Spiral buckle socket capable of instantaneously reducing torque and electric connector

Abstract

The utility model discloses a spiral buckle socket capable of instantly reducing torque and an electric connector, belongs to the technical field of electric connectors, and solves the technical problem that the locking stage of the conventional spiral buckle electric connector is laborious. The spiral buckle socket comprises a socket main body, a spiral groove is arranged on the peripheral surface of the socket main body, the spiral groove comprises an insertion pushing section, a resistance impact reduction section and a clamping groove section, and the resistance impact reduction section is a plane perpendicular to the axial direction of the socket. Friction torque resistance is instantly reduced by arranging an impact section plane, impact kinetic energy is formed through direct conversion from an inclined plane to the plane, the guide block is assisted to smoothly cross the clamping convex part to enter the buckling groove, and the problem that labor is wasted in the clamping and locking stage is fundamentally solved. The technical scheme is simple in structure, convenient to operate, reliable and stable, is suitable for various spiral buckle type electric connectors, and has a wide application prospect.

Description

TECHNICAL FIELD

[0001] The utility model relates to spiral bayonet electric connector technical field, specifically is a kind of instantaneous torque reduction spiral buckle socket and the electric connector comprising the socket. BACKGROUND

[0002] Electric connector is a kind of component for connecting electronic equipment, can realize the electrical connection and signal transmission between electronic equipment. It is mainly composed of plug and socket two parts: plug end is equipped with conductive pin, socket is equipped with the conductive socket of pin adaptation in it. When plug is inserted with socket, pin and socket are in close contact, ensure the smooth transmission of current or signal.

[0003] The connection mode of electric connector mainly has screw connection, buckle connection and spiral buckle connection and so on. Among them, spiral buckle connection integrates buckle locking and spiral propulsion characteristics, has the advantages of simple operation, rapid connection and stable and reliable, application is more common.

[0004] However, in actual operation, spiral buckle connection often encounters the problem of laborious operation when being inserted to buckle locking stage. Specifically, in the process of insertion (see Figure 4 ), operator needs to exert rotating force (propulsion force) to make guide block move along spiral groove. With the increase of plug insertion depth, the contact area between pin and socket also expands, resulting in the continuous increase of insertion friction force between them.

[0005] When guide block rises along the spiral rising slope of spiral groove to the card convex part, operator not only needs to overcome the friction force of the increasing contact area between pin and socket, but also needs to overcome the blocking force generated by card convex part, to push the card block over the card convex part into the card slot and complete locking action. Therefore, in the buckle locking stage, operator needs to cope with the double resistance of friction force and buckle convex part, and exert greater rotating torque to complete the final insertion and locking of socket and plug in place.

[0006] For this problem, the industry adopts the following solutions: optimizing the shape of buckle convex part, reducing the rising slope of spiral guide groove, reducing the depth or width of buckle slot, selecting low-friction coefficient material and increasing auxiliary device. However, these measures are relatively "passive", only play a role in alleviating, and cannot fundamentally solve the "double resistance" problem (i.e. insertion friction force and buckle convex part resistance) existing when spiral buckle connection is inserted to buckle locking stage. INVENTION CONTENTS

[0007] In view of the above technical problem that large torque is required when the connector is inserted and clamped, the utility model provides a socket and electric connector which can quickly reduce the torque resistance in the buckle stage and help to overcome the card convex part.

[0008] The technical scheme of the utility model discloses

[0009] A spiral buckle socket of instantaneous torque reduction, including socket main part, socket main part peripheral surface is equipped with helical groove, helical groove includes insert push tight section, drag reduction impact section and card slot section, insert push tight section is helical rising slope, is used for guiding plug to enter socket.

[0010] Further, the card convex part is a card pin, and the card pin is embedded in the socket main body.

[0011] Further, the length L of the drag reduction impact section (2-2) is greater than:

[0012]

[0013] Wherein, R represents the radius of the guide block, r represents the radius of the card pin, and y represents the height of the card pin extending out of the drag reduction impact section plane.

[0014] Further, the socket main body peripheral surface is provided with three helical grooves at equal intervals to increase uniformity and stability.

[0015] Further, the length of the helical groove is less than two-thirds of the circumference of the socket, and the vertical distance between the head and tail of the helical groove is less than two-thirds of the height of the socket.

