LED lamp strip vertical connector

Abstract

The utility model discloses an LED lamp strip vertical connector which comprises a first connecting part used for being connected with a lamp strip or a wire, a second connecting part used for being connected with the lamp strip and a connecting upper shell used for being connected with the first connecting part and the second connecting part. The lamp strip or the wire connected with the first connecting part is perpendicular to the lamp strip connected with the second connecting part, a hardware contact piece is arranged in the connecting upper shell, one end of the hardware contact piece is inserted into the first connecting part and makes contact with the lamp strip or the wire connected with the first connecting part, and the other end of the hardware contact piece makes contact with the lamp strip or the wire connected with the second connecting part. And the other end of the hardware contact piece is inserted into the second connecting part and is in contact with the lamp strip connected with the second connecting part. According to the utility model, the difficulty and the cost of production and manufacturing can be reduced, and the connection of the lead and the lamp strip or two lamp strips in the vertical direction is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, and in particular to a vertical connector for an LED light strip. Background Art

[0002] LED light strips are widely used for decorative lighting in automotive applications, signage, advertising signs, wine cabinets, jewelry cabinets, entertainment venues, and path and outline markings. LED light strips combine different LED colors to create stunning visual effects. LED light strips require LED light strip connectors to connect them. These connectors primarily connect and transmit power and signals between different LED light strips.

[0003] The Chinese utility model patent document with authorization publication number CN209418857U discloses an extruded solid light strip connector, comprising a wire, a copper hardware housing, and a solid light strip. The wire, copper hardware housing, and solid light strip are sequentially connected to form a complete extruded solid light strip connector. The copper hardware housing comprises a lower card cover and an upper card cover, which is locked to the upper end of the lower card cover via a snap assembly. The wire and the lower card cover are integrally connected. The upper card cover has a solid light strip groove formed inside, which is used to place and secure the solid light strip. This extruded solid light strip connector is easy to assemble and can effectively prevent water seepage and leakage in the open air and in rain, thereby improving product safety.

[0004] However, the aforementioned extruded solid light strip connector, because the wires are integrally connected to the card cover and lower cover, while this enhances the connector's structural stability and sealing to a certain extent, the integral connection means that the wires and the card cover and lower cover need to be produced simultaneously during the production process, which requires precise mold design and manufacturing processes to ensure a perfect connection between the wires and the housing. This not only increases the complexity and cost of production equipment, but may also lead to longer production cycles and reduced production efficiency. In addition, the extruded solid light strip connector can only connect the wires to the light strip horizontally, not vertically. Utility Model Content

[0005] In order to overcome the problems of high manufacturing difficulty and inability to connect wires and light strips in a vertical direction in the solid light strip connector in the prior art, the utility model provides a vertical connector for LED light strips.

[0006] The technical solution of this utility model is as follows:

[0007] A vertical connector for an LED light strip comprises a first connecting portion for connecting a light strip or a wire, a second connecting portion for connecting the light strip, and a connecting upper shell for connecting the first connecting portion and the second connecting portion, wherein the light strip or wire connected to the first connecting portion and the light strip connected to the second connecting portion are perpendicular to each other, and a hardware contact is provided inside the connecting upper shell, wherein one end of the hardware contact is inserted into the first connecting portion and contacts the light strip or wire connected to the first connecting portion, and the other end of the hardware contact is inserted into the second connecting portion and contacts the light strip connected to the second connecting portion.

[0008] As a preferred solution of the present invention, a wire is integrally formed on one end of the first connecting portion away from the second connecting portion. When the first connecting portion is connected to the connecting upper shell, the end of the hardware contact piece close to the first connecting portion is inserted into the first connecting portion and contacts the wire.

[0009] One end of the second connecting part is provided with a second light strip groove for connecting the light strip, and the second light strip groove is perpendicular to the wire. When the second connecting part is connected to the connecting upper shell, the end of the hardware contact piece close to the second connecting part is inserted into the second light strip groove and contacts the light strip connected to the second light strip groove.

