Short-circuit prevention connection terminal and connector

Abstract

This utility model provides a short-circuit protection connection terminal and connector. The short-circuit protection connection terminal includes a wire connector, a protective sleeve assembly, and a limiting and fixing assembly. The protective sleeve assembly is sleeved on the outside of the wire connector and covers the exposed conductive part of the wire connector. The limiting and fixing assembly is fixed around the outer surface of the protective sleeve assembly adjacent to the wire harness part of the wire connector, so that the wire connector is covered and fixed inside the protective sleeve assembly. This structure forms a complete protective structure by covering the exposed conductive part of the wire connector with the protective sleeve assembly and connecting the protective sleeve assembly and the wire connector with the limiting and fixing assembly. Without changing the existing terminal and wire harness structure, the safety of the structure is improved, and the risk of short circuit due to accidental contact during installation and disassembly is effectively reduced, thereby enhancing the stability of the short-circuit protection connection terminal.

Description

Technical Field

[0001] This disclosure relates to the technical field of connector protection, and in particular to a short-circuit protection connection terminal and connector. Background Technology

[0002] With the rapid development of industry, wire harness terminals play a crucial role in the connection of electronic and electrical equipment, and are widely used in many fields such as automobile manufacturing, aerospace, and home appliances. Especially in the field of portable energy storage products, high-current overcurrent connection wire harness terminals still mostly follow the standards or designs of traditional electrical appliances.

[0003] However, existing wire harness terminal designs have the following significant problems: To ensure stable overcurrent and good heat dissipation for high-current terminals, additional sheaths are typically not added to the wire harness terminals, leaving the conductive parts of the terminals exposed during product use, thus posing a safety hazard of contact short circuits. Specifically, for example... Figure 5 As shown, due to the lack of protective sleeves, when the product needs to be installed or repaired, if the wiring harness terminals are not adequately protected, they are prone to contacting other electrical components during operation, which can lead to short circuits or even arcing. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a short-circuit protection connection terminal and connector with a fire-retardant silicone protective sleeve that can prevent accidental contact that could lead to short circuits and arcing.

[0005] The purpose of this disclosure is achieved through the following technical solution:

[0006] A short-circuit protection connection terminal includes a wire connector, a protective sleeve assembly, and a limiting and fixing assembly. The wire connector is used to connect to a PCB board. The protective sleeve assembly is sleeved on the outside of the wire connector and covers the exposed conductive part of the wire connector. The exposed conductive part of the wire connector is electrically connected to the terminal connection position of the PCB board.

[0007] The limiting and fixing component is fixed around the outer surface of the wire harness portion of the protective sleeve assembly adjacent to the wire connector, so that the wire connector is covered and fixed inside the protective sleeve assembly.

[0008] In one embodiment, the protective sleeve assembly includes a wire harness fixing member and a terminal protection sleeve. The wire harness fixing member is connected to the terminal protection sleeve. The wire harness fixing member has a wire through hole. The terminal protection sleeve has a terminal receiving cavity. The wire through hole communicates with the terminal receiving cavity. The wire connector includes a connecting wire and a fixed terminal. The connecting wire is electrically connected to the fixed terminal. The connecting wire passes through the wire through hole. The fixed terminal is disposed in the terminal receiving cavity.

[0009] In one embodiment, a limiting groove is formed on the outer peripheral wall of the wire harness fixing member, and the limiting fixing component is fixed around the limiting groove.

[0010] In one embodiment, the limiting and fixing component includes at least one winding fastener wound around the limiting groove.

[0011] In one embodiment, the wire harness fixing member is further provided with an elastic adapter groove, the opening direction of the elastic adapter groove is the same as the opening direction of the wire through hole, and the elastic adapter groove is connected to the wire through hole.

[0012] In one embodiment, the diameter of the wire through-hole is greater than or equal to the diameter of the connecting wire.

[0013] In one embodiment, the fixed terminal has a fastening through hole that communicates with the terminal receiving cavity, and the limiting and fixing assembly further includes a threaded fastener that passes through the terminal receiving cavity and the fastening through hole.

