Connector housing assembly and connector

Abstract

The utility model discloses a connector housing assembly and a connector. The connector housing assembly includes: a base having an inner cavity and an inner flange formed on an inner circumferential surface of the inner cavity; the first shell is suitable for being inserted into the inner cavity of the base in the axial direction of the inner cavity, and an outer flange is formed on the first shell; and a wave spring axially compressed between the inner flange and the outer flange such that the first housing is axially movable relative to the base between an unlocked position and a locked position. An inner gear is formed on the inner circumferential face of the base, an outer gear is formed on the outer circumferential face of the first shell, and the inner gear and the outer gear are bevel gears inclined relative to the axial direction of the inner cavity. The internal gear engages with the external gear to prevent rotation of the first housing when the first housing is in the locked position, and the internal gear is separated from the external gear to allow rotation of the first housing when the first housing is in the unlocked position. Therefore, the rotating operation force for adjusting the direction of the first shell can be reduced, and the direction of the first shell can be adjusted more easily.

Description

Technical Field

[0001] The utility model relates to a connector housing component and a connector comprising the connector housing component. Background Art

[0002] In the prior art, the housing of the connector is fastened to the mounting panel by bolts. Therefore, in the prior art, after being mounted on the mounting panel, the housing of the connector cannot rotate relative to the mounting panel. However, in some applications, the orientation (or angle) of the housing of the connector needs to be adjustable as needed. Therefore, the existing connector is not suitable for this situation, which limits the application range of the connector.

[0003] In the prior art, in order to be able to adjust the orientation of the housing of the connector, a separate housing is proposed, which generally includes a base, a first housing and a second housing. The two ends of the first housing are matched with the base and the second housing respectively. The base is used to be fixed on the mounting panel, and a coil spring is arranged between the first housing and the base, so that the first housing can move axially between an unlocked position and a locked position relative to the base. When the first housing is axially moved from the locked position to the unlocked position, the first housing can rotate relative to the base, so that the orientation of the first housing and the second housing can be adjusted. However, in the prior art, the axial movement distance of the first housing between the unlocked position and the locked position is large, and the compression amount of the coil spring is large, resulting in the need to apply a large operating force on the first housing when adjusting the orientation of the first housing, making it difficult to adjust the orientation of the first housing. Utility Model Content

[0004] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0005] According to one aspect of the utility model, a connector housing assembly is provided.

[0006] The connector housing assembly includes: a base, which is suitable for being fixed to a mounting panel and has a hollow inner cavity and an inner flange formed on the inner circumferential surface of the inner cavity; a first housing, one end of which is suitable for being inserted into the inner cavity of the base along the axial direction of the inner cavity and having an outer flange formed on the outer circumferential surface of one end; and a wave spring, which is axially compressed between the inner flange and the outer flange, so that the first housing can move axially between a locked position and an unlocked position relative to the base. An internal gear is formed on the inner circumferential surface of the base, and an external gear is formed on the outer circumferential surface of the first housing, and the internal gear and the external gear are helical gears inclined to the axial direction of the inner cavity. The internal gear meshes with the external gear when the first housing is in the locked position to prevent the first housing from rotating around the axis of the inner cavity relative to the base. The internal gear is separated from the external gear when the first housing is in the unlocked position to allow the first housing to rotate around the axis of the inner cavity relative to the base.

[0007] According to an exemplary embodiment of the utility model, the first shell is suitable for automatically resetting from the unlocked position to the locked position under the action of the elastic reset force of the wave spring; and when the first shell is in the locked position, the wave spring applies a predetermined axial thrust on the first shell to keep the first shell in the locked position.

[0008] According to another exemplary embodiment of the utility model, the external gear includes a plurality of first teeth, and the plurality of first teeth are evenly spaced apart in the circumferential direction of one end of the first shell; the internal gear includes a plurality of second teeth, and the plurality of second teeth are evenly spaced apart in the circumferential direction of the inner cavity of the base; the first tooth is suitable for engaging into the tooth gap between two adjacent second teeth, and the second tooth is suitable for engaging into the tooth gap between two adjacent first teeth.

