Guide pin structure capable of being quickly inserted and pulled

Abstract

The utility model discloses a guide pin structure capable of being quickly inserted and pulled. The guide pin structure comprises a pin head end, a pin seat end and a reset spring, the top of the needle seat end is concaved inwards to form a groove, a limiting ring is arranged at the top of the needle seat end, a positioning moving groove is formed in the inner wall of the needle seat end, and a top block assembly is further arranged on the needle seat end; a positioning ring is arranged at the bottom of the needle head end, a positioning block is arranged at the bottom of the positioning ring, and a clamping block assembly is further arranged on the outer wall of the needle head end. According to the utility model, the reset spring can be quickly plugged and unplugged, and the operation is convenient and efficient; a plurality of positioning moving grooves are formed in the inner wall of the groove, and positioning blocks at the bottom of the needle head end move in the positioning moving grooves, so that the needle head end has good guidance quality and stability when moving in the groove; the bottom of the needle head end is positioned into the groove by the clamping block assembly, so that the needle head end is positioned; the ejector block assembly acts on the clamping block assembly, and the position of the clamping block can be conveniently controlled through movement of the ejector block in the through groove.

Description

Technical Field

[0001] This utility model specifically relates to a guide pin structure that can be quickly inserted and removed. Background Technology

[0002] Electronic testing probes typically feature high-precision tips to ensure good contact with minute test points. The probe body may be made of special conductive materials to guarantee accurate signal transmission. In automated production lines, probes are frequently used for positioning, connection, or transmission operations. In the electronic chip manufacturing process, probes are used to connect chips to circuit boards.

[0003] Traditional guide pins typically use threaded or snap-fit ​​connections. Threaded connections require multiple rotations of the guide pin to complete insertion and removal, making the process cumbersome and time-consuming. Traditional guide pin insertion and removal methods are ill-suited to the high-speed, high-efficiency requirements of automated production lines, thus impacting overall production efficiency.

[0004] Therefore, it is necessary to invent a quick-insert / remove guide pin structure to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model

[0006] To address the technical problems existing in the background art, this utility model proposes a quick-insertion guide pin structure that enables quick insertion and removal of the guide pin.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a quick-insertion and removable guide needle structure, comprising a needle tip end and a needle seat end, wherein the needle tip end is mounted on the top of the needle seat end, and a return spring is directly installed at the bottom of the needle tip end and the top of the needle seat end;

[0009] The top of the needle seat has an inwardly recessed groove, the needle tip moves within the groove, a limiting ring is provided at the top opening of the groove, and multiple positioning and moving grooves are provided on the inner wall. The needle seat is also provided with a top block assembly, and the reset spring is placed within the groove.

[0010] The needle tip is provided with a positioning ring at the bottom, which is constrained by the limiting ring. The positioning ring is also provided with positioning blocks on both sides of the bottom of the positioning ring. The positioning blocks move in the positioning moving groove. The outer wall of the needle tip is also provided with a locking block assembly, which positions the bottom of the needle tip into the groove.

[0011] The top block assembly acts on the card block assembly.

[0012] Preferably, the locking block assembly includes two locking slots disposed on the outer wall of the needle tip, the two locking slots are symmetrically arranged, and a locking block is installed in the locking slot. A limiting strip is provided at the opening of the locking slot, and a stop strip is provided at the end of the locking block corresponding to the limiting strip. Multiple compression springs are installed between the bottom of the locking block and the bottom of the locking slot.

[0013] Preferably, the card block has sloping surfaces on both the top and bottom, forming a triangle, with the slope of the upper sloping surface being greater than that of the lower sloping surface.

[0014] Preferably, the top block assembly includes a through groove disposed on the outer wall of the needle seat end, the through groove being disposed through the outer wall of the needle seat end, a top block being installed inside the through groove, a limiting strip being provided at the end of the top block, a groove plate being provided at the groove opening of the through groove to limit the limiting strip, and a leak-proof plate extending to both sides from the other end of the top block.

[0015] Preferably, the extension length of the leak-proof plate should at least meet the following requirements: outside the two sides of the through groove, the top block is triangular in shape, and the slope of its upper slope is less than the slope of its lower slope.

