An assembled earless clamp spring device

Abstract

The utility model discloses an assembled earless clamp spring device, including base, bearing, guide sleeve, earless clamp spring and upper pressing sleeve, the base is fixed on the press, the base upper end is provided with the positioning axle hole for positioning installation bearing, the bearing upper end is covered with the guide sleeve, the guide sleeve lower extreme is established with the positioning recess that cooperates with the bearing upper end, the guide sleeve is cone frustum, earless clamp spring initial state is covered on the guide sleeve upper portion, the guide sleeve is covered with the upper pressing sleeve that is matched with pressure equipment, and upper pressing sleeve lower extreme is established with the pressure equipment hole, the pressure equipment hole inner diameter is matched with the guide sleeve lower extreme outer diameter. Through above -mentioned mode, the utility model axle hole positioning, accurate positioning, assembly is quick, guide sleeve taper surface design, assembly is earless clamp spring gradually dilate, and earless clamp spring is guided in the process of moving down to the guide sleeve, guarantees coaxial pressure equipment in place, avoids the product deformation that the improper assembly produces, and the scrap rate is low.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, and in particular to an assembly device for earless retaining rings. Background Technology

[0002] The manufacturing of engine circulating cooling water pumps involves the installation of bearings and earless retaining rings, such as... Figure 1 As shown, the upper end of the bearing is provided with an annular groove that mates with the earless retaining ring. Since the earless retaining ring does not have a protruding ear, the installation method is different from that of the ordinary retaining ring with ear. Earless retaining rings are often assembled using special pliers. Excessive expansion can cause permanent deformation of the retaining ring. Tilted installation can cause the retaining ring to not be fully inserted into the groove. In addition, there is a risk that the retaining ring may suddenly spring out during the assembly process.

[0003] Chinese patent CN201920417165.7 discloses a tooling for installing earless retaining rings. It uses an upper mold tooling to press the earless retaining ring, causing it to elastically deform within a conical cylinder until its diameter is 0.2 mm smaller than the diameter of the bearing chamber in the housing cover. Simultaneously, it quickly presses the earless retaining ring into the retaining ring groove inside the bearing chamber, thereby installing the earless retaining ring. However, during the pressing process, it is impossible to ensure uniform deformation around the earless retaining ring. Furthermore, there is no guiding guidance for the inner ring of the earless retaining ring during the pressing process, making it easy to install at an angle.

[0004] Based on the above defects and shortcomings, it is necessary to improve the existing technology and design an assembly device for earless snap rings. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide an assembly device for earless retaining rings, which features shaft hole positioning, precise positioning, and rapid assembly. The guide sleeve has a conical surface design, and the earless retaining ring gradually expands during assembly. The guide sleeve guides the earless retaining ring as it moves downward, ensuring that it is coaxially pressed into place and avoiding product deformation caused by improper assembly.

[0006] To solve the above-mentioned technical problems, the present invention provides a device for assembling a loop-less retaining ring. This device includes a base, a bearing, a guide sleeve, a loop-less retaining ring, and an upper pressure sleeve. The base is fixed on a press. The upper end of the base is provided with a positioning shaft hole for positioning and installing the bearing. The upper end of the bearing is fitted with a guide sleeve. The lower end of the guide sleeve is provided with a positioning groove that mates with the upper end of the bearing. The guide sleeve is frustoconical. The loop-less retaining ring is initially fitted on the upper part of the guide sleeve. The guide sleeve is fitted with an upper pressure sleeve that is press-fitted to it. The lower end of the upper pressure sleeve is provided with a press-fit hole. The inner diameter of the press-fit hole mates with the outer diameter of the lower end of the guide sleeve.

[0007] Preferably, the positioning shaft hole is clearance-fitted with the lower end of the bearing.

[0008] Preferably, the positioning groove is clearance-fitted to the upper end of the bearing.

[0009] Preferably, the guide sleeve has side planes on both sides that mate with the planes on both sides of the upper end of the bearing.

[0010] Preferably, the upper pressure sleeve includes a pressing part and an mounting part connected in sequence, the pressing hole is provided at the lower end of the pressing part, and the mounting part is used to install onto the press head of the press.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The shaft hole positioning design avoids clamping the product during assembly, preventing damage, and the structure is simple and reliable;

[0013] The guide sleeve has a conical surface design. During assembly, the earless retaining spring gradually expands. The guide sleeve guides the earless retaining spring as it moves down, ensuring that it is pressed into place coaxially. This avoids product deformation caused by improper assembly and results in a low scrap rate.

[0014] Precise workpiece positioning, rapid assembly, and high production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the product structure.

[0016] Figure 2 This is a schematic diagram of the unfolded structure of an assembly of a looper without ear loops.

[0017] Figure 3 This is a cross-sectional view of an assembly of a looper without ear loops.

