Rotary grip type water adding joint

Abstract

The utility model relates to a kind of rotary clamping type water adding connector, comprising: inner tube, including inner cylindrical part, and with the inner cylindrical part fixed inner taper part, gradually increase in the direction away from the outer diameter of the inner cylindrical part of the inner taper part;Outer tube, rotationally set in the outer tube, the outer tube includes outer cylindrical part, the inner diameter of the outer cylindrical part is same with the outer diameter of the inner cylindrical part, the inner diameter of the outer cylindrical part is less than the outer diameter of the inner taper part;First cam, fixedly set in inner cylindrical part outer, and have first inclined surface;Second cam, fixed in the outer cylindrical part, and have second inclined surface, the first inclined surface can be with the second inclined surface abut, rotary clamping type water adding connector can be connected with different size of passenger car water injection port, and enhance the friction between inner taper part and passenger car water injection port, to prevent water adding connector from passenger car water injection port drop-off.

Description

Technical Field

[0001] This utility model relates to the field of water connector equipment, and in particular to a rotary clamping water connector. Background Technology

[0002] Water inlet connectors are common connecting devices used to connect to the water inlets of buses. Since different buses may have different water inlet sizes, existing water inlet connectors cannot connect to water inlets of different sizes. Therefore, multiple water inlet connectors of different specifications need to be installed, which is inconvenient and costly. In addition, the connection strength between existing water inlet connectors and bus water inlets is low, which can easily lead to the water pipe coming off. Utility Model Content

[0003] The purpose of this utility model is to provide a rotary clamping water supply connector, which has the characteristics of stable installation and good applicability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A rotary clamping water connector includes: an inner tube, comprising an inner cylindrical portion and an inner conical portion fixed to the inner cylindrical portion, wherein the outer diameter of the inner conical portion gradually increases in a direction away from the inner cylindrical portion;

[0006] An outer tube is rotatably sleeved outside the inner tube. The outer tube includes an outer cylindrical portion, the inner diameter of which is the same as the outer diameter of which is smaller than the outer diameter of which is smaller.

[0007] The first cam is fixedly sleeved on the outside of the inner cylindrical part and has a first inclined surface;

[0008] The second cam is fixed inside the outer cylindrical portion and has a second inclined surface, wherein the first inclined surface can abut against the second inclined surface.

[0009] Preferably, the first inclined surface and the second inclined surface are both set at an angle to the axial direction of the inner tube, and the first inclined surface and the second inclined surface are both set at an angle to the radial direction of the inner tube.

[0010] Preferably, the first cam and the second cam are coaxially arranged. The first cam has a groove and the first inclined surface is located in the groove. The second cam has a protrusion and the second inclined surface is located in the protrusion. The protrusion can be inserted into the groove so that the first inclined surface abuts against the second inclined surface.

[0011] Preferably, the groove further has a first stop surface, and the protrusion further has a second stop surface. Both the first stop surface and the second stop surface are parallel to the axial direction of the inner tube, and the first stop surface and the second stop surface abut against each other to restrict the rotation of the outer tube.

[0012] Preferably, the outer surface of the inner cylindrical portion is provided with a support seat, the inner surface of the outer cylindrical portion is provided with a support platform, the first cam and the second cam are located between the support seat and the support platform, and the first cam abuts against the support seat and the second cam abuts against the support platform.

[0013] Preferably, the outer tube further includes an outer conical portion fixed to the outer cylindrical portion, the outer conical portion being sleeved outside the inner conical portion; the inner diameter of the outer conical portion gradually increases in the direction away from the outer cylindrical portion.

[0014] Preferably, along the axial direction of the inner tube, the inner surface of the inner cone is provided with a plurality of friction strips at intervals.

