Movable contact spring convenient to install

Abstract

The utility model provides a movable contact spring convenient to install, which relates to the technical field of movable contact springs, and comprises a movable contact spring fixing end, the short side edge of the movable contact spring fixing end is provided with an insertion port, and the top end of the insertion port is provided with a dismounting groove along the direction of the insertion port; an inlet elastic clamping piece set, a middle section fixing solid clamping piece set and a rear end fixing solid clamping piece set are sequentially arranged in the inserting opening in the inserting direction, and the inlet elastic clamping piece set, the middle section fixing solid clamping piece set and the rear end fixing solid clamping piece set are arranged in an up-down symmetrical mode. The distance between the inlet elastic clamping piece set and the middle-end clamping piece set is smaller than that between the middle-end clamping piece set and the rear-end clamping piece set, base inserting pieces are guided to be smoothly inserted through the elastic deformation characteristic, and initial positioning is provided for the inserting pieces in the initial stage. The distance between the middle section fixing solid clamping piece set and the rear end clamping piece set is smaller than the thickness of the base inserting piece by 0.5 mm-1 mm, the interference fit design enables the inserting piece to be tightly clamped after the inserting piece is inserted, and the inserting piece is effectively prevented from shaking in the horizontal direction.

Description

Technical Field

[0001] This utility model relates to the field of movable spring technology, and in particular to a movable spring that is easy to install. Background Technology

[0002] Moving springs, as key elastic conductive components in electromagnetic devices such as relays and switches, are widely used. However, traditional methods of fixing moving springs have several drawbacks in practical applications: While welding can securely attach the moving spring to the base plate, thermal stress during welding can reduce its elasticity. Furthermore, damage necessitates replacement of the entire moving spring due to the non-removable weld points, leading to high costs. Additionally, while riveting or clamping improves the fixing strength and stability, riveting points are prone to fatigue fracture and require high installation precision, making them unsuitable for miniaturized devices. Clamping, while simple in structure, suffers from difficulty in precisely controlling clamping force, leading to poor contact under vibration or thermal expansion. Existing simple snap-fit ​​installations facilitate installation, disassembly, and maintenance, but their stability needs improvement. Therefore, we propose a moving spring that is easy to install. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and improve the existing snap-fit ​​installation structure so that the moving spring can be quickly and stably inserted into the base insert and put into stable use, and subsequent maintenance is convenient for disassembly and replacement.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An easy-to-install movable spring includes a movable spring fixing end, wherein a plug interface is provided on the short side of the movable spring fixing end, and a disassembly groove is provided at the top of the plug interface along the plug interface direction;

[0006] The insertion interface is provided with an inlet elastic clip group, a middle section fixed solid clip group and a rear end fixed solid clip group in sequence along the insertion direction. The inlet elastic clip group, the middle section fixed solid clip group and the rear end fixed solid clip group are all arranged symmetrically from top to bottom.

[0007] The clamps on the rear fixed solid clamping plate assembly are disconnected at the corresponding disassembly slots;

[0008] The disassembly slot is provided with a fixing seat at the lower clamp of the solid clamping plate assembly at the rear end.

[0009] Furthermore, the fixed end of the movable spring is integrally formed with a transition section away from the insertion end, and the transition section is connected to the main body of the movable spring.

[0010] Furthermore, the top of the fixed end of the moving spring is centered and thickened at the corresponding insertion interface.

[0011] Furthermore, the width of the disassembly slot is one-third to one-half the width of the insertion interface, and the insertion interface and the disassembly slot have the same length.

[0012] Furthermore, the two sides of the insertion interface are provided with insertion guide grooves.

[0013] Furthermore, both ends of the inlet elastic clip group are provided with guide parts, and the inlet elastic clip group and the inner wall of the insertion interface are provided with an elastic gap. The gap of the inlet elastic clip group is smaller than that of the middle fixed solid clip group and the rear fixed solid clip group.

[0014] Furthermore, the inlet elastic clip group is arranged on both sides of the disassembly groove, so that the width of the inlet elastic clip group is reduced to facilitate the insertion of the base insert.

[0015] Furthermore, both ends of the middle section fixed solid clamping piece group are provided with guide portions, and the rear section fixed solid clamping piece group is provided with a guide portion facing the middle section fixed solid clamping piece group. The distance between the middle section fixed solid clamping piece group and the rear section fixed solid clamping piece group is less than the thickness of the base insert piece by 0.5mm-1mm.

