Rotatable joint and endoscope

Abstract

The utility model relates to the technical field of endoscopes, in particular to a rotatable joint and an endoscope, the rotatable joint comprises a joint seat, the joint seat is provided with a connecting line and a contact, and the connecting line is used for being connected with the contact; the inner ferrule is installed on the connector base, a notch is formed in the wall face of the inner ferrule, and the connecting line penetrates into the inner ferrule and extends out of the notch; the outer sleeve ring is arranged outside the peripheral side of the inner sleeve ring in a sleeving mode, the outer sleeve ring is rotationally connected with the inner sleeve ring, an electric connecting base is arranged on the wall face of the outer sleeve ring, the electric connecting base is electrically connected with the connecting wire and used for being connected with an external device, the outer sleeve ring rotates automatically to adjust the extending direction of the connecting wire, and the connector base is fixed to the endoscope body. When the extension direction of the connecting line needs to be adjusted, the outer ferrule can rotate in the peripheral direction of the inner ferrule to adapt to the extension direction of the connecting line, and the problem that in the prior art, the extension direction of the connecting line is fixed after the connector base is fixed, and consequently the extension direction of the connecting line cannot be adjusted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a rotatable joint and an endoscope. Background Art

[0002] An electronic endoscope system usually includes an endoscope body, an image processor and a display. When in use, medical staff hold the endoscope body and insert it into the natural cavity of the human body to establish a channel and obtain internal image signals. The endoscope body is connected to different devices through its installed and fixed connector to establish communication.

[0003] However, in the existing endoscope connector, after the connector is fixed to the endoscope, the connecting line of the connector cannot adjust the extension direction according to the use requirements, resulting in the need to operate the endoscope according to the fixed extension direction of the connecting line during use, reducing the operational flexibility of the endoscope.

[0004] Therefore, it is of practical value to study a connector and an endoscope with adjustable extension direction of the connecting line. Utility Model Content

[0005] The utility model aims to provide a rotatable joint and an endoscope, so as to solve the problem that the extending direction of the connecting line of the existing endoscope joint cannot be adjusted.

[0006] In order to solve the above technical problems, in a first technical solution, the utility model provides a rotatable joint, comprising:

[0007] A connector base, wherein the connector base is provided with a connecting wire and a contact, and the connecting wire is used to connect to the contact;

[0008] An inner ferrule, the inner ferrule is mounted on the connector seat, a notch is provided on the wall surface of the inner ferrule, the connecting wire passes through the inner ferrule and extends out of the notch;

[0009] An outer ring, wherein the outer ring is sleeved on the outside of the circumference of the inner ring, the outer ring is rotatably connected to the inner ring, an electrical connection seat is provided on the wall surface of the outer ring, the electrical connection seat is sleeved outside the connecting wire, the electrical connection seat is used to connect to an external device, and the rotation of the outer ring is used to adjust the extension direction of the connecting wire.

[0010] Since the connecting wire can extend from the gap of the inner ring and be connected to the electrical connection socket of the outer ring, during use, after one end of the connecting wire is fixed to the endoscope body, the connecting wire can be adjusted to extend in a direction by rotating the outer ring outside the inner ring to meet usage requirements, which completely solves the problem in the prior art that the extending direction of the connecting wire is fixed and the extending direction of the connecting wire of the connector is not adjustable.

[0011] In some embodiments of the first technical solution, the notch is opened circumferentially on the wall surface of the inner ring with the axis of the inner ring as the center. During the rotation of the outer ring, due to the circumferential opening of the notch, the connecting line can move circumferentially in the notch to enable the connecting line to rotate flexibly.

[0012] In some embodiments of the first technical solution, a connection port is provided on the wall surface of the outer ring, and the electrical connection seat is installed in the connection port; the distance between the top end of the notch and the bottom end of the notch is greater than the diameter of the connection port, which facilitates the connection wire to extend out of the notch and connect to the electrical connection seat at the connection port.

