A vacuum milk claw connector for dairy farming

Abstract

The application discloses a vacuum milk suction device plug connector for cow breeding, which comprises a main body assembly, a fixing seat, a mounting shell connected to the front side of the fixing seat, a plug connecting assembly, a plug connecting seat connected in the mounting shell, connecting grooves respectively formed in the left and right ends of the plug connecting seat, a support plate fixedly connected to the plug connecting seat at the connecting grooves, a transmission shaft rotatably connected to the support plate and capable of moving up and down, a push-pull block connected to the lower part of the transmission shaft and capable of moving up and down, the transmission shaft being rotatably connected to the push-pull block, a lower clamping block slidably connected to the end of the push-pull block away from the corresponding transmission shaft in the left and right directions, and the lower clamping block being slidably connected to the plug connecting seat, when the plug is pushed into the plug connecting seat, the two lower clamping blocks move towards the direction of the plug to clamp the plug; the application can improve the reliability of the connection between the plug and the plug connecting seat and reduce the occurrence of poor contact.

Description

Technical Field

[0001] This invention relates to the field of electrical equipment technology for dairy farming, and in particular to a plug connector for a vacuum milk pump used in dairy farming. Background Technology

[0002] In existing technology, the plug connector for a vacuum milk pump used in dairy farming includes a fixed base. The front end of the fixed base has two recessed slots spaced apart in the left-right direction. A mounting housing is fixedly connected to the front end of the fixed base. The rear end of the mounting housing has two recessed slots spaced apart in the left-right direction. A plug connector is connected to the mounting housing via these recessed slots. The rear end of the plug connector can be forcefully inserted into the corresponding recessed slot. The plug connector has an arc-shaped slot. The plug connector at the slot is elastic. During use, the plug is inserted into the plug connector from bottom to top through the slot. The slot deforms elastically under the action of the plug. After milking, the operator removes the plug downwards from the plug connector. This structure relies on the elasticity of the plug connector at the slot to keep the plug engaged. Over time, the deformation at the plug connector is not easily reversed, and the plug is prone to loosening after insertion, leading to poor contact when powered on. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems mentioned above and / or existing plugs and plug connectors, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is that in the prior art, the plug is prone to loosening when the plug and plug connector are connected, which affects the power transmission effect. The present invention can improve the reliability of the connection between the plug and plug connector, improve the power transmission effect, and reduce the occurrence of poor contact.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a plug connector for a vacuum milking device used in dairy farming, comprising,

[0007] The main component includes a fixing base, with two recessed slots spaced apart in the left and right directions at the front end of the fixing base, and a mounting housing connected to the front side of the fixing base, with two mounting slots spaced apart in the left and right directions at the rear end of the mounting housing.

[0008] A plug connection assembly includes a plug connector base connected to a mounting housing via a mounting recess. At the rear end of the plug connector base, there are two front insertion recesses corresponding to the rear insertion recess. The front and rear insertion recesses form a socket for plugging in a plug. Connecting recesses are formed on the left and right sides of the front insertion recesses on the plug connector base. A support plate is fixedly connected to the plug connector base at the connecting recess. A drive shaft capable of vertical movement is rotatably connected to the support plate. A sliding groove is formed on the plug connector base between the front insertion recess and the connecting recesses. A vertically movable push-pull block is connected to the lower part of the drive shaft, which is rotatably connected to the push-pull block. A lower clamping block capable of sliding left and right is slidably connected to the end of the push-pull block away from the corresponding drive shaft in the left-right direction. The lower clamping blocks are slidably connected to the plug connector base via the sliding groove. When the plug is pushed upward into the socket, the two lower clamping blocks move in the direction of the plug. The end of the lower clamping block away from the push-pull block in the left-right direction can fit against the outer edge of the plug.

[0009] As a preferred embodiment of the plug connector for a vacuum milk pump used in dairy farming in this invention, the push-pull block has a first inclined surface at one end away from the corresponding drive shaft in the left-right direction, a first slide rail is fixed on the push-pull block at the first inclined surface, a first sliding groove corresponding to the first slide rail is opened on the lower clamping block, the lower clamping block is slidably connected to the first slide rail via the first sliding groove, and a vertically arranged first sliding groove is opened on the plug connector at one end away from the socket in the left-right direction, and the push-pull block can slide up and down along the first sliding groove.

