Damping type guide pin structure

Abstract

The utility model discloses a damping type guide pin structure which comprises a guide pin body, a pin head is arranged at the end of the guide pin body, a pin tail is arranged at the tail of the guide pin body, a damping structure is arranged on the guide pin body, a base is further connected to the bottom of the pin tail, and a spring is arranged between the bottom of the pin tail and the top of the base. The damping structure comprises a damping groove and a fixing groove, a movable positioning frame and a positioning block are installed in the damping groove and the fixing groove, a damping spring is installed between the top of the movable positioning frame and the top of the damping groove, and a protection assembly is fixed to the outer wall of the damping structure. According to the utility model, the plurality of damping grooves arranged on the outer wall of the needle tail are matched with the damping spring, so that external impact force can be effectively absorbed and buffered, and the vibration of the guide needle in the use process is reduced; through the matched design of the movable positioning frame and the positioning block, the damping structure can properly move when being impacted, and the damping effect is further enhanced; and through combination of the upper fixing sleeve, the lower fixing sleeve and the protective sleeve, external dust, liquid and other pollutants can be effectively prevented from entering the damping structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a shock attenuation type needle guide structure. BACKGROUND

[0002] The needle guide is a common connecting component in electronic components, and is usually used for electrical connection between a circuit board (PCB) and external equipment. The main function of the needle guide is to transmit electrical signals or power supply, and at the same time, to provide mechanical support. The needle guide is widely used in electronic components such as connectors, sockets, relays, etc.

[0003] During operation, the equipment may be subjected to external vibration or impact, resulting in poor contact between the needle guide and the connector, or even damage. Temperature changes may cause dimensional changes between the needle guide and the connector, affecting the stability of the connection. In the long-term use process, it is difficult to ensure the normal operation of the equipment under high-frequency vibration or harsh environment.

[0004] Therefore, it is necessary to invent a shock attenuation type needle guide structure 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 a shock attenuation type needle guide structure which can quickly install a radio frequency connector and lock it.

[0007] (II) Technical scheme

[0008] In order to achieve the above purpose, the utility model provides the following technical scheme: a shock attenuation type needle guide structure, comprising a needle guide body, the end of the needle guide body is a needle head, a needle tail is connected below the needle head, a shock attenuation structure is arranged on the needle tail, a base is further connected to the bottom of the needle tail, and a spring is arranged between the bottom of the needle tail and the top of the base;

[0009] The shock attenuation structure comprises a plurality of shock attenuation grooves arranged on the outer wall of the needle tail, a plurality of fixing grooves are arranged on the outer wall of the base, a movable positioning frame is arranged in the plurality of shock attenuation grooves and the plurality of fixing grooves, a positioning block is arranged at the end of the shock attenuation groove and the fixing groove, a shock attenuation spring is arranged between the top of the movable positioning frame and the top of the shock attenuation groove, and a protection assembly is fixed on the outer wall of the shock attenuation structure.

[0010] Preferably, the protection assembly comprises an upper fixed sleeve fixed on the outer wall of the needle tail and a lower fixed sleeve fixed on the outer wall of the base, a protection sleeve is fixed on the outer wall of the movable positioning frame, positioning rings are arranged at the upper end and the lower end of the protection sleeve, positioning grooves are arranged on the opposite sides of the upper fixed sleeve and the lower fixed sleeve, and the positioning grooves correspond to the positioning rings.

[0011] Preferably, the overall length of the protective sleeve meets the positioning ring at both ends entering the positioning groove, the overall length of the upper fixing sleeve is greater than the length of the damping groove, the overall length of the lower fixing sleeve does not exceed the overall length of the base, and the overall thickness of the upper fixing sleeve, the lower fixing sleeve and the protective sleeve is consistent.

[0012] Preferably, the inside of the mobile positioning frame is provided with a mobile groove matched with the positioning block, the overall size of the mobile positioning frame does not exceed the size of the damping groove and the fixed groove, the depth of the mobile groove matches the positioning block, the fixed groove below fixes the mobile positioning frame, and the damping groove above moves with the cooperation of the mobile groove and the damping spring.

[0013] Preferably, the overall size of the spring does not exceed the inner diameter size of the plurality of mobile positioning frames, and the spring does not contact the mobile positioning frame.