[0016] Further, the helical groove can be arranged on the inner or outer circumferential surface of the socket main body to meet different connection requirements.

[0017] An electrical connector comprises the spiral buckle socket of instantaneous torque reduction, a plug and a connecting nut, the connecting nut is provided with a guide block matched with the helical groove, used for guiding the plug to be inserted into the socket, and the card slot of the helical groove is used for realizing buckle connection.

[0018] Compared with the prior art, the utility model has the beneficial effects that:

[0019] 1. Solve the double resistance problem. By setting the drag reduction impact section, the insertion friction and the resistance of the card convex part are decomposed into two independent forces to overcome, which fundamentally solves the difficult problem of laborious insertion in the traditional buckle stage.

[0020] 2、Shorten the insertion time and improve the insertion efficiency. The kinetic energy accumulated in the insertion and pushing segment is effectively utilized in the drag reduction impact segment, which is converted into energy to overcome the resistance of the buckle convex part, thereby improving the insertion efficiency. The multiple impact forces enable the guide block to quickly pass through the buckle convex part, thereby shortening the insertion time and improving the insertion efficiency.

[0021] 4、Easy operation and improved user experience: the improved design reduces the resistance feeling during operation, provides better tactile feedback, and the insertion process is smoother. The operator does not need to exert excessive rotational force to complete the insertion locking, the operation difficulty is significantly reduced, and the user's use experience is improved.

[0022] 5、Reduced component wear and prolonged service life. The instantaneous reduction of friction and the effective use of impact force reduce the wear of components during the insertion process, thereby prolonging the service life of the connector.

[0023] 6、Simple structure easy to promote: without complex auxiliary devices or expensive materials, only a flat groove is added to the original structure, or the end of the spiral groove is changed to a flat surface, which is simple and practical. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic view of the socket structure of the present application;

[0025] Figure 2 is a force receiving local enlarged view of the spiral groove buckle of the present application;

[0026] Figure 3 is a schematic view of the length calculation of the flat section of the spiral groove of the present application;

[0027] Figure 4 is a schematic view of the existing technology socket spiral groove structure and the force receiving of the pin.

[0028] Reference signs: 1, socket body; 2, spiral groove; 2-1, insertion and pushing segment; 2-2, drag reduction impact segment; 2-3, buckle groove segment; 2-4, buckle convex part; 3, guide block; L min , the shortest length of the drag reduction impact segment. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely in combination with the drawings of the application.

[0030] Example 1

[0031] As shown in Figure 1 , a spiral buckle socket with instantaneous torque reduction includes a socket body 1, and a spiral groove 2 is formed on the circumference of the socket body 1. The spiral groove 2 starts from the bottom end surface of the socket body 1 and extends upward along the circumference of the socket body 1.

[0032] Spiral groove 2 includes insertion and pushing section 2-1, drag reduction impact section 2-2 and card slot section 2-3. Among them:

[0033] Insertion and pushing section 2-1 is a spiral upward slope, used to guide the guide block 3 (such as steel ball, roller, etc.) on the connecting nut to move along the path of the spiral groove, drive the plug to enter the socket smoothly, and realize the insertion of the plug and the socket.

[0034] Drag reduction impact section 2-2 is a plane perpendicular to the central axis of the socket body 1. It is used to decompose the insertion friction in the insertion process, quickly eliminate the insertion torque resistance, and use the kinetic energy accumulated by the insertion and pushing section 2-1 to generate impact force to help the guide block plug to smoothly pass through the card convex part and enter the card insertion section. When entering the card buckle stage, the straight plane can reduce the required rotating force, eliminate the insertion force, and instantaneously reduce the torque resistance, so as to accumulate kinetic energy and impact force for passing through the card convex part.

[0035] Card slot section 2-3 is used to fix the connection of the plug and the socket, prevent the plug from accidentally falling off when subjected to external force, and ensure the stability and reliability of the connection.

[0036] The card slot section 2-3 entrance is provided with a card convex part 2-4, which has: 1. Feedback effect: when the card block of the plug connection ring passes through the card convex part, it will emit obvious "click" sound or produce hand feeling feedback, prompting the operator that the connector has been correctly inserted and locked. 2. Positioning effect: when the card block reaches the end of the spiral groove, the card convex part will block the card block, ensuring that the card block can only pass through the card convex part into the card slot after rotating in place. 3. Locking effect: when the guide block passes through the card convex part and falls into the card slot, the card convex part will play the role of "stop block", preventing the card block from moving backward, thereby realizing the reliable locking of the plug and the socket.