[0010] As a preferred embodiment of the plug connector for a vacuum milk pump used in dairy farming in this invention, the following features are provided: a first return spring is mounted on the drive shaft; a drive gear is connected to the drive shaft on the lower side of the support plate; the drive gear is rotatably connected to the support plate; the drive shaft can slide along the drive gear and drive the drive gear to rotate; the first return spring is connected between the drive gear and the limiting step at the lower part of the drive shaft; a drive rack that can slide left and right and cooperates with the drive gear is connected to the plug connector above the push-pull block; the side of the drive rack opposite the plug hole in the left and right direction can be tightly fitted to the outer edge of the plug; a spiral groove is opened on the outer circumference of the drive shaft; and a rotating drive column that just inserts into the spiral groove is fixedly connected to the support plate.

[0011] As a preferred embodiment of the plug connector for a vacuum milk pump used in dairy farming in this invention, the plug connector at the front end of the transmission rack has a second sliding groove horizontally arranged in the left-right direction. The front end of the transmission rack is fixed with a sliding part that can slide left and right along the second sliding groove. The plug connector at the front end of the second sliding groove has a second sliding groove. The front end of the sliding part is slidably connected to a sliding block that can slide back and forth along the second sliding groove. The sliding block has a third sliding groove at one end opposite to the corresponding insertion hole in the left-right direction. The sliding block is slidably connected to a limiting block that restricts the movement of the rack through the third sliding groove. A second return spring is connected between the side of the limiting block away from the front insertion groove in the left-right direction and the plug connector. When the limiting block is in the second sliding groove, the second return spring is in a compressed state. When the rear side of the limiting block leaves the second sliding groove, the limiting block is pushed out of the second sliding groove under the action of the second return spring, and the rear side of the limiting block is attached to the front side of the plug connector.

[0012] As a preferred embodiment of the plug connector for a vacuum milk pump used in dairy farming in this invention, it further includes a reset assembly. The reset assembly includes two movable plates connected to the mounting housing and capable of moving in the front-back direction. The rearward end of the movable plate has two snap-fit ​​grooves that correspond one-to-one with the second sliding groove. The snap-fit ​​groove has a transmission groove on the movable plate at one end relative to the center of the movable plate in the left-right direction. The limiting block has a second inclined surface on the side facing forward relative to the direction of the insertion hole in the left-right direction. The movable plate can be attached to the second inclined surface via the transmission groove. When the movable plate moves in the direction of the plug connector, that is, moves backward, the movable plate can push the limiting block into the insertion groove via the second inclined surface.

[0013] As a preferred embodiment of the plug connector for a vacuum milk pump used in dairy farming in this invention, the reset assembly further includes two transmission screws rotatably connected to the mounting housing, a movable plate threadedly connected to the transmission screws, and two sets of guide rods corresponding one-to-one with the movable plate fixed at the front end of the plug connector, with the movable plate slidably connected to the corresponding set of guide rods.

[0014] As a preferred embodiment of the plug connector for a vacuum milk pump used in dairy farming in this invention, the front end of the transmission screw is outside the mounting housing, and several transmission handles are arranged around the outer periphery of the transmission screw outside the mounting housing.

[0015] In a preferred embodiment of the plug connector for a vacuum milk pump used in dairy farming according to the present invention, the following features are provided: a non-circular insertion hole is provided at the downward-facing end of the drive shaft, and a circular limiting groove is provided on the drive shaft above the insertion hole; the plug includes a conductive transmission part that can abut against the lower side of the mounting housing; a central conductive rod is fixed at the center of the upper end of the conductive transmission part; the central conductive rod can be inserted into the corresponding insertion hole; intermediate conductive parts are fixed at the upper ends of the left and right sides of the central conductive rod; and the upper ends of the intermediate conductive parts are fixed... A fall-prevention conductive part is provided that can extend into the limiting groove through the insertion hole. When the upper side of the fall-prevention conductive part abuts against the drive shaft on the upper side of the limiting groove, the lower side of the fall-prevention conductive part is flush with the lower side of the limiting groove. The lower side of the fall-prevention conductive part can fit against the drive shaft on the upper side of the insertion hole. When the limiting block is pushed out by the second reset spring and the rear side of the limiting block fits against the front side of the plug connector, the fall-prevention conductive part and the insertion hole are staggered, and the lower side of the fall-prevention conductive part fits against the drive shaft on the lower side of the limiting groove.

[0016] In a preferred embodiment of the plug connector for a vacuum milk pump used in dairy farming in this invention, when the rear side of the limiting block is attached to the front side of the plug connector, the front side of the locking groove is in front of the sliding block.

