Connection device for terminal blocks

Abstract

To provide a connection device that can be fixed to a terminal block regardless of whether or not there is a cover retaining recess. [Solution] A terminal connecting device comprising a connection device main body 110 having a screw connection terminal portion 120, a first fixing device 200 and a second fixing device 201, the first fixing device 200 comprising a first one-side clip 213 having a first one-side clip groove and a first other-side clip 214 having a first other-side clip groove, and the second fixing device 201 comprising a second one-side clip 213 having a second one-side clip groove and a second other-side clip 214 having a second other-side clip groove, the first fixing device 200 and the second fixing device 201 being arranged on either side of a predetermined number of pairs of side partition walls, and the first fixing device 200 and the second fixing device 201 each engaging with a corresponding pair of side partition walls positioned a predetermined number apart, thereby fixing the terminal connecting device to a terminal block.

Description

[Technical field]

[0001] The present invention relates to a terminal block connection device used to electrically connect to the wiring screws of a terminal block in order to measure or inspect the electrical characteristics of equipment etc. connected to the terminal block while it is still connected to the terminal block. [Background technology]

[0002] When measuring or inspecting a device connected via a terminal block, it takes a lot of time to remove the device from the terminal block. For this reason, a terminal block connection device has been known that allows the measurement or inspection to be performed while the device remains connected to the terminal block. An example of this is described in Patent Document 1. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3800334 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above Patent Document 1, a short circuit plate for voltage withstand test is described as a specific example of a terminal block connection device. According to the technical explanation in the above Patent Document 1, an elastic locking piece 2b formed on a short circuit plate body 1 of the short circuit plate for voltage withstand test is locked in a cover locking recess 7 formed in a terminal block 5, thereby fixing the short circuit plate body 1 to the terminal block 5. However, at present, there are few terminal block products that have the shape of the cover locking recess 7. Therefore, when attempting to use the short circuit plate for voltage withstand test described in Patent Document 1, there is a problem that the terminal blocks that can be used are limited to a certain number.

[0005] It is desirable to be able to fix the above-mentioned terminal block connection device to a widely used terminal block. However, there is a major problem that must be solved when simply fixing the terminal connection device to a terminal block. Widely used terminal blocks are designed for use in making electrical connections with electrical devices and the like. It is difficult to say that they are designed with the assumption that they will hold and fix a terminal block connection device for inspection and the like. For this reason, while they have a suitable structure from the viewpoint of achieving electrical insulation, there are problems that must be solved from the viewpoint of holding and fixing a terminal block connection device, such as mechanical strength.

[0006] The object of the present invention is to provide a terminal block connection device that can be fixed to a terminal block regardless of whether or not it has a cover engagement recess, and that can address issues such as not damaging the terminal block during the fixing process. [Means for solving the problem]

[0007] [First invention] The first invention is a terminal connection device fixed to a terminal block, The terminal block includes a central bulkhead having an elongated shape, and a pair of side bulkheads and a pair of wiring screws alternately arranged along the longitudinal direction of the central bulkhead. the pair of side partition walls includes a first partition wall disposed on one side of the central partition wall and a second partition wall disposed on the other side of the central partition wall in a direction perpendicular to the longitudinal direction of the central partition wall, the first partition wall being disposed on one side of the central partition wall and the second partition wall being disposed on the other side of the central partition wall, the wiring screw pair includes a one-side wiring screw arranged on one side of the central partition wall and a other-side wiring screw arranged on the other side of the central partition wall in a direction perpendicular to the longitudinal direction of the central partition wall, with the central partition wall in between, The terminal connecting device includes a connecting device main body having an elongated shape along the longitudinal direction of the central bulkhead of the terminal block, a screw connecting terminal portion for electrically connecting to the one side wiring screw or the other side wiring screw of at least one of the wiring screw pairs of the terminal block, and a first fixing device and a second fixing device for fixing the terminal connecting device to the terminal block, the first fixing device and the second fixing device are provided at positions corresponding to a first side partition wall pair and a second side partition wall pair among the side partition wall pairs arranged in the longitudinal direction of the terminal block, respectively, and a predetermined number of the side partition wall pairs are provided between the first side partition wall pair to which the first fixing device corresponds and the second side partition wall pair to which the second fixing device corresponds; the first fastening device includes a first pair of clips for mating with a corresponding pair of the first side bulkheads; the first clip pair includes a first one-side clip having a first one-side clip groove for fitting into a corresponding one-side partition wall of the first-side partition wall pair, and a first other-side clip having a first other-side clip groove for fitting into a corresponding other-side partition wall of the first-side partition wall pair, the second fastening device includes a second pair of clips for mating with a corresponding pair of the second side bulkheads; the second clip pair includes a second one-side clip having a second one-side clip groove for fitting into a corresponding one-side partition wall of the second-side partition wall pair, and a second other-side clip having a second other-side clip groove for fitting into a corresponding other-side partition wall of the second-side partition wall pair. The terminal connecting device is characterized in that

[0008] [Second Invention] The second invention is the terminal connecting device of the first invention, the first one-side clip groove of the first one-side clip of the first clip pair of the first fastening device and the first other-side clip groove of the first other-side clip of the first clip pair have an elongated shape extending along the direction perpendicular to the longitudinal direction of the central partition wall, and further, the first one-side clip groove and the first other-side clip groove each have a shape with both ends open in the direction perpendicular to the longitudinal direction of the central partition wall, the second one-side clip groove of the second one-side clip of the second clip pair of the second fastening device and the second other-side clip groove of the second other-side clip of the second clip pair of the second fastening device each have an elongated shape extending along the direction perpendicular to the longitudinal direction of the central partition wall, and both ends of the elongated shape are open in the direction perpendicular to the longitudinal direction of the central partition wall; The present invention relates to a terminal connection device.

[0009] [Third Invention] The third aspect of the present invention is the terminal connecting device of the second aspect of the present invention, the terminal block to which the terminal connecting device is fixed is provided with a screw base at a base of the one-side wiring screw and the other-side wiring screw that constitute the wiring screw pair in order to fix the one-side wiring screw and the other-side wiring screw, the first one-side clip groove of the first one-side clip of the first clip pair of the first fixing device and the first other-side clip groove of the first other-side clip of the first clip pair of the first fixing device each have a shape extending toward the screw bases located on both sides of the first side bulkhead pair of the terminal block into which the first clip pair is fitted, the second one-side clip groove of the second one-side clip of the second clip pair of the second fixing device and the second other-side clip groove of the second other-side clip of the second clip pair of the second fixing device each have a shape extending toward the screw bases located on both sides of the second side bulkhead pair of the terminal block into which the second clip pair is fitted, the first one-side clip groove and the first other-side clip groove of the first clip pair, and the second one-side clip groove and the second other-side clip groove of the second clip pair each have a non-pressurized portion having a width L2 wider than a thickness L18 of the side partition wall pair in the longitudinal direction on a side closer to the connection device main body that is a root side of the first one-side clip groove and the first other-side clip groove, and on a side closer to the connection device main body that is a root side of the second one-side clip groove and the second other-side clip groove, The first one-side clip groove and the first other-side clip groove of the first clip pair, and the second one-side clip groove and the second other-side clip groove of the second clip pair each have a fitting portion having a width L3 narrower than the thickness L18 of the side bulkhead pair on a side farther from the connection device body than the non-pressurizing portion, The present invention relates to a terminal connection device.

[0010] [Fourth Invention] A fourth aspect of the present invention is the terminal connecting device of the third aspect of the present invention, the first one-side clip groove and the first other-side clip groove of the first one-side clip of the first clip pair of the first fastening device, and the second one-side clip groove and the second other-side clip groove of the second one-side clip of the second clip pair of the second fastening device, each have a width at a tip of the groove that is wider than the width at the fitting portion, and the width of each groove gradually narrows from the tip of the groove toward the fitting portion of each groove, The present invention relates to a terminal connection device.

[0011] [Fifth Invention] A fifth aspect of the present invention provides the terminal connecting device of the third aspect of the present invention, the first fixing device and the second fixing device are fixed to the connection device body having an elongated shape in the longitudinal direction at positions spaced apart by the predetermined number of side bulkhead pairs, the connection device body is formed of an electrically conductive metal plate, the screw connection terminal portion for connecting to one of the connection screws of the one side wiring screw or the other side wiring screw of the wiring screw pair present between the first fixing device and the second fixing device is provided on one side or the other side of the connection device main body, a bent portion formed integrally with the connection device body is provided at a connection device body side end portion, which is a side end portion of the connection device body opposite to a side where the screw connection terminal portion is provided, the bent portion is bent at the connection device body side end portion of the connection device body arranged in a position covering the top of the side bulkhead pair, and extends toward a screw base on which a wiring screw is provided, the wiring screw being located on the opposite side to the side on which the screw connection terminal portion is provided in the terminal block. The present invention relates to a terminal connection device.

