Connecting structure and connecting method of connecting plate and shell

Abstract

The invention relates to the technical field of circuit breakers, and particularly discloses a connecting structure and a connecting method of a connecting plate and a shell. The connecting structure of the connecting plate and the shell comprises the shell, the connecting plate and a connecting agent, an installation space is formed in the shell, and connecting grooves are formed in the two opposite inner side walls of the installation space; two opposite connecting edges of the connecting plate are respectively in interference fit with the two connecting grooves, each connecting edge comprises a first connecting surface, a second connecting surface and a third connecting surface which are matched with the groove walls of the connecting grooves, and at least one of the first connecting surface, the second connecting surface and the third connecting surface is provided with a plurality of glue grooves; the connecting agent is arranged in the glue groove so that the connecting plate can be bonded to the connecting groove. According to the connecting structure of the connecting plate and the shell, integration of the connecting plate and the shell is achieved through the connecting agent, position deviation of the connecting plate caused by heating is avoided, the working reliability of the bimetallic strip on the connecting plate is improved, and then the overload protection reliability of the circuit breaker is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a connection structure and a connection method between a connecting plate and a shell. Background Art

[0002] The circuit breaker has short circuit protection and overload protection. The short circuit protection is realized by the coil and the moving iron core. Most of the overload protection uses the heat generated by the bimetallic strip under the current to drive the bimetallic strip to bend, push the tripping link and drive the lock. After the lock and tripping buckle are separated, the product trips and completes the overload protection.

[0003] like Figure 1 As shown, at present, the bimetallic strip 10 is generally installed on the connecting plate 20, and there is a bimetallic installation space in the circuit breaker housing 30. Slots 31 are provided on the opposite side walls of the bimetallic installation space, and the two sides of the connecting plate 20 are respectively plugged into the two slots 31 to realize the installation of the bimetallic strip 10 in the circuit breaker housing 30. After the bimetallic strip 10 is heated, it will transfer heat to the connecting plate 20, causing the connecting plate 20 to heat up and expand. Therefore, as the bimetallic strip 10 is heated many times, the connecting plate 20 will repeatedly expand and contract, resulting in a gap between the slots 31 on the circuit breaker housing 30 and position movement, which eventually causes the position of the bimetallic strip 10 to shift, affecting the working stability of the bimetallic strip 10. In addition, the circuit breaker housing 30 will also have dimensional deviations during the injection molding production process, resulting in a gap between the circuit breaker housing 30 and the connecting plate 20, causing the position of the connecting plate 20 to fluctuate during the expansion and contraction process, affecting the working stability of the bimetallic strip 10.

[0004] Therefore, it is urgent to propose a connection structure and a connection method between a connecting plate and a shell to solve the above technical problems. Summary of the invention

[0005] According to one aspect of the present invention, the present invention provides a connection structure between a connecting plate and a shell, which can realize the integration of the connecting plate and the shell, avoid the position displacement of the connecting plate due to heat, improve the reliability of the bimetallic strip on the connecting plate, and further improve the reliability of the overload protection of the circuit breaker.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The connection structure between the connecting plate and the housing comprises:

[0008] A housing, wherein an installation space is provided on the housing, and connecting grooves are provided on two opposite inner side walls of the installation space;

[0009] A connecting plate, wherein two opposite connecting edges of the connecting plate are respectively interference-fitted with the two connecting grooves, each of the connecting edges comprises a first connecting surface, a second connecting surface and a third connecting surface matched with the groove wall of the connecting groove, and at least one of the first connecting surface, the second connecting surface and the third connecting surface is provided with a plurality of glue grooves;

[0010] A connecting agent is arranged in the adhesive groove to bond the connecting plate to the connecting groove.

[0011] Optionally, the second connecting surface connects the first connecting surface and the third connecting surface, and a plurality of glue grooves are arranged on the second connecting surface. Along the width direction of the second connecting surface, each glue groove penetrates the first connecting surface and the third connecting surface.

[0012] Optionally, the second connecting surface connects the first connecting surface and the third connecting surface, a plurality of the glue grooves are provided on the first connecting surface, and the glue grooves are provided with openings on both the first connecting surface and the second connecting surface.

