Wall socket conversion seat

Abstract

The utility model discloses a wall socket adapter, which comprises a shell, a plug assembly, a supporting piece and a control piece, and is characterized in that the plug assembly comprises a plug exposed out of one side wall of the shell; the supporting piece and the plug are arranged at an interval and can stretch out or retract relative to the side wall where the plug is located. The control piece is located on the other side wall of the shell, connected with the supporting piece and used for driving the supporting piece to stretch out of or retract into the shell and locking the supporting piece so that the supporting piece can be fixed relative to the shell. Thus, the supporting length of the supporting piece can be flexibly adjusted according to the actual use scene, it is ensured that the wall socket conversion base can be stably inserted into a socket on a wall or other places, the situation that the wall socket cannot be used due to the thickness difference of the wall socket or the special installation environment is effectively avoided, and the application range of the wall socket conversion base is greatly widened; and the linkage design of the control piece and the supporting piece enables a user to operate very conveniently, and the user only needs to apply external force to the control piece with one hand, so that the stretching, retracting and locking actions of the supporting piece can be easily realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to plug -in equipment technical field especially relates to a wall plug conversion seat. BACKGROUND

[0002] Wall plug conversion seat is a kind of device for expanding socket interface.It mainly functions can be expanded the interface quantity of a wall socket, so that multiple appliance plugs can be inserted simultaneously, thereby solve the problem that multiple appliances cannot be powered simultaneously due to limited socket interface quantity.

[0003] In order to guarantee the fixed stability when using, the wall plug conversion seat of the prior art is supported by setting support structure to prevent the wall plug conversion seat from toppling under the action of large gravity. However, the support length of the support structure in the related art is fixed and cannot be flexibly adjusted according to actual use requirements or different installation environments, for example, when facing wall sockets of different thicknesses or requiring special angle support, stable support effect cannot be provided, thereby limiting the application range and use convenience of the wall plug conversion seat. SUMMARY

[0004] The main purpose of the utility model is to provide a wall plug conversion seat, which aims to solve the technical problem that the support structure of the existing wall plug conversion seat cannot be flexibly adjusted according to actual use requirements or different installation environments.

[0005] To achieve the above-mentioned purpose, the utility model provides a wall plug conversion seat, which comprises:

[0006] A shell;

[0007] A plug assembly comprising a plug exposed to one side wall of the shell;

[0008] A support member arranged in a spaced manner with the plug and capable of extending or retracting relative to the side wall where the plug is located;

[0009] A control member located on the other side wall of the shell and connected with the support member, for driving the support member to extend or retract into the shell, and locking the support member to fix it relative to the shell.

[0010] In some embodiments, the shell comprises first and second side walls arranged adjacent to each other, the plug is at least partially exposed to the first side wall, the shell is provided with a sliding channel arranged along the thickness direction of the first side wall, the first side wall is provided with a first through hole in communication with the sliding channel, and the second side wall is provided with a second through hole in communication with the sliding channel;

[0011] The support member is slidingly installed in the sliding channel, and the control member is connected with the support member through the second through hole.

[0012] In some embodiments, a locking structure is arranged between the support member and the control member, which includes a threaded segment and a threaded hole arranged on the support member and the control member respectively, and the threaded segment and the threaded hole are connected with each other to connect the support member and the control member.

[0013] In some embodiments, the control member includes a locking portion and a driving portion connected with each other, the locking portion is inserted into the second through hole, and the locking portion is at least partially formed with the threaded segment, the driving portion is at least partially exposed outside the second side wall, and the threaded hole is arranged on the side of the support member opposite to the second through hole.

[0014] In some embodiments, the outer periphery of the driving portion is provided with an anti-skid part.

[0015] In some embodiments, the outer periphery of the locking portion is provided with an anti-falling member, which is arranged between the threaded segment and the driving portion and is used to abut against the inner edge of the second through hole.

[0016] In some embodiments, the outer periphery of the locking portion is further provided with a first anti-skid member, which is arranged between the anti-falling member and the threaded segment and is used to abut against the side of the support member facing the second through hole.

