Auxiliary tool for assembling shock absorber

Abstract

The utility model relates to the technical field of shock absorber installation, in particular to an auxiliary tool for assembling a shock absorber, which comprises a guide sleeve arranged on a connecting rod in a sleeving manner, the guide sleeve covers the vehicle body end of the connecting rod, and the guide sleeve comprises a first guide part and a second guide part which are internally communicated; the outer circumferential wall of the first guiding part is provided with a guiding inclined face for an oil seal and a guider set to penetrate, the outer diameter of the second guiding part is equal to the outer diameter of the straight rod section of the connecting rod, and the outer diameter of the end, away from the second guiding part, of the first guiding part is smaller than the outer diameter of the other end of the first guiding part. The oil seal and the guider set are stably installed at the straight cylinder end of the connecting rod through the guide sleeve, abrasion caused by collision between the oil seal and the guider set and the vehicle body end of the connecting rod is avoided, and the performance of the shock absorber is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of shock absorber installation, and in particular to an auxiliary tool for assembling a shock absorber. Background Art

[0002] Shock absorber is one of the important parts of a car. Its working principle is to use the internal friction between oil molecules to form a damping force to reduce mechanical vibration and impact.

[0003] like Figure 1 As shown, the existing shock absorber includes components such as an oil seal 8, a guide assembly 5, and a connecting rod 2. The guide assembly 5 includes a guide 6 and a guide bushing 7. The oil seal 8 and the guide assembly 5 are placed on the connecting rod 2. The oil seal 8 is used to prevent leakage of the shock absorber hydraulic oil. The guide assembly 5 is used to position the connecting rod 2 and the oil seal 8. The connecting rod 2 drives the piston to perform reciprocating linear motion in the working cylinder under the guidance of the guide assembly 5.

[0004] The connecting rod 2 includes a body end 3 and a straight rod section 4. The body end 3 is connected to the body, and the straight rod section 4 extends into the working cylinder. The body end 3 is provided with a first step 17, a second step 18 and a third step 19 with gradually increasing diameters.

[0005] The existing installation method is usually manual operation. When the oil seal 8 and the guide group 5 are installed on the connecting rod 2 by hand, since the body end 3 of the connecting rod 2 is stepped, the oil seal 8 and the guide group 5 are easily tilted. The oil seal 8 and the guide group 5 collide with the connecting rod 2 and cause wear, which in turn causes the shock absorber to fail such as oil leakage and abnormal noise. Therefore, an auxiliary tool is urgently needed to solve the above problems and ensure that the oil seal 8 and the guide group 5 are smoothly installed on the connecting rod 2. Utility Model Content

[0006] In order to ensure that the oil seal and the guide assembly are smoothly installed on the connecting rod, the present application provides an auxiliary tool for assembling the shock absorber.

[0007] This application provides an auxiliary tool for assembling a shock absorber, which adopts the following technical solution:

[0008] An auxiliary tool for assembling a shock absorber, the auxiliary tool comprising a guide sleeve placed on a connecting rod, the guide sleeve covering the body end of the connecting rod, the guide sleeve comprising a first guide portion and a second guide portion which are internally connected, the outer peripheral wall of the first guide portion being provided with a guide slope for the oil seal and the guide assembly to penetrate, the outer diameter of the second guide portion being equal to the outer diameter of the straight rod section of the connecting rod, and the outer diameter of the first guide portion at one end away from the second guide portion being smaller than the outer diameter of the other end of the first guide portion.

[0009] By adopting the above technical solution, the guide sleeve is placed on the connecting rod and covers the body end of the connecting rod, so as to avoid collision damage to the oil seal and the guide group when they are installed on the connecting rod. The outer diameter of the first guide part away from the end of the second guide part is smaller than the outer diameter of the other end of the first guide part, which is convenient for the oil seal and the guide group to penetrate from the top of the guide sleeve. The outer peripheral wall of the first guide part is provided with a guide slope, which guides the penetration of the oil seal and the guide group. The outer diameter of the second guide part is equal to the outer diameter of the straight rod section of the connecting rod, which is convenient for the oil seal and the guide group to transition from the guide sleeve to the straight rod section of the connecting rod, thereby facilitating the subsequent oil seal and guide group to smoothly extend into the working cylinder of the shock absorber.

