Tool for rapidly and accurately assembling piston rod check ring

Abstract

The utility model discloses a tool for rapidly and accurately assembling a piston rod check ring. The tool comprises a pressing machine, a guide pressing block and a guide sleeve. A pressing head of the pressing machine is connected with the guide pressing block, the guide sleeve is located below the guide pressing block, a center hole of the guide pressing block is coaxial with a center hole of the guide sleeve, and the inner diameter of the center hole of the guide pressing block is equal to or larger than the outer diameter of the guide sleeve. A wedge-shaped annular space is formed between the bottom of the guide pressing block and the top of the guide sleeve, and an opening of the wedge-shaped annular space faces the guide sleeve. The utility model has the beneficial effects that the assembly speed of the check ring is greatly improved, and meanwhile, the assembly yield is also greatly improved; quick replacement can be realized so as to adapt to different types of check rings and piston rods; the tool is small, simple and convenient, saves machining cost and is convenient to place.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of automobile damping technical field, especially a kind of assembly tool. BACKGROUND

[0002] In the damper assembly process, the stop ring needs to be placed into the corresponding clamping groove of the piston rod to realize the positioning of the piston rod, and at the same time, ensure the compression of the piston rod and other contact components. Because the stop ring has high hardness, if it is entirely installed by hand during assembly, tools such as a clasp spring pliers and a force pliers need to be used. Although assembly can be achieved, it may cause deformation of the stop ring and poor clamping, which in turn leads to poor consistency and reliability of the product, and low assembly efficiency and yield.

[0003] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present utility model and should not be construed as acknowledging that this information is prior art with respect to the present utility model. SUMMARY

[0004] The technical problem to be solved by the utility model is how to solve the problem that the installation method of the stop ring easily causes deformation of the stop ring and poor clamping, which leads to poor consistency and reliability of the product.

[0005] The utility model solves the above technical problems by the following technical means:

[0006] A kind of piston rod stop ring rapid and accurate assembly tool, including press, guide pad, guide sleeve;The pressure head of the press is connected with the guide pad, the guide sleeve is located below the guide pad, the center hole of the guide pad is coaxial with the center hole of the guide sleeve, and the inner diameter of the center hole of the guide pad is equal to or greater than the outer diameter of the guide sleeve;A wedge-shaped annular space is formed between the bottom of the guide pad and the top of the guide sleeve, and the opening of the wedge-shaped annular space faces the guide sleeve.

[0007] During assembly, the piston rod is placed vertically, the stop ring is placed in the wedge-shaped annular space, and the guide pad moves downward under the action of the pressure head, which can push the stop ring to move downward along the wedge-shaped annular space in a rolling manner. The stop ring rolls over the guide sleeve and finally reaches the groove of the piston rod, completing the assembly. The assembly speed of the stop ring is greatly improved, and the assembly yield is also greatly improved. Rapid replacement can be achieved to adapt to different types of stop rings and piston rods. The tool is small and simple, saves processing cost, and is easy to place.

[0008] Preferably, the center hole of the guide pad is a tapered guide hole.

[0009] Preferably, the outer wall top of the guide sleeve is a conical structure, and the conical guide hole of the guide pressing block is consistent with the inclined direction of the conical structure of the guide sleeve.

[0010] The conical guide hole of the guide pressing block is consistent with the inclined direction of the conical structure of the guide sleeve, so that the stop ring can gradually roll on the guide sleeve to the piston rod, the friction is small, the assembly speed is fast, and the stop ring is not prone to deformation.

[0011] Preferably, the inner diameter of the center hole of the guide pressing block is equal to the outer diameter of the piston rod, or the inner radius difference of the center hole of the guide pressing block and the outer radius of the piston rod is less than the linear diameter of the stop ring.

[0012] Preferably, the outer diameter of the guide sleeve is equal to the outer diameter of the piston rod.

[0013] Preferably, the top end of the piston rod has an annular L-shaped groove, and the guide sleeve is sleeved at the annular L-shaped groove.

[0014] Preferably, the top end of the guide sleeve is higher than the top end of the piston rod.

[0015] Preferably, the press further comprises a bottom plate located below the pressing head, and when assembling, the piston rod is placed on the bottom plate, the guide sleeve is sleeved at the top end of the piston rod, the stop ring is sleeved at the top end of the guide sleeve, and the bottom of the guide pressing block presses the stop ring.

