Electrical equipment and mounting assembly

Abstract

The invention discloses an electrical device and an installation assembly, and relates to the technical field of electrical equipment.The electrical device comprises a body part and a tension counteracting piece, the body part is provided with an embedded part and a frame part surrounding the embedded part, the embedded part is inserted into an installation space, and the frame part is used for being attached to an installation face of the installation space; the fastener penetrates through the mounting hole of the body part and is connected with the fixing part of the mounting space so as to fix the body part; the tension counteracting piece is arranged in a cavity formed by the mounting space and the body part, and the tension counteracting piece is configured to generate acting force opposite to the direction of the locking tension through abutting against the body part or elastic deformation in the fastening piece fixing process so as to counteract part of the locking tension. According to the technical scheme, the thin edge design and the structural strength of the body part can be considered, and the problem of deformation or cracking of the body part in the installation process is solved.

Description

Technical Field

[0001] This invention relates to the field of electrical connection technology, and in particular to an electrical device and installation assembly. Background Technology

[0002] In related technologies, electrical equipment such as sockets are typically designed with thin-edged panels to ensure a close fit between the socket and the mounting surface, improving aesthetics and reducing hard-to-clean areas. However, when the thin-edged structure is fixed to the mounting surface with fasteners, the presence of obstacles such as hard wires within the installation space requires significant tightening force to ensure the edges remain flush. This can cause the body to bend and deform inwards due to excessive force on one side, even leading to cracks in the frame, severely impacting the product's structural stability and lifespan. While related technologies have attempted to address this issue by increasing panel thickness or using reinforcing ribs, this sacrifices the original purpose of the thin-edged design or increases costs due to structural complexity, failing to achieve an effective balance between aesthetic appeal and structural resistance to deformation. Summary of the Invention

[0003] The main objective of this invention is to provide an electrical device that improves frame deformation during installation and enhances product quality.

[0004] To achieve the above objectives, the present invention provides an electrical device comprising: The body portion has an insert portion and a frame portion surrounding the insert portion. The insert portion is inserted into the mounting space, and the frame portion is used to conform to the mounting surface of the mounting space. The insert portion has a mounting hole for an external fastener to pass through and connect with the fixing portion to fix the body portion. A tension counteractor is disposed in the cavity formed by the mounting space and the body portion. During the fastener fixing process, the tension counteractor generates a force opposite to the direction of the locking tension by abutting against the body portion or by elastic deformation, so as to at least counteract part of the locking tension.

[0005] In one embodiment, the tension counteractor is disposed on the cavity wall of the mounting space, and the tension counteractor is configured to abut against the embedded portion of the body when the fastener is fixed, so as to generate a supporting force opposite to the direction of the locking tension.

[0006] In one embodiment, the number of tension-reducing components is two, and the two tension-reducing components are respectively snapped and fixed to the cavity wall of the installation space by a snap-fit ​​structure.

[0007] In one embodiment, the two tension-reducing members are located on opposite sides of the mounting space cavity wall and adjacent to the fixing portion.

[0008] In an embodiment, each of the tension counterforce members comprises a support beam body, a clamping jaw arranged on the support beam body, and a clamping jaw adjusting member penetrating the support beam body and connected with the clamping jaw, the clamping jaw being driven to extend and abut against the cavity wall of the mounting space by screwing the clamping jaw adjusting member.

[0009] In an embodiment, the support beam body comprises a cross beam portion and longitudinal beam portions respectively connected to both ends of the cross beam portion, the lower end of each of the longitudinal beam portions extending away from the inner side of the cavity wall with a supporting wall, the supporting wall and the lower portion of the longitudinal beam portion forming a notch cavity opening towards the cavity wall; the clamping jaw adjusting member comprises a clamping jaw bolt and a clamping jaw nut, the longitudinal beam portion being provided with a through hole for the clamping jaw bolt to penetrate and threadedly connected with the clamping jaw nut, the clamping jaw nut limiting the clamping jaw in the notch cavity; the supporting wall limits the circumferential rotation of the clamping jaw nut; wherein the clamping jaw nut abuts against the clamping jaw to make the clamping jaw extend from the opening of the notch cavity by screwing the clamping jaw bolt.

[0010] In an embodiment, the cross-sectional area of the longitudinal beam portion perpendicular to its own length direction is greater than the cross-sectional area of the cross beam portion perpendicular to its own length direction.

[0011] In an embodiment, the embedding portion of the body portion is provided with a connecting site, the longitudinal beam portion is provided with a mounting portion corresponding to the connecting site, and the connecting site is detachably connected with the mounting portion through a mounting member.

[0012] In an embodiment, the embedding portion is rectangular and provided with four connecting sites, and one of the mounting portions corresponds to the connecting sites.

[0013] In an embodiment, the upper surface of the support beam body abuts against the lower surface of the embedding portion, so that the frame portion is attached to the mounting surface of the mounting space.

[0014] In an embodiment, a filling layer is arranged between the support beam body and the cavity wall of the mounting space, the filling layer being a solid adhesive or an adhesive member pre-fixed to the support beam body.

[0015] In an embodiment, the tension counterforce member is an elastic element arranged between the embedding portion and the fixed portion, and the tension counterforce member is configured to generate a reverse elastic force in the axial direction of the locking tension by compression deformation during the fastening process of the fastening member, so as to at least offset part of the locking tension.

[0016] In an embodiment, the elastic element is selected from at least one of a metal elastic washer, a metal spring, a rubber elastic washer, or a silica gel elastic washer.

[0017] In an embodiment, the number of elastic elements is at least one, and the elastic elements are coaxially arranged with the fastener.

