Narrow and small space assembly tool
By designing assembly fixtures for confined spaces, the problem of traditional fixtures being difficult to assemble in confined spaces is solved. Through the combination of gripping parts, assembly parts and limiting parts, stable installation and separation of components are achieved, improving assembly efficiency and accuracy.
Patent Information
- Application Number
- CN202520188259.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-06
AI Technical Summary
Traditional tooling makes it difficult to assemble and disassemble components in confined spaces, resulting in unstable installation or disassembly, especially in precision instrument manufacturing where assembly space is limited.
A tooling for assembly in confined spaces has been designed, including a gripping part, an assembly part, and a limiting component. The gripping part is adapted to human grip through fixing and adjusting components. The assembly part is sized to match the assembly space. The limiting component is used to fix the position of the adjusting component. Combined with a lighting device, sufficient light is provided to ensure the stability and visibility of the operation.
It enables flexible and stable component installation and disassembly in confined spaces, improving assembly efficiency and accuracy, reducing operational errors caused by space limitations and insufficient lighting, and optimizing the assembly process.
Smart Images

Figure CN223790389U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of production and assembly technology, specifically to an assembly tooling for confined spaces. Background Technology
[0002] With the continuous advancement of modern manufacturing technologies, product structures are becoming increasingly complex and sophisticated, posing numerous challenges to component assembly and maintenance. This is especially true in assembly scenarios with unique spatial structures, where traditional tooling exhibits significant limitations. For instance, in the precision instrument manufacturing industry, components are often situated in compact, confined spaces. This means that traditional tooling, due to its large size, is ill-suited for these limited spaces during assembly and separation, making it difficult to smoothly insert or remove components. Therefore, there is an urgent need for assembly tooling specifically designed for installing and separating components within confined assembly spaces. Utility Model Content
[0003] In view of this, this application provides a confined space assembly fixture for installing and separating components within a confined assembly space. The specific solution is as follows:
[0004] A confined space assembly fixture, the assembly fixture comprising:
[0005] The gripping part includes a fixing member and an adjusting member;
[0006] The size of the fixing component matches the size of the human hand; the adjusting component is located on opposite sides of the fixing component, and one end of the adjusting component is installed on the outer side of the bottom end of the fixing component, together with the fixing component to realize the adjustment of the human hand grip size;
[0007] An assembly part, the top of which is detachably connected to the bottom of the fastener, the bottom of which is detachably connected to the part to be assembled, and the dimensions of which match the dimensions of the assembly space;
[0008] The limiting component is located at the connection between the adjusting component and the fixing component. After the adjusting component is rotated to the appropriate position, the adjusting component is fixed.
[0009] Preferably, a connector is provided at the bottom of the fixing member;
[0010] One end of the connector is connected to the fixing member, and the other end of the connector is detachably connected to the assembly part.
[0011] Preferably, at least one set of vertical mounting grooves are provided on opposite sides of the fastener;
[0012] The top of the vertical mounting slot is connected to the outside.
[0013] One end of the adjusting member is movably connected to the inner side of the vertical mounting groove near the bottom end, and rotates along the connection point to allow the adjusting member to be inserted vertically into the vertical mounting groove, or inserted perpendicularly into the vertical mounting groove.
[0014] Preferably, the adjusting component and the vertical mounting groove are equipped with a rotating rod;
[0015] The rotating rod passes through the adjusting component, and the two ends of the rotating rod are respectively rotatably connected to the two groove walls of the vertical mounting groove;
[0016] The limiting component is detachably connected to the connection between the rotating rod and the vertical mounting groove.
[0017] Preferably, the limiting member includes a limiting hole and a limiting post;
[0018] The limiting holes include a plurality of first limiting holes provided at the connection between the rotating rod and the vertical mounting groove, and second limiting holes provided on the groove walls on both sides of the vertical mounting groove corresponding to the first limiting holes;
[0019] The limiting posts pass through the corresponding first limiting hole and second limiting hole respectively, thereby fixing the adjusting component.
[0020] Preferably, the outer surfaces of both the fixing member and the adjusting member are rounded.
[0021] Preferably, the connector is provided with a lighting fixture;
[0022] The lighting part of the lighting fixture is ring-shaped and installed at the bottom of the connector. The control circuit of the lighting fixture is embedded in the fixing part, and the switch of the lighting fixture is located at the center of the top outer side of the fixing part.
[0023] Preferably, the adjusting element is a telescopic rod.