[0017] In some embodiments, the inner wall of the second side wall is provided with a first guide structure extending along the sliding channel, and the support member is correspondingly provided with a second guide structure, one of the first guide structure and the second guide structure is a guide groove, and the other is a guide protrusion slidingly matched with the guide groove.

[0018] In some embodiments, the first guide structure is a guide protrusion, and the guide protrusion is provided with two guide protrusions symmetrically arranged on both sides of the second through hole.

[0019] The second guide structure is a guide groove, and the guide groove is correspondingly provided with two guide grooves, and the guide protrusion and the guide groove are matched one by one.

[0020] In some embodiments, the end of the support member protruding out of the shell is provided with a second anti-skid member.

[0021] The wall plug conversion seat provided by the application is characterized in that: the support part is arranged at a distance from the plug, and can be extended or retracted relative to the side wall where the plug is located; the control part is arranged on the other side wall of the shell and connected with the support part, and is used to drive the support part to extend or retract in the shell, and lock the support part to fix the support part relative to the shell; thus, the support length of the support part can be flexibly adjusted according to the actual use scene, the wall plug conversion seat can be stably plugged on the socket in a place such as a wall, and the situation that the wall plug conversion seat cannot be used due to the thickness difference of the wall socket or special installation environment can be effectively avoided, the application range of the wall plug conversion seat is greatly widened, and the linkage design of the control part and the support part makes the user very convenient during operation, and the user only needs to apply external force to the control part with one hand to easily realize the extension, retraction and locking actions of the support part. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the support part retracted into the shell in an embodiment of the application;

[0023] Figure 2 It is a schematic view of the support part extended out of the shell in an embodiment of the application;

[0024] Figure 3 It is a disassembled schematic view of the wall plug conversion seat in an embodiment of the application;

[0025] Figure 4 It is an installation schematic view of the control part and the support part in an embodiment of the application;

[0026] Figure 5 It is a structural schematic view of the wall plug conversion seat in an embodiment of the application;

[0027] Figure 6 It is Figure 5 the sectional view of A-A in the embodiment of the application;

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] Reference Name Reference Name 1000 Wall plug adapter 100 Housing 200 Plug assembly 210 Plug 300 Support 400 Control 110 First side wall 120 Second side wall 111 First through hole 121 Second through hole 510 Threaded section 520 Threaded hole 410 Locking portion 420 Driving portion 421 Anti-slip portion 411 Anti-coming-off member 412 First anti-slip member 122 Guide protrusion 310 Guide groove 320 Second anti-slip member

[0030] The realization, functional features and advantages of the application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0031] The embodiments of the application will be described clearly and completely with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments of the application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0033] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or a middle element can be present at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or a middle element can be present at the same time.

[0034] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0035] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a wall plug conversion seat 1000, which comprises a shell 100, a plug assembly 200, a supporting piece 300 and a control piece 400; the plug assembly 200 comprises a plug 210 exposed on one side wall of the shell 100; the supporting piece 300 is arranged in a spaced manner with the plug 210, and can be extended or retracted relative to the side wall where the plug 210 is located; the control piece 400 is located on the other side wall of the shell 100, and is connected with the supporting piece 300, and is used for driving the supporting piece 300 to extend or retract into the shell 100, and locking the supporting piece 300 to fix the supporting piece 300 relative to the shell 100.

[0036] Among them, the control piece 400 is connected with the supporting piece 300, which can be connected by adopting a screw nut structure, a gear and rack structure or a connecting rod structure, etc., when a user operates the control piece 400, it will exert force on the supporting piece 300, to drive the supporting piece 300 to extend or retract the side wall where the plug 210 is located.

[0037] The control piece 400 also has the function of locking the supporting piece 300, so that it is fixed relative to the shell 100, so that the supporting piece 300 cannot be moved at will, so as to ensure that the supporting piece 300 can stably support the wall plug conversion seat 1000 in the use process.