[0014] In one embodiment, the terminal guard is vertically connected to the outer side of the wire harness fixing member.

[0015] In one embodiment, the limiting and fixing component is at least one of a self-locking cable tie or an adjustable cable tie.

[0016] This application also provides a connector including the short-circuit protection connection terminal as described in any embodiment.

[0017] Compared with the prior art, this disclosure has at least the following advantages:

[0018] 1. The aforementioned short-circuit protection connection terminal is fitted onto the exposed conductive part of the wired connector by a protective sleeve assembly, and then fixed to the wired connector by a limiting and fixing assembly to form a complete protective structure. This effectively reduces the risk of short circuit and arcing caused by accidental contact during the installation and disassembly of the short-circuit protection connection terminal without changing the existing terminal and wire harness structure, thereby enhancing the stability and safety of the short-circuit protection connection terminal. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a short-circuit protection connection terminal according to one embodiment;

[0021] Figure 2 for Figure 1 A partial exploded view of the short-circuit protection connection terminals shown;

[0022] Figure 3 for Figure 1 A cross-sectional view of the short-circuit protection connection terminals shown;

[0023] Figure 4 for Figure 1 Another structural schematic diagram of the short-circuit protection connection terminal shown;

[0024] Figure 5 This is a schematic diagram of the existing connection terminal structure.

[0025] Reference numerals: 10-Short circuit protection connection terminal; 100-Wire connector; 110-Connecting wire; 120-Fixing terminal; 1201-Securing through hole; 200-Protective sleeve assembly; 210-Wire harness fixing component; 2101-Wire through hole; 2102-Limiting groove; 2103-Elastic adapter groove; 220-Terminal protective sleeve; 2201-Terminal receiving cavity; 300-Limiting fixing component; 310-Wrapping fastener; 320-Threaded fastener. Detailed Implementation

[0026] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0030] like Figures 1 to 4 As shown, a short-circuit protection connection terminal 10 according to an embodiment of the present disclosure includes a wire connector 100, a protective sleeve assembly 200, and a limiting and fixing assembly 300. The wire connector 100 is used to connect to a PCB board. The protective sleeve assembly 200 is sleeved on the outside of the wire connector 100 and covers the exposed conductive part of the wire connector 100. The exposed conductive part of the wire connector 100 is electrically connected to the terminal connection position of the PCB board.

[0031] The limiting and fixing component 300 is fixed around the outer surface of the wire harness portion of the protective sleeve assembly 200 adjacent to the wire connector 100, so that the wire connector 100 is covered and fixed inside the protective sleeve assembly 200.

[0032] In this embodiment, during the assembly of the short-circuit protection connection terminal 10, the protective sleeve assembly 200 is first placed over the wire connector 100, and the protective sleeve assembly 200 is pushed along the length of the wire harness portion of the wire connector 100 towards the conductive terminal portion of the wire connector 100 until the protective sleeve assembly 200 completely covers the exposed conductive portion of the wire connector 100, achieving physical isolation between the exposed conductive portion and the outside world, thereby preventing the exposed conductive portion of the wire connector 100 from accidentally contacting external objects, and effectively avoiding short circuits and arcing caused by accidental contact. Finally, the limiting and fixing assembly 300 is used to surround and fix the protective sleeve assembly 200 on the outer surface of the wire harness portion adjacent to the wire connector, and the limiting and fixing assembly 300 tightly connects the protective sleeve assembly 200 to the wire connector, so that the protective sleeve assembly 200 firmly wraps around the wire connector 100, thereby ensuring that the wire connector 100 is stably disposed inside the protective sleeve assembly 200.

[0033] The aforementioned short-circuit protection connection terminal 10 is fitted onto the exposed conductive part of the wire connector 100 by a protective sleeve assembly 200, and then fixed to the wire connector 100 by a limiting and fixing assembly 300 to form a complete protective structure. This effectively reduces the risk of short circuit and arcing caused by accidental contact during the installation and disassembly of the short-circuit protection connection terminal 10 without changing the existing terminal and wire harness structure, thereby enhancing the stability and safety of the short-circuit protection connection terminal 10.