[0012] [Sixth Invention] A sixth aspect of the present invention is the terminal connecting device of the third aspect of the present invention, the connection device body is a resin connection device body molded from insulating resin, the first fixing device and the second fixing device are provided on the resin connecting device body, separated by the predetermined number of side bulkhead pairs; the screw connection terminal portion is fixed to the resin connection device body in order to electrically connect to a connection target screw, which is one of the one-side wiring screws or the other-side wiring screws of a connection target wiring screw pair that is an electrical connection target among the wiring screw pair, the screw connection terminal portion has a contact end for electrically connecting to the connection target screw, a fixing tube for movably fixing the contact end to the resin connection device body, and a spring acting in a direction to move the contact end away from the resin connection device body, When the terminal connecting device is not fixed to the terminal block, the contact end is located farther from the resin connecting device body than the one-side clip and the other-side clip of the first fixing device and the second fixing device due to the action of the spring, In addition, when the terminal connecting device is fixed to the terminal block, the spring is compressed by the contact end coming into contact with the connection target screw, and the contact end is positioned closer to the resin connecting device body than the tip of the one-side clip and the other-side clip of the first fixing device and the second fixing device. The present invention relates to a terminal connection device. Effect of the Invention

[0013] According to the present invention, it is possible to provide a terminal block connection device that can be fixed to a terminal block regardless of whether or not it has a cover engagement recess, and that can address issues such as not damaging the terminal block during the fixing process. [Brief description of the drawings]

[0014] [Figure 1] 1 is an explanatory diagram illustrating an example of a terminal block for fixing a terminal connecting device to which the present invention is applied; [Diagram 2] 2 is a cross-sectional view of the terminal block shown in FIG. 1 along the line AA. [Diagram 3] 1 is a plan view of a terminal connecting device according to an embodiment of the present invention; [Figure 4] 1 is a bottom view of a terminal connecting device according to an embodiment of the present invention; [Diagram 5] 2 is an explanatory diagram illustrating a state in which a terminal connecting device according to an embodiment of the present invention is fixed to the terminal block shown in FIG. [Figure 6] FIG. 6 is a cross-sectional view of the explanatory diagram shown in FIG. 5 . [Figure 7] 4 is a bottom view of a fixing device provided in the terminal connecting device. FIG. [Figure 8] 8 is a cross-sectional view of the fixing device shown in FIG. 7 along CC line. [Figure 9] 13 is an explanatory view illustrating the relationship between the other-side clip of the fixing device base and the other-side partition wall in a state in which the terminal connecting device is fixed to the terminal block. FIG. [Figure 10] FIG. 13 is a plan view of another embodiment of a terminal connecting device. [Figure 11]FIG. 13 is a bottom view of another embodiment of a terminal connecting device. [Figure 12] 13A and 13B are explanatory diagrams illustrating a screw connection terminal portion according to another embodiment. [Figure 13] FIG. 4 is an explanatory diagram illustrating a state in which the terminal connecting device is fixed to a terminal block. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] In the embodiments described below, components with the same reference numerals are basically the same in structure, function in the same way, and provide substantially the same effects. In order to avoid repetitive explanations, the explanations of the components with the same reference numerals may be omitted.

[0016] 1. Description of the terminal block 10 to which the terminal connecting device 100 according to the present invention can be fixed An example of a terminal block 10 to which a terminal connecting device 100 according to an embodiment of the present invention is fixed is shown in Fig. 1. A cross section of Fig. 1 taken along the line AA is shown in Fig. 2. The terminal block 10 is provided with a large number of wiring screw pairs 22, each having a first wiring screw 25 and a second wiring screw 29, along the longitudinal direction V. A pair of side bulkheads 16 is provided between adjacent wiring screw pairs 22 for electrical insulation between adjacent wiring screw pairs 22. As shown in Fig. 2, one side wiring 26 and other side wiring 30 are connected to the first side wiring screw 25 and other side wiring screw 29 constituting the wiring screw pair 22, respectively, but the first side wiring 26 and other side wiring 30 are omitted in Fig. 1 to avoid complication in the illustration.

[0017] The cross-sectional structure of the terminal block 10 shown in FIG. 2 is an example, and the terminal block 10 may have another structure. If the terminal block 10 has the side bulkhead pair 16 described below, it can be fixed by the terminal connection device 100 to which the present invention is applied. The terminal block 10 has a terminal block base 12 at the bottom, and further has a screw base 23 having a one-side wiring screw base 24 and a other-side wiring screw base 28 for fixing the one-side wiring screw 25 and the other-side wiring screw 29. In the example shown in FIG. 1, a short-circuit metal plate 27 for electrically short-circuiting the one-side wiring screw 25 and the other-side wiring screw 29 is provided inside the screw base 23. The one-side wiring 26 is fixed to the one-side wiring screw 25, and the other-side wiring 30 is connected to the other-side wiring screw 29. An electric device (not shown) is connected to both or either of the one-side wiring 26 and the other-side wiring 30. By applying a predetermined voltage to the one-side wiring screw 25 or the other-side wiring screw 29 while the one-side wiring 26 or the other-side wiring 30 is connected to the electrical equipment, etc., electrical inspections can be performed on the electrical equipment, etc. not shown.

[0018] A central partition wall 14 having a width T is formed in the center of the one-side wiring screw 25 and the other-side wiring screw 29 along the longitudinal direction V of the terminal block 10. The central partition wall 14 acts to reinforce the entire terminal block 10, and also has the function of reinforcing the side partition wall pair 16. For this reason, the side partition wall pair 16 has a structure in which the portions close to the central partition wall 14 and the portions close to the one-side wiring screw base 24 and the other-side wiring screw base 28 have higher mechanical strength than the one-side partition wall upper end 19 and the other-side partition wall upper end 21.

[0019] The primary purpose of the side bulkhead pair 16 of the terminal block 10 is to electrically insulate the adjacent wiring screw pairs 22, and is not to hold and fix the terminal connection device 100. Therefore, the side bulkhead pair 16 itself is thin. If the thickness of the side bulkhead pair 16 in the longitudinal direction V is increased, the mechanical strength increases, but the distance between the adjacent wiring screw pairs 22 increases, and the terminal block 10 becomes longer than necessary in the longitudinal direction V. The side bulkhead pair 16 actually used has a thin shape in the longitudinal direction V, and may be damaged if a force in the longitudinal direction V is applied to the side bulkhead pair 16. Similarly, the side bulkhead pair 16 may be damaged if a force in a torsional direction is applied to the side bulkhead pair 16. In the pair of side bulkheads 16, the ends on one or the other side of the pair of side bulkheads 16, which are near the upper end 19 of the one bulkhead or the upper end 21 of the other bulkhead, or which are farther from the central bulkhead 14, are more susceptible to damage than the positions closer to the screw base 23.

[0020] 2. Description of the terminal connection device 100 according to one embodiment of the present invention Fig. 3 is a plan view of a terminal connecting device 100 according to an embodiment of the present invention, and Fig. 4 is a bottom view of the terminal connecting device 100 shown in Fig. 3. The bottom view of Fig. 4 shows a state in which one side and the other side are reversed with respect to the plan view shown in Fig. 3, that is, a state in which Fig. 3 is rotated half a turn around its longitudinal direction V.

[0021] In these figures, the terminal connection device 100 includes a connection device body 110, a number of screw connection terminal parts 120, a bent part 113, and two external connection terminals 140 arranged on both sides in the longitudinal direction of the connection device body 110. Furthermore, the connection device body 110 is provided with a first fixing device 200, a second fixing device 201, and a third fixing device 202 for fixing the terminal connection device 100 to the terminal block 10. These are just examples, and there may be two fixing devices, the first fixing device 200 and the second fixing device 201, or the third fixing device 202 may be provided as in this embodiment, or a greater number of fixing devices may be provided. What is important is that there are at least two fixing devices. The fixing devices shown as the first fixing device 200, the second fixing device 201, and the third fixing device 202 will be described below with reference to Figures 7 and 8, but in this embodiment, they have the same structure and shape.

[0022] FIG. 5 shows a state in which the terminal connection device 100 shown in FIG. 3 or FIG. 4 is fixed to the terminal block 10 shown in FIG. 1 or FIG. 2, and FIG. 6 shows a BB cross-sectional view of FIG. 5. The connection device body 110 of the terminal connection device 100, the multiple screw connection terminal parts 120 and multiple external connection terminals 140 arranged along the longitudinal direction V of the terminal block 10, and the bent part 113 are integrally made of a single metal plate. The metal plate is conductive, and the wiring screw pairs 22 electrically connected by the multiple screw connection terminal parts 120 are at the same potential. In addition, when a voltage is applied to the external connection terminals 140 provided on the connection device body 110, the same voltage is applied to the wiring screw pairs 22 electrically connected by the multiple screw connection terminal parts 120.

