A rubber ring fixing mechanism

Abstract

This utility model discloses a rubber ring fixing mechanism, comprising: a wire clamping block with a clamping portion; a rubber ring disposed in the clamping portion; and a positioning member passing through the wire clamping block and the rubber ring. The rubber ring is an elastic body. A tail wire is threaded between the rubber ring and the clamping portion. The rubber ring and the clamping portion are in an interference fit to press and straighten the tail wire, ensuring that the clamping force of the rubber ring on the tail wire is less than a preset pressure value. This rubber ring fixing mechanism, through the wire clamping block, the rubber ring, and the positioning member forming an interference fit system, uses an elastic body. The elastic body's compression deformation generates a constant contact pressure, achieving automatic clamping and straightening of the tail wire, avoiding manual adjustment, and significantly reducing the dispersion of clamping force. Furthermore, by ensuring that the clamping force of the rubber ring on the tail wire is less than the preset pressure value, plastic deformation of the wire is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of precision wire fixing technology, and specifically relates to a rubber ring fixing mechanism. Background Technology

[0002] Existing rubber ring fixing mechanisms are generally of the split type, which has higher investment and operating costs; if a collision occurs during the production process, the split design is prone to deformation and failure; the clamping force of the products is not uniform, with a maximum difference of 75 grams; the tail wire cannot be pressed tightly, which causes the tail wire to bend, resulting in the coil not being able to be placed flat on the fixing fixture. Summary of the Invention

[0003] To address the aforementioned problems, the primary objective of this invention is to provide a rubber ring fixing mechanism to solve the technical problem of low efficiency in manually measuring the clamping force of the tail wire.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: This utility model provides a rubber ring fixing mechanism, including: The cable holder block is equipped with a locking part; A rubber ring is provided at the engaging part; The positioning element is inserted into the cable holder block and the rubber ring; wherein, The rubber ring is an elastomer; The rubber ring and the engaging part are used to thread the tail wire through. The rubber ring and the engaging part are interference fit so that the rubber ring presses and straightens the tail wire, and the pressing force of the rubber ring on the tail wire is less than a preset pressure value.

[0005] An interference fit system is formed by the wire clamping block, rubber ring, and positioning components. The rubber ring is an elastic body; its compression deformation generates constant contact pressure, achieving automatic clamping and straightening of the tail wire, eliminating the need for manual adjustment and significantly reducing clamping force dispersion. By ensuring that the clamping force of the rubber ring on the tail wire is less than a preset pressure value, plastic deformation of the wire is prevented, thus protecting the yield strength of the copper wire.

[0006] Furthermore, it also includes: An adjusting member is connected to the end of the positioning member away from the rubber ring, and the adjusting member abuts against the surface of the wire clamping block away from the rubber ring.

[0007] In the rubber ring fixing mechanism, a dynamic clamping force self-maintaining mechanism is formed through the cooperation of the cable clamping block, rubber ring, positioning component, and adjusting component. By abutting the surface of the cable clamping block with the adjusting component, an axial force closed-loop transmission chain is formed, eliminating the cumulative error of assembly clearance and improving the positioning repeatability accuracy.

[0008] Furthermore, the end of the positioning member away from the rubber ring is provided with a groove; The adjusting component is provided with an opening groove for limiting engagement with the groove.

[0009] The combination of groove and opening slot satisfies the mechanical self-locking principle, enabling tools to be installed without disassembly, greatly reducing operation time, and achieving a 100% success rate in preventing misinstallation.

[0010] Furthermore, the positioning element is a pin structure, and the groove is formed by recessing from the outer peripheral surface of the end of the positioning element away from the rubber ring into the interior of the positioning element; The adjusting component is a retaining spring, which has protrusions. The protrusions are circumferentially spaced within the opening groove and surround to form a limiting part. The limiting part engages with the groove for limiting. The opening slot has an opening for detachment from the groove.

[0011] The grooves in the positioning components and the openings in the retaining rings serve as quick-release interfaces.

[0012] By designing grooves in the pin structure and protrusions in the adjusting element, i.e., the snap ring, circumferential force constraint is achieved, thereby controlling the axial movement within a smaller size range.

[0013] The protrusion of the snap ring and the groove of the pin structure enable "one-click locking" and increase the axial preload.

[0014] Furthermore, the surface roughness of the engagement portion facing the rubber ring and the tail wire is 0.4Ra.

