M3 nut mounting tool
By designing M3 nut installation fixtures with multiple assembly methods, the problem of difficulty in tightening caused by the single fixture structure was solved, enabling flexible installation and efficient production, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 刘放
- Filing Date
- 2025-04-27
- Publication Date
- 2026-07-10
AI Technical Summary
In the current M3 nut installation process, the simple tooling structure makes it difficult to tighten in multiple directions, the operation is cumbersome, and the space is limited, requiring the use of auxiliary tools, which affects production efficiency and quality.
An M3 nut installation fixture was designed, including a handle, a first sleeve, a second sleeve, a third sleeve, and a nut sleeve. Through the combination of plug-in blocks and vertical and horizontal slots, multiple assembly methods can be achieved. The lever principle is used to assist rotation and simplify the operation process.
It improves the versatility and adaptability of tooling, reduces installation difficulty, increases production efficiency and quality, and reduces material costs.
Smart Images

Figure CN224476125U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nut installation technology, and in particular to an M3 nut installation fixture. Background Technology
[0002] In the vast and precise field of industrial production and machinery manufacturing, every tiny component carries the crucial mission of ensuring stable equipment operation and efficient production. M3 nuts, as a common fastener with precise dimensions and wide application, may seem insignificant, but they actually play a pivotal role. In order to meet the requirements for fastening M3 nuts, the fasteners used are particularly important.
[0003] The existing nuts have some shortcomings in actual use:
[0004] 1. Some M3 nuts have limited installation space. In such limited spaces, the nut can only be turned in one direction. Due to the simple tooling structure, it cannot meet the requirements of turning in multiple directions, making it difficult to install the nut.
[0005] 2. When assembling M3 nuts, the common practice is to first use a silicone rubber tube to cover the nut and washer, then assemble the product, and finally tighten it with a wrench. This process is cumbersome and greatly reduces on-site production and assembly efficiency.
[0006] 3. When disassembling or tightening the existing M3 nut installation fixture, due to the limited space of the fixture, it is not convenient to apply rotational force by directly rotating the fixture. In order to facilitate rotation, it is sometimes necessary to use auxiliary tools, which is cumbersome. Utility Model Content
[0007] The purpose of this utility model is to solve the problems in the existing technology where the nut can only be turned in one direction. Due to the simple tooling structure, it is difficult to complete the installation of the nut. The process of first using a silicone rubber tube to cover the nut and washer, then assembling the product, and finally tightening it with a wrench is cumbersome. The tooling space is limited, and it is not convenient to apply rotational force by directly rotating the tooling. In order to facilitate rotation, it is sometimes necessary to use auxiliary tools. Therefore, this utility model proposes an M3 nut installation tooling.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] An M3 nut mounting fixture, comprising:
[0010] The components include a handle, a first sleeve, a second sleeve, a third sleeve, and a nut sleeve, wherein the first sleeve is fixedly attached to the top of the handle.
[0011] The bottom of the nut sleeve, the third sleeve and the second sleeve are all provided with insertion blocks, and the top of the first sleeve, the second sleeve and the third sleeve are all provided with vertical grooves, and the insertion blocks are detachably inserted into the vertical grooves.
[0012] The top of the sidewalls of the first sleeve, the second sleeve, and the third sleeve are all provided with horizontal slots that communicate with the vertical slots, and the plug-in block can be inserted horizontally into the horizontal slots.
[0013] The top of the nut sleeve is provided with cross-shaped slots, which include interconnected washer slots and nut slots, and the diameter of the washer slot is larger than that of the nut slot.
[0014] As a further improvement to the above technical solution:
[0015] The bottom of the handle is provided with a sliding groove, and a pressing block is slidably connected in the sliding groove. The pressing block is elastically connected to the top of the sliding groove by a spring, and the bottom of the pressing block extends to the outside of the handle.
[0016] The handle sidewall has a connecting groove that connects to the sliding groove, the pressing block has a transverse groove, the top of the transverse groove is fixedly connected to a limiting block, the insertion block of the second sleeve has a through hole, and when the insertion block is inserted into the transverse groove through the connecting groove, the limiting block is engaged in the through hole.
[0017] The height of the transverse groove is greater than the sum of the height of the limiting block and the depth of the through hole.