[0009] According to another exemplary embodiment of the utility model, the inner cavity of the base has a top opening and a bottom opening opposite to each other in its axial direction, one end of the first shell is inserted into the inner cavity of the base from the top opening of the base, and the internal gear is close to the top opening of the base.

[0010] According to another exemplary embodiment of the present invention, the connector housing assembly further comprises: a disc spring axially compressed between the wave spring and the outer flange of the first housing, for applying additional axial thrust to the first housing.

[0011] According to another exemplary embodiment of the utility model, the disc spring includes: an annular portion having an inner periphery and an outer periphery opposite to each other in the radial direction; and a plurality of elastic arms connected to the inner periphery of the annular portion and distributed at intervals in the circumferential direction of the annular portion, and the plurality of elastic arms extend obliquely toward the outer peripheral surface of one end of the first shell and abut against the outer flange of the first shell.

[0012] According to another exemplary embodiment of the utility model, the connector housing assembly also includes: a washer, which is supported on the top surface of the annular portion of the disc spring and is used to support the wave spring, and the wave spring is axially compressed between the washer and the inner flange of the base.

[0013] According to another exemplary embodiment of the utility model, the connector housing assembly further includes: a sealing ring, which is arranged in the bottom opening of the base and is sleeved on one end of the first housing, and when the base is mounted on the mounting panel, the sealing ring is axially squeezed between the base and the mounting panel to achieve sealing between the two.

[0014] According to another exemplary embodiment of the present invention, a connection hole allowing a threaded connector to pass through is formed on the base, so that the base can be fastened to the mounting panel by the threaded connector passing through the connection hole.

[0015] According to another exemplary embodiment of the utility model, the first shell also has another end for mating with the second shell, and a sealing ring installation groove is formed on the outer peripheral surface of the other end of the first shell, and the central axis of the sealing ring installation groove coincides with the central axis of the other end of the first shell; the connector shell assembly also includes a sealing ring, which is installed in the sealing ring installation groove and is suitable for being radially squeezed between the first shell and the second shell to achieve sealing between the two.

[0016] According to another exemplary embodiment of the present invention, a central axis of one end of the first shell is perpendicular to a central axis of the other end of the first shell, so that the first shell is L-shaped.

[0017] According to another exemplary embodiment of the utility model, the connector housing assembly further includes: a second housing, the other end of the first housing being inserted into the rear end of the second housing, and the sealing ring being radially squeezed between the first housing and the second housing to achieve sealing therebetween.

[0018] According to another exemplary embodiment of the utility model, a protrusion axially opposite to one end of the first shell is formed on the outer side of the first shell, and the second shell has a connecting portion extending to the top surface of the protrusion; the connector shell assembly also includes a screw, which passes through the connecting portion and is threadedly connected to the threaded hole of the protrusion to fix the second shell to the first shell.

[0019] According to another exemplary embodiment of the utility model, two convex ribs extending axially along the other end of the first shell are formed on the inner circumferential surface of the other end of the first shell, and the two convex ribs are used to respectively cooperate with two grooves on the terminal retaining body; the two convex ribs have different sizes in the circumferential direction of the other end of the first shell to ensure that the terminal retaining body is inserted into the other end of the first shell in the correct orientation.

[0020] According to another exemplary embodiment of the utility model, a supporting protrusion is formed on the inner circumferential surface of the other end of the first shell, and the supporting protrusion is suitable for abutting against the rear end surface of the terminal retaining body along the axial direction of the terminal retaining body to support and position the terminal retaining body.

[0021] According to another aspect of the utility model, a connector is provided, which includes: the aforementioned connector housing assembly; a terminal retaining body formed with a plurality of terminal insertion holes; and a plurality of terminals, which are respectively inserted into the plurality of terminal insertion holes, the front portion of the terminal retaining body being inserted into the second housing, and the rear portion of the terminal retaining body being inserted into the first housing.

