Positioning pin shaft of supporting spring

Abstract

The utility model discloses a positioning pin shaft for supporting a spring, which belongs to the technical field of spring installation, and comprises a base, an inner diameter guide bearing is arranged on the upper surface of the base, a counter bore is arranged in the inner diameter guide bearing, the inner diameter guide bearing comprises an upper inner diameter guide bearing and a lower inner diameter guide bearing, and the upper inner diameter guide bearing and the lower inner diameter guide bearing are arranged on the base. The upper inner diameter guide bearing is in sliding connection with the lower inner diameter guide bearing through a sliding assembly, a limiting ring is arranged on the outer wall of the lower inner diameter guide bearing, and a notch is formed in one side of the limiting ring; according to the device, the stress concentration phenomenon caused by areas such as acute angles or notches is effectively avoided, and more uniform support is provided for the spring; excessive compression and transverse bending of the spring are effectively prevented, and the service life of the spring is further prolonged. According to the utility model, the long-term reliability of the positioning pin shaft is ensured while the smoothness of the movement of the spring is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of spring installation, in particular to a positioning pin shaft for supporting a spring. Background Art

[0002] With the development of industry, springs are increasingly used in the manufacturing industry. The main function of springs is to reduce shock and buffer. In many cases, due to uneven force, the spring will be displaced in the vertical direction of the force direction, affecting normal use and even causing damage to the machine. In the prior art, a positioning pin is often added to the support spring.

[0003] For example, in the utility model patent with publication number CN214560183U and patent name "A locating pin for a support spring", a locating pin for a support spring is provided, which can achieve end limit of the spring. However, this type of locating pin will cause stress concentration in the spring limit area and cannot effectively prevent overload damage and lateral bending of the spring, which has limitations.

[0004] These problems not only affect the performance and reliability of the spring locating pin, but also increase the maintenance cost and frequency.

[0005] Therefore, it is necessary to develop a new type of locating pin shaft for supporting the spring to avoid overload damage, lateral bending and stress concentration areas of the spring, and improve the stability and durability of the spring. Utility Model Content

[0006] The utility model aims to provide a positioning pin shaft for supporting a spring, wherein a sliding assembly is arranged between an upper inner diameter guide bearing and a lower inner diameter guide bearing so that the inner diameter guide bearing can slide following the compression of the spring, and the excessive compression of the spring is effectively prevented by the minimum limit of the sliding assembly; the contact area and the force-bearing area between the bottom surface of the spring and the base or the limiting ring are significantly increased by the cooperation between the limiting ring and the notch, and the stress concentration phenomenon caused by areas such as sharp angles or notches is effectively avoided.

[0007] To achieve the above-mentioned purpose, the utility model provides a positioning pin shaft for supporting a spring, comprising a base, an inner diameter guide is arranged on the upper surface of the base, a countersunk hole is arranged inside the inner diameter guide, the inner diameter guide comprises an upper inner diameter guide and a lower inner diameter guide, the upper inner diameter guide is slidably connected to the lower inner diameter guide through a group of sliding components, a limiting ring is arranged on the outer wall of the lower inner diameter guide, and a notch is arranged on one side of the limiting ring.

[0008] Preferably, a first groove is symmetrically provided at the bottom of the upper inner diameter guide, and a second groove corresponding to the position of the first groove is provided on the lower inner diameter guide.

[0009] Preferably, the sliding assembly includes a spring, a sliding rod and a sliding block arranged at the bottom end of the sliding rod, the top end of the spring is connected to the bottom of the first groove, the bottom end of the spring is connected to the bottom of the second groove, and the sliding rod is connected to the outside of the first groove.

[0010] Preferably, the setting position of the slide rail corresponds to the position of the slide rod, and the slide rod and the slide block are both slidably connected to the slide rail.

[0011] Preferably, a snap-in groove is provided on the lower surface of the base, and the snap-in groove is communicated with the countersunk hole.

[0012] Preferably, the lower inner diameter guide, the limiting ring and the base are arranged as an integral structure.

