Female joint assembly, bayonet nut connector and probe

Abstract

The embodiment of the utility model relates to a female head assembly, a bayonet nut connector and a probe. A female head terminal is provided with a first guide groove arranged along the axial direction of the female head terminal; the male head terminal is provided with a clamping block. And the female head terminal and the male head terminal are connected under the cooperation of the sleeve. Under the rotation action of the sleeve, the guide surface pushes the clamping block to slide towards the end part of the first guide groove, and when the clamping block slides to be propped against the end part of the first guide groove, the locking part is propped against the clamping block to prevent the male head terminal from moving along the axial direction of the female head terminal, and when the clamping block slides to be propped against the end part of the first guide groove, the locking part is propped against the clamping block to prevent the male head terminal from moving along the axial direction of the female head terminal. And the cooperation of the first guide groove and the clamping block also plays a role in guiding the male head terminal in the process. Thus, the female head terminal and the male head terminal are tightly matched after being connected, the anti-shaking performance can be improved, and the problem that signals are unstable due to shaking of the connector is solved.

Description

Technical Field

[0001] The present application relates to the technical field of connectors, and in particular to a female head assembly, a bayonet nut connector and a probe. Background Art

[0002] BNC (Bayonet Nut Connector) is a connector for coaxial cables. The standard BNC includes a male terminal and a female terminal. The male terminal has a card block, and the female terminal has a card slot and a sleeve. After the male terminal and the female terminal are connected, the card block is inserted into the card slot, and the sleeve uses the spring to hold the card block tightly to prevent it from detaching from the card slot. During the use of this standard BNC, since its card block is fixed by the elastic force of the spring, it is impossible to avoid the problem of axial shaking of the card block in the card slot due to the deformation of the spring after shaking. As a result, the male terminal and the female terminal of the BNC have excessive relative shaking during use, and cannot meet the stability requirements in certain specific usage scenarios. In addition, the assembly process of the standard BNC spring is relatively complicated, and the rotating shell and the built-in spring need to be edged on the machine, which makes the assembly complicated and the adaptation flexibility is not high. Utility Model Content

[0003] In view of this, the embodiments of the present application provide a female connector assembly, a bayonet nut connector and a probe to solve one of the above-mentioned technical problems existing in the existing BNC.

[0004] In a first aspect, an embodiment of the present application provides a female connector assembly, including:

[0005] The female terminal has a first guide groove arranged along its axial direction; the first guide groove is used to connect the clamping block on the male terminal; the clamping block can slide in the first guide groove to guide the plug connection between the female terminal and the male terminal;

[0006] A sleeve, which can be sleeved on the outside of the female terminal and the male terminal; the sleeve has a guide surface and a locking portion, the guide surface extends along the circumferential direction and axial direction of the sleeve, and the locking portion is distributed in parallel with one end of the guide surface along the circumferential direction of the sleeve;

[0007] When the sleeve rotates along the first direction, it can drive the guide surface to push the block to slide toward the end of the first guide groove, and when the block slides to abut against the end of the first guide groove, the locking portion abuts against the block to at least hinder the axial movement of the male terminal along the female terminal.

[0008] In an optional embodiment, the end of the first guide groove and the locking portion respectively abut against two opposite sides of the block along the axial direction of the female terminal to prevent the male terminal from moving along the axial direction of the female terminal;

[0009] Furthermore, both sides of the blocking block along the circumferential direction of the female terminal abut against the side walls of the first guide groove to prevent the male terminal from moving along the circumferential direction of the female terminal.

[0010] In an optional embodiment, the sleeve can drive the locking portion to separate from the blocking block during rotation along the second direction to allow the male terminal to move axially along the female terminal; wherein the second direction is opposite to the first direction.

[0011] In an optional embodiment, when the locking portion abuts against the blocking block, the locking portion also abuts against the side wall of the first guide groove to prevent the sleeve from continuing to rotate.

[0012] In an optional embodiment, the female terminal further has a second guide groove arranged along its circumference, the second guide groove is located on one side of the first guide groove and is connected to the first guide groove;

[0013] When the sleeve rotates in the first direction, the locking portion moves from the end of the second guide groove away from the first guide groove to the first guide groove, so that the locking portion abuts against the blocking block.

