Ultrahigh-frequency RFID electronic tag with metal surface

Abstract

The invention provides an ultrahigh-frequency RFID electronic tag with a metal surface, relates to the field of electronic tags, and is characterized in that a toggle block can be pulled to drive a fixed sliding block connected with the toggle block to move due to some actual requirements in the subsequent process of the electronic tag. And along with the movement of the fixed sliding block, one end of the fixed sliding block is separated from the fixed slot, so that the original tight fixed state between the connecting side seat and the protective shell is relieved, conditions are created for the movement of the electronic tag body, and the other group of connecting side seat is matched with the electronic tag body for fixed installation. The problems that the position of the electronic tag may be changed during subsequent use, a fixing part of the electronic tag needs to be detached when the fixed electronic tag needs to be moved, but the electronic tag may be damaged, and subsequent use of the electronic tag is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of electronic tags, and in particular to an ultra-high frequency RFID electronic tag on a metal surface. Background Art

[0002] UHF RFID electronic tags are automatic identification technology tags that use UHF bands for wireless communication. When in the UHF electromagnetic field range generated by the reader, the tag antenna receives the radio frequency signal, which provides energy for the tag chip to activate it. The activated chip processes the instructions issued by the reader, and then transmits the stored relevant information back to the reader through the tag antenna in a wireless radio frequency manner, thereby realizing the identification and information acquisition of the tagged items.

[0003] When using an electronic tag, it is usually fixed in a suitable position before use. The position of the electronic tag may be changed during subsequent use. When the fixed electronic tag needs to be moved, the fixing part of the electronic tag needs to be removed, but this may cause damage to the electronic tag and affect the subsequent use of the electronic tag. Summary of the invention

[0004] The present invention application discloses an ultra-high frequency RFID electronic tag on a metal surface to solve the problem that the position of the electronic tag may be changed during subsequent use as mentioned in the above background technology. When the fixed electronic tag needs to be moved, the fixing part of the electronic tag needs to be disassembled, but this may cause damage to the electronic tag and affect the subsequent use of the electronic tag.

[0005] In a first aspect, the present disclosure provides the purpose and efficacy of an ultra-high frequency RFID electronic tag on a metal surface, which specifically includes: a protective shell, the shape of the protective shell is a rectangular shell structure design, and an installation space is opened on the top of the protective shell; fixed seats are symmetrically installed at both ends of the protective shell; a connecting side seat is installed on one side of the fixed seat; the protective shell includes: a fixed joint, the shape of the fixed joint is a rectangular head structure design, and the number of the fixed joints is set to two, and the fixed joints are symmetrically arranged at both ends of the protective shell; a fixed bracket, the shape of the fixed bracket is an arc-shaped head structure design, and the number of the fixed brackets is set to six, and the fixed brackets are symmetrically arranged on both sides of the protective shell; an electronic tag body, the electronic tag body is fitted inside the installation space of the protective shell; a connecting shell, the shape of the connecting shell is a rectangular shell structure design, and the connecting shell is installed and fixed on the top of the protective shell; a matching joint, the shape of the matching joint is an arc-shaped head structure design, and the number of the matching joints is set to six, and the matching joints are symmetrically arranged on both sides of the connecting shell; the matching joint and the fixing bracket are fixedly connected by fixing screws.

[0006] As a further solution of the present invention, the protective shell also includes: protective pillars, which are shaped like an arc-shaped column structure, and the number of protective pillars is set to eight, and the protective pillars are symmetrically fixed to the protective shell and connect the two sides of the shell; sliding columns, which are shaped like a circular column structure, and the sliding columns are slidably set inside the protective pillars; a spring is installed between the protective pillars and the sliding columns.

[0007] As a further scheme of the present invention, the protective shell also includes: a fixed shell, which is shaped like a rectangular shell structure and is installed at the bottom of the protective shell; a connecting head, which is shaped like a rectangular head structure and is set to four in number, and is symmetrically and integrally arranged on the top of the fixed shell; a matching shell, which is shaped like a rectangular shell structure and is installed on the top of the fixed shell; the matching shell and the connecting head are fixedly connected by fixing screws; the fixed shell and the matching shell are both fitted with metal surfaces on the outside; a limit head, which is shaped like a circular head structure and has a limit groove on the top of the limit head, and is set to four in number, and is symmetrically and integrally arranged on the adjacent sides of the matching shell and the fixed shell; one end of the sliding column is snap-connected with the limit groove of the limit head.