[0024] The beneficial effects of this application are as follows:
[0025] This application effectively solves the problem that traditional tooling is difficult to access components in the compact space of precision instruments by setting the size of the assembly part to match the size of the assembly space, thereby reducing assembly obstacles caused by space limitations. It also avoids the problem that traditional tooling is too large to be used in these confined spaces, making it difficult to smoothly install or remove components from the assembly space. The adjustment mechanism in this application can flexibly switch between horizontal and vertical positions and be firmly fixed, allowing operators to adjust the tooling shape and grip comfort as needed.
[0026] The fixing component in this application is designed according to the size of the human palm, and combined with the adjusting component, the grip size can be precisely adjusted to ensure stable force application during operation;
[0027] This application utilizes a luminaire with a ring-shaped lighting section at the bottom of the connector. Its control circuit and switch design are well-thought-out, providing ample light even in dimly lit, confined assembly environments. Operators can clearly observe assembly details, reducing operational errors caused by limited vision. Compared to traditional tooling used in poorly lit environments, this significantly improves assembly efficiency and accuracy, optimizing the assembly process. Attached Figure Description
[0028] Figure 1 This is a schematic diagram of the structure of an assembly tooling in a confined space when the adjustable parts are fully retracted.
[0029] Figure 2 A schematic diagram of a structural design for inserting an adjusting component into a vertical mounting slot in a confined space assembly fixture;
[0030] Figure 3 A schematic diagram of a vertical mounting slot for an adjusting component in a confined space assembly fixture.
[0031] Figure 4 A bottom-view axonometric schematic diagram of an assembly tooling in a confined space;
[0032] Figure 5 This is a schematic diagram of the installation of adjusting components in a tooling assembly in a confined space.
[0033] Figure 6 This is a schematic diagram of the actual use of an assembly tooling in a confined space according to this application;
[0034] In the diagram: 1. Assembly part; 2. Connector; 3. Fixing part; 4. Adjusting part; 5. Switch; 6. Limiting post; 7. Second internal thread; 8. Rotating rod; 9. Lighting part. Detailed Implementation
[0035] As attached Figure 1-5 The illustration shows an assembly fixture for confined spaces. It includes a gripping part and an assembly part 1 arranged vertically.
[0036] The gripping part includes a fixing member 3 and adjusting members 4 disposed on opposite sides of the fixing member 3;
[0037] The limiting component is located at the connection between the adjusting component and the fixing component. After the adjusting component is rotated to the appropriate position, the adjusting component is fixed.
[0038] The fixing member 3 is generally block-shaped, and its overall size is consistent with the size of a person's palm when they hold it tightly. A connector 2 is provided at the bottom of the fixing member 3. One end of the connector 2 is fixedly connected to the bottom of the fixing member 3 and is integrally formed with the fixing member 3. The other end of the connector 2 is provided with a first internal thread. At least one set of vertical mounting slots is provided on opposite sides of the fixing member 3 (two sets are provided in one embodiment of this application, i.e., four vertical mounting slots). The top of the vertical mounting slots is connected to the outside.
[0039] One end of the adjusting member is movably connected to the inner side of the vertical mounting groove near the bottom end and rotates along the connection point to realize that the adjusting member is vertically inserted into the vertical mounting groove or perpendicularly inserted into the vertical mounting groove. One end of the adjusting member 4 is rotatably connected to the position of the vertical mounting groove near the bottom end through the rotating rod 8. In one embodiment of this application, the rotating rod 8 passes through the two adjusting members 4 located on the same side of the fixing member 3 and the groove wall shared by the two adjacent vertical mounting grooves. The two ends of the rotating rod 8 are rotatably connected to the two opposite groove walls of the two adjacent vertical mounting grooves.
[0040] The adjusting component 4 is fixedly connected to the rotating rod 8. The adjusting component 4 rotates along the axis of the rotating rod 8 to realize that the adjusting component 4 is vertically stored in the vertical mounting slot or perpendicular to the vertical mounting slot for use as an assembly tool.
[0041] The overall dimensions of the assembly part 1 match the dimensions of the assembly space (i.e., the length and cross-section of the assembly part match the depth and cross-section of the assembly space, respectively). In actual design, the length of the entire assembly part 1 is greater than the depth of the assembly space, while the cross-section of the assembly part 1 is slightly smaller than the cross-section of the assembly space. The top of the assembly part 1 is provided with an external thread that matches the first internal thread, so as to realize the detachable connection between the assembly part 1 and the end of the connector 2 facing away from the fixing member 3 by means of screwing.
