Assembling tool for H-L shifting fork sub-assembly of transfer case
By designing an assembly fixture for the HL shift fork subassembly of the transfer case, the problem of difficult installation of the buffer spring was solved, achieving efficient installation and safe assembly of parts, thus improving assembly efficiency and success rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TANGSHAN TONGLI GEAR
- Filing Date
- 2025-07-04
- Publication Date
- 2026-04-17
AI Technical Summary
The buffer spring of the HL shift fork subassembly is difficult to install and cannot be manually compressed to the appropriate size, resulting in installation failure and damage to parts.
An assembly fixture for the HL shift fork subassembly of a transfer case was designed, comprising components such as a base plate, base, column, clamping sleeve, positioning column, clamping plate, slider, and handle. The fixture achieves efficient installation of the HL shift fork subassembly through threaded connection and positioning structure.
This improves the installation efficiency and success rate of the HL shift fork subassembly, avoids damage to parts, and ensures the safety and reliability of assembly.
Smart Images

Figure CN224129624U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an assembly tooling for a transfer case HL shift fork subassembly, belonging to the field of automotive transfer case component assembly technology. Background Technology
[0002] The assembly of transfer case components is one of the most critical steps in the production and manufacturing of transfer cases, and it plays a decisive role in whether the transfer case can reduce noise and ensure safety during vehicle operation.
[0003] See attached document Figure 1-5 The HL shift fork subassembly includes the HL shift fork bushing I, buffer spring II, washer III, HL shift fork assembly IV, HL shift fork limit baffle V, and buffer spring baffle VI assembly. Because the buffer spring II on the HL shift fork subassembly has excessive elasticity, it cannot be manually compressed to the appropriate size during installation. Furthermore, after compression, it must be kept in the compressed position for a period of time before subsequent parts can be installed. Otherwise, the installation will fail and damage subsequent parts. Therefore, it cannot be installed successfully on its own. Utility Model Content
[0004] The purpose of this utility model is to provide an assembly tooling for the HL shift fork subassembly of the transfer case, so as to achieve efficient installation of the HL shift fork subassembly, improve installation efficiency and success rate, and avoid problems such as unsuccessful installation and damage to parts.
[0005] The technical solution of this utility model is:
[0006] A transfer case HL shift fork subassembly assembly fixture includes a base plate, a base, columns, a left clamping sleeve, a right clamping sleeve, a first positioning column, a second positioning column, a clamping plate, a slider, a handle, and a nut. The base is fixed on the base plate, and the base plate is provided with the first positioning column and the second positioning column that mate with the parts to be assembled. The two columns are symmetrically fixed on the left and right sides of the base. The handle is fixed on the clamping plate, and the slider is installed on the handle and the nut is tightened. The clamping plate, slider, handle, and nut are combined to form a clamping assembly for the parts to be assembled. The two sets of clamping assemblies for the parts to be assembled are respectively fitted onto the columns on the left and right sides of the base. The left clamping sleeve is screwed into the left column, and the right clamping sleeve is screwed into the right column.
[0007] Furthermore, the column is provided with threads that mate with the left and right clamping sleeves.
[0008] Furthermore, the clamping plate in the clamping assembly of the parts to be assembled cooperates with the parts to be assembled.
[0009] Furthermore, the positioning pin one and positioning pin two, which mate with the parts to be assembled, are fixed to the base plate by bolts.
[0010] The beneficial effects of this utility model are: it can realize the efficient assembly of the transfer case HL shift fork subassembly, thereby improving assembly efficiency, avoiding damage to parts, and ensuring the safety and reliability of assembly. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the HL shift fork subassembly structure;
[0012] Figure 2 for Figure 1 Side view;
[0013] Figure 3 Schematic diagram of HL shift fork bushing;
[0014] Figure 4 Main view of the HL toggle fork component;
[0015] Figure 5 for Figure 4 AA section view;
[0016] Figure 6 This is a schematic diagram of the structure of this utility model;
[0017] Figure 7 This is a front view of the base of this utility model;
[0018] Figure 8 This is a top view of the base of this utility model;
[0019] Figure 9 This is the main view of the column of this utility model;
[0020] Figure 10 This is a top view of the column of this utility model;
[0021] Figure 11 This is a schematic diagram of the left clamping sleeve of this utility model;
[0022] Figure 12 This is a schematic diagram of the right clamping sleeve of this utility model;
[0023] Figure 13 This is a schematic diagram of the clamping plate of this utility model;
[0024] Figure 14 This is a cross-sectional view of the clamping plate BB of this utility model;
[0025] Figure 15 This is a schematic diagram of the slider of this utility model;
[0026] Figure 16 This is a schematic diagram of the handle of this utility model;
[0027] In the diagram: HL shift fork bushing I, buffer spring II, washer III, HL shift fork assembly IV, HL shift fork limit stop V, buffer spring stop VI;
[0028] 1. Base plate; 2. Base; 3. Column; 4. Left clamping sleeve; 5. Right clamping sleeve; 6. Socket headstock bolt 1; 7. Socket headstock bolt 2; 8. Positioning post 1; 9. Positioning post 2; 10. Clamping plate; 11. Slider; 12. Handle; 13. Nut; 14. Socket headstock bolt 3; 15. Socket headstock bolt 4. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and examples.
