A push-pull connector

Abstract

The application provides a straight push-pull connector, and relates to the technical field of connectors, which comprises a socket and a plug. The socket comprises a socket shell, a socket terminal component, a camshaft gear component and a rack frame. The plug comprises an outer shell, a plug shell, a plug terminal component and a hook component. After the plug and the socket are connected, the straight insertion of the plug drives the rack frame, drives the gear engagement transmission, drives the rotation of the camshaft, drives the socket terminal component to expand and deform, gradually pushes the contact to the plug terminal component to realize the connection, and the hook component hooks the socket lock groove on the socket shell to realize the locking. After the locking, the camshaft does not pass the maximum diameter change, when the hook component is separated from the socket lock groove, the socket terminal component drives the camshaft to reset, the camshaft drives the gear to drive the rack frame to reset, and the rack frame drives the plug to pop out of the socket. The connector can be operated by one hand, does not tilt when pulled out, has less wear, the dirt of the contact component can be removed by plugging and unplugging, and the mistaken unlocking and mistaken locking are prevented.

Description

Technical Field

[0001] This invention relates to the field of connector technology, specifically to a push-pull connector. Background Technology

[0002] Currently, the high-density zero-insertion-force connector in the medical ultrasound field (patent CN104737382B) employs a method where, during plug insertion into the socket, the head and socket terminals do not contact each other, resulting in no friction between the terminals. After insertion, a wrench on the camshaft drives the camshaft to rotate. Simultaneously, the camshaft's rotation deforms the socket terminals, causing the contact points to press against the plug terminals. The camshaft has a gear hook, which enables two parallel camshafts to rotate synchronously. The hook is used to lock the pins on the plug, achieving a locking mechanism. In other words, the wrench drives the camshaft to rotate, the gear enables two camshafts to rotate synchronously, the socket terminals deform, and the socket contact points move towards the plug terminal contact surface. As the camshaft rotates, the cam drives the terminal deformation to gradually increase, leading to contact and positive pressure. This process is accompanied by the synchronous rotation of the gear hook locking the pins on the plug. Therefore, both terminal contact and head-socket locking are achieved through camshaft rotation. The process involves inserting the plug into the socket, then rotating the wrench to achieve terminal contact and head-socket locking. The wrench rotation has an angle requirement; after rotating a certain angle, the camshaft passes its maximum diameter change point, preventing automatic reset. This technical solution has the following disadvantages: 1. When doctors connect or remove the ultrasound probe from the main unit, the operation is cumbersome. To lock it, they need to insert it first and then turn the lever. To unlock it, they need to turn the lever first and then pull out the plug.

[0003] 2. Dust and other dirt in the air accumulate on the terminal surface over time, and the dirt at the contact points is difficult to remove. When there is dirt at the contact points, the positive pressure cannot pierce the dirt, resulting in poor conductivity.

[0004] 3. After unlocking, the plug is deeply embedded in the socket housing, and there is no resistance to pulling it out. Therefore, it is easy to pull it out at an angle when it is pulled out of the socket, resulting in uneven wear.

[0005] 4. If the wrench is accidentally touched, it can be easily unlocked.

[0006] 5. The socket can be locked by turning the wrench when the plug is not plugged in. This can easily lead to the plug being unable to be inserted into the socket after it is locked. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the present invention provides a push-pull connector that can be operated with one hand, does not tilt when pulled out, has less wear, and can remove dirt from the contact parts by plugging and unplugging, preventing false locking and false locking.