[0008] As a further solution of the present invention, the fixing seat includes: a fixing head, which has a rectangular head structure design and is integrally arranged on one side of the fixing seat; a fixing groove, which has a rectangular groove structure design and is opened on one side of the fixing head; the fixing groove is consistent with the fixing joint, and the fixing head and the fixing joint are fixedly connected by fixing screws.

[0009] As a further solution of the present invention, the fixed seat also includes: an installation slot, which is shaped like a rectangular slot structure and is opened on one side of the fixed seat; a fixed slider, which is shaped like a rectangular block structure and is set to two in number, and the fixed slider is symmetrically slidably arranged inside the fixed seat; a spring is installed between the fixed slider and the fixed seat; a matching slot, which is shaped like a rectangular slot structure and is opened on one side of the fixed slider; a toggle block, which is shaped like a rectangular block structure and is integrally arranged at one end of the top of the fixed slider.

[0010] As a further solution of the present invention, the fixed seat also includes: a limiting slider, which is designed as an L-shaped block structure, and the number of limiting sliders is set to two, and the limiting sliders are symmetrically slidably arranged inside the fixed seat; a spring is installed between the limiting slider and the fixed seat; one end of the limiting slider is consistent with the matching slot.

[0011] As a further solution of the present invention, the connecting side seat includes: a fixed plug block, which is shaped like a rectangular block structure and is integrally arranged on one side of the connecting side seat; the fixed plug block is consistent with the installation slot; a touch groove, which is shaped like a rectangular groove structure and is designed in two in number, and the touch grooves are symmetrically opened at one end of the fixed plug block.

[0012] As a further solution of the present invention, the connecting side seat also includes: a fixed slot, which is shaped like a rectangular slot structure, and the number of the fixed slots is set to two, and the fixed slots are symmetrically opened on both sides of the fixed plug block; the fixed slot coincides with one end of the fixed slider; and a connecting frame, which is integrally arranged on one side of the connecting side seat.

[0013] The ultra-high frequency RFID electronic tag on a metal surface provided by the present invention has the following beneficial effects: When the electronic tag needs to be moved due to some practical needs, such as scene changes, equipment adjustments, etc., the toggle block can be pulled to drive the fixed slider connected to it to move. As the fixed slider moves, one end of it will be disengaged from the fixed slot, so that the originally tight fixation between the connecting side seat and the protective shell will be released, thus creating conditions for the movement of the electronic tag body. Another set of connecting side seats and the electronic tag body are then used to fix the installation, so that we can smoothly adjust the position of the electronic tag body.

[0014] After the electronic tag body is moved, the other connecting side seat is first installed on one side of the fixed seat, and then the fixed plug at one end of the connecting side seat is inserted into the installation slot. During insertion, the trigger slot of the fixed plug interacts with the limiting slider to move the limiting slider, and one end of the limiting slider is disengaged from the matching slot, releasing the restriction on the fixed slider. Then, under the action of the spring, the fixed slider moves and is reinserted into the fixed slot, so that the connecting side seat is firmly fixed to one side of the fixed seat. In this way, the fixed installation process can be completed by inserting the fixed plug. Finally, the electronic tag body is fixed again by inserting the fixing nail into the connecting frame, so that the electronic tag body can be flexibly switched and fixed between two or more connecting side seats. The fixing requirements of different positions can be met by only performing corresponding fixing operations on the connecting side seats.