[0023] The connection device body 110 of the terminal connection device 100 is elongated and extends in the longitudinal direction V of the terminal block 10, and a large number of screw connection terminal parts 120 are provided in the longitudinal direction V at positions corresponding to the one-side wiring screws 25 or the other-side wiring screws 29 constituting the wiring screw pair 22. In this embodiment, as an example, they are provided so as to correspond to the other-side wiring screws 29 of each wiring screw pair 22. Fig. 6 shows the shape of the screw connection terminal parts 120 and also shows the connection state of the screw connection terminal parts 120 to the corresponding other-side wiring screws 29.

[0024] The screw connection terminal portion 120 is required to enter between the adjacent pairs of side bulkheads 16 and to contact the other-side wiring screw 29, and is formed to have a narrow width in the longitudinal direction V. In this embodiment, the one-side clip 213 and the other-side clip 214 of the first fixing device 200, the second fixing device 201, and the third fixing device 202 are engaged with the corresponding pairs of side bulkheads 16, respectively, thereby fixing the terminal connection device 100 to the terminal block 10. Therefore, the member that enters between the adjacent pairs of side bulkheads 16 is not only the screw connection terminal portion 120. When the other-side clip 214 of the first fixing device 200, the second fixing device 201, and the third fixing device 202 are engaged with the corresponding pairs of side bulkheads 16, one of the clips constituting the other-side clip 214 enters between the adjacent pairs of side bulkheads 16 in addition to the corresponding screw connection terminal portion 120. Therefore, when the terminal connection device 100 to which the present invention is applied is fixed to the terminal block 10, the screw connection terminal portion 120 and the clip tip portion 216 or clip tip 217 constituting the other side clip 214 are inserted between the adjacent upper partition walls 16, and the screw connection terminal portion 120 is required to have a width even narrower than the elastic contact piece 3 described in Patent Document 1.

[0025] As will be described below, the connection device main body 110 of the terminal connection device 100 is provided with a first fixing device 200, a second fixing device 201, and a third fixing device 202, and the first fixing device 200, the second fixing device 201, and the third fixing device 202 each have a clip pair 212 including a one-side clip 213 and an other-side clip 214. Furthermore, the one-side clip 213 and the other-side clip 214 each have a one-side clip groove 222 and an other-side clip groove 223, and the one-side partition wall 18 and the other-side partition wall 20 of the corresponding side partition wall pair 16 are inserted into the one-side clip groove 222 and the other-side clip groove 223. In this way, the first fixing device 200, the second fixing device 201, and the third fixing device 202 are fixed to the corresponding side partition wall pair 16, respectively, and the terminal connection device 100 is fixed to the terminal block 10.

[0026] As described above, it is important that the thickness of the side bulkhead pair 16 in the longitudinal direction V is thin and that no force is applied in the longitudinal direction V. If the positional relationship of the one-side clip 213 or the other-side clip 214 between the first fixing device 200, the second fixing device 201, and the third fixing device 202 changes even slightly, a force in the longitudinal direction V will be applied to the side bulkhead pair 16. For this reason, the metal plate constituting the connection device main body 110 must be prevented from warping or deforming. A bent portion 113 is formed on the side opposite to the side on which the screw connection terminal portion 120 of the connection device main body 110 is formed. 6, this bent portion 113 is arranged to cover one-side partition upper end 19 of one-side partition 18 of side partition pair 16 on one side of connection device main body 110, i.e., the side opposite to the side on which screw connection terminal portion 120 is provided, and further extends along one side end of one-side partition 18 toward the side end of one-side wiring screw base 24 to the vicinity of one-side wiring 26. By providing bent portion 113 which bends from connection device main body top surface 114 of connection device main body 110 at connection device main body side end 112 and extends perpendicular to connection device main body top surface 114 in this manner, it is possible to suppress deformation such as warping in connection device main body 110 made of a metal plate.

[0027] In order to improve the effect of suppressing the deformation of the connection device main body 110, it is preferable to increase the ratio of the length of the bent portion 113 along the longitudinal direction V to the length of the connection device main body 110 along the longitudinal direction V. It is also preferable to provide the bent portion 113 near the center of the connection device main body 110 in the longitudinal direction V. Using FIG. 3 as an example, the length L11 of the bent portion 113 along the longitudinal direction V is longer than half the length L10 of the connection device main body 110 along the longitudinal direction V. The bent portion 113 is located approximately in the center within the range of the length along the longitudinal direction V of the connection device main body 110. Therefore, the bent portion 113 has a large suppressing effect on the deformation of the connection device main body 110.

[0028] 3. Description of the state in which the terminal connection device 100 is fixed to the terminal block 10 FIG. 5 shows the state in which the terminal connection device 100 shown in FIG. 3 and FIG. 4 is fixed to the terminal block 10. FIG. 6 shows a BB cross-sectional view of FIG. 5. In these figures, the first fixing device 200, the second fixing device 201, and the third fixing device 202 are fixed to the connection device body 110 of the terminal connection device 100. The method of fixing the first fixing device 200, the second fixing device 201, and the third fixing device 202 to the connection device body 110 does not require a special method, and may be a screw fastening method or a fixing method using an adhesive. In the example of FIG. 5, since the distance between the first fixing device 200 and the third fixing device 202 is long, an example of using three fixing devices, including the third fixing device 202, is described. When actually using the terminal connection device 100, it is important to provide at least two fixing devices. In the embodiment of FIG. 5, it is sufficient to have the first fixing device 200 and the second fixing device 201. To further increase the fixing force, it is advisable to increase the number of fixing devices, for example by providing a third fixing device 202.

[0029] 4. Description of the first fixing device 200, the second fixing device 201, and the third fixing device 202 The first fixing device 200, the second fixing device 201, and the third fixing device 202 have the same shape and the same configuration, and are shown in Figs. 7 and 8. Fig. 7 is a bottom view of the first fixing device 200, and Fig. 8 is a cross-sectional view taken along CC in Fig. 7. The first fixing device 200 will be described as a representative of the first fixing device 200, the second fixing device 201, and the third fixing device 202. The second fixing device 201 and the third fixing device 202 have the same effect. The first fixing device 200 has a one-side clip 213 and an other-side clip 214 for fitting to the one-side partition wall 18 and the other-side partition wall 20 provided on both sides of the central partition wall 14, respectively. The one-side clip 213 and the other-side clip 214 have a one-side clip groove 222 and an other-side clip groove 223, which are elongated grooves extending in a direction perpendicular to the longitudinal direction V.

[0030] As shown in Fig. 1, the pair of side partition walls 16 provided on the terminal block 10 has a first-side partition wall 18 on one side and a second-side partition wall 20 on the other side, sandwiching a central partition wall 14 therebetween. In a state in which the terminal connecting device 100 is fixed to the terminal block 10 as shown in Fig. 5, the first fixing device 200, the second fixing device 201, and the third fixing device 202 fixed to the connecting device main body 110 have a first-side clip 213 and a second-side clip 214, respectively. As shown in Fig. 7, the first-side clip 213 and the second-side clip 214 have a gap therebetween. In a state in which the terminal connecting device 100 is fixed to the terminal block 10, the central partition wall 14 fits into this gap as shown in Fig. 5. The one-side clip 213 and the other-side clip 214 provided on the first fixing device 200 are provided at positions corresponding to the one-side partition 18 and the other-side partition 20 located on either side of the central partition 14, and the one-side clip groove 222 of the one-side clip 213 and the other-side clip groove 223 of the other-side clip 214 have a shape that extends in a perpendicular direction to the longitudinal direction V of the terminal block 10, and both ends of the one-side clip groove 222 and the other-side clip groove 223 are open in the direction perpendicular to the longitudinal direction V.

[0031] 5. Effect of suppressing the application of force to the pair of side bulkheads 16 The connection device body 110 of the terminal connection device 100 is provided with a first fixing device 200 and a second fixing device 201. As described above, the first fixing device 200 and the second fixing device 201 have one-side clips 213 and other-side clips 214. The first fixing device 200 and the second fixing device 201 are provided with a predetermined number of wiring screw pairs 22 and side bulkhead pairs 16 between them, and are attached to the connection device body 110 in a positional relationship spaced a predetermined distance from each other.