[0018] In an embodiment, the embedding portion of the body portion is provided with an embedding groove opening towards the cavity wall of the mounting space, and a reinforcing beam is arranged in the embedding groove, and the reinforcing beam is used to enhance the structural strength of the body portion on the side of the fixing portion.

[0019] In an embodiment, the reinforcing beam is fixed or integrally injection molded with the embedding groove.

[0020] In an embodiment, the reinforcing beam comprises a middle connecting portion and reinforcing portions located at both ends of the middle connecting portion, and the cross-sectional area of the reinforcing portions is greater than the cross-sectional area of the middle connecting portion.

[0021] In an embodiment, the surface of the reinforcing beam towards the fixing portion is provided with a positioning groove, and the elastic element is arranged in the positioning groove, and the positioning groove is used to limit the radial displacement of the elastic element.

[0022] In an embodiment, the body portion is a switch and / or a socket.

[0023] The application also provides a mounting assembly for mounting the electrical equipment described above, and the mounting assembly comprises a tool main body, the tool main body is provided with a placing portion and a holding portion, the placing portion is used to detachably connect the tensile force counteracting member to the tool main body, and the holding portion is used to detachably connect with the fixing portion to place the tensile force counteracting member in the mounting space. Through the mounting assembly, the tensile force counteracting member can be more quickly and conveniently assembled in the mounting space, so as to ensure the cooperation between the tensile force counteracting member and the body portion.

[0024] The technical scheme of the application places the tensile force counteracting member in the cavity formed by the body portion and the mounting space, and the tensile force counteracting member generates a counteracting force opposite to the locking tensile force through abutting or elastic deformation during the fixing of the fastener, so as to directly weaken the net tensile force acting on the body portion, to inhibit the bending deformation of the body portion caused by the locking tensile force, to inhibit the bending deformation trend from the mechanical aspect, to avoid the cracking of the frame portion caused by excessive stress, to inhibit the deformation, to improve the structural stability, to improve the product structural strength and the installation reliability. Compared with the solution of material upgrading or multi-component reinforcement in the related art, the tensile force counteracting member can be realized by simple rigid support or elastic element (such as a support block, a spring, etc.), the structure is simple, complex machining process is not needed, the structure is simplified, the production cost is controlled, and the product assembly efficiency is maintained. In this way, the thin side design and the structural strength are considered. BRIEF DESCRIPTION OF DRAWINGS

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 A schematic diagram of an embodiment of the electrical equipment installed in a wall according to the present invention; Figure 2 An exploded view of one embodiment of the main body and inner box; Figure 3 This is a cross-sectional structural diagram of an embodiment in which the chuck in the main body is not engaged with the cavity wall; Figure 4 A cross-sectional structural diagram of an embodiment of a claw engaging the cavity wall in the main body; Figure 5 An exploded structural diagram of an embodiment of the main body and the tension-reducing component; Figure 6 Schematic diagrams of an embodiment before (I) and after (II) installation of the mounting components and tension counteractor; Figure 7 for Figure 6 A schematic diagram of an embodiment of the installation of the installation component (II) into the installation space after installation; Figure 8 This is an exploded view of another embodiment of the main body and inner box; Figure 9 An exploded structural diagram of one embodiment of the main body and reinforcing beam; Figure 10 This is a schematic diagram of the structure of each elastic element (A, B, C, D).

[0027] Explanation of icon numbers: 10. Inner box; 10a. Cavity wall; 10b. Installation space; 11. Fixing part; 20. Body part; 21. Embedded part; 211. Connecting position; 212. Insertion groove; 213. Mounting hole; 22. Frame part; 23. Decorative panel; 30. Fasteners; 40. Tension counteracting component; 40a. Snap-fit ​​structure; 41a, Support beam body; 1a1, Horizontal beam section; 1a2, Longitudinal beam section; 1a21, Support wall; 1a22, Notch; 1a23, Mounting section; 41b, Clamping claw; 41c, Clamping claw adjusting component; 1c1, Clamping claw bolt; 1c2, Clamping claw nut; 41d, Fill layer; 42. elastic element; 50. reinforcing beam; 51. intermediate connection; 52. reinforcing portion; 60. mounting assembly; 61. tool body; 62. seating portion; 63. holding portion; V. mounting surface.

[0028] The objectives, functional characteristics and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0031] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, 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, “and / or” or “and / or” appearing throughout the text means that the three parallel solutions are included, for example, “A and / or B” includes A solution, or B solution, or A and B solutions are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the 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, nor within the scope of protection claimed by the present application.

[0032] In the related art, an electrical device includes, for example, a socket, a junction box, a terminal, and the like. For example, a socket is taken as an example. In order to realize the fit installation of the socket and a mounting surface, improve the aesthetics, and reduce the sanitary dead angle, a socket panel is usually designed as a thin edge structure, and the edge portion can be closely fitted to the mounting surface. However, when the body portion of the thin edge structure is fixed to the mounting surface by a fastener, due to the existence of obstacles such as hard wires inside the installation space, a large locking tension needs to be applied to ensure that the edge portion is fitted to the mounting surface. At this time, the body portion is easy to bend and deform inwardly due to the excessive force on one side, and even causes the frame portion to crack, which seriously affects the product structure stability and service life. Although the related art attempts to solve this problem by increasing the thickness of the panel or using a reinforcing rib, this will sacrifice the original intention of the thin edge design, or cause the cost to rise due to the complication of the structure, and cannot effectively balance between the "thin edge aesthetics" and "structure deformation resistance".

[0033] Therefore, the present application provides an electrical device, which aims to solve the above problems.

[0034] Please refer to Figure 1 In an embodiment of the present application, the electrical device includes a body portion 20 and a tension counteracting member 40.