[0015] When releasing the fixation of the protective shell and the connecting side seat and moving the electronic tag body, accidents may occur. For example, if the electronic tag body accidentally falls, its outermost matching shell and fixed shell will contact the ground and generate collision force. However, the protective shell has a good buffering protection mechanism. One end of its sliding column is engaged with the limit head. When the collision force is transmitted, it can be effectively buffered by the spring between the sliding column and the protective support, thereby protecting the electronic tag body between the protective shell and the connecting shell and reducing the risk of damage caused by falling and collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0017] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0018] In the attached picture: Figure 1 It is a schematic diagram of the overall axial three-dimensional structure of an ultra-high frequency RFID electronic tag on a metal surface according to an embodiment of the present invention.

[0019] Figure 2 The present invention is a schematic diagram of a protective shell structure of an ultra-high frequency RFID electronic tag on a metal surface according to an embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of the disassembled structure of a protective pillar of an ultra-high frequency RFID electronic tag on a metal surface according to an embodiment of the present invention.

[0021] Figure 4 The present invention is a schematic diagram of a fixed housing structure of an ultra-high frequency RFID electronic tag on a metal surface according to an embodiment of the present invention.

[0022] Figure 5 It is a schematic diagram of the internal structure of a fixing seat when a connecting side seat and a fixing seat of an ultra-high frequency RFID electronic tag on a metal surface of an embodiment of the present invention are installed and fixed.

[0023] Figure 6 The present invention is a schematic diagram of the internal structure of a fixing seat when a connecting side seat of an ultra-high frequency RFID electronic tag on a metal surface is not installed in an embodiment of the present invention.

[0024] Figure 7 The present invention is a schematic diagram of a fixed slider structure of an ultra-high frequency RFID electronic tag on a metal surface according to an embodiment of the present invention.

[0025] Figure 8 The invention is a schematic diagram of a connecting side seat structure of an ultra-high frequency RFID electronic tag on a metal surface according to an embodiment of the present invention.

[0026] Reference numerals list 1. Protective shell; 101. Fixed joint; 102. Fixed bracket; 103. Electronic tag body; 104. Connecting shell; 105. Matching joint; 106. Protective pillar; 107. Sliding column; 108. Fixed shell; 109. Connecting head; 110. Matching shell; 111. Limiting head; 2. Fixed seat; 201. Fixed head; 202. Fixed slot; 203. Mounting slot; 204. Fixed slider; 205. Matching slot; 206. Toggle block; 207. Limiting slider; 3. Connecting side seat; 301. Fixed plug block; 302. Trigger slot; 303. Fixed slot; 304. Connecting frame. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0028] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present invention have the same meanings as commonly understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless the embodiments of the present invention clearly define such meanings.

[0029] The words "first", "second" and similar words used in the embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "one", "one" or "the" and similar words do not indicate a quantity limitation, but indicate the existence of at least one. Similarly, the words "include" or "comprise" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. In the following description, the spatial and directional terms such as "upper", "lower", "front", "back", "top", "bottom", "vertical" and "horizontal" may be used to describe the embodiments of the present invention, but it should be understood that these terms are only for the convenience of describing the embodiments shown in the figures, and do not require the actual device to be constructed or operated in a specific orientation. In the following description, the use of terms such as "connect", "couple", "fix" and "attach" may refer to the direct connection between two elements or structures without other elements or structures, or may refer to the indirect connection between two elements or structures through an intermediate element or structure, unless otherwise clearly stated in this article.

