airflow channel which respectively form a first air outlet and a second air outlet on the cylinder body; the piston can move up and down along the space between the first air outlet and the second air outlet; the connecting mechanism comprises a supporting sleeve and a plurality of threaded grabbing feet, the supporting sleeve is sleeved on the water inlet rod and connected with the piston, and when the piston moves from one end close to the second air outlet to one end close to the first air outlet, the plurality of threaded grabbing feet are outwards opened; when the piston moves from one end close to the first air outlet to one end close to the second air outlet, the plurality of thread grabbing feet are inwards closed to each other; the control switch is used for controlling the movement direction of the piston. The invention has the advantages of compact structure, light weight, high installation efficiency, convenient connection and fixation and good effect.
Description
Technical Field
The invention relates to the technical field of washing machines, in particular to a water injection joint device of a washing machine for testing.
Background
The washing machine is an indispensable household appliance in life, the washing machine can be delivered to a customer only after a water injection test before leaving a factory, and quality problems of the washing machine can be timely fed back and processed in the water injection test process.
Each washing machine is provided with a water filling port threaded connector, and the water filling port threaded connector can be connected to a water faucet through a water pipe in the future use process, so that water of the water faucet can be led into the washing machine. The water injection joint device of the existing washing machine for testing is generally screwed on a water injection port threaded joint manually, and the manual screwing not only has longer operation time and low installation efficiency; and the thread of the screwed joint of the water filling port of the washing machine is easy to scratch, and even the situation of water leakage occurs after connection.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the invention is as follows: the water injection joint device for the test washing machine is high in installation efficiency, good in connection fixing effect and compact in structure.
The invention provides a water injection joint device of a washing machine for testing, which solves the technical problem and adopts the technical scheme that the water injection joint device comprises:
the cylinder body is provided with an installation cavity and an air source inlet;
the piston assembly comprises a water inlet rod and a piston, the water inlet rod penetrates through the installation cavity, and the piston is sleeved on the water inlet rod in a lifting manner and is positioned in the installation cavity; the cylinder body is internally provided with a first air flow channel and a second air flow channel, the first air flow channel is communicated with the air source inlet, the first air flow channel forms a first air outlet communicated with the mounting cavity on the cylinder body, and the first air outlet is positioned above the piston; the second air flow channel forms a second air outlet communicated with the mounting cavity on the cylinder body, and the second air outlet is positioned below the piston; the piston can move up and down in the mounting cavity along the space between the first air outlet and the second air outlet;
the connecting mechanism is arranged in the mounting cavity and comprises a support sleeve and a plurality of threaded grabbing feet arranged along the circumferential direction of the support sleeve, the support sleeve is sleeved on the water inlet rod and is connected with the piston, and when the piston moves from one end close to the second air outlet to one end close to the first air outlet, the plurality of threaded grabbing feet are outwards expanded; when the piston moves from one end close to the first air outlet to one end close to the second air outlet, the plurality of threaded grab legs are inwards closed to each other;
and the control switch is arranged on the cylinder and used for controlling the first air flow channel and the second air flow channel to be mutually communicated or disconnected so as to control the movement direction of the piston.
Further, after an air source is connected to the air source inlet;
when the control switch controls the first air flow channel to be disconnected with the second air flow channel, the air source can drive the piston to move to one end close to the second air outlet, and the plurality of threaded grabbing feet are mutually close;
when the control switch controls the first air flow channel to be communicated with the second air flow channel, the air source can drive the piston to move to one end close to the first air outlet, and the plurality of the thread grabbing feet are all opened outwards.
Further, when the control switch controls the first air flow channel to be communicated with the second air flow channel, the top and the bottom of the piston are both acted by the acting force of the air source, and the top stress area of the piston is smaller than the bottom stress area of the piston.
Furthermore, the control switch has two pins, wherein one pin is disposed in the first air flow channel, the other pin is disposed in the second air flow channel, and the control switch can control the two pins to be turned on or off.
Furthermore, the thread grabbing foot comprises a grabbing head and a mounting part connected with the grabbing head, and threads are arranged on the inner side of the grabbing head;
the top of supporting the cover is equipped with a plurality of breachs along its self circumference, it sets up to grab the head activity in the breach, the installation department is installed on the supporting cover.