[0013] Optionally, the second connecting surface is connected to the first connecting surface and the third connecting surface, a plurality of the glue grooves are provided on the third connecting surface, and the glue grooves are provided with openings on both the third connecting surface and the second connecting surface.

[0014] Optionally, a plurality of the glue grooves are arranged at equal intervals along the length direction of the connecting edge.

[0015] Optionally, the connecting plate includes a connecting portion with a trapezoidal structure, the two oblique sides of the connecting portion are the connecting edges, the connecting portion is inserted into the connecting groove through the end with smaller width, and the width of the connecting groove gradually decreases along the direction of insertion of the connecting portion to match the connecting portion.

[0016] Optionally, the connecting edge includes two parallel straight sections and an inclined section connecting the two straight sections, and the inclined section is provided with a plurality of the glue grooves.

[0017] Optionally, a limiting boss is provided at the tail end of the connecting groove, and an abutting inclined surface is provided at one end of each connecting edge on the connecting plate, and the abutting inclined surface abuts against the limiting boss.

[0018] Optionally, each of the connecting edges is provided with at least two notches, and the notches on the two connecting edges are arranged in one-to-one correspondence to divide the connecting plate into a plurality of stamping parts, and the plurality of stamping parts are processed by forward and reverse stamping.

[0019] According to another aspect of the present invention, the present invention further provides a method for connecting a connecting plate and a housing, which is applied to the connecting structure of the connecting plate and the housing described in any of the above technical solutions, and the method for connecting the connecting plate and the housing comprises:

[0020] Prepare the connecting plate and the housing;

[0021] Applying a connecting agent on at least one of the first connecting surface, the second connecting surface, and the third connecting surface of the connecting edge;

[0022] Align the two connecting edges of the connecting plate with the openings of the two connecting grooves respectively, and insert the two connecting grooves;

[0023] The bonding agent is cured.

[0024] The beneficial effects of the present invention are:

[0025] The present invention provides a connection structure between a connecting plate and a housing, comprising a housing, a connecting plate and a connecting agent. An installation space is provided on the housing, and connecting grooves are provided on two opposite inner side walls of the installation space. The connecting plate has connecting edges corresponding to the connecting grooves one by one, and each connecting edge is interference-fitted with the connecting groove. In addition, at least one of the first connecting surface, the second connecting surface and the third connecting surface of each connecting edge is provided with a plurality of adhesive grooves, and a connecting agent is provided in the adhesive groove, and the connecting plate can be bonded to the groove wall of the connecting groove by the connecting agent. The connecting agent is used to assist the connection between the connecting plate and the connecting groove, so that when a gap appears between the connecting groove and the connecting plate due to processing error or repeated expansion and contraction of the connecting plate, the connecting plate and the housing can still maintain a reliable connection, effectively avoiding the position displacement of the connecting plate during operation, ensuring the stability of the position of the bimetallic strip arranged on the connecting plate, and thus improving the reliability of the overload protection of the circuit breaker. In addition, the connection structure between the connecting plate and the housing is relatively simple, easy to assemble, and low in cost.

[0026] The present invention also provides a method for connecting a connecting plate and a housing, which is applied to the connection structure of the connecting plate and the housing. The method for connecting the connecting plate and the housing can realize the integration of the connecting plate and the housing, thereby improving the reliability of overload protection of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a cross-sectional view of the assembly diagram between the circuit breaker housing, the connecting plate and the bimetallic strip in the prior art;

[0028] Figure 2 A schematic diagram of the structure of a housing provided in Embodiment 1 of the present invention;

[0029] Figure 3 A schematic diagram of the structure of a connecting plate provided in Embodiment 1 of the present invention;

[0030] Figure 4 A partial cross-sectional view of an assembly diagram of a housing and a connecting plate provided in Embodiment 1 of the present invention;

[0031] Figure 5 for Figure 3 A top view of

[0032] Figure 6 A schematic diagram of the structure of another connecting plate provided in the first embodiment of the present invention;

[0033] Figure 7 for Figure 6 A top view of

[0034] Figure 8 for Figure 7 Sectional view at AA;

[0035] Fig. 9 A schematic diagram of a connecting plate provided in Embodiment 2 of the present invention;

[0036] Fig.10 A schematic diagram of another connecting plate provided in Embodiment 2 of the present invention;

[0037] Fig.11 A schematic diagram of a connecting plate provided in Embodiment 3 of the present invention;

[0038] Fig.12 A flow chart of a method for connecting a connecting plate and a housing provided in a fourth embodiment of the present invention;

[0039] Fig.13 This is a schematic diagram of coating a connecting agent on a connecting plate provided in Embodiment 4 of the present invention.