[0008] To achieve the above objectives, the technical solution adopted is: a push-pull connector, including a socket and a plug. The socket includes a socket housing, a socket terminal component, a camshaft gear component, and a rack frame. The camshaft gear component includes a camshaft and a gear that rotates synchronously on the camshaft. The socket housing has at least one cavity for installing the socket terminal component. The cavity is also equipped with a rack frame that can reciprocate along the mating direction. The rack frame meshes with the gear. The socket terminal component holds the camshaft in the middle. The socket housing is provided with a socket locking hook groove. The plug includes an outer shell, a plug housing, a plug terminal component, and a locking hook component. The plug housing and the locking hook component are installed inside the outer shell, and the plug terminal component and the locking hook component are assembled inside the plug housing. After the plug and socket are inserted, the pushing force of the plug being inserted directly is applied to the rack frame along the insertion direction. The rack frame drives the gear to mesh and drive the camshaft to rotate. The camshaft drives the socket terminal component to expand and deform outward, gradually pushing the contact point towards the plug terminal component to achieve connection. The locking hook component hooks onto the socket locking hook groove on the socket housing to lock it. After locking, the camshaft has not exceeded the maximum diameter change, and the socket terminal component stores elastic potential energy. When the locking hook component disengages from the socket locking hook groove, the socket terminal component drives the camshaft to reset, and the camshaft drives the gear to drive the rack frame to reset.

[0009] The socket also includes a metal fixing block and a screw A for positioning the camshaft gear component without affecting its rotation. The metal fixing block covers at least one end of the camshaft gear component, and the screw A fixes the metal fixing block to the socket housing. The metal fixing block and the socket housing are combined to form a rotating cavity for the rotation of the camshaft gear component.

[0010] The camshaft gear component and the socket terminal component are provided in two or more, with two adjacent gears on the same side meshing with each other or not meshing.

[0011] The locking hook component includes a locking hook strip, screw B, and a torsion spring. One end of the locking hook strip is a button, and the other end is a locking hook. The locking hook strip is fixed to the plug housing by screw B and torsion spring. The torsion spring keeps the locking hook strip in a locked state. Pressing the button unlocks the locking hook through the leverage of screw B. Releasing the button automatically resets the locking hook.

[0012] The bottom surface of the locking hook has a guiding slope.

[0013] The plug housing is provided with a shielding groove for forcibly installing the shielding pin.

[0014] The end of the socket terminal component is equipped with an insulating cover, and the two sides of the insulating cover are provided with windows for the socket terminal component to expand outward and contact the plug terminal component.

[0015] The top surface of the rack frame is the pushing surface, and the side surface is a rack adapted to the gear.

[0016] The maximum stroke of the rack frame moving in the insertion direction is equal to the maximum rotation angle of the camshaft.

[0017] The locking hook component has two sets, symmetrically arranged on both sides of the plug housing.

[0018] The beneficial effects of this invention are: 1. The rack and pinion transmission mechanism synchronizes the insertion and removal process with the camshaft rotation process, eliminating the cumbersome operation of turning a wrench to achieve terminal contact after insertion and removal. During the plug insertion process, the cam rotation drives the terminal deformation, and the deformation of the socket terminal gradually increases. From the beginning of insertion to the full insertion, the terminal goes from non-contact to contact, and then the contact force increases to the maximum. There will be a small displacement friction at the contact part, which can effectively remove dirt and will not cause rapid wear of the contact part, achieving a low insertion force effect. When pulling out, the positive pressure at the contact part gradually decreases until it no longer contacts, achieving a low pull-out force effect.

[0019] 2. The maximum stroke of the rack moving inward towards the socket housing is equal to the maximum angle of rotation of the drive gear shaft component. This prevents the cam from exceeding the maximum diameter high point. The terminal stores elastic potential energy to reset the cam. When the plug is unlocked, during the unplugging process, the rack, gear, and cam shaft automatically reset to their pre-plugging state under the action of the terminal's elastic potential energy. After unlocking, the terminal's rebound force drives the cam to rotate in the opposite direction, which in turn drives the rack to push the plug out of the socket housing a certain distance, assisting in the plug's removal from the socket housing. The cam shaft will not exceed its maximum diameter, and the cam shaft and gear components will not form a self-locking structure. The terminal will not pop out of the insulating cover before plugging in; even if it does, it will automatically reset back into the insulating cover.