[0013] In some embodiments of the first technical solution, the connection port is aligned with the notch. After the two are aligned with each other, on the one hand, it is convenient for the connection line to rotate, and on the other hand, it reduces the loss of the connection line.

[0014] In some embodiments of the first technical solution, a movable protrusion is provided on the outer wall surface of the inner ring; at least two groove protrusions are provided on the inner wall surface of the outer ring, and a plurality of the groove protrusions are circumferentially arranged with the axis of the outer ring as the center, and a rotation groove is formed between adjacent groove protrusions; the movable protrusion is slidably provided in the rotation groove, and after having the movable protrusion and the rotation groove, the circumferential rotation range of the outer ring on the inner ring can be limited.

[0015] In some embodiments of the first technical scheme, a connecting piece is further included; the connecting piece is sleeved on the outer side of the inner ring, and the connecting piece is threadedly connected to the inner ring; an outer edge is provided on the outer wall of the inner ring, and the outer edge is circumferentially arranged with the axis of the inner ring as the center; the outer ring is provided between the connecting piece and the outer edge, and a first elastic gasket and a sealing ring are compressed between the outer ring and the outer edge, and a second elastic gasket is compressed between the connecting piece and the outer ring. After having the first elastic gasket, the second elastic gasket and the sealing ring, the rotation force can be adjusted, sealing and lubricating can be played, and the existence of the connecting piece can realize the fixation of the outer ring.

[0016] In some embodiments of the first technical scheme, the connector seat includes a shell, a contact seat body and a snap-on component; both ends of the shell are open, and a snap-on groove, a trigger portion mounting through hole and a compression wall are provided on the shell wall of the shell; the contact seat body is installed in the shell, and a plug mounting channel is formed between the contact seat body and the shell wall of the shell; the snap-on component includes a snap ring, a trigger portion and an elastic portion; the snap ring is fixedly connected to the trigger portion, the snap ring is sleeved on the outer side of the contact seat body, the snap ring is arranged in the snap-on groove, and the snap ring slides with the snap ring groove The trigger part is provided in the trigger part mounting through hole, the trigger part is slidably connected to the trigger part mounting through hole, and the compression wall is provided between the trigger part and the snap ring; the elastic part is provided between the trigger part and the compression wall, and the elastic part is used to make the snap ring have a tendency to move toward the trigger part; the triggering of the trigger part is used to make the snap ring move out of or into the plug mounting channel, and through the cooperation of the snap ring, the trigger part and the elastic part, the plug installed in the plug mounting channel can be quickly clamped by the snap ring, thereby realizing the function of quick plug-in and fixation.

[0017] In some embodiments of the first technical solution, a guide portion is provided on the shell wall of the shell, and a matching portion is provided on the clamping ring. The clamping ring slides in a directional manner under the action of the guide portion and the matching portion, thereby ensuring the stability of quick plug-in fixation.

[0018] In some embodiments of the first technical solution, the contact base includes the contact, the connecting wire and the mounting body; the contact is connected to the connecting wire, and the contact is mounted on the mounting body; in the direction away from the connecting wire, a circle of surrounding walls for protecting the contact is provided on the surrounding side of the mounting body, and the contact is arranged in the surrounding wall, which can effectively prevent fingers from touching the contact and reduce the loss of the contact.

[0019] The second technical solution, the utility model provides a rotatable joint using the first technical solution, after which the rotatable joint is used, the user can achieve flexible operation when using the endoscope.

[0020] The more prominent beneficial effects of the utility model are as follows:

[0021] 1. In the present solution, a notch is provided on the inner ferrule and an electrical connection seat is provided on the outer ferrule. The connecting wire is inserted into the inner ferrule and extends out of the notch to be connected to the electrical connection seat. When the connecting wire needs to be adjusted in its extension direction, the outer ferrule can be rotated in the outer circumference of the inner ferrule to adapt to the extension direction of the connecting wire, thereby avoiding the problem in the prior art that the extension direction of the connecting wire is fixed after the connecting seat is fixed, resulting in the inability to adjust the extension direction of the connecting wire.