[0014] Preferably, the top of the needle is conical.

[0015] Compared with the prior art, the beneficial effects of the above technical scheme of the utility model are:

[0016] 1. The plurality of damping grooves on the outer wall of the needle tail cooperate with the damping springs, can effectively absorb and buffer external impact force, reduce the vibration of the guide needle in the use process, and improve the stability and accuracy of operation.

[0017] 2. The cooperation design of the mobile positioning frame and the positioning block makes the damping structure displace appropriately when impacted, further enhances the damping effect.

[0018] 3. The utility model forms a complete protection system through the combination of the upper fixing sleeve, the lower fixing sleeve and the protective sleeve, can effectively prevent external dust, liquid and other pollutants from entering the inside of the damping structure, prolongs the service life of the guide needle, and the positioning rings at the upper and lower ends of the protective sleeve cooperate with the positioning grooves on the upper fixing sleeve and the lower fixing sleeve, ensures the stable installation of the protection assembly, and further enhances the protection performance. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of 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 a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the protective component of this utility model;

[0022] Figure 3 This is a partial structural schematic diagram of the present invention;

[0023] Figure 4 This is a schematic diagram of the disassembled structure of the mobile positioning frame of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Guide needle body; 11. Needle tip; 12. Needle tail; 13. Base; 14. Spring; 2. Shock absorption structure; 21. Shock absorption groove; 22. Fixing groove; 23. Moving positioning frame; 24. Positioning block; 25. Shock absorption spring; 26. Moving groove; 3. Protective components; 31. Upper fixing sleeve; 32. Lower fixing sleeve; 33. Protective sleeve; 34. Positioning ring; 35. Positioning groove. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figures 1-4 The shock-absorbing guide needle structure shown includes a guide needle body 1, a needle tip 11 at the end of the guide needle body 1, a needle tail 12 connected below the needle tip 11, a shock-absorbing structure 2 on the needle tail 12, a base 13 connected to the bottom of the needle tail 12, and a spring 14 between the bottom of the needle tail 12 and the top of the base 13.

[0028] Reference Figure 3 The shock-absorbing structure 2 includes multiple shock-absorbing grooves 21 on the outer wall of the needle tail 12, multiple fixing grooves 22 on the outer wall of the base 13, a movable positioning frame 23 installed in the multiple shock-absorbing grooves 21 and the multiple fixing grooves 22, a positioning block 24 at the end of the shock-absorbing grooves 21 and the fixing grooves 22, a shock-absorbing spring 25 installed between the top of the movable positioning frame 23 and the top of the shock-absorbing groove 21, and a protective component 3 fixed on the outer wall of the shock-absorbing structure 2.

[0029] In this embodiment, the guide needle body 1 is made of high-strength stainless steel, and the needle tip 11 is precision ground into a tapered shape to ensure puncture performance; the needle tail 12 and the base 13 are integrally machined, and the outer diameter of the base 13 is slightly larger than that of the needle tail 12 to provide a support surface.

[0030] Specifically, multiple rectangular damping grooves 21 are uniformly milled circumferentially on the outer wall of the needle tail 12, with a depth of 1 / 3 of the needle tail wall thickness and a length extending axially. A fixing groove 22 is machined at the corresponding position on the outer wall of the base 13, the size of which matches the damping groove 21, and a positioning block 24 mounting hole is reserved at the bottom of the groove.

[0031] Specifically, the protective component 3 includes an upper fixing sleeve 31 fixed on the outer wall of the needle tail 12 and a lower fixing sleeve 32 fixed on the outer wall of the base 13. The protective sleeve 33 is fixed on the outer wall of the movable positioning frame 23. Positioning rings 34 extend from both the upper and lower ends of the protective sleeve 33. Positioning grooves 35 are provided on opposite sides of the upper fixing sleeve 31 and the lower fixing sleeve 32. The positioning grooves 35 correspond to the positioning rings 34.