[0020] 3. Easy to operate: push to lock, press to unlock, can be operated with one hand; the two locking hooks on both sides of the plug housing are kept locked by the action of torsion springs. The button must be pressed to release the locking hooks from the socket housing to unlock, which improves the safety of unlocking caused by accidental wrench use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the socket of the present invention; Figure 3 This is an exploded view of the socket of the present invention; Figure 4 This is a schematic diagram of the structure of the socket housing of the present invention; Figure 5 This is a schematic diagram of the rack frame of the present invention; Figure 6 This is a schematic diagram of the camshaft gear component of the present invention; Figure 7 This is a schematic diagram of the structure of the plug of the present invention; Figure 8 This is an exploded view of the plug of the present invention; Figure 9 This is a schematic diagram of the structure of the plug housing of the present invention; Figure 10 This is a schematic diagram of the locking hook bar of the present invention; Figure 11 This is a schematic diagram of the plug housing just contacting the socket rack frame of the present invention; Figure 12 This is a schematic diagram of the plug housing driving the rack frame to engage half of its stroke along the engagement direction according to the present invention; Figure 13 This is a schematic diagram of the plug housing of the present invention driving the rack frame into place along the insertion direction; Figure 14 This is a schematic diagram of the terminal state when the plug housing of the present invention just contacts the socket rack frame; Figure 15 This is a schematic diagram of the terminal state when the plug housing of the present invention drives the rack frame to engage half of its stroke along the engagement direction; Figure 16 This is a schematic diagram of the terminal state when the plug housing of the present invention is driven to the rack frame in the insertion direction. Figure 17 This is a schematic diagram of the locking mechanism during the insertion process of the present invention; Figure 18 A schematic diagram showing the locking mechanism in place when fully engaged; Figure 19 This is a front view of a single-gear drive socket; In the picture: 1. Socket; 1-1. Socket housing; 1-2. Socket terminal assembly; 1-3. Camshaft gear assembly; 1-4. Rack frame; 1-5. Metal fixing block; 1-6. Screw A; 1-1-1. Socket locking hook groove; 1-1-2. Insertion cavity; 1-3-1. Camshaft; 1-3-2. Gear; 1-4-1. Pushing surface; 1-4-2. Rack; 1-5-1. Rotating cavity; 2. Plug; 2-1. Outer shell; 2-3. Plug housing; 2-4. Locking hook assembly; 2-5. Shielding pin; 1-7. Insulating cover; 2-1-1. Upper housing; 2-1-2. Lower housing; 2-1-3. Screw C; 2-2-1. Shielding groove; 2-2-2. Plug locking hook groove; 2-2-3. Rack frame push structure; 2-4-1. Locking hook strip; 2-4-2. Screw B; 2-4-3. Torsion spring; 2-4-11. Button; 2-4-12. Locking hook; 2-4-121. Guide bevel. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0024] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0025] The orientations or positional relationships indicated by terms such as "up," "down," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," and "circumferential" in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0026] like Figures 1-19 As shown, a push-pull connector includes a socket 1 and a plug 2. The socket 1 includes a socket housing 1-1, a socket terminal component 1-2, a camshaft gear component 1-3, and a rack frame 1-4. The camshaft gear component 1-3 includes a camshaft 1-3-1 and gears 1-3-2 that are mounted on the camshaft 1-3-1 and rotate synchronously. The two ends of the camshaft 1-3-1 are round shafts, and the middle section is a cam. The camshaft can be integrally formed or assembled separately. When not engaged, the minimum diameter of the camshaft is perpendicular to the engagement direction. When only one set of socket terminal components 1-2 exists, two gears 1-3-2 are provided, respectively installed at both ends of the camshaft 1-3-1. Figure 2As shown, both the camshaft gear assembly 1-3 and the socket terminal assembly 1-2 are provided with two or more gears. Two adjacent gears 1-3-2 on the same side may mesh or not mesh. The reciprocating movement of each rack frame along the engagement direction can synchronously drive the two gears on the same side to rotate simultaneously. After assembly, the socket, rack frame, two gears on the same side, and two camshafts—if any one of them moves, the rest will move synchronously. For example... Figure 19 As shown, a gear can also be mounted on one end of the camshaft gear assembly, and each side of the rack frame can drive a camshaft gear assembly to rotate independently, so that the two camshaft gear assemblies will not rotate synchronously.