[0035] The body portion 20 is an electrical device installed on a mounting surface V, used to realize the on-off control of an electrical circuit or the power supply interface of an electrical appliance, and provides a safe and convenient power access or control interface for users by connecting with the internal circuit of a wall.

[0036] In the embodiment, the body portion 20 is a switch and / or a socket, that is, the body portion 20 is a pure jack socket, a pure switch, or a switch socket; wherein the pure jack socket only has a live jack, the pure switch only has a mechanical button or a touch button, and the switch socket has both a live jack and a mechanical button or a touch button.

[0037] The mounting surface V is the installation scene of the body portion 20, such as a wall surface, a table surface, a surface of furniture, and the like. Specifically, the installation space 10b is usually an inner box 10 pre-set in the installation scene, which is used to accommodate the body portion 20; but in some installation scenes, there are also "no bottom box installation" cases, such as directly digging a groove in the wall surface, fixing the socket like hollowing in the wall surface by a repair tool or an expansion screw, and the like.

[0038] In the embodiment, the mounting space 10b is constituted by the inner box 10; in other schemes, the mounting space 10b is formed by the mounting position where the mounting surface is located. The inner box 10 is embedded in the wall body (of course, it can also be a desktop, cabinet body, etc.), used for accommodating circuit wiring and providing a mounting base, and a fixing portion 11 (such as a stud or boss) for fixing the fastener 30 (such as a screw) is arranged in the inner box 10; the body portion 20 is used as a component directly operated by a user, and has an “embedded portion 21” (used for accommodating a circuit module and a wiring terminal) inserted into the inner box 10 and a “frame portion 22” (designed as a thin structure, used for being attached to the mounting surface V to improve the aesthetics and reduce dust accumulation) surrounding the outer periphery of the embedded portion 21; the fastener 30 is connected with the fixing portion 11 of the inner box 10 through the mounting hole 213 of the embedded portion 21 of the body portion 20, and the body portion 20 is locked and fixed to the inner box 10, so that the frame portion 22 is tightly attached to the mounting surface V.

[0039] Although the above structure realizes the attachment of the frame portion 22 to the mounting surface V, the following problems exist in the actual installation process: the inner box 10 is blocked by the pre-laid hard wire (such as a power supply wire) in the inner box 10, so that the embedded portion 21 of the body portion 20 cannot be completely attached to the bottom of the inner box 10, and the locking tension of the fastener 30 needs to be increased to make the frame portion 22 press-fit the mounting surface V. At this time, the locking tension will cause the body portion 20 to bend and deform inwardly (toward the inner box 10), and especially the frame portion 22 is prone to stress concentration due to the thin structure, which may cause cracking or permanent deformation, affecting the product life and safety.

[0040] Referring to Figures 2 to 5 To solve the above defects, the present application adds a tension counteracting piece 40 on the basis of the above structure, and the technical scheme is as follows: the inner box 10 is embedded in the mounting surface V, and the inner box 10 is provided with a fixing portion 11 for fixing the fastener 30; the body portion 20 has an embedded portion 21 and a frame portion 22 surrounding the embedded portion 21, the embedded portion 21 is inserted into the inner box 10, and the frame portion 22 is used for attaching the mounting surface V; the fastener 30 passes through the mounting hole 213 of the body portion 20 and is connected with the fixing portion 11 to fix the body portion 20; the tension counteracting piece 40 is arranged in the cavity formed by the inner box 10 and the body portion 20, and the tension counteracting piece 40 is configured to generate an opposite force to offset part of the locking tension by abutting against the body portion 20 or elastically deforming during the fixing of the fastener 30.

[0041] The tension counteracting piece 40 is located in the cavity formed by the inner box 10 and the body portion 20 (i.e., the space between the embedded portion 21 and the inner box 10), and the tension counteracting piece 40 generates a reverse counteracting force in two ways of rigid abutment or elastic deformation, specifically: Referring to Figures 1 to 5Rigid abutment type: two support members are fixed to the inner box 10, and the abutting body part 20 is embedded in the corresponding position of the part 21, which provides support force opposite to the tension direction when the fastener 30 is fixed.

[0042] In combination Figure 1 Referring to Figure 8 And Figure 10 Elastic deformation type: elastic elements 42 such as springs and elastic sheets are arranged between the fixed part 11 of the inner box 10 and the body part 20, and generate reverse elastic force by compression deformation during the fixing process, which is coaxial with the locking tension and is offset.

[0043] Through the above two ways, the tension offsetting part 40 can directly weaken the net tension acting on the body part 20, dynamically balance the stress in the locking process, inhibit the bending deformation trend, and ensure that the frame part 22 is attached to the installation surface V while avoiding structural damage. In this way, without changing the basic structure of the existing socket inner box 10, body part 20 and fastener 30, through the functional components of the tension offsetting part 40, the contradiction between thin edge design and structural deformation resistance is solved by simple mechanical balance principle, which not only retains the aesthetic and dust prevention advantages of the frame part 22, but also improves the structural stability during the installation process through the reverse offsetting force.

[0044] The technical scheme of the present application sets the tension offsetting part 40 in the cavity formed by the body part 20 and the inner box 10, which generates offsetting force opposite to the locking tension direction during the fixing process of the fastener 30, directly weakens the net tension acting on the body part 20, and inhibits the bending deformation trend from the mechanical level, avoids the cracking of the frame part 22 due to excessive stress, suppresses the deformation, improves the structural stability, and improves the product structural strength and installation reliability.