[0034] like Figure 2 and Figure 3As shown, in one embodiment, the protective sleeve assembly 200 includes a wire harness fixing member 210 and a terminal protection sleeve 220. The wire harness fixing member 210 is connected to the terminal protection sleeve 220. The wire harness fixing member 210 has a wire through hole 2101. The terminal protection sleeve 220 has a terminal receiving cavity 2201. The wire through hole 2101 communicates with the terminal receiving cavity 2201. The wire connector 100 includes a connecting wire 110 and a fixed terminal 120. The connecting wire 110 is electrically connected to the fixed terminal 120. The connecting wire 110 passes through the wire through hole 2101. The fixed terminal 120 is disposed in the terminal receiving cavity 2201. In this embodiment, the wire through-hole 2101 of the wire harness fixing member 210 provides a channel for the connecting wire 110 to pass through. When the wire connector 100 is installed onto the protective sleeve assembly 200, the connecting wire 110 can smoothly pass through the wire through-hole 2101, effectively limiting the position of the connecting wire 110 and preventing it from shaking or shifting during use, thus ensuring the stability of the connection. Since both the wire harness fixing member 210 and the terminal protection sleeve 220 are made of fire-retardant silicone material, and the terminal receiving cavity 2201 of the terminal protection sleeve 220 provides a space for the fixed terminal 120 and achieves reliable physical isolation from the outside, when the wire connector 100 is subjected to external physical impact and vibration, the terminal receiving cavity 2201 can buffer and protect the fixed terminal 120, preventing damage to the fixed terminal 120 due to collision. Meanwhile, the connection between the wire harness fixing member 210 and the terminal protection kit 220 makes the entire protective sleeve assembly 200 a stable whole, so that the connection part between the connecting wire 110 and the fixed terminal 120 is also completely covered by the protective sleeve assembly 200, thereby preventing the exposed conductive part of the wire connector 100 from contacting the outside world, and further reducing the risk of short circuit of the wire connector 100.

[0035] like Figure 2 and Figure 3As shown, in one embodiment, a limiting groove 2102 is formed on the outer peripheral wall of the wire harness fixing member 210, and the limiting fixing component 300 is fixed around the limiting groove 2102. In this embodiment, when assembling the short-circuit protection connection terminal 10, the operator can align the limiting fixing component 300 with the limiting groove 2102 on the outer peripheral wall of the wire harness fixing member 210 to complete the next assembly work. Since the limiting groove 2102 can provide a clear position indication for the installation of the limiting fixing component 300, the limiting fixing component 300 can be quickly and accurately fixed around the limiting groove 2102. Meanwhile, when the limiting and fixing component 300 surrounds the limiting groove 2102, it will apply a certain pressure to the groove wall of the limiting groove 2102, thereby making the limiting and fixing component 300 and the wire harness fixing component 210 fit tightly together, and generating sufficient friction between the two, effectively preventing the limiting and fixing component 300 from sliding or shifting on the outer peripheral wall of the wire harness fixing component 210, ensuring the stability of the position of the limiting and fixing component 300, and thus making the connection between the protective sleeve component 200 and the wire harness part of the wire connector 100 tighter and more stable.