[0027] like Figure 4 As shown, the socket housing 1-1 has at least one cavity 1-1-2 for installing the socket terminal component 1-2. The number of cavities 1-1-1 is the same as the number of socket terminal components 1-2. The socket terminal component 1-2 consists of two rows of opposing elastic contact rows, each composed of multiple identical elastic contact elements. The opposing elastic contact rows remain in a closed state. A rack frame 1-4 capable of reciprocating along the mating direction is also installed within the cavity 1-1-2. The rack frame 1-4 meshes with a gear 1-3-2. A cam shaft 1-3-1 is held in the middle of the socket terminal component 1-2. The socket housing 1-1 has a socket locking hook groove 1-1-1, which is selected to be located on the inner or outer side of the socket housing 1-1 depending on the structure of the locking hook component 2-4.

[0028] like Figures 7-10 As shown, the plug 2 includes an outer shell 2-1, a plug housing 2-2, a plug terminal component 2-3, and a locking hook component 2-4. The outer shell 2-1 is assembled from an upper housing 2-1-1, upper and lower housings 2-1-2, and screws C2-1-3. The plug housing 2-2 and the locking hook component 2-4 are installed inside the outer shell 2-1. The plug terminal component 2-3 and the locking hook component 2-4 are assembled inside the plug housing 2-2. The plug terminal component 2-3 consists of two rows of terminal blocks arranged opposite each other, and each row of terminal blocks is composed of multiple identical contacts.

[0029] like Figure 3 , Figure 4 As shown, the socket 1 also includes a metal fixing block 1-5 and a screw A1-6 for positioning the camshaft gear component 1-3 without affecting its rotation. The metal fixing block 1-5 covers at least one end of the camshaft gear component 1-3, and the screw A1-6 fixes the metal fixing block 1-5 to the socket housing 1-1. The metal fixing block 1-5 and the socket housing 1-1 are assembled to form a rotating cavity 1-5-1 for the rotation of the camshaft gear component 1-3.

[0030] Figure 8 , Figure 10 , Figure 17 , Figure 18 The locking hook component 2-4 includes a locking hook strip 2-4-1, a screw B2-4-2, and a torsion spring 2-4-3. One end of the locking hook strip 2-4-1 is a button 2-4-11, and the other end is a locking hook 2-4-12. The locking hook strip 2-4-1 is fixed to the plug housing 2-2 by the screw B2-4-2 and the torsion spring 2-4-3. The torsion spring 2-4-3 keeps the locking hook strip 2-4-1 locked. Pressing the button 2-4-11, through the leverage of the screw B2-4-2, unlocks the locking hook 2-4-12. After releasing the button 2-4-11, the locking hook 2-4-12 automatically resets.

[0031] like Figure 10 As shown, the bottom surface of the locking hook 2-4-12 has a guiding slope 2-4-121. The guiding slope 2-4-121 can guide the hook over obstacles and into the locking hook groove 1-1-1 of the socket, making the insertion more reasonable.

[0032] like Figure 9 As shown, the plug housing 2-2 is provided with a shielding groove 2-2-1 for forcibly installing the shielding pin 2-5. The shielding groove 2-2-1 is located on the outside of the plug terminal component 2-3.

