CN211742104U

CN211742104U - Adapter box

Info

Publication number: CN211742104U
Application number: CN201990000121.2U
Authority: CN
Inventors: 廖卓文
Original assignee: Guangdong Gopod Group Holding Co Ltd
Current assignee: Guangdong Gopod Group Holding Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-10-23
Anticipated expiration: 2029-09-04
Also published as: WO2021042302A1

Abstract

The utility model provides a switching box, including housing member (10) and changeover mechanism, housing member (10) are including shell main part (11), first lid (12) and second lid (13), shell main part (11) have holding chamber (106) and spacing hole (101), first lid (12) are seted up and can be pegged graft with first power adapter (31) adaptation and be used for restricting first power adapter (31) first spacing groove (121) of position, second lid (13) are seted up and can be pegged graft with second power adapter (32) adaptation and be used for restricting second power adapter (32) second spacing groove (133) of position. The utility model discloses a housing member (10) has realized the stable connection of changeover mechanism and first power adapter (31) or second power adapter (32), avoids appearing the condition of contact failure because changeover mechanism rocks relatively with power adapter, has saved the space simultaneously.

Description

Adapter box

Technical Field

The utility model belongs to the technical field of the switching equipment, especially, relate to a switching box.

Background

The power adapter is also called an external power supply, is a power supply voltage conversion device for small portable electronic equipment and electronic appliances, and is commonly used in small electronic products such as mobile phones, liquid crystal displays, notebook computers and the like. The existing power adapters have a plurality of specifications and different sizes, but each power adapter only provides one USB interface, and cannot be compatible with most of the existing equipment. In order to realize multi-interface switching of the power adapter, the power adapter is usually directly connected with a conventional adapter, but the adapter occupies a large space, which hinders a user to operate the electronic device, and the adapter is easily in poor contact with the power adapter when the position of the adapter is changed or collided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a switching box aims at solving prior art adapter occupation space and with the power adapter between easily take place the technical problem of the condition of contact failure.

The utility model discloses a realize like this, a switching box for connect first power adapter or second power adapter, wherein, first power adapter or second power adapter all has electric mortiser mouth and electric plug, first power adapter's cross-section size with second power adapter's cross-section variation in size, the switching box includes:

the shell component comprises a shell main body, a first cover body and a second cover body, wherein the first cover body can be detachably connected to the shell main body, the second cover body can be detachably connected to the shell main body, the shell main body is provided with an accommodating cavity, a limiting hole communicated to the accommodating cavity and an inserting hole communicated to the accommodating cavity, the first cover body and the second cover body can respectively cover the limiting hole, the limiting hole is used for inserting the first power adapter or the second power adapter into the accommodating cavity, the first cover body is provided with a first limiting groove which can be adaptively inserted with the first power adapter and used for limiting the position of the first power adapter, and the second cover body is provided with a second limiting groove which can be adaptively inserted with the second power adapter and used for limiting the position of the second power adapter;

the switching mechanism comprises a switching controller positioned in the accommodating cavity, an electric connector electrically connected with the switching controller and a connecting assembly electrically connected with the switching controller and used for realizing the electric connection with external electronic equipment, the electric connector is positioned in the accommodating cavity and extends towards the direction of the limiting hole, and the electric connector is used for being plugged with the electric plug interface so as to realize the electric connection between the switching controller and the first power controller or the second power controller.

In this embodiment, the housing member further includes a partition plate connected to an inner wall of the accommodating chamber, the partition plate divides the accommodating chamber into an adapting chamber for placing the adapting mechanism and a power supply chamber for placing the first power adapter or the second power adapter, the partition plate is provided with a communication hole, and the electrical connector is inserted into the communication hole and extends to the power supply chamber.

In this embodiment, the communication hole is adapted to the size of the cross section of the electrical connector.

In this embodiment, the housing member is provided with an avoidance hole for avoiding the electrical plug, and the avoidance hole enables the electrical plug to extend out of the accommodating cavity and be electrically connected with the external electronic device.