[0022] 2. In the present solution, a snap ring, a trigger portion and an elastic portion are provided in the connector seat. When the plug seat needs to be inserted into the plug installation channel of the connector seat, the trigger portion is pressed to move the snap ring out of the plug installation channel. After the plug seat is inserted into the plug installation channel, the trigger portion is released. The elastic portion can enable the snap ring to maintain a tendency to move toward the trigger portion, so that the snap ring clamps the plug seat, thereby achieving quick assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a cross-sectional schematic diagram of the overall structure provided by the preferred embodiment of the utility model;

[0025] Figure 2 It is a partial cross-sectional schematic diagram between the inner ferrule and the outer ferrule provided in the preferred embodiment of the utility model;

[0026] Figure 3 It is a partial cross-sectional schematic diagram between the clamp ring and the housing provided in a preferred embodiment of the utility model.

[0027] The reference numerals are as follows:

[0028] 1. Connector seat; 10. Housing; 100. Snap ring groove; 101. Compression wall; 102. Guide portion; 11. Contact seat body; 110. Contact; 111. Mounting body; 12. Buckle component; 120. Snap ring; 1200. Matching portion; 121. Trigger portion; 122. Elastic portion;

[0029] 2. Inner ferrule; 20. Notch; 21. Removable protrusion;

[0030] 3. Outer ring; 30. Electrical connection seat; 31. Connection port; 32. Groove body protrusion; 33. Rotation groove;

[0031] 4. First elastic gasket; 5. Second elastic gasket; 6. Sealing ring; 7. Connecting piece. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] In the prior art, the extension direction of the connecting wire cannot be adjusted according to usage requirements, resulting in a significant decrease in the operational flexibility of the endoscope.

[0034] Embodiment 1

[0035] In order to solve the above problems, the utility model provides a rotatable joint, please refer to Figures 1 to 3 , including a connector seat 1, an inner ferrule 2 and an outer ferrule 3; the connector seat 1 is provided with a connecting wire (not shown) and a contact 110, and the connecting wire is used to connect with the contact 110; the inner ferrule 2 is installed on the connector seat 1, and a notch 20 is provided on the wall of the inner ferrule 2, and the connecting wire passes through the inner ferrule 2 and extends out of the notch 20; the outer ferrule 3 is sleeved on the outer side of the inner ferrule 2, and the outer ferrule 3 is rotatably connected to the inner ferrule 2, and an electrical connecting seat 30 is provided on the wall of the outer ferrule 3, and the electrical connecting seat 30 is sleeved outside the connecting wire, and the electrical connecting seat 30 is used to connect with an external device, and the rotation of the outer ferrule 3 is used to adjust the extension direction of the connecting wire.

[0036] It should be pointed out that when the endoscope is wirelessly connected, or a battery is installed in the endoscope, the electrical connection seat can be a charging seat for charging the signal transmitter / battery installed on the connector or inside the insertion part, and the rotatable joint can adjust the charging direction; when the endoscope is wired, the electrical connection seat can be a signal connection seat (socket) or a protective cover extending from the connecting wire.

[0037] After adopting the above-mentioned setting method, when the rotatable joint is fixedly connected to the endoscope body, the connecting line can extend out of the notch 20 of the inner ferrule 2 and be connected to the electrical connection socket 30 of the outer ferrule 3. The electrical connection socket 30 can be used as a signal line connection socket, a power line connection socket and a charging socket. When the connecting line or the external device connected to the electrical connection socket 30 needs to be turned, the connecting line can be adjusted to the extension direction according to the use requirements through the rotation of the outer ferrule 3 outside the inner ferrule 2, thereby improving the operational flexibility of the endoscope and avoiding the need to operate according to the fixed extension direction of the connecting line as in the prior art, thereby affecting the operational flexibility.