[0036] like Figure 2 and Figure 3 As shown, in one embodiment, the limiting and fixing component 300 includes at least one winding fastener 310, which is wound and disposed within the limiting groove 2102. In this embodiment, the winding fastener 310 can be one of the following types: self-locking nylon cable ties, slip-on cable ties, or fishbone cable ties. When assembling the short-circuit protection connection terminal 10, the operator can select an appropriate number of winding fasteners 310 for fixing according to actual needs and the requirements for the stability of the connection between the protective sleeve component 200 and the wire harness portion of the wire connector 100. During the process of the winding fastener 310 being wound and fixed in the limiting groove 2102, each winding fastener 310 is tightly fitted against the groove wall of the limiting groove 2102, and the winding remains flat and tight to avoid gaps or loosening. The process of the winding fastener 310 gradually fitting against the two sides of the groove wall of the limiting groove 2102 and the wire harness fixing component 210 generates a force. This allows the wire harness fastener 210 to fit even more tightly against the wire harness portion of the wire connector 100, enhancing the tightness of the connection between the wire connector 100 and the wire harness fastener 210. Simultaneously, each winding fastener 310 exerts force within the limiting groove 2102, collectively securing the protective sleeve assembly 200 and the wire harness portion of the wire connector 100. This effectively prevents relative displacement between the protective sleeve assembly 200 and the wire harness portion of the wire connector 100 due to external forces such as vibration and pulling during normal use.

[0037] like Figure 2 and Figure 3As shown, in one embodiment, the wire harness fixing member 210 is further provided with an elastic adaptation groove 2103. The opening direction of the elastic adaptation groove 2103 is the same as the opening direction of the wire through hole 2101, and the elastic adaptation groove 2103 communicates with the wire through hole 2101. In this embodiment, when the connecting wire 110 of the wire connector 100 is passed through the wire through hole 2101 of the wire harness fixing member 210, the presence of the elastic adaptation groove 2103 gives the wire harness fixing member 210 a certain elastic deformation capability. Since the length extension direction of the elastic adaptation groove 2103 is perpendicular to the cross-section of the wire harness fixing member 210, when the connecting wire 110 is inserted into the wire through hole 2101, the radial compression generated by the contact between the wire harness fixing member 210 and the connecting wire forces the two sides of the elastic adaptation groove 2103 to undergo elastic deformation, thereby better adapting to connecting wires 110 of different thicknesses. For thinner connecting wires 110, the two sides of the elastic adapter groove 2103 contract inward under the fastening pressure of the limiting and fixing component 300, making the contact between the wire through hole 2101 and the connecting wire 110 tighter, effectively preventing the connecting wire 110 from shaking in the wire through hole 2101 and ensuring the stability of the connection. For thicker connecting wires 110, the two sides of the elastic adapter groove 2103 expand outward, providing sufficient space for the connecting wire 110, thereby avoiding the connecting wire 110 being difficult to insert or being damaged by excessive compression due to insufficient space.

[0038] like Figure 2 and Figure 3 As shown, in one embodiment, the diameter of the wire through-hole 2101 is greater than or equal to the diameter of the connecting wire 110. In this embodiment, since the diameter of the wire through-hole 2101 is greater than or equal to the diameter of the connecting wire 110, sufficient space is provided for connecting wires 110 of different thicknesses. Therefore, during the assembly of the short-circuit protection connection terminal, connecting wires 110 of different specifications and sizes can all pass into the wire through-hole 2101 of the wire harness fixing member 210, and under the fastening action of the limiting fixing component 300, the wire harness fixing member 210 can undergo elastic deformation. Specifically, under the radial pressure of the limiting fixing component 300, the two sides of the elastic fitting groove 2103 contract inward, forcing the sidewall of the wire through-hole 2101 to form an interference fit with the connecting wire 110, thereby effectively preventing the connecting wire 110 from shaking in the wire through-hole 2101, thus ensuring the stability of the connection and avoiding problems such as poor contact or short circuit caused by shaking.