[0022] According to an exemplary embodiment of the utility model, the terminal retaining body includes a front retaining body and a rear retaining body that are detachably assembled together, and the front retaining body and the rear retaining body are respectively inserted into the second shell and the first shell; a locking spring sheet is formed on the rear retaining body, and the locking spring sheet engages with a recess on the terminal to lock the terminal in the terminal insertion hole.

[0023] According to another exemplary embodiment of the utility model, the locking spring sheet on the rear retaining body is inserted into the terminal socket of the front retaining body, and the inner peripheral surface of the terminal socket of the front retaining body abuts against the locking spring sheet to keep the locking spring sheet in the locked position.

[0024] According to another exemplary embodiment of the utility model, an external thread suitable for threaded connection with a mating shell of a mating connector is formed on the outer peripheral surface of the front end of the second shell; the terminal has a columnar mating portion extending into the front end of the second shell, and the columnar mating portion is suitable for mating with a mating terminal of the mating connector.

[0025] According to another exemplary embodiment of the present invention, the connector further includes: a cable electrically connected to a rear end of the terminal and led out from a bottom opening of the base.

[0026] In the aforementioned exemplary embodiments of the utility model, the axial movement distance of the first shell between the unlocked position and the locked position is small, and the compression amount of the spring is small. Therefore, the rotational operating force for adjusting the orientation of the first shell can be reduced, making the orientation adjustment of the first shell easier.

[0027] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional schematic diagram showing a connector according to an exemplary embodiment of the utility model;

[0029] Figure 2 An exploded schematic diagram showing a connector according to an exemplary embodiment of the present utility model;

[0030] Figure 3 An exploded schematic diagram showing a first housing and a base of a connector according to an exemplary embodiment of the present utility model;

[0031] Figure 4 An exploded schematic diagram showing a first housing assembly of a connector according to an exemplary embodiment of the present utility model;

[0032] Figure 5 An axial cross-sectional view showing a first housing and a base of a connector according to an exemplary embodiment of the present invention, wherein the first housing is in a locked position;

[0033] Figure 6 An axial cross-sectional view showing a first housing and a base of a connector according to an exemplary embodiment of the present invention, wherein the first housing is in an unlocked position;

[0034] Figure 7 An axial cross-sectional view of a connector according to an exemplary embodiment of the present invention is shown, wherein the base is not shown;

[0035] Figure 8 An exploded schematic diagram showing a connector according to an exemplary embodiment of the present utility model, wherein the base is not shown;

[0036] Fig. 9 A schematic diagram showing a terminal and a terminal retaining body of a connector according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0037] The technical solution of the utility model is further specifically described below through examples and in combination with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the implementation mode of the utility model with reference to the accompanying drawings is intended to explain the overall utility model concept of the utility model, and should not be understood as a limitation of the utility model.

[0038] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0039] According to an overall technical concept of the utility model, a connector housing assembly is provided. The connector housing assembly includes: a base, which is suitable for being fixed to a mounting panel and has a hollow inner cavity and an inner flange formed on the inner circumferential surface of the inner cavity; a first housing, one end of which is suitable for being inserted into the inner cavity of the base along the axial direction of the inner cavity and having an outer flange formed on the outer circumferential surface of one end; and a wave spring, which is axially compressed between the inner flange and the outer flange, so that the first housing can move axially between a locked position and an unlocked position relative to the base. An internal gear is formed on the inner circumferential surface of the base, and an external gear is formed on the outer circumferential surface of the first housing, and the internal gear and the external gear are helical gears inclined to the axial direction of the inner cavity. The internal gear meshes with the external gear when the first housing is in the locked position to prevent the first housing from rotating around the axis of the inner cavity relative to the base. The internal gear is separated from the external gear when the first housing is in the unlocked position to allow the first housing to rotate around the axis of the inner cavity relative to the base.