[0014] In an optional embodiment, the female terminal includes a first connecting sleeve, and the first guide groove is formed in the first connecting sleeve;

[0015] The male terminal comprises a second connecting sleeve, and the clamping block is formed on the second connecting sleeve;

[0016] The first connecting sleeve can be sleeved on the outside of the second connecting sleeve.

[0017] In an optional embodiment, the first connecting sleeve and / or the second connecting sleeve is a shielding sleeve.

[0018] In an optional embodiment, the guide surface is formed by the end surface of a step protruding from the inner wall of the sleeve, and the step surrounds the axis of the sleeve.

[0019] In an optional embodiment, the inner wall of the step fits with the outer wall of the first connecting sleeve.

[0020] In an optional embodiment, the locking portion is a blocking protrusion protruding from the inner wall of the sleeve, and the blocking protrusion can be embedded in the first guide groove to abut against the blocking block.

[0021] In an optional embodiment, the inner wall of the sleeve further has an avoidance groove, and the avoidance groove and the locking portion are respectively located at opposite ends of the guide surface, and when the avoidance groove is aligned with the first guide groove along the radial direction of the sleeve, the blocking block can be simultaneously inserted into the first guide groove and the avoidance groove, so that the blocking block can pass through the avoidance groove and reach the effective range of the guide surface.

[0022] In an optional embodiment, the number of the first guide grooves is two or more, and they are arranged rotationally symmetrically around the center of the female terminal;

[0023] The number of the clamping blocks and the locking portions corresponds to the number of the first guide grooves; the clamping blocks are arranged rotationally symmetrically around the center of the male terminal, and the locking portions are arranged rotationally symmetrically around the center of the sleeve.

[0024] In an optional embodiment, the sleeve includes a sleeve body and a handle fixed on the sleeve body.

[0025] In an optional embodiment, a protrusion protrudes from the outer wall of the sleeve, and the protrusion is used to abut against the inner wall of the probe to limit the sleeve from rotating in a second direction, and the second direction is opposite to the first direction.

[0026] In a second aspect, an embodiment of the present application provides a bayonet nut connector, comprising the female head assembly described in the first aspect, and also comprising a male terminal.

[0027] In a third aspect, an embodiment of the present application provides a probe, comprising the female head assembly described in the first aspect.

[0028] The female head assembly, bayonet nut connector and probe provided in the embodiments of the present application are connected between the female terminal and the male terminal in cooperation with the sleeve. Under the rotation of the sleeve, the guide surface pushes the card block to slide toward the end of the first guide groove. When the card block slides to abut against the end of the first guide groove, the locking portion abuts against the card block, hindering the male terminal from moving axially along the female terminal, wherein the cooperation between the first guide groove and the card block also plays a guiding role for the male terminal in the process. In this way, the female terminal and the male terminal are tightly matched after being connected, which can improve the anti-shaking performance and reduce the problem of signal instability caused by connector shaking.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 A schematic cross-sectional structure diagram of a bayonet nut connector provided in an embodiment of the present application;

[0032] Figure 2 A schematic diagram of the three-dimensional structure of the bayonet nut connector provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the female terminal structure provided in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of the male terminal structure provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of the inner wall structure of the sleeve provided in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of the positions of the clamping block, the locking block and the first guide groove when the female terminal and the male terminal provided in the embodiment of the present application are plugged in.

[0037] The reference numerals in the figure are:

[0038] 1. Female terminal;

[0039] 11. first connecting sleeve; 12. connecting groove; 111. first guide groove; 112. second guide groove;

[0040] 2. Male terminal;

[0041] 21. second connecting sleeve; 211. clamping block;

[0042] 3. Sleeve;

[0043] 30. Step; 31. Avoidance groove; 32. Guide surface; 33. Locking portion; 35. Handle; 36. Limiting boss; 37. Protrusion. DETAILED DESCRIPTION

[0044] In order to make the technical solutions and beneficial effects of the utility model more obvious and easy to understand, the following is a detailed description by listing specific embodiments. The drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0045] In the description of the present invention, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation on the present invention.

[0046] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise clearly and specifically defined.

[0047] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0049] In order to thoroughly understand the present application, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present application. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other implementation methods.

