Elastic pin convenient to guide

Abstract

The utility model discloses an elastic pin convenient to guide, which comprises an elastic pin body, a hollow cavity is arranged in the elastic pin body, one side of the elastic pin body is provided with a first through groove arranged along the axial direction of the elastic pin body, the first through groove is communicated with the cavity, two ends of the elastic pin body are provided with conical heads, and the conical heads are communicated with the cavity. The elastic pin comprises an elastic pin body, the outer wall of the elastic pin body is further provided with a plurality of guide protruding ribs arranged in the axial direction of the elastic pin body, a gap is formed between every two adjacent guide protruding ribs, and an inner supporting pin is arranged in the elastic pin body. When the elastic pin body is inserted into a pin hole, the guide protruding rib can make contact with the inner wall of the pin hole, the friction force of the elastic pin body entering the pin hole in the axial direction is reduced, insertion is facilitated, the inner supporting pin is arranged in the elastic pin body, the strength of the elastic pin body can be improved, and bending deformation of the elastic pin body is avoided; and the bending resistance and the shearing resistance of the elastic pin body are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pins, and in particular to the technical field of flexible pins that are easy to guide. Background Technology

[0002] A flexible cylindrical pin, also known as a spring pin, is a headless, hollow cylindrical body with an axial groove and chamfered ends. It is used for positioning, connecting, and fixing parts. It needs to possess good elasticity and shear resistance; the outer diameter of this type of pin is slightly larger than the assembly hole diameter. Flexible cylindrical pins are generally formed by coiling, such as the flexible pin for compressors in refrigeration equipment proposed by the applicant on March 28, 2013, publication number […].

[0003] CN203239523U describes a utility model providing a compressor-specific elastic pin for refrigeration equipment. The pin includes a hollow cylindrical body with an axially oriented through groove. The two ends of the elastic pin body are tapered to form narrowed ends. The applicant has discovered certain problems with this elastic pin in practice. The large surface area of ​​the elastic pin results in a large contact area with the pin hole, leading to significant friction and resistance when inserted. This causes the pin to be difficult to insert smoothly and prone to shifting. Furthermore, the single-layer structure of the elastic pin results in low strength, especially on the side with the through groove. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing an easy-to-guide elastic pin that is easy to insert into the pin hole, and has high strength and is not easily bent.

[0005] To achieve the above objectives, this utility model proposes an easily guided elastic pin, comprising an elastic pin body, a hollow chamber within the elastic pin body, and a first through groove arranged axially on one side of the elastic pin body, the first through groove communicating with the chamber. The elastic pin body has tapered heads at both ends, and the outer wall of the elastic pin body is also provided with several guide ribs arranged axially, with gaps between adjacent guide ribs. An inner support pin is provided within the elastic pin body, the inner support pin being hollow, and a second through groove arranged axially on one side of the inner support pin.

[0006] Preferably, the second through groove is located on the side away from the first through groove.

[0007] Preferably, the first through groove has V-shaped openings at both ends near the cone head.

[0008] Preferably, the first through groove is provided with a plurality of interlocking rectangular blocks and rectangular slots on both sides, and the rectangular blocks are respectively disposed in the rectangular slots and can slide back and forth along the rectangular slots.

[0009] Preferably, the outer wall of the inner support pin or the inner wall of the elastic pin body is provided with a polytetrafluoroethylene layer.

[0010] Preferably, the inner support pin is coaxially arranged with the elastic pin body.

[0011] The beneficial effects of this utility model of an easy-to-guide elastic pin are as follows: By providing axially arranged guide ribs on the outer wall of the elastic pin body and setting gaps between the guide ribs, when the elastic pin body is inserted into the pin hole, the guide ribs can contact the inner wall of the pin hole, reducing the frictional force of the elastic pin body entering the pin hole axially, thus facilitating insertion. By setting an inner support pin inside the elastic pin body, the strength of the elastic pin body can be improved, preventing the elastic pin body from bending and deforming, and improving the bending and shear resistance of the elastic pin body.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of a flexible pin that facilitates guidance according to this utility model.

[0014] Figure 2 This is a side view of the structure of a flexible pin that facilitates guidance according to this utility model.

[0015] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0016] Figure 4 yes Figure 1 Schematic diagram of the cross-sectional structure of BB.

