Shock-resistant spring ejector pin
By setting up limited overlapping pieces and first steps on the outer wall of the pipe part of the spring thimble, and using the reset spring, the existing spring top needle is easy to be impacted during the loading and unloading process. sex.
Patent Information
- Application Number
- CN202421146403.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-23
AI Technical Summary
Existing spring thimbles are susceptible to violent insertion during the loading and unloading of wearable devices and loading and unloading equipment, resulting in the spring itself being often squeezed by extreme pressure, and the clips or structures of the limit springs are also subject to more frequency and greater impact. The downforce affects its impact resistance and electrical connection reliability.
Design a anti -impact spring thimble, by setting up limited overlapping pieces on the outer wall of the pipe, and connecting the first -step card of the active tiders, limiting the stretch of the activity thimble, and using the reset spring to achieve the reset of the activity thimket needle reset. Function and absorption impact.
Effectively improve the anti -impact capacity of the spring thimble, avoid excessive compression of the reset spring and the excessive shrinkage of the activity thimble into the pipeline, ensuring the reliability and stability of the electrical connection.
Smart Images
Figure CN222422431U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spring ejector pins, in particular to an impact-resistant spring ejector pin. Background Art
[0002] Pogo pin is a spring pin, which is a precision connector widely used in a variety of electronic devices and plays an electrical connection role.
[0003] Existing spring pins or similar connectors generally adopt an elastic telescopic structure, such as a fixed outer tube, a telescopic inner tube and a spring to form a connector, wherein the outer tube and the inner tube are generally circular tubes and coaxially arranged, and the telescopic function is achieved by compressing the spring through the inner tube.
[0004] With the rise of wearable devices and removable devices / structures, the use of spring ejectors is becoming more and more frequent. In the process of loading and unloading the above devices, it is difficult to avoid the phenomenon of violent insertion. As the frequency of loading and unloading increases, this phenomenon becomes more and more frequent, which causes the spring itself to be often squeezed to the limit. At the same time, the clamp or structure of the limit spring is also subjected to more frequent and greater impact downward pressure.
[0005] In this case, the spring pin or similar connector not only needs to improve its impact resistance, but also needs to ensure the reliability of electrical connection and ease of use of the structure, as well as maintain a compact size.
[0006] Therefore, there is an urgent need for an impact-resistant spring ejector pin that can solve one or more of the above problems. Utility Model Content
[0007] In order to solve one or more problems existing in the prior art, the utility model provides an impact-resistant spring ejector. The utility model adopts the following technical solutions to solve the above problems: an impact-resistant spring ejector, comprising: a pipe fitting, a connecting portion is provided at the lower end of the pipe fitting, the connecting portion is used to be electrically connected to a wire, and a limited overlap piece is provided on the outer side wall of the pipe fitting;
[0008] A movable ejector pin, wherein a first step is arranged on the outer side wall of the movable ejector pin, one end of the movable ejector pin is slidably mounted in the pipe fitting, the limiting overlap piece is engaged with the first step, the limiting overlap piece and the first step limit the extension stroke of the movable ejector pin, and the limiting overlap piece overlaps the outer side wall of the movable ejector pin;
[0009] A return spring is arranged between the movable ejector pin and the pipe fitting, the lower end of the return spring is connected to the pipe fitting, and the upper end of the return spring is connected to the movable ejector pin.
[0010] In some embodiments, the connection portion is provided with a clamping roll sheet, and the clamping roll sheet is used to clamp the wire and electrically connect with the wire.
[0011] Furthermore, the connecting portion is provided with a wrapping coil, and the wrapping coil is used to fasten the wire.
[0012] In some embodiments, a limiting portion is provided at the lower end of the tube, and the lower end of the return spring is engaged with the limiting portion.
[0013] In some embodiments, the lower end of the return spring expands outward and is in a bell-mouth shape.
[0014] In some embodiments, an outer side wall of the movable ejector pin is provided with a groove, and the groove forms the first step and the second step.
[0015] In some embodiments, the free end of the limiting overlap piece is inclined or bent toward the inner side of the pipe.
[0016] In some embodiments, an elastic overlapping piece is provided on the outer side wall of the tube, and the elastic overlapping piece overlaps the outer side wall of the movable ejector pin.
[0017] Furthermore, a bent overlapping portion is provided at the free end of the elastic overlapping piece, and the bent overlapping portion is formed with a portion bent toward the direction of the movable ejector pin.
[0018] In some embodiments, a lift piece is provided on the outer wall of the tube, and the lift piece is used to connect with the insulator.
