Elastic shockproof pin

Abstract

The utility model discloses an elastic anti -seismic contact pin, including needle head and needle tail, the needle tail sets in needle head one end, the needle head middle part is equipped with needle core, and the needle core outside is wrapped with elastic joint cover, and the needle tail lower section is equipped with spring steel, the both ends outside of needle core is equipped with the locating groove, the elastic joint cover upper and lower both ends are equipped with the locating ring, the elastic joint cover middle part is equipped with the mounting hole, and the elastic joint cover outer surface is equipped with a plurality of buffer convex points, the utility model discloses a plurality of buffer convex points are equipped with in elastic joint cover outer surface, when the contact pin is received the vibration, and buffer convex point can take place the elastic deformation, and the shock energy is absorbed, the spiral spring steel of needle tail lower section setting can play the very good shock attenuation effect when the contact pin is received the vibration, and the limiting ring of spring steel upper end and the base of lower end limit the activity range of spring steel, make it when received the vibration can contract and expand in a certain range.

Description

TECHNICAL FIELD

[0001] The utility model relates to an elastic anti-vibration pin. BACKGROUND

[0002] The pin is a metal needle structure used for connecting electronic components and circuit boards or other components, and is an important component for realizing electrical connection and mechanical fixation in electronic equipment. The pin is usually composed of a pin body and a pin tail. The pin body is an elongated metal rod, and its material is generally copper or copper alloy. The pin tail is used for connecting electronic components or circuit boards, and is classified into signal transmission pins, power supply pins, ground pins, etc. according to functions.

[0003] Traditional electronic component pins are usually rigid structures. When the equipment is subjected to vibration or impact, the rigid pins cannot effectively buffer the impact force caused by vibration, and the vibration energy directly acts on the welding points or interfaces of the pin and the connecting part, resulting in loosening of the connection, poor contact, or even breakage.

[0004] Therefore, it is necessary to invent an elastic anti-vibration pin to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] (I) Utility model purpose

[0006] To solve the technical problems existing in the background art, the utility model provides an elastic anti-vibration pin, which can reduce the possibility of damage caused by vibration.

[0007] (II) Technical scheme

[0008] In order to achieve the above purpose, the utility model provides the following technical scheme: an elastic anti-vibration pin, comprising a needle head and a pin tail, the pin tail is arranged at one end of the needle head, a needle core is arranged in the middle of the needle head, an elastic joint sleeve is wrapped outside the needle core, and a spring steel is arranged in the lower segment of the pin tail.

[0009] The needle head is a multi-stage pin body, the needle core is arranged in the middle of the bottom pin body, positioning grooves are arranged on the outer sides of both ends of the needle core, and the elastic joint sleeve is matched and installed in the positioning grooves.

[0010] Positioning rings matched with the positioning grooves are arranged on the upper and lower ends of the elastic joint sleeve, an installation hole is arranged in the middle of the elastic joint sleeve, the installation hole is matched with the needle core, and a plurality of buffer protrusions are arranged on the outer surface of the elastic joint sleeve.

[0011] Preferably, the overall size of the elastic joint sleeve is consistent with the size of the bottom pin body of the needle head, that is, the outer diameter of the elastic joint sleeve is matched with the outer diameter of the bottom pin body of the needle head, a plurality of grooves are arranged on the outer surface of the elastic joint sleeve, a plurality of buffer protrusions are arranged in the grooves, and the grooves are uniformly arranged.

[0012] Preferably, the vertex of the buffer convex point does not exceed the groove body outside the groove.

[0013] Preferably, the vertex of the needle head top needle body is arc-shaped, and the surrounding needle body connecting surface is a slope, and the cross-sectional size of the multi-stage needle body of the needle head gradually decreases from bottom to top.

[0014] Preferably, the spring steel is arranged in the lower section of the needle tail, and the spring steel is helical, and the upper end of the spring steel is located on the outer surface of the needle tail and is further provided with a limiting ring, and the lower end of the spring steel is further provided with a base.

[0015] Preferably, the overall size of the spring steel does not exceed the overall size of the needle tail, and the cross-sectional size of the needle tail is greater than the cross-sectional size of the needle head.

[0016] Compared with the prior art, the beneficial effects of the above technical scheme of the utility model are:

[0017] 1. In the utility model, the outer surface of the elastic joint sleeve is provided with a plurality of buffer convex points, which can be elastically deformed when the pin is vibrated, absorb the vibration energy, reduce the influence of vibration on the needle core and the whole pin connection, and the connecting mode of the matching installation of the positioning ring and the positioning groove ensures that the elastic joint sleeve can effectively protect the needle core during vibration;

[0018] 2. In the utility model, the helical spring steel arranged in the lower section of the needle tail can play a good damping effect when the pin is vibrated, the limiting ring at the upper end of the spring steel and the base at the lower end limit the movement range of the spring steel, so that it can stretch and contract within a certain range when it is vibrated, avoid the vibration directly transmitted to the connecting part of the pin and the socket, and ensure the stability of the electrical connection. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments or prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0020] Figure 1 It is the overall structure schematic view of the utility model;

[0021] Figure 2 It is the overall structure split schematic view of the utility model;

[0022] Figure 3 It is the overall structure schematic view of the elastic joint sleeve of the utility model.