[0038] like Figure 1 As shown, the inner ferrule 2 is fixedly mounted on the joint seat 1, the outer ferrule 3 is sleeved on the outside of the inner ferrule 2, the outer ferrule 3 is rotatably connected to the inner ferrule 2, and the top of the outer ferrule 3 is connected with a connecting piece 7. After adopting this setting method, the inner ferrule 2, the outer ferrule 3, the connecting piece 7 and the joint seat 1 are assembled.

[0039] As for the connector 7, the options of the connector 7 include but are not limited to components such as a connectable cover, a radio transmitting (receiving) module, a display or a bracket, and those skilled in the art can make a selection according to actual needs.

[0040] As for the connection method between the inner ferrule 2 and the outer ferrule 3, Figure 1As shown, the inner ferrule 2 and the outer ferrule 3 are connected by rotation so that the outer ferrule 3 can be installed outside the inner ferrule 2. After adopting this setting method, the connecting line can move on the notch 20 of the inner ferrule 2 as the outer ferrule 3 rotates. The rotation of the outer ferrule 3 can adjust the extension direction of the connecting line to meet the requirements of matching use, effectively improving the flexibility of operation.

[0041] Exemplarily, in some embodiments, the connecting piece 7 is sleeved on the outer side of the inner ring 2, and the connecting piece 7 is threadedly connected to the inner ring 2; an outer edge is provided on the outer wall of the inner ring 2, and the outer edge is circumferentially arranged with the axis of the inner ring 2 as the center; the outer ring 3 is provided between the connecting piece 7 and the outer edge. After adopting this arrangement, the connecting piece 7 and the inner ring 2 jointly limit the axial movement of the outer ring 3 to prevent the outer ring 3 from slipping off the outside of the inner ring 2.

[0042] For example, in some possible embodiments, an outer thread is provided on the outer wall of the end of the inner ring 2, and an inner thread is provided on the inner wall of the end of the outer ring 3. The inner ring 2 and the outer ring 3 can be rotatably connected by a threaded connection of internal and external threads.

[0043] Exemplarily, in some possible embodiments, at least one circle of rotating flange is provided on the outer wall surface of the end of the inner ring 2, and the end of the inner ring 2 can be elastically closed. At least one circle of rotating groove is provided on the inner wall surface of the end of the outer ring 3. The inner ring 2 can be elastically closed so that the rotating flange can be rotatably arranged in the rotating groove, thereby realizing the rotating connection between the inner ring 2 and the outer ring 3.

[0044] like Figure 1 As shown, in order to achieve the purpose of adjusting the rotation force, sealing and lubrication, the first elastic gasket 4 is compressed between the outer ring 3 and the outer edge, and the sealing ring 6 is arranged between the outer ring 3 and the first elastic gasket 4; the other end of the outer ring 3 is provided with a connecting piece 7, and the second elastic gasket 5 is compressed between the connecting piece 7 and the outer ring 3. After adopting this setting method, with the first elastic gasket 4, the second elastic gasket 5 and the sealing ring 6, the function of adjusting the rotation force, sealing and lubrication can be achieved.

[0045] Among them, the ring part and the raised outer edge part of the inner ring 2 can be a separate structure or an integrated structure, and technical personnel in this field can choose according to actual needs; the elastic material of the first elastic gasket 4 and the second elastic gasket 5 includes but is not limited to rubber.

[0046] As for the inner ferrule 2 and the connector seat 1 and the connecting wire of the connector seat 1, the inner ferrule 2 and the connector seat 1 are connected and fixed by screw rods and screw holes. The inner ferrule 2 is hollow so that the connecting wire of the connector seat 1 can pass through the inner ferrule 2.

