Single-sided coaxial attenuator

Abstract

To provide a coaxial attenuator which can be easily installed even when it is installed on a box-shaped rack and both an input side cable and an output side cable are drawn in the same direction. [Solution] An attenuator (10) having an input side connector (14) and an output side connector (16) exposed to the outside of a case (12), and having an attenuation element (20) in a signal propagation path (18) connecting the input side connector (14) and the output side connector (16) inside the case (12), characterized in that a curved portion is provided in the signal propagation path (18) and both the input side connector (14) and the output side connector (16) are exposed on one side of the case (12).

Description

[Technical field]

[0001] The present invention relates to a coaxial attenuator, and more particularly to a coaxial attenuator that can facilitate wiring when multiple attenuators are arranged closely together. [Background technology]

[0002] A typical coaxial attenuator is disclosed in Patent Document 1. The attenuator disclosed in Patent Document 1 is shown in a simplified form in Fig. 7. That is, the connectors (input connector 3 and output connector 4) exposed from the case 2 containing the attenuation element 5 are arranged on the opposing surfaces of the case 2.

[0003] The attenuator 1 having such a configuration has been actually used in many fields. Therefore, there is no problem with the function itself of attenuating the input signal and outputting it. However, the conventional attenuator 1 has a box-shaped rack 8 as shown in FIG. 8, and when the input side cable 6 and the output side cable 7 are drawn in the same direction, the following problem occurs. That is, since the input side connector 3 and the output side connector 4 are arranged in a straight line, in order to draw both in the same direction, it is necessary to bend either the input side cable 6 or the output side cable 7 by 180 degrees. Since the coaxial cable cannot be bent excessively due to its structure and high frequency characteristics, it requires a considerable space to turn the cable back inside the rack 8, and when the attenuator 1 is fixed to the rack 8, the output side connector 4 cannot be seen from the front side of the rack 8, and the turned-back cable needs to be fixed so as not to be arranged in a messy manner, which increases the labor required for laying. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2022-140004 Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the object of this invention is to provide a coaxial attenuator that can solve the above problems, can be installed in a box-shaped rack, and can be easily installed even when both the input cable and the output cable are pulled out in the same direction. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the single-sided connection type coaxial attenuator of the present invention is a coaxial attenuator in which an input connector and an output connector are exposed to the outside of a case, and which is provided with an attenuation element in a signal propagation path inside the case connecting the input connector and the output connector, and which is characterized in that a curved portion is provided in the signal propagation path, and both the input connector and the output connector are exposed on one side of the case.

[0007] In addition, in the single-sided connection type coaxial attenuator having the above-mentioned characteristics, it is preferable that the case has a rectangular shape in a plan view and at least one side has a bolt hole for fixing. With such a characteristic, the attenuator can be fixed to a rack or the like.

[0008] Furthermore, in the single-sided connection type coaxial attenuator having the above-mentioned characteristics, it is preferable that the bolt holes are provided on a side surface opposite to the side surface on which the input connector and the output connector are exposed. With such a characteristic, it is possible to arrange the input connector and the output connector on the side surface opposite to the fixed surface of the attenuator. Effect of the Invention

[0009] A single-sided connection type coaxial attenuator having the above-mentioned characteristics can maintain good installation properties even when it is installed in a box-shaped rack and both the input cable and the output cable are pulled out in the same direction. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a plan view showing a configuration of an attenuator according to an embodiment. [Diagram 2] FIG. 2 is a front view showing a configuration of an attenuator according to an embodiment. [Diagram 3] FIG. 2 is a right side view showing the configuration of an attenuator according to the embodiment. [Figure 4] FIG. 2 is a left side view showing the configuration of an attenuator according to the embodiment. [Diagram 5] 1 is a perspective view showing a state in which a plurality of attenuators are fixed to a fixed panel that constitutes a rack. FIG. [Figure 6] 1 is a perspective view showing a state in which a plurality of attenuators are arranged on a rack and coaxial cables are connected thereto. [Figure 7] FIG. 1 is a plan view showing a configuration of a conventional attenuator. [Figure 8] FIG. 1 is a perspective view showing a state in which a conventional attenuator is placed on a rack and a coaxial cable is connected thereto. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiment of the single-sided connection type coaxial attenuator of the present invention will be described in detail with reference to the drawings. Note that the embodiment shown below is one of the preferred forms for carrying out the present invention, and even if a part of the configuration is changed, it can be considered as a part of the present invention as long as the effect of the embodiment is achieved.

[0012] [composition] First, the configuration of a single-sided connection type coaxial attenuator according to this embodiment (hereinafter simply referred to as attenuator 10) will be described with reference to Fig. 1 to Fig. 4. In the drawings, Fig. 1 is a plan view of the attenuator according to the embodiment, Fig. 2 is a front view, Fig. 3 is a right side view, and Fig. 4 is a left side view.