[0016] Preferably, the cross-sectional area of ​​the needle tip gradually decreases, and the tip is hemispherical.

[0017] Preferably, the positioning block is L-shaped, with one end placed in the positioning and moving groove and the other end fixed to the bottom of the needle tip.

[0018] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are:

[0019] 1. In this utility model, the reset spring is installed between the bottom of the needle tip and the top of the needle seat. When it is necessary to insert or remove the guide needle, the needle tip can compress or stretch the reset spring in the groove to perform a quick insertion or removal action, which is convenient and efficient.

[0020] 2. In this utility model, the inner wall of the groove is provided with multiple positioning and moving grooves. The positioning block at the bottom of the needle tip moves in the positioning and moving grooves. At the same time, the positioning ring is restricted by the limiting ring. This structural design makes the needle tip have good guidance and stability when it moves in the groove, ensuring that the needle tip always moves along the predetermined path, avoiding shaking or deviation during insertion and removal, and ensuring the normal use of the guide needle structure.

[0021] 3. In this utility model, the locking block assembly positions the bottom of the needle tip into the groove. The locking block achieves elastic extension and retraction within the groove through a compression spring. When the needle tip is inserted into the appropriate position in the groove, the locking block pops out and locks in the corresponding position, thereby achieving the positioning of the needle tip.

[0022] 4. In this utility model, the top block assembly acts on the locking block assembly. By moving the top block in the through groove, the position of the locking block can be easily controlled. When it is necessary to pull out the guide needle, push the top block, and the top block acts on the locking block to make it retract into the locking groove, so that the needle tip can be pulled out smoothly. The operation is simple and convenient. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the disassembled structure of the needle tip and needle seat of this utility model.

[0026] Figure 3 This is a schematic diagram of the card block assembly structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the positioning block installation structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the top block assembly structure of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Needle tip end; 11. Positioning ring; 12. Positioning block; 13. Locking block assembly; 131. Locking groove; 132. Locking block; 133. Limiting strip; 134. Stop bar; 135. Compression spring; 2. Needle seat end; 21. Groove; 22. Limiting ring; 23. Positioning movement groove; 24. Top block assembly; 241. Through groove; 242. Top block; 243. Limiting stop bar; 244. Groove plate; 245. Leak-proof plate; 3. Reset spring. Detailed Implementation

[0031] 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.

[0032] This utility model provides, for example Figure 1-5 The illustrated guide needle structure includes a needle tip 1 and a needle seat 2. The needle tip 1 is mounted on the top of the needle seat 2, and a return spring 3 is directly mounted on the bottom of the needle tip 1 and the top of the needle seat 2.

[0033] Specifically, the top of the needle seat end 2 is recessed inward with a groove 21, the needle tip end 1 moves in the groove 21, a limiting ring 22 is provided at the top opening of the groove 21, and multiple positioning and moving grooves 23 are provided on the inner wall. The needle seat end 2 is also provided with a top block assembly 24, and the reset spring 3 is placed in the groove 21.

[0034] Specifically, a positioning ring 11 is provided at the bottom of the needle tip 1. The positioning ring 11 is restricted by the limiting ring 22. Positioning blocks 12 are also provided on both sides of the bottom of the positioning ring 11. The positioning blocks 12 move in the positioning moving groove 23. A locking block assembly 13 is also provided on the outer wall of the needle tip 1. The locking block assembly 13 positions the bottom of the needle tip 1 into the groove 21.

[0035] Specifically, the top block component 24 acts on the card block component 13.

[0036] In this embodiment, the reset spring 3 is placed in the groove 21 at the top of the needle seat end 2. The positioning ring 11 at the bottom of the needle tip end 1 is aligned with the limiting ring 22 at the top opening of the groove 21, so that the positioning ring 11 is restricted by the limiting ring 22. At the same time, the L-shaped positioning blocks 12 on both sides of the bottom of the positioning ring 11 are respectively placed in the positioning moving groove 23 on the inner wall of the groove 21, ensuring that the needle tip end 1 can move stably along the positioning moving groove 23 in the groove 21. The locking blocks 132 are installed in the two symmetrical locking grooves 131 on the outer wall of the needle tip end 1. Multiple compression springs 135 are installed between the bottom of the locking blocks 132 and the bottom of the locking grooves 131. The groove opening of the locking grooves 131 is provided with a limiting strip 133. The end of the locking blocks 132 is provided with a stop strip 134 corresponding to the limiting strip 133 to prevent the locking blocks 132 from falling out of the locking grooves 131.