[0050] The present application embodiment provides a bayonet nut connector, such as Figure 1-Figure 5 As shown, it includes: a female terminal 1, a male terminal 2 and a sleeve 3. Among them, the female terminal 1 and the sleeve 3 belong to a female component, which is used in the probe. The female component can be fixed in the housing of the probe. The male terminal 2 is usually set in a device (such as an oscilloscope, a spectrum analyzer, a signal source, etc.), and can be plugged and connected with the female terminal 1 for signal transmission. In order to ensure the stability of signal transmission, the connection between the two is required to be stable and no excessive relative movement should be generated. In the bayonet nut connector of the embodiment of the present application, the female terminal 1 has a first guide groove 111 arranged along its axial direction, and the male terminal 2 has a clamping block 211, which can slide in the first guide groove 111 to guide the plug-in connection between the female terminal 1 and the male terminal 2; the sleeve 3 can be sleeved on the outside of the female terminal 1 and the male terminal 2; the sleeve 3 has a guide surface 32 and a locking portion 33, and the guide surface 32 extends along the circumferential and axial directions of the sleeve 3, and the locking portion 33 is distributed parallel to one end of the guide surface 32 along the circumferential direction of the sleeve 3.

[0051] When the sleeve 3 rotates along the first direction, it can drive the guide surface 32 to push the block 211 to slide toward the end of the first guide groove 111, and when the block 211 slides to abut against the end of the first guide groove 111, the locking portion 33 abuts against the block 211 to at least prevent the male terminal 2 from moving axially along the female terminal 1.

[0052] In the present embodiment, the clamping block 211 is respectively abutted against the end of the first guide groove 111 and the locking portion 33, which can at least prevent the male terminal 2 from moving axially along the female terminal 1. This locking method is achieved by hard contact between the clamping block 211, the end of the first guide groove 111 and the locking portion 33. Compared with the elastic locking method of the current standard BNC relying on the spring sheet, this locking method of the present embodiment is more reliable and less prone to shaking.

[0053] The sleeve 3 is a component for the operator to apply external force. Before rotating the sleeve 3, the block 211 of the male terminal 2 is inserted into the first guide groove 111. At this time, the male terminal 2 and the female terminal 1 are preliminarily plugged in, but not plugged in place. Subsequently, the sleeve 3 is rotated in the first direction. Under the action of the guide surface 32 pushing the block 211 to slide toward the end of the first guide groove 111, the male terminal 2 gradually plugs in deeply with the female terminal 1 (it can be understood that the overlapping part of the two nests is gradually extended in the axial direction). When the block 211 slides to abut against the end of the first guide groove 111, the locking portion 33 also abuts against the block 211 synchronously. At this time, the male terminal 2 and the female terminal 1 are plugged in place, and the two are locked by the sleeve 3. In other words, by rotating the sleeve 3, the male terminal 2 and the female terminal 1 are not only plugged in place, but also locked. There is no need to first plug the male terminal 2 and the female terminal 1 into place and then lock them, which makes the operation easier.

[0054] In this embodiment, one of the first direction and the second direction is a clockwise direction, and the other is a counterclockwise direction.

[0055] Generally, the female terminal 1, the male terminal 2 and the sleeve 3 are all roughly coaxially distributed, and the axial direction mentioned in this embodiment may refer to the axial direction of the female terminal 1, or the axial direction of the male terminal 2 or the sleeve 3. The circumferential direction mentioned in this embodiment is similar.

[0056] The cooperation between the first guide groove 111 and the block 211 is to ensure that during the plugging process between the female terminal 1 and the male terminal 2, the male terminal 2 only moves axially and does not rotate circumferentially. It can be understood that the width of the first guide groove 111 should correspond to the width of the block 211, so that the block 211 located in the first guide groove 111 can ensure that it only moves axially along the female terminal 1. Among them, the function of the guide surface 32 is to push the block 211 to slide along the first guide groove 111. Since the guide surface 32 extends along the circumference and axial direction of the sleeve 3, when the sleeve 3 rotates, the axial position of the guide surface 32 also changes when the circumference changes, and the block 211 in contact with it is driven to move axially until the block 211 abuts against the end of the first guide groove 111. The locking portion 33 is parallel to one end of the guide surface 32 along the circumferential direction of the sleeve 3, that is, when the block 211 moves along the guide surface 32 to abut the end of the first guide groove 111, the locking portion 33 is close to one side of the block 211. As the sleeve 3 continues to rotate, the locking portion 33 abuts one side of the block 211, and the block 211 is between the end of the first guide groove 111 and the locking portion 33. The end of the first guide groove 111 and the locking portion 33 are both axially immovable components, so the axial movement of the block 211 is restricted. Accordingly, the axial movement of the male terminal 2 along the female terminal 1 is restricted.