Furthermore, the supporting sleeve is provided with an annular groove, the mounting part is provided with a convex block, and the convex blocks on the thread grabbing feet are all detachably mounted in the annular groove.
Further, the connecting mechanism further comprises an elastic ring, a mounting groove is further formed in the thread grabbing foot and located above the protruding block, and the elastic ring is arranged in the mounting grooves of the thread grabbing feet.
Furthermore, the cylinder body comprises a main body and a sleeve connected with the main body, the support sleeve is arranged in the sleeve in a lifting motion manner, and the outer wall of the grasping head movably abuts against the inner wall of the sleeve.
Furthermore, the top of the main body is provided with an internal thread, the circumference of the sleeve is provided with an external thread, the sleeve is provided with a limiting ring above the external thread, the sleeve and the main body are in threaded connection, and the limiting ring is abutted against the main body;
the bottom of the water inlet rod is provided with a thread section, the thread section protrudes out of the mounting cavity and is in threaded connection with a nut, and the water inlet rod is detachably fixed on the main body through the nut.
Further, the supporting sleeve is provided with at least three thread grabbing feet along the circumferential direction;
the piston is provided with at least two sealing ring grooves along the circumferential direction of the piston, and sealing rings are arranged in the sealing rings.
Compared with the prior art, the invention has at least the following beneficial effects:
in the invention, a first air flow channel and a second air flow channel are arranged in a cylinder body, the connection or disconnection of the first air flow channel and the second air flow channel is controlled by a control switch, so that the lifting movement direction of a piston can be controlled, when a water injection joint device is required to be connected to a water injection threaded joint of a washing machine, the first air flow channel and the second air flow channel are controlled to be connected by the control switch, an air source enters from an air source inlet and is discharged from a first air outlet and a second air outlet, because the stress area of the upper part of the piston is smaller than that of the lower part, the piston moves upwards under the push of the air source, the piston drives a threaded grab foot on a support sleeve and a threaded grab foot on the support sleeve to move upwards, in an initial state, the grab head cannot be outwards opened under the abutting of a sleeve, but the piston drives the support sleeve and the threaded grab foot to gradually move upwards under the action of an elastic ring, the grasping head is gradually expanded outwards to be conveniently clamped on a water injection threaded connector of the washing machine (the same spring ring controls three threaded grasping feet simultaneously, the movement synchronism of the threaded grasping feet can be ensured, and the grasping effect is good); when the grasping head is opened to a proper position, the control switch controls the first airflow channel and the second airflow channel to be disconnected, the air source enters from the air source inlet and is discharged from the first air outlet, the air source does not pass through the second airflow channel, the air source pushes the piston to move downwards, and then the support sleeve and the thread grasping feet are driven to move downwards, under the action of the inner wall of the sleeve, the thread grasping feet are enabled to inwards grasp and approach, so that threads on the grasping head are meshed with threads of a water injection joint of the washing machine, the assembly can be completed in the whole process within a few seconds, the mounting efficiency is high, the situation that the threads of the water injection port of the washing machine are scratched due to manual mounting is avoided, the assembly effect is good, the mounting is firm, the structure compactness of the whole device is high, the quality is light, and the dismounting is convenient.
Drawings
FIG. 1 is a schematic view of a water injection joint device of a washing machine for testing according to the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;
FIG. 3 is an exploded view of the whole;
FIG. 4 is a schematic structural view of the cylinder;
FIG. 5 is a schematic plan view of FIG. 4;
FIG. 6 is a cross-sectional view taken along A-A of FIG. 5;
FIG. 7 is a schematic structural view of the main body;
FIG. 8 is a schematic view of a first airflow passage and a second airflow passage in the cylinder;
FIG. 9 is a schematic view of the connection of the first air flow channel, the second air flow channel and the control switch;
FIG. 10 is a schematic view of the piston assembly, the coupling mechanism and the assembly of the sleeve and nut;
FIG. 11 is a schematic half-section view of FIG. 10;
FIG. 12 is a schematic view of the assembly of the water intake rod, support sleeve and threaded grab foot;
FIG. 13 is a schematic view of the assembly of the threaded grab foot and the resilient ring;
FIG. 14 is a plan view of the threaded grab and support sleeve;
fig. 15 is a cross-sectional view taken along line B-B of fig. 14.