[0037] Drag reduction impact principle:

[0038] Reference Figures 1-3 When the plug is inserted into the socket, the guide block 3 moves along the insertion and pushing section 2-1 (i.e. spiral upward slope). Under the action of the rotating pushing force F 推 exerted by the operator, the guide block 3 advances towards the inside of the socket. This process needs to overcome the slope friction force F 斜面 and the insertion friction force F 插合 of the plug into the socket. As the rotating pushing force F 推 increases, the guide block advancing speed increases, and the accumulated kinetic energy E k increases (E k = mv 2 , m is the mass of the guide block, and v is the speed of the guide block).

[0039] When the guide block 3 enters the drag reduction impact section 2-2, the slope suddenly changes to a plane, at which time the guide block 3 is no longer constrained by the slope friction force, and the insertion friction force F插合 It instantly decreases to almost zero. Due to the extremely small frictional resistance of the plane, the rotational thrust F... 推 Almost all of it is used to accelerate the guide block, causing a significant increase in the speed of guide block 3, which in turn increases its kinetic energy, thereby generating an impact force F= = (Δp is the change in momentum, Δv is the change in velocity, and Δt is the time interval). This impact force helps guide block 3 overcome the resistance of the protrusion at the entrance of the slot section.

[0040] The specific components of impact force:

[0041] (1) The rotational thrust F that continues in the insertion and tightening section max推 Due to the "lag" effect in operator reaction time and muscle adjustment, when the guide block enters the drag-reducing impact section, the rotational thrust F applied at the end of the insertion and tightening section 2-1... 推 It will continue to exist, representing the maximum value F of the rotational thrust at the end of the insertion and tightening section. max推 .

[0042] (2) The kinetic energy conversion force F accumulated in the insertion and pressing section 能1 : The kinetic energy ΔE accumulated by the guide block in the insertion and tightening section k1 Converted into kinetic energy conversion force F 能1 .

[0043] F 能1 =ΔE k1 / L1=m(v1 2 -v0 2 ) / 2 L1, where v0 is the initial velocity of the guide block when it enters the insertion and tightening section (usually close to 0), and v1 is the final velocity of the guide block when it leaves the insertion and tightening section.

[0044] (3) The kinetic energy conversion force F accumulated in the drag reduction impact section 能2 The kinetic energy ΔE accumulated by the guide block due to velocity changes in the drag-reducing impact section. k2 The kinetic energy conversion force F obtained by the transformation 能2 .

[0045] F 能2 =ΔE k2 / L2=m(v2 2 -v1 2 ) / 2L2, where v1 is the initial velocity of the guide block when it enters the drag reduction impact section, and v2 is the final velocity of the guide block when it leaves the drag reduction impact section.

[0046] Total impact force F 冲击 =F max推 +F 能1 +F 能2 =F max推 +ΔE k1 / L1=m(v1 2 -v0 2 ) / L1+ΔE k2 / L2=m(v2 2 -v1 2 ) / 2L2.

[0047] Finally, the guide block impacts and passes through the card protrusion 2-4 at the entrance of the card slot section 2-3 by means of rotational thrust, kinetic energy conversion force of insertion and tightening section and kinetic energy conversion force of drag reduction impact section, and enters the card slot to complete the positioning and locking.

[0048] Unlike existing technologies that rely solely on the operator's rotational thrust to overcome the locking protrusions 2-4 while simultaneously needing to overcome mating friction, the impact force generated by this invention benefits from the assistance of multiple kinetic energies. Furthermore, when overcoming the locking protrusions, only this single resistance needs to be overcome. These multiple impact forces provide sufficient power to the guide block, helping it overcome the obstruction of the locking protrusions, pass over them, and enter the slot, achieving reliable mating and locking of the plug and socket.

[0049] Advantages of this technical solution

[0050] 1. Significantly reduces operating force: The cleverly designed drag-reducing impact section decomposes the mating friction and the resistance of the locking protrusion. The operator does not need to overcome the dual resistance of mating friction and the blocking of the locking protrusion at the same time, solving the problem of the laborious locking stage of the traditional design.