[0045] And without increasing the thickness of the panel or complex reinforcing structure, the deformation problem is solved, and on the basis of maintaining the frame part 22 attached to the installation surface V and reducing the aesthetic advantage of dust accumulation, it is ensured that even if the inner box 10 is blocked by hard wires during installation, stable fixation can be achieved through reasonable locking force, taking into account the thin edge design and structural strength, and meeting the product installation.

[0046] And the design of the tension offsetting part 40 can be compatible with different inner box 10 environments (such as hard wire arrangement differences), dynamically adjust the stress balance during the locking process through the reverse offsetting force, reduce the product deformation risk caused by installation environment differences, improve the adaptability and fault tolerance rate of the socket in actual construction, adapt to various installation scenes, and reduce the use restrictions.

[0047] Compared with the solution of material upgrading or multi-component reinforcement in the related art, the tensile force counteracting member 40 can be implemented by simple rigid support or elastic element 42 (such as support block, spring, etc.), the structural form is simple, and complex machining process is not needed, the structure is simplified, which is helpful to control the production cost and maintain the product assembly efficiency.

[0048] With reference to Figures 1 to 5 , in embodiment 1, the specific scheme of providing the support force opposite to the tensile force direction when the fastener 30 is fixed is introduced in the case that the tensile force counteracting member 40 abuts against the corresponding position of the embedding part 21 of the body part 20.

[0049] With reference to Figure 2 , specifically, the tensile force counteracting member 40 is arranged on the cavity wall 10a or the fixed part 11 of the inner box 10, and is configured to abut against the embedding part 21 of the body part 20 when the fastener 30 is fixed, so as to generate the support force opposite to the locking tensile force direction. In this embodiment, the tensile force counteracting member 40 is arranged on the cavity wall 10a of the inner box 10. In other embodiments, it can also be arranged on the fixed part 11. The tensile force counteracting member 40 can be selectively installed on the cavity wall 10a (such as the left and right cavity walls 10a) of the inner box 10 or the fixed part 11 at the bottom of the inner box 10 (corresponding to the embedding part 21 of the body part 20), and the tensile force counteracting member 40 directly abuts against the embedding part 21 of the body part 20. When the fastener 30 (such as the mounting screw) is fixed, the body part 20 is subjected to the locking tensile force towards the inside of the inner box 10, at this time, the abutting surface of the tensile force counteracting member 40 and the embedding part 21 generates the support force opposite to the locking tensile force direction (that is, the reverse force along the outward of the body part 20), and part of the locking tensile force is counteracted through mechanical balance, so as to reduce the tensile stress of the thin wall of the edge of the body part 20.

[0050] With reference to Figure 3 and Figure 4To ensure that the support force directly acts on the easy-to-deform area of the body part 20 and to ensure the aesthetics after installation of the body part 20, further, the upper surface of the tensile force offsetting piece 40 is in abutment with the lower surface of the embedded part 21 to make the frame part 22 fit the edge of the box opening of the inner box 10. The upper surface of the tensile force offsetting piece 40 is in surface contact (rather than point contact or line contact) with the lower surface of the embedded part 21 of the body part 20, and the abutment area corresponds to the side of the embedded part 21 close to the frame part 22 (i.e., the transition area of the frame part 22 and the embedded part 21). When the fastener 30 is fixed, the locking tensile force moves the body part 20 to the inner box direction, at this time, the upper surface of the tensile force offsetting piece 40 exerts an upward support force on the lower surface of the embedded part 21, and finally tightly fits the edge of the box opening of the inner box 10 (i.e., the opening edge of the inner box 10 close to the installation surface V), eliminating the installation gap therebetween. In this way, the frame part 22 is flush with the edge of the box opening of the inner box 10, so that the socket forms a unified plane with the installation surface V after installation, the support force is dispersed and transmitted through surface contact, and the frame part 22 is prevented from cracking due to excessive local stress. When there is an error in the thickness of the installation surface V (such as uneven thickness of the plaster layer), the support force of the tensile force offsetting piece 40 can compensate for the relative position deviation of the installation surface V and the inner box 10 by adjusting the abutment strength, to ensure that the frame part 22 always fits the installation surface V. In this way, the installation gap problem of the traditional socket is solved, the structural stability of the frame part 22 is strengthened through stress dispersion, and the adaptability to complex installation surface V environment is improved.

[0051] To ensure the abutment stability and installation convenience of the body part 20 and to simplify the installation process, further, the number of the tensile force offsetting pieces 40 is two, and the two tensile force offsetting pieces 40 are respectively fixed by the clamping structure 40a and the cavity wall 10a of the inner box 10. The number of the tensile force offsetting pieces 40 is two, and the two tensile force offsetting pieces 40 are symmetrically arranged on the left and right cavity walls 10a of the inner box 10 along the central axis of the inner box 10, forming a bilateral support structure.

[0052] Each tensile force offsetting piece 40 is fixed by the clamping structure 40a and the cavity wall 10a of the inner box 10, and the clamping structure 40a can be an elastic buckle (such as a barb type clamping jaw or a wedge-shaped protrusion) arranged on the side of the tensile force offsetting piece 40 or a clamping groove; and the cavity wall 10a of the inner box 10 is correspondingly provided with a matching clamping groove (such as a rectangular through hole or an L-shaped groove) or a clamping buckle, and the quick fixing of “one push and clamping” is realized through elastic deformation, without the need for additional fasteners 30 (such as screws).

[0053] The two tensile force offsetting pieces 40 are symmetrically distributed on the two sides of the embedded part 21, and the support force thereof is symmetrical about the axis of the locking tensile force, which can offset the deflection moment of the body part 20 due to unilateral stress, and avoid the inclination problem of the frame part 22 that one side fits and the other side is raised.