[0032] The first fixing device 200 and the second fixing device 201 have one-side clips 213 and other-side clips 214 that fit into the one-side bulkhead 18 and other-side bulkhead 20 that are provided on both sides of the central bulkhead 14 in the terminal block 10, respectively, thereby fixing the terminal connecting device 100 to the terminal block 10. With this structure, the first fixing device 200 itself is unlikely to generate a force in the longitudinal direction V against the corresponding pair of side bulkheads 16. However, the terminal connecting device 100 itself has an elongated shape in the longitudinal direction V. For this reason, the second fixing device 201 is provided in the connecting device main body 110 at a position spaced a predetermined distance from the position of the first fixing device 200. If only the first fixing device 200 is provided, and the second fixing device 201 and the third fixing device 202 are not provided, when a force having a component perpendicular to the longitudinal direction V acts, even if the force is small, a large force acts on the one side partition wall 18 and the other side partition wall 20 of the side partition wall pair 16 due to the principle of leverage. As a result, there is a risk of the side partition wall pair 16 being damaged. However, if the second fixing device 201 or the third fixing device 202 is provided in addition to the first fixing device 200, the increase in force due to the principle of leverage can be suppressed. Therefore, in this embodiment, by providing at least two fixing devices, the first fixing device 200 and the second fixing device 201, it is possible to suppress the application of a torsional force to the mating side partition wall pair 16.

[0033] As described above, in the embodiment to which the present invention is applied, the second fixing device 201 is provided at a position away from the first fixing device 200. The second fixing device 201 has basically the same structure as the first fixing device 200, and has the same action and effect. That is, the one-side clip 213 and the other-side clip 214 of the second fixing device 201 are provided with a space between them for the central partition wall 14 to enter. In this manner, the one-side clip 213 and the other-side clip 214 are provided at a predetermined distance apart in the direction perpendicular to the longitudinal direction V in a positional relationship that utilizes the space for the central partition wall 14. This structure prevents the first fixing device 200 and the second fixing device 201 from moving in a direction that is different from the direction perpendicular to the longitudinal direction V of the central partition wall 14, or from moving in a twisted direction. Therefore, the application of a twisting force or the like to the side partition wall pair 16 used for fixing is prevented, and the possibility of damaging the side partition wall pair 16 is reduced.

[0034] As described above, the one-side clip groove 222 and the other-side clip groove 223 provided in the one-side clip 213 and the other-side clip 214 of the first fixing device 200 and the second fixing device 201 have a long shape in a direction perpendicular to the longitudinal direction V, and both ends of the one-side clip groove 222 and the other-side clip groove 223 are open. Therefore, if it is along a plane perpendicular to the longitudinal direction V, it is possible to tilt, for example, to rotate slightly around the longitudinal direction V. In the work of fixing the terminal connecting device 100 to the terminal block 10 or in the work of removing the terminal connecting device 100 from the terminal block 10, since the structure allows tilting within a predetermined range, workability is improved. Furthermore, since movement in a plane perpendicular to the longitudinal direction V is possible, movement in other directions is suppressed. In FIG. 5, the third fixing device 202 also has the same effect as the first fixing device 200 and the second fixing device 201.

[0035] When the connection device body 110 is long, as described above, the bent portion 113 is provided to prevent warping of the connection device body 110. In addition to this, by providing the third fixing device 202 between the first fixing device 200 and the second fixing device 201, the state of the terminal connection device 100 held by the terminal block 10 can be stabilized. Furthermore, there is an effect of maintaining a good state of electrical connection between each screw connection terminal portion 120 of the connection device body 110 and the corresponding screw.

[0036] 6. Protection of the upper end 19 of one bulkhead and the other bulkhead 20 of the pair of side bulkheads 16 The first clip 213 and the other clip 214 of the first fixing device 200, the second fixing device 201, and the third fixing device 202 of the connection device body 110 of the terminal connection device 100 are fitted into the one-side partition wall 18 and the other-side partition wall 20 of the corresponding side partition wall pair 16, thereby fixing the terminal connection device 100 to the terminal block 10. As described above, the side partition wall pair 16 has a thin shape and low mechanical strength. Nevertheless, the part close to the base of the side partition wall pair 16 is connected to the one-side wiring screw base 24 and the other-side wiring screw base 28, and this structure makes the mechanical strength higher than other parts. However, the one-side partition wall upper end 19 and the other-side partition wall upper end 21 of the side partition wall pair 16 are not reinforced and have low mechanical strength. For this reason, the one-side partition wall upper end 19 and the other-side partition wall upper end 21 shown in FIG. 6 are particularly prone to breakage. A solution for preventing damage to the upper end 19 of the bulkhead on one side and the upper end 21 of the bulkhead on the other side will be described with reference to Figs. 8 and 9. Figs.

[0037] The one-side clip 213 and the other-side clip 214 of the first fastening device 200, the second fastening device 201, and the third fastening device 202 are almost the same in the fitting state with the one-side partition wall 18 and the other-side partition wall 20 of the corresponding side partition wall pair 16, the configuration for that purpose, and the action and effect for preventing damage to the side partition wall pair 16. Therefore, we will avoid explaining them separately, and will explain the one-side clip 213 of the third fastening device 202 and the corresponding one-side partition wall 18 as representatives, and explain the above-mentioned fitting state and the action and effect for preventing damage. Note that Fig. 8 is a cross-sectional view taken along CC in Fig. 7, and Fig. 9 is a cross-sectional view taken along DD in Fig. 5.

[0038] 9, the fixing device base 210 of the third fixing device 202 is fixed to the connection device body 110 of the terminal connecting device 100, and the one-side clip 213 is fixed to the fixing device base 210. The one-side partition walls 18 of the pair of side partition walls 16 arranged at equal intervals are fixed to the one-side wiring screw base 24 and the terminal block base 12. One-side wiring screws 25 are provided between adjacent one-side partition walls 18. When the terminal connecting device 100 is fixed to the terminal block 10, the one-side partition wall 18 corresponding to the one-side clip 213 among the one-side partition walls 18 shown in FIG. 9 enters into the one-side clip groove 222 of the one-side clip 213 fixed to the fixing device base 210, and the one-side clip groove 222 and the corresponding one-side partition wall 18 are fitted together.

[0039] The one-side clip 213 has a clip base 211, on which a one-side clip piece 225 and an other-side clip piece 226 are provided, and the one-side clip piece 225 and the other-side clip piece 226 form a one-side clip groove 222. As shown in Fig. 7, the one-side clip groove 222 spreads in a direction perpendicular to the longitudinal direction V of the central partition 14, and both ends are open. The one-side partition 18 of the side partition pair 16 is inserted into the one-side clip groove 222, and the one-side partition 18 and the one-side clip groove 222 are fitted together.

[0040] The shapes of the one-side clip piece 225 and the other-side clip piece 226 for forming the one-side clip groove 222 and the shape of the formed one-side clip groove 222 will be described in detail with reference to Fig. 8. The one-side clip piece 225 and the other-side clip piece 226 for forming the one-side clip groove 222 are provided in the center of the clip base 211. The one-side clip groove 222 has a length L1 from the clip base 211 to the clip tip 217, and the width of the one-side clip groove 222, which is the length of the one-side clip groove 222 in the longitudinal direction V, is length L2 over a range longer than half of the length L1 from the clip base 211. This length L2 is wider than the thickness L18 of the side bulkhead pair 16 in the longitudinal direction V, as shown in Fig. 9. 9, in the range of half or more of the length L1 from the clip base 211, no force is applied from the one-side clip piece 225 or the other-side clip piece 226 to the one-side partition 18 of the side partition pair 16. In this specification, this is referred to as a non-pressurized portion 228. As described above, this structure is the same in the one-side clip 213 and the other-side clip 214 provided in the first fastening device 200, the second fastening device 201, and the third fastening device 202, and each has the non-pressurized portion 228 on the root side of each groove, i.e., the side of the clip base 211. As described above, the grooves of the first fastening device 200, the second fastening device 201, and the third fastening device 202, the one-side clip groove 222, and the other-side clip groove 223, have substantially the same effects as described below.

[0041] In the portion of the one-side clip groove 222 located further toward the clip tip 217 from the range of length L5, the width of the one-side clip groove 222 in the longitudinal direction V direction narrows abruptly to width L3. Width L3 is slightly narrower than the thickness L18 of the side partition pair 16 in the longitudinal direction V direction. The range of thickness L3 has a shape that continues a little, as shown as length L6. The portion of length L6 shown in FIG. 8 is a portion in which the thickness of the one-side clip groove 222 is slightly narrower than the thickness L18 of the side partition pair 16 in the longitudinal direction V direction. As shown in FIG. 9, the portion of length L6 of the one-side clip groove 222 is a portion that is in a state of being sandwiched by the one-side partition 18 from both sides, and is referred to as a fitting portion 230 in this specification. After the portion of length L6, the width of the one-side clip groove 222 in the longitudinal direction V gradually expands from this portion toward the clip tip 217 in the range of the clip tip portion 216 shown in FIG. 8. Therefore, when the one-side bulkhead 18 of the side bulkhead pair 16 is inserted into the one-side clip groove 222 and the terminal connecting device 100 is fixed to the terminal block 10, the one-side clip piece 225 and the other-side clip piece 226 are slightly spread apart by the one-side bulkhead 18 of the side bulkhead pair 16 in the portion of the one-side clip groove 222 with length L6 as shown in Fig. 8. The clip base 211, the one-side clip piece 225, and the other-side clip piece 226 are made of resin and have elasticity. Therefore, even if the one-side clip piece 225 and the other-side clip piece 226 are slightly spread apart in the portion of the one-side clip groove 222 with length L6, the deformation of the one-side clip piece 225 and the other-side clip piece 226 absorbs the change in shape, and pressure is applied from both sides to the inserted one-side bulkhead 18, so that the one-side bulkhead 18 is fixed.