[0040] According to another overall technical concept of the utility model, a connector is provided, which includes: the aforementioned connector housing assembly; a terminal retaining body formed with a plurality of terminal insertion holes; and a plurality of terminals, which are respectively inserted into the plurality of terminal insertion holes, the front portion of the terminal retaining body being inserted into the second housing, and the rear portion of the terminal retaining body being inserted into the first housing.

[0041] Figure 1 A three-dimensional schematic diagram showing a connector according to an exemplary embodiment of the utility model; Figure 2 An exploded schematic diagram showing a connector according to an exemplary embodiment of the present utility model; Figure 3An exploded schematic diagram showing a first housing 1 and a base 3 of a connector according to an exemplary embodiment of the present utility model; Figure 4 An exploded schematic diagram showing a first housing assembly of a connector according to an exemplary embodiment of the present utility model; Figure 5 An axial cross-sectional view showing a first housing 1 and a base 3 of a connector according to an exemplary embodiment of the present utility model, wherein the first housing 1 is in a locked position; Figure 6 An axial cross-sectional view showing a first housing 1 and a base 3 of a connector according to an exemplary embodiment of the present utility model, wherein the first housing 1 is in an unlocked position; Figure 7 An axial cross-sectional view of a connector according to an exemplary embodiment of the present utility model is shown, wherein the base 3 is not shown; Figure 8 An exploded schematic diagram of a connector according to an exemplary embodiment of the present utility model is shown, wherein the base 3 is not shown; Fig. 9 A schematic diagram showing a terminal 5 and a terminal holding body 4 of a connector according to an exemplary embodiment of the present invention.

[0042] like Figures 1 to 9 As shown, in an exemplary embodiment of the utility model, a connector housing assembly is disclosed. The connector housing assembly includes: a base 3, a first housing 1 and a wave spring 12. The base 3 is suitable for being fixed to a mounting panel (not shown) and has a hollow inner cavity 301 and an inner flange 31 formed on the inner circumferential surface of the inner cavity 301. One end of the first housing 1 is suitable for being inserted into the inner cavity 301 of the base 3 along the axial direction of the inner cavity 301 and an outer flange 11 is formed on the outer circumferential surface of one end thereof. The wave spring 12 is axially compressed between the inner flange 31 and the outer flange 11, so that the first housing 1 can be in a locked position ( Figure 5 shown in the unlocked position ( Figure 6 The inner circumference of the base 3 is formed with an internal gear 33, and the outer circumference of the first housing 1 is formed with an external gear 13. The internal gear 33 meshes with the external gear 13 when the first housing 1 is in the locked position, and is separated from the external gear 13 when the first housing 1 is in the unlocked position. The internal gear 33 and the external gear 13 are helical gears inclined with respect to the axial direction of the inner cavity 301, so as to reduce the axial movement of the first housing 1 between the unlocked position and the locked position.

[0043] like Figures 1 to 9As shown, in the illustrated embodiment, the internal gear 33 meshes with the external gear 13 when the first housing 1 is in the locked position to prevent the first housing 1 from rotating relative to the base 3 around the axis of the inner cavity 301. The internal gear 33 is separated from the external gear 13 when the first housing 1 is in the unlocked position to allow the first housing 1 to rotate relative to the base 3 around the axis of the inner cavity 301. In the illustrated embodiment, since the internal gear 33 and the external gear 13 are helical gears inclined with respect to the axial direction of the inner cavity 301, when a predetermined rotational force is applied to the first housing 1, the internal gear 33 applies an oblique upward thrust on the external gear 13, so that the first housing 1 moves upward from the locked position to the unlocked position relative to the base 3. Therefore, the first housing 1 can automatically move from the locked position to the unlocked position under the action of the predetermined rotational force, so that the rotation operation of the first housing 1 becomes simpler.