[0017] The beneficial effects of this invention are as follows: the plug is inserted into the plug connector through the socket, and the central conductive rod abuts against the transmission shaft on the upper side of the limiting groove. As the plug is pushed upward, the central conductive rod pushes the transmission shaft upward and rotates under the action of the rotating transmission column. The downward end of the transmission shaft rotates along the outer edge of the anti-fall conductive part through the limiting groove. The transmission shaft drives the transmission gear to rotate, and the transmission gear drives the transmission rack to move. The two transmission racks on the left and right sides of the socket move towards each other simultaneously. At the same time, the transmission shaft drives the push-pull block to move upward, and when the push-pull block moves upward, it drives the lower clamping block. Slide towards the direction of the central conductive rod, that is, the two lower clamping blocks on the left and right sides of the socket move towards each other simultaneously. The transmission rack drives the sliding part to move, and the sliding part slides forward along the second slide groove against the sliding block. Before the limiting block leaves the second slide groove, the second return spring is pressed by the limiting block and is in a compressed state. When the opposite sides of the two corresponding transmission racks abut against the outer edge of the central conductive rod, and the opposite sides of the two corresponding lower clamping blocks abut against the outer edge of the central conductive rod, the rear side of the limiting block just leaves the second slide groove, and the rear side of the limiting block is in contact with the outer edge of the central conductive rod. At the front of the plug connector, the sliding part cannot move further in the left and right directions due to the action of the limiting block, and the position of the drive shaft in the height direction is fixed. At this time, the anti-fall conductive part and the insertion hole on the lower side of the limiting groove are misaligned, that is, the anti-fall conductive part is not aligned with the insertion hole, and the lower side of the anti-fall conductive part abuts against the drive shaft on the upper side of the insertion hole. As long as the drive screw (which is insulated) is not rotated, the plug will not detach from the plug connector, and the plug and plug connector will always be tightly connected. When breastfeeding is not needed, the power supply needs to be disconnected. Furthermore, rotating the transmission handle causes the transmission screw to rotate, moving the moving plate backward. When the moving plate is in contact with the second inclined surface via the transmission groove, continuing to rotate the transmission screw causes the moving plate to continue moving downward. The moving plate pushes the limiting block into the insertion groove via the second inclined surface. Under the action of the first return spring, the transmission shaft moves downward. The transmission shaft rotates in the opposite direction, and the lower clamping block and transmission rack move away from the central conductive part. The transmission shaft pushes the plug downward, the first return spring resets, and the anti-fall conductive part falls through the insertion hole, allowing the plug to disengage from the plug connector for convenient operation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is the front view of the present invention.

[0020] Figure 2 for Figure 1 View from point AA.

[0021] Figure 3 for Figure 2 A magnified view of a section at point B.

[0022] Figure 4 This is a partial internal structural diagram of the present invention when the moving plate moves backward so that the front side of the transmission groove is attached to the second inclined surface.

[0023] Figure 5 This is a three-dimensional structural diagram of the mounting housing in the present invention when it is in a transparent state.

[0024] Figure 6 for Figure 5 A magnified view of a section at point C.

[0025] Figure 7 This is a 3D structural diagram of a plug inserted into a plug connector with the connector in a transparent state.

[0026] Figure 8 for Figure 7 A magnified view of a section at point D.

[0027] Figure 9 for Figure 7 A magnified view of a section at point E in the middle.

[0028] Figure 10 This is a partial internal structure diagram when the drive shaft is connected in the corresponding mounting groove.

[0029] Figure 11 This is a three-dimensional structural diagram of the plug in this invention.

[0030] Figure 12 This is a three-dimensional structural diagram of the present invention.

[0031] Figure 13 This is a partial three-dimensional structural diagram of the transmission shaft facing downwards in this invention.

[0032] Among them, 100 is the main component, 101 is the mounting housing, 101a is the mounting groove, 102 is the fixing seat, 200 is the plug connection assembly, 201 is the sliding block, 201a is the third sliding groove, 202 is the plug connection seat, 202a is the rear insertion groove, 202b is the second sliding groove, 202c is the second sliding groove, 202d is the sliding groove, 202e is the first sliding groove, 202f is the connecting groove, 203 is the transmission rack, 203a is the sliding part, 204 is the limiting block, 204a is the second inclined surface, 205 is the second return spring, 206 is the positioning plate, 207 is the push-pull block, 208 is the lower clamping block, 209 is the transmission shaft, 20 9a Insertion hole, 209b Limiting groove, 209c Limiting step, 210 Transmission gear, 211 Support plate, 212 First return spring, 213 Connecting sleeve, 213a Connecting part, 214 Rotating transmission column, 215 Limiting plate, 216 Second fixing plate, 217 First fixing plate, 300 Reset assembly, 301 Transmission screw, 301a Transmission handle, 302 Moving plate, 302a Snap-fit ​​groove, 302b Transmission groove, 302c Positioning step, 303 Guide rod, 400 Plug, 401 Conductive transmission part, 402 Central conductive rod, 403 Middle conductive part, 404 Anti-fall conductive part. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0036] Example 1

[0037] Reference Figure 1 , Figure 2 and Figures 7-9 This is the first embodiment of the present invention, which provides a plug connector for a vacuum milk pump used in dairy farming, which can improve the reliability of the connection after the plug 400 is inserted into the plug connector 202.