In the figure, the position of the upper end of the main shaft,
1. a cylinder body; 10. a main body; 11. a sleeve; 101. a mounting cavity; 102. an air source inlet; 103. a first air flow passage; 104. a second airflow channel; 110. a limiting ring; 12. a first air outlet; 13. a second air outlet;
2. a piston assembly; 20. a water inlet rod; 201. a threaded segment; 21. a piston; 211. a seal ring; 22. a piston sleeve; 23. a plug;
3. a connecting mechanism; 30. a support sleeve; 301. a notch; 302. an annular groove; 310. grasping the head; 31. a threaded grab pin; 311. an installation part; 3111. a bump; 312. mounting grooves; 32. an elastic ring;
4. a control switch; 40. a pin; 41. a switch button; 42. a switch box;
5. and a nut.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1-3, a water filling joint device for a test washing machine comprises a cylinder body 1, a piston assembly 2, a connecting mechanism 3 and a control switch 4. Wherein: the cylinder body 1 is provided with a mounting cavity 101 and an air source inlet 102. Piston assembly 2, including into water pole 20 and piston 21, it wears to establish to advance water pole 20 in the installation cavity 101, specifically, the bottom of advancing water pole 20 is equipped with screw thread section 201, just the screw thread section 201 is protruding to be stretched out installation cavity 101 outer with 5 threaded connection of a nut, it passes through to advance water pole 20 nut 5 detachably fixes on cylinder body 1 (main part 10 promptly), it is fixed to advance water pole 20 and sets up in installation cavity 101 promptly, and it can supply water to pass through, and the top of advancing water pole 20 is equipped with end cap 23, piston 21 liftable ground cover is established advance water pole 20 is last, and is in installation cavity 101. As shown in fig. 4-9, a first air flow passage 103 and a second air flow passage 104 are provided in the cylinder 1, the first air flow passage 103 is communicated with the air supply inlet 102, the first air flow passage 103 forms a first air outlet 12 on the cylinder 1, the first air outlet 12 is communicated with the installation cavity 101, and the first air outlet 12 is located above the piston 21; the second air flow channel 104 forms a second air outlet 13 on the cylinder 1, which is communicated with the installation cavity 101, and the second air outlet 13 is positioned below the piston 21; the piston 21 can move up and down along the space between the first air outlet 12 and the second air outlet 13 in the installation cavity 101; specifically, the first air flow channel 103 includes a vertical sub-channel and two lateral sub-channels communicated with the vertical sub-channel, the upper lateral sub-channel is communicated with the installation cavity 101, the lower lateral sub-channel is close to the second air flow channel 104, so as to facilitate installation of the control switch 4, when the first air flow channel 103 and the second air flow channel 104 are manufactured, a plurality of drilling process holes are left on the cylinder body 1, and can be blocked by plugs, so that air leakage is prevented.
The connecting mechanism 3, which is disposed in the installation cavity 101, includes a supporting sleeve 30 and a plurality of thread gripping feet 31 disposed along the circumferential direction of the supporting sleeve 30, in this embodiment, the supporting sleeve 30 is provided with at least three thread gripping feet 31 along the circumferential direction thereof, which is not limited to only providing three thread gripping feet 31. The supporting sleeve 30 is sleeved on the water inlet rod 20 and connected with the piston 21, and when the piston 21 moves from one end close to the second air outlet 13 to one end close to the first air outlet 12, the plurality of thread grabbing feet 31 are outwards opened so as to conveniently grab a water injection threaded connector of the washing machine; when the piston 21 moves from one end close to the first air outlet 12 to one end close to the second air outlet 13, the plurality of thread grabbing feet 31 are drawn close to each other inwards to ensure that the connection of the water filling port device is stable after the water filling port device is connected to the water filling port thread joint; after the plurality of thread grabbing feet 31 are tightly clamped on the thread joint of the water filling port of the washing machine, the air source is still continuously introduced into the air source inlet 102, so that the grabbing reliability is ensured, and the loosening condition is avoided. The control switch 4 is arranged on the cylinder 1 and used for controlling the first air flow channel 103 and the second air flow channel 104 to be communicated or disconnected with each other so as to control the movement direction of the piston 21, a switch box 42 is arranged on the main body 1, a switch button 41 is arranged on the control switch 4, the switch button 41 is detachably fixed on the main body 1 through the switch box 42, and the control switch 4 is controlled to be turned on or turned off by pressing the switch button 41. Specifically, the control switch 4 has two pins 40, wherein one of the pins 40 is disposed in the first air flow channel 103, and the other pin 40 is disposed in the second air flow channel 104, and the control switch 4 can control the two pins 40 to be connected with each other or disconnected from each other, which can be understood as that when the two pins 40 of the control switch 4 are connected with each other, the first air flow channel 103 and the second air flow channel 104 are connected with each other, and when the two pins 40 of the control switch are disconnected from each other, the first air flow channel 103 and the second air flow channel 104 are disconnected from each other, which is convenient for control.