In this embodiment, the height of the power cavity is smaller than the height of the first power adapter or the second power adapter, and the avoiding hole is formed in the first cover body or the second cover body.

In this embodiment, a first deformation hole penetrating through the first limiting groove is formed in the groove bottom of the first limiting groove, and a second deformation hole penetrating through the second limiting groove is formed in the groove bottom of the second limiting groove.

In this embodiment, the constant head tank has been seted up to the shell main part, the casing component is still including locating first lid and with the first arch of constant head tank adaptation and locating the second lid and with the second of constant head tank adaptation is protruding, first lid passes through first arch with the constant head tank joint, the second lid passes through the second arch with the constant head tank joint.

In this embodiment, the first protrusion and the second protrusion are both hemispherical.

In this embodiment, the second cover body includes a cover main body and a limit plate connected to the cover main body, and the cover main body and the limit plate together enclose to form the second limit groove.

In this embodiment, the adapting mechanism further includes an adapting line electrically connected to the adapting controller and an electrical adapter electrically connected to the adapting line.

In this embodiment, the shell main part set up with the joint groove of electric adapter adaptation joint.

In this embodiment, the adapter mechanism further includes an adapter connected to the patch cord, and the electrical adapter is connected to one side of the adapter.

In this embodiment, the shell main part still seted up be used for with the fixed slot of adapter joint, the joint groove is located the tank bottom of fixed slot.

In this embodiment, the adapter is made of a rubber material.

In this embodiment, the connecting assembly includes at least one of a USB-Type-C interface seat, a USB-Type-B interface seat, a TF card interface seat, an audio interface seat, and an HDMI interface seat, and the housing main body is provided with a plurality of alignment holes communicating to the adapter cavity and disposed opposite to the connecting assembly.

The utility model discloses technical effect for prior art is: the utility model discloses a housing member includes shell main part, first lid and second lid, and first lid and second lid homoenergetic can be dismantled and connect in the shell main part, and what the user can need to connect according to the change-over mechanism is that first power adapter or second power adapter select first lid or second lid and shell main part can be dismantled and be connected, and wherein, first spacing groove can be pegged graft with first power adapter adaptation, and the second spacing groove can be pegged graft with second power adapter adaptation. Thus, when the first power adapter is needed to be switched, the first power adapter is firstly placed into the accommodating cavity from the limiting hole, the electric connector is plugged into the electric plug interface, the first cover body is covered on the limiting hole, the first power adapter fixes the position due to the limiting effect of the first limiting groove, thereby realizing the fixation of the shell component to the first power adapter and the switching of the switching mechanism to the first power adapter, when the switching of the second power adapter is needed to be realized, the second power adapter is firstly put into the accommodating cavity from the limiting hole and the electric connector is plugged into the electric plug interface, then the second cover body is covered at the limiting hole, at this time, the position of the second power adapter is fixed due to the limiting effect of the second limiting groove, therefore, the fixing of the shell component to the second power adapter and the switching of the switching mechanism to the second power adapter are realized. The utility model discloses a housing member has realized the stable connection of changeover mechanism and first power adapter or second power adapter, has formed the docking station structure or the many interfaces battery charging outfit of integral type, avoids having saved the space simultaneously because changeover mechanism rocks relatively with power adapter and the bad condition of contact appears, has improved the suitability and is convenient for mass production.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an adapter box at a viewing angle according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of an adapter box at another viewing angle according to an embodiment of the present invention;

fig. 3 is an exploded view of an adapter box according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of an adapter box according to an embodiment of the present invention, wherein a first power adapter is installed in the adapter box;

fig. 5 is a cross-sectional view of an adapter box according to an embodiment of the present invention, wherein a second power adapter is installed in the adapter box.