[0016] Furthermore, the fixing base is provided with a threaded groove, and the top of the threaded groove is provided with an embedded circular groove. By installing a locking screw into the threaded groove, it abuts against the base insert, and the embedded circular groove can accommodate the screw head.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. Inlet elastic clip assembly: Guide parts are provided at both ends and there is an elastic gap between the clip assembly and the inner wall of the insertion interface. The gap is smaller than that of the middle and rear clip assemblies. The elastic deformation characteristics are used to guide the base clip to be inserted smoothly. In the initial stage, the clip is initially positioned. At the same time, its width is reduced due to the arrangement on both sides of the disassembly groove, which further reduces the insertion resistance and realizes rapid installation.

[0019] The middle section is fixed with solid clamping pieces: guide parts are set at both ends to provide stable guidance during the insertion of the insert. The distance between the clamping pieces and the rear clamping pieces is 0.5mm-1mm less than the thickness of the base insert. This interference fit design allows the insert to be tightly clamped after insertion, effectively preventing the insert from wobbling in the horizontal direction and significantly improving the stability of the installation.

[0020] Rear fixed solid clamping plate assembly: A guide part is set towards the middle clamping plate assembly end to ensure that the insert can smoothly enter the area. The fixed base corresponds to the lower clamping plate of the rear fixed solid clamping plate assembly. The threaded groove on it can be used to install locking screws to further abut and clamp the base insert, forming a stable positioning structure and ensuring the reliability of the connection between the moving spring and the base insert.

[0021] 2. Removal slot: It is set at the top of the plug interface and opened along the direction of the plug interface. Its width is one-third to one-half of the width of the plug interface, and its length is the same as that of the plug interface. It prevents the base plug from getting stuck (the base plug can be pulled out with the help of tools through the removal slot), and allows the insertion status of the base plug to be observed. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of a movable spring that is easy to install, provided by this utility model;

[0023] Figure 2 A schematic diagram of the overall structure of a movable spring that is easy to install, provided by this utility model;

[0024] Figure 3 A partially enlarged schematic diagram (A) of a movable spring that is easy to install according to this utility model;

[0025] Figure 4 This utility model provides a schematic diagram of a solid clamping plate assembly for fixing the middle section of a movable spring, which is easy to install.

[0026] Legend: 1. Fixed end of the moving spring; 11. Transition section;

[0027] 2. Insertion interface; 21. Inlet elastic clip assembly; 211. Elastic spacing; 22. Middle section fixed solid clip assembly; 23. Rear end fixed solid clip assembly; 201. Insertion guide groove;

[0028] 3. Disassemble the slot;

[0029] 4. Fixing base; 41. Threaded groove; 42. Embedded circular groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0031] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Example 1

[0035] like Figure 1-4 As shown, this utility model provides a technical solution: a movable spring that is easy to install, including a movable spring fixing end 1. The movable spring fixing end 1 is a key basic part for connecting the movable spring and the base insert. Its short side is provided with an insertion interface 2, which provides an insertion space for the base insert and is the part that realizes the initial connection between the movable spring and the base insert.

[0036] A disassembly groove 3 is provided at the top of the insertion interface 2 along the direction of the insertion interface 2. The disassembly groove 3 is an important auxiliary operation channel to avoid jamming when disassembling the moving spring in the future. It can also be used as a window to observe the insertion depth of the base insert.

[0037] Inside the insertion interface 2, along the insertion direction, there are sequentially arranged an inlet elastic clamping piece group 21, a middle section fixed solid clamping piece group 22, and a rear end fixed solid clamping piece group 23. These three clamping piece groups cooperate with each other to fix the base insert. The inlet elastic clamping piece group 21, the middle section fixed solid clamping piece group 22, and the rear end fixed solid clamping piece group 23 are all arranged symmetrically from top to bottom. This symmetrical design can ensure that the clamping force on the base insert is evenly distributed and improve the stability of the fixation.

[0038] Specifically, for the convex base insert, after the base insert is fully inserted, it disengages from the inlet elastic clip group 21. At this time, the base insert abuts against the inner guide part of the inlet elastic clip group 21 to provide front-end limit, and will not disengage from the insertion interface 2 without being subjected to excessive tension.

[0039] For the disassembly slot 3, the upper clamp of the rear fixed solid clamping piece group 23 is disconnected at the disassembly slot 3, and then the fixing seat 4 is designed. The fixing seat 4 is provided at the lower clamp of the rear fixed solid clamping piece group 23 corresponding to the disassembly slot 3. The fixing seat 4 provides an installation position for the subsequent installation of the locking screw, and plays the role of fixing and supporting the locking screw.