It should be explained that, after the air source is connected to the air source inlet 102, when the control switch 4 controls the first air flow channel 103 to be disconnected from the second air flow channel 104, the air source can drive the piston 21 to move to the end close to the second air outlet 13, and the plurality of the thread gripping feet 31 are close to each other; when the control switch 4 controls the first air flow passage 103 to communicate with the second air flow passage 104, the air source can drive the piston 21 to move to an end close to the first air outlet 12, and the plurality of the thread gripping feet 31 are all opened outwards. When the first air flow channel 103 and the second air flow channel 104 are communicated with each other, and the same air source is introduced, so that the air pressure at the upper end and the lower end of the piston 21 is equal, which is how to make the piston 21 move from top to bottom, and is a problem to be solved, in this embodiment, when the control switch 4 controls the communication between the first air flow channel 103 and the second air flow channel 104, the top and the bottom (i.e. the upper end and the lower end) of the piston 21 are both acted by the air source, and the top force-receiving area of the piston 21 is smaller than the bottom force-receiving area of the piston 21, i.e. as long as the top force-receiving area of the piston 21 is smaller than the bottom force-receiving area of the piston 21, it is ensured that the piston 21 can smoothly move from top to bottom after the first air flow channel 103 and the second air flow channel 104 are communicated, and in this embodiment, the diameter of the lower portion of the support sleeve 30 is larger than the diameter of the water inlet rod 20, which results in that the support sleeve 30 occupies a large area of the top of the piston 21, the area of the water inlet rod 20 occupied the bottom of the piston 21 is small, in other words, air sources act on the upper end and the lower end of the piston 21, and the force bearing area of the bottom of the piston 21 is larger than that of the top of the piston 21. In this embodiment, the piston 21 is further connected with a piston sleeve 22, the piston 21 is provided with at least two sealing rings 211 along the circumferential direction thereof, and the sealing rings 211 are arranged in the sealing rings 211 to prevent the piston 21 from leaking.
As shown in fig. 10-15, the threaded grab 31 includes a grab head 310 and a mounting portion 311 connected to the grab head 310, the mounting portion 311 is located at the bottom of the grab head 310, and the inner side of the grab head 310 is provided with threads for connecting with a threaded joint of a water inlet of a washing machine and meshing with each other; the top of the supporting sleeve 30 is provided with a plurality of notches 301 along the circumferential direction thereof, the grasping head 310 is movably arranged in the notches 301, the mounting part 311 is mounted on the supporting sleeve 30, the grasping head 310 can penetrate through the notches 301 to be propped against the inner wall of the sleeve 11, and under the limiting action of the sleeve 11, the thread grasping feet 31 are in a mutually furled state, namely after the thread grasping feet 31 are connected to the water injection thread joint of the washing machine, the thread grasping feet 31 are in the furled state. Specifically, an annular groove 302 is formed in the support sleeve 30, a protruding block 3111 is formed in the mounting portion 311, and the protruding blocks 3111 of the plurality of the thread-gripping legs 31 are detachably mounted in the annular groove 302. The engagement of the projection 3111 and the annular groove 302 ensures that the threaded claw 31 cannot move up and down relative to the support sleeve 30. Wherein, coupling mechanism 3 still includes elastic ring 32, and the optimum is the spring ring, still be equipped with a mounting groove 312 on the screw thread grapple 31, just mounting groove 312 is in the top of lug 3111, elastic ring 32 sets up a plurality of in the mounting groove 312 of screw thread grapple 31, through the three screw thread grapple 31 simultaneous movement of same spring ring control, guarantee its synchronism, the motion is reliable, the condition of scratch screw thread also can not appear.