Description of reference numerals:

10. a housing member; 101. a limiting hole; 102. avoiding holes; 103. inserting holes; 104. a clamping groove; 105. Fixing grooves; 106. an accommodating cavity; 107. a transfer cavity; 108. a power supply cavity; 109. positioning a groove; 11. a housing main body; 111. a left half shell; 112. a right half shell; 12. a first cover body; 121. a first limit groove; 122. A first deformation hole; 13. a second cover body; 131. a cover main body; 132. a limiting plate; 133. a second limit groove; 134. a second deformation hole; 14. a first protrusion; 15. a second protrusion; 16. a partition plate; 161. a communicating hole; 17. a rubber member; 21. a transfer controller; 22. an electrical connector; 23. a connecting assembly; 24. a patch cord; 25. a transfer seat; 26. an electrical adapter; 27. a transfer bracket; 301. an electric plug; 31. a first power adapter; 32. second power adapter

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "height", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

Referring to fig. 3, an embodiment of the present invention provides an adapter box for connecting a first power adapter 31 or a second power adapter 32, wherein the first power adapter 31 or the second power adapter 32 both have an electrical plug interface and an electrical plug 301, and a cross-sectional size of the first power adapter 31 is different from a cross-sectional size of the second power adapter 32. In the present embodiment, the first power adapter 31 has a height and a width corresponding to those of the second power adapter 32, but has a length larger than that of the second power adapter 32. Taking an Apple MacBook Pro power adapter as an example, the first power adapter 31 is 87W standard, and the second power adapter 32 is 65W standard. Wherein, the electric plug 301 rotates and connects on each power adapter's the casing, when not needing to use, the electric plug 301 withdraws to in the recess that the casing set up to prevent that it from receiving to collide with or wearing and tearing.

Referring to fig. 1 and 2, the adapter box includes a housing member 10 and an adapter mechanism.

Referring to fig. 3, the housing member 10 includes a housing main body 11, a first cover 12 detachably connected to the housing main body 11, a second cover 13 detachably connected to the housing main body 11, a partition plate 16 connected to the housing main body 11, a first protrusion 14 disposed on the first cover 12, and a second protrusion 15 disposed on the second cover 13, the housing main body 11 has a receiving cavity 106, a limiting hole 101 connected to the receiving cavity 106, and an inserting hole 103 connected to the receiving cavity 106, the first cover 12 and the second cover 13 can respectively cover the limiting hole 101, wherein the receiving cavity 106 and the limiting block have the same length and width as the first power adapter 31, the receiving cavity 106 has a height smaller than the first power adapter 31 and the second power adapter 32, the first power adapter 31 and the second power adapter 32 are inserted into the limiting hole 101 along the height direction thereof, and the limiting hole 101 is used for inserting the first power adapter 31 or the second power adapter 32 into the receiving cavity 106, the first cover 12 defines a first limiting groove 121 adapted to be plugged into the first power adapter 31 and used for limiting the position of the first power adapter 31, and the second cover 13 defines a second limiting groove 133 adapted to be plugged into the second power adapter 32 and used for limiting the position of the second power adapter 32.

Referring to fig. 3, the cross section of the first limiting groove 121 is adapted to the cross section of the first power adapter 31 in the plane where the length and the width are located, and the cross section of the second limiting groove 133 is adapted to the cross section of the second power adapter 32 in the plane where the length and the width are located. The height of the power cavity 108 is smaller than the height of the first power adapter 31 or the second power adapter 32, and the first limiting groove 121 and the second limiting groove 133 both have a certain height, so as to increase the contact area with the first power adapter 31 or the second power adapter 32 and improve the connection stability. For ease of assembly, the housing body 11 includes opposing left and

right housing halves

111, 112.