[0038] A connector for a vacuum milk pump plug 400 used in dairy farming includes a main body assembly 100, a fixing base 102, two recessed grooves 202a spaced apart in the left-right direction at the front end of the fixing base 102, a mounting housing 101 made of insulating material connected to the front side of the fixing base 102, two mounting grooves 101a spaced apart in the left-right direction at the rear end of the mounting housing 101, and a plug connection assembly 200 for connecting the plug 400 is installed inside the mounting housing 101.

[0039] Specifically, the plug connection assembly 200 includes a plug connector 202 connected to the mounting housing 101 via a mounting recess 101a for conducting electricity. The connection between the upper end of the plug connector 202 and the power-conducting device is prior art, and other power-conducting devices are not shown in this application. Two front insertion recesses, corresponding one-to-one with the rear insertion recess 202a, are opened at the rear end of the plug connector 202. The front insertion recesses and the rear insertion recesses 202a form a socket for inserting the plug 400. Connection recesses 202f are opened on the plug connectors 202 on the left and right sides of the front insertion recesses. A support plate 211 is fixedly connected to the plug connector 202 at the connection recess 202f, and a drive shaft 209 capable of moving up and down is rotatably connected to the support plate 211. In the left-right direction, a sliding groove 202d is opened on the plug connector 202 between the front insertion groove and the connecting groove 202f. The lower part of the drive shaft 209 is connected to a push-pull block 207 that can move up and down. The drive shaft 209 is rotatably connected to the push-pull block 207. The end of the push-pull block 207 away from the corresponding drive shaft 209 in the left-right direction is slidably connected to a lower clamping block 208 that can slide left and right. The lower clamping block 208 can be slidably connected to the plug connector 202 via the sliding groove 202d. When the plug 400 is pushed upward into the socket, the two lower clamping blocks 208 move in the direction of the plug 400 respectively. The end of the lower clamping block 208 away from the push-pull block 207 in the left-right direction can fit against the outer edge of the plug 400.

[0040] Specifically, the push-pull block 207 has a first inclined surface at the end furthest from the corresponding drive shaft 209 in the left-right direction. A first slide rail is fixed on the push-pull block 207 at the first inclined surface. A first sliding groove corresponding to the first slide rail is opened on the lower clamping block 208. The lower clamping block 208 is slidably connected to the first slide rail via the first sliding groove. A vertically set first sliding groove 202e is opened on the plug connector 202 at the end furthest from the socket in the left-right direction. The push-pull block 207 can slide up and down along the first sliding groove 202e. A first return spring 212 is fitted on the drive shaft 209. A drive gear 210 is connected to the drive shaft 209 on the lower side of the support plate 211. The drive gear 210 is rotatably connected to the support plate 211. The drive shaft 209 can slide along the drive gear 210 and drive the drive gear 210 to rotate. A connecting sleeve 2 is also fitted on the drive shaft 209. 13. The drive shaft 209 is rotatably connected to the connecting sleeve 213. The lower part of the drive gear 210 is rotatably connected to the connecting sleeve 213. The connecting sleeve 213 with the outer edge of the drive gear 210 facing outward has a connecting part 213a fixedly connected to the support plate 211, which restricts the up and down movement of the drive gear 210 and improves the reliability of the rotation of the drive gear 210. The first return spring 212 is connected between the drive gear 210 and the circular limit step 209c at the lower part of the drive shaft 209. The plug connector 202 above the push-pull block 207 is connected to a drive rack 203 that can slide left and right and cooperate with the drive gear 210. The side of the drive rack 203 opposite to the plug hole in the left and right direction can fit tightly against the outer edge of the plug 400. The outer periphery of the drive shaft 209 has a spiral groove. The support plate 211 is fixedly connected to a rotating drive column 214 that is just inserted into the spiral groove.