[0044] like Figures 1 to 9 As shown, in the illustrated embodiment, the first housing 1 is adapted to automatically reset from the unlocked position to the locked position under the elastic reset force of the wave spring 12. When the first housing 1 is in the locked position, the wave spring 12 applies a predetermined axial thrust on the first housing 1 to keep the first housing 1 in the locked position.

[0045] like Figures 1 to 9 As shown, in the illustrated embodiment, the external gear 13 includes a plurality of first teeth, and the plurality of first teeth are evenly spaced apart in the circumferential direction of one end of the first housing 1; the internal gear 33 includes a plurality of second teeth, and the plurality of second teeth are evenly spaced apart in the circumferential direction of the inner cavity 301 of the base 3; the first teeth are suitable for engaging into the tooth gap between two adjacent second teeth, and the second teeth are suitable for engaging into the tooth gap between two adjacent first teeth.

[0046] like Figures 1 to 9 As shown, in the illustrated embodiment, the inner cavity 301 of the base 3 has a top opening and a bottom opening opposite to each other in its axial direction, one end of the first shell 1 is inserted into the inner cavity 301 of the base 3 from the top opening of the base 3, and the internal gear 33 is close to the top opening of the base 3.

[0047] like Figures 1 to 9 As shown, in the illustrated embodiment, the connector housing assembly further includes a disc spring 14 , which is axially compressed between the wave spring 12 and the outer flange 11 of the first housing 1 to apply additional axial thrust to the first housing 1 .

[0048] like Figures 1 to 9As shown, in the illustrated embodiment, the disc spring 14 includes: an annular portion 140 and a plurality of elastic arms 141. The annular portion 140 has an inner periphery and an outer periphery opposite to each other in the radial direction thereof. The plurality of elastic arms 141 are connected to the inner periphery of the annular portion 140 and are spaced apart in the circumferential direction of the annular portion 140. The plurality of elastic arms 141 extend obliquely toward the outer peripheral surface of one end of the first housing 1 and abut against the outer flange 11 of the first housing 1.

[0049] like Figures 1 to 9 As shown, in the illustrated embodiment, the connector housing assembly further includes a washer 15, which is supported on the top surface of the annular portion 140 of the disc spring 14 for supporting the wave spring 12. The wave spring 12 is axially compressed between the washer 15 and the inner flange 31 of the base 3.

[0050] like Figures 1 to 9 As shown, in the illustrated embodiment, the connector housing assembly further includes a sealing ring 7, which is disposed in the bottom opening of the base 3 and is sleeved on one end of the first housing 1. When the base 3 is mounted on the mounting panel, the sealing ring 7 is axially pressed between the base 32 and the mounting panel to achieve sealing between the two.

[0051] like Figures 1 to 9 As shown, in the illustrated embodiment, a connection hole 3a is formed on the base 3 to allow a threaded connector (not shown, for example, a bolt) to pass through, so that the base 3 can be fastened to the mounting panel by the threaded connector passing through the connection hole 3a.

[0052] like Figures 1 to 9 As shown, in the illustrated embodiment, the first housing 1 further has another end for mating with the second housing 2, and a sealing ring 8 mounting groove 18 is formed on the outer circumferential surface of the other end of the first housing 1, and the central axis of the sealing ring 8 mounting groove 18 coincides with the central axis of the other end of the first housing 1. The connector housing assembly further includes a sealing ring 8, which is mounted in the sealing ring 8 mounting groove 18 and is suitable for being radially squeezed between the first housing 1 and the second housing 2 to achieve sealing therebetween.

[0053] like Figures 1 to 9 As shown, in the illustrated embodiment, the central axis of one end of the first shell 1 is perpendicular to the central axis of the other end of the first shell 1, so that the first shell 1 is L-shaped.

[0054] like Figures 1 to 9 As shown, in the illustrated embodiment, the connector housing assembly further includes a second housing 2, and the other end of the first housing 1 is inserted into the rear end of the second housing 2. The sealing ring 8 is radially squeezed between the first housing 1 and the second housing 2 to achieve sealing therebetween.