[0010] As a preferred solution of the present invention, both ends of the hardware contact piece are provided with downwardly facing hardware contact parts, a limiting opening for inserting the hardware contact parts is opened on the top of the first connecting part, and the wire is located directly below the limiting opening.

[0011] As a preferred solution of the present invention, the second light strip groove runs through both ends of the second connecting portion.

[0012] As a preferred solution of the present invention, a first light strip groove for connecting a light strip is defined at an end of the first connecting portion away from the second connecting portion. When the first connecting portion is connected to the connecting upper shell, an end of the hardware contact piece closer to the first connecting portion is inserted into the first light strip groove and contacts the light strip connected to the first light strip groove.

[0013] One end of the second connecting part is provided with a second light strip groove for connecting the light strip, and the second light strip groove is perpendicular to the first light strip groove. When the second connecting part is connected to the connecting upper shell, the end of the hardware contact piece close to the second connecting part is inserted into the second light strip groove and contacts the light strip connected to the second light strip groove.

[0014] As a preferred solution of the present invention, the second light strip groove runs through both ends of the second connecting portion.

[0015] As a preferred solution of the present invention, the hardware contact is integrally connected and formed on the inside of the connecting upper shell, and a first boss and a second boss are respectively provided at the two ends of the connecting upper shell corresponding to the hardware contact, and a first opening is provided on the top of the first connecting part to cooperate with the first boss, and a second opening is provided on the top of the second connecting part to cooperate with the second boss.

[0016] As a preferred solution of the present invention, a positioning buckle block is provided at one end of the second connecting part close to the first connecting part, and a positioning buckle groove is provided at one end of the first connecting part close to the second connecting part to cooperate with the positioning buckle block.

[0017] As a preferred solution of the present invention, the first connecting portion and the second connecting portion are respectively fixed to the two inner ends of the connecting upper shell through snap-fit ​​assemblies.

[0018] As a preferred solution of the present invention, first fixing buckles are provided on both sides of one end of the first connecting part close to the second connecting part, first fixing grooves engaged with the first fixing buckles are provided on both sides of one end of the connecting upper shell close to the first connecting part, a second fixing buckle and a guide block are provided on one end of the second connecting part away from the first connecting part, and a second fixing groove engaged with the second fixing buckle and a guide groove matching the guide block are provided on one end of the connecting upper shell close to the second connecting part.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. Using hardware contacts as conductive connectors, when the first connection part and the second connection part are respectively connected to the connection upper shell, the two ends of the hardware contacts can be quickly and stably inserted into the corresponding positions, forming contact with the wire and the light strip or two light strips, achieving fast and efficient electrical connection;

[0021] 2. By providing independent first and second connecting parts to connect the wire to the light strip or two light strips respectively, the difficulty and cost of manufacturing are reduced, so that the connector can flexibly adapt to different specifications and types of light strips (solid light strips or hollow light strips) and wire connection requirements, with better compatibility, convenient replacement of the first and second connecting parts, and can be operated under power;

[0022] 3. By arranging the light strip or wire connected to the first connecting part and the light strip connected to the second connecting part to be perpendicular to each other, it is achieved to connect two light strips or a wire and a light strip in a vertical direction. At the same time, since the second light strip groove runs through both ends of the second connecting part, the light strip can pass through the second light strip groove, so that the wire and the light strip or the two light strips are arranged in an "L" or "T" shape, which can adapt to the needs of various different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the application of the vertical connector for connecting the LED light strip to the light strip in Example 1 of the present utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the vertical connector of the LED light strip in Example 1 of the present utility model;

[0026] Figure 3 This is a schematic structural diagram of the first connecting portion in Example 1 of the present utility model;

[0027] Figure 4 This is a schematic structural diagram of the second connecting portion in Example 1 of the present utility model;

[0028] Figure 5 This is a structural diagram of the second connecting portion in Example 1 of the present utility model from another perspective;

[0029] Figure 6 This is a schematic diagram of the structure of the upper shell connected in Example 1 of the utility model;