[0019] The beneficial value achieved by the utility model is that the utility model realizes the travel limit and overlap of the pipe fitting and the movable ejector pin through the above-mentioned limit overlap plate and the first step, and realizes the reset function and absorption of impact force of the movable ejector pin through the reset spring; wherein, the limit overlap plate maintains the overlap with the movable ejector pin, and further absorbs the impact force by being clamped with the first step, thereby preventing the reset spring from being over-compressed and the movable ejector pin from being over-retracted into the pipe fitting.
[0020] The elastic overlap sheet and the movable ejector pin are elastically overlapped to further ensure the reliability and stability of the electrical connection between the movable ejector pin and the pipe fitting, and to prevent the limiting overlap sheet from being offset after multiple impacts, resulting in poor contact. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of embodiment 1 of the utility model;
[0022] Figure 2 It is an exploded view of embodiment 1 of the utility model;
[0023] Figure 3It is a cross-sectional view of embodiment 1 of the utility model;
[0024] Figure 4 It is a schematic diagram of embodiment 2 of the utility model;
[0025] Figure 5 It is an exploded view of embodiment 2 of the present utility model;
[0026] Figure 6 It is a cross-sectional view of Example 2 of the present utility model.
[0027] [Reference Signs]
[0028] 1… pipe fitting 10… connecting part 11… clamping roll sheet 12… wrapping roll sheet 13… limiting overlapping sheet 14… elastic overlapping sheet 140… bending overlapping part 15… lifting sheet 16… limiting part 2… movable ejector pin 20… groove 21… first step 22… second step 3… wire 4… return spring DETAILED DESCRIPTION
[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more understandable, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from this description, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed below.
[0030] The utility model discloses an impact-resistant spring ejector pin, combined with Figure 1-Figure 3 As shown, in embodiment 1, it includes: a pipe 1, a connecting portion 10 is provided at the lower end of the pipe 1, the connecting portion 10 is used to be electrically connected to the wire 3, and a limited overlap piece 13 is provided on the outer side wall of the pipe 1;
[0031] A movable ejector pin 2, wherein a first step 21 is provided on the outer side wall of the movable ejector pin 2, one end of the movable ejector pin 2 is slidably mounted in the pipe fitting 1, the limiting overlap piece 13 is engaged with the first step 21, the limiting overlap piece 13 and the first step 21 limit the extension stroke of the movable ejector pin 2, and the limiting overlap piece 13 overlaps the outer side wall of the movable ejector pin 2;
[0032] A return spring 4 is provided between the movable ejector pin 2 and the pipe fitting 1 , the lower end of the return spring 4 is connected to the pipe fitting 1 , and the upper end of the return spring 4 is connected to the movable ejector pin 2 .
[0033] It should be pointed out that the pipe fitting 1 and the movable ejector pin 2 are both conductive components, wherein the pipe fitting 1 and the movable ejector pin 2 can be a round tube structure to facilitate production and manufacturing.
[0034] Combination Figure 1 , Figure 2 As shown, the connecting portion 10 is provided with a clamping roll 11, and the clamping roll 11 is used to clamp the wire 3 and electrically connect with the wire, and the clamping roll 11 is connected to the metal part of the wire 3; the connecting portion 10 is provided with a wrapping roll 12, and the wrapping roll 12 is used to fasten the wire 3. Generally speaking, the wrapping roll 12 is connected to the insulating sheet part of the wire 3.
[0035] Again, combined Figure 3 As shown, a limiting portion 16 is provided at the lower end of the pipe 1, and the lower end of the return spring 4 is engaged with the limiting portion 16; in some implementation scenarios, the lower end of the return spring 4 is extended outward and is in a trumpet shape, in order to ensure the reliability of the limiting between the return spring 4 and the pipe 1, and to avoid the lower end of the return spring 4 from being offset or bent during use, thereby affecting the reliability and stability.
[0036] Specifically, combined Figure 2 As shown, the outer wall of the movable ejector 2 is provided with a groove 20, and the groove 20 forms the first step 21 and the second step 22, and the second step 22 may be provided with a chamfer or a rounded corner. The first step 21 is formed by the groove 20, so that the outer wall of the movable ejector 2 can have better contact with the pipe 1 (higher axial alignment), and improve the smoothness of the movable ejector 2 when moving up and down. If the first step 21 protrudes from the outer wall of the movable ejector 2, the gap volume between the movable ejector 2 and the pipe 1 will increase, so that the movable ejector 2 is prone to shaking and misalignment during use, and finally leads to poor stability.
[0037] It should be pointed out that, combined with Figure 2 , Figure 3 As shown, the free end of the limiting lap piece 13 is inclined or bent toward the inner side of the pipe 1, so as to facilitate the engagement of the limiting lap piece 13 with the first step 21, and at the same time, improve the impact resistance of the limiting lap piece 13. Furthermore, the limiting lap piece 13 itself also has a certain elasticity.