[0015] By setting the surface roughness of the engagement part to 0.4Ra, the friction coefficient is controlled at the microscopic level, resulting in a significant reduction in the surface scratch rate of the tail wire. A hard chrome plating + mirror polishing composite process can be used to achieve the 0.4Ra surface roughness design of the engagement part, thereby improving the stability of the friction coefficient.

[0016] Furthermore, the rubber ring is an O-ring, and the tolerance of the rubber ring is 1.88mm~1.98mm.

[0017] By setting the O-ring tolerance to 1.88mm~1.98mm, and forming a compression ratio of 10%~15% with the gap size, the life of the O-ring is extended by 3 times.

[0018] Furthermore, the engaging portion has a first gap along the thickness direction of the rubber ring, and the size of the first gap ranges from 1.9mm to 2mm.

[0019] By setting the first gap to 1.9mm~2mm and establishing an interference fit of 0.03~0.17mm, the clamping force can be stabilized within the range of 50g~70g.

[0020] The interference fit system formed by this rubber ring fixing mechanism can solve the long-standing contradiction in the industry that "clamping force accuracy and assembly efficiency cannot be achieved simultaneously", improve force stability, reduce assembly time, and reduce the frequency of rubber ring replacement.

[0021] Furthermore, the preset pressure value ranges from 50g to 70g. By setting a pressure value to meet the design requirements of 50g~70g, both the stability of the wire is guaranteed and the creep of the wire is avoided.

[0022] Furthermore, the adjusting member is used to control the movement of the positioning member along the thickness direction of the rubber ring to be less than or equal to 0.1 mm.

[0023] By adjusting the axial movement of the positioning component to be less than or equal to 0.1mm, and through the pre-tightening force of the snap ring and the precision machining design of the pin guide surface, the fluctuation of clamping force under vibration environment is greatly reduced.

[0024] Furthermore, the positioning member passes through the engaging portion and the rubber ring, so that the center of the engaging portion and the center of the rubber ring are coaxially arranged.

[0025] The positioning component is used to ensure the coaxiality of the locking part and the rubber ring, and to control the straightness deviation of the tail wire within a small tolerance range, so as to meet the requirements of high-precision coil winding.

[0026] Compared with the prior art, the beneficial effects of this application are as follows: The rubber ring fixing mechanism includes: a wire clamping block with a locking part; a rubber ring disposed in the locking part; and a positioning element passing through the wire clamping block and the rubber ring; wherein the rubber ring is an elastic body; the rubber ring and the locking part are used for threading the tail wire, and the rubber ring and the locking part are in an interference fit so that the rubber ring presses and straightens the tail wire, and the clamping force of the rubber ring on the tail wire is less than a preset pressure value. This rubber ring fixing mechanism forms an interference fit system through the wire clamping block, the rubber ring, and the positioning element. By making the rubber ring an elastic body, the compression deformation of the elastic body generates a constant contact pressure, realizing automatic clamping and straightening of the tail wire, avoiding manual adjustment, and significantly reducing the dispersion of clamping force. By making the clamping force of the rubber ring on the tail wire less than the preset pressure value, plastic deformation of the wire is prevented, thus protecting the yield strength of the copper wire. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the assembly of a rubber ring fixing mechanism applied to the tail wire of a three-series coil.

[0028] Figure 2 This is a three-dimensional structural diagram of a rubber ring fixing mechanism according to this utility model.

[0029] Figure 3 This is a schematic diagram of the structure of a rubber ring fixing mechanism of this utility model from another angle.

[0030] Figure 4 This is an exploded view of a rubber ring fixing mechanism according to this utility model. In the diagram: 10, cable holder block; 11, locking part; 111, first through hole; 112, second through hole; 20, rubber ring; 21, gap; 30, positioning part; 31, groove; 40, adjusting part; 41, opening groove; 42, protrusion; 43, opening; 1, tail wire. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] To achieve the above objectives, the technical solution of this utility model is as follows: It should be noted that the current technology still has the following problems: 1. Difficulty in controlling traditional clamping force: Manual measurement of tail wire clamping force is inefficient and has a large fluctuation range; 2. Risk of tail wire damage and displacement: Copper tail wires have a high surface scratch rate in traditional fixtures, resulting in large linearity deviations after assembly; 3. Bottleneck in fixture changeover efficiency: The entire fixture needs to be replaced when switching product models on the production line; 4. Insufficient sealing reliability: The O-ring compression amount is discrete due to the accumulation of tolerances in traditional structures; 5. High maintenance costs: Traditional welded fixtures need to be scrapped entirely after damage. Traditional fixtures cannot simultaneously meet the contradictory requirements of "high-precision clamping force" and "rapid changeover".