[0015] Preferably, the inner cylindrical portion has an interface portion at the end away from the inner conical portion, and the interface portion is located on the outside of the outer tube.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The rotary clamping water connector provided in the above technical solution has a conical installation space in the inner conical part, which can be connected to the water inlet of buses of different sizes, thereby enhancing its practicality. Since the first inclined surface abuts against the second inclined surface, the second inclined surface can move along the first inclined surface when the outer tube is rotated, so that the outer tube can move axially while rotating. Since the inner diameter of the outer cylindrical part is smaller than the outer diameter of the inner conical part, the outer cylindrical part can force the inner conical part to deform inward, thereby increasing the friction between the inner conical part and the water inlet of the bus, thus preventing the water connector from falling off the water inlet of the bus. Attached Figure Description

[0018] Figure 1 A schematic diagram of the rotary clamping water inlet connector provided in an embodiment of this utility model;

[0019] Figure 2 A cross-sectional view of the rotary clamping water inlet connector provided in an embodiment of this utility model;

[0020] Figure 3 A schematic diagram of the inner tube provided in an embodiment of this utility model;

[0021] Figure 4 A schematic diagram of the outer tube provided in an embodiment of this utility model;

[0022] Figure 5An exploded view of the first cam and the second cam provided for an embodiment of this utility model.

[0023] 1. Inner tube; 11. Inner cylindrical part; 12. Inner conical part; 13. Support seat; 14. Friction strip; 15. Interface part; 2. Outer tube; 21. Outer cylindrical part; 22. Outer conical part; 23. Support platform; 3. First cam; 31. First inclined surface; 32. Groove; 33. First stop surface; 4. Second cam; 41. Second inclined surface; 42. Protrusion; 43. Second stop surface. Detailed Implementation

[0024] The present invention will now be described in more detail with reference to the accompanying drawings. It should be noted that the description of the present invention with reference to the accompanying drawings is merely illustrative and not restrictive. Various embodiments can be combined with each other to form other embodiments not shown in the following description.

[0025] Please see Figures 1 to 5 The rotary clamping water connector provided by this utility model includes an inner pipe 1, an outer pipe 2, a first cam 3, and a second cam 4.

[0026] Specifically, the inner tube 1 includes an inner cylindrical portion 11 and an inner conical portion 12 fixed to the inner cylindrical portion 11. The outer diameter of the inner conical portion 12 gradually increases in the direction away from the inner cylindrical portion 11. The outer tube 2 is rotatably sleeved outside the inner tube 1. The outer tube 2 includes an outer cylindrical portion 21. The inner diameter of the outer cylindrical portion 21 is the same as the outer diameter of the inner cylindrical portion 11. The inner diameter of the outer cylindrical portion 21 is smaller than the outer diameter of the inner conical portion 12. The first cam 3 is fixedly sleeved outside the inner cylindrical portion 11 and has a first inclined surface 31. The second cam 4 is fixed inside the outer cylindrical portion 21 and has a second inclined surface 41. The first inclined surface 31 can abut against the second inclined surface 41.

[0027] The rotary clamping water connector provided in this embodiment has a conical installation space in the inner conical part 12, which can be connected to the water inlet of buses of different sizes, thereby enhancing its practicality. Since the first inclined surface 31 abuts against the second inclined surface 41, the second inclined surface 41 can move along the first inclined surface 31 when the outer tube 2 is rotated, so that the outer tube 2 can move axially while rotating. Since the inner diameter of the outer cylindrical part 21 is smaller than the outer diameter of the inner conical part 12, the outer cylindrical part 21 can force the inner conical part 12 to deform inward, thereby increasing the friction between the inner conical part 12 and the water inlet of the bus, thus preventing the water connector from falling off the water inlet of the bus.

[0028] It is conceivable that the inner cylindrical portion 11 and the inner conical portion 12 are integrally formed. The inner cylindrical portion 11 is cylindrical, therefore the axial direction of the inner cylindrical portion 11 is defined as the axial direction of the inner tube 1, and the diametrical direction of the inner cylindrical portion 11 is defined as the radial direction. Furthermore, the inner tube 1 and the outer tube 2 can be coaxially arranged. The inner cylindrical portion 11 has a cylindrical space, and the inner conical portion 12 has a conical space; the two spaces are connected and used for water flow.