[0030] Figure 7 This is a schematic structural diagram of the hardware contact piece in Example 1 of the present utility model;

[0031] Figure 8 This is a schematic diagram of the application of the vertical connector for connecting the LED light strip to the light strip in Example 2 of the present utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the vertical connector of the LED light strip in Example 2 of the present utility model;

[0033] Figure 10 This is a schematic structural diagram of the second connecting portion in Example 2 of the present utility model;

[0034] Figure 11 This is a structural diagram of the second connecting portion from another perspective in Example 2 of the present utility model;

[0035] Figure 12 This is a schematic diagram of the application of the vertical connector for connecting LED light strips in Example 3 of the present utility model;

[0036] Figure 13 This is a schematic diagram of the structure of the vertical connector of the LED light strip in Example 3 of the present utility model;

[0037] Figure 14 This is a structural diagram of the vertical connector of the LED light strip in Example 3 of the present utility model from another perspective;

[0038] Figure 15 This is a schematic structural diagram of the first connecting portion in Example 3 of the present utility model;

[0039] Figure 16 This is a schematic diagram of the application of the vertical connector for connecting LED light strips in Example 4 of the present utility model;

[0040] Figure 17 This is a schematic diagram of the structure of the vertical connector of the LED light strip in Example 4 of the present utility model;

[0041] Figure 18 This is a structural schematic diagram of the vertical connector of the LED light strip in Example 4 of the present utility model from another perspective.

[0042] In the figure,

[0043] 1. First connecting part; 101. Limit opening; 102. First opening; 103. Positioning buckle slot; 104. First fixing buckle; 105. First light strip slot; 2. Second connecting part; 201. Second light strip slot; 202. Second opening; 203. Positioning buckle block; 204. Second fixing buckle; 205. Guide block; 3. Connecting upper shell; 301. First boss; 302. Second boss; 303. First fixing slot; 304. Second fixing slot; 305. Guide slot; 4. Wire; 5. Light strip; 6. Hardware contact; 601. Hardware contact part. DETAILED DESCRIPTION

[0044] To make the technical problems, technical solutions, and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. It should also be noted that the embodiments described below are intended only to illustrate the present invention and are not intended to limit the present invention.

[0045] It should be noted that the terms "install", "set", "connect", "fix" and the like should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium; they can be internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. The indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the product of the application is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply 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 a limitation on this application. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Example 1

[0046] See also Figure 1-Figure 7 This embodiment provides a vertical connector for an LED light strip, comprising a first connecting portion 1, a second connecting portion 2, and a connecting upper shell 3 for connecting the first connecting portion 1 and the second connecting portion 2. A wire 4 is integrally formed on the end of the first connecting portion 1 away from the second connecting portion 2. A second light strip groove 201 is defined at one end of the second connecting portion 2 for connecting to a light strip 5. The wire 4 connected to the first connecting portion 1 and the light strip 5 connected to the second connecting portion 2 via the second light strip groove 201 are perpendicular to each other. A hardware contact 6 is disposed within the connecting upper shell 3. When the first connecting portion 1 is connected to the connecting upper shell 3, the end of the hardware contact 6 closest to the first connecting portion 1 is inserted into the first connecting portion 1 and contacts the wire 4 connected to the first connecting portion 1. When the second connecting portion 2 is connected to the connecting upper shell 3, the other end of the hardware contact 6 is inserted into the second light strip groove 201 and contacts the light strip 5 connected to the second light strip groove 201, thereby connecting the wire 4 and the light strip 5 in a vertical direction.