[0042] In the operation of fixing the terminal connecting device 100 to the terminal block 10, the one-side bulkhead upper end 19 of the one-side bulkhead 18 of the side bulkhead pair 16 corresponding to the one-side clip groove 222 is guided into the one-side clip groove 222 from the clip tip 217 shown in Fig. 8. The width of the one-side clip groove 222 gradually narrows at the clip tip portion 216. In Fig. 5, in all the one-side clips 213 and the other-side clips 214 of the first fixing device 200, the second fixing device 201, and the third fixing device 202, the width of the one-side clip groove 222 and the other-side clip groove 223 in the longitudinal direction V direction relative to the one-side bulkhead upper end 19 and the other-side bulkhead upper end 21 of the corresponding side bulkhead pair 16 is narrowed, and the positional relationship between the terminal connecting device 100 and the terminal block 10 is determined.

[0043] Since the terminal connecting device 100 has at least two fixing devices, the first fixing device 200 and the second fixing device 201, the positional relationship between the terminal connecting device 100 and the terminal block 10 is determined by at least the one-side clip 213 and the other-side clip 214 of the first fixing device 200 and the one-side clip 213 and the other-side clip 214 of the second fixing device 201, so that the application of a force having a component in the longitudinal direction V to the side bulkhead pair 16 contributing to the fixing is suppressed. This suppresses damage to the side bulkhead pair 16 contributing to the fixing.

[0044] When the upper end 19 of the one-side bulkhead and the upper end 21 of the other-side bulkhead of the side bulkhead pair 16, which contribute to the fixing, pass the region of length L6 in FIG. 8, the length in the longitudinal direction V of the one-side clip groove 222 enters a region of length L2 wider than the thickness L18 of the side bulkhead pair 16. Therefore, no force is applied to the upper end 19 of the one-side bulkhead and the upper end 21 of the other-side bulkhead, which have low mechanical strength. This structure prevents damage to the side bulkhead pair 16. The contact portion between the one-side clip groove 222 and the side bulkhead pair 16 is a portion close to the base of the side bulkhead pair 16, and this portion close to the base is a portion where the side bulkhead pair 16 is reinforced by the one-side wiring screw base 24 and the terminal base 12. Therefore, damage to the side bulkhead pair 16 is unlikely to occur. Of course, as mentioned above, since two or more fixing devices are used, such as the first fixing device 200 and the second fixing device 201, it is important that the structure is designed to prevent force from being applied to the side partition pair 16 in the longitudinal direction V.

[0045] In Fig. 8 and Fig. 9, the clip root portion 215 has a curved end on the side of the clip base portion 211 of the one-side clip groove 222. This prevents stress concentration at the clip root portion 215, and prevents damage, even if the one-side clip piece 225 or the other-side clip piece 226 is deformed in a direction slightly expanding at the fitting portion 230. The one-side clip piece 225 and the other-side clip piece 226 gradually increase in thickness from the clip tip 217 on the outer surface opposite the one-side clip groove 222, and further form a curved shape at the clip root portion 215 to be integrated with the clip base portion 211. These shapes also prevent stress concentration, and prevent damage. The same is true for the connecting portion between the non-pressurized portion 228 of the one-side clip groove 222 and the fitting portion 230, and the shape is such that the connection is made via a curved surface so as not to create corners. This has the effect of preventing damage to the one-side clip piece 225 and the other-side clip piece 226 even under conditions in which the gap between the one-side wiring screw 25 and the one-side partition wall 18 is extremely small, as shown in Figure 9, i.e., the one-side clip piece 225 and the other-side clip piece 226 cannot be made thick.

[0046] 7. Description of Other Embodiments Another embodiment will be described with reference to Figs. 10 to 13. In the above embodiment, the connection device body 110 is made of a conductive metal plate. However, depending on the application, it is required to configure the connection device body 110 with an insulating plate. In this embodiment, in order to maintain the screw connection terminal portion 120 for connecting with the wiring screw pair 22 provided on the terminal block 10 in an insulated state from other screw connection terminal portions 120 for connecting with other wiring screw pairs 22, instead of using the metal connection device body 110, a resin connection device body 111 manufactured by molding a resin material having insulating properties is used. The connection device body 110 and the resin connection device body 111 are almost the same in terms of, for example, action and effect, except that they have electrical insulation. In this specification, the term "molding" is used to include all methods, such as a method of manufacturing using a mold, a method of manufacturing by cutting, and even a method of manufacturing using a 3D printer.

[0047] Fig. 10 is a plan view, and Fig. 11 is a bottom view, but Fig. 11 shows the terminal connecting device 100 shown in Fig. 10 rotated about its longitudinal direction V. Therefore, the configurations shown on the left and right are reversed between Fig. 10 and Fig. 11. In these figures, the first fixing device 200, the second fixing device 201, and the third fixing device 202 have the same structure as previously described, and also have the same action and effect. The configurations and action and effect of the first fixing device 200, the second fixing device 201, and the third fixing device 202 are very important, but since they have already been described, a description thereof will be omitted here.

[0048] The resin connecting device body 111 of the terminal connecting device 100 has an elongated shape along the longitudinal direction V, and the first fixing device 200, the second fixing device 201, and the third fixing device 202 are fixed thereto. As in the previous embodiment, the first fixing device 200 and the second fixing device 201 are provided at both ends or positions close to both ends in the longitudinal direction V of the connecting device body 110. By arranging them in this manner, it is possible to suppress the generation of a force in a twisting direction with respect to the longitudinal direction V on the connecting device body 110. This is as described in the previous embodiment. As in the previous embodiment, the third fixing device 202 is provided between the first fixing device 200 and the second fixing device 201. The configuration and the effects thereof are as described with reference to Figs. 7 to 9.

[0049] The resin connection device body 111 is provided with a screw connection terminal portion 120 at a position corresponding to the wire screw pair 22 of the terminal block 10. FIG. 12 shows the state of the screw connection terminal portion 120 before the terminal connection device 100 is fixed to the terminal block 10. The resin connection device body 111 is provided with a hole 116 for fixing the screw connection terminal portion 120, and a fixing tube 134 for fixing the screw connection terminal portion 120 is inserted into the hole 116 and fixed to the resin connection device body 111 with a nut 128. Inside the fixing tube 134, a moving shaft 124 having a contact end 122 for connecting to, for example, the other side wire screw 29 of the wire screw pair 22 is provided and fixed with a nut 128. The moving shaft 124 penetrates the inside of the fixing tube 134, but the contact end 122 is biased by a spring 130 in a direction away from the connection device body 110. The spring 130 biases the moving shaft 124 that penetrates the inside of the fixed tube 134, and the contact end 122 moves in a direction away from the plastic connection device body 111. The movement of the moving shaft 124 is stopped when a stopper 125 provided on the moving shaft 124 comes into contact with the end of the fixed tube 134. With the movement of the moving shaft 124 stopped, the contact end 122 is held. The maximum length of the contact end 122 from the plastic connection device body 111 is set by adjusting the position of the stopper 125 provided on the moving shaft 124.

[0050] FIG. 12 shows the state of the screw connection terminal part 120 before the terminal connection device 100 is fixed to the terminal block 10. In this configuration, the hole 116 is provided on the one-side clip 213, and the contact end 122 provided on the tip of the moving shaft 124 is electrically connected to the other-side wiring screw 29 of the wiring screw pair 22 as described below. In the case of electrically connecting the contact end 122 provided on the tip of the moving shaft 124 to the one-side wiring screw 25 of the wiring screw pair 22, the hole 116 is provided on the one-side clip 213. Other configurations and effects are the same whether the connection device main body side end part 112 is connected to the other-side wiring screw 29 or the one-side wiring screw 25. As a representative of these configurations, a configuration in which the hole 116 is received on the other-side wiring screw 29 shown in FIG. 12 will be described.