[0030] As attached Figure 1 To Attachment Figure 8 As shown: Embodiment: The present invention proposes an ultra-high frequency RFID electronic tag on a metal surface, comprising: a protective shell 1, the protective shell 1 is shaped like a rectangular shell structure design, and an installation space is opened on the top of the protective shell 1; fixed seats 2 are symmetrically installed at both ends of the protective shell 1; a connecting side seat 3 is installed on one side of the fixed seat 2; the protective shell 1 includes: a fixed joint 101, the fixed joint 101 is shaped like a rectangular head structure design, and the number of the fixed joints 101 is set to two, and the fixed joints 101 are symmetrically and integrally arranged at both ends of the protective shell 1; a fixed bracket 102, the fixed bracket 102 is shaped like an arc head structure design, and the number of the fixed bracket 102 is set to six, The fixing bracket 102 is symmetrically arranged on both sides of the protective shell 1; the electronic tag body 103 is arranged in a close fit inside the installation space of the protective shell 1; the connecting shell 104 is designed in a rectangular shell structure, and the connecting shell 104 is installed and fixed on the top of the protective shell 1; the matching joint 105 is designed in an arc-shaped head structure, and the number of the matching joints 105 is set to six, and the matching joints 105 are symmetrically arranged on both sides of the connecting shell 104; the matching joint 105 and the fixing bracket 102 are fixedly connected by fixing screws; the protective pillar 106 is in an arc shape. The protective pillars 106 are symmetrically fixed on both sides of the protective shell 1 and the connecting shell 104; the sliding pillars 107 are shaped like a circular column structure, and the sliding pillars 107 are slidably set inside the protective pillars 106; a spring is installed between the protective pillars 106 and the sliding pillars 107; the fixed shell 108 is shaped like a rectangular shell structure, and the fixed shell 108 is installed at the bottom of the protective shell 1; the connecting head 109 is shaped like a rectangular head structure, and the number of the connecting heads 109 is set to four, and the connecting heads 109 are symmetrically and integrally set on The top of the fixed shell 108; the matching shell 110, the matching shell 110 is shaped like a rectangular shell structure design, and the matching shell 110 is installed and arranged on the top of the fixed shell 108; the matching shell 110 and the connecting head 109 are fixedly connected by fixing screws; the fixed shell 108 and the matching shell 110 are both fitted with metal surfaces on the outside; the limit head 111, the limit head 111 is shaped like a circular head structure design, and a limit groove is provided on the top of the limit head 111. The number of the limit heads 111 is set to four, and the limit heads 111 are symmetrically and integrally arranged on the adjacent side of the matching shell 110 and the fixed shell 108; one end of the sliding column 107 is snap-connected with the limit groove of the limit head 111.

[0031] The fixing seat 2 includes: a fixing head 201, the fixing head 201 is shaped like a rectangular head structure design, and the fixing head 201 is integrally arranged on one side of the fixing seat 2; a fixing groove 202, the fixing groove 202 is shaped like a rectangular groove structure design, and the fixing groove 202 is opened on one side of the fixing head 201; the fixing groove 202 is consistent with the fixing joint 101, and the fixing head 201 and the fixing joint 101 are fixedly connected by fixing screws; an installation slot 203, the installation slot 203 is shaped like a rectangular groove structure design, and the installation slot 203 is opened on one side of the fixing seat 2; a fixing slider 204, the fixing slider 204 is shaped like a rectangular block structure design, and the number of the fixing sliders 204 is set to two, and the fixing sliders 204 are It is symmetrically slidably arranged inside the fixed seat 2; a spring is installed between the fixed slider 204 and the fixed seat 2; a matching slot 205, the matching slot 205 is shaped like a rectangular slot structure design, and the matching slot 205 is opened on one side of the fixed slider 204; a toggle block 206, the toggle block 206 is shaped like a rectangular block structure design, and the toggle block 206 is integrally arranged at one end of the top of the fixed slider 204; a limiting slider 207, the limiting slider 207 is shaped like an L-shaped block structure design, and the number of limiting sliders 207 is set to two, and the limiting sliders 207 are symmetrically slidably arranged inside the fixed seat 2; a spring is installed between the limiting slider 207 and the fixed seat 2; one end of the limiting slider 207 is consistent with the matching slot 205.

[0032] Among them, the connecting side seat 3 includes: a fixed plug block 301, which is designed in the shape of a rectangular block structure, and the fixed plug block 301 is integrally arranged on one side of the connecting side seat 3; the fixed plug block 301 is consistent with the installation slot 203; a touch slot 302, which is designed in the shape of a rectangular slot structure, and the number of the touch slots 302 is set to two, and the touch slots 302 are symmetrically opened at one end of the fixed plug block 301; a fixed slot 303, which is designed in the shape of a rectangular slot structure, and the number of the fixed slots 303 is set to two, and the fixed slots 303 are symmetrically opened on both sides of the fixed plug block 301; the fixed slot 303 is consistent with one end of the fixed slider 204; a connecting frame 304, and the connecting frame 304 is integrally arranged on one side of the connecting side seat 3.