[0055] like Figures 1 to 9As shown, in the illustrated embodiment, a protrusion 1c axially opposite to one end of the first housing 1 is formed on the outer side of the first housing 1, and the second housing 2 has a connecting portion 2c extending to the top surface of the protrusion 1c. The connector housing assembly also includes a screw 6, which passes through the connecting portion 2c and is threadedly connected to the threaded hole 1d of the protrusion 1c to fix the second housing 2 to the first housing 1.

[0056] like Figures 1 to 9 As shown, in the illustrated embodiment, two convex ribs 1a extending along the axial direction of the other end of the first housing 1 are formed on the inner circumferential surface of the other end of the first housing 1, and the two convex ribs 1a are used to respectively cooperate with the two grooves 4a on the terminal retaining body 4. The two convex ribs 1a have different sizes in the circumferential direction of the other end of the first housing 1 to ensure that the terminal retaining body 4 is inserted into the other end of the first housing 1 in the correct orientation.

[0057] like Figures 1 to 9 As shown, in the illustrated embodiment, a support protrusion 1b is formed on the inner circumferential surface of the other end of the first shell 1, and the support protrusion 1b is suitable for abutting against the rear end surface of the terminal retaining body 4 along the axial direction of the terminal retaining body 4 to support and position the terminal retaining body 4.

[0058] like Figures 1 to 9 As shown, in another exemplary embodiment of the utility model, a connector is also disclosed. The connector includes: the aforementioned connector housing assembly, a terminal retaining body 4 and a plurality of terminals 5. The terminal retaining body 4 is formed with a plurality of terminal insertion holes 40. The plurality of terminals 5 are respectively inserted into the plurality of terminal insertion holes 40. The front portion of the terminal retaining body 4 is inserted into the second housing 2, and the rear portion of the terminal retaining body 4 is inserted into the first housing 1.

[0059] like Figures 1 to 9 As shown, in the illustrated embodiment, the terminal retaining body 4 includes a front retaining body 42 and a rear retaining body 41 that are detachably assembled together, and the front retaining body 42 and the rear retaining body 41 are respectively inserted into the second housing 2 and the first housing 1. A locking spring 41a is formed on the rear retaining body 41, and the locking spring 41a engages with the recess on the terminal 5 to lock the terminal 5 in the terminal insertion hole 40.

[0060] like Figures 1 to 9 As shown, in the illustrated embodiment, the locking spring piece 41a on the rear retaining body 41 is inserted into the terminal socket 40 of the front retaining body 42, and the inner peripheral surface of the terminal socket 40 of the front retaining body 42 abuts against the locking spring piece 41a to keep the locking spring piece 41a in the locked position.

[0061] like Figures 1 to 9As shown, in the embodiment shown in the figure, an external thread 2a suitable for threaded connection with a mating housing (not shown) of a mating connector (not shown) is formed on the outer peripheral surface of the front end of the second housing 2. The terminal 5 has a columnar mating portion extending into the front end of the second housing 2, and the columnar mating portion is suitable for mating with a mating terminal (not shown) of the mating connector.

[0062] like Figures 1 to 9 As shown, in the illustrated embodiment, the connector further includes a cable (not shown), which is electrically connected to the rear end of the terminal 5 and led out from the bottom opening of the base 3 .

[0063] Those skilled in the art will appreciate that the embodiments described above are exemplary and can be improved upon by those skilled in the art. The structures described in the various embodiments can be freely combined without causing any conflicts in structure or principle, and these changes should fall within the scope of protection of the present utility model.

[0064] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementation modes of the present invention and should not be construed as limiting the present invention.

[0065] Although some embodiments of the general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined by the claims and their equivalents.

[0066] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element number of the claims should not be construed as limiting the scope of the present invention.