[0040] In the figure:

[0041] 10. Bimetallic strip; 20. Connecting plate; 30. Circuit breaker housing; 31. Slot;

[0042] 100, housing; 110, installation space; 120, connection groove; 130, limiting boss;

[0043] 200, connecting plate; 201, connecting portion; 210, connecting edge; 2101, straight section; 2102, inclined section; 211, first connecting surface; 212, second connecting surface; 213, third connecting surface; 214, glue groove; 220, mounting hole; 230, notch; 240, abutting inclined surface;

[0044] 300. Connector. DETAILED DESCRIPTION

[0045] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] Embodiment 1

[0050] like Figure 1As shown, at present, the bimetallic strip 10 is generally installed on the connecting plate 20, and there is a bimetallic installation space in the circuit breaker housing 30. Slots 31 are provided on the opposite side walls of the bimetallic installation space, and the two sides of the connecting plate 20 are respectively plugged into the two slots 31 to realize the installation of the bimetallic strip 10 in the circuit breaker housing 30. After the bimetallic strip 10 is heated, it will transfer heat to the connecting plate 20, causing the connecting plate 20 to heat up and expand. Therefore, as the bimetallic strip 10 is heated many times, the connecting plate 20 will repeatedly expand and contract, resulting in a gap between the slots 31 on the circuit breaker housing 30 and position movement, which eventually causes the position of the bimetallic strip 10 to shift, affecting the working stability of the bimetallic strip 10. In addition, the circuit breaker housing 30 will also have dimensional deviations during the injection molding production process, resulting in a gap between the circuit breaker housing 30 and the connecting plate 20, causing the position of the connecting plate 20 to fluctuate during the expansion and contraction process, affecting the working stability of the bimetallic strip 10.

[0051] Based on the above problems, this embodiment provides a connection structure between the connecting plate and the shell, which can realize the integration of the connecting plate and the shell, avoid the position displacement of the connecting plate due to heat, improve the reliability of the bimetallic strip on the connecting plate, and further improve the reliability of the circuit breaker overload protection.

[0052] Specifically, Figure 2-Figure 4 As shown, the connection structure between the connecting plate and the housing includes a housing 100, a connecting plate 200 and a connecting agent 300. The housing 100 is provided with an installation space 110, and connecting grooves 120 are provided on two opposite inner side walls of the installation space 110. Two opposite connecting edges 210 of the connecting plate 200 are respectively interference-fitted with the two connecting grooves 120, and each connecting edge 210 includes a first connecting surface 211, a second connecting surface 212 and a third connecting surface 213 that match the groove wall of the connecting groove 120, and at least one of the first connecting surface 211, the second connecting surface 212 and the third connecting surface 213 is provided with a plurality of adhesive grooves 214. The connecting agent 300 is disposed in the adhesive grooves 214 to bond the connecting plate 200 to the connecting grooves 120.

[0053] The connection structure between the connection plate and the housing provided in this embodiment realizes integration of the connection plate 200 and the housing 100 by means of a "double" connection, wherein the first connection is an interference fit between the connection plate 200 and the connection groove 120 on the housing 100, and the second connection is the bonding of the connection agent 300 in the glue groove 214 on the connection plate 200 and the connection groove 120. With such a configuration, when a gap appears between the connection groove 120 and the connection plate 200 due to a processing error or repeated expansion and contraction of the connection plate 200, the connection plate 200 and the housing 100 can still be reliably connected by bonding, effectively avoiding positional displacement of the connection plate 200 during operation, ensuring the stability of the position of the bimetallic strip 10 set on the connection plate 200, and thus improving the reliability of the overload protection of the circuit breaker. In addition, the connection structure between the connection plate and the housing is relatively simple, easy to assemble, and low in cost.