[0032] Specifically, a cylindrical positioning block 24 is welded to the ends of the damping groove 21 and the fixing groove 22, with its height matching the groove depth. The movable positioning frame 23 is made of an elastic alloy sheet stamped into a U-shape, with a movable groove 26 on its inner side that matches the positioning block 24. The movable positioning frame 23 is inserted into the damping groove 21 and the fixing groove 22, causing the movable groove 26 to engage with the positioning block 24. The positioning block 24 in the lower fixing groove 22 is interference-fitted with the movable groove 26, while the positioning block 24 in the upper damping groove 21 maintains a sliding fit with the movable groove 26. A compression damping spring 25 is installed between the top of the damping groove 21 and the movable positioning frame 23. The spring preload ensures that the movable positioning frame 23 buffers rebound when subjected to force.

[0033] Specifically, the overall length of the protective sleeve 33 is such that the positioning rings 34 at both ends are connected to the positioning grooves 35, the overall length of the upper fixing sleeve 31 is greater than the length of the shock-absorbing groove 21, the overall length of the lower fixing sleeve 32 does not exceed the overall length of the base 13, and the overall thickness of the upper fixing sleeve 31, the lower fixing sleeve 32 and the protective sleeve 33 is the same.

[0034] Specifically, the inner side of the movable positioning frame 23 is provided with a movable groove 26, which cooperates with the positioning block 24. The overall size of the movable positioning frame 23 does not exceed the size of the shock-absorbing groove 21 and the fixed groove 22. The depth of the movable groove 26 matches the positioning block 24. The lower fixed groove 22 and the positioning block 24 fix the movable positioning frame 23. The upper shock-absorbing groove 21 and the positioning block 24 move under the cooperation of the movable groove 26 and the shock-absorbing spring 25.

[0035] In this embodiment, a helical spring 14 is installed between the bottom of the needle tail 12 and the top of the base 13. Its outer diameter is smaller than the inner diameter formed by the movable positioning frame 23, ensuring that the spring 14 does not contact the movable positioning frame 23 and independently bears the axial impact. The upper fixing sleeve 31 and the lower fixing sleeve 32 are respectively fitted onto the outer walls of the needle tail 12 and the base 13 and fixed by laser welding. The upper fixing sleeve 31 covers the shock-absorbing groove 21, and the lower fixing sleeve 32 is flush with the base 13.

[0036] The protective sleeve 33 is placed on the outside of the movable positioning frame 23, and the upper and lower positioning rings 34 are aligned with the annular positioning grooves 35 of the upper fixed sleeve 31 and the lower fixed sleeve 32. The positioning rings 34 are embedded into the positioning grooves 35 by hot pressing to form a sealed protection.

[0037] Reference Figures 1-2The overall size of the spring 14 does not exceed the inner diameter of the multiple movable positioning frames 23, and it does not contact the movable positioning frames 23.

[0038] Specifically, the tip of the needle 11 is conical.

[0039] In this embodiment, the width of the movable positioning frame 23 is 0.1mm narrower than the shock-absorbing groove 21 / fixed groove 22 to ensure smooth sliding; the depth of the movable groove 26 and the height of the positioning block 24 have a tolerance of ±0.05mm. The total length of the protective sleeve 33 is equal to the distance between the upper fixed sleeve 31 and the lower fixed sleeve 32, so that the positioning ring 34 is fully embedded in the positioning groove 35. The outer diameter of the spring 14 is 2mm smaller than the inner diameter of the movable positioning frame 23 to avoid radial contact.

[0040] In this embodiment, the tapered portion of the needle tip 11 penetrates the tissue, and the axial impact force is transmitted to the shock-absorbing structure 2 through the needle tail 12. The movable positioning frame 23 slides along the shock-absorbing groove 21, compressing the shock-absorbing spring 25 to absorb high-frequency vibrations; the main spring 14 compresses and buffers the axial impact force, and the double shock absorption reduces the operating reaction force.

[0041] Specifically, after the external force is released, the shock-absorbing spring 25 and the main spring 14 rebound, the moving positioning frame 23 resets, and the protective sleeve 33 maintains the sealing of the external structure.

[0042] In this embodiment, when the guide needle is subjected to external impact, the shock-absorbing groove 21 cooperates with the shock-absorbing spring 25 to absorb and buffer the impact force, reduce the vibration of the guide needle, and improve the stability and accuracy of operation. The movable positioning frame 23 moves within the shock-absorbing groove 21 and the fixed groove 22, and the positioning block 24 fixes the movable positioning frame 23 to ensure the stability and reliability of the shock-absorbing structure.

