latch device

Abstract

The utility model relates to the technical field of car washer, especially relates to a lock catch device for connecting liquid adding pipe and kettle, the end part of liquid adding pipe is close to the kettle and is provided with a clamping groove, the kettle has a connecting port, the connecting port is installed with a clamping block, the end part of liquid adding pipe is close to the kettle and is further installed with a guide group, the end part of connecting port is close to liquid adding pipe and is provided with a guide groove, the guide group and clamping groove are staggered in the circumference, the utility model provides a lock catch device with simple structure design, has the function of guiding, and effectively avoids the circumferential deflection of liquid adding pipe on the kettle.

Description

Technical Field

[0001] This utility model relates to the field of car wash technology, and in particular to a locking device. Background Technology

[0002] Car washers are primarily used to remove dirt and grime from windshields, ensuring good visibility for the driver and passengers. A car washer consists of a refrigerant hose and a water tank, which are typically designed as a single unit.

[0003] The integrated design of the filling tube and water bottle places high demands on the processing molds, and maintenance and replacement require a complete overhaul, resulting in high costs. To overcome the shortcomings of the integrated design, existing filling tubes and water bottles employ a separate design. For example, utility model patent (CN203472812U) discloses a car washer, including a washing tank and a filling tube. The washing tank has an installation port, and the filling tube and the installation port are connected by a slot and a protrusion. However, in the aforementioned patent, the protrusion is located deep within the installation port, making it difficult to observe. This can lead to inaccurate alignment between the protrusion and the slot during the insertion of the filling tube, requiring multiple adjustments and affecting installation efficiency. Furthermore, while the slot and protrusion prevent axial movement of the filling tube on the washing tank, circumferential deflection still exists, potentially causing the protrusion to detach from the slot. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a locking device with a simple structural design, a guiding function, and effective prevention of circumferential deflection of the liquid filling tube on the kettle.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a locking device for connecting a liquid filling tube and a kettle. The end of the liquid filling tube near the kettle is provided with a slot. The kettle has a connection port. A locking block is installed in the connection port. A guide group is also installed at the end of the liquid filling tube near the kettle. A guide groove is provided at the end of the connection port near the liquid filling tube. The guide group and the slot are offset in the circumferential direction.

[0006] Furthermore, the guide assembly includes a guide member and a first elastic member. The guide member is slidably installed in a first groove in the liquid filling pipe and protrudes from the first groove. The first elastic member is disposed in the first groove, with one end of the first elastic member abutting against the guide member and the other end of the first elastic member abutting against the bottom of the first groove.

[0007] Furthermore, the end of the guide member away from the first elastic member is spherical.

[0008] Furthermore, the portion of the bottom of the guide groove away from the liquid filling pipe is arc-shaped.

[0009] Furthermore, the slot includes an entry section and a latching section, wherein the end of the entry section away from the kettle is connected to the latching section.

[0010] Furthermore, a cap is installed at the end of the liquid filling tube away from the kettle.

[0011] Furthermore, an annular groove is provided in the middle of the liquid addition tube, and a sealing ring is embedded in the annular groove.

[0012] Furthermore, a positioning group is provided in the middle of the liquid addition tube, and the positioning group is offset from the guide group in the circumferential direction.

[0013] Furthermore, the positioning assembly includes a positioning member and a second elastic member. The positioning member is slidably installed in the second groove of the liquid filling pipe and protrudes from the second groove. The second elastic member is disposed in the second groove, with one end of the second elastic member abutting against the positioning member and the other end of the second elastic member abutting against the bottom of the second groove.

[0014] Furthermore, the bottom side of the positioning member away from the second elastic member is arc-shaped.

[0015] The beneficial effects of this utility model are:

[0016] (1) By setting up the guide group and guide groove, this utility model can accurately guide the card block into the card groove in one go during the process of inserting the liquid filling pipe into the connection port, without the need for multiple adjustments, which significantly improves the installation efficiency.

