Elastic check ring assembly tool for valve assembly shaft

Abstract

The utility model discloses an assembling tool for an elastic check ring for a valve assembly shaft, and belongs to the technical field of valve assembling. The tool comprises a valve element supporting seat and a press-fit head, the press-fit head is cylindrical and located over the valve element supporting seat, the press-fit head comprises a press-fit head body and a boss coaxially arranged at the lower end of the press-fit head body, a check ring positioning groove is coaxially formed in the lower end of the boss, and a limiting blind hole is coaxially formed in the bottom of the check ring positioning groove. The valve body and the valve element are supported through the valve element supporting seat, and the lower end of the valve element is axially positioned. Then the elastic check ring is placed in a check ring positioning groove in the lower end of the press-fit head, and the spring seat is pressed downwards through the press-fit head to enable the spring to contract till the elastic check ring is pressed into a clamping spring groove in the valve element; by means of the tool, one worker can quickly complete press fitting work of the elastic check ring, the assembling efficiency of a valve assembly is remarkably improved, the production cost of a valve is reduced, and assembling of the elastic check ring can be conveniently achieved in a limited operation space.

Description

Technical Field

[0001] The utility model relates to an assembly tool for an elastic circlip for a valve component shaft, belonging to the technical field of valve assembly. Background Art

[0002] As Figure 1 and Figure 2 shown, the valve component 1 includes a valve body 15, a valve core 14, a spring 13, a spring seat 12 and an elastic circlip 11, and the valve component 1 is widely used in products such as solenoid valves and solar valves. Before the elastic circlip 11 is assembled onto the valve core 14, the structure of the valve component is as Figure 1 shown; after the elastic circlip 11 is assembled onto the valve core 14, the structure of the valve component is as Figure 2 shown. During the assembly process of the elastic circlip 11, it is necessary to overcome the elastic force of the spring 13 and the tension of the elastic circlip 11 at the same time to assemble the elastic circlip 11 onto the valve core 14.

[0003] When the elastic force of the spring 13 is large, it is necessary for two workers to cooperate to achieve the assembly of the elastic circlip 11. Specifically, one worker presses down the spring seat 12 and the spring 13 to expose the circlip groove on the valve core 14, and the other worker holds a circlip pliers to install the elastic circlip 11 onto the valve core 14. The assembly efficiency is low and it will increase the production cost of the valve. In addition, due to the limited assembly space, the assembly operation is extremely inconvenient. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides an assembly tool for an elastic circlip for a valve component shaft.

[0005] The utility model is achieved through the following technical solutions:

[0006] An assembly tool for an elastic circlip for a valve component shaft includes a valve core support seat and a press-fitting head. The press-fitting head is cylindrical and is located directly above the valve core support seat. The press-fitting head includes a press-fitting head body and a boss coaxially provided at the lower end of the press-fitting head body. A retaining ring positioning groove is coaxially provided at the lower end of the boss, and a limiting blind hole is coaxially provided at the bottom of the retaining ring positioning groove.

[0007] The valve core support seat is a stepped shaft and is coaxially arranged with the press-fitting head.

[0008] The valve core support seat includes a support seat body and a valve core support boss coaxially provided on the support seat body.

[0009] The retaining ring positioning groove includes a circular positioning groove and a rectangular avoidance groove, and the rectangular avoidance groove is communicated with the circular positioning groove.

[0010] The side wall of the circular positioning groove is a conical surface.

[0011] The taper angle of the conical surface is 60°.

[0012] The beneficial effects of the present utility model are as follows: After assembling the valve body, valve core, spring and spring seat in the valve assembly together, the valve body and valve core are supported by the valve core support seat, and the lower end of the valve core is axially positioned. Then, the elastic retaining ring is placed into the retaining ring positioning groove at the lower end of the press-fitting head, and the spring seat is pressed down by the press-fitting head to compress the spring until the elastic retaining ring is pressed into the snap ring groove on the valve core. When the elastic retaining ring is just pressed into the snap ring groove on the valve core, the upper end of the valve core contacts the bottom surface of the limiting blind hole to prevent over-press-fitting. With the tooling, a worker can quickly complete the press-fitting work of the elastic retaining ring, significantly improving the assembly efficiency of the valve assembly, helping to reduce the production cost of the valve, and being able to conveniently realize the assembly of the elastic retaining ring within a limited operating space. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of the valve assembly when the elastic retaining ring is not assembled onto the valve core;