[0038] In use, the length of the support 300 can be adjusted by the control 400 according to the thickness of the wall socket, so that the wall socket adapter 1000 can be stably plugged into the wall socket or the like, effectively avoiding the situation that the wall socket adapter 1000 cannot be used due to the difference in thickness of the wall socket or special installation environment. For example, when used on a thinner wall socket, the support 300 can be extended to a shorter length to closely fit the wall and provide stable support; when used on a thicker wall socket, the support 300 can be extended to a longer distance to ensure that the wall socket adapter 1000 can maintain balance and will not be tilted due to gravity.

[0039] The adjustable support 300 in this embodiment greatly expands the application range of the wall socket adapter 1000. Whether in a home, office or other various places, regardless of the type and location of the wall socket, the wall socket adapter 1000 can be used stably by simple adjustment. At the same time, the convenience of use is also improved, and the user can adjust the support 300 at any time according to actual needs, without worrying about the wall socket adapter 1000 cannot be used stably due to the difference in thickness of the wall socket.

[0040] Further, the linkage design of the control 400 and the support 300 makes the operation process very convenient for the user. The user only needs to apply an external force to the control 400 with one hand to easily realize the extension, retraction and locking actions of the support 300.

[0041] Please refer to Figure 2 and Figure 3 In some embodiments, the housing 100 includes a first side wall 110 and a second side wall 120 arranged adjacent to each other, the plug 210 is at least partially exposed to the first side wall 110, and the housing 100 is provided with a sliding channel arranged along the thickness direction of the first side wall 110, the first side wall 110 is provided with a first through hole 111 in communication with the sliding channel, and the second side wall 120 is provided with a second through hole 121 in communication with the sliding channel.

[0042] The support 300 is slidingly installed in the sliding channel, and the control 400 is connected with the support 300 by penetrating the second through hole 121.

[0043] In this embodiment, the support 300 is slidingly installed in the sliding channel arranged along the thickness direction of the first side wall 110. Due to the restriction and guiding effect of the sliding channel on the support 300, when driven by the external force from the control 400, the support 300 can only slide linearly along the direction of the sliding channel, thereby realizing the action of extending or retracting into the housing 100.

[0044] The control member 400 is connected with the support member 300 through the second through hole 121 of the second side wall 120, and the rotation or linear motion of the control member 400 is converted into the sliding of the support member 300 in the sliding channel through the connection of the connection structure (such as a screw nut structure, a gear and rack structure, etc.), so as to realize accurate position control.

[0045] In the embodiment, the sliding channel is arranged in the shell 100, and the support member 300 is integrated in the shell 100, so that the support member 300 can be completely accommodated in the shell 100 when not in use, without occupying external space, thereby ensuring the compactness of the wall plug adapter 1000 and facilitating the use of the wall plug adapter 1000 in various limited space socket environments.

[0046] Please refer to Figure 3 and Figure 4 In some embodiments, a locking structure is arranged between the support member 300 and the control member 400, and the locking structure includes a threaded segment 510 and a threaded hole 520 arranged on the support member 300 and the control member 400 respectively, and the threaded segment 510 and the threaded hole 520 are connected to support the support member 300 and the control member 400.

[0047] When it is necessary to adjust the extension or retraction of the support member 300 into the shell 100, due to the self-locking characteristics of the threaded segment 510 and the threaded hole 520, a large friction and axial force is generated, and the linear movement of the control member 400 can drive the support member 300 to move linearly along the sliding channel, so as to realize the adjustment of the position.

[0048] When the support member 300 moves to the desired position, the threaded segment 510 and the threaded hole 520 are locked by rotating the control member 400, so as to prevent the relative displacement between the support member 300 and the control member 400, and the support member 300 is firmly fixed at the position, thereby ensuring that the support member 300 will not move randomly due to external force and the like during the use of the wall plug adapter 1000, and providing stable support for the entire device.