[0033] The specific usage and function of this embodiment: During the use of the UHF RFID electronic tag, the connecting frame 304 is fixed to the position to be marked by inserting the fixing nail, and then it is used in conjunction with the electronic tag body 103 through the reader / writer.

[0034] When the electronic tag needs to be moved later, the toggle block 206 can be pulled, and the toggle block 206 will drive the fixed slider 204 to move, so that one end of the fixed slider 204 will be separated from the fixed slot 303. At this time, the fixation between the connecting side seat 3 and the protective shell 1 is separated, so that the electronic tag body 103 can be moved, and then another connecting side seat 3 is installed to one side of the fixed seat 2, and the fixed plug-in block 301 at one end of the connecting side seat 3 is inserted into the installation slot 203. The trigger groove 302 of the fixed plug-in block 301 will trigger the movement of the limiting slider 207, and one end of the limiting slider 207 will be separated from the matching slot 205. At this time, the limiting The slider 207 releases the restriction on the fixed slider 204, and the fixed slider 204 will move to one side driven by the spring, and one end of the fixed slider 204 will be inserted into the fixed slot 303, so that the connected side seat 3 is fixed to one side of the fixed seat 2, which is convenient for fixing the connected side seat 3, so that the fixed plug 301 at one end of the connected side seat 3 can be inserted into the installation slot 203 for fixed installation, and the electronic tag body 103 is fixed by inserting the fixing nail into the connecting frame 304, so that the electronic tag body 103 can be switched and fixed between two or more connected side seats 3, and only the connected side seat 3 needs to be fixed.

[0035] When the fixation between the protective shell 1 and the connecting side seat 3 is released and the electronic tag body 103 is moved, if the electronic tag body 103 accidentally falls, the outermost matching shell 110 and the fixed shell 108 of the electronic tag body 103 will contact the ground and generate a collision force. One end of the sliding column 107 of the protective shell 1 is engaged with the limit head 111, and the collision force generated by the fall will be buffered by the spring between the sliding column 107 and the protective support 106, thereby protecting the electronic tag body 103 between the protective shell 1 and the connecting shell 104.

[0036] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. An ultra-high frequency RFID electronic tag on a metal surface, characterized in that: include: A protective shell (1), wherein the protective shell (1) is shaped like a rectangular shell structure, and an installation space is provided on the top of the protective shell (1); fixed seats (2) are symmetrically installed at both ends of the protective shell (1); a connecting side seat (3) is installed on one side of the fixed seat (2); the protective shell (1) comprises: a fixed joint (101), wherein the fixed joint (101) is shaped like a rectangular head structure, and the number of the fixed joints (101) is set to two, and the fixed joints (101) are symmetrically arranged at both ends of the protective shell (1); a fixed bracket (102), wherein the fixed bracket (102) is shaped like an arc head structure, and the number of the fixed brackets (102) is set to six, The fixed bracket (102) is symmetrically and integrally arranged on both sides of the protective shell (1); the electronic tag body (103) is arranged in a close fit inside the installation space of the protective shell (1); the connecting shell (104) is shaped like a rectangular shell structure, and the connecting shell (104) is installed and fixedly arranged on the top of the protective shell (1); the matching joint (105) is shaped like an arc-shaped head structure, and the number of the matching joints (105) is set to six, and the matching joints (105) are symmetrically and integrally arranged on both sides of the connecting shell (104); the matching joint (105) and the fixed bracket (102) are fixedly connected by fixing screws.

2. The ultra-high frequency RFID electronic tag on a metal surface as claimed in claim 1, characterized in that: The protective shell (1) further comprises: a protective pillar (106), the protective pillar (106) being in the shape of an arc-shaped pillar structure design, and the number of the protective pillars (106) being set to eight, and the protective pillars (106) being symmetrically fixedly arranged on both sides of the protective shell (1) and the connecting shell (104); a sliding pillar (107), the sliding pillar (107) being in the shape of a circular pillar structure design, and the sliding pillar (107) being slidably arranged inside the protective pillar (106); and a spring being installed between the protective pillar (106) and the sliding pillar (107).