[0014] Figure 2 It is a schematic structural diagram of the valve assembly after the elastic retaining ring is assembled onto the valve core;

[0015] Figure 3 It is a schematic structural diagram of the present utility model when assembling the valve assembly;

[0016] Figure 4 It is a schematic structural diagram of the valve core support seat of the present utility model;

[0017] Figure 5 It is a schematic structural diagram of the press-fitting head of the present utility model;

[0018] Figure 6 For Figure 5 bottom view;

[0019] Figure 7 It is a schematic structural diagram of the present utility model when separated from the unassembled valve assembly;

[0020] Figure 8 For Figure 7 bottom view of the press-fitting head in

[0021] Figure 9 It is a state diagram of the present utility model when separated from the unassembled valve assembly;

[0022] Figure 10 It is a state diagram when installing the unassembled valve assembly onto the valve core support seat of the present utility model;

[0023] Figure 11 It is a state diagram when the press-fitting head in the present utility model starts to press down the valve assembly for assembly;

[0024] Figure 12 This is a state diagram when the valve assembly of the present utility model has been assembled in place;

[0025] Figure 13 This is a state diagram when the assembled valve assembly is taken out from the present utility model.

[0026] In the figure: 1 - valve assembly, 11 - circlip, 12 - spring seat, 13 - spring, 14 - valve core, 15 - valve body, 2 - press - fitting head, 20 - press - fitting head body, 21 - boss, 22 - circular positioning groove, 23 - conical surface, 24 - limiting blind hole, 25 - rectangular relief groove, 3 - valve core support seat, 30 - support seat body, 31 - valve core support boss. Specific embodiments

[0027] The technical solution of the present utility model will be further described below, but the scope of protection is not limited thereto.

[0028] As Figures 1 to 13 shown, a kind of assembly tool for the shaft - used circlip of the valve assembly of the present utility model includes a valve core support seat 3 and a press - fitting head 2. The press - fitting head 2 is cylindrical and is located directly above the valve core support seat 3. The press - fitting head 2 includes a press - fitting head body 20 and a boss 21 coaxially arranged at the lower end of the press - fitting head body 20. A circlip positioning groove is coaxially arranged at the lower end of the boss 21, and a limiting blind hole 24 is coaxially arranged at the bottom of the circlip positioning groove. As Figure 7 shown, the diameter of the limiting blind hole 24 is ΦA, which has a clearance fit with the outer diameter ΦA1 of the valve core 14, and the fit clearance is 0.01 mm - 0.03 mm (flexibly adjusted according to specific circumstances) to ensure that the circlip 11 can be smoothly pressed into the snap - ring groove; the depth dimension L4 of the limiting blind hole 24 is the position dimension L of the snap - ring groove + 0.5 mm (flexibly adjusted according to specific circumstances), so that the bottom surface of the ΦA limiting blind hole 24 has a limiting effect on the downward movement distance of the press - fitting head 2 relative to the valve core 14, ensuring that the circlip 11 is not over - pressed.

[0029] After assembling the valve body 15, the valve core 14, the spring 13 and the spring seat 12 in the valve component 1 together, the valve body 15 and the valve core 14 are supported by the valve core support seat 3, and the lower end of the valve core 14 is axially positioned. Then, the circlip 11 is placed into the circlip positioning groove at the lower end of the press - fitting head 2, and the press - fitting head 2 is used to press down the spring seat 12 to compress the spring 13 until the circlip 11 is pressed into the snap - ring groove on the valve core 14. When the circlip 11 is just pressed into the snap - ring groove on the valve core 14, the upper end of the valve core 14 contacts the bottom surface of the limit blind hole 24 to prevent over - press - fitting. With the tooling, a worker can quickly complete the press - fitting work of the circlip 11, significantly improving the assembly efficiency of the valve component 1, helping to reduce the production cost of the valve, and being able to conveniently realize the assembly of the circlip 11 within a limited operating space.