Referring to fig. 3 to fig. 5, the adapting mechanism includes an adapting controller 21 located in the receiving cavity 106, an adapting bracket 27 for forming the adapting controller 21, an electrical connector 22 electrically connected to the adapting controller 21, a connecting assembly 23 electrically connected to the adapting controller 21 for electrically connecting to an external electronic device, a patch cord 24 electrically connected to the adapting controller 21, an adapter 25 connected to the patch cord 24, and an electrical connector 26 electrically connected to the patch cord 24 and disposed on the adapter 25, wherein the electrical connector 22 is located in the receiving cavity 106 and extends toward the direction of the limiting hole 101, and the electrical connector 22 is used for being plugged into an electrical plug interface to electrically connect the adapting controller 21 to a first power controller or a second power controller. The electrical connector 22 may be not fixed in position and may change with the position of the electrical plug interface connected thereto, or may be fixed in position to limit the position of the first power adapter 31 or the second power adapter 32. Preferably, the adaptor controller 21 is a PCB board, and the connection assembly 23 is used for plugging connectors of other electronic devices. Preferably, the quantity and the Type of coupling assembling 23 can set up according to the demand, in the embodiment of the utility model provides an, coupling assembling 23 includes at least one in USB-Type-C interface seat, USB-Type-B interface seat, TF card interface seat, audio interface seat, the HDMI interface seat to the demand of adaptation different plugs. The shell body 11 is provided with a plurality of alignment holes which are communicated to the accommodating cavity 106 and are arranged opposite to the connecting assembly 23, and plugs of other connecting wires can penetrate through the alignment holes to be connected with the interface seats in an inserting mode.

The utility model discloses a housing member 10 includes shell main part 11, first lid 12 and second lid 13 homoenergetic can be dismantled and connect in shell main part 11, what the user can connect according to the change-over mechanism needs is first power adapter 31 or second power adapter 32 and selects first lid 12 or second lid 13 and shell main part 11 to dismantle and be connected, wherein, first spacing groove 121 can peg graft with first power adapter 31 adaptation, second spacing groove 133 can peg graft with second power adapter 32 adaptation. Thus, when the first power adapter 31 needs to be switched, the first power adapter 31 is first placed into the accommodating cavity 106 from the limiting hole 101, so that the electrical connector 22 is plugged into the electrical plug interface, and then the first cover 12 is covered at the limiting hole 101, at this time, the first power adapter 31 is fixed in position due to the limiting effect of the first limiting groove 121, so that the fixing of the housing member 10 to the first power adapter 31 and the switching of the switching mechanism to the first power adapter 31 are realized, when the switching of the second power adapter 32 needs to be realized, the second power adapter 32 is first placed into the accommodating cavity 106 from the limiting hole 101, so that the electrical connector 22 is plugged into the electrical plug interface, then the second cover 13 is covered at the limiting hole 101, at this time, the second power adapter 32 is fixed in position due to the limiting effect of the second limiting groove 133, so that the fixing of the housing member 10 to the second power adapter 32 and the switching of the switching mechanism to the second power adapter 32 are realized . The utility model discloses a housing member 10 has realized the stable connection of changeover mechanism and first power adapter 31 or second power adapter 32, has formed the docking station structure or the many interfaces battery charging outfit of integral type, avoids appearing the condition of contact failure because changeover mechanism rocks relatively with power adapter, has saved the space simultaneously, has improved the suitability and is convenient for mass production.

Referring to fig. 3 to fig. 5, the partition plate 16 is connected to an inner wall of the accommodating cavity 106 and divides the accommodating cavity 106 into an adapting cavity 107 and a power supply cavity 108, the adapting cavity 107 is used for placing the adapting mechanism, the power supply cavity 108 is used for placing the first power adapter 31 or the second power adapter 32, the limiting hole 101 is communicated with the power supply cavity 108, the partition plate 16 is provided with a communication hole 161, and the electrical connector 22 penetrates through the communication hole 161 and extends to the power supply cavity 108. The partition plate 16 limits the first power adapter 31 or the second power adapter 32, and preferably, the distance between the partition plate 16 and the bottom of the first limiting groove 121 is equal to the height of the first power adapter 31, and the distance between the partition plate 16 and the bottom of the second limiting groove 133 is equal to the height of the second power adapter 32.