[0023] Explanation of reference signs:

[0024] 1, needle; 11, needle core; 12, positioning groove; 2, needle tail; 21, spring steel; 22, limiting ring; 23, base; 3, elastic joint sleeve; 31, positioning ring; 32, mounting hole; 33, buffer convex point; 34, groove. DETAILED DESCRIPTION

[0025] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be introduced in further detail below with reference to the drawings.

[0026] The utility model provides a kind of elastic shock resistance insertion pin as Figures 1-3 As shown in the figure, it includes needle 1 and needle tail 2, needle tail 2 is arranged at one end of needle 1, and needle core 11 is arranged at the middle part of needle 1, and elastic joint sleeve 3 is wrapped outside needle core 11, and spring steel 21 is arranged at the lower segment of needle tail 2;

[0027] Specifically, needle 1 is a multistage needle body, needle core 11 is arranged at the middle part of the bottom needle body, and positioning groove 12 is arranged at the outer side of both ends of needle core 11, and elastic joint sleeve 3 is matched and installed in positioning groove 12.

[0028] Referring to Figure 3 , positioning ring 31 matching positioning groove 12 is arranged at the upper and lower ends of elastic joint sleeve 3, mounting hole 32 is arranged at the middle part of elastic joint sleeve 3, mounting hole 32 matches needle core 11, and a plurality of buffer convex points 33 are arranged on the outer surface of elastic joint sleeve 3.

[0029] In this embodiment, positioning ring 31 of elastic joint sleeve 3 is aligned with positioning groove 12 at the outer side of both ends of needle core 11, and then elastic joint sleeve 3 is sleeved on needle core 11. Due to the matching relationship between positioning ring 31 and positioning groove 12, elastic joint sleeve 3 can be accurately installed on needle core 11, and axial displacement will not occur in subsequent use. During installation, it is necessary to ensure that mounting hole 32 at the middle part of elastic joint sleeve 3 is closely combined with needle core 11 to ensure the concentricity between them.

[0030] Specifically, the overall size of elastic joint sleeve 3 is consistent with the size of the bottom needle body of needle 1, that is, the outer diameter of elastic joint sleeve 3 matches the outer diameter of the bottom needle body of needle 1, a plurality of grooves 34 are arranged on the outer surface of elastic joint sleeve 3, a plurality of buffer convex points 33 are installed in a plurality of grooves 34, and a plurality of grooves 34 are arranged uniformly.

[0031] In this embodiment, after the installation of needle core 11 and elastic joint sleeve 3 is completed, the bottom needle body with needle core 11 and elastic joint sleeve 3 is assembled with other multistage needle bodies to form complete needle 1. During assembly, attention should be paid to the order of multistage needle bodies of needle 1, and assembly should be carried out in the way that the cross-sectional size gradually decreases from bottom to top, and it is necessary to ensure that the vertex of the top needle body is arc-shaped and the connecting surface of the surrounding needle body is inclined surface.

[0032] Referring toFigure 1 The vertex of the buffer convex point 33 does not exceed the groove of the slot 34.

[0033] Specifically, the vertex of the top needle body of the needle 1 is arc-shaped, and the connecting surface is beveled. The cross-sectional size of the multi-stage needle body of the needle 1 gradually decreases from bottom to top.

[0034] Specifically, the spring steel 21 is arranged at the lower section of the needle tail 2, and the spring steel 21 is helical. The upper end of the spring steel 21 is provided with a limiting ring 22 on the outer surface of the needle tail 2, and the lower end of the spring steel 21 is further provided with a base 23.

[0035] Specifically, the overall size of the spring steel 21 does not exceed the overall size of the needle tail 2, and the cross-sectional size of the needle tail 2 is larger than the cross-sectional size of the needle 1.

[0036] In this embodiment, the helical spring steel 21 is installed at the lower section of the needle tail 2. First, the base 23 at the lower end of the spring steel 21 is fixed at the corresponding position of the lower section of the needle tail 2, and then the spring steel 21 is sleeved on the needle tail 2, so that the limiting ring 22 at the upper end of the spring steel 21 is located at the predetermined position of the outer surface of the needle tail 2. During installation, it is ensured that the overall size of the spring steel 21 does not exceed the overall size of the needle tail 2, and the spring steel 21 can freely stretch and contract between the limiting ring 22 and the base 23.

[0037] In this embodiment, when the pin is inserted into the socket, due to the multi-stage needle body structure of the needle 1, the cross-sectional size gradually decreases from bottom to top, and the vertex of the top needle body is arc-shaped and the connecting surface is beveled, so the pin can be easily aligned with the insertion hole of the socket. During insertion, the needle 1 gradually enters the socket, and the buffer convex point 33 on the outer surface of the elastic joint sleeve 3 will produce a certain contact pressure with the internal structure of the socket. At this time, if there is slight vibration or misalignment, the buffer convex point 33 can be elastically deformed in the groove 34, which plays a certain buffering and adjusting role, ensuring that the pin is smoothly inserted into the socket.