[0016] The utility model discloses the advantages are:

[0017] When assembling, the piston rod is vertically placed, the stop ring is placed in the wedge-shaped annular space, and the guide pressing block moves downward under the action of the pressing head, so as to push the stop ring to move downward along the wedge-shaped annular space in a rolling mode. The stop ring rolls through the guide sleeve and finally reaches the groove of the piston rod, and the assembly is completed. The stop ring assembly speed is greatly improved, and the assembly yield is also greatly improved. The tool is small and simple, and the processing cost is saved.

[0018] The conical guide hole of the guide pressing block is consistent with the inclined direction of the conical structure of the guide sleeve, so that the stop ring can gradually roll on the guide sleeve to the piston rod, the friction is small, the assembly speed is fast, and the stop ring is not prone to deformation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the tool for quickly and accurately assembling the stop ring of the piston rod.

[0020] Figure 2 This is a partially enlarged view of a tooling for quick and precise assembly of a piston rod stop ring according to an embodiment of this utility model;

[0021] Numbering on the map:

[0022] 1. Guide block; 2. Guide sleeve; 3. Piston rod; 4. Stop ring; 5. Pressure head; 6. Base plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] like Figure 1 , Figure 2 As shown, a tooling for quick and precise assembly of a piston rod stop ring includes a press, a guide block 1, a guide sleeve 2, a piston rod 3, and a stop ring 4. The press includes a press head 5 and a base plate 6. In this embodiment, the press head 5 and the base plate 6 are arranged vertically, with the press head 5 located above the base plate 6. In this embodiment, the press can be a manual press, and any existing technology can be used.

[0025] like Figure 1 As shown, the bottom of the pressure head 5 is connected to the guide block 1. The guide block 1 has a T-shaped vertical cross-section and a central hole. The guide block 1 is cylindrical, and its top has a connecting plate structure, which can be a flange structure, allowing the guide block 1 to be detachably connected to the bottom of the pressure head 5 via the flange structure and bolts. The bottom of the central hole of the guide block 1 is a tapered guide hole. The inner diameter of the straight section of the central hole of the guide block 1 is equal to or greater than the outer diameter of the guide sleeve 2, allowing the guide block 1 to smoothly push the stop ring 4 into the groove of the piston rod 3.

[0026] A wedge-shaped annular space is formed between the bottom of the guide block 1 and the top of the guide sleeve 2, with the opening of the wedge-shaped annular space facing the guide sleeve 2. In this embodiment, the bottom of the central hole of the guide block 1 is a conical guide hole, and the top of the outer wall of the guide sleeve 2 is a conical structure. The conical guide hole of the guide block 1 and the conical structure of the guide sleeve 2 are inclined in the same direction.

[0027] The tapered guide hole of the guide pressing block 1 and the tapered structure of the guide sleeve 2 enable the stop ring 4 to gradually roll on the guide sleeve 2 and be pushed into the groove of the piston rod 3, the friction is small, the assembly speed is fast, the stop ring 4 is not easy to deform, and the tapered structure can realize the guiding effect, and the stop ring 4 is automatically centered under the action of the tool.

[0028] It should be noted that the tapered guide hole of the guide pressing block 1 and the tapered structure of the guide sleeve 2 preferably have a certain height, so that the length of the tapered surface is larger, on the one hand, the included angle between the tapered surface and the vertical direction is smaller, so that the downward force of the pressing head is as large as possible, on the other hand, the stop ring 4 rolls on the hole wall of the tapered guide hole and the tapered surface of the tapered structure, compared with the pure pushing or extruding mode, the friction is reduced, and the deformation of the stop ring caused by extrusion is reduced. At the same time, preferably, the included angle between the tapered guide hole and the vertical direction is greater than the included angle between the tapered structure and the vertical direction, that is, the top thickness (L1) of the tapered annular space is smaller, and the bottom thickness (L2) is larger. Since the stop ring 4 is slightly expanded before entering the groove, due to the retraction force, the stop ring 4 has an upward retraction force. If the top thickness of the tapered annular space is small, the upward retraction of the stop ring 4 can be limited, so that the stop ring 4 can only roll downward and cannot escape from the top of the tapered annular space.