[0010] Optionally, the first guide portion is shaped like a truncated cone that is narrow at the top and wide at the bottom, and the second guide portion is shaped like a cylinder.

[0011] By adopting the above technical solution, the shape of the first guide part is a truncated cone, and the shape of the second guide part is a cylindrical shape, so that the guide sleeve is easier for the oil seal and the guide group to penetrate than the body end of the connecting rod. At the same time, the first guide part is narrow at the top and wide at the bottom, which facilitates the oil seal and the guide group to penetrate from the top end of the guide sleeve.

[0012] Optionally, a guide hole 1 is defined in the first guide portion, a guide hole 2 is defined in the second guide portion, the inner diameter of the guide hole 1 is smaller than the inner diameter of the guide hole 2, and the inner wall of the first guide portion located between the guide hole 1 and the guide hole 2 abuts against the first step.

[0013] By adopting the above technical solution, guide hole one is connected to guide hole two, which facilitates the insertion of the connecting rod into the guide sleeve. The inner diameter of guide hole one is smaller than the inner diameter of guide hole two, so that a step is formed in the transition between guide hole one and guide hole two. The step formed by the transition offsets the first step, so that the guide sleeve is more firmly placed on the vehicle body end of the connecting rod, and at the same time the guide sleeve is axially limited.

[0014] Optionally, the guide hole 2 includes connected through hole 1, through hole 2 and through hole 3, the diameters of through hole 1, through hole 2 and through hole 3 gradually increase, the inner wall of the second guide portion located between through hole 1 and through hole 2 abuts against the second step, and the inner wall of the second guide portion located between through hole 2 and through hole 3 abuts against the third step.

[0015] By adopting the above technical solution, the diameters of through hole one, through hole two and through hole three are gradually increased, so that steps are formed between through hole one and through hole two, and between through hole two and through hole three. The step between through hole one and through hole two offsets the second step, and the step between through hole two and through hole three offsets the third step, which further enhances the stability of the guide sleeve placed on the connecting rod body end and also strengthens the axial limit of the guide sleeve.

[0016] Optionally, the inner surface of the through hole three includes a centering inclined surface that fits with the third step.

[0017] By adopting the above technical solution, the centering bevel of the through hole three is offset against the third step of the connecting rod body end, so that the guide sleeve is more firmly placed on the connecting rod. At the same time, the setting of the centering bevel ensures that the guide sleeve is centered when installed on the connecting rod.

[0018] Optionally, there is an arcuate transition between the first guide portion and the second guide portion.

[0019] By adopting the above technical solution, the arc surface transition between the first guide portion and the second guide portion facilitates the transition of the oil seal and the guide assembly from the first guide portion to the second guide portion.

[0020] Optionally, the first guide portion is made of plastic material.

[0021] By adopting the above technical solution, the first guide part is made of plastic material. Compared with metal, plastic can prevent the oil seal and the guide assembly from being damaged by collision when penetrating into the first guide part.

[0022] Optionally, a magnetic sheet that is magnetically attracted to the connecting rod is provided on the centering inclined surface.

[0023] By adopting the above technical solution, when the guide sleeve is placed on the connecting rod, the magnetic effect of the magnetic sheet is utilized to magnetically attract the centering inclined surface of the second guide part to the third step, so that the guide sleeve can be quickly centered, and at the same time, the guide sleeve and the third step of the connecting rod are stably fitted.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The guide sleeve is placed on the connecting rod and covers the body end of the connecting rod to prevent the oil seal and guide assembly from being damaged by collision when installed on the connecting rod. The outer diameter of the first guide part away from the second guide part is smaller than the outer diameter of the other end of the first guide part, which facilitates the oil seal and guide assembly to penetrate from the top of the guide sleeve. The outer peripheral wall of the first guide part is provided with a guiding slope to guide the penetration of the oil seal and guide assembly. The outer diameter of the second guide part is equal to the outer diameter of the straight rod section of the connecting rod, which facilitates the transition of the oil seal and guide assembly from the guide sleeve to the straight rod section of the connecting rod, thereby facilitating the subsequent smooth extension of the oil seal and guide assembly into the working cylinder of the shock absorber.