[0017] (2) By setting up a positioning group, the positioning group enters the guide groove when the card block enters the buckling section of the card slot, thereby achieving circumferential positioning and effectively preventing the liquid filling tube from deflecting circumferentially on the water bottle. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the liquid addition tube in this utility model;

[0021] Figure 3 This is a schematic diagram of the kettle in this utility model;

[0022] Figure 4 This is a schematic diagram of the guide groove in this utility model;

[0023] Figure 5 This is a cross-sectional view of the guide assembly in this utility model;

[0024] Figure 6 This is a cross-sectional view of the positioning assembly in this utility model.

[0025] In the diagram: 100, filling pipe; 110, slot; 111, entry section; 112, snap-fit ​​section; 120, first groove; 130, annular groove; 140, second groove; 200, kettle; 210, connection port; 211, guide groove; 300, locking block; 400, guide assembly; 410, guide component; 420, first elastic component; 500, pipe cap; 600, positioning assembly; 610, positioning component; 620, second elastic component. Detailed Implementation

[0026] The present invention will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] Example 1

[0028] like Figures 1-4 As shown, a locking device is used to connect a filling tube 100 to a water bottle 200. A groove 110 is provided at the end of the filling tube 100 near the water bottle 200. The water bottle 200 has a connection port 210, and a locking block 300 is installed inside the connection port 210. A guide assembly 400 is also installed at the end of the filling tube 100 near the water bottle 200. A guide groove 211 is provided at the end of the connection port 210 near the filling tube 100. The guide assembly 400 and the groove 110 are circumferentially offset. Specifically, the groove 110 includes an entry section 111 and a locking section 112. The end of the entry section 111 away from the water bottle 200 communicates with the locking section 112. The bottom of the guide groove 211, away from the filling tube 100, is arc-shaped. A tube cap 500 is installed at the end of the filling tube 100 away from the water bottle 200.

[0029] With the guide group 400 and guide groove 211, the card block 300 is precisely guided into the card groove 110 in one go during the process of inserting the liquid filling tube 100 into the connection port 210, without the need for multiple adjustments, which significantly improves the installation efficiency.

[0030] like Figure 2 and Figure 5 As shown, the guide assembly 400 includes a guide member 410 and a first elastic member 420. The guide member 410 is slidably installed within a first groove 120 in the liquid filling pipe 100, and protrudes from the first groove 120. The first elastic member 420 is disposed within the first groove 120, with one end abutting against the guide member 410 and the other end abutting against the bottom of the first groove 120. Specifically, the end of the guide member 410 away from the first elastic member 420 is spherical; the first elastic member 420 is a spring.

[0031] During the insertion of the liquid filling tube 100 into the connector 210, the guide assembly 400 is axially aligned with the guide groove 211, and the locking block 300 is axially aligned with the locking groove 110. As the liquid filling tube 100 is inserted, the guide member 410 abuts against the bottom of the guide groove 211, compressing the first elastic member 420 until the locking block 300 is fully inserted into the entry section 111 of the locking groove 110. At this time, the guide member 410 passes through the guide groove 211 and abuts against the inner wall of the connector 210. The guide member 410 retracts into the first groove 120. The liquid filling tube 100 is rotated until the locking block 300 enters the locking section 112 of the locking groove 110.

[0032] like Figure 2 As shown, an annular groove 130 is formed in the middle of the liquid filling tube 100, and a sealing ring is embedded in the annular groove 130. Specifically, the annular groove 130 is located above the guide assembly 400. When the liquid filling tube 100 and the water bottle 200 are installed, the sealing ring abuts against the inner wall of the connection port 210 to ensure a tight seal.

[0033] During installation, align the guide assembly 400 axially with the guide groove 211, insert the liquid filling pipe 100 into the connection port 210, at which point the locking block 300 directly enters the entry section 111 of the locking groove 110, and the guide 410 retracts into the first groove 120; rotate the liquid filling pipe 100 until the locking block 300 enters the locking section 112 of the locking groove 110.

[0034] Example 2

[0035] like Figure 1 and Figure 2 As shown, this embodiment adds a positioning group 600 based on embodiment 1. The positioning group 600 is located in the middle of the liquid filling pipe 100, and the positioning group 600 is offset from the guide group 400 in the circumferential direction. Specifically, the positioning group 600 is located above the annular groove 130.