[0029] Both the first inclined surface 31 and the second inclined surface 41 are set at an angle to the axial direction of the inner tube 1, and both are set at an angle to the radial direction of the inner tube 1. This angled arrangement of the first inclined surface 31 and the second inclined surface 41 allows the outer tube 2 to move axially relative to the inner tube 1 when the outer tube 2 rotates, ultimately forcing the inner conical portion 12 to deform inwards. This increases the friction between the inner conical portion 12 and the bus water inlet, thus preventing the water inlet connector from detaching from the bus water inlet.

[0030] It is important to understand that after the water pipe is inserted into the inner tube 1, the inner tube 1 needs to remain stationary. The first cam 3 is fixed to the inner tube 1, so the first cam 3 also remains stationary. The second cam 4 is fixed to the outer tube 2, so when the outer tube 2 rotates, the second cam 4 rotates along with the outer tube 2, thereby allowing the second inclined plane 41 to move along the first inclined plane 31 and realize the axial movement of the outer tube 2 relative to the inner tube 1.

[0031] The first cam 3 and the second cam 4 are coaxially arranged. The first cam 3 is provided with a groove 32 and a first inclined surface 31 is located in the groove 32. The second cam 4 is provided with a protrusion 42 and a second inclined surface 41 is located in the protrusion 42. The protrusion 42 can be inserted into the groove 32 so that the first inclined surface 31 abuts against the second inclined surface 41.

[0032] To restrict the rotation of the outer tube 2, the groove 32 also has a first stop surface 33, and the protrusion 42 also has a second stop surface 43. The first stop surface 33 and the second stop surface 43 are both parallel to the axial direction of the inner tube 1, and the rotation of the outer tube 2 can be restricted by the contact between the first stop surface 33 and the second stop surface 43.

[0033] To facilitate the installation and fixation of the first cam 3 and the second cam 4, a support seat 13 is provided on the outer surface of the inner cylindrical part 11, and a support platform 23 is provided on the inner surface of the outer cylindrical part 21. The first cam 3 and the second cam 4 are located between the support seat 13 and the support platform 23, and the first cam 3 abuts against the support seat 13 and the second cam 4 abuts against the support platform 23.

[0034] It is conceivable that the support base 13 and the support platform 23 are spaced apart along the axial direction, and the support base 13 and the support platform 23 have installation space, within which the first cam 3 and the second cam 4 can be located. Specifically, the support base 13 is an annular protrusion, and the bottom surface of the first cam 3 can abut against the support base 13, thereby restricting the axial movement of the first cam 3; the support platform 23 is an annular step, and the top surface of the second cam 4 can abut against the support platform 23, so that the second cam 4 can drive the outer tube 2 to move axially through the support platform 23.

[0035] The outer tube 2 also includes an outer conical portion 22 fixed to the outer cylindrical portion 21, and the outer conical portion 22 is sleeved outside the inner conical portion 12; the inner diameter of the outer conical portion 22 gradually increases in the direction away from the outer cylindrical portion 21.

[0036] Crucially, the outer conical portion 22 can be integrally formed with the outer cylindrical portion 21, and the outer conical portion 22 can be rotatably fitted over the inner conical portion 12. Specifically, the outer conical portion 22 has a conical inner surface, which can abut against the outer surface of the inner conical portion 12 when the outer tube 2 is not rotating. When the outer tube 2 rotates and moves axially, the inner surface of the outer conical portion 22 will also press against the inner conical portion 12, thereby causing the inner conical portion 12 to deform inward, increasing the friction between the inner conical portion 12 and the bus water inlet, thus preventing the water inlet connector from falling off the bus water inlet.

[0037] It is conceivable that the inner tube 1 can be made of a deformable material, and the hardness of the outer tube 2 needs to be greater than that of the inner tube 1, so as to facilitate the deformation of the inner tube 1.