[0049] In the embodiment, the self-locking characteristics of the threaded connection provide strong stability for the locking structure, can withstand certain external interference, ensure that the support member 300 always remains in a fixed state during long-term use, so that the wall plug adapter 1000 can be stably placed on the socket, and is not prone to instability such as tilting. Compared with some complex locking and connection mechanisms, the locking structure composed of the threaded segment 510 and the threaded hole 520 is relatively simple and easy to manufacture and process, while ensuring the function, can reduce the production cost.

[0050] In some embodiments, the control member 400 comprises a locking portion 410 and a driving portion 420 connected together, the locking portion 410 is inserted into the second through hole 121, and the locking portion 410 is formed with a threaded segment 510 at least in part, and the driving portion 420 is exposed at least in part outside the second side wall 120, and the threaded hole 520 is arranged on the side of the support member 300 opposite to the second through hole 121.

[0051] In some embodiments, the locking portion 410 is inserted into the second through hole 121 of the second side wall 120 of the shell 100, and the locking portion 410 is formed with a threaded segment 510 at least in part, which is used to cooperate with the threaded hole 520 on the support member 300 to realize the locking and linkage adjustment of the support member 300 and the control member 400.

[0052] The driving portion 420 is exposed at least in part outside the second side wall 120 of the shell 100 to facilitate the user to operate. The user can directly drive the whole control member 400 to move by exerting external force, such as rotating, pushing and pulling, etc., on the driving portion 420 exposed outside the shell 100, thereby driving the support member 300 connected thereto to move in the sliding channel in the shell 100.

[0053] Preferably, the threaded hole 520 penetrates from one side to the other side of the support member 300. The threaded hole 520 penetrating provides a more sufficient contact area and a longer threaded cooperation length for the connection between the control member 400 and the support member 300. When the two are connected through the threaded connection, the longer threaded cooperation length can bear greater axial tension and torque, further enhancing the firmness of the connection between the two, reducing the possibility of loosening due to external force during use, and making the linkage between the support member 300 and the control member 400 more reliable and stable.

[0054] In some embodiments, the outer periphery of the driving portion 420 is provided with an anti-slip portion 421.

[0055] The anti-slip portion 421 can be presented in various forms, such as wrapping a rubber sleeve with texture on the surface around the outer periphery of the driving portion 420, the texture can be horizontal lines, vertical lines, diamond lines, etc., which can increase the surface friction to play an anti-slip role; or it can be directly processed on the surface of the driving portion 420 through sanding, etching, etc. to form a rough anti-slip structure.

[0056] When the user needs to operate the driving portion 420 of the control member 400 to adjust the extension or retraction of the support member 300 and perform locking operation, whether through rotation or pushing and pulling, etc., the anti-slip portion 421 can effectively increase the friction between the finger and the driving portion 420, and the finger will not easily slip on the surface of the driving portion 420, so that the operation is more stable and accurate, and the situation of misoperation or failure to adjust the position of the support member 300 smoothly due to slipping is avoided.

[0057] In some embodiments, the outer periphery of the locking portion 410 is sleeved with an anti-disengagement piece 411, which is arranged between the threaded segment 510 and the driving portion 420, and is used to abut against the inner side edge of the second through hole 121.

[0058] In a normal use state, the anti-disengagement piece 411 forms an abutting relationship with the inner side edge of the second through hole 121. Due to the design of the outer diameter size of the anti-disengagement piece 411, it can be clamped at the second through hole 121. Even if affected by external force, for example, the wall plug adapter 1000 may be collided or pulled during use, or the control member 400 is operated improperly due to improper force, etc., the anti-disengagement piece 411 can prevent the locking portion 410 from disengaging from the second through hole 121, thereby ensuring that the control member 400 is always stably installed on the shell 100, maintaining the normal connection and linkage relationship between the control member 400 and the support member 300, so that the support member 300 can normally perform the extension, retraction and locking operations, and maintain the stable support state of the wall plug adapter 1000.

[0059] In some embodiments, the outer periphery of the locking portion 410 is also sleeved with a first anti-slip piece 412, which is arranged between the anti-disengagement piece 411 and the threaded segment 510, and is used to abut against the side of the support member 300 facing the second through hole 121.