[0039] like Figure 2 and Figure 3As shown, in one embodiment, the fixed terminal 120 has a fastening through hole 1201, which communicates with the terminal receiving cavity 2201. The limiting and fixing assembly 300 also includes a threaded fastener 320, which passes through the terminal receiving cavity 2201 and the fastening through hole 1201. In this embodiment, when assembling the short-circuit protection connection terminal 10, the fixed terminal 120 of the wire connector 100 is first placed in the terminal receiving cavity 2201 of the terminal protection kit 220, and the connecting wire 110 passes through the wire through hole 2101 of the wire harness fixing member 210 and is connected to the fixed terminal 120. At this time, the fastening through hole 1201 on the fixed terminal 120 corresponds to the terminal receiving cavity 2201, and since the fastening through hole 1201 communicates with the terminal receiving cavity 2201, the threaded fastener 320 can be smoothly inserted into the fastening through hole 1201 and the terminal receiving cavity 2201. The tightening action of the threaded fastener 320 ensures a tight connection between the fixed terminal 120 and the terminal protection sleeve 220, enhancing the overall securing effect of the protective sleeve assembly 200 on the wire connector 100 and thus guaranteeing the electrical connection stability of the wire connector 100. Simultaneously, the secure fixing of the fixed terminal 120 creates a more stable overall structure between the wire connector 100 and the protective sleeve assembly 200. This further strengthens the coverage and protection of the exposed conductive parts of the wire connector 100 by the protective sleeve assembly 200, effectively preventing accidental contact between the exposed conductive parts and external objects, thereby reducing the risk of short circuits.

[0040] like Figure 2 and Figure 3 As shown, in one embodiment, the terminal protection sleeve 220 is vertically connected to the outer side of the wire harness fixing member 210. In this embodiment, since the terminal protection sleeve 220 is vertically connected to the outer side of the wire harness fixing member 210, and the terminal protection sleeve 220 and the wire harness fixing member 210 are integrally injection molded to form a right-angle connection structure, the vertical connection structure makes the protective sleeve assembly 200 form a compact L-shaped spatial layout. When the wire connector 100 is installed on the PCB board, the connecting wire 110 can be routed vertically along the edge of the PCB board, thereby avoiding interference between the wire harness and other electronic components; at the same time, the three-dimensional covering structure formed by the vertical connection changes the isolation method of the exposed conductive part from a single planar protection to three-dimensional protection, further improving the reliability of the short-circuit protection connection terminal.

[0041] like Figure 2 and Figure 4As shown, in one embodiment, the limiting and fixing component 300 is at least one of a self-locking cable tie or an adjustable cable tie. In this embodiment, during the assembly of the self-locking cable tie, the operator first wraps the self-locking cable tie around the limiting groove 2102 and tightens the cable tie using a one-way toothed buckle structure, making it tightly fit against the groove wall of the limiting groove 2102. Because the toothed buckle design has a one-way locking function, the cable tie cannot be loosened after being tightened, thus forming a permanent fastening, thereby allowing the self-locking cable tie to provide a continuous clamping force, ensuring that there is no relative displacement between the protective sleeve assembly 200 and the wire harness portion of the wire connector 100. Furthermore, since the cable tie cannot be arbitrarily disassembled after being locked, loosening or falling off due to misoperation is avoided, enhancing the reliability of the protective structure. On the other hand, during the assembly of the adjustable cable ties, the adjustable cable ties are fixed in the limiting groove 2102 by a snap-on or clip-on structure. Operators can adjust the tightness of the cable ties multiple times according to actual needs until the ideal tightness is achieved. This allows for fine-tuning of the position of the protective sleeve assembly 200 after installation, making it suitable for scenarios requiring dynamic adjustment of the wire harness layout. Furthermore, since the cable ties can be loosened and re-tightened, maintenance costs are reduced, thereby improving product sustainability. Moreover, for connecting wires 110 of different diameters, optimal fit can be achieved by adjusting the tightness of the cable ties, complementing the deformation capability of the elastic fitting groove 2103.