[0018] The third sleeve is laterally inserted into the transverse groove of the first sleeve via a plug-in block to form an L-shaped structure.
[0019] When the second sleeve is inserted into the vertical groove of the first sleeve, its extension direction coincides with the handle axis.
[0020] When the pressing block is pressed, it causes the limiting block to disengage from the through hole, allowing the second sleeve to be pulled out axially along the connecting groove.
[0021] In this application, the nut sleeve, the third sleeve, the second sleeve, and the first sleeve can be vertically connected via insertion blocks and vertical slots, respectively. Simultaneously, the retaining slots can be vertically inserted into the top vertical slots of the second sleeve or the first sleeve via insertion blocks. The retaining slots can also be horizontally inserted into the horizontal slots of the third sleeve, the second sleeve, or the first sleeve via insertion blocks. The third sleeve can be horizontally inserted into the horizontal slot of the first sleeve via its bottom insertion block. The retaining slot at the bottom of the second sleeve can also be horizontally inserted into the horizontal slot of the first sleeve, thus achieving multiple assembly methods. The nut sleeve has both horizontal and vertical retaining slots, with two slots arranged in a cross-shaped staggered pattern. The appropriate retaining slot can be selected according to the installation space requirements, and suitable... An M3 nut can be placed in the slot. A washer is placed in the slot and positioned at one end of the M3 nut. By holding the handle, the M3 nut can be assembled onto the product. At the same time, one end of the second sleeve can be inserted into the connecting groove on one side of the handle, acting as a lever to assist in the rotation of the handle. When the second sleeve is inserted into one side of the handle, press the pressing block upwards. The pressing block pushes the spring to compress in the sliding groove. The pressing block makes room, and the slot at one end of the second sleeve passes through the connecting groove and is inserted into the transverse groove. Release the pressing block, the spring returns to its original position, the pressing block moves downwards, and the limiting block can be inserted into the through hole, thereby limiting the second sleeve. Pushing the second sleeve can then assist in the rotation of the handle, reducing the ease of rotation.
[0022] Beneficial effects: In this utility model, the M3 nut installation fixture allows the nut sleeve, third sleeve, second sleeve, and first sleeve to be vertically connected via insertion blocks and vertical slots. Simultaneously, the slots can be vertically inserted into the top vertical slots of the second or first sleeve via insertion blocks, or horizontally inserted into the horizontal slots of the third, second, or first sleeve via insertion blocks. Furthermore, the third sleeve can be horizontally inserted into the horizontal slot of the first sleeve via its bottom insertion block, and the second sleeve's bottom insertion block can also be horizontally inserted into the horizontal slot of the first sleeve, thus achieving multiple assembly methods. This design allows the fixture to be flexibly combined according to different installation spaces and requirements, greatly improving its versatility and adaptability, and meeting the M3 nut installation requirements under various complex conditions.
[0023] In this utility model, the M3 nut installation tool allows you to hold the handle and assemble the M3 nut onto the product. The operation is simple and intuitive. At the same time, one end of the second sleeve can be inserted into the connecting groove on one side of the handle to act as a lever, assisting the handle to rotate, reducing the force required during installation, making the installation process easier and more labor-saving, and effectively improving installation efficiency.
[0024] In this invention, placing a gasket in the slot and positioning it at one end of the M3 nut ensures that the M3 nut remains stable during installation, preventing problems such as skewing or loosening, thus guaranteeing the installation quality of the M3 nut and improving the overall quality of the product.
[0025] In this utility model, the tooling has a relatively simple overall structure, is composed of multiple simple parts, has a simple manufacturing process, low material cost, and has obvious cost advantages. It is suitable for small and medium-sized enterprises to purchase and use, and helps to reduce the production costs of enterprises. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of an M3 nut mounting fixture structure proposed in this utility model;
[0027] Figure 2 This is an exploded structural diagram of an M3 nut mounting fixture proposed in this utility model;
[0028] Figure 3 This is a schematic diagram of an M3 nut mounting fixture structure proposed in this utility model;
[0029] Figure 4 This is a partial cross-sectional view of the handle of an M3 nut mounting tool proposed in this utility model.