[0060] In this embodiment, through the abutment of the first anti-slip piece 412 and the support member 300, the small gap between the control member 400 and the support member 300 is filled, making the connection between the two more closely. This close connection not only helps to improve the overall stability of the structure, but also makes the force transmission more smooth and accurate when adjusting the extension or retraction of the support member 300, making the user's operation of the control member 400 to drive the support member 300 more convenient, reducing the phenomenon of jamming and looseness due to insufficient connection, and improving the user's operation experience.

[0061] When the control member 400 is connected to the threaded hole 520 on the support member 300 through the threaded segment 510, the first anti-slip piece 412 abuts against the support member 300, increasing the frictional resistance between the two, making it more difficult for the support member 300 to displace relative to the control member 400, and assisting the threaded connection to better fix the support member 300, ensuring that the support member 300 can be stably maintained at the adjusted position, maintaining the stable support state of the wall plug adapter 1000.

[0062] In some embodiments, the inner wall of the second side wall 120 is provided with a first guide structure extending along the sliding channel, and the support 300 is correspondingly provided with a second guide structure, one of the first guide structure and the second guide structure is a guide groove 310, and the other is a guide protrusion 122 which is in sliding cooperation with the guide groove 310.

[0063] When the user drives the support 300 to extend or retract through the control member 400, the cooperation between the first guide structure and the second guide structure can ensure that the support 300 moves strictly in a predetermined direction, that is, linearly along the sliding channel. Specifically, the guide protrusion 122 will slide in the guide groove 310, and the shape and size cooperation of the two limits the freedom of the support 300 in other directions, so that the support 300 will not deviate or skew, and at the same time, unnecessary friction and collision between the support 300 and other parts of the inner wall of the shell 100 during sliding is reduced, the degree of wear of the components is reduced, so that the support 300 can accurately reach the position expected by the user and achieve stable support effect.

[0064] In this embodiment, the first guide structure and the second guide structure are provided, so that the stability of the support 300 during sliding is greatly improved. Whether in the process of daily plugging and unplugging, or in the complex situation that the wall plug adapter 1000 is impacted or vibrated by external force, the support 300 can stably slide along the predetermined track, so that it is always in the correct position, provides reliable support for the wall plug adapter 1000, and effectively prevents problems such as tilting and poor contact caused by the change of the position of the support 300.

[0065] It should be understood that the guide groove 310 can be provided on the inner wall of the second side wall 120, and the guide protrusion 122 is correspondingly provided on the support 300; the guide groove 310 can also be provided on the support 300, and the guide protrusion 122 is correspondingly provided on the inner wall of the second side wall 120, which can be selected according to actual conditions, and the embodiments of the present application are not limited herein.

[0066] Please refer to Figures 3 to 6 In some embodiments, the first guide structure is the guide protrusion 122, and the guide protrusion 122 is provided with two guide protrusions which are symmetrically arranged on both sides of the second through hole 121.

[0067] The second guide structure is the guide groove 310, and the guide groove 310 is correspondingly provided with two guide grooves, and the guide protrusion 122 and the guide groove 310 are one-to-one matched.

[0068] When the user operates the control member 400 to drive the support member 300 to extend or retract, the two sets of symmetrically distributed guide ribs 122 and the guide grooves 310 work together. Since the guide ribs 122 are embedded in the corresponding guide grooves 310, during movement, the guide ribs 122 guide the guide grooves 310 and the entire support member 300 to slide linearly in the predetermined direction.

[0069] In this embodiment, the two guide ribs 122 are symmetrically arranged to simultaneously constrain the support member 300 from both sides, so that the force on the support member 300 is more uniform and balanced, and the support member 300 can move more smoothly and accurately along the sliding channel, effectively avoiding unstable conditions such as tilting and deviation caused by uneven force on one side during sliding, ensuring that the support member 300 can accurately reach the desired position and achieve reliable support function.

[0070] Of course, the number of guide grooves 310 and guide ribs 122 can also be three or more, which is not limited in this embodiment.