[0051] 12, in which the contact end 122 provided at the tip of the moving shaft 124 is connected to the other side wiring screw 29 of the wiring screw pair 22, before the terminal connecting device 100 is fixed to the terminal block 10, the contact end 122 provided at the tip of the moving shaft 124 is kept at a position slightly protruding from the one side clip 213. When the terminal connecting device 100 is fixed to the terminal block 10, when the contact end 122 is electrically connected to a planned screw, for example, the other side wiring screw 29 of the planned wiring screw pair 22, the positional relationship between the terminal connecting device 100 and the terminal block 10 is manually adjusted so that the contact end 122 is in a position where it properly contacts the planned other side wiring screw 29. Then, the terminal connecting device 100 is fixed to the terminal block 10. In a configuration in which the contact ends 122 protrude far beyond the tip of the one-side clip 213, the protruding contact ends 122 cause various obstacles in fixing the terminal connecting device 100 to the terminal block 10. Normally, many contact ends 122 are connected to the other-side wiring screws 29 of the corresponding wiring screw pairs 22, so that each of the largely protruding contact ends 122 is brought into contact with each of the corresponding other-side wiring screws 29 and moved toward the resin connecting device body 111 against the spring pressure of each spring 130, which makes it easy for the terminal connecting device 100 to wobble. This wobble applies a longitudinal force to the side bulkhead pair 16 used for fixing, which may damage the side bulkhead pair 16.

[0052] If the contact end 122 is positioned closer to the resin connection device body 111 than the tip of the other-side clip 214 before the terminal connection device 100 is fixed to the terminal block 10, it is difficult to increase the change in length of the spring 130 between the state before the contact end 122 is connected to the corresponding other-side wiring screw 29 and the state in which the contact end 122 is connected to the corresponding other-side wiring screw 29. Therefore, the force with which the contact end 122 contacts the corresponding other-side wiring screw 29 and presses the other-side wiring screw 29 becomes smaller when the terminal connection device 100 is fixed to the terminal block 10. To maintain a sufficient electrical connection, it is desirable for the contact end 122 to press the other-side wiring screw 29 with a pressure equal to or greater than a predetermined pressure. However, if the change in the spring 130 is small, it is difficult to maintain the pressing force within a stable range.

[0053] By configuring the contact end 122 to be slightly protruding from the one-side clip 213 or the other-side clip 214 before the terminal connecting device 100 is fixed to the terminal block 10, and the spring 130 is compressed by the other-side wiring screw 29 with the terminal connecting device 100 fixed to the terminal block 10, so that the contact end 122 is located closer to the resin connecting device body 111 than the tip of the one-side clip 213 or the other-side clip 214, the change in length of the spring 130 can be set to an appropriate value, and an appropriate pressing force can be obtained in the connected state. For example, it is desirable that the amount of protrusion of the contact end 122 from the tip of the one-side clip 213 or the other-side clip 214 before the terminal connecting device 100 is fixed to the terminal block 10 be about several millimeters. Since there are often multiple contact ends 122 that are electrically connected to corresponding other-side wiring screws 29, the contact ends 122 protrude slightly from the tips of the one-side clip 213 and the other-side clip 214 before the terminal connecting device 100 is fixed to the terminal block 10, and after the one-side terminal connecting device 100 is fixed to the terminal block 10, the contact ends 122 are positioned closer to the resin connecting device main body 111 than the tips of the one-side clip 213 and the other-side clip 214. This makes it easier to detect any abnormality that may occur in the contact ends 122, springs 130, etc.

[0054] When removing the terminal connecting device 100 fixed to the terminal block 10, if the contact end 122 protrudes too far, it will be an obstacle to the work. If it protrudes only slightly from the one-side clip 213 and the other-side clip 214, it will not be an obstacle to the work. The external lead wire 142 shown in FIG. 13 is an external lead wire 142 for performing measurements, inspections, etc. Various reference symbols are shown in FIG. 12 and FIG. 13. The configurations indicated by these reference symbols have already been described in the previous embodiment. The configurations of the same reference symbols perform the same functions and have the same effects. Therefore, the configurations of these reference symbols have the same functions, effects, and effects as those described in the previous embodiment. Therefore, the description in this embodiment will be omitted. Also, as shown in FIG. 10 and FIG. 11, a large number of screw connection terminal parts 120 are provided. The screw connection terminal parts 120 have the same configurations as those described based on FIG. 12 and FIG. 13, respectively, and have the above-mentioned functions and effects.

[0055] 8. Features and Effects of the Two Embodiments The features of the above-mentioned two embodiments will be described, and further, the effects based on each feature will be described with reference to the configuration of the embodiment for each feature.

[0056] [Terminal connection device having the first feature] The terminal connection device 100 having the first characteristic is a terminal connection device 100 fixed to a terminal block 10, The terminal block 10 includes a central bulkhead 14 having an elongated shape, a pair of side bulkheads 16 and a pair of wiring screws 22 arranged alternately along the longitudinal direction of the central bulkhead 14. The pair of side partitions 16 includes a first partition 18 arranged on one side of the central partition 14 and an other partition 20 arranged on the other side of the central partition 14 in a direction perpendicular to the longitudinal direction of the central partition 14, with the central partition 14 in between, the wiring screw pair 22 includes a one-side wiring screw 25 arranged on one side of the central partition 14 and a other-side wiring screw 29 arranged on the other side of the central partition 14 in a direction perpendicular to the longitudinal direction of the central partition 14, with the central partition 14 in between; The terminal connecting device 100 comprises a connecting device main body 110 having an elongated shape along the longitudinal direction of the central bulkhead 14 of the terminal block 10, a screw connecting terminal portion 120 for electrically connecting to one side wiring screw 25 or the other side wiring screw 29 of at least one wiring screw pair 22 of the terminal block 10, and a first fixing device 200 and a second fixing device 201 for fixing the terminal connecting device 100 to the terminal block 10; The first fixing device 200 and the second fixing device 201 are provided at positions corresponding to the first and second side partition wall pairs 16 among the side partition wall pairs 16 arranged in the longitudinal direction of the terminal block 10, respectively, and a predetermined number of side partition wall pairs 16 are provided between the first side partition wall pair 16 to which the first fixing device 200 corresponds and the second side partition wall pair 16 to which the second fixing device 201 corresponds, The first fastening device 200 includes a first clip pair 212 for mating with a corresponding first side bulkhead pair 16; The first clip pair 212 includes a first one-side clip 213 having a first one-side clip groove 222 for fitting into a one-side partition wall 18 of a corresponding first-side partition wall pair 16, and a first other-side clip 214 having a first other-side clip groove 223 for fitting into a other-side partition wall 20 of a corresponding first-side partition wall pair 16, The second fastening device 201 includes a second clip pair 212 for mating with a corresponding second side bulkhead pair 16; The second clip pair 212 includes a second one-side clip 213 having a second one-side clip groove 222 for fitting into the one-side partition wall 18 of the corresponding second-side partition wall pair 16, and a second other-side clip 214 having a second other-side clip groove 223 for fitting into the other-side partition wall 20 of the corresponding second-side partition wall pair 16. It is characterized by:

[0057] [Regarding the action and effect of the terminal connecting device 100 having the first feature] The terminal block 10 includes a pair of wiring screws 22 and a pair of side bulkheads 16 arranged alternately along the longitudinal direction V. The main purpose of the pair of side bulkheads 16 is to provide electrical insulation between the pairs of wiring screws 22 arranged along the longitudinal direction V. Almost all commercially available terminal blocks 10 include the pair of side bulkheads 16, and by using the pair of side bulkheads 16 to fix the terminal connection device 100 to the terminal block 10, it is possible to provide a terminal connection device 100 that can be widely used in many products. However, when the pair of side bulkheads 16 is used to fix the terminal connection device 100 for a purpose other than the original purpose, it is necessary to solve a problem related to mechanical strength.

[0058] The side bulkhead pair 16 provided in the terminal block 10 is made thin in thickness in the longitudinal direction V of the terminal block 10. If the thickness of the side bulkhead pair 16 in the longitudinal direction V were to be thickened, the distance between the wiring screw pairs 22 provided along the longitudinal direction V of the terminal block 10 would have to be made wider. This would result in a problem of the overall length of the terminal block 10 in the longitudinal direction V becoming longer. As described above, the main purpose of providing the side bulkhead pair 16 is to provide electrical insulation. For this purpose, even if the side bulkhead pair 16 has a thin shape, the original purpose can be sufficiently achieved.

[0059] In order to fix the terminal connection device 100 to the terminal block 10, the terminal connection device 100 includes a first fixing device 200 and a second fixing device 201 each having a one-side clip 213 and an other-side clip 214 for clamping the side bulkhead pair 16. However, as described above, the side bulkhead pair 16 provided on the terminal block 10 has a small thickness in the longitudinal direction V. Therefore, it is required to solve the problem that the mechanical strength against the force applied to the side bulkhead pair 16 in the longitudinal direction V is insufficient. To this end, it is necessary to provide a structure that can suppress the force applied to the side bulkhead pair 16 of the terminal block 10 in the longitudinal direction V by the terminal connection device 100. It is also required to provide a structure that does not generate a force in a torsional direction to the side bulkhead pair 16. It is important that the configuration is such that it is unlikely that a force in the longitudinal direction V or a torsional force will act on the side bulkhead pair 16, not only when the terminal connection device 100 is fixed to the terminal block 10, but also during the process of fixing the terminal connection device 100 to the terminal block 10 or during the process of removing the terminal connection device 100 from the terminal block 10.