[0041] In this application, both the transmission rack 203 and the lower clamping block 208 are made of conductive material. The structure connecting the push-pull block 207 and the transmission shaft 209 is as follows: a limiting step 209c is fixed to the lower outer periphery of the transmission shaft 209; a first fixing plate 217 is fixed to the side of the push-pull block 207 away from the lower clamping block 208 in the left-right direction; the lower part of the transmission shaft 209 passes through the through hole in the center of the first fixing plate 217; the lower side of the limiting step 209c abuts against the upper side of the first fixing plate 217; a second fixing plate 216, fixedly connected to the first fixing plate 217, is fitted onto the transmission shaft 209 on the upper side of the limiting step 209c; the center of the plug 400 is aligned with the socket; the center of the plug 400 is inserted into the plug connector 202 from bottom to top through the socket; the two parts on the left and right sides of the plug 400 are respectively inserted... The plug 400 is inserted into the connecting grooves 202f on both sides of the insertion hole. The upper end of the plug 400 abuts against the lower end of the drive shaft 209. The plug 400 pushes the drive shaft 209 upward, and the first return spring 212 is compressed. The drive shaft 209 rotates under the action of the rotating drive column 214. The drive shaft 209 slides along the central sliding hole of the drive gear 210. At the same time, the drive shaft 209 drives the drive gear 210 to rotate. The drive shaft 209 pushes the push-pull block 207 upward. The drive gear 210 drives the drive rack 203 to move. The drive rack 203 moves towards the direction of the insertion hole. The push-pull block 207 pushes the clamping block 208 towards the direction of the insertion hole. When the clamping block 208 and the drive gear 210 are tightly attached to the outer edge of the center of the plug 400, the plug 400 can no longer be pushed upward.

[0042] Specifically, the plug connector 202 at the front end of the transmission rack 203 has a second sliding groove 202c horizontally arranged in the left-right direction. A sliding part 203a is fixed to the front end of the transmission rack 203, capable of sliding left and right along the second sliding groove 202c. A second sliding groove 202b is formed on the plug connector 202 at the front end of the second sliding groove 202c. A sliding block 201, capable of sliding back and forth along the second sliding groove 202b, is slidably connected to the front end of the sliding part 203a. A guide rail is fixed to the front end of the sliding part 203a. A guide groove corresponding to the guide rail is formed at the rearward end of the sliding block 201. The sliding block 201 is slidably connected to the guide rail via the guide groove. 1. A third sliding groove 201a is provided at one end of the corresponding socket in the left-right direction. The sliding block 201 is slidably connected to a limiting block 204 that restricts the movement of the rack through the third sliding groove 201a. A second return spring 205 is connected between the side of the limiting block 204 away from the front insertion groove in the left-right direction and the plug connector 202. When the limiting block 204 is in the second sliding groove 202b, the second return spring 205 is in a compressed state. When the rear side of the limiting block 204 leaves the second sliding groove 202b, the limiting block 204 is pushed out of the second sliding groove 202b under the action of the second return spring 205, and the rear side of the limiting block 204 is attached to the front side of the plug connector 202.

[0043] When the transmission rack 203 moves horizontally in the direction of the insertion hole, the transmission rack 203 drives the sliding part 203a to move. The sliding part 203a pushes the sliding block 201. When the rear side of the limiting block 204 is flush with the front side of the plug connector 202, that is, when the insertion groove is exposed in the plug connector 202, the limiting block 204 is pushed out under the action of the second return spring 205. The rear side of the limiting block 204 is attached to the front side of the plug connector 202. The sliding block 201 cannot move down under the action of the limiting block 204. The sliding part 203a cannot continue to move in the horizontal direction under the action of the sliding block 201. The position of the transmission rack 203 is fixed, and the transmission shaft 209 cannot continue to rotate. That is, the position of the lower clamping block 208 is also fixed at this time, which further improves the reliability of the connection between the plug 400 and the plug connector 202. The plug 400 and the plug connector 202 always maintain close contact.

[0044] Example 2

[0045] Reference Figures 3-6 This is the second embodiment of the present invention. This embodiment is based on embodiment 1 and provides a plug connector for a vacuum milk pump used in dairy farming, which can further improve the reliability of the connection between the plug 400 and the plug connector 202 after the plug 400 is inserted into the plug connector 202.

[0046] Specifically, the downward-facing end of the drive shaft 209 has a non-circular insertion hole 209a. A circular limiting groove 209b is formed on the drive shaft 209 above the insertion hole 209a. The plug 400 includes a conductive transmission part 401 that can abut against the lower side of the mounting housing 101. A central conductive rod 402 is fixed to the center of the upper end of the conductive transmission part 401. The central conductive rod 402 can be inserted precisely into the corresponding insertion hole 209a. Intermediate conductive parts 403 are fixed to the upper ends of the left and right sides of the central conductive rod 402. Anti-fall conductive parts 404, which can pass through the insertion hole 209a and extend into the limiting groove 209b, are fixed to the upper ends of the intermediate conductive parts 403. The upper side of the anti-fall conductive parts 404 abuts against the limiting groove 209b. When the drive shaft 209 on the upper side of 09b is on the drive shaft 209, the lower side of the anti-fall conductive part 404 is flush with the lower side of the limiting groove 209b. The lower side of the anti-fall conductive part 404 can fit against the drive shaft 209 on the upper side of the insertion hole 209a. When the limiting block 204 is pushed out by the second return spring 205, and the rear side of the limiting block 204 fits against the front side of the plug connector 202, the anti-fall conductive part 404 and the insertion hole 209a are staggered. The lower side of the anti-fall conductive part 404 fits against the drive shaft 209 on the lower side of the limiting groove 209b. At the same time, the front side of the locking groove 302a is in front of the sliding block 201, and the front side of the second inclined surface 204a fits against the moving plate 302 on the front side of the drive groove 302b.