[0047] The LED light strip vertical connector of this embodiment uses a hardware contact 6 as a conductive connector. When the first connection part 1 and the second connection part 2 are respectively connected to the connecting upper shell 3, the two ends of the hardware contact 6 can be quickly and stably inserted into the corresponding positions, forming contact with the wire 4 connected to the first connection part 1 and the light strip 5 connected to the second connection part 2, thereby realizing a fast and efficient electrical connection; by providing independent first connection parts 1 and second connection parts 2 to connect the wire 4 and the light strip 5 respectively, the difficulty and cost of production are reduced, so that the connector can flexibly adapt to the connection requirements of light strips 5 of different specifications and types (solid light strips or hollow light strips) and wires 4, with better compatibility, convenient replacement of the first connection part 1 and the second connection part 2, and can be operated under power; by arranging the wire 4 connected to the first connection part 1 and the second light strip groove 201 of the first connection part 1 to be perpendicular to each other, the wire 4 and the light strip 5 in the vertical direction are connected; by forming the first connection part 1 and the wire 4 into one piece, the cumbersome assembly steps between the wire 4 and the connector in the traditional connection method are reduced.

[0048] See also Figure 3 、 Figure 7 In this embodiment, downward-facing hardware contact portions 601 are provided at both ends of the hardware contact member 6. A position-limiting opening 101 is defined at the top of the first connecting portion 1 for insertion of the hardware contact portions 601. The wire 4 is positioned directly below the position-limiting opening 101. The position-limiting opening 101 provides a precise insertion position for the hardware contact portions 601 on the hardware contact member 6. This ensures that during connection between the first connecting portion 1 and the upper connection housing 3, the hardware contact portions 601 can be accurately aligned and inserted into the insulation layer of the wire 4, avoiding poor connection problems caused by misalignment or offset.

[0049] See also Figures 3 to 6In this embodiment, the hardware contact 6 is integrally formed on the interior of the connecting upper shell 3, and a first boss 301 and a second boss 302 are respectively provided at the two ends of the corresponding hardware contact 6 inside the connecting upper shell 3. The top of the first connecting part 1 is provided with a first opening 102 that cooperates with the first boss 301, and the top of the second connecting part 2 is provided with a second opening 202 that cooperates with the second boss 302. After the first connecting part 1 is connected to the connecting upper shell 3, the first boss 301 will be limited in the first opening 102, and the corresponding end of the hardware contact 6 will be inserted into the interior of the first connecting part 1 along the first opening 102 to contact the wire 4. After the second connecting part 2 is connected to the connecting upper shell 3, the second boss 302 will be limited in the second opening 202, and the corresponding end of the hardware contact 6 will be inserted into the interior of the second connecting part 2 along the second opening 202 to contact the light strip 5. The first boss 301 and the second boss 302 cooperate with the first opening 102 and the second opening 202 on the first connecting part 1 and the second connecting part 2 to form an effective waterproof barrier, which can prevent moisture from penetrating into the interior of the connector from the connection, thereby protecting the internal electrical components and connection lines from the influence of the humid environment, improving the waterproof performance of the connector, and at the same time, it can also improve the stability of the connection to a certain extent, and prevent the connecting parts from loosening or falling off due to vibration or external force.

[0050] See also Figures 3 to 5 In this embodiment, a positioning snap block 203 is provided on the end of the second connecting portion 2 proximate to the first connecting portion 1, and a positioning snap slot 103 is provided on the end of the first connecting portion 1 proximate to the second connecting portion 2, which cooperates with the positioning snap block 203. The cooperation between the positioning snap block 203 and the positioning snap slot 103 eliminates the need for users to expend excessive time and effort adjusting the positions of the first and second connecting portions 1 and 2 during the connection operation, thereby improving installation efficiency. After the first and second connecting portions 1 and 2 are positioned using the positioning snap block 203 and the positioning snap slot 103, the connector can be installed by replacing the upper connecting shell 3.