Preferably, the cylinder body 1 includes a main body 10 and a sleeve 11 connected to the main body 10, the main body 10 and the sleeve 11 are separately disposed, the support sleeve 30 is disposed in the sleeve 11 in a lifting manner, the outer wall of the grasping head 310 movably abuts against the inner wall of the sleeve 11, when the support sleeve 30 and the thread grasping foot 31 are accommodated in the sleeve 11, the thread grasping foot 31 cannot be outwardly expanded under the limiting effect of the sleeve 11, and only when the support sleeve 30 and the thread grasping foot 31 extend out of the sleeve 11, the thread grasping feet 31 are outwardly expanded under the effect of the elastic ring 32. Specifically, the top of the main body 10 is provided with an internal thread, the circumference of the sleeve 11 is provided with an external thread, the sleeve 11 is provided with a limiting ring 110 above the external thread, the sleeve 11 is in threaded connection with the main body 10, the limiting ring 110 abuts against the main body 10, the limiting ring 110 can prevent the sleeve 11 from being installed too deep in the main body 10, and the limiting ring 110 is provided with a plurality of bayonets for a screwing tool to be clamped in, so that the sleeve 11 can be conveniently disassembled, when the washing machine water filling port device needs to be integrally disassembled, the switch box 42 can be disassembled from the main body 10, and then the switch button 41 and the control switch 4 can be disassembled; can pull down nut 5 and pull down the sleeve from main part 10, and then can get rid of piston assembly 2, water inlet rod 20 and coupling mechanism 3 whole, the dismouting is simple, and compact structure.
In the working process, a first air flow passage 103 and a second air flow passage 104 are arranged in the cylinder body 1, the connection or disconnection of the first air flow passage 103 and the second air flow passage 104 is controlled by a control switch 4, so that the direction of the lifting movement of the piston 21 can be controlled, when the water injection joint device is required to be connected to a water injection threaded joint of a washing machine, the first air flow passage 103 and the second air flow passage 104 are controlled to be connected by the control switch 4, air source enters from an air source inlet 102 and is discharged from a first air outlet 12 and a second air outlet 13, because the upper stress area of the piston 21 is smaller than the lower stress area, the piston 21 moves upwards under the push of the air source, the piston 21 drives the support sleeve 30 and the threaded grab 31 on the support sleeve 30 to move upwards, in the initial state, the grab head 310 is under the abutting top of the sleeve 11 and cannot be opened outwards, but the support sleeve 30 and the threaded grab 31 are gradually moved upwards as the piston 21 drives the support sleeve 30 and the threaded grab 31, under the action of the elastic ring 32, the gripping head 310 is gradually expanded outwards so as to be conveniently clamped on a water injection threaded connector of the washing machine (the same elastic ring controls three threaded gripping feet 31 at the same time, so that the movement synchronism of the threaded gripping feet 31 can be ensured, and the gripping effect is good); when the holding head 310 is opened to a proper position, the control switch 4 controls the first airflow channel 103 and the second airflow channel 104 to be disconnected, the air source enters from the air source inlet 102 and is discharged from the first air outlet 12, the air source does not pass through the second airflow channel 104, the air source pushes the piston 21 to move downwards, and then the support sleeve 30 and the threaded holding feet 31 are driven to move downwards, under the action of the inner wall of the sleeve 11, the threaded holding feet 31 are enabled to be held inwards and drawn close, and further threads on the holding head 310 are meshed with threads of a water injection joint of the washing machine, the whole process can be assembled within a few seconds, the assembly efficiency is high, the situation that the threaded joint of the water injection port of the washing machine is scratched due to manual installation is avoided, the assembly effect is good, the installation is firm, the structure compactness of the whole device is high, the weight is light, and the disassembly and assembly are convenient.