[0057] In the bayonet nut connector provided in the embodiment of the present application, the female terminal 1 and the male terminal 2 are connected with the cooperation of the sleeve 3. Under the rotation of the sleeve 3, the guide surface 32 pushes the block 211 to slide toward the end of the first guide groove 111. When the block 211 slides to abut against the end of the first guide groove 111, the locking portion 33 abuts against the block 211, thereby preventing the male terminal 2 from moving axially along the female terminal 1, wherein the cooperation between the first guide groove 111 and the block 211 also guides the male terminal 2 in the process. In this way, the female terminal 1 and the male terminal 2 are tightly matched after being connected, which can improve the anti-shaking performance and reduce the problem of signal instability caused by connector shaking. On the other hand, the scheme of this embodiment also abandons the spring component in the existing standard BNC, and there will be no problem of axial shaking of the terminal caused by the deformation of the spring.

[0058] In an optional embodiment, in combination with Figures 1 to 6 As shown, the end of the first guide groove 111 and the locking portion 33 respectively abut against the opposite sides of the block 211 along the axial direction of the female terminal 1 to hinder the axial movement of the male terminal 2 along the female terminal 1; and, both sides of the block 211 along the circumferential direction of the female terminal 1 abut against the side walls of the first guide groove 111 to hinder the circumferential movement of the male terminal 2 along the female terminal 1.

[0059] In an optional embodiment, the end profile of the first guide groove 111 can be designed to match the side wall profile of the block 211. For example, when the block 211 is cylindrical, the end of the first guide groove 111 can be designed to be semicircular, so that when one side of the block 211 is against the end of the first guide groove 111, the end of the first guide groove 111 has a wide wrapping range for one side of the block 211, which can limit the movement of the block 211 in multiple directions.

[0060] In an optional embodiment, the sleeve 3 can drive the locking portion 33 to separate from the block 211 during the rotation in the second direction, so as to allow the male terminal 2 to move along the axial direction of the female terminal 1; wherein the second direction is opposite to the first direction. In this embodiment, the restriction on the axial movement of the male terminal 2 along the female terminal 1 can be unlocked by the reverse rotation of the sleeve 3, so as to separate the male terminal 2 from the female terminal 1 when necessary.

[0061] In an optional embodiment, if Figure 6 As shown, when the locking portion 33 abuts against the block 211, the locking portion 33 also abuts against the side wall of the first guide groove 111 to prevent the sleeve 3 from continuing to rotate. In this embodiment, the side wall of the first guide groove 111 is reused as a limiting structure of the locking portion 33, so that when the user operates the sleeve 3 to rotate, he can clearly know whether the rotation is in place, which is convenient for operation. That is, when the rotation is obviously hindered, it is known that the sleeve 3 is rotated in place, and at this time the locking portion 33 can just abut the block 211.

[0062] In an optional embodiment, if Figure 3 As shown, the female terminal 1 also has a second guide groove 112 arranged along its circumference, and the second guide groove 112 is located on one side of the first guide groove 111 and communicates with the first guide groove 111;

[0063] When the sleeve 3 rotates in the first direction, the locking portion 33 moves from the end of the second guide groove 112 away from the first guide groove 111 to the first guide groove 111 , so that the locking portion 33 abuts against the block 211 .

[0064] In this embodiment, the second guide groove 112 is used to accommodate and move the locking portion 33. When the sleeve 3 rotates, the locking portion 33 located in the second guide groove 112 rotates in the first direction or the second direction. The second guide groove 112 is connected to the first guide groove 111, so when the locking portion 33 rotates in the first direction, it rotates from one end of the second guide groove 112 away from the first guide groove 111 to the other end, and can enter the first guide groove 111 when reaching the other end, and is blocked on one side of the block 211. On the contrary, when the locking portion 33 rotates in the second direction, it disengages from the first guide groove 111, returns to the second guide groove 112, and continues to rotate in the second direction until it abuts against the end of the second guide groove 112 away from the first guide groove 111. At this time, it cannot continue to rotate. When the user operates, it can be known that the sleeve 3 is in place, and the locking portion 33 is already located at the end of the second guide groove 112 away from the first guide groove 111.