[0051] See also Figure 3 、 Figure 5 、 Figure 6In this embodiment, the first connecting portion 1 and the second connecting portion 2 are respectively secured to the inner ends of the connecting upper shell 3 via a snap assembly. Specifically, first fixing snaps 104 are provided on both sides of the end of the first connecting portion 1 close to the second connecting portion 2, and first fixing slots 303 that engage with the first fixing snaps 104 are provided on both sides of the end of the connecting upper shell 3 close to the first connecting portion 1. A second fixing snap 204 and a guide block 205 are provided on the end of the second connecting portion 2 away from the first connecting portion 1, and a second fixing slot 304 that engages with the second fixing snap 204 and a guide slot 305 that cooperates with the guide block 205 are provided on the end of the connecting upper shell 3 close to the second connecting portion 2. The first connecting portion 1 is engaged with the first fixing slot 303 of the connecting upper shell 3 via the first fixing buckle 104, and the second connecting portion 2 is engaged with the second fixing slot 304 and guide slot 305 of the connecting upper shell 3 via the second fixing buckle 204 and guide block 205. This allows the first connecting portion 1 and the second connecting portion 2 to be quickly installed into the connecting upper shell 3 through a fixed manner and can also be easily removed, greatly improving the installation and maintenance efficiency of the connector. The guide block 205 cooperates with the guide slot 305 to ensure the accuracy of the position of the first connecting portion 1 and the second connecting portion 2 within the connecting upper shell 3, thereby ensuring good contact between the hardware contact 6 and the wire 4 or the light strip 5. Example 2

[0052] See also Figures 8 to 11 This embodiment provides a vertical LED light strip connector. This connector differs from the first embodiment in that a second light strip groove 201 provided on the second connecting portion 2 extends through both ends of the second connecting portion 2. The remaining structural components of the second embodiment are identical to those of the first embodiment. This embodiment's vertical LED light strip connector, by providing a second light strip groove 201 extending through both ends of the second connecting portion 2, allows the light strip 5 connected to the second connecting portion 2 to pass through the second light strip groove 201. This allows the wire 4 and the light strip 5 to form an "L" or "T" shape, adapting to the needs of various scenarios. Example 3

[0053] See also Figures 12 to 15This embodiment provides a vertical connector for LED light strips, comprising a first connecting portion 1, a second connecting portion 2, and a connecting upper shell 3 for connecting the first connecting portion 1 and the second connecting portion 2. The first connecting portion 1 has a first light strip groove 105 for connecting to a light strip 5 at one end away from the second connecting portion 2, and a second light strip groove 201 for connecting to the light strip 5 at one end of the second connecting portion 2. The second light strip groove 201 is perpendicular to the first light strip groove 105. A hardware contact 6 is disposed within the connecting upper shell 3. When the first connecting portion 1 is connected to the connecting upper shell 3, the end of the hardware contact 6 closest to the first connecting portion 1 is inserted into the first light strip groove 105 and contacts the light strip 5 connected to the first light strip groove 105. When the second connecting portion 2 is connected to the connecting upper shell 3, the end of the hardware contact 6 closest to the second connecting portion 2 is inserted into the second light strip groove 201 and contacts the light strip 5 connected to the second light strip groove 201, thereby connecting two light strips 5 in a vertical direction.

[0054] The LED light strip vertical connector of this embodiment uses a hardware contact 6 as a conductive connector. When the first connection part 1 and the second connection part 2 are respectively connected to the connecting upper shell 3, the two ends of the hardware contact 6 can be quickly and stably inserted into the corresponding positions, forming contact with the light strip 5 connected to the first connection part 1 and the light strip 5 connected to the second connection part 2, thereby realizing a fast and efficient electrical connection; by setting an independent first connection part 1 and a second connection part 2 to respectively connect the two light strips 5, the difficulty and cost of production are reduced, so that the connector can flexibly adapt to the connection requirements of light strips 5 of different specifications and types (solid light strips or hollow light strips), has better compatibility, is convenient for replacing the first connection part 1 and the second connection part 2, and can be operated under power; by setting the first light strip groove 105 of the first connection part 1 and the second light strip groove 201 of the first connection part 1 to be perpendicular to each other, the connection of two light strips 5 in the vertical direction is realized. Example 4

[0055] See also Figures 16 to 18 This embodiment provides a vertical LED light strip connector. This embodiment differs from Embodiment 3 in that a second light strip groove 201 provided on the second connecting portion 2 extends through both ends of the second connecting portion 2. The remaining structural components of Embodiment 4 are identical to those of Embodiment 3. This embodiment's vertical LED light strip connector, by providing a second light strip groove 201 extending through both ends of the second connecting portion 2, allows the light strip 5 connected to the second connecting portion 2 to pass through the second light strip groove 201. This allows the light strips 5 to form an "L" or "T" shape, adapting to the needs of various scenarios.