[0026] 2. The first guide portion is truncated cone-shaped, while the second guide portion is cylindrical. This makes it easier for the oil seal and guide assembly to penetrate the guide sleeve compared to the body end of the connecting rod. The first guide portion is narrow at the top and wide at the bottom, making it easier for the oil seal and guide assembly to penetrate from the top end of the guide sleeve.

[0027] 3. Guide hole 1 is connected to guide hole 2, which makes it easy for the connecting rod to pass into the guide sleeve. The inner diameter of guide hole 1 is smaller than the inner diameter of guide hole 2, so that a step is formed in the transition between guide hole 1 and guide hole 2. The step formed by the transition offsets the first step, so that the guide sleeve is more firmly placed on the vehicle body end of the connecting rod, and at the same time, the guide sleeve is axially limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a cross-sectional view of the existing oil seal and guide assembly installed on the connecting rod;

[0029] Figure 2 A schematic structural diagram of an embodiment of the present application;

[0030] Figure 3 A cross-sectional view of an embodiment of the present application;

[0031] Figure 4 for Figure 3 A magnified diagram of part A

[0032] Figure 5 This is a schematic diagram of the structure of the embodiment of the present application installed on the connecting rod.

[0033] Figure numerals: 1. guide sleeve; 2. connecting rod; 3. vehicle body end; 4. straight rod section; 5. guide assembly; 6. guide; 7. guide bushing; 8. oil seal; 9. first guide portion; 10. second guide portion; 11. guide slope; 12. guide hole one; 13. guide hole two; 14. through hole one; 15. through hole two; 16. through hole three; 17. first step; 18. second step; 19. third step; 20. centering slope; 21. magnetic sheet. DETAILED DESCRIPTION

[0034] The following is combined with Figure 2-5 This application is described in further detail. Example

[0035] An auxiliary tool for assembling shock absorbers, reference Figure 2 and Figure 3 The auxiliary tool includes a guide sleeve 1, which is placed on the connecting rod 2 and completely covers the vehicle body end 3 of the connecting rod 2. The guide sleeve 1 includes an integrally formed first guide portion 9 and a second guide portion 10.

[0036] refer to Figure 3 and Figure 5 The diameter of the top end of the first guide portion 9 is smaller than that of the other end of the first guide portion 9, which facilitates the insertion of the oil seal 8 and the guide group 5. A guiding inclined surface 11 for guiding the oil seal 8 and the guide group 5 is provided on the outer peripheral wall of the first guide portion 9. The outer diameter of the second guide portion 10 is equal to the outer diameter of the straight rod section 4 of the connecting rod 2, which facilitates the transition of the oil seal 8 and the guide group 5 from the guide sleeve 1 to the straight rod section 4 of the connecting rod 2.

[0037] refer to Figure 3 and Figure 5 The first guide portion 9 is shaped like a truncated cone, and the second guide portion 10 is shaped like a cylinder. The arc surface transition between the first guide portion 9 and the second guide portion 10 makes it easier for the oil seal 8 and the guide group 5 to penetrate the guide sleeve 1 compared to the body end 3 of the connecting rod 2. The first guide portion 9 is made of plastic. Compared with metal, plastic can prevent the oil seal 8 and the guide group 5 from being damaged by collision when penetrating the first guide portion 9.

[0038] refer to Figure 2 and Figure 3 A guide hole 12 is provided in the first guide portion 9, and a guide hole 2 13 is provided in the second guide portion 10. The diameter of the guide hole 12 is smaller than the diameter of the guide hole 2 13, so that a step is formed between the guide hole 12 and the guide hole 2 13 to offset the first step 17.