[0030] See attached document Figure 6-16 A transfer case HL shift fork subassembly assembly fixture includes a base plate 1, a base 2, a column 3, a left clamping sleeve 4, a right clamping sleeve 5, a positioning post 1 8, a positioning post 2 9, a clamping plate 10, a slider 11, a handle 12, and a nut 13. The base 2 is fixed on the base plate 1. The base plate 1 is provided with positioning post 1 8 and positioning post 2 9 that mate with the parts to be assembled. The two columns 3 are symmetrically fixed on the left and right sides of the base 2. The handle 12 is fixed on the clamping plate 10. The slider 11 is installed on the handle 12 and the nut 13 is tightened. The clamping plate 10, slider 11, handle 12, and nut 13 are combined to form a clamping assembly for the parts to be assembled. The two sets of clamping assemblies for the parts to be assembled are respectively fitted onto the columns 3 on the left and right sides of the base 2. The left clamping sleeve 4 is screwed into the left column 3, and the right clamping sleeve 5 is screwed into the right column 3.
[0031] In this embodiment, refer to the appendix Figure 6-16 The fixture includes a base plate 1, a base 2, a column 3, a left clamping sleeve 4, a right clamping sleeve 5, a hex bolt 1 6, a hex bolt 7, a positioning post 1 8, a positioning post 2 9, a clamping plate 10, a slider 11, a handle 12, and a nut 13, wherein:
[0032] The base plate 1 is used for positioning the entire tooling. Through holes are drilled at the four corners to facilitate the subsequent fixing of the entire tooling.
[0033] The shape of base 2 is designed according to the parts that need to be positioned, so that it can be fixed easily and accurately.
[0034] The two columns 3 are identical and have external threads, which enables precise positioning of the clamping plate 10.
[0035] The left clamping sleeve 4 and the right clamping sleeve 5, through their threaded engagement with the column 3, can provide sufficient torque for the deformation of the parts.
[0036] The clamping plates 10 are two identical ones, made into special shapes according to the parts (e.g. Figure 13 , 14As shown, the clamping plate 10 provides clamping force to the parts while also serving a good positioning function. The clamping plate 10 has a U-shaped structure, with a column 3 installed in its U-shaped groove. The left clamping sleeve 4 and the right clamping sleeve 5 are clamped to the corresponding sides of the clamping plate 10.
[0037] There are two identical sliders 11, which can easily pull out the assembled clamping plate 10.
[0038] During installation, install the base 2 onto the base plate 1 and tighten it with hex bolt 6. Install the positioning pins 8 and 9 onto the base plate 1 and tighten them with hex bolt 14. Install the two uprights 3 onto the left and right sides of the base 2 respectively and tighten them with hex bolt 7. Install the two handles 12 onto the two clamping plates 10 respectively and tighten them with hex bolt 15. Then, install the sliders 11 onto the two handles 12 respectively and tighten the nuts 13 to form the clamping assembly for the parts to be installed. Slide the clamping assembly for the parts to be installed onto the left and right uprights 3 respectively. Then, screw the left clamping sleeve 4 into the left upright 3 from the left and screw the right clamping sleeve 5 into the right upright 3 from the right to complete the positioning of the two sets of clamping assemblies for the parts to be installed.
[0039] When using, please refer to the appendix. Figure 1-16 First, rotate the left clamping sleeve 4 and the right clamping sleeve 5 to the far end, place the HL shift fork assembly IV into the groove of the base 2, and make its claws press against the end face of the positioning post 9. Position the HL shift fork assembly IV through the groove of the base 2 and the end face of the positioning post 9. Slide the buffer spring II onto the HL shift fork assembly IV from the right side, and then push the clamping plate 10 forward. Use the clamping plate 10 to press against the right end face of the buffer spring II from the right side. Rotate the right clamping sleeve 5 to the limit position with a torque wrench, and install the HL shift fork limit baffle V on the HL shift fork assembly IV, so that the HL shift fork limit baffle V and the buffer spring II are located inside the HL shift fork assembly IV. Pull the clamping plate 10 out by pulling the slider 11. Insert washer III and another buffer spring II onto the HL shift fork assembly IV from the left side, then push the clamping plate 10 forward. Use the clamping plate 10 to press against the left end face of the buffer spring II from the left side. Use a torque wrench to rotate the left clamping sleeve 4 to the limit position. Install the HL shift fork bushing I onto the buffer spring baffle assembly VI to form a joint. Then, insert the joint onto the HL shift fork assembly IV from the left side and make the HL shift fork limiting baffle V lock inside the joint. Pull the clamping plate 10 out by pulling the slider 11.
Claims
1. A transfer H-L fork subassembly assembly fixture characterized by: The assembly includes a base plate (1), a base (2), columns (3), a left clamping sleeve (4), a right clamping sleeve (5), a positioning column one (8), a positioning column two (9), a clamping plate (10), a slider (11), a handle (12), and a nut (13). The base (2) is fixed on the base plate (1). The base plate (1) is provided with positioning columns one (8) and two (9) that mate with the parts to be assembled. The two columns (3) are symmetrically fixed on the left and right sides of the base (2). The handle (12) is fixed on the pressure plate (10). The slider (11) is installed on the handle (12) and the nut (13) is tightened. The pressure plate (10), slider (11), handle (12) and nut (13) are combined to form the clamping assembly of the part to be installed. The two sets of clamping assemblies of the part to be installed are respectively fitted onto the columns (3) on the left and right sides of the base (2). The left clamping sleeve (4) is screwed into the left column (3) and the right clamping sleeve (5) is screwed into the right column (3).
2. A transfer H-L fork subassembly assembly fixture as described in claim 1, wherein: The column (3) is provided with threads that cooperate with the left clamping sleeve (4) and the right clamping sleeve (5).
3. The H-L fork assembly tooling of claim 1, wherein: The clamping plate (10) in the clamping assembly of the parts to be assembled cooperates with the parts to be assembled.
4. The H-L fork assembly tooling of claim 1, wherein: The positioning pin 1 (8) and positioning pin 2 (9) on the base plate (1) are respectively fixed to the base plate (1) by bolts.