[0047] The plug 400 is inserted into the plug connector 202 through the insertion hole 209a. The central conductive rod 402 abuts against the drive shaft 209 on the upper side of the limiting groove 209b. As the plug 400 moves upward, the central conductive rod 402 pushes the drive shaft 209 upward and rotates it under the action of the rotating drive column 214. The downward-facing end of the drive shaft 209 rotates along the outer edge of the anti-fall conductive part 404 through the limiting groove 209b. The drive shaft 209 drives the drive gear 210 to rotate, and the drive gear 210 drives the drive rack 20. 3. Movement: The two transmission racks 203 on the left and right sides of the socket move towards each other simultaneously. At the same time, the transmission shaft 209 drives the push-pull block 207 to move upward. When the push-pull block 207 moves upward, it drives the lower clamping block 208 to slide in the direction of the central conductive rod 402. That is, the two lower clamping blocks 208 on the left and right sides of the socket move towards each other simultaneously. The transmission racks 203 drive the sliding part 203a to move. The sliding part 203a pushes against the sliding block 201 and slides forward along the second slide groove 202b. Before the limiting block 204 leaves the second slide groove 202b, the first... The second return spring 205 is compressed by the limiting block 204. When the opposite sides of the two corresponding transmission racks 203 abut against the outer edge of the central conductive rod 402, and the opposite sides of the two corresponding lower clamping blocks 208 abut against the outer edge of the central conductive rod 402, the rear side of the limiting block 204 just leaves the second slide groove 202b, and the rear side of the limiting block 204 fits against the front side of the plug connector 202. At this time, the sliding part 203a cannot continue to move in the left and right directions under the action of the limiting block 204, and the transmission... The position of shaft 209 in the height direction is fixed. At this time, the anti-fall conductive part 404 and the insertion hole 209a on the lower side of the limiting groove 209b are staggered. That is, the anti-fall conductive part 404 is not aligned with the insertion hole 209a. The lower side of the anti-fall conductive part 404 abuts against the drive shaft 209 on the upper side of the insertion hole 209a. The two anti-fall conductive parts 404 on the plug 400 are hung on the drive shaft 209 in the plug connector 202, which further improves the reliability of the connection between the plug 400 and the plug 400 connection part 213a.

[0048] Example 3

[0049] Reference Figures 10-13 This is the second embodiment of the present invention, which is based on embodiment 2. This embodiment provides a plug 400 connector for a vacuum milk pump used in dairy farming. This embodiment can further facilitate the operation of the plug 400 disengaging from the plug connector 202.

[0050] Specifically, it also includes a reset assembly 300, which includes two movable plates 302 (made of insulating material) connected to the mounting housing 101 and movable in the front-rear direction, and two transmission screws 301 rotatably connected to the mounting housing 101. The front ends of the transmission screws 301 are outside the mounting housing 101, and several transmission handles 301a are arranged around the outer periphery of the transmission screws 301 outside the mounting housing 101. Two locking grooves 302a corresponding to the second slide groove 202b are opened at the rearward end of the movable plates 302. The locking grooves 302a are opened on the movable plates 302 at the end opposite to the center of the movable plates 302 in the left-right direction. The transmission groove 302b and the limiting block 204 have a second inclined surface 204a on the side facing forward relative to the direction of the insertion hole in the left-right direction. The moving plate 302 can be attached to the second inclined surface 204a through the transmission groove 302b. When the moving plate 302 moves in the direction of the plug connector 202, that is, moves backward, the moving plate 302 can push the limiting block 204 into the insertion groove through the second inclined surface 204a. The moving plate 302 is threadedly connected to the transmission screw 301. The front end of the plug connector 202 is fixed with two sets of guide rods 303 that correspond one-to-one with the moving plate 302. The moving plate 302 is slidably connected to the corresponding set of guide rods 303. The front end of the plug connector 202 is also connected to a positioning plate 206 for positioning the moving plate 302. The left and right sides of the rear end of the moving plate 302 are respectively fixed with positioning steps 302c. In the initial state, the front side of the positioning steps 302c is attached to the rear side of the positioning plate 206.