[0056] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

[0057] The above is an exemplary description of the present utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the present utility model patent is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present utility model patent, or the concept and technical solution of the present utility model patent are directly applied to other occasions without improvement, they are all within the scope of protection of the present utility model.

Claims

1. A vertical connector for LED light strips, characterized in that: The device comprises a first connection portion for connecting a light strip or a wire, a second connection portion for connecting the light strip, and a connection upper shell for connecting the first connection portion and the second connection portion, wherein the light strip or the wire connected to the first connection portion and the light strip connected to the second connection portion are perpendicular to each other, and a hardware contact is provided inside the connection upper shell, wherein one end of the hardware contact is inserted into the first connection portion and contacts the light strip or the wire connected to the first connection portion, and the other end of the hardware contact is inserted into the second connection portion and contacts the light strip connected to the second connection portion; The hardware contact is integrally formed on the interior of the connecting upper shell, and a first boss and a second boss are respectively provided on the interior of the connecting upper shell corresponding to the two ends of the hardware contact, a first opening is formed on the top of the first connecting portion to cooperate with the first boss, and a second opening is formed on the top of the second connecting portion to cooperate with the second boss; A positioning buckle block is provided at one end of the second connection portion close to the first connection portion, and a positioning buckle groove matched with the positioning buckle block is provided at one end of the first connection portion close to the second connection portion.

2. The vertical connector for LED light strips according to claim 1, characterized in that: A wire is integrally formed on one end of the first connecting portion away from the second connecting portion. When the first connecting portion is connected to the connecting upper shell, the end of the hardware contact piece close to the first connecting portion is inserted into the first connecting portion and contacts the wire. One end of the second connecting part is provided with a second light strip groove for connecting the light strip, and the second light strip groove is perpendicular to the wire. When the second connecting part is connected to the connecting upper shell, the end of the hardware contact piece close to the second connecting part is inserted into the second light strip groove and contacts the light strip connected to the second light strip groove.

3. The LED light strip vertical connector according to claim 2, characterized in that: Both ends of the hardware contact piece are provided with downwardly facing hardware contact parts, a limiting opening for inserting the hardware contact parts is opened on the top of the first connecting part, and the wire is located directly below the limiting opening.

4. The LED light strip vertical connector according to claim 2, characterized in that: The second light strip groove passes through both ends of the second connecting portion.

5. The LED light strip vertical connector according to claim 1, characterized in that: A first light strip groove for connecting a light strip is defined at one end of the first connecting portion away from the second connecting portion. When the first connecting portion is connected to the connecting upper shell, an end of the hardware contact piece closer to the first connecting portion is inserted into the first light strip groove and contacts the light strip connected to the first light strip groove. One end of the second connecting part is provided with a second light strip groove for connecting the light strip, and the second light strip groove is perpendicular to the first light strip groove. When the second connecting part is connected to the connecting upper shell, the end of the hardware contact piece close to the second connecting part is inserted into the second light strip groove and contacts the light strip connected to the second light strip groove.

6. The LED light strip vertical connector according to claim 5, characterized in that: The second light strip groove passes through both ends of the second connecting portion.

7. The LED light strip vertical connector according to claim 1, characterized in that: The first connecting portion and the second connecting portion are respectively fixed at two inner ends of the connecting upper shell through buckle assemblies.

8. The LED light strip vertical connector according to claim 7, characterized in that: The first connecting part is provided with a first fixing clip on both sides of one end close to the second connecting part, the connecting upper shell is provided with a first fixing slot engaged with the first fixing clip on both sides of one end close to the first connecting part, the second connecting part is provided with a second fixing clip and a guide block on one end away from the first connecting part, and the connecting upper shell is provided with a second fixing slot engaged with the second fixing clip and a guide groove matching the guide block on one end close to the second connecting part.

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