[0013] The attenuator 10 according to this embodiment is basically composed of a case 12, an input connector 14, an output connector 16, and an attenuation element 20. The case 12 is an element that protects the attenuation element 20, which will be described in detail later, and also plays a role in releasing heat generated with signal conversion. The case 12 according to this embodiment has a rectangular shape in a plan view and includes heat dissipation fins 12a on the front and back surfaces. An attenuation element housing section 12b is provided in the center of the back surface, and is arranged so that the connection section between the input connector 14 and the output connector 16, which will be described in detail later, is exposed on the side arranged at the longitudinal end. The attenuation element housing section 12b is also provided with a lid 12c that can seal the space in which the attenuation element 20 is arranged.

[0014] Moreover, the case 12 according to the embodiment has bolt holes 12d for fixing on the bottom surface (the surface on which the lid 12c is provided) and the side surface. This allows the attenuator 10 to be fixed to a rack 30 (see FIG. 6) or the like. In the present embodiment, the case 12 has a rectangular shape in plan view as an example, but the external shape of the case is not important as long as it can perform its function. In other words, not only the shape in plan view but also the number and size of the heat dissipation fins 12a can be determined arbitrarily and are not limited to the shapes shown in the drawings.

[0015] The input side connector 14 is disposed on one side surface of the case 12 (a side surface provided at an end in the longitudinal direction in the example shown in FIG. 1), with a portion for connecting the coaxial cable 40 (see FIG. 6) exposed to the outside of the case 12. The output side connector 16 is disposed on the same side surface as the side surface on which the input side connector 14 is disposed, with a portion for connecting the coaxial cable 40 exposed to the outside of the case 12.

[0016] A signal propagation path 18 that electrically connects the input connector 14 and the output connector 16 is provided inside the case 12. The signal propagation path 18 according to this embodiment has a curved portion, and is bent so as to form a substantially U-shape from the input connector 14 to the output connector 16. In other words, the signal propagation path 18 is folded back 180 degrees inside the case 12. With this configuration, it becomes possible to propagate a signal between the input connector 14 and the output connector 16 while providing them on one side surface.

[0017] The attenuation element 20 is an element that attenuates a signal, and may be mainly a resistor or the like. The attenuation element 20 is interposed in the above-mentioned signal propagation path 18, and is disposed in the attenuation element housing portion 12b in the case 12. By providing the attenuation element 20, the signal input from the input connector 14 is attenuated and output from the output connector 16.

[0018] [Actions and Effects] According to the attenuator 10 configured as described above, since both the input side connector 14 and the output side connector 16 are arranged on one side of the case 12, it is possible to pull out the input side coaxial cable 40 (input side cable) and the output side coaxial cable 40 (output side cable) in the same direction without bending them excessively. Therefore, even when the attenuator 10 is installed in a box-shaped rack 30, it is possible to pull out the input side cable and the output side cable in the same direction without bending them excessively. In addition, since there is no need to bend and then fix the coaxial cable 40 (fold it back and then fix it), the installation of the attenuator 10 is also easy.

[0019] [Application example] As shown in Fig. 5, the attenuator 10 configured as described above can be fixed at one side (the left side in the case of Fig. 1 in the example shown in Fig. 5) to a fixed panel 32 constituting a box-shaped rack 30. As shown in Fig. 6, the fixed panel 32 is a part located on the rear surface of the rack 30. Therefore, by fixing one side of the attenuator 10 as shown in Fig. 5, both the input connector 14 and the output connector 16 can be positioned facing the front surface of the rack 30.

[0020] 5, an operator can install the attenuators 10 by arranging the attenuators 10 on the fixed panel 32 and then fixing the fixed panel 32 to the rack 30. In addition, since both the input connector 14 and the output connector 16 are located on the front side of the rack 30, even when the coaxial cable 40 is connected to the attenuator 10 after the attenuator 10 is fixed to the rack 30, the cable connection can be performed with good workability.

[0021] 6 shows only one stage of the fixed panel 32, but it is possible to provide a plurality of fixed panels 32. Therefore, it is possible to arrange a plurality of attenuators 10 on the rack 30 according to the number of fixed panels 32, and the more the number of attenuators 10 increases, the more the structure of the attenuator 10 according to this embodiment contributes to shortening the installation time. [Explanation of symbols]

[0022] 10...attenuator, 12...case, 12a...heat dissipation fin, 12b...attenuation element housing, 12c...lid, 14...input side connector, 16...output side connector, 18...signal propagation path, 20...attenuation element, 30...rack, 32...fixing panel, 40...coaxial cable.

Claims

1. A coaxial attenuator having an input connector and an output connector exposed outside a case, and including an attenuation element in a signal propagation path connecting the input connector and the output connector inside the case, providing a bent portion in the signal propagation path; A single-sided connection type coaxial attenuator, characterized in that both the input side connector and the output side connector are exposed on one side of a case.

2. 2. The single-sided connection type coaxial attenuator according to claim 1, wherein the case has a rectangular shape in a plan view and at least one side surface is provided with a bolt hole for fixing.

3. 3. The single-sided connection type coaxial attenuator according to claim 2, wherein the bolt holes are provided on a side surface opposite to a side surface from which the input connector and the output connector are exposed.

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