[0013] Therefore, the utility model adopts a positioning pin shaft of a supporting spring with the above structure, which has the following beneficial effects:

[0014] (1) By arranging a sliding assembly between the upper and lower inner diameter guides, the inner diameter guide can slide along with the compression of the spring. By setting the minimum limit of the sliding assembly, the spring can be prevented from being damaged or failed due to excessive compression, thereby extending the service life of the spring. At the same time, the notch opened on the outer wall of the inner diameter guide is small, ensuring that the outer wall of the inner diameter guide can effectively restrain the spring laterally.

[0015] (2) Through the cooperation between the limiting ring and the notch, the contact area and force-bearing area between the bottom surface of the spring and the base or the limiting ring are significantly increased, effectively avoiding the stress concentration phenomenon caused by sharp angles or notches, providing more uniform support for the spring, thereby significantly improving the stability and durability of the spring.

[0016] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a positioning pin shaft supporting a spring of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a sliding assembly of a positioning pin shaft supporting a spring of the utility model;

[0019] Figure 3 This is a schematic diagram of the upper inner diameter guide structure of a positioning pin shaft supporting a spring of the utility model;

[0020] Figure 4 This is a schematic diagram of the lower inner diameter guide structure of a positioning pin shaft supporting a spring of the utility model;

[0021] Among them, 1. base; 2. inner diameter guide; 21. upper inner diameter guide; 211. first groove; 22. lower inner diameter guide; 221. second groove; 222. slide rail; 223. limit ring; 224. notch; 3. sliding assembly; 31. spring; 32. slide rod; 33. slider; 4. countersunk hole; 5. snap-in groove. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Example

[0025] like Figure 1-Figure 4 As shown, the utility model adopts a positioning pin shaft of a support spring with the above structure, including a base 1, and an inner diameter guide 2 is arranged on the upper surface of the base 1. The inner diameter guide 2 is used to ensure that the support spring maintains a stable position and a correct movement direction when subjected to force, so as to avoid unnecessary displacement or deflection of the support spring. The inner diameter guide 2 includes an upper inner diameter guide 21 and a lower inner diameter guide 22. The upper inner diameter guide 21 is slidably connected to the lower inner diameter guide 22 through a group of sliding components 3. When the support spring is compressed, the upper inner diameter guide 21 can slide downward following the compression of the support spring, ensuring that the support spring can be supported and constrained by the inner diameter guide 2 in any compression state, preventing the support spring from lateral bending, thereby improving the service life of the support spring.

[0026] A first groove 211 is symmetrically formed at the bottom of the upper inner diameter guide 21 , and a second groove 221 corresponding to the position of the first groove 211 is formed on the lower inner diameter guide 22 .

[0027] The sliding assembly 3 is symmetrically arranged, including a spring 31, a sliding rod 32 and a slider 33 arranged at the bottom of the sliding rod 32. The top end of the spring 31 is welded to the bottom of the first groove 211, and the bottom end of the spring 31 is welded to the bottom of the second groove 221. In the initial state, the spring 31 extends to drive the upper inner diameter guide 21 to slide upward through the cooperation of the slide rail 222 and the slider 33, offsetting the influence of the weight of the upper inner diameter guide 21. The sliding rod 32 is connected to the bottom of the outer wall of the first groove 211. The sliding rod 32, the slider 33 and the upper inner diameter guide 21 can be set as an integrated structure. In addition to being used for sliding connection, the slide rod 32 also cooperates with the slide rail 222 to prevent the upper and lower inner diameter guides 22 from disengaging. The lowest limit of the slide rod 32 and the slide rail 222 is the maximum compression position of the support spring, which effectively prevents excessive compression of the support spring and further extends the service life of the support spring. From the overall structure of the sliding assembly 3, in addition to ensuring the connection and support of the upper and lower inner diameter guides 22, the sliding assembly 3 has a small gap on the outer wall of the inner diameter guide 2, which ensures that the outer wall of the inner diameter guide 2 can effectively laterally constrain the support spring.