[0054] Since the connecting plate 200 is generally made of metal material and the shell 100 is generally made of plastic material, the connecting agent 300 can use a thread locker, preferably a K-0262 thread locker. This connecting agent 300 can withstand the mechanism's tripping force (the force that the bimetallic strip 10 needs to overcome in its pushing action) and the influence of high temperature to ensure that the connecting plate 200 does not fluctuate in position.

[0055] It is understandable that the connection structure between the connecting plate and the housing provided in this embodiment can be widely used in connecting plate structures with bimetallic strips 10, such as motor protection relays, thermal overload relays and other relay products.

[0056] It is worth noting that, after testing and verification, the circuit breaker using the connection structure between the connecting plate and the housing provided by this embodiment has a quick calibration pass rate of more than 95%, which can meet the requirements of product factory inspection. In addition, the product has higher stability.

[0057] Optionally, a plurality of glue grooves 214 may be arranged at equal intervals along the length direction of the connecting edge 210 for ease of processing.

[0058] Alternatively, if Figure 3 and Figure 5As shown, in a possible embodiment, the second connection surface 212 connects the first connection surface 211 and the third connection surface 213, and a plurality of adhesive grooves 214 are arranged on the second connection surface 212. Each adhesive groove 214 penetrates the first connection surface 211 and the third connection surface 213 along the width direction of the second connection surface 212. Such arrangement, on the one hand, has a simple structure and is convenient for processing the adhesive groove 214; on the other hand, the first connection surface 211, the second connection surface 212 and the third connection surface 213 can all be bonded to the groove wall of the connection groove 120, thereby improving the bonding reliability between the connecting plate 200 and the connection groove 120, and only by setting the adhesive groove 214 on the second connection surface 212, the bonding of the first connection surface 211, the second connection surface 212 and the third connection surface 213 can be achieved, and the bonding effect is improved on the basis of setting as few adhesive grooves 214 as possible.

[0059] Furthermore, the depth b1 of the glue groove 214 is greater than or equal to 0.15 mm, preferably 0.3 mm, and the width b2 of the glue groove 214 is greater than or equal to 0.2 mm, preferably 0.8 mm. This arrangement is convenient for processing. When stamping is used, it is beneficial to increase the life of the mold, and the glue capacity can meet the needs.

[0060] Alternatively, if Figure 6-Figure 8 As shown, in another possible embodiment, the second connection surface 212 connects the first connection surface 211 and the third connection surface 213, and a plurality of adhesive grooves 214 are provided on the first connection surface 211, and the adhesive grooves 214 are provided with openings on both the first connection surface 211 and the second connection surface 212. With such a configuration, on the one hand, the structure is simple, and the processing of the adhesive grooves 214 is convenient; on the other hand, the first connection surface 211 and the second connection surface 212 can both be bonded to the groove wall of the connection groove 120, thereby improving the bonding reliability between the connecting plate 200 and the connection groove 120, and the adhesive grooves 214 are only provided on the first connection surface 211 to achieve bonding of the first connection surface 211 and the second connection surface 212, thereby improving the bonding effect on the basis of providing as few adhesive grooves 214 as possible.

[0061] Further, see Figure 7 and Figure 8, the length b3 of the glue groove 214 is 1mm-1.5mm, and can be 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm or 1.5mm, etc., which can be set according to actual needs. The width b4 of the glue groove 214 is 0.3mm-0.8mm, and can be 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm or 0.8mm, etc., which can be set according to actual needs. The depth b5 of the glue groove 214 is 0.2mm-0.5mm, and can be 0.2mm, 0.3mm, 0.4mm or 0.5mm, etc., which can be set according to actual needs. Such a setting is convenient for processing. When processing by stamping, it is beneficial to increase the life of the mold, and the amount of glue can meet the needs.

[0062] Optionally, in other possible embodiments, the second connection surface 212 connects the first connection surface 211 and the third connection surface 213, and a plurality of glue grooves 214 may be provided on the third connection surface 213, and the glue grooves 214 are provided with openings on both the third connection surface 213 and the second connection surface 212. The specific configuration can be based on actual needs, and this application does not make specific limitations.