[0071] In some embodiments, the end of the support member 300 extending out of the housing 100 is provided with a second anti-skid member 320.

[0072] The second anti-skid member 320 can take various forms, such as a rubber pad with high friction coefficient attached to the end of the support member 300, which has rich texture on the surface to increase the friction with the surface of the contacted object; or it can be a frosted or convex point anti-skid structure machined on the end of the support member 300, the purpose of which is to enhance the anti-skid performance between the end of the support member 300 and the external support surface.

[0073] When the wall plug adapter 1000 is inserted into the socket and supported by the support member 300, the second anti-skid member 320 will be in close contact with the support surface (such as the wall surface, the plane around the socket, etc.). Since the second anti-skid member 320 has good anti-skid properties, it can effectively increase the friction between the support member 300 and the support surface, so that the support member 300 is not easy to slide on the support surface when subjected to external forces such as the weight of the wall plug adapter 1000 itself, the tension of the external power cord, etc., thereby providing more stable and reliable support for the wall plug adapter 1000, avoiding tilting and other situations caused by unstable support, and ensuring the safety of electrical equipment.

[0074] The above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not a limitation on the embodiments of the utility model. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, all the embodiments cannot be exhausted. Any obvious changes or variations derived from the technical scheme of the utility model still fall within the protection scope of the utility model.

Claims

1. A wall socket adapter, characterized in that, include: case; A plug assembly, the plug assembly including a plug exposed on one sidewall of the housing; A support member is provided at a distance from the plug and can extend or retract relative to the side wall where the plug is located; A control element, located on the other side wall of the housing and connected to the support element, is used to drive the support element to extend or retract into the housing, and to lock the support element to fix it relative to the housing.

2. The wall socket adapter according to claim 1, characterized in that, The housing includes a first sidewall and a second sidewall arranged adjacent to each other. The plug is at least partially exposed in the first sidewall. The housing is provided with a sliding channel arranged along the thickness direction of the first sidewall. The first sidewall is provided with a first through hole communicating with the sliding channel. The second sidewall is provided with a second through hole communicating with the sliding channel. The support member is slidably installed in the sliding channel, and the control member passes through the second through hole and is connected to the support member.

3. The wall socket adapter according to claim 2, characterized in that, A locking structure is provided between the support member and the control member. The locking structure includes a threaded segment and a threaded hole respectively provided on the support member and the control member. The threaded segment and the threaded hole cooperate to connect the support member and the control member.

4. The wall socket adapter according to claim 3, characterized in that, The control component includes a locking part and a driving part connected to each other. The locking part is inserted into the second through hole and at least partially forms the threaded section. The driving part is at least partially exposed outside the second side wall. The threaded hole is provided on the side of the support component facing the second through hole.

5. The wall socket adapter according to claim 4, characterized in that, The outer periphery of the drive unit is provided with anti-slip parts.

6. The wall socket adapter according to claim 4, characterized in that, An anti-disengagement component is sleeved on the outer periphery of the locking part. The anti-disengagement component is located between the threaded section and the driving part and is used to abut against the inner edge of the second through hole.

7. The wall socket adapter according to claim 6, characterized in that, The outer periphery of the locking part is also fitted with a first anti-slip member, which is located between the anti-disengagement member and the threaded section, and is used to abut against the side of the support member facing the second through hole.

8. The wall socket adapter according to any one of claims 2 to 7, characterized in that, The inner wall of the second sidewall is provided with a first guide structure extending along the sliding channel, and the support member is provided with a corresponding second guide structure. One of the first guide structure and the second guide structure is a guide groove, and the other is a guide rib that slides with the guide groove.

9. The wall socket adapter according to claim 8, characterized in that, The first guide structure is a guide rib, and there are two guide ribs, which are symmetrically arranged on both sides of the second through hole; The second guide structure is a guide groove, and two guide grooves are provided accordingly. The guide ribs are matched with the guide grooves one by one.

10. The wall socket adapter according to any one of claims 1 to 7, characterized in that, The end of the support extending out of the housing is provided with a second anti-slip element.

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