[0033] like Figure 14 , Figure 15 , Figure 16 As shown, an insulating cover 1-7 is installed at the end of the socket terminal component 1-2. The contacts of the socket terminal component 1-2 are recessed inside the insulating cover 1-7 to achieve the function of preventing finger touching. Windows are provided on both sides of the insulating cover 1-7 for the socket terminal component 1-2 to expand outward and contact the plug terminal component 2-3.

[0034] like Figure 5 As shown, the top surface of the rack frame 1-4 is the pushing surface 1-4-1. The plug housing 2-2 is provided with a rack frame pushing structure 2-2-3 that cooperates with the pushing surface 1-4-1. The side is a rack 1-4-2 that is adapted to the gear 1-3-2. The number of racks 1-4-2 is matched with the number of gears. If two adjacent gears 1-3-2 on the same side are each fitted with a rack 1-4-2 on their outer side.

[0035] The maximum stroke of the rack frame 1-4 in the insertion direction is equal to the maximum rotation angle of the camshaft 1-3-1.

[0036] like Figure 8 As shown, the locking hook component 2-4 is provided in two sets, symmetrically arranged on both sides of the plug housing 2-2. These two sides refer to the two sides of the arrangement length of the plug terminal component 2-3, which can ensure more stable locking and prevent accidental unlocking from one side.

[0037] like Figures 11-18As shown, after plug 2 and socket 1 are inserted, the pushing force of plug 2 being inserted directly along the insertion direction is applied to rack frame 1-4. Rack frame 1-4 moves down to drive gear 1-3-2 to mesh and drive, causing camshaft 1-3-1 to rotate. Camshaft 1-3-1 drives socket terminal component 1-2 to expand and deform outward, that is, the elastic terminal blocks deform outward respectively. Camshaft 1-3-1 will gradually push socket terminal component 1-2 out of socket housing 1-1. The distance between socket terminal component 1-2 and plug terminal component 2-3 gradually decreases. During the process before plug housing 2-2 is fully inserted, socket terminal component 1-2 will first contact plug terminal component 2-3. At this time, camshaft 1-3-1 has not yet rotated to the maximum position of driving terminal deformation. After being fully inserted, camshaft 1-3-1 continues to rotate. The normal pressure on the contact surface between plug terminal component 2-3 and socket terminal component 1-2 gradually increases, and the contact part produces a certain frictional displacement with the insertion distance of the plug.

[0038] When plug 2 is fully inserted, the locking hook component 2-4 also moves downwards until it hooks into the socket locking hook groove 1-1-1 on the socket housing, thus locking it in place. After locking, the camshaft 1-3-1 has not undergone its maximum diameter change, meaning the maximum diameter of the camshaft is not perpendicular to the insertion direction. The socket terminal component 1-2 stores the elastic potential energy for the camshaft 1-3-1 to rotate in the opposite direction. When two buttons 2-4-11 on the plug locking hook are pressed simultaneously with a finger, the locking hook component 2-4 disengages from the socket locking hook groove 1-1-1. The socket terminal component 1-2 then drives the camshaft 1-3-1 to reset, and the camshaft 1-3-1 drives the gear 1-3-2 to reset the rack frame 1-4.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit or restrict the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection declared by the present invention.