[0036] By setting the positioning group 600, when the card block 300 enters the snap-fit ​​section 112 of the card slot 110, the positioning group 600 enters the guide groove 211 to achieve circumferential positioning, effectively preventing the liquid filling tube 100 from circumferentially deflecting on the water bottle 200.

[0037] like Figure 2 and Figure 6As shown, the positioning assembly 600 includes a positioning member 610 and a second elastic member 620. The positioning member 610 is slidably installed in the second groove 140 opened in the liquid filling pipe 100, and the positioning member 610 protrudes from the second groove 140. The second elastic member 620 is disposed in the second groove 140, with one end of the second elastic member 620 abutting against the positioning member 610 and the other end of the second elastic member 620 abutting against the bottom of the groove 140. Specifically, the bottom side of the positioning member 610 away from the second elastic member 620 is arc-shaped; the second elastic member 620 is a spring.

[0038] During the insertion of the filling tube 100 into the connector 210, the arc-shaped side of the positioning member 610 first abuts against the inner wall of the connector 210, compressing the first elastic member 420. As the filling tube 100 is inserted, the positioning member 610 retracts into the second groove 140 until the locking block 300 is fully inserted into the entry section 111 of the slot 110. The filling tube 100 is rotated until the locking block 300 enters the locking section 112 of the slot 110. At this time, the positioning member 610 enters the guide groove 211 under the action of the second elastic member 620. It should be noted that after the filling tube 100 is connected to the kettle 200, part of the positioning member 610 protrudes from the connector 210. When the filling tube 100 and the kettle 200 need to be separated, the positioning member 610 is pressed back into the second groove 140, and the filling tube 100 is rotated in the opposite direction.

[0039] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A locking device for connecting a filling tube (100) and a kettle (200), wherein the filling tube (100) has a slot (110) at its end near the kettle (200), the kettle (200) has a connection port (210), and a locking block (300) is installed in the connection port (210), characterized in that: The end of the liquid filling tube (100) near the water bottle (200) is also equipped with a guide assembly (400), and the end of the connection port (210) near the liquid filling tube (100) is provided with a guide groove (211). The guide assembly (400) and the slot (110) are offset in the circumferential direction.

2. The locking device according to claim 1, characterized in that: The guide assembly (400) includes a guide member (410) and a first elastic member (420). The guide member (410) is slidably installed in a first groove (120) opened in the liquid filling pipe (100), and the guide member (410) protrudes from the first groove (120). The first elastic member (420) is disposed in the first groove (120). One end of the first elastic member (420) abuts against the guide member (410), and the other end of the first elastic member (420) abuts against the bottom of the first groove (120).

3. The locking device according to claim 2, characterized in that: The end of the guide member (410) away from the first elastic member (420) is spherical.

4. The locking device according to claim 1, characterized in that: The bottom of the guide groove (211) is arc-shaped, away from the liquid filling pipe (100).

5. The locking device according to claim 1, characterized in that: The slot (110) includes an entry section (111) and a snap-fit ​​section (112), wherein the end of the entry section (111) away from the kettle (200) is connected to the snap-fit ​​section (112).

6. The locking device according to claim 1, characterized in that: The end of the liquid filling tube (100) away from the water bottle (200) is fitted with a tube cap (500).

7. The locking device according to claim 1, characterized in that: The liquid filling tube (100) has an annular groove (130) in the middle, and a sealing ring is embedded in the annular groove (130).

8. The locking device according to claim 1, characterized in that: The liquid filling tube (100) is provided with a positioning group (600) in the middle, and the positioning group (600) is offset from the guide group (400) in the circumferential direction.

9. The locking device according to claim 8, characterized in that: The positioning assembly (600) includes a positioning element (610) and a second elastic element (620). The positioning element (610) is slidably installed in a second groove (140) opened in the liquid filling pipe (100), and the positioning element (610) protrudes from the second groove (140). The second elastic element (620) is disposed in the second groove (140), one end of the second elastic element (620) abuts against the positioning element (610), and the other end of the second elastic element (620) abuts against the bottom of the second groove (140).

10. The locking device according to claim 9, characterized in that: The bottom side of the positioning member (610) away from the second elastic member (620) is arc-shaped.

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