Referring to fig. 3, the communication hole 161 is preferably adapted to the cross-sectional size of the electrical connector 22 to prevent the position of the electrical connector 22 from changing, and the communication hole 161 limits the position of the electrical connector 22.

Referring to fig. 3 to 5, the adaptor bracket 27 is connected to the cavity wall of the adaptor cavity 107, and plays a role in supporting and protecting the adaptor controller 21, so as to prevent the adaptor controller 21 from shaking or shifting.

Referring to fig. 1 to 2, the housing member 10 is provided with an avoidance hole 102 for avoiding the electrical plug 301, and the avoidance hole 102 enables the electrical plug 301 to extend out of the accommodating cavity 106 and to be electrically connected with an external electronic device. When the first power adapter 31 or the second power adapter 32 is mounted, the electric plug 301 is extended out of the housing member 10 through the escape hole 102 and is plugged into the power supply. Since the electrical plug interface is generally disposed opposite to the electrical plug 301, in the present embodiment, the avoiding hole 102 is opened in the first cover 12 and the second cover 13.

Referring to fig. 3, the first cover 12 and the second cover 13 may be made of a polymer material or a metal, and can bear a certain elastic deformation, the bottom of the first limiting groove 121 is provided with a first deformation hole 122 penetrating therethrough, and the bottom of the second limiting groove 133 is provided with a second deformation hole 134 penetrating therethrough. For guaranteeing first spacing groove 121 chucking first power adapter 31, first spacing groove 121 can with first power adapter 31 interference fit, first deformation hole 122 provides the deformation space for first lid 12 for first spacing groove 121 can tightly hoop the outer wall of first power adapter 31, carries out spacingly through frictional force to first power adapter 31. The second deformation hole 134 has a function similar to that of the first deformation hole 122, and is not described in detail herein.

Referring to fig. 3, the housing body 11 is provided with a positioning groove 109, the first protrusion 14 can be adapted and clamped with the positioning groove 109 when the first cover body 12 covers the limiting hole 101, and the second protrusion 15 can be adapted and clamped with the positioning groove 109 when the second cover body 13 covers the limiting hole 101. First lid 12 has realized being connected with dismantling of shell main part 11 through being connected of first arch 14 and constant head tank 109, and second lid 13 has realized being connected with dismantling of shell main part 11 through being connected of second arch 15 and constant head tank 109, and need not other structures, convenient and fast.

Referring to fig. 3, the first protrusion 14 and the second protrusion 15 preferably have guiding surfaces to facilitate self-locking, and in this embodiment, the first protrusion 14 and the second protrusion are both hemispherical.

Referring to fig. 3 and 5, since the length of the second power adapter 32 is smaller than that of the first power adapter 31, the second cover 13 includes a cover main body 131 having the same size as the first cover 12 and a limit plate 132 connected to the cover main body, the cover main body and the limit plate 132 together enclose to form a second limit groove 133, which is convenient for mass production of the first cover 12 and the second cover 13, the limit plate 132 is configured to reduce the size of the first limit groove 121 to the size of the second limit groove 133,

referring to fig. 3 to 5, in order to prevent the patch cord 24 from interfering with the user's use, in the embodiment, the housing main body 11 is provided with a clamping groove 104 adapted and clamped with the electrical adapter 26, so that when the electrical adapter 26 is clamped in the clamping groove 104, the electrical adapter 24 can be gathered, and the clamping groove 104 can be disposed at a position where the electrical adapter 26 is located after the patch cord 24 is wound on the surface of the housing main body 11. The clip groove 104 also serves to protect the clip groove 104 from damage.

Referring to fig. 3 to 5, the electrical adapter 26 is preferably connected to one side of the adapter 25. The patch cord 24 can thus be wrapped around the surface of the housing body 11, preventing the electrical adapter 26 from being snagged by the raised patch cord 24.