[0047] As for the connection relationship between the inner ferrule 2, the outer ferrule 3 and the connecting wire, Figure 1As shown, in order to allow the connecting line to flexibly rotate at the notch 20, the notch 20 is opened circumferentially on the wall of the inner ferrule 2 with the axis of the inner ferrule 2 as the center, that is, the notch 20 is arranged in an arc shape. After adopting this arrangement, when the outer ferrule 3 rotates, the connecting line moves circumferentially on the notch 20, so that the connecting line can flexibly rotate at the notch 20.

[0048] like Figures 1 to 3 As shown, in order to facilitate the connection between the connecting wire and the electrical connecting socket 30, a connecting port 31 is provided on the wall surface of the outer ring 3, and the electrical connecting socket 30 is installed in the connecting port 31; the distance between the top end of the notch 20 and the bottom end of the notch 20 is greater than the diameter of the connecting port 31, that is, the diameter of the notch 20 is greater than the diameter of the connecting port 31. After adopting this setting method, the notch 20 is larger than the connecting port 31, and the connecting wire can be better extended from the notch 20 and connected to the electrical connecting socket 30 of the connecting port 31.

[0049] Further, such as Figure 1 As shown, in order to reduce the wear and tear of the connecting wire, the electrical connection seat 30 and the notch 20, the connecting port 31 is aligned with the notch 20. After adopting this setting, the two are aligned with each other, which not only facilitates the rotation of the connecting wire, but also reduces the loss of the connecting wire.

[0050] like Figure 2 As shown, a movable protrusion 21 is provided on the outer wall surface of the inner ring 2; at least two groove protrusions 32 are provided on the inner wall surface of the outer ring 3, and a plurality of groove protrusions 32 are arranged circumferentially with the axis of the outer ring 3 as the center, and a rotation groove 33 is formed between adjacent groove protrusions 32; the movable protrusion 21 is slidably arranged in the rotation groove 33. After adopting this arrangement, after having the movable protrusion 21 and the rotation groove 33, the rotation of the outer ring 3 is limited by the cooperation between the movable protrusion 21 and the rotation groove 33, thereby limiting the circumferential rotation range of the outer ring 3 on the inner ring 2.

[0051] There may be multiple groove body protrusions 32, multiple rotation grooves 33 may be formed, and the groove circumferences of the rotation grooves 33 may be different or the same. Those skilled in the art may adjust according to actual needs.

[0052] Further, such as Figure 2 As shown, in order to achieve selective adjustment of the circumferential rotation range of the outer ring 3, the length of the movable protrusion 21 outside the inner ring 2 is adjustable. After adopting this setting, the movable protrusion 21 can be selectively slidably installed in the rotation groove 33 of different circumferences by adjusting the length, thereby achieving selective adjustment of the circumferential rotation range of the outer ring 3.

[0053] Exemplarily, in some embodiments, a positioning pin installation hole is provided on the inner ring 2; the movable protrusion 21 is a positioning pin, and the positioning pin can be set in the positioning pin installation hole with a selectable installation depth. After adopting this setting method, the circumferential rotation range of the outer ring 3 can be selectively adjusted according to the selection of the positioning pin installation depth.

[0054] The positioning pin mounting through hole and the positioning pin may also be a combination of a threaded hole and a screw, or a combination of a through hole and an elastic rod. Those skilled in the art may make a selection according to actual needs.

[0055] For the connector seat 1, if Figure 1 and Figure 3 As shown, the connector base 1 includes a shell 10, a contact base body 11 and a snap-fit ​​component 12; both ends of the shell 10 are open, the contact base body 11 is installed in the shell 10, a plug installation channel is formed between the contact base body 11 and the shell wall of the shell 10, and the snap-fit ​​component 12 is used to snap the plug installed in the plug installation channel, and by pressing the trigger part 121 of the snap-fit ​​component 12, the plug and the socket can be quickly snap-fitted or withdrawn.