[0054] Further, two tensile force offsetting members 40 are arranged on opposite sides of the cavity wall 10a of the inner box 10 and adjacent to the fixing portion 11. The two tensile force offsetting members 40 are symmetrically arranged along the axis of the fixing portion 11 and are respectively located on two sides of the fixing portion 11 and adjacent to the fixing portion 11. The two-sided tensile force offsetting members 40 form a “frame support structure” with the cavity wall 10a of the inner box 10 and the fixing portion 11, and convert the dispersed local stress into overall structural stress. When there is a difference in the length of the fastener 30 or the installation depth of the inner box 10 (for example, the thickness of the fixing portion 11 of different brands of inner boxes 10 is different), the tensile force offsetting members 40 adjacent to the fixing portion 11 can be adjusted in height to ensure that effective support can be provided under different installation conditions, thereby improving the universality of the scheme.

[0055] Referring to Figure 3 and Figure 4 Further, the tensile force offsetting members 40 are fixed to the cavity wall 10a of the inner box 10 by clamping. Each tensile force offsetting member 40 comprises a support beam body 41a, a clamping jaw 41b arranged on the support beam body 41a, and a clamping jaw adjusting member 41c penetrating the support beam body 41a and connected with the clamping jaw 41b. By screwing the clamping jaw adjusting member 41c, the clamping jaw 41b can be driven to extend and abut against the cavity wall 10a of the inner box 10.

[0056] Specifically, the support beam body 41a comprises a cross beam portion 1a1 and longitudinal beam portions 1a2 connected to two ends of the cross beam portion 1a1, respectively. The lower end of each longitudinal beam portion 1a2 extends a supporting wall 1a21 on the inner side away from the cavity wall 10a of the inner box 10. The supporting wall 1a21 and the lower part of the longitudinal beam portion 1a2 form a notch cavity 1a22 opening towards the cavity wall 10a of the inner box 10. The clamping jaw adjusting member 41c comprises a clamping jaw bolt 1c1 and a clamping jaw nut 1c2. The longitudinal beam portion 1a2 is provided with a through hole for the clamping jaw bolt 1c1 to penetrate and be threadedly connected with the clamping jaw nut 1c2. The clamping jaw nut 1c2 limits the clamping jaw 41b in the notch cavity 1a22. The supporting wall 1a21 limits the circumferential rotation of the clamping jaw nut 1c2. By screwing the clamping jaw bolt 1c1, the clamping jaw nut 1c2 abuts against the clamping jaw 41b to make the clamping jaw 41b extend out of the opening of the notch cavity 1a22.

[0057] The support beam body 41a is substantially "H" shaped, made of high-strength plastic or metal, and its length is adapted to the cavity wall 10a of the inner box 10. The upper surface is in abutment with the lower surface of the embedded part 21 of the body part 20. The clamping jaw is L-shaped and symmetrically arranged on both sides of the support beam body 41a (or on one side, according to the number of cavity walls 10a of the inner box 10). It is a flexible cantilever structure, and the end is provided with anti-slip tooth pattern for locking with the cavity wall 10a of the inner box 10. The lower end of each longitudinal beam part 1a2 extends inwardly (away from the cavity wall 10a of the inner box 10) to form a supporting wall 1a21 (short wall). The supporting wall 1a21 and the lower part of the longitudinal beam part 1a2 form a notched cavity 1a22 (cross-section is "H" shaped, and the opening faces the cavity wall 10a of the inner box 10). The clamping jaw nut 1c2 is square in outer contour and has an inner threaded hole. It is embedded in the notched cavity 1a22, and one side is in abutment with the driving end of the clamping jaw 41b. The clamping jaw bolt 1c1 is a cylindrical head straight / cross screw, which is convenient for screwing operation. The outer thread of the rod part cooperates with the clamping jaw nut 1c2. The supporting wall 1a21 of the notched cavity 1a22 and the inner wall of the longitudinal beam part 1a2 form a "constraint space". After the clamping jaw nut 1c2 is embedded, it cannot rotate circumferentially (only can move axially), which ensures that the nut only moves linearly when the clamping jaw bolt 1c1 is screwed. The clamping jaw nut 1c2 is a square nut, a rectangular nut or other polygonal nut, as long as it can make the clamping jaw 41b extend out of the notched cavity 1a22 and be clamped with the inner wall.

[0058] By referring to Figure 6 and Figure 7 , in order to facilitate the determination of the installation height of the two tension compensation members 40, the two tension compensation members 40 can be installed with the aid of the installation assembly 60. The two tension compensation members 40 are fixed on the installation assembly 60. The installation assembly 60 includes a tool main body 61, which is provided with a placing part 62 and a holding part 63. The placing part 62 is used for detachably connecting the tension compensation member 40 to the tool main body 61. The holding part 63 is detachably connected with the fixing part 11 to place the tension compensation member 40 in the installation space 10b. The two tension compensation members 40 are fixed on the tool main body 61 by the placing part 62, such as by screw connection. The tool main body 61 "occupies" the screw hole of the fixing part 11 through the holding part 63. After the two tension compensation members 40 reach the preset installation depth, the knob clamping bolt 1c1 is screwed, so that the clamping jaw 41b is fixed with the cavity wall 10a of the inner box 10. Then the installation assembly 60 can be removed.