[0037] Specifically, a through groove 241 is opened on the outer wall of the needle seat end 2, penetrating the outer wall. A top block 242 is installed in the through groove 241. A limiting strip 243 is provided at the end of the top block 242. A groove plate 244 is provided at the groove opening of the through groove 241 to limit the limiting strip 243 and prevent the top block 242 from coming out of the through groove 241. A leak-proof plate 245 is installed on both sides of the other end of the top block 242, and the extension length of the leak-proof plate 245 is at least sufficient for both sides of the through groove 241.

[0038] Reference Figure 3 The locking block assembly 13 includes two locking slots 131 disposed on the outer wall of the needle end 1. The two locking slots 131 are symmetrically arranged, and a locking block 132 is installed in the locking slot 131. A limiting strip 133 is provided at the opening of the locking slot 131, and a stop strip 134 is provided at the end of the locking block 132 corresponding to the limiting strip 133. Multiple compression springs 135 are installed between the bottom of the locking block 132 and the bottom of the locking slot 131.

[0039] Specifically, the top and bottom surfaces of the card block 132 are both sloping surfaces, forming a triangle overall, with the slope of the upper sloping surface being greater than that of the lower sloping surface.

[0040] Reference Figure 5 The top block assembly 24 includes a through groove 241 disposed on the outer wall of the needle seat end 2. The through groove 241 penetrates the outer wall of the needle seat end 2 and a top block 242 is installed inside it. A limiting strip 243 is provided at the end of the top block 242. A groove plate 244 is provided at the groove opening of the through groove 241 to limit the limiting strip 243. A leak-proof plate 245 extends to both sides from the other end of the top block 242.

[0041] Specifically, the extension length of the leak-proof plate 245 must at least meet the requirement that, apart from both sides of the through groove 241, the top block 241 is triangular in shape, and the slope of its upper slope is less than that of its lower slope.

[0042] Reference Figure 1-2 The cross-sectional area of ​​the needle tip 1 gradually decreases, and the top is hemispherical.

[0043] Reference Figure 4 The positioning block 12 is L-shaped, with one end placed in the positioning and moving groove 23 and the other end fixed to the bottom of the needle end 1.

[0044] In this embodiment, the insertion operation of the guide needle is as follows: the needle tip 1 is aligned with the groove 21 of the needle seat end 2 and inserted. During the insertion process, the needle tip 1 compresses the return spring 3, and the positioning block 12 slides within the positioning moving groove 23 to ensure the stability and accuracy of the insertion of the needle tip 1. When the needle tip 1 is inserted to the appropriate position, the locking block 132 pops out under the action of the compression spring 135 and locks in the corresponding position within the groove 21, thereby achieving the positioning of the needle tip 1. At this time, the guide needle insertion is completed and the device is in normal working condition.

[0045] In this embodiment, the guide needle removal operation is as follows: Pushing the top block 242 in the top block assembly 24 causes the top block 242 to move within the through groove 241. Since the top block 242 is triangular in shape and the slope of its upper slope is less than that of its lower slope, and the locking block 132 has slopes on both its upper and lower surfaces with a greater slope at the upper end than at the lower end, the movement of the top block 242 acts on the locking block 132, causing it to retract into the locking groove 131 against the elastic force of the compression spring 135. After the locking block 132 retracts, it loses its positioning function for the needle tip 1. At this time, under the elastic force of the return spring 3, the needle tip 1 pops out from the groove 21, completing the guide needle removal operation.

[0046] In this embodiment, the quick insertion and removal function of the guide needle is achieved by setting the return spring 3. When inserted, the return spring 3 is compressed and stores elastic potential energy; when removed, the return spring 3 releases elastic potential energy, pushing the needle tip 1 to quickly disengage from the needle seat end 2, which greatly improves the efficiency of the guide needle and is suitable for scenarios that require frequent insertion and removal of the guide needle.