[0051] When the sliding block 201 moves forward to the point where the limiting block 204 leaves the second slide groove 202b, the limiting block 204 is pushed out by the second return spring 205 and moves away from the third sliding groove 201a. When the front side of the second inclined surface 204a is in contact with the moving plate 302 on the front side of the transmission groove 302b, the sliding block 201 cannot move forward any further. The upper end of the transmission shaft 209 is connected to a limiting plate 215 that restricts the transmission shaft 209 from moving downward under its own weight. In the initial state, the lower side of the limiting plate 215 abuts against the upper side of the support plate 211. When the breast pumping is finished and it is necessary to disconnect the power to the plug 400 at the end of the breast pump, simply rotate the transmission screw 301 to move the moving plate 302 backward, and the second inclined surface 204a... Under the action of the movable plate 302, which can only move in the front and back directions, the movable plate 302 pushes the limiting block 204 to move in the left and right directions. The limiting block 204 is gradually pushed into the third sliding groove 201a. When the limiting block 204 is fully pushed into the third sliding groove 201a, the transmission shaft 209 moves down and rotates in the opposite direction under the action of the first return spring 212. The transmission rack 203 and the lower clamping block 208 leave the plug 400. When the transmission shaft 209 returns to its original position, that is, when the lower side of the limiting plate 215 is attached to the upper side of the support plate 211, the anti-fall conductive part 404 is aligned with the plug hole 209a, and the plug 400 slides out of the plug connector 202, realizing the separation of the plug 400 and the plug connector 202, which is convenient to operate.

[0052] As long as the transmission screw 301 is not rotated (the transmission screw 301 is insulated), the plug 400 will not disengage from the plug connector 202, and the plug 400 and the plug connector 202 will always be tightly connected. When breastfeeding is not needed, the power supply needs to be disconnected. Rotate the transmission handle 301a, and the transmission screw 301 will rotate, causing the moving plate 302 to move backward. When the moving plate 302 is in contact with the second inclined surface 204a via the transmission groove 302b, continue rotating the transmission screw 301, and the moving plate 302 will continue to move downward. The moving plate 302 will push the limiting block 204 into the insertion groove via the second inclined surface 204a, and the transmission shaft 209... Under the action of the first return spring 212, the drive shaft 209 moves in the opposite direction, and the lower clamping block 208 and the drive rack 203 move away from the central conductive part. The drive shaft 209 pushes the plug 400 down, the first return spring 212 resets, the anti-fall conductive part 404 falls through the plug hole 209a, and the plug 400 is disengaged from the plug connector 202 for easy operation. Then, the drive screw 301 is rotated in the opposite direction. When the positioning step 302c moves forward and touches the front side of the positioning plate 206 and cannot move forward, the drive screw 301 is stopped, and the moving plate 302 is reset to facilitate the next plug-in use of the plug 400.

[0053] In this application, the directions are referenced to the front view, the front-back direction is the direction perpendicular to the paper, and the left-right direction is the horizontal direction perpendicular to the front-back direction.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A plug connector for a vacuum milk pump used in dairy farming, characterized in that: It includes, The main component includes a fixing base, with two recessed slots spaced apart in the left and right directions at the front end of the fixing base, and a mounting housing connected to the front side of the fixing base, with two mounting slots spaced apart in the left and right directions at the rear end of the mounting housing. The plug connection assembly includes a plug connector base connected to the mounting housing via a mounting recess. The rear end of the plug connector base has two front insertion recesses that correspond one-to-one with the rear insertion recess. The front and rear insertion recesses form a socket for inserting a plug. Connecting recesses are formed on the left and right sides of the front insertion recesses on the plug connector base. A support plate is fixedly connected to the plug connector base at the connecting recess. A drive shaft capable of vertical movement is rotatably connected to the support plate. A sliding groove is formed on the plug connector base between the front insertion recess and the connecting recesses. A vertically movable push-pull block is connected to the lower part of the drive shaft, and the drive shaft is rotatably connected to the push-pull block. The push-pull block has a sliding lower clamping block at its end away from the corresponding drive shaft in the left-right direction. The lower clamping block can be slidably connected to the plug connector via a sliding groove. When the plug is pushed upward into the socket, the two lower clamping blocks move in the direction of the plug. The end of the lower clamping block away from the push-pull block in the left-right direction can fit against the outer edge of the plug. A first return spring is mounted on the drive shaft. A drive gear is connected to the drive shaft on the lower side of the support plate. The drive gear is rotatably connected to the support plate. The drive shaft can slide along the drive gear and drive the drive gear to rotate. The first return spring is connected to the drive gear and the drive gear. Between the limiting steps at the lower part of the drive shaft, a transmission rack that can slide left and right and meshes with the transmission gear is connected to the plug connector above the push-pull block. The side of the transmission rack opposite the insertion hole in the left and right direction can fit tightly against the outer edge of the plug. A spiral groove is opened on the outer circumference of the drive shaft. A rotating transmission column that just inserts into the spiral groove is fixedly connected to the support plate. A second sliding groove is opened on the plug connector at the front end of the transmission rack in the left and right direction. A sliding part that can just slide left and right along the second sliding groove is fixed at the front end of the transmission rack. A second sliding groove is opened on the plug connector at the front end of the second sliding groove. The front end of the sliding part is slidably connected to a sliding block that can slide back and forth along the second sliding groove. The sliding block has a third sliding groove at one end in the left-right direction relative to the corresponding insertion hole. The sliding block is slidably connected to a limiting block that restricts the movement of the rack through the third sliding groove. A second return spring is connected between the side of the limiting block away from the front insertion groove in the left-right direction and the plug connector. When the limiting block is in the second sliding groove, the second return spring is in a compressed state. When the rear side of the limiting block leaves the second sliding groove, the limiting block is pushed out of the second sliding groove under the action of the second return spring, and the rear side of the limiting block is attached to the front side of the plug connector.