[0028] The lower inner diameter guide 22 includes a slide rail 222, and the setting position of the slide rail 222 corresponds to the setting position of the slide rod 32 and the slider 33. The slide rod 32 and the slider 33 are both slidably connected to the slide rail 222. A limiting ring 223 is provided on the outer wall of the lower inner diameter guide 22, and a notch 224 is provided on one side of the limiting ring 223. The notch 224 is used to screw in the support spring. Through the cooperation between the limiting ring 223 and the notch 224, the contact area and force area between the bottom surface of the support spring and the base 1 or the limiting ring 223 are significantly increased, which effectively avoids the stress concentration phenomenon caused by sharp angles or notches, and provides more uniform support for the movement of the support spring, thereby significantly improving the stability and durability of the support spring.

[0029] A countersunk hole 4 is arranged inside the inner diameter guide 2, and the countersunk hole 4 is used to reduce the structural mass. A snap-in groove 5 is arranged on the lower surface of the base 1, and the snap-in groove 5 is connected with the countersunk hole 4, and the snap-in groove 5 is used to achieve positioning through a connecting pin.

[0030] The lower inner diameter guide 22, the limiting ring 223 and the base 1 are configured as an integrated structure.

[0031] During assembly, first install the support spring buckle on the inner diameter guide 2, and then screw the bottom end of the support spring into the slot 224 to complete the installation.

[0032] Therefore, the utility model adopts a positioning pin shaft of the above-mentioned structure to support the spring. By setting a sliding component between the upper and lower inner diameter guides, the inner diameter guide bearing can slide along with the compression of the spring. At the same time, the notch opened on the outer wall of the lower inner diameter guide bearing is small, ensuring that the outer wall of the inner diameter guide bearing can effectively restrain the spring laterally. Through the cooperation of the limiting ring and the notch, the device significantly increases the contact area and force area between the bottom surface of the spring and the base or the limiting ring, effectively avoiding the stress concentration phenomenon caused by the sharp angle or notch, providing more uniform support for the spring, thereby significantly improving the stability and durability of the spring. Through the minimum limit of the sliding component, the excessive compression of the spring is effectively prevented, further extending the service life of the spring. While ensuring the smoothness of the spring movement, the utility model also ensures the long-term reliability of the positioning pin shaft.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A positioning pin shaft supporting a spring, characterized in that: It includes a base, an inner diameter guide is arranged on the upper surface of the base, a countersunk hole is arranged inside the inner diameter guide, the inner diameter guide includes an upper inner diameter guide and a lower inner diameter guide, the upper inner diameter guide is slidably connected to the lower inner diameter guide through a group of sliding components, a limiting ring is arranged on the outer wall of the lower inner diameter guide, and a notch is arranged on one side of the limiting ring.

2. A positioning pin shaft for supporting a spring according to claim 1, characterized in that: The bottom of the upper inner diameter guide is symmetrically provided with a first groove, and the lower inner diameter guide is provided with a second groove corresponding to the position of the first groove.

3. A positioning pin shaft for supporting a spring according to claim 2, characterized in that: The sliding assembly is symmetrically arranged, and the sliding assembly includes a spring, a sliding rod and a sliding block arranged at the bottom end of the sliding rod. The top end of the spring is connected to the bottom of the first groove, the bottom end of the spring is connected to the bottom of the second groove, and the sliding rod is connected to the outside of the first groove.

4. A positioning pin shaft for supporting a spring according to claim 3, characterized in that: The lower inner diameter guide includes a slide rail, the setting position of the slide rail corresponds to the position of the slide rod, and the slide rod and the slide block are both slidably connected to the slide rail.

5. The positioning pin shaft of the supporting spring according to claim 1, characterized in that: A clamping groove is provided on the lower surface of the base, and the clamping groove is communicated with the countersunk hole.

6. A positioning pin shaft for supporting a spring according to claim 1, characterized in that: The lower inner diameter guide, the limiting ring and the base are configured as an integral structure.

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