[0042] In this application, in order to avoid the assembly tool scratching the human body and to improve the comfort of use, the outer surfaces of the fixing part 3 and the adjusting part 4 are both rounded.
[0043] In this application, the connector 2 is a hollow cylindrical structure, the top of the assembly part 1 is cylindrical, and the bottom matches the shape of the assembly (in one embodiment of this application, since the top of the assembly is externally threaded, the bottom of the assembly part 1 is set as a second internal thread 7). The outer diameter of the top of the assembly part 1 matches the inner diameter of the connector 2. The inner side of the connector 2 is provided with a first internal thread, and the outer side of the top of the assembly part 1 is provided with an external thread that matches the first internal thread.
[0044] In this application, in order to improve the lighting during assembly, a lighting fixture is provided on the connector 2. The lighting part 9 of the lighting fixture is ring-shaped and installed at the bottom end of the connector 2. The control circuit of the lighting fixture is embedded in the fixing part 3. The switch 5 of the lighting fixture is located at the center of the top of the fixing part 3. The control circuit is connected to the switch 5 and the lighting part 9 respectively through wires. The wires connecting the control circuit and the lighting part 9 are embedded in the connector 2, and the wires connecting the control circuit and the switch 5 are embedded in the fixing part 3.
[0045] In this application, in order to accommodate the assembly habits of different people, the adjusting component 4 is set as a telescopic rod.
[0046] In this application, the adjusting member 4 is fixed by a limiting member, which includes a limiting hole and a limiting post 6;
[0047] The limiting holes include a plurality of first limiting holes provided at the connection between the rotating rod and the vertical mounting groove, and second limiting holes provided on the groove walls on both sides of the vertical mounting groove corresponding to the first limiting holes;
[0048] The limiting holes include a plurality of first limiting holes respectively provided on the rotating rod 8 that drives the adjustment component to rotate, and a second limiting hole corresponding to the first limiting holes provided on one side of the fixing component 3 that is provided with a vertical mounting groove; the second limiting holes are located on the groove walls on both sides of the vertical mounting groove, and the plurality of limiting holes are respectively arranged in a ring along the radial direction of the rotating rod 8.
[0049] The limiting post 6 passes through the corresponding first limiting hole and second limiting hole respectively to fix the adjusting member 4.
[0050] The specific implementation steps are as follows:
[0051] First, determine whether to use one or two devices based on the size of the assembly or disassembly to be assembled or separated; for long and narrow assemblies, use two devices.
[0052] First, determine the size and shape of the fastener based on the size of the human hand to ensure a comfortable grip.
[0053] Two vertical mounting slots are provided on each of the opposite sides of the fastener, and the top of each set of mounting slots is connected to the outside for installing the adjusting component. A connector is integrally formed at the bottom of the fastener. The connector is a hollow cylindrical structure with a first internal thread at one end for connecting with the assembly part.
[0054] For the adjusting components, prepare four rod-shaped parts of the same specifications. One end of each adjusting component is rotatably connected to the inner side of the vertical mounting groove near the bottom via a rotating rod 8. Several first limiting holes are symmetrically arranged in a radial ring on the rotating rod, and second limiting holes corresponding to the first limiting holes are arranged on the groove walls on both sides of the vertical mounting groove.
[0055] The limiting posts pass through the corresponding first and second limiting holes respectively, allowing the adjusting component to be fixed in both horizontal and vertical positions. Note: The outer diameter of the limiting post is adapted to the diameter of the first and second limiting holes, and the length of the limiting post is more than twice the distance between the corresponding dimensions of the first and second limiting holes; the outer surface of the adjusting component is rounded to avoid scratching the user, and it can be configured as a telescopic rod to accommodate different people's assembly habits.
[0056] Next, preparations are made for the assembly section:
[0057] The overall dimensions of the assembly section are designed such that its length is greater than the depth of the assembly space, and its cross-section is slightly smaller than the cross-section of the assembly space. An external thread is machined at the top of the assembly section to match the first internal thread on the connector, allowing for a detachable connection with the gripping part. A second internal thread is machined at the bottom of the assembly section for threaded connection with the parts to be assembled. The entire assembly section is a single, integral unit.
[0058] Next, proceed with assembly:
[0059] The four adjusting components are installed into the vertical mounting slots on both sides of the fixing component, and connected and fixed in position by rotating rods, limiting holes and limiting posts to ensure that the adjusting components can rotate flexibly and be fixed.