[0063] Further, see Figure 2 and Figure 3 The tail end of the connection groove 120 is provided with a limiting boss 130, and on the connection plate 200, abutting inclined surface 240 is provided at one end of each connection edge 210, and the abutting inclined surface 240 abuts against the limiting boss 130. Through the cooperation between the limiting boss 130 and the abutting inclined surface 240, on the one hand, the distance of the connection plate 200 inserted into the connection groove 120 can be limited, thereby ensuring the assembly accuracy of the connection plate 200; on the other hand, the setting of the abutting inclined surface 240 makes the width of the end of the connection part 200 smaller, thereby facilitating the assembly of the connection plate 200.

[0064] It is worth noting that the tail end of the connection groove 120 refers to the end where the connecting plate 200 is assembled in place.

[0065] Optionally, the abutting slope 240 may be formed by chamfering one end of the connecting edge 210 .

[0066] Optionally, continue to see Figure 3 , Figure 5-Figure 7 A mounting hole 220 may be provided on the connecting plate 200 , and the mounting hole 220 is used to connect with the bimetallic strip 10 to fix the bimetallic strip 10 .

[0067] Embodiment 2

[0068] Since the shell 100 is generally made of plastic material and the connecting plate 200 is generally made of metal material, the connecting plate 200 with greater hardness is easily squeezed and cut off the interference material on the groove wall of the connecting groove 120 during the process of being extruded and installed into the connecting groove 120 of the shell 100, so that after the connecting plate 200 is assembled, the interference amount between the connecting plate 200 and the connecting groove 120 cannot meet the design requirements, affecting the reliability of the assembly of the connecting plate 200 and the shell 100.

[0069] Based on the above problems, this embodiment provides a connection structure between a connecting plate and a housing, which can improve the cutting of the connecting plate 200 on the wall material of the connecting groove 120 , and is beneficial to improving the reliability of the interference fit between the connecting plate 200 and the connecting groove 120 .

[0070] The connection structure between the connecting plate and the housing provided in this embodiment is substantially the same as that in the first embodiment, and is only improved on the basis of the first embodiment. Therefore, only the differences between the two are described here, and the same structures as those in the first embodiment are not described here. In this embodiment, the same or corresponding technical features as those in the first embodiment are marked with the same reference numerals.

[0071] Specifically, Fig. 9 As shown, in this embodiment, the connecting plate 200 includes a connecting portion 201 with a trapezoidal structure, and the two oblique sides of the connecting portion 201 are connecting edges 210. The connecting portion 201 is inserted into the connecting groove 120 through the end with a smaller width, and the width of the connecting groove 120 gradually decreases along the insertion direction of the connecting portion 201 to match the connecting portion 201.

[0072] That is, on the housing 100, the two connecting grooves 120 surround a trapezoidal fixing area that matches the shape of the connecting portion 201. When assembling the connecting plate 200, the end of the connecting portion 201 with a smaller width will first enter the end of the trapezoidal fixing area with a larger width. In this process, the two connecting edges 210 will not contact the connecting groove 120 at first. Only when the connecting plate 200 moves a certain distance, the connecting edges 210 will start to contact the connecting groove 120. In this way, during the assembly of the connecting plate 200, the friction distance between the connecting plate 200 and the connecting groove 120 is reduced, thereby improving the cutting of the interference material on the groove wall of the connecting groove 120 by the connecting plate 200. In addition, the structure is simple, easy to process, and the difficulty of assembling the connecting plate 200 and the housing 100 is reduced.

[0073] Optionally, the difference between the maximum width b6 and the minimum width b7 of the connecting portion 201 is greater than or equal to 0.1 mm. Fig.10In this embodiment, the connecting edge 210 includes two parallel straight sections 2101 and an inclined section 2102 connecting the two straight sections 2101, and a plurality of glue grooves 214 are provided on the inclined section 2102. Such a configuration is convenient for processing, and when processing by stamping, it is beneficial to improve the life of the mold.

[0074] Embodiment 3

[0075] Since the connecting plate 200 is generally manufactured by a stamping process, the stamping process in a single direction will produce collapsed angles, resulting in a collapsed angle gap between the connecting plate 200 and the connecting groove 120. The existence of this gap provides space for the connecting plate 200 to deflect in position due to high temperature, which will affect the working stability of the bimetallic strip 10 on the connecting plate 200.