[0033] To solve the above problem, see Figures 1-4 As shown, this utility model provides a rubber ring fixing mechanism, including: a wire clamping block 10 with a locking part 11; a rubber ring 20 disposed in the locking part 11; and a positioning member 30 passing through the wire clamping block 10 and the rubber ring 20; wherein, the rubber ring 20 is an elastic body; the rubber ring 20 and the locking part 11 are used to pass the tail wire 1 through, and the rubber ring 20 and the locking part 11 are interference fit so that the rubber ring 20 presses and straightens the tail wire 1, and the pressing force of the rubber ring 20 on the tail wire 1 is less than a preset pressure value.

[0034] The clamping block 10, the rubber ring 20, and the positioning element 30 form an interference fit system. The rubber ring 20 is an elastic body. The compression deformation of the elastic body generates a constant contact pressure, realizing automatic clamping and straightening of the tail wire 1, avoiding manual adjustment, and significantly reducing the dispersion of clamping force. By ensuring that the clamping force of the rubber ring 20 on the tail wire 1 is less than the preset pressure value, plastic deformation of the wire is prevented, thus protecting the yield strength of the copper wire.

[0035] It should be noted that the cable holder block 10 is provided with a first through hole 111 and a second channel 112. The first through hole 111 and the second through hole 112 are respectively provided on the upper and lower opposite sides of the engaging part 11. The engaging part 11 is equivalent to the clearance part opened by the cable holder block 10 to accommodate and carry the rubber ring 20. The first through hole 111, the engaging part 11 and the second through hole 112 are connected in sequence.

[0036] Furthermore, the rubber ring fixing mechanism also includes an adjusting member 40, which is connected to the end of the positioning member 30 away from the rubber ring 20, and the adjusting member 40 abuts against the surface of the wire clamping block 10 away from the rubber ring 20.

[0037] In this rubber ring fixing mechanism, a dynamic clamping force self-maintaining mechanism is formed through the cooperation between the wire clamping block 10, the rubber ring 20, the positioning component 30, and the adjusting component 40. By abutting the surface of the adjusting component 40 against the wire clamping block 10, an axial force closed-loop transmission chain is formed, eliminating the cumulative error of assembly clearance and improving the positioning repeatability accuracy.

[0038] Furthermore, the positioning member 30 has a groove 31 at the end away from the rubber ring 20; the adjusting member 40 has an opening groove 41 for limiting and engaging with the groove 31.

[0039] The cooperation between the groove 31 and the opening groove 41 satisfies the mechanical self-locking principle, enabling tools to be installed without disassembly, greatly shortening the operation time, and achieving a 100% success rate in preventing misinstallation.

[0040] Furthermore, the positioning member 30 is a pin structure, with a groove 31 formed by recessing from the outer peripheral surface of the end of the positioning member 30 away from the rubber ring 20 into the positioning member 30; the adjusting member 40 is a retaining spring, which has protrusions 42, which are circumferentially spaced in the opening groove 41 and surround to form a limiting part, which is limited and engaged with the groove 31; the opening groove 41 has an opening 43 for detachment from the groove 31.

[0041] The groove 31 of the positioning component 30 and the opening slot 41 of the retaining spring serve as quick-release interfaces. By designing the groove 31 in the pin structure and the protrusion 42 in the adjusting component 40 (i.e., the retaining spring), circumferentially distributed force constraint is achieved, and the axial movement is controlled within a smaller dimensional range. The protrusion 42 of the retaining spring and the groove 31 of the pin structure enable "one-plug-and-lock," increasing the axial preload.

[0042] Furthermore, the surface roughness of the side of the engaging part 11 facing the rubber ring 20 and the tail wire 1 is 0.4Ra.

[0043] By setting the surface roughness of the engaging part 11 to 0.4Ra, the friction coefficient is controlled at the microscopic level, resulting in a significant reduction in the surface scratch rate of the tail line 1. The surface roughness of the engaging part 11 at 0.4Ra can be achieved using a hard chrome plating + mirror polishing composite process, thereby improving the stability of the friction coefficient.

[0044] Furthermore, the rubber ring 20 is an O-ring, and the tolerance of the rubber ring 20 is 1.88mm~1.98mm.