[0060] Connect the external thread on the top of the assembly part to the first internal thread of the gripping part connector, and tighten to the appropriate degree to achieve a reliable connection between the assembly part and the gripping part.
[0061] Inspection and debugging:
[0062] Check whether the connections of each component of the assembly tooling are secure, whether the adjustment parts rotate smoothly, and whether the limit pins are reliably fixed.
[0063] Inspect the second internal thread at the bottom of the assembly section to ensure that the thread is undamaged and free of foreign objects, and can be properly threaded to the parts to be assembled.
[0064] In actual manufacturing, since the components need to be assembled in a cylindrical shell with a depth of 70mm, the adjusting parts of this tooling are placed horizontally on both sides of the fixed parts, so that the entire tooling is in a "T" shape. Its general structure is shown in the attached figure. Figure 6As shown, the handle is formed by a T-shaped crossbeam for both the fixing and adjusting parts. The height of the assembly is greater than 80mm and the outer diameter is less than 20mm, allowing it to sink to a depth of 80mm in a narrow space of only 20mm. In use, hold one piece in each hand, turn on the lighting unit via the switch, align the bottom of the assembly with the accessory, then align the internal thread at the bottom of the assembly with the mounting screw of the accessory. Tighten the fixture onto the screw by rotating it. Simultaneously pulling up or down with both hands allows for smooth and safe separation or installation of the component into the assembly.
[0065] After use, the adjustment part is retracted and vertically inserted into the vertical mounting slot. At the same time, the assembly part and the fastener can be removed for easy storage of this tooling.
[0066] Furthermore, when installing different components, the shape of the bottom of the assembly part can be changed to facilitate the installation and separation of different components. For example, if the top of a component is shaped like a quincunx, the inner side of the bottom of the assembly part can be set to a matching quincunx shape.
Claims
1. A tight space assembly tool characterized by, The assembly tool comprises: a holding part comprising a fixing member and an adjusting member; the fixing member is sized to match the size of the palm of a human hand; the adjusting member is located on opposite sides of the fixing member, and one end of the adjusting member is mounted on the outside of the bottom end of the fixing member to adjust the size of the human hand together with the fixing member; an assembly part, the top of which is detachably connected to the bottom of the fixing member, the bottom of which is detachably connected to the part to be assembled, and the size of the assembly part matches the size of the assembly space; 2. The assembly tool for a narrow space according to claim 1, wherein a limiting member located at the connection between the adjusting member and the fixing member. The bottom of the fixing member is provided with a connecting member; 3. The assembly tool for a tight space according to claim 2, wherein one end of the connecting member is connected to the fixing member, and the other end of the connecting member is detachably connected to the assembly part. At least a group of vertical installation grooves is opened on the opposite sides of the fixing member; the top end of the vertical installation groove is in communication with the outside world; 4. The assembly tool for a tight space according to claim 3, wherein one end of the adjusting member is movably connected to the inside of the bottom end of the vertical installation groove, and rotates along the connection to realize vertical insertion of the adjusting member into the vertical installation groove or vertical insertion of the adjusting member into the vertical installation groove. A rotating rod is arranged between the adjusting member and the vertical installation groove; the rotating rod penetrates the adjusting member, and both ends of the rotating rod are movably connected to the two groove walls of the vertical installation groove; 5. The assembly tool for a tight space according to claim 4, wherein the limiting member is detachably connected to the connection between the rotating rod and the vertical installation groove. The limiting member comprises a limiting hole and a limiting column; the limiting hole comprises a plurality of first limiting holes arranged at the connection between the rotating rod and the vertical installation groove, and a plurality of second limiting holes arranged on the groove walls on both sides of the vertical installation groove corresponding to the first limiting holes; 6. The assembly tool for a tight space according to claim 1, wherein the limiting column penetrates the corresponding first limiting hole and second limiting hole respectively, thereby fixing the adjusting member.
7. The assembly tool for a tight space according to claim 2, wherein The outer surfaces of the fixing member and the adjusting member are both chamfered. The connecting member is provided with a lighting fixture; 8. The assembly tool for a tight space according to claim 1, wherein the lighting part of the lighting fixture is annular, mounted at the bottom end of the connecting member, the control circuit of the lighting fixture is embedded in the fixing member, and the switch of the lighting fixture is located at the center of the top outside of the fixing member. The adjusting member is a telescopic rod.