[0017] in:

[0018] 1-Elastic pin body; 2-Inner support pin; 3-PTFE layer; 11-First through groove; 12-Conical head; 13-Guide rib; 14-Gap; 21-Second through groove; 111-V-shaped opening; 112-Rectangular insert; 113-Rectangular slot Detailed Implementation

[0019] 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. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0020] In the description of this utility model, it should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0021] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0023] See Figure 1 , Figure 2This utility model discloses a guide-oriented elastic pin, comprising an elastic pin body 1, a hollow cavity within the elastic pin body 1, and a first through groove 11 arranged axially on one side of the elastic pin body 1, the first through groove 11 communicating with the cavity. Conical heads 12 are provided at both ends of the elastic pin body 1, and several guide ribs 13 arranged axially on the outer wall of the elastic pin body 1 are provided, with gaps 14 between adjacent guide ribs 13. In this embodiment, by providing axially arranged guide ribs 13 on the outer wall of the elastic pin body 1 and providing gaps 14 between the guide ribs 13, when the elastic pin body 1 is inserted into a pin hole, the guide ribs 13 can contact the inner wall of the pin hole, reducing the frictional force of the elastic pin body 1 entering the pin hole axially, thus facilitating insertion.

[0024] See Figure 3 , Figure 4 The elastic pin body 1 is provided with an inner support pin 2, which is coaxially arranged with the elastic pin body 1. The inner support pin 2 is hollow inside, and a second through groove 21 is provided on one side of the inner support pin 2. By providing an inner support pin 2 inside the elastic pin body 1, the strength of the elastic pin body 1 can be improved, bending deformation of the elastic pin body 1 can be avoided, and the bending and shearing resistance of the elastic pin body 1 can be improved.

[0025] See Figure 3 The second through groove 21 is located on the side away from the first through groove 11. The staggered arrangement of the first through groove 11 and the second through groove 21 can prevent the first through groove 11 and the second through groove 21 from overlapping and affecting the strength of that side.

[0026] See Figure 1 The first through groove 11 has V-shaped openings 111 at both ends near the cone head 12. Example 2

[0027] See Figure 1 Based on Embodiment 1, several interlocking rectangular inserts 112 and rectangular slots 113 are respectively provided on both sides of the first through groove 11. The rectangular inserts 112 are correspondingly disposed in the rectangular slots 113 and can slide back and forth along the rectangular slots 113. The rectangular inserts 112 and rectangular slots 113 cooperate with each other to play a directional role, limiting the movement direction of both sides of the first through groove 11, so that the two sides of the first through groove 11 can only move relative to each other, and preventing the first through groove 11 from tilting and deforming during the installation of the elastic pin body 1.

[0028] See Figure 3 , Figure 4The outer wall of the inner support pin 2 is provided with a polytetrafluoroethylene (PTFE) layer 3. The PTFE layer 3 can reduce the friction between the inner support pin 2 and the elastic pin body 1, and prevent excessive friction between the elastic pin body 1 and the inner support pin 2 from affecting the normal contraction and deformation of the elastic pin. In another optional embodiment, the PTFE layer 3 can also be provided on the inner wall of the elastic pin body 1.

[0029] The working process of this utility model:

[0030] In the operation of this utility model, when the elastic pin body 1 is inserted into the pin hole, the guide rib 13 can contact the inner wall of the pin hole, and the gap 14 can reduce the contact area between the elastic pin body 1 and the pin hole, thereby reducing the frictional force of the elastic pin body 1 entering the pin hole axially and facilitating insertion. The inner support pin 2 provides axial support force for the elastic pin body 1.

[0031] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The internal components of the electric slide rail, cylinder, welding machine, electric telescopic rod and controller all adopt conventional models in the existing technology, and their internal structure belongs to the existing technology structure. Workers can complete the normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the existing technology, and will not be described in detail here.

[0032] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A guideable elastic pin, comprising an elastic pin body (1), wherein the elastic pin body (1) has a hollow chamber, and a first through groove (11) is provided on one side of the elastic pin body (1) along its axial direction, the first through groove (11) communicating with the chamber, and both ends of the elastic pin body (1) are provided with conical heads (12), characterized in that: The outer wall of the elastic pin body (1) is also provided with a number of guide ribs (13) arranged along its axial direction, and a gap (14) is provided between adjacent guide ribs (13). The elastic pin body (1) is provided with an inner support pin (2). The inner support pin (2) is hollow inside, and a second through groove (21) is provided on one side of the inner support pin (2) arranged along its axial direction.

2. The guide-friendly elastic pin as described in claim 1, characterized in that: The second through groove (21) is located on the side away from the first through groove (11).

3. The guide-friendly elastic pin as described in claim 1, characterized in that: The first through groove (11) has V-shaped openings (111) at both ends near the cone head (12).

4. The guide-friendly elastic pin as described in claim 1, characterized in that: The first through groove (11) has several interlocking rectangular inserts (112) and rectangular slots (113) on both sides. The rectangular inserts (112) are respectively located in the rectangular slots (113) and can slide back and forth along the rectangular slots (113).

5. The guideable elastic pin as described in claim 1, characterized in that: The outer wall of the inner support pin (2) or the inner wall of the elastic pin body (1) is provided with a polytetrafluoroethylene layer (3).

6. The guideable elastic pin as described in claim 1, characterized in that: The inner support pin (2) is coaxially arranged with the elastic pin body (1).

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