[0059] To improve the support rigidity of the body part 20, avoid the support beam itself deformation leading to the cancellation of force failure. Further, the cross-sectional area of the longitudinal beam part 1a2 is greater than the cross-sectional area of the cross beam part 1a1. The longitudinal beam part 1a2 as the support beam body 41a and the connecting "leg" of the inner box 10 cavity wall 10a, the increase of its cross-sectional area can improve the overall stability of the structure, by enhancing the structural strength of the key stress part of the support beam (longitudinal beam part 1a2), improve the support rigidity of the body part 20, avoid the support beam itself deformation leading to the cancellation of force failure; At the same time, through the thickness difference of the longitudinal beam part 1a2 and the cross beam part 1a1, the overall strength is guaranteed, the material cost can be reduced. Moreover, the cross-sectional area of the longitudinal beam part 1a2 is large, which ensures that the plastic melt fills the longitudinal beam part 1a2 (the area far from the gate) first during injection molding, reducing defects such as material shortage and shrinkage; At the same time, the cross-sectional area of the cross beam part 1a1 is small, which can shorten the cooling time and reduce the risk of internal stress cracking caused by uneven cooling.

[0060] For the scene of "inner box 10 hard line hindering the body part 20 to fit", an auxiliary fixing scheme is provided to expand the adaptability of the product to complex installation environment. Further, the embedded part 21 of the body part 20 is provided with at least two connecting positions 211, and the longitudinal beam part 1a2 is provided with mounting parts 1a23 corresponding to the connecting positions 211. The connecting positions 211 and the mounting parts 1a23 are provided as screw holes, and the connecting positions 211 are detachably connected with the mounting parts 1a23 through mounting members (such as screws). In combination with Figure 2 and Figure 5 In the present embodiment, the embedded part 21 is rectangular and provided with four connecting positions 211; in other embodiments, the opposite corners of the embedded part 21 can be provided with two connecting positions 211. The detachable fixing is achieved by using screws (instead of buckles or glue), which allows the position of the support beam body 41a to be adjusted during installation, and facilitates disassembly and replacement during later maintenance.

[0061] In combination with Figure 2 and Figure 5 In order to improve the abutting stability and prevent the support from loosening due to vibration during long-term use, the durability of the product is enhanced. Further, a filling layer 41d is arranged between the tensile force counteracting member 40 and the cavity wall 10a of the inner box 10. The filling layer 41d is a solid glue or an adhesive member pre-fixed to the support beam body 41a, which is used to fill the gap between the two. For example, the solid glue is prearranged in the groove at the end of the claw 41b; when the claw 41b is extended to abut against the cavity wall 10a, the solid glue is plastically deformed by extrusion, filling the micro gap (such as 0.1-0.3mm gap caused by machining roughness) between the claw 41b and the cavity wall 10a. Alternatively, the back glue is pre-stuck to the outer side of the longitudinal beam part 1a2 of the support beam body 41a, and the thickness of the back glue is slightly larger than the expected gap (for example, when the designed gap is 0.3mm, the thickness of the gasket is 0.5mm), which fills the gap by compression deformation when abutting.

[0062] Specifically, the support beam body 41a in the shape of a U-shaped bracket includes a cross beam part 1a1 and longitudinal beam parts 1a2 connected to both ends of the cross beam part 1a1, respectively, and each longitudinal beam part 1a2 is provided with a through hole and a connecting position 211, and the inner side of the lower end of the longitudinal beam part 1a2 extends a supporting wall 1a21, and the supporting wall 1a21 and the lower part of the longitudinal beam part form a notch cavity 1a22 which is open to the outside, that is, the cavity wall 10a of the inner box 10, and the L-shaped clamping claw 41b is arranged in the notch cavity 1a22, and the clamping claw 41b is limited by the clamping nut 1c2 connected to the clamping claw bolt 1c1, when the knob clamping claw bolt 1c1 is rotated, the clamping nut 1c2 abuts against the clamping claw by means of the supporting wall 1a21, so that the clamping claw 41b extends out of the opening of the notch cavity 1a22 and abuts against the cavity wall 10a of the inner box 10, and the support beam is fixed. In order to ensure the fixing effect, solid glue is filled in the gap between the support beam and the cavity wall 10a of the inner box 10, of course, the fixing glue can also be an adhesive member fixed in the longitudinal beam part 1a2 and / or the cross beam part 1a1 of the support beam in advance. When installing, the body part 20 is inserted into the inner box 10, and is locked with the fixing part 11 by the fastening member 30, if there are many hard wires in the bottom box, which hinder the body part 20 from being attached to the installation surface V, four connecting positions 211 are arranged on the surface of the embedding part 21 of the body part 20, and the longitudinal beam part 1a2 of the support beam is correspondingly provided with a mounting part 1a23, which can be connected with the mounting part 1a23 by a screw, so as to ensure that the edge of the body part 20 is attached to the wall. Two support beams are arranged oppositely and adjacent to the fixing part 11, so that the support beams support the body part 20, and prevent the thin edge of the body part 20 from being cracked by the installation screw.

[0063] In combination Figure 1 and with reference to Figures 8 to 10 , embodiment 2, the tension compensation member 40 is in the form of elastic deformation, and during the fixing process, the reverse elastic force is generated by compression deformation to offset the coaxial tension.

[0064] Specifically, the tension compensation member 40 is an elastic element 42, which is arranged between the embedding part 21 of the body part 20 and the fixing part 11 of the inner box 10, and is configured to generate a reverse elastic force in the axial direction of the locking tension during the fixing process of the fastening member 30, so as to offset part of the locking tension.

[0065] The elastic element 42 is arranged between the lower surface of the embedding part 21 of the body part 20 and the upper surface of the fixing part 11 of the inner box 10 (that is, in the force path of the fastening member 30), and is coaxially distributed with the fastening member 30 (for example, at least one elastic element 42 is arranged on the outer sleeve of each fastening member 30). The elastic element 42 (spring, pad, etc.) abuts against the embedding part 21 of the body part 20, at this time, the frame part 22 has a certain distance from the installation surface V, and during the locking process, the elastic element 42 offsets part of the tension by the reverse force of elastic deformation, prevents the contact pressure between the frame part 22 of the body part 20 and the installation surface V from being too large due to the excessive locking pressure, and causes the deformation or cracking of the body part 20.