[0040] Example 2

[0041] like Figure 1 As shown in Figure 4, the fixed end 1 of the moving spring is integrally formed with a transition section 11 away from the insertion interface 2. The transition section 11 is connected to the moving spring body. The moving spring body also includes a contact end, which is the existing complete spring structure.

[0042] The top of the fixed end 1 of the moving spring is centered and thickened at the insertion interface 2. Since the insertion interface 2 is the key part connecting the moving spring and the base insert, it will be subjected to greater stress during insertion and disassembly. The thickened design can enhance the strength of this part, prevent the moving spring from deforming or breaking during insertion and removal, extend the service life of the moving spring, and also meet the space requirements of the snap-fit ​​structure design at the insertion interface 2.

[0043] The width of the disassembly slot 3 is one-third to one-half the width of the insertion interface 2. The insertion interface 2 and the disassembly slot 3 have the same length. This size design ensures that the disassembly slot 3 has enough space for disassembly tools to operate, and that the overall structural strength of the insertion interface 2 and the fixing effect on the base insert are not affected by the disassembly slot 3 being too large. At the same time, it is convenient to observe the insertion depth of the base insert.

[0044] Preferably, the two sides of the insertion interface 2 are provided with insertion guide grooves 201. The insertion guide grooves 201 can guide the base insert when it is inserted, so that the base insert can be accurately and quickly inserted into the designated position in the insertion interface 2, thereby improving the efficiency and accuracy of installation.

[0045] It should be noted that the base inserts are generally not designed with guide inserts at both ends (insertion direction), and the insertion guide grooves 201 are opened according to the requirements.

[0046] Both ends of the inlet elastic clip group 21 are provided with guide parts. An elastic gap 211 is left between the inlet elastic clip group 21 and the inner wall of the insertion interface 2. The elastic gap 211 gives the inlet elastic clip group 21 a certain elastic deformation capability. When the base insert is inserted, the inlet elastic clip group 21 can make room for the base insert by elastic deformation under the guidance of the guide parts. The gap of the inlet elastic clip group 21 is smaller than that of the middle fixed solid clip group 22 and the rear fixed solid clip group 23. This design can limit the base insert after the base insert is inserted to prevent the insert from falling off.

[0047] The inlet elastic clip group 21 is arranged on both sides of the disassembly groove 3, which reduces the width of the inlet elastic clip group 21 to facilitate the insertion of the base insert. Reducing the width can reduce the insertion resistance of the inlet elastic clip group 21 to the base insert, so that the base insert can enter the insertion interface 2 more easily.

[0048] Both ends of the middle section fixed solid clamping piece group 22 are provided with guide parts, and the rear end fixed solid clamping piece group 23 is provided with a guide part facing the middle section fixed solid clamping piece group 22. The guide parts can guide the base insert to smoothly enter the clamping area of ​​the middle section fixed solid clamping piece group 22 and the rear end fixed solid clamping piece group 23. The distance between the upper and lower clamping pieces of the middle section fixed solid clamping piece group 22 and the rear end fixed solid clamping piece group 23 is less than the thickness of the base insert by 0.5mm-1mm. This interference fit design allows the base insert to be tightly clamped after insertion, effectively preventing the insert from shaking in the horizontal direction and ensuring the reliability of the connection between the moving spring and the base insert.

[0049] The fixed base 4 is provided with a threaded groove 41, and the top of the threaded groove 41 is provided with an embedded circular groove 42. By installing a locking screw into the threaded groove 41, it abuts against the base insert. The locking screw can further enhance the connection strength between the moving spring and the base insert, preventing the moving spring from loosening during use. The embedded circular groove 42 can house the screw head, preventing the screw head from protruding and affecting the fit between the moving spring and other components.

[0050] Workflow: When using an easy-to-install moving spring, first take the moving spring to the installation position and align the insertion interface 2 of the fixed end 1 of the moving spring with the base insert. During the insertion process, the base insert first contacts the guide part of the inlet elastic clamping plate group 21. Under the action of the guide part, the inlet elastic clamping plate group 21 undergoes elastic deformation, and the base insert smoothly enters the clamping area of ​​the inlet elastic clamping plate group 21.

[0051] As the base insert continues to be inserted, the guide portions at both ends of the middle section fixed solid clamping piece group 22 further guide the base insert into the clamping area of ​​the clamping piece group. The middle section fixed solid clamping piece group 22, with its spacing of 0.5mm-1mm less than the thickness of the base insert, tightly clamps the base insert, enhancing the stability of the fixation.