[0043] In this embodiment, the upper fixing sleeve 31, the lower fixing sleeve 32, and the protective sleeve 33 form a complete protection system to prevent external dust, liquids, and other contaminants from entering the shock-absorbing structure and extending the service life of the guide pin. The positioning rings 34 at the upper and lower ends of the protective sleeve 33 cooperate with the positioning grooves 35 on the upper fixing sleeve 31 and the lower fixing sleeve 32 to ensure the stable installation of the protective components and further enhance the protective performance.

[0044] In this embodiment, the movable groove 26 on the inner side of the movable positioning frame 23 cooperates with the positioning block 24 to ensure that the entire shock absorption structure remains stable when subjected to impact, preventing components from loosening or falling off due to vibration. The overall size of the spring 14 does not exceed the inner diameter of multiple movable positioning frames 23, and it does not contact the movable positioning frame 23, ensuring that the spring will not interfere with the movable positioning frame 23 during shock absorption, thus maintaining the stability of the structure.

[0045] In this embodiment, the upper fixing sleeve 31, the lower fixing sleeve 32 and the protective sleeve 33 have the same overall thickness, which ensures the durability and consistency of each component in long-term use and reduces the risk of failure due to component wear.

[0046] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A shock-absorbing guide needle structure, characterized in that: Includes a guide needle body (1), the end of the guide needle body (1) is a needle tip (11), a needle tail (12) is connected below the needle tip (11), a shock-absorbing structure (2) is provided on the needle tail (12), a base (13) is also connected to the bottom of the needle tail (12), and a spring (14) is provided between the bottom of the needle tail (12) and the top of the base (13). The shock-absorbing structure (2) includes multiple shock-absorbing grooves (21) on the outer wall of the needle tail (12), multiple fixing grooves (22) on the outer wall of the base (13), a movable positioning frame (23) is installed in the multiple shock-absorbing grooves (21) and the multiple fixing grooves (22), a positioning block (24) is provided at the end of the shock-absorbing grooves (21) and the fixing grooves (22), a shock-absorbing spring (25) is installed between the top of the movable positioning frame (23) and the top of the shock-absorbing groove (21), and a protective component (3) is fixed on the outer wall of the shock-absorbing structure (2).

2. The shock-absorbing guide needle structure according to claim 1, characterized in that: The protective component (3) includes an upper fixing sleeve (31) fixed on the outer wall of the needle tail (12) and a lower fixing sleeve (32) fixed on the outer wall of the base (13). The protective sleeve (33) is fixed on the outer wall of the movable positioning frame (23). The upper and lower ends of the protective sleeve (33) are both extended with positioning rings (34). The upper fixing sleeve (31) and the lower fixing sleeve (32) are provided with positioning grooves (35) on opposite sides. The positioning grooves (35) correspond to the positioning rings (34).

3. The shock-absorbing guide needle structure according to claim 2, characterized in that: The overall length of the protective sleeve (33) is such that the positioning rings (34) at both ends are connected to the positioning groove (35). The overall length of the upper fixing sleeve (31) is greater than the length of the shock-absorbing groove (21). The overall length of the lower fixing sleeve (32) does not exceed the overall length of the base (13). The overall thickness of the upper fixing sleeve (31), the lower fixing sleeve (32) and the protective sleeve (33) is the same.

4. The shock-absorbing guide needle structure according to claim 1, characterized in that: The inner side of the movable positioning frame (23) is provided with a movable groove (26), which cooperates with the positioning block (24). The overall size of the movable positioning frame (23) does not exceed the size of the shock-absorbing groove (21) and the fixed groove (22). The depth of the movable groove (26) matches the positioning block (24). The lower fixed groove (22) and the positioning block (24) fix the movable positioning frame (23). The upper shock-absorbing groove (21) and the positioning block (24) move under the cooperation of the movable groove (26) and the shock-absorbing spring (25).

5. The shock-absorbing guide needle structure according to claim 1, characterized in that: The overall size of the spring (14) does not exceed the inner diameter of the plurality of the movable positioning frames (23), and it does not contact the movable positioning frames (23).

6. The shock-absorbing guide needle structure according to claim 1, characterized in that: The tip of the needle (11) is conical.

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