Claims

1. A connector housing assembly, characterized in that: include: A base (3) adapted to be fixed to a mounting panel and having a hollow inner cavity (301) and an inner flange (31) formed on an inner circumferential surface of the inner cavity (301); A first shell (1), one end of which is suitable for being inserted into the inner cavity (301) of the base (3) along the axial direction of the inner cavity (301) and having an outer flange (11) formed on the outer peripheral surface of one end; and a wave spring (12) which is axially compressed between the inner flange (31) and the outer flange (11) so that the first housing (1) can move axially relative to the base (3) between a locked position and an unlocked position, An internal gear (33) is formed on the inner circumferential surface of the base (3), and an external gear (13) is formed on the outer circumferential surface of the first housing (1); the internal gear (33) and the external gear (13) are helical gears inclined in the axial direction of the inner cavity (301). The inner gear (33) meshes with the outer gear (13) when the first housing (1) is in the locking position, so as to prevent the first housing (1) from rotating relative to the base (3) around the axis of the inner cavity (301). The internal gear (33) is separated from the external gear (13) when the first housing (1) is in the unlocked position, so as to allow the first housing (1) to rotate relative to the base (3) around the axis of the inner cavity (301).

2. The connector housing assembly according to claim 1, characterized in that: The first housing (1) is suitable for automatically returning from the unlocking position to the locking position under the action of the elastic restoring force of the wave spring (12); and When the first housing (1) is in the locked position, the wave spring (12) applies a predetermined axial thrust to the first housing (1) to keep the first housing (1) in the locked position.

3. The connector housing assembly according to claim 1, characterized in that: The external gear (13) comprises a plurality of first teeth, and the plurality of first teeth are evenly spaced and distributed in a circumferential direction of one end of the first housing (1); The internal gear (33) comprises a plurality of second teeth, and the plurality of second teeth are evenly spaced and distributed in the circumferential direction of the inner cavity (301) of the base (3); The first tooth is adapted to engage in a tooth gap between two adjacent second teeth, and the second tooth is adapted to engage in a tooth gap between two adjacent first teeth.

4. The connector housing assembly according to claim 1, wherein: The inner cavity (301) of the base (3) has a top opening and a bottom opening which are opposite to each other in the axial direction thereof, one end of the first shell (1) is inserted into the inner cavity (301) of the base (3) from the top opening of the base (3), and the internal gear (33) is close to the top opening of the base (3).

5. The connector housing assembly according to claim 1, characterized in that: Also includes: A disc spring (14) is axially compressed between the wave spring (12) and the outer flange (11) of the first housing (1) and is used to apply additional axial thrust to the first housing (1).

6. The connector housing assembly according to claim 5, characterized in that: The disc spring (14) comprises: an annular portion (140) having an inner periphery and an outer periphery opposite to each other in a radial direction thereof; and A plurality of elastic arms (141) are connected to the inner periphery of the annular portion (140) and are spaced apart and distributed in the circumferential direction of the annular portion (140). The plurality of elastic arms (141) extend obliquely toward the outer peripheral surface of one end of the first shell (1) and abut against the outer flange (11) of the first shell (1).

7. The connector housing assembly according to claim 6, characterized in that: Also includes: A washer (15) is supported on the top surface of the annular portion (140) of the disc spring (14) and is used to support the wave spring (12). The wave spring (12) is axially compressed between the washer (15) and the inner flange (31) of the base (3).

8. The connector housing assembly according to claim 1, wherein: Also includes: A sealing ring (7) is arranged in the bottom opening of the base (3) and is sleeved on one end of the first shell (1). When the base (3) is mounted on the mounting panel, the sealing ring (7) is axially pressed between the base (3) (2) and the mounting panel to achieve sealing between the two.

9. The connector housing assembly according to claim 1, characterized in that: A connection hole (3a) is formed on the base (3) to allow a threaded connector to pass through, so that the base (3) can be fastened to the installation panel by the threaded connector passing through the connection hole (3a).