[0066] In some scenarios, there is a hard line inside the inner box 10, which will block the embedded part 21 from entering the inner box 10. In this case, the frame part 22 of the body part 20 and the mounting surface V can have a height inconsistency (e.g., one side is high and the other side is low), which requires a larger locking tension. The present scheme sets the elastic element 42 between the lower surface of the embedded part 21 of the body part 20 and the upper surface of the fixed part 11 of the inner box 10. The elastic element 42 offsets part of the tension through the counterforce, preventing the contact pressure between the frame part 22 of the body part 20 and the mounting surface V from being too large due to excessive locking pressure, and preventing deformation or cracking of the body part 20. In addition, this scheme can adapt to construction errors of different fixing forces. For example, when a person manually screws the screw, the fixing force is quite different (a novice may have a larger fixing force). The elastic element 42 adjusts the counterforce through deformation (e.g., when the fixing force increases, the compression amount increases, and the counterforce increases synchronously), so that the effective tension transmitted to the embedded part 21 is stable, reducing the dependence on the proficiency of the construction personnel.

[0067] Referring to Figure 10 , specifically, the elastic element 42 is selected from at least one of a metal elastic washer, a metal spring, a rubber elastic washer, or a silica gel elastic washer. If the thickness of the elastic element 42 is not enough, a plastic\metal heightening washer can be used, and the heightening washer can be designed to have different thicknesses. Depending on the application scenario, the cost can be adaptively reduced.

[0068] Referring to Figure 10 , in the figure, piece A is a heightening washer; the heightening washer is made of hard materials such as plastic or metal, and is used flexibly by thickness; piece B in the figure is a spring, such as metal or rubber or silica gel; piece C in the figure is an elastic washer, which is made of rubber or silica gel; the elastic washer can also be used together with the heightening washer A. Piece D in the figure is Figure 6 the elastic element 42 shown in the figure, which is made of metal, and piece D is a ring with a notch, such as a ring, which is height offset on both sides of the notch to realize the functions of abutting and elastic deformation.

[0069] The number of elastic elements 42 is at least one, and the elastic elements 42 are coaxially arranged with the fastener 30. In an embodiment, there is one elastic element 42 between each fixed part 11 and embedded part 21; in other embodiments, there are multiple elastic elements 42 between each fixed part 11 and embedded part 21, and the types of elastic elements 42 can be different. Coaxial arrangement ensures uniform transmission of elastic force.

[0070] To enhance the local rigidity and deformation resistance of the embedding part 21 and optimize material utilization, achieving a balance between lightweight and high strength, the embedding part 21 of the main body 20 is further provided with a groove 212 opening towards the cavity wall 10a of the inner box 10. A reinforcing beam 50 is provided within the groove 212 to enhance the structural strength of the main body 20 on the fixing part 11 side. The reinforcing beam 50 has an I-shaped or U-shaped cross-section, with its upper and lower surfaces respectively fitting against the top and bottom of the groove 212. Both ends of the reinforcing beam 50 extend to the left and right side walls of the embedding part 21, forming a rigid support frame spanning the embedding part 21.

[0071] Reference Figure 9 The reinforcing beam 50 faces the inner box 10 cavity wall 10a (rather than the upper and lower surfaces), ensuring that the lateral support force of the reinforcing beam 50 acts directly on the area where the embedded part 21 contacts the inner box 10 (around the fixing point of the fastener 30). By hollowing out the non-critical stress area through the groove 212, both weight and cost can be reduced. At the same time, the reinforcing beam 50 only provides support in the high stress area. Compared with the overall thickening of the embedded part 21, it can reduce the use of materials and reduce costs while meeting the structural strength requirements.

[0072] Specifically, the reinforcing beam 50 is fixed or injection molded integrally with the groove 212. In scenarios requiring disassembly, the back of the reinforcing beam 50 (such as metal or high-strength plastic) is fixed to the insert 21 by screws or other means. In scenarios where disassembly is not required, the reinforcing beam 50 is integrally formed by pre-embedded injection molding, such as by pre-placing the reinforcing beam 50 in the injection mold cavity, injecting it, enclosing it, and then cooling it to form the shape. Alternatively, the reinforcing beam 50 can be formed by secondary injection molding, such as first injection molding the main body of the groove 212 (with a groove reserved in the shape of the reinforcing beam 50), then placing the reinforcing beam 50 into the groove, and filling the gap through secondary injection molding.

[0073] Reference Figure 9 Specifically, the reinforcing beam 50 includes an intermediate connecting portion 51 and reinforcing portions 52 located at both ends of the intermediate connecting portion 51. The cross-sectional area of ​​the reinforcing portions 52 is larger than that of the intermediate connecting portion 51. While ensuring structural strength (bending and torsional resistance), this design improves compatibility with the groove 212 and simplifies the production process. Furthermore, it maximizes material utilization and reduces overall costs.

[0074] Specifically, the surface of the reinforcing beam 50 facing the fixing part 11 is provided with a positioning groove, and the elastic element 42 is disposed in the positioning groove to limit the radial displacement of the elastic element 42. The positioning groove limits the displacement of the elastic element 42, enhances structural stability, and can pre-position the elastic element 42, simplifying the assembly process.

[0075] In addition, combined Figure 1 , Figure 2 and Figure 8 andFigure 9 In Embodiment 1 and Embodiment 2, in order to improve the aesthetic appearance of the body part 20; the surface of the body part 20 can also be covered by the decorative plate 23.