[0056] For the housing 10, Figure 1 As shown, the shell 10 includes a first cavity and a second cavity, both ends of the first cavity are open, a compression wall 101 is formed between the first cavity and the second cavity, a retaining ring groove 100 is provided on the inner wall of the first cavity, and a trigger part 121 mounting through hole is provided on the outer wall of the second cavity.

[0057] For the contact base 11, Figures 1 to 3 As shown, the contact base 11 is installed in the first cavity, and the contact base 11 and the inner wall of the first cavity form a plug installation channel for installing the plug. A connecting line is provided on the side of the contact base 11 adjacent to the inner ring 2, and a contact 110 is provided on the side of the contact base 11 away from the inner ring 2 for connecting with the plug.

[0058] Furthermore, in order to prevent the contact 110 from being accidentally touched, Figure 1 As shown, the contact base 11 includes a contact 110, a connecting line and a mounting body 111; the contact 110 is connected to the connecting line, and the contact 110 is mounted on the mounting body 111; in the direction away from the connecting line, a circle of surrounding walls for protecting the contact 110 is provided on the surrounding side of the mounting body 111. After adopting this setting method, it can effectively prevent fingers from touching the contact 110, thereby reducing the loss of the contact 110.

[0059] For the buckle component 12, if Figure 1 and Figure 3As shown, the buckle component 12 includes a snap ring 120, a trigger portion 121 and an elastic portion 122; the snap ring 120 is arranged in the first cavity, the snap ring 120 is sleeved on the outer side of the contact base body 11, the snap ring 120 is arranged in the snap ring groove 100, the snap ring 120 is slidably connected with the snap ring groove 100, and the snap ring 120 is also provided with an extension portion, the extension portion extends into the second cavity and is connected and fixed to the trigger portion 121; the trigger portion 121 is arranged in the mounting through hole of the trigger portion 121, and the trigger portion 121 is slidably connected with the mounting through hole of the trigger portion 121; the elastic portion 122 is arranged between the trigger portion 121 and the compression wall 101, and the elastic portion 122 is used to make the snap ring 120 move toward the trigger portion 121. Trend; the triggering of the trigger part 121 is used to move the snap ring 120 out of or into the plug installation channel. Through the cooperation of the snap ring 120, the trigger part 121 and the elastic part 122, the snap ring 120 can clamp the plug installed in the plug installation channel to achieve the function of quick plug-in and fixation. After adopting this setting method, when it is necessary to insert the plug socket into the plug installation channel of the connector socket 1, press the trigger part 121 to move the snap ring 120 out of the plug installation channel. When the plug socket is inserted into the plug installation channel, release the trigger part 121. The elastic part 122 can make the snap ring 120 maintain the trend of moving in the direction of the trigger part 121, so that the snap ring 120 clamps the plug socket, thereby achieving quick assembly.

[0060] The elastic part 122 may be selected, but is not limited to, a spring, an elastic sheet, etc., and those skilled in the art may make a selection according to actual needs.

[0061] It should also be pointed out that, since the trigger portion 121 is provided with a flange, the flange is clamped in the second cavity, so that the trigger portion 121 cannot be completely moved out of the mounting through hole of the trigger portion 121 .

[0062] Further, in order to achieve the guided movement of the snap ring 120, as Figure 3 As shown, a guide portion 102 is provided in the second cavity of the shell 10; a matching portion 1200 is provided on the extension portion of the retaining ring 120; the guide portion 102 is provided in the matching portion 1200, and the guide portion 102 is slidably connected to the matching portion 1200. After adopting this setting method, the retaining ring 120 can achieve guided movement under the cooperation of the guide portion 102 and the matching portion 1200.

[0063] Exemplarily, the matching mode of the matching portion 1200 and the guide portion 102 can be a combination of a guide post and a guide groove, and those skilled in the art can make a selection according to actual needs.