[0051] 2. Efficient Energy Utilization. In traditional designs, the kinetic energy accumulated during the insertion and tightening stage is partially consumed by friction and the resistance of the locking protrusion as the device approaches the locking stage, leading to operational difficulties. This design, however, utilizes a drag-reducing impact section to convert the kinetic energy previously consumed by friction into effective energy to overcome the resistance of the locking protrusion, thus improving energy utilization efficiency.

[0052] 3. Improved connection reliability: The greater impact force helps the guide block to stably and smoothly pass over the card protrusion and enter the card slot, avoiding situations where the plug is not properly inserted, damaged during insertion, or accidentally loosened and fallen off due to difficult operation. This reduces the risk of insertion failure and improves the stability and reliability of the plug and socket connection.

[0053] 3. Reduced mating torque requirements. Because the drag-reducing impact section effectively eliminates frictional resistance and instantly reduces mating torque resistance, the external force required during mating can be significantly reduced. This makes plug-socket mating easier, lowers the requirements on operators or mating equipment, and also reduces potential damage to plugs and sockets caused by excessive mating torque.

[0054] 4. Reduced component wear and damage, extending the service life of electrical connectors. In traditional designs, friction and the resistance of the locking protrusion act together in the same stage, requiring strong force to overcome. This design addresses these two resistance factors separately. Friction is eliminated first in the drag-reducing impact section, and then kinetic energy and impact force are used to overcome the resistance of the locking protrusion. This makes the mechanical changes throughout the mating process more rational, helping to extend the service life of electrical connectors and reduce component wear and damage caused by excessive operating force.

[0055] 5. Improved ease of operation and user experience. In traditional spiral snap-fit ​​connections, the operator noticeably feels a sudden increase in operating resistance when inserting the plug to the locking stage, requiring additional force. This causes psychological stress and operational inconvenience for the operator. However, in this design, the guide block easily overcomes the locking protrusion during insertion using kinetic energy and impact force. The operator will feel a sudden reduction in operating resistance in the resistance-reducing impact section, and may even be unable to feel the presence of the locking protrusion. The entire operation is smooth and natural, conforming to ergonomic principles, and greatly improving operator satisfaction.

[0056] Example 2

[0057] See Figures 2 and 3. In this embodiment, the latching protrusion is a latching pin, which is fitted into the socket body. The advantages are: 1. High durability: The latching pin is made of metal or high-strength materials, possessing high wear resistance and corrosion resistance. It is not easily damaged or deformed during long-term use, ensuring the socket's durability and reliability. 2. Stress dispersion: The latching pin, embedded in the socket body, disperses the stress generated during the rotation of the latching block onto the socket body, rather than concentrating it on the latching protrusion itself. This reduces localized wear on the latching protrusion and extends its service life. 3. Replaceable and easy to maintain: As an independent component, the latching pin can be replaced individually if worn, without replacing the entire socket, resulting in low maintenance costs and further extending the overall lifespan of the socket. 4. Optimized materials: The latching pin uses high-hardness, high-wear-resistant materials (such as stainless steel or special alloys), while the socket body uses lower-cost materials. This reduces costs and improves the durability of key components. 5. Flexible latching pin design: The size and shape can be adjusted according to different needs to adapt to various plug types.

[0058] Example 3

[0059] Referring to Figure 3, in this embodiment, the length L of the drag-reducing impact section needs to satisfy:

[0060] L>

[0061] Where R represents the radius of the locking block; r represents the radius of the locking pin; and y represents the height of the locking pin extending out of the plane of the impact-reducing section 2-2.

[0062] 1. The length L of the drag-reducing impact section must be greater than the value in this formula to ensure that the mating friction and the resistance of the locking protrusion do not act on the guide block (locking pin) simultaneously. 2. Ensure kinetic energy accumulation and impact force generation. In the insertion and tightening section, the plug enters the socket along the spiral upward ramp, gradually increasing its speed and accumulating kinetic energy. When entering the drag-reducing impact section, since this section is a plane perpendicular to the central axis of the socket body, the direction of the plug's movement suddenly changes, and the accumulated kinetic energy is converted into impact force, helping the guide block overcome the locking protrusion. If the drag-reducing impact section is insufficiently long, the kinetic energy cannot be fully converted into impact force, and the resistance of the guide block remains high. 3. Eliminate mating friction resistance. One of the functions of the drag-reducing impact section is to eliminate friction resistance during the mating process, instantly reducing the mating torque resistance. Sufficient length ensures that the plug can fully reduce resistance within this section and smoothly transition to the locking section, avoiding mating difficulties or damage to the plug and socket due to excessive friction resistance. 4. Optimize impact force: An appropriate length helps to effectively convert the kinetic energy accumulated in the insertion and tightening section into impact force, ensuring that the locking block smoothly enters the locking section.