[0029] As shown in Figure 2 The inner diameter of the center hole of the guide pressing block 1 is equal to the outer diameter of the piston rod 3, or the inner radius of the center hole of the guide pressing block 1 is less than the outer radius of the piston rod 2. The difference between the stop ring 4 is less than the linear diameter. So that the guide pressing block 1 can move close to the groove, and the stop ring 4 can be smoothly pushed into the groove.

[0030] The outer diameter of the guide sleeve 2 is equal to the outer diameter of the piston rod 2 (at the groove), so that after the guide sleeve 2 is sleeved on the piston rod 2, the outer wall of the guide sleeve 2 and the outer wall of the piston rod 2 are basically the same size. Or the outer diameter of the guide sleeve 2 can be slightly larger than the outer diameter of the piston rod 2, which can expand the stop ring 4 by using the slightly larger guide sleeve 2, so that the stop ring 4 can smoothly enter the part of the piston rod 2.

[0031] In the embodiment, the top end outer wall of the piston rod 2 has an annular L-shaped groove, and the guide sleeve 2 is sleeved at the annular L-shaped groove. The top end of the guide sleeve 2 is higher than the top end of the piston rod 2.

[0032] In the assembly of the embodiment, the hand-held piston rod 3 is vertically placed on the bottom plate 6 of the hand press, the guide sleeve 2 is sleeved on the upper end of the piston rod 3 (note that the tapered surface faces upward), the stop ring 4 is sleeved on the upper end tapered surface of the guide sleeve 2, the hand-held guide block 1 is sleeved above the stop ring 4, the whole workpiece is ensured to be vertical to the bottom surface and located in the center position of the press, the pressure head 5 of the hand press is slowly pressed down, during the pressing process, the stop ring 4 is automatically centered under the action of the tooling and moves (rolls and pushes down) along the tapered surface of the guide sleeve 2 to the lower end cylindrical surface, and then moves from the lower end cylindrical surface of the guide sleeve 2 to the outer cylindrical surface of the piston rod 2, with the continuous pressing of the pressure head 5, the guide block 1 guides the stop ring 4 to be smoothly introduced into the groove of the piston rod 3.

[0033] The assembly speed of the stop ring 4 of the embodiment is greatly improved, and the assembly yield is also greatly improved; quick replacement can be realized to adapt to different types of stop rings and piston rods; the tooling is small and simple, machining cost is saved, and placement is facilitated.

[0034] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tool for quick and precise assembly of a piston rod stop ring, characterized in that, The device comprises a press, a guide block and a guide sleeve; the press head of the press is connected with the guide block, the guide sleeve is located below the guide block, the center hole of the guide block is coaxial with the center hole of the guide sleeve, the inner diameter of the center hole of the guide block is equal to or greater than the outer diameter of the guide sleeve; the bottom of the guide block and the top of the guide sleeve form a wedge-shaped annular space, and the opening of the wedge-shaped annular space faces the guide sleeve.

2. A tool for rapid and precise assembly of a piston rod stop ring according to claim 1, characterized in that The bottom of the center hole of the guide block is a tapered guide hole.

3. A tool for rapid and precise assembly of a piston rod stop ring according to claim 2, characterized in that The top of the outer wall of the guide sleeve is a tapered structure, and the tapered guide hole of the guide block is consistent with the inclined direction of the tapered structure of the guide sleeve.

4. A tool for rapid and precise assembly of a piston rod stop ring according to claim 1, characterized in that The inner diameter of the center hole of the guide block is equal to the outer diameter of the piston rod, or the difference between the inner radius of the center hole of the guide block and the outer radius of the piston rod is less than the wire diameter of the stop ring.

5. A tool for rapid and precise assembly of a piston rod stop ring according to claim 1, characterized in that The outer diameter of the guide sleeve is equal to the outer diameter of the piston rod.

6. A tool for rapid and precise assembly of a piston rod stop ring according to claim 1, characterized in that The top end of the piston rod has an annular L-shaped groove, and the guide sleeve is sleeved at the annular L-shaped groove.

7. A tool for rapid and precise assembly of a piston rod stop ring according to claim 6, characterized in that The top end of the guide sleeve is higher than the top end of the piston rod.

8. A tool for rapid and precise assembly of a piston rod stop ring according to claim 1, characterized in that The press further comprises a bottom plate located below the press head, and when assembled, the piston rod is placed on the bottom plate, the guide sleeve is sleeved at the top end of the piston rod, the stop ring is sleeved at the top end of the guide sleeve, and the bottom of the guide block presses the stop ring.

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