[0064] Embodiment 2

[0065] The second embodiment of the utility model provides an endoscope, which applies the rotatable joint of the first embodiment. After adopting this setting method, when the user operates, the connecting line can adjust the extension direction according to the use requirements, thereby improving the operational flexibility of the endoscope.

[0066] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A rotatable joint, characterized in that: include: A connector base, wherein the connector base is provided with a connecting wire and a contact, and the connecting wire is used to connect to the contact; An inner ferrule, the inner ferrule is mounted on the connector seat, a notch is provided on the wall surface of the inner ferrule, the connecting wire passes through the inner ferrule and extends out of the notch; An outer ring, wherein the outer ring is sleeved on the outside of the circumference of the inner ring, the outer ring is rotatably connected to the inner ring, an electrical connection seat is provided on the wall surface of the outer ring, the electrical connection seat is sleeved outside the connecting wire, the electrical connection seat is used to connect to an external device, and the rotation of the outer ring is used to adjust the extension direction of the connecting wire.

2. A rotatable joint according to claim 1, characterized in that: The notch is opened circumferentially on the wall surface of the inner ring with the axis of the inner ring as the center.

3. A rotatable joint according to claim 1, characterized in that: A connection port is provided on the wall surface of the outer ring, and the electrical connection seat is installed in the connection port; The distance between the top end of the notch and the bottom end of the notch is greater than the diameter of the connecting port.

4. A rotatable joint according to claim 3, characterized in that: The connecting port is aligned with the notch.

5. A rotatable joint according to claim 1, characterized in that: A movable protrusion is provided on the outer wall surface of the inner ferrule; At least two groove body protrusions are provided on the inner wall surface of the outer ring, and the plurality of groove body protrusions are arranged circumferentially with the axis of the outer ring as the center, and a rotation groove is formed between adjacent groove body protrusions; The movable protrusion is slidably arranged in the rotation groove.

6. A rotatable joint according to claim 1, characterized in that: Also includes connectors; The connecting piece is sleeved outside the circumference of the inner ferrule, and the connecting piece is threadedly connected to the inner ferrule; An outer edge is provided on the outer wall of the inner ring, and the outer edge is arranged circumferentially with the axis of the inner ring as the center; The outer ring is arranged between the connecting member and the outer edge, a first elastic gasket and a sealing ring are compressed between the outer ring and the outer edge, and a second elastic gasket is compressed between the connecting member and the outer ring.

7. A rotatable joint according to claim 1, characterized in that: The connector seat comprises a housing, a contact seat body and a snap-on component; Both ends of the shell are open, and a snap ring groove, a trigger part installation through hole and a compression wall are provided on the shell wall of the shell; The contact base is installed in the housing, and a plug installation channel is formed between the contact base and the housing wall; The buckle component includes a buckle ring, a trigger part and an elastic part; The snap ring is sleeved on the outer side of the contact seat body, the snap ring is arranged in the snap ring groove, and the snap ring is slidably connected with the snap ring groove; The trigger part is arranged in the trigger part mounting through hole, the trigger part is slidably connected with the trigger part mounting through hole, and the compression wall is arranged between the trigger part and the clamping ring; The elastic part is arranged between the trigger part and the compression wall, and the elastic part is used to make the clamp ring tend to move toward the trigger part; The triggering of the triggering portion is used to move the snap ring out of or into the plug installation channel.

8. A rotatable joint according to claim 7, characterized in that: A guiding portion is provided on the shell wall of the shell, and a matching portion is provided on the clamping ring. The clamping ring is guided and moved under the action of the guiding portion and the matching portion.

9. A rotatable joint according to claim 7, characterized in that: The contact base comprises the contact, the connecting wire and a mounting body; The contact is connected to the connecting wire, and the contact is mounted on the mounting body; In a direction away from the connecting line, a circle of surrounding walls for protecting the contacts is provided on the circumference of the mounting body.

10. An endoscope, characterized in that: The rotatable joint according to any one of claims 1 to 9 is applied.

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