[0063] Example 4

[0064] In this embodiment, the main body of the socket is provided with three or more spiral grooves 2 at equal intervals on its circumference. The advantages are: (1) Uniform force distribution, avoiding stress concentration: The three spiral grooves make the force on the plug evenly distributed during the insertion process, avoiding single point or local stress concentration, thereby reducing the wear of the plug and socket and extending the service life. (2) Automatic centering, more precise connection: The principle of three forces convergence ensures that the plug is automatically adjusted to the center position during the insertion process, avoiding poor contact or damage caused by eccentric insertion, and improving the reliability and safety of the connection. (3) Torque decomposition, easier insertion and removal: The three spiral grooves decompose the torque when the plug is inserted into multiple directions of force, reducing the force required for insertion and removal, and reducing the risk of hand fatigue and product damage. (4) Enhanced stability: The three forces balance makes the plug stable after insertion, not easy to loosen or fall off, further improving the stability of the connection.

[0065] Example 5

[0066] In this embodiment, the length of the spiral groove 2 is less than two-thirds of the socket's circumference, reducing the rotation angle and operational resistance, making operation simpler. The vertical distance between the beginning and end of the spiral groove is less than two-thirds of the socket's height, reducing the angle at which the plug guide block needs to climb during movement, making operation more effortless, reducing mechanical wear on the socket and plug, and extending their service life.

[0067] Example 6

[0068] In this embodiment, the spiral groove 2 is provided on the inner or outer circumferential surface of the socket body. This allows for a more flexible and versatile connector suitable for plugs with corresponding outer or inner circumferential surface locking blocks, thus broadening its application range.

Claims

1. A spiral snap-fit ​​socket with instantaneous torque reduction, characterized in that: The socket body (1) includes a spiral groove (2) on its circumference. The spiral groove (2) includes an insertion and pressing section (2-1), a drag-reducing impact section (2-2), and a slot section (2-3). The insertion and pressing section (2-1) is a spirally rising inclined surface. The drag-reducing impact section (2-2) is a plane perpendicular to the central axis of the socket body (1). The slot section (2-3) has a locking protrusion (2-4) at its inlet.

2. The spiral snap-fit ​​socket with instantaneous torque reduction according to claim 1, characterized in that: The protruding part (2-4) is a locking pin, which is fitted into the socket body (1).

3. The spiral snap-fit ​​socket with instantaneous torque reduction according to claim 2, characterized in that: The length L of the drag-reducing impact section (2-2) is greater than: Where R represents the radius of the guide block; r represents the radius of the locking pin; and y represents the height of the locking pin extending out of the plane of the drag-reducing impact section.

4. The spiral snap-fit ​​socket with instantaneous torque reduction according to claim 1, characterized in that: The socket body (1) has three spiral grooves (2) evenly spaced around its perimeter.

5. The spiral snap-fit ​​socket with instantaneous torque reduction according to claim 1, characterized in that: The length of the spiral groove (2) is less than two-thirds of the circumference of the socket, and the vertical distance between the beginning and end of the spiral groove (2) is less than two-thirds of the height of the socket.

6. The spiral snap-fit ​​socket with instantaneous torque reduction according to claim 1, characterized in that: The spiral groove (2) is provided on the inner or outer circumferential surface of the socket body (1).

7. An electrical connector comprising a spiral snap-fit ​​socket with instantaneous torque reduction as described in any one of claims 1 to 6.

8. The electrical connector according to claim 7, characterized in that: It includes a plug and a connecting nut, the connecting nut having a guide block (3) that matches the spiral groove (2) for guiding the plug into the socket and using the slot of the spiral groove to achieve a snap-fit ​​connection.

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