2. The plug connector for a vacuum milk pump used in dairy farming as described in claim 1, characterized in that: The push-pull block has a first inclined surface at the end away from the corresponding drive shaft in the left-right direction. A first slide rail is fixed on the push-pull block at the first inclined surface. A first slide groove corresponding to the first slide rail is opened on the lower clamping block. The lower clamping block is slidably connected to the first slide rail via the first slide groove. A first sliding groove is vertically set on the plug connector at the end away from the socket in the left-right direction. The push-pull block can slide up and down along the first sliding groove.

3. The plug connector for a vacuum milk pump used in dairy farming as described in claim 1, characterized in that: It also includes a reset assembly, which includes two movable plates connected to the mounting housing and capable of moving in the front-back direction. The rearward end of the movable plate has two snap-fit ​​grooves that correspond one-to-one with the second slide groove. The snap-fit ​​groove has a transmission groove on the movable plate at one end relative to the center of the movable plate in the left-right direction. The limiting block has a second inclined surface on the side facing forward relative to the direction of the insertion hole in the left-right direction. The movable plate can be attached to the second inclined surface through the transmission groove. When the movable plate moves in the direction of the plug connector, that is, moves backward, the movable plate can push the limiting block into the insertion groove through the second inclined surface.

4. The plug connector for a vacuum milk pump used in dairy farming as described in claim 3, characterized in that: The reset assembly also includes two transmission screws rotatably connected to the mounting housing, a movable plate threadedly connected to the transmission screws, and two sets of guide rods corresponding one-to-one with the movable plate fixed at the front end of the plug connector, with the movable plate slidably connected to the corresponding set of guide rods.

5. The plug connector for a vacuum milk pump used in dairy farming as described in claim 4, characterized in that: The front end of the transmission screw is outside the mounting housing, and several transmission handles (301a) are arranged around the outer periphery of the transmission screw outside the mounting housing.

6. The plug connector for a vacuum milk pump used in dairy farming as described in any one of claims 1 to 3, characterized in that: The drive shaft has a non-circular insertion hole at its downward-facing end. A circular limiting groove is formed on the drive shaft above the insertion hole. The plug includes a conductive transmission part that can abut against the lower side of the mounting housing. A central conductive rod is fixed at the center of the upper end of the conductive transmission part. The central conductive rod can be inserted into the corresponding insertion hole. An intermediate conductive part is fixed at the upper end of the left and right sides of the central conductive rod. An anti-fall conductive part is fixed at the upper end of the intermediate conductive part that can just pass through the insertion hole and extend into the limiting groove. When the upper side of the anti-fall conductive part abuts against the drive shaft above the limiting groove, the lower side of the anti-fall conductive part is flush with the lower side of the limiting groove. The lower side of the anti-fall conductive part can fit against the drive shaft above the insertion hole. When the limiting block is pushed out by the second return spring and the rear side of the limiting block fits against the front side of the plug connector, the anti-fall conductive part and the insertion hole are staggered, and the lower side of the anti-fall conductive part fits against the drive shaft below the limiting groove.

7. The plug connector for a vacuum milk pump used in dairy farming as described in any one of claims 3 to 5, characterized in that: When the rear side of the limit block is attached to the front side of the plug connector, the front side of the locking groove is in front of the sliding block, and the front side of the second inclined surface is attached to the moving plate on the front side of the transmission groove.

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