[0045] By setting the O-ring tolerance to 1.88mm~1.98mm, and using a rubber O-ring to form a 10%~15% compression ratio with the gap size, the lifespan of rubber O-ring 20 can be extended by 3 times.

[0046] Furthermore, the engaging portion 11 has a first gap along the thickness direction of the rubber ring 20, and the size of the first gap ranges from 1.9 mm to 2 mm.

[0047] By setting the first gap to 1.9mm~2mm and establishing an interference fit of 0.03~0.17mm, the clamping force can be stabilized within the range of 40g~60g. This interference fit system, consisting of a rubber ring fixing mechanism, can solve the long-standing contradiction in the industry of "the incompatibility between clamping force accuracy and assembly efficiency," improving force stability, reducing assembly time, and decreasing the frequency of rubber ring replacement.

[0048] Furthermore, the preset pressure value ranges from 40 grams to 60 grams. By setting the pressure value to meet the 40g-60g design, both the fixation reliability and the prevention of wire creep are ensured.

[0049] Furthermore, the positioning element 30 passes through the first through hole 111, the engaging part 11, the second through hole 112, the gap 21 of the rubber ring 20, and the adjusting element 40, to ensure that the center of the engaging part 11 is coaxially aligned with the center of the gap 21 of the rubber ring 20. The positioning element 30 is used to ensure the coaxiality of the engaging part 11 and the rubber ring 20, control the straightness deviation of the tail wire 1 within a small tolerance range, and meet the requirements of high-precision coil winding.

[0050] Furthermore, the movement of the positioning element 30 along the thickness direction of the rubber ring 20 is less than or equal to 0.1 mm. The axial movement of the positioning element 30 is controlled to be less than or equal to 0.1 mm by the adjusting element 40. Through the preload of the snap ring and the precision machining design of the pin guide surface, the fluctuation of clamping force under vibration environment is greatly reduced.

[0051] This application's rubber ring fixing mechanism adopts a split-combination structure design, suitable for clamping the tail wire 1 in special products. This rubber ring fixing mechanism can improve the clamping stability of the tail wire 1. The rubber ring 20 (O-ring) and the wire clamping block 10 ensure clamping force from both above and below. Furthermore, the wire clamping block 10 maintains a roughness of 0.4, ensuring that the tail wire 1 is not easily damaged, loosened, or misaligned, meeting the product's processing requirements. It precisely controls the compression of the O-ring, eliminating the need for repeated tension measurements and reducing manpower and material costs. Currently, the tolerance of the O-ring is 1.88mm~1.98mm, while the clearance of the wire clamping block 10 is controlled at 1.9mm~2mm. Their fit is mainly an interference fit, ensuring that this clearance can compress the O-ring to a certain extent before... When the tail wire 1 is pulled under the O-ring again, it can be pressed tightly to prevent the coil from loosening and falling off. The compression can also be controlled so that the clamping force after the tail wire 1 is pulled into the rubber ring is 50g~70g, meaning the wire clamping block 10 and the rubber ring are in an interference fit relationship. The positioning element 30, i.e., the pin, is mainly used to control the tail wire 1 after it is pulled into the rubber ring 20, i.e., its final position (front and back), and to ensure that the center of the rubber ring 20 and the center of the wire clamping block 10 are coaxial and do not move arbitrarily. The adjusting element 40, i.e., the retaining spring, is mainly used to prevent the positioning element 30, i.e., the pin, from moving up and down, and the up and down movement of the pin does not exceed 0.1mm. This rubber ring fixing mechanism can also improve sealing reliability: precise control of the compression is the foundation for ensuring reliable sealing performance. It avoids leakage caused by insufficient compression due to tolerance accumulation or premature failure caused by excessive compression. Using a 0.2mm tail wire 1 for control greatly increases the probability and consistency of achieving the ideal design compression, thereby directly improving the sealing reliability and lifespan of the product; it ensures that the tail wire 1 of the three-series coils in this special structure is completely straightened to meet the process requirements of the coils being placed flat and precisely on the fixed fixture.