[0052] Finally, under the guidance of the guide section, the base insert enters the clamping area of ​​the rear fixed solid clamping piece assembly 23, which also fixes the base insert with an interference fit. At this time, the locking screw is screwed into the threaded groove 41 on the fixing seat 4 until the locking screw abuts against the base insert, further locking the connection between the moving spring and the base insert, ensuring that the moving spring can be stably put into use;

[0053] After completing the above operations, the base insert end abuts against the inner end of the insertion interface 2, located between the upper and lower clamps of the middle fixed solid clamping plate group 22 and the rear fixed solid clamping plate group 23. The base insert abuts against the inner guide part of the entrance elastic clamping plate group to provide front-end limit. It will not detach from the insertion interface 2 without being subjected to excessive tension. However, it should be noted that this only applies to convex base inserts. If it is a long strip insert, the base insert abutting against the inner guide part of the entrance elastic clamping plate group to provide front-end limit cannot be achieved, and it will always be elastically clamped between the entrance elastic clamping plate groups 21.

[0054] When the moving spring is damaged and needs to be disassembled and replaced, loosen the locking screw and pull the moving spring. If it is stuck and difficult to disassemble, use a suitable disassembly tool (thin metal sheet), insert it into the base insert end through the disassembly slot 3, apply appropriate external force to the moving spring with the disassembly tool, and gradually pull the moving spring out of the base insert to complete the disassembly operation, and then replace it with a new moving spring.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A movable spring leaf for facilitating installation, comprising a movable spring leaf fixed end (1), characterized in that: The short side of the fixed end (1) of the moving spring blade is provided with a plug-in port (2), and the top end of the plug-in port (2) is provided with a disassembly groove (3) along the direction of the plug-in port (2); The plug-in port (2) is sequentially provided with an entrance elastic clamping piece group (21), a middle fixed solid clamping piece group (22) and a rear end fixed solid clamping piece group (23) along the plug-in direction, and the entrance elastic clamping piece group (21), the middle fixed solid clamping piece group (22) and the rear end fixed solid clamping piece group (23) are symmetrically arranged up and down; The upper clamping piece of the rear end fixed solid clamping piece group (23) is disconnected at the position corresponding to the disassembly groove (3); The disassembly groove (3) is provided with a fixed seat (4) at the position corresponding to the lower clamping piece of the rear end fixed solid clamping piece group (23).

2. A spring finger for facilitating mounting according to claim 1, wherein: The fixed end (1) of the moving spring blade is integrally formed with a transition section (11) away from the plug-in port (2), and the transition section (11) is connected to the main body of the moving spring blade.

3. The spring finger of claim 1, wherein: The top end of the fixed end (1) of the moving spring blade is designed to be thickened in the middle corresponding to the plug-in port (2).

4. The spring finger of claim 1, wherein: The width of the disassembly groove (3) is one-third to one-half of the width of the plug-in port (2), and the plug-in port (2) and the disassembly groove (3) have the same length.

5. The spring finger of claim 1, wherein: Both sides of the plug-in port (2) are provided with plug-in guide grooves (201).

6. The spring finger of claim 1, wherein: Both ends of the entrance elastic clamping piece group (21) are provided with guide portions, and the entrance elastic clamping piece group (21) and the inner wall of the plug-in port (2) are left with an elastic spacing (211), and the spacing of the entrance elastic clamping piece group (21) is smaller than that of the middle fixed solid clamping piece group (22) and the rear end fixed solid clamping piece group (23).

7. The spring finger of claim 1, wherein: The entrance elastic clamping piece group (21) is arranged on both sides of the disassembly groove (3), so that the width of the entrance elastic clamping piece group (21) is reduced to facilitate the insertion of the base plug-in piece.

8. The spring finger of claim 1, wherein: Both ends of the middle fixed solid clamping piece group (22) are provided with guide portions, and the rear end fixed solid clamping piece group (23) is provided with a guide portion towards the end of the middle fixed solid clamping piece group (22), and the spacing of the middle fixed solid clamping piece group (22) and the rear end fixed solid clamping piece group (23) is smaller than the thickness of the base plug-in piece by 0.5mm-1mm.

9. The spring finger of claim 1, wherein: The fixed seat (4) is provided with a threaded groove (41), and the top end of the threaded groove (41) is provided with an embedded circular groove (42), and by installing a locking screw into the threaded groove (41), the base plug-in piece is abutted, and the embedded circular groove (42) can internally accommodate the screw head.

Images