10. The connector housing assembly according to any one of claims 1 to 9, characterized in that: The first shell (1) further comprises another end for mating with the second shell (2), a sealing ring installation groove (18) is formed on the outer peripheral surface of the other end of the first shell (1), and the central axis of the sealing ring installation groove (18) coincides with the central axis of the other end of the first shell (1); The connector housing assembly further comprises a sealing ring (8), wherein the sealing ring (8) is installed in the sealing ring installation groove (18) and is suitable for being radially pressed between the first housing (1) and the second housing (2) to achieve sealing therebetween.

11. The connector housing assembly according to claim 10, characterized in that: The central axis of one end of the first shell (1) is perpendicular to the central axis of the other end of the first shell (1), so that the first shell (1) is L-shaped.

12. The connector housing assembly according to claim 10, wherein: Also includes: a second shell (2), wherein the other end of the first shell (1) is inserted into the rear end of the second shell (2), The sealing ring (8) is radially pressed between the first shell (1) and the second shell (2) to achieve sealing between the two.

13. The connector housing assembly according to claim 12, wherein: A protrusion (1c) is formed on the outer side of the first shell (1) and is axially opposite to one end of the first shell (1); the second shell (2) has a connecting portion (2c) extending to the top surface of the protrusion (1c); The connector housing assembly further comprises a screw (6) which passes through the connecting portion (2c) and is threadedly connected to the threaded hole (1d) of the protruding portion (1c) to fix the second housing (2) to the first housing (1).

14. The connector housing assembly according to claim 12, wherein: Two convex ribs (1a) extending axially along the other end of the first shell (1) are formed on the inner circumferential surface of the other end of the first shell (1), and the two convex ribs (1a) are used to respectively cooperate with two grooves (4a) on the terminal retaining body (4); The two convex ribs (1a) have different sizes in the circumferential direction of the other end of the first housing (1) to ensure that the terminal retaining body (4) is inserted into the other end of the first housing (1) in a correct orientation.

15. The connector housing assembly according to claim 14, characterized in that: A supporting protrusion (1b) is formed on the inner peripheral surface of the other end of the first shell (1), and the supporting protrusion (1b) is suitable for abutting against the rear end surface of the terminal retaining body (4) along the axial direction of the terminal retaining body (4) to support and position the terminal retaining body (4).

16. A connector, characterized in that: include: The connector housing assembly according to any one of claims 1 to 15; A terminal retaining body (4) is formed with a plurality of terminal insertion holes (40); and A plurality of terminals (5) are respectively inserted into the plurality of terminal insertion holes (40), The front portion of the terminal holding body (4) is inserted into the second housing (2), and the rear portion of the terminal holding body (4) is inserted into the first housing (1).

17. The connector according to claim 16, characterized in that: The terminal retaining body (4) comprises a front retaining body (42) and a rear retaining body (41) which are detachably assembled together, and the front retaining body (42) and the rear retaining body (41) are respectively inserted into the second housing (2) and the first housing (1); A locking spring (41a) is formed on the rear retaining body (41), and the locking spring (41a) engages with a recess on the terminal (5) to lock the terminal (5) in the terminal insertion hole (40).

18. The connector according to claim 17, characterized in that: The locking spring piece (41a) on the rear retaining body (41) is inserted into the terminal insertion hole (40) of the front retaining body (42), and the inner peripheral surface of the terminal insertion hole (40) of the front retaining body (42) abuts against the locking spring piece (41a) to keep the locking spring piece (41a) in a locked position.

19. The connector according to claim 16, characterized in that: An external thread (2a) suitable for threaded connection with a mating housing of a mating connector is formed on the outer peripheral surface of the front end of the second housing (2); and The terminal (5) has a columnar mating portion extending into the front end of the second housing (2), and the columnar mating portion is suitable for mating with the mating terminal of the mating connector.

20. The connector according to claim 19, characterized in that Also includes: A cable is electrically connected to the rear end of the terminal (5) and is led out from the bottom opening of the base (3).

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