[0060] The terminal connecting device 100 having the first characteristic has a configuration that makes it difficult for a force in the longitudinal direction V or a torsional force to be generated on the one-side bulkhead 18 and the other-side bulkhead 20 that constitute the side bulkhead pair 16. In order to fix the terminal connecting device 100 to the terminal block 10, at least two fixing devices, a first fixing device 200 and a second fixing device 201, are provided on the connecting device main body 110 of the terminal connecting device 100 at positions spaced apart by a predetermined number of side bulkhead pairs 16. Furthermore, the first fixing device 200 and the second fixing device 201 each have a one-side clip 213 and an other-side clip 214.

[0061] In the terminal connecting device 100 having the first characteristic, the first one-side clip 213 of the first fixing device 200 has a first one-side clip groove 222, and fits into the one-side partition wall 18 of the first-side partition wall pair 16 at a position corresponding to the first one-side clip 213. Also, the first other-side clip 214 having a first other-side clip groove 223 fits into the other-side partition wall 20 of the first-side partition wall pair 16. The one-side partition wall 18 of the first-side partition wall pair 16 and the other-side partition wall 20 of the first-side partition wall pair 16 are arranged with the central partition wall 14 in between, and a configuration is provided in which the first fixing device 200 is prevented from rotating.

[0062] In addition, as described above, the second fixing device 201 is provided, and the second fixing device 201 also includes the second one-side clip 213 and the second other-side clip 214, similar to the first fixing device 200. The second one-side clip 213 and the second other-side clip 214 of the second fixing device 201 are fitted to the second one-side bulkhead 18 and the second other-side bulkhead 20 of the second side bulkhead pair 16, which are located at corresponding positions, respectively. With this structure, the terminal connecting device 100 is prevented from being subjected to a force in the longitudinal direction V on the side bulkhead pair 16 with which it is fitted. In addition, the first fixing device 200 and the second fixing device 201 are fixed at positions spaced apart from each other by a predetermined number of side bulkhead pairs 16. Therefore, the terminal connecting device 100 is configured to be less likely to be twisted in the longitudinal direction V of the terminal block 10.

[0063] In particular, in the above configuration, when the terminal connecting device 100 is fixed to the terminal block 10 or when the terminal connecting device 100 is removed from the terminal block 10, the first fixing device 200 and the second fixing device 201 prevent a force in the longitudinal direction from being applied to the side bulkhead pair 16. In addition, a force in the rotational direction from being applied to the side bulkhead pair 16 is prevented. As a result, the side bulkhead pair 16 of the terminal block 10 can be used to fix the terminal connecting device 100.

[0064] [Regarding the terminal connecting device 100 having the second feature] The terminal connecting device 100 having the second characteristic is the terminal connecting device 100 having the first characteristic, a first one-side clip groove 222 of a first one-side clip 213 of a first clip pair 212 of a first fastening device 200 and a first other-side clip groove 223 of a first other-side clip 214 of a first clip pair 212 of a first fastening device 200 each have an elongated shape extending along the direction perpendicular to the longitudinal direction of the central partition wall 14, and further, each of the first one-side clip groove 222 and the first other-side clip groove 223 has a shape with both ends open in the direction perpendicular to the longitudinal direction of the central partition wall 14, the second one-side clip groove 222 of the second one-side clip 213 of the second clip pair 212 of the second fastening device 201 and the second other-side clip groove 223 of the second other-side clip 213 each have an elongated shape extending along the direction perpendicular to the longitudinal direction of the central partition 14, and further have a shape with both ends open in the direction perpendicular to the longitudinal direction of the central partition 14; It is characterized by:

[0065] [Regarding the action and effect of the terminal connecting device 100 having the second feature] In the terminal block 10 to which the terminal connecting device 100 having the second feature is fixed, the pair of side bulkheads 16 are each thin and wide in the direction perpendicular to the longitudinal direction of the central bulkhead 14. The first one-side clip groove 222 and the first other-side clip groove 223 of the first fixing device 200 and the second one-side clip groove 222 and the second other-side clip groove 223 of the second fixing device 201 are fitted into these thin and wide portions, thereby fixing the terminal connecting device 100 to the terminal block 10. The pair of side bulkheads 16 of the terminal block 10 are shaped to be relatively strong against forces perpendicular to the longitudinal direction V of the central bulkhead 14. However, they have the drawback of having poor mechanical strength against forces in the longitudinal direction V of the central bulkhead 14. Therefore, the terminal connecting device 100 is required to have a structure that makes it difficult for the terminal connecting device 100 to move in the longitudinal direction V of the central partition wall 14 when the terminal connecting device 100 is fixed or removed.

[0066] The first one-side clip groove 222 and the first other-side clip groove 223 of the first fixing device 200, and the second one-side clip groove 222 and the second other-side clip groove 223 of the second fixing device 201 are each shaped such that their ends are open in a direction perpendicular to the longitudinal direction of the central bulkhead 14. Due to this shape, in the operation of fixing the terminal connecting device 100 having the second characteristic to the terminal block 10, the terminal connecting device 100 is easily rotated on a plane perpendicular to the longitudinal direction V of the central bulkhead 14. As a result, in the operation of fixing the terminal connecting device 100 having the second characteristic to the terminal block 10, movement in the longitudinal direction of the central bulkhead 14 is unlikely to occur. In other words, if the structure does not move in any direction, movement in an unexpected direction is likely to occur. However, in a structure that allows movement in one direction, the effect of easily suppressing movement in another direction is obtained. As a result, in the terminal connection device 100 having the second feature, the longitudinal force of the central partition wall 14 applied to the first side partition wall pair 16 and the second side partition wall pair 16 that hold the first fixing device 200 and the second fixing device 201 can be suppressed, thereby reducing the possibility of damage to the first side partition wall pair 16 and the second side partition wall pair 16 used for fixing.

[0067] [Regarding the terminal connecting device 100 having the third feature] The terminal connecting device 100 having the third feature is the terminal connecting device 100 having the second feature, In the terminal block 10 to which the terminal connecting device 100 is fixed, screw bases 24 and 28 are provided at the bases of the one-side wiring screw 25 and the other-side wiring screw 29 in order to fix the one-side wiring screw 25 and the other-side wiring screw 29 constituting the wiring screw pair 22, a first one-side clip groove 222 of the first one-side clip 213 of the first clip pair 212 of the first fixing device 200 and a first other-side clip groove 223 of the first other-side clip 213 are each shaped to extend toward a screw base 24 or a screw base 28 located on both sides of a first-side bulkhead pair 16 of the terminal block 10 into which the first clip pair 212 is fitted; the second one-side clip groove 222 of the second one-side clip 213 of the second clip pair 212 of the second fastening device 201 and the second other-side clip groove 223 of the second other-side clip 214 are each shaped to extend toward the screw base 24 or the screw base 28 located on both sides of the second-side bulkhead pair 16 of the terminal block 10 into which the second clip pair 212 is fitted, The first one-side clip groove 222 and the first other-side clip groove 223 of the first clip pair 212, and the second one-side clip groove 222 and the second other-side clip groove 223 of the second clip pair 212 each have a non-pressurized portion 228 having a width L2 wider than a thickness L18 of the side partition wall pair 16 in the longitudinal direction on the side closer to the connection device main body 110, which is the root side of the first one-side clip groove 222 and the first other-side clip groove 223, and on the side closer to the connection device main body 110, which is the root side of the second one-side clip groove 222 and the second other-side clip groove 223, The first one-side clip groove 222 and the first other-side clip groove 223 of the first clip pair 212, and the second one-side clip groove 222 and the second other-side clip groove 223 of the second clip pair 212 each have a fitting portion 230 having a width L3 narrower than the thickness L18 of the side bulkhead pair 16 on the side farther from the connection device main body 110 than the non-pressurizing portion 228, It is characterized by:

[0068] [Effects of the terminal connecting device 100 having the third feature] Each side bulkhead pair 16 of the terminal block 10 has a shape in which its mechanical strength is reinforced by the one-side wiring screw base 24 and the other-side wiring screw base 28. Also, since each is integrated with the central bulkhead 14, its mechanical strength is reinforced by the central bulkhead 14. However, the one-side bulkhead upper end 19 of the one-side bulkhead 18 and the other-side bulkhead upper end 21 of the other-side bulkhead 20 are located away from the one-side wiring screw base 24 and the other-side wiring screw base 28, and therefore their mechanical strength is weak. In the terminal connecting device 100 having the third feature, the first one-side clip groove 222 and the first other-side clip groove 223 of the first clip pair 212 of the first fixing device 200, and the second one-side clip groove 222 and the second other-side clip groove 223 of the second clip pair 212 of the second fixing device 201 are located at the non-pressurized portions 228 of the first one-side clip groove 222 and the first other-side clip groove 223 of the first clip pair 212 of the first fixing device 200 when the terminal connecting device 100 is fixed to the terminal block 10. Therefore, the shape is such that it is difficult to come into contact. Even if there is contact, the shape is such that almost no force is applied. That is, in the above embodiment, a non-pressurized portion 228 is formed, and this non-pressurized portion 228 is shaped so that no force is applied to the one-side bulkhead upper end 19 or the other-side bulkhead upper end 21 of the side bulkhead pair 16 when the terminal connecting device 100 is fixed to the terminal block 10. The same applies to the one-side clip 213 and the other-side clip 214 of the second fixing device 201 and the third fixing device 202. Therefore, it is possible to prevent damage to the one-side bulkhead upper end 19 or the other-side bulkhead upper end 21 of the side bulkhead pair 16 in the terminal block 10, which are the weakest parts.