Referring to fig. 3 to 5, the housing body 11 further defines a fixing groove 105 for being engaged with the adaptor 25, and the engaging groove 104 is disposed at a bottom of the fixing groove 105. The fixing groove 105 plays a role in aligning the electrical adapter 26 with the clip groove 104, and prevents the electrical adapter 26 from being scratched toward the clip groove 104 during repeated alignment. Preferably, the adaptor 25 is made of rubber material, so that the adaptor 25 can be in interference fit with the fixing groove 105 by its own elasticity, so that the two can be clamped more tightly. For improving the zonulae occludens of electric adapter 26 and joint groove 104, casing component 10 is still including inserting the rubber spare 17 of locating joint groove 104, and the perforation of supplying power adapter 26 grafting is seted up to rubber spare 17, and rubber spare 17 has played the effect that improves connection friction power, prevents to connect not hard up.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An adapter box for connecting a first power adapter or a second power adapter, wherein the first power adapter or the second power adapter has an electrical plug interface and an electrical plug, and the cross section of the first power adapter is different from the cross section of the second power adapter in size, the adapter box comprising:

2. The adapter box of claim 1, wherein the housing member further comprises a partition plate connected to an inner wall of the receiving chamber, the partition plate dividing the receiving chamber into a switching chamber for accommodating the adapter mechanism and a power chamber for accommodating the first power adapter or the second power adapter, the partition plate being provided with a communication hole, and the electrical connector being inserted into the communication hole and extending to the power chamber.

3. The adapter box of claim 2 wherein said communication aperture is sized to fit the cross-section of said electrical connector.

4. The adapter box of claim 3, wherein the housing member defines an escape aperture for avoiding the electrical plug, the escape aperture enabling the electrical plug to extend out of the receiving cavity and electrically connect to the external electronic device.

5. The adapter box of claim 4, wherein the height of the power cavity is less than the height of the first power adapter or the second power adapter, and the avoidance hole is opened in the first cover or the second cover.

6. The adapter box of claim 1, wherein the bottom of the first retaining groove defines a first deformation hole therethrough, and the bottom of the second retaining groove defines a second deformation hole therethrough.

7. The adapter box of claim 1, wherein the housing body defines a positioning groove, the housing member further includes a first protrusion disposed on the first cover and adapted to the positioning groove, and a second protrusion disposed on the second cover and adapted to the positioning groove, the first cover is engaged with the positioning groove via the first protrusion, and the second cover is engaged with the positioning groove via the second protrusion.

8. The adapter box of claim 7, wherein the first protrusion and the second protrusion are each hemispherical.

9. The adapter box according to any one of claims 1 to 8, wherein the second cover body includes a cover main body and a limit plate connected to the cover main body, and the cover main body and the limit plate together enclose the second limit groove.

10. The patch panel of any one of claims 1 to 8, wherein said patch mechanism further comprises a patch cord electrically connected to said patch controller and an electrical patch plug electrically connected to said patch cord.

11. The adapter box of claim 10, wherein said housing body defines a snap-fit groove adapted to snap fit with said electrical adapter.

12. The adapter box of claim 11, wherein said adapter mechanism further comprises an adapter base connected to said patch cord, said electrical adapter being connected to one side of said adapter base.

13. The adapter box of claim 12, wherein the housing body further defines a fixing groove for engaging with the adapter, and the engaging groove is disposed at a bottom of the fixing groove.

14. The adapter box of claim 12 or 13, wherein said adapter is an adapter made of a rubber material.

15. The junction box according to any one of claims 2 to 8, wherein the connecting assembly includes at least one of a USB-Type-C interface seat, a USB-Type-B interface seat, a TF card interface seat, an audio interface seat, and an HDMI interface seat, and the housing main body is opened with a plurality of alignment holes communicating with the junction cavity and disposed opposite to the connecting assembly.