[0038] To further enhance the friction between the inner cone 12 and the bus water inlet, a plurality of friction strips 14 are provided at intervals on the inner surface of the inner cone 12 along the axial direction of the inner tube 1. The friction strips 14 can be annular and protrude from the inner surface of the inner cone 12. The deformed friction strips 14 can abut more tightly with the bus water inlet, thereby enhancing the friction between the inner cone 12 and the bus water inlet.

[0039] The inner cylindrical portion 11 has an interface portion 15 at the end away from the inner conical portion 12, and the interface portion 15 is located outside the outer tube 2. The interface portion 15 can be connected to another water pipe, thereby connecting the two water pipes and realizing water flow.

[0040] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A rotary clamping water inlet connector, characterized in that, include: The inner tube (1) includes an inner cylindrical portion (11) and an inner conical portion (12) fixed to the inner cylindrical portion (11). The outer diameter of the inner conical portion (12) gradually increases in a direction away from the inner cylindrical portion (11). The outer tube (2) is rotatably sleeved outside the inner tube (1). The outer tube (2) includes an outer cylindrical part (21). The inner diameter of the outer cylindrical part (21) is the same as the outer diameter of the inner cylindrical part (11). The inner diameter of the outer cylindrical part (21) is smaller than the outer diameter of the inner conical part (12). The first cam (3) is fixedly sleeved outside the inner cylindrical part (11) and has a first inclined surface (31); The second cam (4) is fixed inside the outer cylindrical part (21) and has a second inclined surface (41), wherein the first inclined surface (31) can abut against the second inclined surface (41).

2. The rotary clamping water inlet connector as described in claim 1, characterized in that, The first inclined surface (31) and the second inclined surface (41) are both set at an angle to the axial direction of the inner tube (1), and the first inclined surface (31) and the second inclined surface (41) are both set at an angle to the radial direction of the inner tube (1).

3. The rotary clamping water inlet connector as described in claim 1, characterized in that, The first cam (3) and the second cam (4) are coaxially arranged. The first cam (3) is provided with a groove (32) and the first inclined surface (31) is located in the groove (32). The second cam (4) is provided with a protrusion (42) and the second inclined surface (41) is located in the protrusion (42). The protrusion (42) can be inserted into the groove (32) so that the first inclined surface (31) and the second inclined surface (41) abut against each other.

4. The rotary clamping water inlet connector as described in claim 3, characterized in that, The groove (32) also has a first stop surface (33), and the protrusion (42) also has a second stop surface (43). The first stop surface (33) and the second stop surface (43) are both parallel to the axial direction of the inner tube (1), and the first stop surface (33) and the second stop surface (43) abut against each other to restrict the rotation of the outer tube (2).

5. The rotary clamping water inlet connector as described in claim 1, characterized in that, The outer surface of the inner cylindrical part (11) is provided with a support seat (13), and the inner surface of the outer cylindrical part (21) is provided with a support platform (23). The first cam (3) and the second cam (4) are located between the support seat (13) and the support platform (23), and the first cam (3) abuts against the support seat (13), and the second cam (4) abuts against the support platform (23).

6. The rotary clamping water inlet connector as described in claim 1, characterized in that, The outer tube (2) also includes an outer conical part (22) fixed to the outer cylindrical part (21), the outer conical part (22) being sleeved outside the inner conical part (12); the inner diameter of the outer conical part (22) gradually increases in the direction away from the outer cylindrical part (21).

7. The rotary clamping water inlet connector as described in claim 1, characterized in that, Along the axial direction of the inner tube (1), a plurality of friction strips (14) are provided at intervals on the inner surface of the inner cone (12).

8. The rotary clamping water inlet connector as described in claim 1, characterized in that, The inner cylindrical portion (11) has an interface portion (15) at one end away from the inner conical portion (12), and the interface portion (15) is located outside the outer tube (2).

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