[0038] Based on the above embodiment 1, there is also embodiment 2, combining Figure 4-Figure 6 As shown, in embodiment 2: an elastic overlapping piece 14 is provided on the outer side wall of the pipe 1, and the elastic overlapping piece 14 overlaps with the outer side wall of the movable ejector pin 2;
[0039] The free end of the elastic overlapping piece 14 is provided with a bent overlapping portion 140 . The bent overlapping portion 140 is formed with a portion bent toward the movable ejector pin 2 . The bent overlapping portion 140 overlaps with the outer side wall of the movable ejector pin 2 .
[0040] By providing the bent overlap portion 140, after the movable ejector pin 2 is assembled in place, the elastic overlap sheet 14 is in an elastic deformation state, thereby causing the bent overlap portion 140 to press against the outer wall of the movable ejector pin 2, thereby improving the reliability and stability of the overlap. At the same time, the bent overlap portion 140 can also be engaged with the first step 21, so as to prevent the movable ejector pin 2 from being separated from the tube body 1 in special circumstances (when the movable ejector pin 2 is not fully in place during assembly).
[0041] The limiting overlap piece 13 and the elastic overlap piece 14 realize a double connection between the tube body 1 and the movable ejector pin 2 , thereby ensuring that there is no instantaneous disconnection in the electrical connection between them and improving reliability.
[0042] Specifically, combined Figure 1-Figure 6 As shown, a lift piece 15 is provided on the outer wall of the pipe 1, and the lift piece 15 is used to connect with an insulator (not shown in the figure), thereby clamping and installing the entire spring ejector pin in the insulator.
[0043] In summary, the utility model realizes the travel limit and overlap of the pipe fitting and the movable ejector pin through the above-mentioned limiting overlap plate and the first step, and realizes the reset function of the movable ejector pin and absorbs the impact force through the reset spring; wherein, the limiting overlap plate maintains the overlap with the movable ejector pin, and further absorbs the impact force by being clamped with the first step, thereby preventing the reset spring from being over-compressed and the movable ejector pin from being over-retracted into the pipe fitting.
[0044] The elastic overlap sheet and the movable ejector pin are elastically overlapped to further ensure the reliability and stability of the electrical connection between the movable ejector pin and the pipe fitting, and to prevent the limiting overlap sheet from being offset after multiple impacts, resulting in poor contact.
[0045] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.
[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0047] The above-described embodiments only express one or more implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as a limitation of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.
Claims
1. An impact-resistant spring ejector pin, characterized in that: include: A pipe fitting, wherein a connecting portion is provided at the lower end of the pipe fitting, the connecting portion is used to be electrically connected to a wire, and a limited overlap piece is provided on the outer side wall of the pipe fitting; A movable ejector pin, wherein a first step is arranged on the outer side wall of the movable ejector pin, one end of the movable ejector pin is slidably mounted in the pipe fitting, the limiting overlap piece is engaged with the first step, the limiting overlap piece and the first step limit the extension stroke of the movable ejector pin, and the limiting overlap piece overlaps the outer side wall of the movable ejector pin; A return spring is arranged between the movable ejector pin and the pipe fitting, the lower end of the return spring is connected to the pipe fitting, and the upper end of the return spring is connected to the movable ejector pin.
2. The anti-shock spring ejector according to claim 1, characterized in that: The connecting portion is provided with a clamping roll sheet, and the clamping roll sheet is used to clamp the wire and electrically connect with the wire.
3. The impact-resistant spring ejector according to claim 1 or 2, characterized in that: The connecting portion is provided with a wrapping coil, and the wrapping coil is used to fasten the wire.
4. The anti-shock spring ejector according to claim 1, characterized in that: A limiting portion is disposed at the lower end of the pipe, and the lower end of the return spring is engaged with the limiting portion.
5. The impact-resistant spring ejector according to claim 1, characterized in that: The lower end of the return spring expands outward and is in a trumpet shape.
6. The anti-shock spring ejector according to claim 1, characterized in that: The outer side wall of the movable ejector pin is provided with a groove, and the groove forms the first step and the second step.
7. The impact-resistant spring ejector according to claim 1, characterized in that: The free end of the limiting overlap piece is inclined or bent toward the inner side of the pipe.
8. The impact-resistant spring ejector according to claim 1, characterized in that: An elastic overlapping piece is arranged on the outer side wall of the pipe fitting, and the elastic overlapping piece overlaps with the outer side wall of the movable ejector pin.
9. The anti-shock spring ejector according to claim 8, characterized in that: The free end of the elastic overlapping piece is provided with a bent overlapping portion, and the bent overlapping portion is formed with a portion bent toward the movable ejector pin.
10. The anti-shock spring ejector according to claim 1, characterized in that: A lift piece is arranged on the outer side wall of the pipe fitting, and the lift piece is used to be connected with the insulator.