[0018] Figure 4 This is a partial structural diagram of an assembly of a looper without ear loops.

[0019] Among them, 1. base, 10. positioning shaft hole, 2. bearing, 3. guide sleeve, 30. positioning groove, 4. earless snap ring, 5. upper pressure sleeve, 50. press-fit hole, 51. press-fit part, 52. mounting part. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0021] Please see Figures 1 to 4 The embodiments of this utility model include:

[0022] An assembly of a looper without ear loops includes a base 1, a bearing 2, a guide sleeve 3, a looper without ear loops 4, and an upper pressure sleeve 5.

[0023] The base 1 is fixed on the press. The upper end of the base 1 is provided with a positioning shaft hole 10. The positioning shaft hole 10 is clearance-fitted with the lower end of the bearing 2. The bearing 2 is installed in the positioning shaft hole 10 of the base 1.

[0024] The upper end of the bearing 2 is fitted with a guide sleeve 3, and the lower end of the guide sleeve 3 is provided with a positioning groove 30 that cooperates with the upper end of the bearing 2. The guide sleeve 3 is truncated cone-shaped. The earless retaining spring 4 is initially fitted on the upper part of the guide sleeve 3. The guide sleeve 3 has side planes on both sides that cooperate with the two side planes of the upper end of the bearing 2.

[0025] The guide sleeve 3 is fitted with an upper pressure sleeve 5 that is press-fitted to it. The lower end of the upper pressure sleeve 5 has a press-fit hole 50. The inner diameter of the press-fit hole 50 matches the outer diameter of the lower end of the guide sleeve 3. The upper pressure sleeve 5 is installed on the press head of the press.

[0026] The upper pressure sleeve 5 includes a pressing part 51 and an mounting part 52 connected in sequence. The pressing hole 50 is provided at the lower end of the pressing part 51, and the mounting part 52 is used to install onto the press head of the press.

[0027] The following steps are included when assembling an earless snap ring device according to this utility model:

[0028] Base 1 is fixed on the press;

[0029] Fix the upper pressure sleeve 5 to the upper pressure head of the press;

[0030] The lower end of bearing 2 is inserted into the positioning shaft hole 10 of base 1;

[0031] The positioning groove 30 of the guide sleeve 3 is fastened downward to the upper end of the bearing 2;

[0032] The earless retaining ring 4 is fitted onto the upper end of the guide sleeve 3;

[0033] Move the press rod of the press, and move the upper press sleeve 5 down to push the earless snap ring 4 into the annular groove of the bearing 2;

[0034] Lift the press lever and remove the bearing 2 with the earless retaining spring 4 assembled;

[0035] Repeat the above steps to assemble in a loop.

[0036] This utility model discloses an assembly device for earless retaining rings. The shaft hole positioning ensures precise positioning and rapid assembly. The guide sleeve has a conical surface design, and the earless retaining ring gradually expands during assembly. The guide sleeve guides the earless retaining ring as it moves downward, ensuring that it is coaxially pressed into place. This avoids product deformation caused by improper assembly and results in a low scrap rate.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for assembling a loop-less retaining ring, characterized in that: The assembly includes a base (1), a bearing (2), a guide sleeve (3), a loop circlip (4), and an upper pressure sleeve (5). The base (1) is fixed on the press. The upper end of the base (1) is provided with a positioning shaft hole (10) for positioning and installing the bearing (2). The upper end of the bearing (2) is fitted with a guide sleeve (3). The lower end of the guide sleeve (3) is provided with a positioning groove (30) that cooperates with the upper end of the bearing (2). The guide sleeve (3) is frustoconical. The loop circlip (4) is initially fitted on the upper part of the guide sleeve (3). The upper pressure sleeve (5) is fitted on the guide sleeve (3) and is press-fitted with it. The lower end of the upper pressure sleeve (5) is provided with a press-fit hole (50). The inner diameter of the press-fit hole (50) is matched with the outer diameter of the lower end of the guide sleeve (3).

2. The assembly of a loop-less retaining device according to claim 1, characterized in that: The positioning shaft hole (10) is clearance-fitted with the lower end of the bearing (2).

3. The assembly of a loop-less retaining device according to claim 1, characterized in that: The positioning groove (30) is clearance-fitted to the upper end of the bearing (2).

4. The assembly of a loop-less retaining device according to claim 1, characterized in that: The guide sleeve (3) has side planes on both sides that mate with the upper side planes of the bearing (2).

5. The assembly of a loop-less retaining device according to claim 1, characterized in that: The upper pressure sleeve (5) includes a pressing part (51) and a mounting part (52) connected in sequence. The pressing hole (50) is located at the lower end of the pressing part (51), and the mounting part (52) is used to install onto the press head of the press.

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