[0030] The valve core support seat 3 is a stepped shaft and is coaxially arranged with the press - fitting head 2.

[0031] The valve core support seat 3 includes a support seat main body 30 and a valve core support boss 31 coaxially arranged on the support seat main body 30. As Figure 7 shown, the diameter ΦF1 of the valve core support boss 31 is 0.02 mm - 0.03 mm smaller than the outlet size ΦF of the valve body 15; the height L2 of the valve core support boss 31 should be the dimension L3 + 0.5 mm, so that it has a limiting and supporting effect.

[0032] The circlip positioning groove includes a circular positioning groove 22 and a rectangular relief groove 25, and the rectangular relief groove 25 is communicated with the circular positioning groove 22. As Figure 7 and Figure 8 shown, the bottom surface C of the circular positioning groove 22 is the limiting plane of the circlip 11. During press - fitting, it can press a part of the circlip 11 that is not less than the outer diameter (ΦA1) of the valve core 14. With the help of the downward pressure, the circlip 11 expands outwards and slides down along the outer circle of the valve core 14 and snaps into the snap - ring groove. ΦG is the bottom diameter of the circular positioning groove 22, which is equal to the outer diameter of the circlip 11+0.5 mm (flexibly adjusted according to the specific situation), ensuring that the circlip 11 does not shake and plays a limiting role. The dimension L1 is the distance between the outer contours of the two disassembly holes of the circlip 11+0.5 mm, ensuring that the circlip 11 can be flush with the plane C. The plane D is the pressing plane of the spring seat 12, and its function is to press the spring seat 12 to overcome the elastic force of the spring 13. The outer diameter dimension ΦB of the boss 21 should be less than or equal to the rabbet size ΦB1 of the valve body 15.

[0033] The side wall of the circular positioning groove 22 is a conical surface 23.

[0034] The cone angle of the conical surface 23 is 60°. The conical surface 23 can reduce the expansion resistance of the circlip 11. When the circlip 11 expands outwards, its outer diameter will increase. Under the simultaneous action of the guidance and downward pressure of the conical surface 23, the tension of the circlip 11 can be easily overcome.

[0035] The maximum diameter dimensions of the valve core support seat 3 and the press-fitting head 2 can be flexibly adjusted according to the specific use experience, as long as the operator feels comfortable and convenient to use. Before placing the circlip 11 into the circlip positioning groove at the lower end of the press-fitting head 2, an appropriate amount of butter / hydraulic oil can be applied to the outer surface of the circlip 11 so that it can adsorb to the plane C. During assembly, it is necessary to ensure that the press-fitting head 2 is pressed vertically downwards to ensure that the circlip 11 is successfully pressed into the snap ring groove on the valve core 14.

Claims

1. An assembly tool for an elastic retaining ring for a valve component shaft, characterized in that: It includes a valve core support seat (3) and a press-fitting head (2). The press-fitting head (2) is cylindrical and located directly above the valve core support seat (3). The press-fitting head (2) includes a press-fitting head main body (20) and a boss (21) coaxially arranged at the lower end of the press-fitting head main body (20). A retaining ring positioning groove is coaxially provided at the lower end of the boss (21), and a limiting blind hole (24) is coaxially provided at the bottom of the retaining ring positioning groove.

2. The elastic retaining ring assembly tooling for the valve component shaft according to claim 1, wherein: The valve core support seat (3) is a stepped shaft and is coaxially arranged with the press-fitting head (2).

3. The assembling tooling for the shaft circlip of the valve assembly according to claim 2, characterized in that: The valve core support seat (3) includes a support seat main body (30) and a valve core support boss (31) coaxially arranged on the support seat main body (30).

4. The elastic retaining ring assembly tooling for the valve component shaft according to claim 1, characterized in that: The retaining ring positioning groove includes a circular positioning groove (22) and a rectangular relief groove (25), and the rectangular relief groove (25) communicates with the circular positioning groove (22).

5. The assembly tooling for the shaft circlip of the valve assembly according to claim 4, characterized in that: The side wall of the circular positioning groove (22) is a conical surface (23).

6. The elastic circlip assembly tooling for the valve component shaft as described in claim 5, wherein: The cone angle of the conical surface (23) is 60°.

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