[0076] Based on the above problems, the present embodiment provides a connection structure between a connecting plate and a housing, which can improve the angle collapse problem of the connecting plate 200 and improve the integrity of the connection between the connecting plate 200 and the housing 100 .

[0077] The connection structure between the connecting plate and the housing provided in this embodiment is substantially the same as that of the first or second embodiment, and is only improved on the basis of the first or second embodiment. Therefore, only the differences between the two are described here, and the same structure between this embodiment and the first or second embodiment is not repeated here. In this embodiment, the same or corresponding technical features as those of the first or second embodiment are marked with the same reference numerals.

[0078] Specifically, Fig.11 As shown, in this embodiment, at least two notches 230 are provided on each connecting edge 210, and the notches 230 on the two connecting edges 210 are arranged one by one to divide the connecting plate 200 into a plurality of stamping parts, and the plurality of stamping parts are processed by positive and negative stamping. Through the processing method of positive and negative stamping, different collapse directions are formed, so that on the same connecting surface of the connecting edge 210, such as on the first connecting surface 211, at least one section or two sections can ensure close contact with the groove wall of the connecting groove 120, thereby improving the tightness of the assembly of the connecting plate 200 and the connecting groove 120 and reducing the risk of position displacement of the connecting plate 200.

[0079] Optionally, two notches 230 may be provided on each connecting edge 210. In this way, the connecting plate 200 can be divided into three stamping parts. Of course, the number of notches 230 on the connecting edge 210 may also be set to other numbers, according to actual needs.

[0080] It is understandable that the adhesive groove 214 can be normally formed in the portion of the connecting edge 210 where the notch 230 is not provided.

[0081] Embodiment 4

[0082] This embodiment provides a method for connecting a connecting plate and a housing, which is applied to the connection structure between the connecting plate and the housing provided in Embodiment 1, Embodiment 2 or Embodiment 3. Using this method for connecting a connecting plate and a housing can realize the integration of the connecting plate 200 and the housing 100, thereby improving the reliability of the overload protection of the circuit breaker.

[0083] Specifically, Fig.12 As shown, the method for connecting the connecting plate and the housing includes the following steps:

[0084] S100, preparing the connecting plate 200 and the housing 100;

[0085] S200, coating a connecting agent 300 on at least one of the first connecting surface 211, the second connecting surface 212, and the third connecting surface 213 of the connecting edge 210;

[0086] S300, aligning the two connecting edges 210 of the connecting plate 200 with the openings of the two connecting grooves 120 respectively, and inserting the two connecting grooves 120;

[0087] S400, curing the connecting agent 300.

[0088] By coating the connecting agent 300 on the first connecting surface 211, the second connecting surface 212 and the third connecting surface 213 of the connecting edge 210, on the one hand, the bonding area between the connecting plate 200 and the connecting groove 120 is increased, thereby improving the bonding reliability between the connecting plate 200 and the connecting groove 120; on the other hand, in the process of inserting the connecting plate 200, the excess connecting agent 300 can be squeezed into the glue groove 214 to ensure that the glue groove 214 can be filled with enough connecting agent 300, thereby further ensuring the bonding reliability between the connecting plate 200 and the connecting groove 120, thereby improving the integrity between the connecting plate 200 and the shell 100.

[0089] Furthermore, the coating width of the connecting agent 300 should be guaranteed to cover the glue groove 214, and preferably be larger than the glue groove 214. Fig.13 As shown, taking the scheme that the glue groove 214 is arranged on the second connection surface 212 and penetrates the first connection surface 211 and the third connection surface 213 as an example, the connecting agent 300 can be coated on the first connection surface 211 and the third connection surface 213 of the connecting plate 200, and the width a1 of the connecting agent 300 is greater than the depth b1 of the glue groove 214. Preferably, the difference between the width a1 of the connecting agent 300 and the depth b1 of the glue groove 214 is greater than or equal to 1 mm. Of course, the coating width of the connecting agent 300 cannot be too large to prevent the connecting agent 300 from overflowing from the connection groove 120 and affecting the assembly of other parts in the housing 100.