[0030] Figure 5 This is a schematic diagram of the structure of a pressing block for an M3 nut installation tool proposed in this utility model; Figure 6 This is a schematic diagram of an M3 nut mounting fixture structure proposed in this utility model;
[0031] Figure 7 This is a schematic diagram of an M3 nut mounting fixture structure proposed in this utility model;
[0032] Figure 8 This is a schematic diagram of an M3 nut installation fixture proposed in this utility model.
[0033] In the diagram: 1. Handle; 2. First sleeve; 3. Second sleeve; 4. Third sleeve; 5. Nut sleeve; 6. Connecting groove; 7. Snap-in groove; 8. Insertion block; 9. Vertical groove; 10. Through hole; 11. Horizontal groove; 12. Pressing block; 13. Abutment plate; 14. Spring; 15. Sliding groove; 16. Horizontal groove; 17. Limiting block. Detailed Implementation
[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0035] Example 1: Refer to Figure 1 and Figure 2An M3 nut installation fixture, used in the field of nut installation, includes a handle 1, a first sleeve 2, a second sleeve 3, a third sleeve 4, and a nut sleeve 5. The first sleeve 2 is fixedly installed on the top of the handle 1. Insertion blocks 8 are fixedly installed on the bottom of the nut sleeve 5, the third sleeve 4, and the second sleeve 3. The top of the third sleeve 4, the second sleeve 3, and the first sleeve 2 are all provided with vertical grooves 9. Multiple insertion blocks 8 and multiple vertical grooves 9 are arbitrarily inserted vertically into each other. The top of one side of the third sleeve 4, the second sleeve 3, and the first sleeve 2 are all provided with horizontal grooves 11. The vertical grooves 9 and the horizontal grooves 11 are interconnected. Multiple insertion blocks 8 and multiple horizontal grooves 11 are arbitrarily inserted horizontally into each other. The first sleeve 2 is securely installed on the top of the handle 1 by welding. The bottoms of the nut sleeve 5, the third sleeve 4, and the second sleeve 3 are all integrally formed with insertion blocks 8. The tops of the third sleeve 4, the second sleeve 3, and the first sleeve 2 are all provided with vertical slots 9. In actual use, multiple insertion blocks 8 and multiple vertical slots 9 can be vertically inserted into each other arbitrarily. For example, during assembly, the insertion block 8 at the bottom of the nut sleeve 5 can be vertically inserted into the vertical slot 9 at the top of the first sleeve 2, and the insertion block 8 at the bottom of the third sleeve 4 can also be vertically inserted into the slot 9. 8 is vertically inserted into the vertical groove 9 at the top of the second sleeve 3, etc., to realize the vertical combination connection between different components. At the same time, the top of one side of the third sleeve 4, the second sleeve 3 and the first sleeve 2 are also provided with a horizontal groove 11, and the vertical groove 9 and the horizontal groove 11 are interconnected. Multiple plug-in blocks 8 and multiple horizontal grooves 11 can be arbitrarily plugged into each other horizontally. On the basis of vertical plugging, the plug-in block 8 is horizontally inserted into the horizontal groove 11 to further enhance the connection stability between components, so as to adapt to the requirements of tooling length and structure under different installation scenarios.
[0036] Reference Figure 2 The top of the nut sleeve 5 has two slots 7, which are arranged in a cross-shaped staggered manner to adapt to different spatial environments.
[0037] Reference Figure 4 The bottom of the handle 1 is provided with a sliding groove 15, and a pressing block 12 is slidably connected in the sliding groove 15. A contact plate 13 is fixedly connected to the top of the pressing block 12, and the pressing block 12 extends to the bottom of the handle 1. A spring 14 is fixedly connected to the inner wall of the top of the sliding groove 15, and the bottom end of the spring 14 is fixedly connected to the top of the contact plate 13. When the operator presses the pressing block 12, the contact plate 13 compresses the spring 14, and the pressing block 12 slides downward in the sliding groove 15. When the pressing block 12 is released, the elastic force of the spring 14 will cause the pressing block 12 and the contact plate 13 to return to their original positions. This pressing structure can provide additional operational functions when installing nuts. For example, when it is necessary to press the nut into a specific position, pressing the pressing block 12 generates downward pressure to assist in completing the installation operation.