[0076] As shown in Figure 1 and Figure 7 , the decorative plate 23 is clamped and fixed with the body part, of course, other fixing methods such as gluing can also be used, which are not limited. In order to make the appearance of the body part 20 more consistent, the body part 20 is provided with a sunken design matching the decorative plate 23, so that the decorative plate 23 is flush with the surface of the body part 20. In this way, the body part 20 is installed on the mounting surface as a whole, and the appearance consistency is better; the quality is stronger.

[0077] The above is only an exemplary embodiment of the present application, and does not limit the protection scope of the present application, any equivalent structural transformation made under the technical concept of the present application, or direct / indirect application in other related technical fields is included in the protection scope of the present application.

Claims

1. An electrical device disposed in an installation space, wherein a fixing part is provided within the installation space, characterized in that, The electrical device comprises: a body portion having an embedded portion and a frame portion surrounding the embedded portion, the embedded portion being inserted into the mounting space, the frame portion being attached to a mounting surface of the mounting space, the embedded portion being provided with a mounting hole for an external fastener to pass through and connect with the fixing portion to fix the body portion; and a tension offsetting member arranged in a cavity formed by the mounting space and the body portion, the tension offsetting member being abutted against the body portion or elastically deformed during the fastener fixing process to generate a force opposite to the locking tension to offset part of the locking tension.

2. The electrical device of claim 1, wherein, The tension offsetting member is arranged to be abutted against the embedded portion during the fastener fixing to generate a support force opposite to the locking tension.

3. The electrical device of claim 2, wherein, The number of the tension offsetting members is two, and the two tension offsetting members are respectively clamped and fixed to the cavity wall of the mounting space through a clamping structure.

4. The electrical device of claim 3, wherein, The two tension offsetting members are arranged on opposite sides of the cavity wall of the mounting space and adjacent to the fixing portion.

5. The electrical device of claim 3, wherein, Each of the tension offsetting members comprises a support beam body, a clamping jaw arranged on the support beam body, and a clamping jaw adjusting member passing through the support beam body and connected with the clamping jaw, and the clamping jaw can be driven to extend out and abut against the cavity wall of the mounting space by screwing the clamping jaw adjusting member.

6. The electrical device of claim 5, wherein, The support beam body comprises a cross beam portion and longitudinal beam portions connected to both ends of the cross beam portion, and the lower end of each longitudinal beam portion extends a supporting wall on the inner side away from the cavity wall, and the supporting wall and the lower part of the longitudinal beam portion form a notch cavity opening towards the cavity wall; the clamping jaw adjusting member comprises a clamping jaw bolt and a clamping jaw nut, the longitudinal beam portion is provided with a through hole for the clamping jaw bolt to pass through and be threadedly connected with the clamping jaw nut, and the clamping jaw nut limits the clamping jaw in the notch cavity; the supporting wall limits the circumferential rotation of the clamping jaw nut; and by screwing the clamping jaw bolt, the clamping jaw nut abuts against the clamping jaw to make the clamping jaw extend out of the opening of the notch cavity.

7. The electrical device of claim 6, wherein, The embedded portion of the body portion is provided with a connecting site arranged in a staggered manner with the mounting hole, the longitudinal beam portion is provided with a mounting portion corresponding to the connecting site, and the connecting site is detachably connected with the mounting portion through a mounting member.

8. The electrical device of claim 7, wherein, The embedded portion is rectangular and provided with four connecting sites, and one mounting portion corresponds to one connecting site.

9. The electrical device of claim 6, wherein, The cross-sectional area of the longitudinal beam portion perpendicular to its own length direction is greater than the cross-sectional area of the cross beam portion perpendicular to its own length direction. The upper surface of the support beam body abuts against the lower surface of the embedded portion to make the frame portion attached to the mounting surface of the mounting space. A filling layer is arranged between the support beam body and the cavity wall of the mounting space, and the filling layer is a solid adhesive or an adhesive member previously fixed to the support beam body.

10. The electrical device of claim 1, wherein, The tensile force offset member is an elastic element arranged between the embedding portion and the fixing portion, and is configured to generate a reverse elastic force in the axial direction of the locking tensile force by compression deformation during the fastener fixing process, so as to offset at least part of the locking tensile force.

11. The electrical device of claim 10, wherein, The elastic element is selected from at least one of a metal elastic washer, a metal spring, a rubber elastic washer, or a silica gel elastic washer. And / or, the number of the elastic element is at least one, and is coaxially arranged with the fastener.

12. The electrical device of claim 10, wherein, The embedding portion of the body portion is provided with an embedding groove opening towards the cavity wall of the mounting space, and a reinforcing beam is arranged in the embedding groove, and the reinforcing beam is used to enhance the structural strength of the body portion on the side of the fixing portion.

13. The electrical device of claim 12, wherein, The reinforcing beam is fixed or integrally injection molded with the embedding groove. And / or, the reinforcing beam comprises an intermediate connecting portion and reinforcing portions located at both ends of the intermediate connecting portion, and the cross-sectional area of the reinforcing portions is greater than that of the intermediate connecting portion.

14. The electrical device of claim 1, wherein, The body portion is a switch and / or a socket.

15. A mounting assembly for mounting an electrical device as claimed in any one of claims 1 to 14, characterised in that, The mounting assembly comprises a tool main body provided with a placing portion and a holding portion, the placing portion is used for detachably connecting the tensile force offset member with the tool main body, and the holding portion is used for detachably connecting with the fixing portion, so as to place the tensile force offset member in the mounting space.

Images