[0065] In an optional embodiment, if Figure 3 As shown, the female terminal 1 includes a first connecting sleeve 11, and a first guide groove 111 is formed in the first connecting sleeve 11;

[0066] like Figure 4 As shown, the male terminal 2 includes a second connecting sleeve 21, and a clamping block 211 is formed on the second connecting sleeve 21;

[0067] The first connecting sleeve 11 can be sleeved on the outside of the second connecting sleeve 21 .

[0068] In this embodiment, the female terminal 1 and the male terminal 2 are connected in a sleeve-type manner, which can greatly reduce the space for the connector to shake, and is beneficial to reducing the radial shaking of the connector.

[0069] In an optional embodiment, in this embodiment, the first connecting sleeve 11 and / or the second connecting sleeve 21 are shielding sleeves. In this embodiment, the first connecting sleeve 11 and / or the second connecting sleeve 21 are not only used as the parts that are mutually connected between the female terminal 1 and the male terminal 2, but also reused as the shielding sleeve for shielding the connector signal, which can improve the anti-interference performance of the connector and improve the signal stability. It should be noted that in the connector of the prior art, the parts used for clamping between the male terminal and the female terminal are large in size and have a large range of movement. The area swept during the rotation process is large, and the corresponding hollow area that needs to be designed for the shielding shell is also large. Therefore, the signal shielding ability is not good. The bayonet nut connector of this embodiment, the first guide groove 111 and the second guide groove 112 on the first connecting sleeve 11 have a simple structure and a low area share. They only need to meet the activity space of the card block 211, and can better meet the requirements of shielding performance.

[0070] In an optional embodiment, if Figure 5 As shown, the guide surface 32 is formed by the end surface of the step 30 protruding from the inner wall of the sleeve 3, and the step 30 surrounds the axis of the sleeve 3. In this embodiment, a solution is provided for forming the guide surface 32 by the step 30, and the molding of the step 30 is easily realized by mold design or turning, and has high feasibility.

[0071] In an optional embodiment, the inner wall of the step 30 fits the outer wall of the first connecting sleeve 11. In this embodiment, the inner wall height of the step 30 is designed to fit the outer wall of the first connecting sleeve 11, which can improve the stability of the sleeve 3 and the female terminal 1 when they are sleeved, which is conducive to reducing the shaking of the connector.

[0072] In an optional embodiment, if Figure 5 As shown, the locking portion 33 is a blocking protrusion protruding from the inner wall of the sleeve 3, and the blocking protrusion can be embedded in the first guide groove 111 to abut against the block 211. In this embodiment, the locking portion 33 is designed as a part protruding from the inner wall of the sleeve 3, and its molding is easy to achieve through mold design or turning, and has high feasibility.

[0073] In an optional embodiment, if Figure 5As shown, the inner wall of the sleeve 3 also has an avoidance groove 31. The avoidance groove 31 and the locking portion 33 are respectively located at opposite ends of the guide surface 32. When the avoidance groove 31 is aligned with the first guide groove 111 along the radial direction of the sleeve 3, the block 211 can be simultaneously inserted into the first guide groove 111 and the avoidance groove 31, so that the block 211 can pass through the avoidance groove 31 and reach the range of action of the guide surface 32. In this embodiment, the avoidance groove 31 is designed to provide space for the block 211 to move. When the avoidance groove 31 is present, the height of the block 211 can be designed to be relatively high, so that the area of ​​force applied to the block 211 when in contact with the guide surface 32 is larger, which is conducive to the stability of the guide. Before the male terminal 2 and the female terminal 1 are initially plugged in, the block 211 is outside the range of action of the guide surface 32. Even if the sleeve 3 rotates, it cannot drive the block 211 to move along the first guide groove 111. Figure 5 As shown, after the block 211 passes through the avoidance groove 31 , the block 211 reaches the action range of the guide surface 32 , so the block 211 can enter the side of the guide surface 32 from the avoidance groove 31 as the sleeve 3 rotates.

[0074] In an optional embodiment, if Figure 3-Figure 5 As shown, the number of the first guide grooves 111 is two or more, and they are arranged rotationally symmetrically around the center of the first connecting sleeve 11;

[0075] The number of the clamping blocks 211 and the locking portions 33 corresponds to the number of the first guide grooves 111 ; the clamping blocks 211 are arranged rotationally symmetrically around the center of the second connecting sleeve 21 , and the locking portions 33 are arranged rotationally symmetrically around the center of the sleeve 3 .