[0052] That is, the rubber ring fixing mechanism, through the interference fit design between the rubber ring 20 and the wire clamping block 10, establishes a self-adjusting force system, solving the problem of low efficiency in manually measuring the clamping force of the tail wire; the surface roughness of the wire clamping block is 0.4Ra, and the roughness is controlled by mirror treatment and three-point tension control, reducing the surface scratch rate of the copper tail wire 1 in traditional fixtures and reducing linearity deviation after assembly; the modular quick-release structure design, through the locking of the positioning part 30 (i.e., the pin) and the adjusting part 40 (i.e., the snap ring), can solve the problem of having to replace the entire fixture when switching product models on the production line; the double tolerance zone nesting design of the rubber ring 20 and the clamping part 11 solves the problem of dispersion of O-ring compression caused by tolerance accumulation in traditional structures.

[0053] Therefore, this rubber ring fixing mechanism can significantly improve the clamping force of the product's tail wire 1 when it is inserted into the positioning component 20. The assembly of the tail wire 1 using this rubber ring fixing mechanism is a modular design, using a standard rubber ring as the rubber ring 20 and a pin structure as the positioning component 30 or fastener, greatly reducing assembly pressure, manufacturing costs, and production cycle. Simultaneously, this rubber ring fixing mechanism can be disassembled and reassembled, facilitating subsequent maintenance and upgrades. The gap of the engaging part 11 is designed based on the tolerance of the rubber ring 20 as a standard O-ring, employing tolerance matching in the design of the rubber ring fixing mechanism. This rubber ring fixing mechanism solves both the efficiency problem during installation and the problem of expending significant manpower and resources to measure the clamping force each time the fixture is changed, thus saving manpower and resources. This rubber ring fixing mechanism can also be linked with other equipment and placed on a positioning fixture for a special product, enabling more efficient production. This rubber ring fixing mechanism can be disassembled after use, allowing components to be reused. This reduces fixture inventory and waste caused by fixture scrapping, thereby lowering production costs and improving labor efficiency. The mechanism can be reused for extended periods. It is particularly suitable for controlling the parallelism of the tail wires of three-series coils, and finite element analysis verifies that the displacement under vibration conditions is extremely small, achieving precise positioning. This mechanism can also be applied to scenarios requiring precision clamping, such as medical catheter fixation and fiber optic splicing.

[0054] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rubber ring fixing mechanism, characterized in that, include: The cable holder block is equipped with a locking part; A rubber ring is installed in the engaging part; The positioning element is inserted into the cable holder block and the rubber ring; wherein, The rubber ring is an elastomer; The rubber ring and the locking part are used to thread the tail wire through. The rubber ring and the locking part are interference fit so that the rubber ring presses and straightens the tail wire, and the pressing force of the rubber ring on the tail wire is less than a preset pressure value.

2. The rubber ring fixing mechanism as described in claim 1, characterized in that, Also includes: Also includes: An adjusting member is connected to the end of the positioning member away from the rubber ring, and the adjusting member abuts against the surface of the wire clamping block away from the rubber ring.

3. The rubber ring fixing mechanism as described in claim 2, characterized in that, The positioning element has a groove at the end away from the rubber ring; The adjusting component is provided with an opening groove for limiting engagement with the groove.

4. The rubber ring fixing mechanism as described in claim 3, characterized in that, The positioning element is a pin structure, and the groove is formed by recessing from the outer peripheral surface of the end of the positioning element away from the rubber ring into the interior of the positioning element. The adjusting component is a retaining spring, which has protrusions. The protrusions are circumferentially spaced within the opening groove and surround to form a limiting part. The limiting part engages with the groove for limiting. The opening slot has an opening for detachment from the groove.

5. The rubber ring fixing mechanism as described in claim 1, characterized in that, The surface roughness of the engagement part facing the rubber ring and the tail wire is 0.4Ra.

6. The rubber ring fixing mechanism as described in claim 1, characterized in that, The rubber ring is an O-ring, and the tolerance of the rubber ring is 1.88mm to 1.98mm.

7. The rubber ring fixing mechanism as described in claim 6, characterized in that, The engaging portion has a first gap along the thickness direction of the rubber ring, and the size of the first gap ranges from 1.9 mm to 2 mm.

8. The rubber ring fixing mechanism as described in claim 1, characterized in that, The preset pressure value ranges from 50g to 70g.

9. The rubber ring fixing mechanism as described in claim 2, characterized in that, The adjusting component is used to control the movement of the positioning component along the thickness direction of the rubber ring to be less than or equal to 0.1 mm.

10. The rubber ring fixing mechanism as described in claim 1, characterized in that, The positioning element passes through the engaging portion and the rubber ring, so that the center of the engaging portion and the center of the rubber ring are coaxially arranged.

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