3. The ultra-high frequency RFID electronic tag on a metal surface as claimed in claim 2, characterized in that: The protective shell (1) further comprises: a fixed shell (108), the fixed shell (108) being in the shape of a rectangular shell structure, and the fixed shell (108) being installed at the bottom of the protective shell (1); a connector (109), the connector (109) being in the shape of a rectangular head structure, and the number of the connectors (109) being four, and the connectors (109) being symmetrically and integrally arranged at the top of the fixed shell (108); and a matching shell (110), the matching shell (110) being in the shape of a rectangular shell structure, and the matching shell (110) being installed at the fixed shell (108). 8) top; the matching housing (110) and the connecting head (109) are fixedly connected by fixing screws; the fixed housing (108) and the matching housing (110) are both provided with metal surfaces on the outside; a limit head (111), the limit head (111) is in the shape of a circular head structure design, a limit slot is provided on the top of the limit head (111), the number of the limit heads (111) is set to four, and the limit heads (111) are symmetrically arranged in one piece on the adjacent side of the matching housing (110) and the fixed housing (108); one end of the sliding column (107) is snap-fitted and connected with the limit slot of the limit head (111).

4. The ultra-high frequency RFID electronic tag on a metal surface as claimed in claim 1, characterized in that: The fixing seat (2) comprises: a fixing head (201), the fixing head (201) being in the shape of a rectangular head structure design, and the fixing head (201) being integrally arranged on one side of the fixing seat (2); a fixing groove (202), the fixing groove (202) being in the shape of a rectangular groove structure design, and the fixing groove (202) being arranged on one side of the fixing head (201); the fixing groove (202) being consistent with the fixing joint (101), and the fixing head (201) and the fixing joint (101) being fixedly connected by fixing screws.

5. The ultra-high frequency RFID electronic tag on a metal surface as claimed in claim 4, characterized in that: The fixing seat (2) further comprises: an installation slot (203), the installation slot (203) being shaped like a rectangular slot structure and being opened on one side of the fixing seat (2); a fixing slider (204), the fixing slider (204) being shaped like a rectangular block structure and being provided with two fixing sliders (204), and the fixing sliders (204) being symmetrically slidably arranged inside the fixing seat (2); a spring being installed between the fixing slider (204) and the fixing seat (2); a matching slot (205), the matching slot (205) being shaped like a rectangular slot structure and being opened on one side of the fixing slider (204); and a toggle block (206), the toggle block (206) being shaped like a rectangular block structure and being integrally arranged at one end of the top of the fixing slider (204).

6. The ultra-high frequency RFID electronic tag on a metal surface as claimed in claim 5, characterized in that: The fixing seat (2) further comprises: a limiting slider (207), the limiting slider (207) being in the form of an L-shaped block structure, the number of the limiting sliders (207) being set to two, the limiting sliders (207) being symmetrically slidably arranged inside the fixing seat (2); a spring being installed between the limiting slider (207) and the fixing seat (2); and one end of the limiting slider (207) being matched with the matching slot (205).

7. The ultra-high frequency RFID electronic tag on a metal surface as claimed in claim 1, characterized in that: The connecting side seat (3) comprises: a fixed plug block (301) having a rectangular block structure design and being integrally arranged on one side of the connecting side seat (3); the fixed plug block (301) being matched with the installation slot (203); and a touch slot (302) having a rectangular slot structure design and being provided with two touch slots (302) symmetrically arranged at one end of the fixed plug block (301).

8. The ultra-high frequency RFID electronic tag on a metal surface as claimed in claim 7, characterized in that: The connecting side seat (3) further comprises: a fixing slot (303) having a rectangular slot structure, and the number of the fixing slots (303) is set to two, and the fixing slots (303) are symmetrically arranged on both sides of the fixing plug block (301); the fixing slot (303) is matched with one end of the fixing slider (204); and a connecting frame (304), the connecting frame (304) being integrally arranged on one side of the connecting side seat (3).

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