In this scheme, this washing machine water injection piecing devices's compact structure, light in weight, the installation effectiveness is high, and connects fixed convenience, effectual.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A water injection joint device of a washing machine for testing is characterized by comprising:
the cylinder body is provided with an installation cavity and an air source inlet;
the piston assembly comprises a water inlet rod and a piston, the water inlet rod penetrates through the installation cavity, and the piston is sleeved on the water inlet rod in a lifting manner and is positioned in the installation cavity; the cylinder body is internally provided with a first air flow channel and a second air flow channel, the first air flow channel is communicated with the air source inlet, the first air flow channel forms a first air outlet communicated with the mounting cavity on the cylinder body, and the first air outlet is positioned above the piston; the second air flow channel forms a second air outlet communicated with the mounting cavity on the cylinder body, and the second air outlet is positioned below the piston; the piston can move up and down in the mounting cavity along the space between the first air outlet and the second air outlet;
the connecting mechanism is arranged in the mounting cavity and comprises a support sleeve and a plurality of threaded grabbing feet arranged along the circumferential direction of the support sleeve, the support sleeve is sleeved on the water inlet rod and is connected with the piston, and when the piston moves from one end close to the second air outlet to one end close to the first air outlet, the plurality of threaded grabbing feet are outwards expanded; when the piston moves from one end close to the first air outlet to one end close to the second air outlet, the plurality of threaded grab legs are inwards closed to each other;
and the control switch is arranged on the cylinder and used for controlling the first air flow channel and the second air flow channel to be mutually communicated or disconnected so as to control the movement direction of the piston.
2. The water filling joint device for the test washing machine as claimed in claim 1, wherein after the air source is connected to the air source inlet;
when the control switch controls the first air flow channel to be disconnected with the second air flow channel, the air source can drive the piston to move to one end close to the second air outlet, and the plurality of threaded grabbing feet are mutually close;
when the control switch controls the first air flow channel to be communicated with the second air flow channel, the air source can drive the piston to move to one end close to the first air outlet, and the plurality of the thread grabbing feet are all opened outwards.
3. The water filling joint device of a test washing machine as claimed in claim 2, wherein when the control switch controls the first air flow passage to communicate with the second air flow passage, the top and bottom of the piston are both acted by the air source, and the top force-bearing area of the piston is smaller than the bottom force-bearing area of the piston.
4. The device as claimed in any one of claims 1 to 3, wherein the control switch has two pins, one of the two pins is disposed in the first air flow channel, the other pin is disposed in the second air flow channel, and the control switch controls the two pins to be turned on or off.
5. The water filling connector device for the test washing machine as claimed in claim 1, wherein the screw thread gripper comprises a gripper head and a mounting part connected with the gripper head, and the inner side of the gripper head is provided with screw threads;
the top of supporting the cover is equipped with a plurality of breachs along its self circumference, it sets up to grab the head activity in the breach, the installation department is installed on the supporting cover.
6. The water filling joint device for the test washing machine as claimed in claim 5, wherein the supporting sleeve has an annular groove, the mounting portion has a protrusion, and the protrusions of the plurality of the screw-thread grippers are detachably mounted in the annular groove.
7. The water injection joint device for the test washing machine as claimed in claim 6, wherein the connection mechanism further comprises an elastic ring, the screw thread grab is further provided with an installation groove above the protrusion, and the elastic ring is disposed in the installation grooves of the plurality of screw thread grab.
8. The water injection joint device for the test washing machine as claimed in claim 5, 6 or 7, wherein the cylinder body comprises a main body and a sleeve connected with the main body, the support sleeve is movably disposed in the sleeve, and the outer wall of the grip head movably abuts against the inner wall of the sleeve.
9. The water injection joint device for the test washing machine as claimed in claim 8, wherein the top of the main body is provided with internal threads, the sleeve is circumferentially provided with external threads, the sleeve is provided with a limit ring above the external threads, the sleeve and the main body are in threaded connection, and the limit ring abuts against the main body;
the bottom of the water inlet rod is provided with a thread section, the thread section protrudes out of the mounting cavity and is in threaded connection with a nut, and the water inlet rod is detachably fixed on the main body through the nut.
10. The water filling joint device for the test washing machine as claimed in claim 1, wherein the support sleeve is provided with at least three screw thread grippers along a circumferential direction thereof;
the piston is provided with at least two sealing ring grooves along the circumferential direction of the piston, and sealing rings are arranged in the sealing rings.
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| CN202111374636.9A CN114233961B (en) | 2021-11-19 | 2021-11-19 | Water injection joint device of washing machine for testing |
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| CN202111374636.9A CN114233961B (en) | 2021-11-19 | 2021-11-19 | Water injection joint device of washing machine for testing |
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| CN114233961B CN114233961B (en) | 2024-01-16 |
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| CN114233961B (en) | 2024-01-16 |
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