[0042] This application also provides a connector, including a short-circuit protection connection terminal 10 according to any embodiment. In this embodiment, during the assembly of the short-circuit protection connection terminal 10, it is necessary to perform a pressing operation on the wire connector 100 and the conductive wire harness portion to complete the assembly of the overall structure of the wire connector 100. Next, the protective sleeve assembly 200 is placed on the outside of the wire connector 100, and the protective sleeve assembly 200 is pushed along the length direction of the wire harness portion of the wire connector 100 toward the conductive terminal portion of the wire connector 100 until the protective sleeve assembly 200 completely covers the exposed conductive portion of the wire connector 100, realizing the physical isolation of the exposed conductive portion from the outside world, thereby preventing the exposed conductive portion of the wire connector 100 from accidentally contacting external objects, and thus effectively avoiding short circuits and arcing caused by accidental contact. Finally, the limiting and fixing component 300 is used to surround and fix the outer surface of the protective sleeve assembly 200 adjacent to the conductive wire harness portion, and the limiting and fixing component 300 is used to tightly connect the protective sleeve assembly 200 and the conductive wire harness portion, so that the protective sleeve assembly 200 firmly wraps the wire connector 100, thereby ensuring that the wire connector 100 is stably set inside the protective sleeve assembly 200.

[0043] Compared with the prior art, this disclosure has at least the following advantages:

[0044] 1. The aforementioned short-circuit protection connection terminal 10 is fitted onto the exposed conductive part of the wire connector 100 by a protective sleeve assembly 200, and then fixed to the wire connector 100 by a limiting and fixing assembly 300 to form a complete protective structure. This effectively reduces the risk of short circuit and arcing caused by accidental contact during the installation and disassembly of the short-circuit protection connection terminal 10 without changing the existing terminal and wire harness structure, thereby enhancing the stability and safety of the short-circuit protection connection terminal 10.

[0045] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A short-circuit protection connection terminal, comprising a wire connector for connecting to a PCB board, characterized in that, The short-circuit protection connection terminal also includes a protective sleeve assembly and a limiting and fixing assembly; The protective sleeve assembly is fitted over the outside of the wire connector and covers the exposed conductive part of the wire connector. The exposed conductive part of the wire connector is electrically connected to the terminal connection position of the PCB board. The limiting and fixing component is fixed around the outer surface of the wire harness portion of the protective sleeve assembly adjacent to the wire connector, so that the wire connector is covered and fixed inside the protective sleeve assembly.

2. The short-circuit protection connection terminal according to claim 1, characterized in that, The protective sleeve assembly includes a wire harness fixing component and a terminal protection component. The wire harness fixing component is connected to the terminal protection component. The wire harness fixing component has a wire through hole. The terminal protection component has a terminal receiving cavity. The wire through hole communicates with the terminal receiving cavity. The wire connector includes a connecting wire and a fixed terminal. The connecting wire is electrically connected to the fixed terminal. The connecting wire passes through the wire through hole. The fixed terminal is disposed in the terminal receiving cavity.

3. The short-circuit protection connection terminal according to claim 2, characterized in that, The outer peripheral wall of the wire harness fixing member is provided with a limiting groove, and the limiting fixing component is fixed around the limiting groove.

4. The short-circuit protection connection terminal according to claim 3, characterized in that, The limiting and fixing component includes at least one winding fastener, which is wound and disposed within the limiting groove.

5. The short-circuit protection connection terminal according to claim 2, characterized in that, The wire harness fixing component also has an elastic adapter groove, the opening direction of which is the same as the opening direction of the wire through hole, and the elastic adapter groove is connected to the wire through hole.

6. The short-circuit protection connection terminal according to claim 5, characterized in that, The diameter of the through hole for the conductor is greater than or equal to the diameter of the connecting wire.

7. The short-circuit protection connection terminal according to claim 2, characterized in that, The fixed terminal has a fastening through hole, which is connected to the terminal receiving cavity. The limiting and fixing component also includes a threaded fastener, which is respectively inserted into the terminal receiving cavity and the fastening through hole.

8. The short-circuit protection connection terminal according to claim 2, characterized in that, The terminal protection sleeve is vertically connected to the outer side of the wire harness fixing member.

9. The short-circuit protection connection terminal according to claim 1, characterized in that, The limiting and fixing component is at least one of a self-locking cable tie or an adjustable cable tie.

10. A connector, characterized in that, Includes the short-circuit protection connection terminal as described in any one of claims 1 to 9.

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