[0039] refer to Figure 3 and Figure 4 The guide hole 2 13 includes a connected through hole 14, a through hole 2 15 and a through hole 3 16. The diameters of the through hole 14, the through hole 2 15 and the through hole 3 16 gradually increase, so that a step that abuts the second step 18 is formed between the through hole 14 and the through hole 2 15, and a step that abuts the third step 19 is formed between the through hole 2 15 and the through hole 3 16. The inner hole surface of the through hole 3 16 includes a centering bevel 20 that facilitates the centering of the guide sleeve 1. The centering bevel 20 is provided with a magnetic sheet 21 that is magnetically attracted to the connecting rod 2. The connecting rod 2 is made of metal material. The centering bevel 20 can be magnetically attracted to the connecting rod 2 with the help of the magnetic sheet 21. The centering bevel 20 fits with the third step 19, thereby making the center line of the guide sleeve 1 as a whole coincide with the center line of the connecting rod 2.

[0040] The implementation principle of the embodiment of the present application is: when using the guide sleeve 1, first install the guide sleeve 1 to the body end 3 of the connecting rod 2, the step formed by the transition between the guide hole 12 and the guide hole 2 13 is offset against the first step 17, the step formed by the transition between the through hole 14 and the through hole 2 15 is offset against the second step 18, and the step formed by the transition between the through hole 2 15 and the through hole 3 16 is offset against the third step 19, and the magnetic sheet 21 on the centering bevel 20 is magnetically attracted to the connecting rod 2, and then the guide bushing 7 is passed through the guide sleeve 1 to the straight rod section 4 of the connecting rod 2, and then the guide 6 is placed on the straight rod section 4, and the guide bushing 7 is inserted into the guide 6, and the guide bushing 7 and the guide 6 form a guide group 5, and then solid grease is applied to the inner ring of the oil seal 8, and then the oil seal 8 is installed on the connecting rod 2 through the guide sleeve 1, and finally the oil seal 8 is manually pressed into the guide group 5.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An auxiliary tool for assembling a shock absorber, characterized in that: The auxiliary tool comprises a guide sleeve (1) placed on the connecting rod (2), the guide sleeve (1) covering the body end (3) of the connecting rod (2), the guide sleeve (1) comprising a first guide portion (9) and a second guide portion (10) which are internally connected, a guide slope (11) for the oil seal (8) and the guide assembly (5) to penetrate is provided on the outer peripheral wall of the first guide portion (9), the outer diameter of the second guide portion (10) is equal to the outer diameter of the straight rod section (4) of the connecting rod (2), and the outer diameter of the first guide portion (9) away from the second guide portion (10) is smaller than the outer diameter of the other end of the first guide portion (9).

2. The auxiliary tool for assembling a shock absorber according to claim 1, characterized in that: The first guide portion (9) is shaped like a truncated cone that is narrow at the top and wide at the bottom, and the second guide portion (10) is shaped like a cylinder.

3. The auxiliary tool for assembling a shock absorber according to claim 1, characterized in that: A guide hole 1 (12) is provided in the first guide portion (9), and a guide hole 2 (13) is provided in the second guide portion (10). The inner diameter of the guide hole 1 (12) is smaller than the inner diameter of the guide hole 2 (13). The inner wall of the first guide portion (9) located between the guide hole 1 (12) and the guide hole 2 (13) abuts against the first step (17).

4. The auxiliary tool for assembling a shock absorber according to claim 3, characterized in that: The guide hole 2 (13) includes a connected through hole 1 (14), a through hole 2 (15) and a through hole 3 (16), the diameters of the through hole 1 (14), the through hole 2 (15) and the through hole 3 (16) gradually increase, the inner wall of the second guide portion (10) located between the through hole 1 (14) and the through hole 2 (15) abuts against the second step (18), and the inner wall of the second guide portion (10) located between the through hole 2 (15) and the through hole 3 (16) abuts against the third step (19).

5. The auxiliary tool for assembling a shock absorber according to claim 4, characterized in that: The inner surface of the through hole three (16) includes a centering inclined surface (20) that fits with the third step (19).

6. The auxiliary tool for assembling a shock absorber according to claim 1, characterized in that: There is an arcuate transition between the first guide portion (9) and the second guide portion (10).

7. The auxiliary tool for assembling a shock absorber according to claim 1, characterized in that: The first guide portion (9) is a first guide portion (9) made of plastic material.

8. The auxiliary tool for assembling a shock absorber according to claim 5, characterized in that: The centering inclined surface (20) is provided with a magnetic sheet (21) that is magnetically attracted to the connecting rod (2).

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