[0038] Specifically, when the pin is completely inserted into the socket, the spring steel 21 of the needle tail 2 is in a certain compression or natural state. If the device vibrates, the spring steel 21 will stretch and contract according to the direction and amplitude of the vibration. When the device is subjected to vibration in the upward and downward direction, the spring steel 21 is compressed or stretched between the limiting ring 22 and the base 23, absorbing the vibration energy. At the same time, the vibration of the needle core 11 in the needle 1 is buffered by the elastic joint sleeve 3. The cooperation of the positioning ring 31 of the elastic joint sleeve 3 and the positioning groove 12 and the elastic deformation of the buffer convex point 33 can effectively reduce the influence of the vibration on the needle core 11, ensuring the stability of the electrical connection between the needle core 11 and the internal contact point of the socket.

[0039] In this embodiment, the pulling force is relatively small when pulling out the pin due to the structural features of the needle 1. The multi-stage needle body structure enables the pin to be smoothly pulled out of the socket during the pulling process and is not easy to cause damage to the interior of the socket.

[0040] In this embodiment, the elastic anti-vibration pin can effectively absorb the vibration energy when the device is subjected to vibration, whether it is an impact from the outside or a vibration source from the inside of the device. The spring steel 21 of the needle tail 2 and the elastic joint sleeve 3 in the needle head 1 work together, the spring steel 21 converts the vibration energy into elastic potential energy through stretching and contraction, and the elastic joint sleeve 3 absorbs the vibration energy through the elastic deformation of the buffer convex point 33, thereby greatly reducing the influence of vibration on the electrical connection between the pin and the socket. In some portable electronic devices, accidental collisions or shaking often occur, and this type of pin can ensure that the device can still work normally under these conditions and will not have problems such as poor contact or signal interruption caused by vibration.

[0041] Specifically, the elastic joint sleeve 3 provides good protection for the needle core 11. During the vibration process, the needle core 11 is isolated from the external vibration by the elastic joint sleeve 3, the cooperation of the positioning groove 12 and the positioning ring 31, and the buffering effect of the buffer convex point 33 ensure the stability of the needle core 11, thereby protecting the electrical connection between the needle core 11 and the internal contact point of the socket. This is very important for some devices that require high stability of electrical connection, such as precision measuring instruments, communication devices, etc.

[0042] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above figures and description are illustrative in nature and should not be construed as limiting the scope of protection of the present application.

Claims

1. A resilient shock absorbing pin, characterized by: Including needle (1) and needle tail (2), the needle tail (2) is arranged at one end of the needle (1), the needle core (11) is arranged in the middle of the needle (1), the needle core (11) is wrapped with elastic joint sleeve (3) outside, the lower segment of the needle tail (2) is provided with spring steel (21); The needle (1) is a multistage needle body, the needle core (11) is arranged in the middle of the bottom needle body, and the outer side of both ends of the needle core (11) is provided with a positioning groove (12), and the elastic joint sleeve (3) is matched and installed in the positioning groove (12); The elastic joint sleeve (3) is provided with a positioning ring (31) matched with the positioning groove (12) at the upper and lower ends, the elastic joint sleeve (3) is provided with an installation hole (32) in the middle, the installation hole (32) is matched with the needle core (11), and the outer surface of the elastic joint sleeve (3) is provided with a plurality of buffer convex points (33).

2. The elastic shock-resistant contact pin according to claim 1, characterized in that: The overall size of the elastic joint sleeve (3) is consistent with the size of the bottom needle body of the needle (1), that is, the outer diameter of the elastic joint sleeve (3) is matched with the outer diameter of the bottom needle body of the needle (1), the outer surface of the elastic joint sleeve (3) is provided with a plurality of grooves (34), a plurality of buffer convex points (33) are installed in a plurality of grooves (34), and a plurality of grooves (34) are uniformly arranged.

3. The elastic shock resistant contact pin of claim 2, wherein: The vertex of the buffer convex point (33) does not exceed the outer side of the groove body of the groove (34).

4. The elastic shock resistant contact pin of claim 1, wherein: The vertex of the top needle body of the needle (1) is arc-shaped, and the connection surface of the surrounding needle body is inclined, the cross-sectional size of the multistage needle body of the needle (1) gradually decreases from bottom to top.

5. The elastic shock resistant contact pin of claim 1, wherein: The spring steel (21) is arranged in the lower segment of the needle tail (2), and the spring steel (21) is spiral-shaped, the upper end of the spring steel (21) is located on the outer surface of the needle tail (2) and is further provided with a limiting ring (22), and the lower end of the spring steel (21) is further provided with a base (23).

6. The elastic shock resistant contact pin of claim 5, wherein: The overall size of the spring steel (21) does not exceed the overall size of the needle tail (2), and the cross-sectional size of the needle tail (2) is greater than the cross-sectional size of the needle (1).

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