[0076] In this embodiment, by providing two or more first connection sleeves 11, clamping blocks 211 and locking portions 33, the balance of the force applied to the male terminal 2 when the sleeve 3 rotates can be improved, and the male terminal 2 can be prevented from tilting due to the unilateral force in the circumferential direction. It can be understood that the number of the first connection sleeve 11, the clamping block 211 and the locking portion 33 is preferably set to 2 or 3, that is, the balance of the force applied to the male terminal 2 is satisfied without causing excessive space occupation.

[0077] In an optional embodiment, if Figure 2 As shown, the sleeve 3 includes a sleeve body and a handle 35 fixed on the sleeve body. In this embodiment, the setting of the handle 35 can be used as a labor-saving lever when the user operates, so as to operate the sleeve 3 to rotate by hand.

[0078] In an optional embodiment, if Figure 2As shown, the outer wall of the sleeve 3 is protruded with a protrusion 37, and the protrusion 37 is used to abut against the inner wall of the probe to limit the axial movement of the sleeve 3. In this embodiment, the function of the protrusion 37 is that when the bayonet nut connector of this embodiment is assembled with the probe, the protrusion 37 is used to abut against the inner wall of the probe to limit the axial movement of the sleeve 3, so as to avoid that the relative position of the sleeve 3 and the probe is changed after the sleeve 3 and the probe are connected, thereby affecting the connection between the two.

[0079] In an optional embodiment, if Figure 4 In this embodiment, the cylindrical design of the block 211 makes the surrounding arc surface smooth and non-convex, so when it abuts against the locking portion 33, the guide surface 32 or the side wall of the first guide groove 111, the force is relatively uniform, which is conducive to reducing wear.

[0080] In an optional embodiment, if Figure 5 As shown, the guide surface 32 is arc-shaped, and the tangent directions at both ends of the guide surface 32 are perpendicular to the axial direction of the sleeve 3. In this embodiment, when the tangent directions at both ends of the guide surface 32 are perpendicular to the axial direction of the sleeve 3, the block 211 moves from the avoidance groove 31 to the guide surface 32, and the block 211 and the guide surface 32 move toward the locking portion 33. The switching is smoother, reducing the sense of frustration.

[0081] In an optional embodiment, if Figure 3 As shown, one end of the female terminal 1 has a connection groove 12 for connecting the probe. The connection groove 12 is used to fix with the probe housing to prevent the connector from moving forward, backward, left, and right after being assembled to the probe.

[0082] In an optional embodiment, if Figure 5 As shown, a limiting boss 36 is formed at one end of the inner wall of the sleeve for abutting against the outer wall of the female terminal 1 so that the female terminal 1 can abut against it when it is installed, so that the user can easily know that the female terminal 1 is assembled in place when it contacts the limiting boss 36.

[0083] In an optional embodiment, the tolerance of the first connecting sleeve 11 is designed to be in the range of 0 to +0.05 mm to improve the stability of the connection between the first connecting sleeve 11, the second connecting sleeve 21 and the sleeve 3 when they are sleeved together.

[0084] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present application that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present application and do not limit the scope of protection of the patent of this application.

Claims

1. A female head assembly of a bayonet nut connector, characterized in that: include: Female terminal (1) and sleeve (3); The female terminal (1) has a first guide groove (111) arranged along its axial direction; the first guide groove (111) is used to connect to a clamping block (211) on the male terminal (2); the clamping block (211) can slide in the first guide groove (111) to guide the plug-in connection between the female terminal (1) and the male terminal (2); The sleeve (3) can be sleeved on the outside of the female terminal (1) and the male terminal (2); the sleeve (3) has a guide surface (32) and a locking portion (33); the guide surface (32) extends along the circumferential direction and axial direction of the sleeve (3); the locking portion (33) is distributed in parallel with one end of the guide surface (32) along the circumferential direction of the sleeve (3); When the sleeve (3) rotates in the first direction, it can drive the guide surface (32) to push the block (211) to slide toward the end of the first guide groove (111), and when the block (211) slides to abut against the end of the first guide groove (111), the locking portion (33) abuts against the block (211) to at least hinder the axial movement of the male terminal (2) along the female terminal (1).