Claims

1. A push-pull connector, comprising a socket (1) and a plug (2), characterized in that: The socket (1) includes a socket housing (1-1), a socket terminal component (1-2), a camshaft gear component (1-3), and a rack frame (1-4). The camshaft gear component (1-3) includes a camshaft (1-3-1) and a gear (1-3-2) that rotates synchronously on the camshaft (1-3-1). The socket housing (1-1) has at least one cavity for installing the socket terminal component (1-2). The cavity (1-1-2) is also equipped with a rack frame (1-4) that can reciprocate along the mating direction. The rack frame (1-4) meshes with the gear (1-3-2). The socket terminal component (1-2) holds the camshaft (1-3-1) in the middle. The socket housing (1-1) is provided with a socket locking hook groove (1-1-1). The plug (2) includes an outer shell (2-1), a plug housing (2-2), a plug terminal component (2-3), and a locking hook component (2-4). The plug housing (2-2) and the locking hook component (2-4) are installed inside the outer shell (2-1), and the plug terminal component (2-3) and the locking hook component (2-4) are assembled inside the plug housing (2-2). After the plug (2) and socket (1) are inserted, the force of the plug (2) being inserted directly is applied to the rack frame (1-4) along the insertion direction. The rack frame (1-4) drives the gear (1-3-2) to mesh and drive the camshaft (1-3-1) to rotate. The camshaft (1-3-1) drives the socket terminal component (1-2) to expand and deform outward, gradually pushing the contact towards the plug terminal component (2-3) to achieve connection. The locking hook component (2-4) hooks the socket locking hook groove (1-1-1) on the socket housing to achieve locking. After locking, the camshaft (1-3-1) has not passed the maximum diameter change, and the socket terminal component (1-2) stores elastic potential energy. When the locking hook component (2-4) is dislodged from the socket locking hook groove (1-1-1), the socket terminal component (1-2) drives the camshaft (1-3-1) to reset. The camshaft (1-3-1) drives the gear (1-3-2) to drive the rack frame (1-4) to reset.

2. The push-pull connector as described in claim 1, characterized in that: The socket (1) further includes a metal fixing block (1-5) and a screw A (1-6) for positioning the camshaft gear component (1-3) without affecting its rotation. The metal fixing block (1-5) covers at least one end of the camshaft gear component (1-3), and the screw A (1-6) fixes the metal fixing block (1-5) to the socket housing (1-1). The metal fixing block (1-5) and the socket housing (1-1) are assembled to form a rotating cavity (1-5-1) for the rotation of the camshaft gear component (1-3).

3. A push-pull connector as described in claim 1, characterized in that: The camshaft gear component (1-3) and the socket terminal component (1-2) are provided in two or more, and the two adjacent gears (1-3-2) on the same side are either meshed or not meshed.

4. A push-pull connector as described in claim 1, characterized in that: The locking hook component (2-4) includes a locking hook strip (2-4-1), a screw B (2-4-2), and a torsion spring (2-4-3). One end of the locking hook strip (2-4-1) is a button (2-4-11), and the other end is a locking hook (2-4-12). The locking hook strip (2-4-1) is fixed to the plug housing (2-2) by the screw B (2-4-2) and the torsion spring (2-4-3). The torsion spring (2-4-3) keeps the locking hook strip (2-4-1) locked. When the button (2-4-11) is pressed, the locking hook (2-4-12) is unlocked by the leverage of the screw B (2-4-2). When the button is released, the locking hook (2-4-12) automatically resets.

5. A push-pull connector as described in claim 4, characterized in that: The bottom surface of the lock hook (2-4-12) has a guide slope (2-4-121).

6. A push-pull connector as described in claim 1, characterized in that: The plug housing (2-2) is provided with a shielding groove (2-2-1) for forcibly installing the shielding pin (2-5).

7. A push-pull connector as described in claim 1, characterized in that: An insulating cover (1-7) is installed at the end of the socket terminal component (1-2), and windows are provided on both sides of the insulating cover (1-7) for the socket terminal component (1-2) to extend outward and contact the plug terminal component (2-3).

8. A push-pull connector as described in claim 1, characterized in that: The top surface of the rack frame (1-4) is the pushing surface (1-4-1), and the side surface is the rack (1-4-2) adapted to the gear (1-3-2).

9. A push-pull connector as described in claim 1, characterized in that: The maximum stroke of the rack frame (1-4) moving in the insertion direction is equal to the maximum rotation angle of the camshaft (1-3-1).

10. A push-pull connector as described in claim 1, characterized in that: The locking hook component (2-4) is provided in two sets, symmetrically arranged on both sides of the plug housing (2-2).

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