[0047] Specifically, the cooperation between the positioning ring 11 and the limiting ring 22, as well as the movement of the positioning block 12 within the positioning moving groove 23, ensures good guidance and stability for the movement of the needle tip 1 within the groove 21. During insertion and removal, the needle tip 1 can only move along the path of the positioning moving groove 23, effectively preventing wobbling and deviation of the needle tip 1, and ensuring the accuracy and reliability of the guide needle structure during use.

[0048] In this embodiment, the locking block assembly 13 stably positions the bottom of the needle tip 1 within the groove 21, preventing the guide needle from accidentally loosening or coming out due to external forces or other factors during normal use, thus ensuring the stability of the guide needle in the working state.

[0049] Specifically, the cooperative design of the top block assembly 24 and the locking block assembly 13 makes the removal of the guide pin simple and convenient. Simply pushing the top block 242 easily retracts the locking block 132, allowing the guide pin to be removed smoothly, reducing the labor intensity of the operator and improving the convenience of operation.

[0050] 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 quick-insertion guide pin structure, characterized in that: It includes a needle tip (1) and a needle seat (2). The needle tip (1) is installed on the top of the needle seat (2), and a return spring (3) is directly installed at the bottom of the needle tip (1) and the top of the needle seat (2). The needle seat end (2) has a groove (21) recessed inward at the top. The needle tip end (1) moves in the groove (21). A limiting ring (22) is provided at the top opening of the groove (21), and multiple positioning and moving grooves (23) are provided on the inner wall. A top block assembly (24) is also provided on the needle seat end (2). The reset spring (3) is placed in the groove (21). The needle tip (1) is provided with a positioning ring (11) at the bottom. The positioning ring (11) is restricted by the limiting ring (22). The positioning ring (11) is also provided with positioning blocks (12) on both sides of the bottom. The positioning blocks (12) move in the positioning moving groove (23). The needle tip (1) is also provided with a locking block assembly (13) on the outer wall. The locking block assembly (13) positions the bottom of the needle tip (1) into the groove (21). The top block assembly (24) acts on the card block assembly (13).

2. The quick-insertion guide pin structure according to claim 1, characterized in that: The locking block assembly (13) includes two locking slots (131) disposed on the outer wall of the needle end (1). The two locking slots (131) are symmetrically arranged, and a locking block (132) is installed in the locking slot (131). A limiting strip (133) is provided at the opening of the locking slot (131). A stop strip (134) is provided at the end of the locking block (132) corresponding to the limiting strip (133). A plurality of compression springs (135) are installed between the bottom of the locking block (132) and the bottom of the locking slot (131).

3. The quick-insertion guide pin structure according to claim 2, characterized in that: The card block (132) has sloping surfaces on both the top and bottom, and is triangular in shape. The slope of the upper sloping surface is greater than that of the lower sloping surface.

4. The quick-insertion guide pin structure according to claim 1, characterized in that: The top block assembly (24) includes a through groove (241) disposed on the outer wall of the needle seat end (2). The through groove (241) penetrates the outer wall of the needle seat end (2) and a top block (242) is installed inside it. A limiting strip (243) is provided at the end of the top block (242). A groove plate (244) is provided at the groove opening of the through groove (241) to limit the limiting strip (243). A leak-proof plate (245) extends to both sides from the other end of the top block (242).

5. The quick-insertion guide pin structure according to claim 4, characterized in that: The extension length of the leak-proof plate (245) must at least satisfy the following conditions: outside the two sides of the through groove (241), the top block (242) is triangular in shape, and the slope of its upper slope is less than that of its lower slope.

6. The quick-insertion guide pin structure according to claim 1, characterized in that: The cross-sectional area of ​​the needle tip (1) gradually decreases, and the top is hemispherical.

7. The quick-insertion guide pin structure according to claim 1, characterized in that: The positioning block (12) is L-shaped, with one end placed in the positioning moving groove (23) and the other end fixed to the bottom of the needle end (1).

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