2. The female head assembly according to claim 1, characterized in that: The end of the first guide groove (111) and the locking portion (33) respectively abut against two opposite sides of the clamping block (211) along the axial direction of the female terminal (1) to prevent the male terminal (2) from moving along the axial direction of the female terminal (1); Furthermore, both sides of the clamping block (211) along the circumference of the female terminal (1) abut against the side walls of the first guide groove (111) to prevent the male terminal (2) from moving along the circumference of the female terminal (1).

3. The female head assembly according to claim 1, characterized in that: When the sleeve (3) rotates in the second direction, it can drive the locking portion (33) to separate from the blocking block (211) to allow the male terminal (2) to move axially along the female terminal (1); wherein the second direction is opposite to the first direction.

4. The female head assembly according to claim 1, characterized in that: When the locking portion (33) abuts against the clamping block (211), the locking portion (33) also abuts against the side wall of the first guide groove (111) to prevent the sleeve (3) from continuing to rotate.

5. The female head assembly according to any one of claims 1 to 4, characterized in that: The female terminal (1) further comprises a second guide groove (112) arranged along its circumference, wherein the second guide groove (112) is located on one side of the first guide groove (111) and is in communication with the first guide groove (111); When the sleeve (3) rotates in the first direction, the locking portion (33) moves from the end of the second guide groove (112) away from the first guide groove (111) toward the first guide groove (111), so that the locking portion (33) abuts against the blocking block (211).

6. The female head assembly according to any one of claims 1 to 4, characterized in that: The female terminal (1) comprises a first connecting sleeve (11), and the first guide groove (111) is formed in the first connecting sleeve (11); The male terminal (2) comprises a second connecting sleeve (21), and the clamping block (211) is formed on the second connecting sleeve (21); The first connecting sleeve (11) can be sleeved on the outside of the second connecting sleeve (21).

7. The female head assembly according to claim 6, characterized in that: The first connecting sleeve (11) and / or the second connecting sleeve (21) is a shielding sleeve.

8. The female head assembly according to claim 6, characterized in that: The guide surface (32) is formed by the end surface of a step (30) protruding from the inner wall of the sleeve (3), and the step (30) surrounds the axis of the sleeve (3).

9. The female head assembly according to claim 8, characterized in that: The inner wall of the step (30) is in contact with the outer wall of the first connecting sleeve (11).

10. The female head assembly according to any one of claims 1 to 4, characterized in that: The locking portion (33) is a blocking protrusion protruding from the inner wall of the sleeve (3), and the blocking protrusion can be embedded in the first guide groove (111) to abut against the clamping block (211).

11. The female head assembly according to any one of claims 1 to 4, characterized in that: The inner wall of the sleeve (3) further comprises an escape groove (31), wherein the escape groove (31) and the locking portion (33) are respectively located at opposite ends of the guide surface (32), and when the escape groove (31) is aligned with the first guide groove (111) along the radial direction of the sleeve (3), the clamping block (211) can be simultaneously clamped into the first guide groove (111) and the escape groove (31), so that the clamping block (211) can pass through the escape groove (31) and reach the effective range of the guide surface (32).

12. The female head assembly according to any one of claims 1 to 4, characterized in that: The number of the first guide grooves (111) is two or more, and they are arranged in rotational symmetry around the center of the female terminal (1); The number of the clamping blocks (211) and the locking portions (33) corresponds to the number of the first guide grooves (111); the clamping blocks (211) are arranged rotationally symmetrically around the center of the male terminal (2), and the locking portions (33) are arranged rotationally symmetrically around the center of the sleeve (3).

13. The female head assembly according to any one of claims 1 to 4, characterized in that: The sleeve (3) comprises a sleeve body and a handle (35) fixed on the sleeve body.

14. The female head assembly according to any one of claims 1 to 4, characterized in that: A protrusion (37) protrudes from the outer wall of the sleeve (3), and the protrusion (37) is used to abut against the inner wall of the probe to limit the axial movement of the sleeve (3) along the sleeve (3).

15. A bayonet nut connector, characterized in that: It comprises the female connector assembly as claimed in any one of claims 1 to 14, and also comprises the male terminal (2).

16. A probe, characterized in that: include: A female head assembly as described in any one of claims 1-14.

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