[0038] Reference Figure 5The handle 1 has a connecting groove 6 on one side of its bottom, which is connected to the sliding groove 15. The pressing block 12 has a transverse groove 16, and a limiting block 17 is fixedly connected to the top inner wall of the transverse groove 16. A through hole 10 is formed in the insertion block 8 at the bottom of the second sleeve 3, and a slot 7 passes laterally through the connecting groove 6 and into the transverse groove 16, while the limiting block 17 is inserted into the through hole 10. By operating the pressing block 12, the slot 7 passes laterally through the connecting groove 6 and into the transverse groove 16, while the limiting block 17 is accurately inserted into the through hole 10. This connection structure not only achieves a secure connection between the handle 1 and the second sleeve 3, but also allows the second sleeve 3 to be removed from the handle 1 simply by operating the pressing block 12 again to remove the limiting block 17 from the through hole 10, facilitating the assembly and disassembly of the tooling.
[0039] Reference Figure 5 The height of the transverse groove 16 is greater than the height of the limiting block 17 and the depth of the through hole 10. When the limiting block 17 is inserted into the through hole 10 to achieve connection, the transverse groove 16 has enough space to ensure that the limiting block 17 is not obstructed by the top or bottom of the transverse groove 16 during the insertion process, and can be smoothly inserted into the appropriate position to ensure the stability and reliability of the connection.
[0040] Example 2: Reference Figure 2 An improvement upon Embodiment 1: The slot 7 consists of a washer slot and a nut slot, with the washer slot having a larger diameter than the nut slot and being interconnected. When installing an M3 nut with a washer, the washer is placed in the washer slot. Due to the larger diameter of the washer slot, it can accommodate the washer well, preventing the washer from moving or misaligning during installation.
[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A fixture for installing an M3 nut, characterized in that, include: The handle (1), the first sleeve (2), the second sleeve (3), the third sleeve (4) and the nut sleeve (5) are provided, with the first sleeve (2) fixed to the top of the handle (1); The bottom of the nut sleeve (5), the third sleeve (4) and the second sleeve (3) are all provided with plug-in blocks (8), and the top of the first sleeve (2), the second sleeve (3) and the third sleeve (4) are all provided with vertical grooves (9). The plug-in blocks (8) are detachably inserted into the vertical grooves (9). The top of the side wall of the first sleeve (2), the second sleeve (3) and the third sleeve (4) are all provided with a horizontal groove (11) that communicates with the vertical groove (9), and the plug-in block (8) can be inserted horizontally into the horizontal groove (11). The top of the nut sleeve (5) is provided with a cross-shaped groove (7), which includes a washer groove and a nut groove that are interconnected. The diameter of the washer groove is larger than that of the nut groove.
2. The M3 nut mounting fixture according to claim 1, characterized in that, The bottom of the handle (1) is provided with a sliding groove (15), and a pressing block (12) is slidably connected in the sliding groove (15). The pressing block (12) is elastically connected to the top of the sliding groove (15) by a spring (14), and the bottom of the pressing block (12) extends to the outside of the handle (1).
3. The M3 nut mounting fixture according to claim 2, characterized in that, The handle (1) has a connecting groove (6) on its side wall that connects to the sliding groove (15). The pressing block (12) has a transverse groove (16) inside. A limiting block (17) is fixed to the top of the transverse groove (16). The insertion block (8) of the second sleeve (3) has a through hole (10). When the insertion block (8) is inserted into the transverse groove (16) through the connecting groove (6), the limiting block (17) is inserted into the through hole (10).
4. The M3 nut mounting fixture according to claim 3, characterized in that, The height of the transverse groove (16) is greater than the sum of the height of the limiting block (17) and the depth of the through hole (10).
5. The M3 nut mounting fixture according to any one of claims 1-4, characterized in that, The third sleeve (4) is horizontally inserted into the transverse groove (11) of the first sleeve (2) through the plug block (8) to form an L-shaped structure.
6. The M3 nut mounting fixture according to claim 5, characterized in that, When the second sleeve (3) is inserted into the vertical groove (9) of the first sleeve (2), its extension direction coincides with the axis of the handle (1).
7. The M3 nut mounting fixture according to claim 3, characterized in that, When the pressing block (12) is pressed, it causes the limiting block (17) to disengage from the through hole (10), so that the second sleeve (3) can be axially pulled away along the connecting groove (6).