[0090] It is worth noting that, depending on the material of the connecting agent 300 , the connecting agent 300 can be cured by lighting or curing at room temperature.

[0091] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The connection structure between the connecting plate and the housing is characterized in that: include: A housing (100), wherein an installation space (110) is provided on the housing (100), and connection grooves (120) are provided on two opposite inner side walls of the installation space (110); A connecting plate (200), wherein two opposite connecting edges (210) of the connecting plate (200) are respectively interference-fitted with the two connecting grooves (120), each of the connecting edges (210) comprises a first connecting surface (211), a second connecting surface (212) and a third connecting surface (213) that are matched with the groove wall of the connecting groove (120), and a plurality of glue grooves (214) are provided on at least one of the first connecting surface (211), the second connecting surface (212) and the third connecting surface (213); A connecting agent (300) is arranged in the adhesive groove (214) to bond the connecting plate (200) to the connecting groove (120).

2. The connection structure between the connecting plate and the housing according to claim 1, characterized in that: The second connecting surface (212) connects the first connecting surface (211) and the third connecting surface (213), and a plurality of glue grooves (214) are arranged on the second connecting surface (212), and each of the glue grooves (214) penetrates the first connecting surface (211) and the third connecting surface (213) along the width direction of the second connecting surface (212).

3. The connection structure between the connecting plate and the housing according to claim 1, characterized in that: The second connecting surface (212) connects the first connecting surface (211) and the third connecting surface (213); a plurality of the glue grooves (214) are provided on the first connecting surface (211); and the glue grooves (214) are provided with openings on both the first connecting surface (211) and the second connecting surface (212).

4. The connection structure between the connecting plate and the housing according to claim 1, characterized in that: The second connecting surface (212) connects the first connecting surface (211) and the third connecting surface (213); a plurality of the glue grooves (214) are provided on the third connecting surface (213); and the glue grooves (214) are provided with openings on both the third connecting surface (213) and the second connecting surface (212).

5. The connection structure between the connecting plate and the housing according to claim 1, characterized in that: The plurality of glue grooves (214) are arranged at equal intervals along the length direction of the connecting edge (210).

6. The connection structure between the connecting plate and the housing according to claim 1, characterized in that: The connecting plate (200) comprises a connecting portion (201) in a trapezoidal structure, the two oblique sides of the connecting portion (201) being the connecting edges (210), the connecting portion (201) being inserted into the connecting groove (120) through an end with a smaller width, and the width of the connecting groove (120) gradually decreases along the direction in which the connecting portion (201) is inserted so as to match the connecting portion (201).

7. The connection structure between the connecting plate and the housing according to claim 1, characterized in that: The connecting edge (210) comprises two parallel straight sections (2101) and an inclined section (2102) connecting the two straight sections (2101), and a plurality of glue grooves (214) are provided on the inclined section (2102).

8. The connection structure between the connecting plate and the housing according to claim 1, characterized in that: A limiting boss (130) is provided at the tail end of the connection groove (120), and a supporting inclined surface (240) is provided at one end of each connection edge (210) on the connecting plate (200), and the supporting inclined surface (240) is in contact with the limiting boss (130).

9. The connection structure between the connecting plate and the housing according to any one of claims 1 to 8, characterized in that: Each of the connecting edges (210) is provided with at least two notches (230), and the notches (230) on the two connecting edges (210) are arranged in a one-to-one correspondence so as to divide the connecting plate (200) into a plurality of stamping parts, and the plurality of stamping parts are processed by positive and negative stamping.

10. A method for connecting a connecting plate to a housing, applied to the connecting structure of a connecting plate to a housing according to any one of claims 1 to 9, characterized in that: The method for connecting the connecting plate and the housing comprises: Preparing a connecting plate (200) and a housing (100); Applying a connecting agent (300) on at least one of the first connecting surface (211), the second connecting surface (212), and the third connecting surface (213) of the connecting edge (210); The two connecting edges (210) of the connecting plate (200) are respectively aligned with the openings of the two connecting grooves (120), and inserted into the two connecting grooves (120); The connecting agent is cured (300).

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