[0069] On the other hand, in the first fixing device 200, the second fixing device 201, and the third fixing device 202, the position where the one-side clip 213 and the other-side clip 214 engage with the target side partition wall pair 16 is on the tip side of the one-side clip groove 222 and the other-side clip groove 223 of the one-side clip 213 and the other-side clip 214, respectively, further than the non-pressurized portion 228. In other words, it is closer to the one-side wiring screw base 24 and the other-side wiring screw base 28 of the target side partition wall pair 16. The location where force acts on the side partition wall pair 16 can be a location that avoids the one-side partition wall upper end 19 and the other-side partition wall upper end 21, which have weak mechanical strength as described above.

[0070] [Regarding the terminal connecting device 100 having the fourth feature] The terminal connection device 100 having the fourth feature is the terminal connection device 100 having the third feature, the first one-side clip groove 222 and the first other-side clip groove 223 of the first one-side clip 213 of the first clip pair 212 of the first fixing device 200, and the second one-side clip groove 222 and the second other-side clip groove 223 of the second one-side clip 213 of the second clip pair 212 of the second fixing device 201, each have a width at a tip of the groove wider than the width at the fitting portion 230, and the width of each groove gradually narrows from the tip of the groove toward the fitting portion 230 of the groove, It is characterized by:

[0071] [Function and effect of the terminal connecting device 100 having the fourth feature] As described above, the one-side bulkhead upper end 19 and the other-side bulkhead upper end 21 of the pair of side bulkheads 16 have low strength against the force in the longitudinal direction V of the terminal block 10. Therefore, in the process of fixing the terminal connecting device 100 to the terminal block 10, it is desirable to prevent the force in the longitudinal direction V of the terminal block 10 from being applied to the one-side bulkhead upper end 19 and the other-side bulkhead upper end 21.

[0072] In the configuration having the fourth characteristic, the first fixing device 200 of the terminal connecting device 100 and each of the one-side clips 213 and the other-side clips 214 of the first fixing device 200 are slightly inserted into the corresponding pair of side partition walls 16, and then a force is gradually applied to the one-side partition wall upper end 19 and the other-side partition wall upper end 21. By applying force gradually, the positional relationship between the terminal connecting device 100 and the terminal block 10 in the longitudinal direction V is stably determined without being disturbed. Therefore, the configuration is such that a sudden large force is prevented from being applied to the one-side partition wall upper end 19 and the other-side partition wall upper end 21 in the longitudinal direction V of the terminal block 10.

[0073] 8, the first one-side clip groove 222 and the first other-side clip groove 223, the second one-side clip groove 222 and the second other-side clip groove 223 have wide distal ends, and as the one-side partition wall upper end 19 and the other-side partition wall upper end 21 of the corresponding side partition wall pair 16 are inserted, their mutual positional relationship becomes accurate. With this configuration, it is possible to prevent a large force from being applied in the longitudinal direction to the one-side partition wall upper end 19 and the other-side partition wall upper end 21 of the corresponding side partition wall pair 16.

[0074] [Regarding the terminal connecting device 100 having the fifth feature] The fifth feature of the terminal connection device 100 is the terminal connection device 100 having the third feature, The first fixing device 200 and the second fixing device 201 are fixed to the connection device main body 110 having an elongated shape in the longitudinal direction at positions separated by the predetermined number of side bulkhead pairs 16, The connection device body 110 is formed of an electrically conductive metal plate. A screw connection terminal portion 120 for connection to one of the connection screws of the one side wiring screw 25 or the other side wiring screw 29 of the wiring screw pair 22 present between the first fixing device 200 and the second fixing device 201 is provided on one side or the other side of the connection device main body 110, A bent portion 113 is provided integrally with the connection device body 110 at a connection device body side end 112, which is the side end of the connection device body 110 opposite to the side where the screw connection terminal portion 120 is provided, The bent portion 113 is bent at the connection device main body side end portion 112 of the connection device main body 110 arranged in a position covering the top of the side bulkhead pair 16, and extends toward the screw base 24 on which the wiring screw 25 is provided, which is located on the opposite side to the side on which the screw connection terminal portion 120 of the terminal block 10 is provided. It is characterized by:

[0075] [Function and effect of the terminal connecting device 100 having the fifth feature] When the connection device body 110 of the terminal connection device 100 is a metal plate, the connection device body 110 may be warped or otherwise deformed due to changes over time or temperature. If the positional relationship between the one-side clip groove 222 and the other-side clip groove 223 of the first fixing device 200 and the second fixing device 201 provided on the connection device body 110, respectively, and the corresponding one-side partition wall 18 and the other-side partition wall 20 of the side partition wall pair 16 changes as described above, a force in the longitudinal direction V or a twisting force may be applied to the one-side partition wall 18 and the other-side partition wall 20. If such a force is applied, the side partition wall pair 16 used for fixing may be damaged, as described above.

[0076] In the terminal connecting device 100 having the fifth characteristic, the connecting device body 110 made of a metal plate has a bent portion 113 that is bent by a predetermined length along the connecting device body side end portion 112. This bent portion 113 suppresses deformation of the connecting device body 110 itself, such as warping or twisting. Therefore, changes in the positional relationship between the first fixing device 200 and the second fixing device 201 provided on the connecting device body 110 are suppressed, and the above-mentioned damage to the side bulkhead pair 16 of the terminal block 10 can be suppressed.

[0077] [Regarding the terminal connecting device 100 having the sixth feature] The terminal connecting device 100 having the sixth feature is the terminal connecting device 100 having the third feature, The connection device body 110 is a resin connection device body 111 molded from insulating resin. A first fixing device 200 and a second fixing device 201 are provided on a resin connecting device body 111, separated by a predetermined number of side bulkhead pairs 16. The screw connection terminal portion 120 is fixed to the resin connection device body 111 in order to electrically connect to a connection target screw, which is one of the one-side wiring screw 25 or the other-side wiring screw 29 of the connection target wiring screw pair 22 that is an electrical connection target among the wiring screw pair 22; The screw connection terminal portion 120 has a contact end 122 for electrically connecting to the connection target screw 22, a fixing tube 134 for movably fixing the contact end 122 to the resin connection device body 111, and a spring 130 acting in a direction to move the contact end 122 away from the resin connection device body 111; When the terminal connecting device 100 is not fixed to the terminal block 10, the contact end 122 is located farther from the resin connecting device body 111 than the one-side clip 213 and the other-side clip 214 of the first fixing device 200 and the second fixing device 201 due to the action of the spring 130. In addition, when the terminal connecting device 100 is fixed to the terminal block 10, the contact end 122 comes into contact with the connection target screw, causing the spring 130 to contract, and the contact end 122 is positioned closer to the resin connecting device body 111 than the tips of the one-side clip 213 and the other-side clip 214 of the first fixing device 200 and the second fixing device 201. It is characterized by:

[0078] [Operation and effect of the terminal connecting device 100 having the sixth feature] It is required that the screw connection terminal portion 120 of the first fixing device 200 or the second fixing device 201 is electrically and reliably connected to the connection target screw to be connected. It is also desirable to make it easier to fix the terminal connection device 100 to the terminal block 10 and to suppress erroneous connection when fixing the terminal connection device 100 to the terminal block 10. For this reason, before the terminal connection device 100 having the sixth feature is fixed to the terminal block 10, the contact end 122 of the screw connection terminal portion 120 protrudes outward from the tip of the one-side clip 213 or the other-side clip 214 of the first fixing device 200 or the second fixing device 201, that is, to a position far from the resin connection device body 111. This makes it easy to align the contact end 122 with the connection target screw. Since the terminal block 10 for fixing the terminal connection device 100 having this feature has a small mechanical strength, it is desirable to avoid applying a force in an unnecessary direction to the terminal block 10 as much as possible. Therefore, it is desirable that the positional relationship between the contact end 122 of the screw connection terminal part 120 and the screw to be connected is easy to understand. Furthermore, when the terminal connection device 100 is fixed to the terminal block 10, the contact end 122 of the screw connection terminal part 120 comes into contact with the screw to be connected, contracting the spring 130, and the tip end of the one-side clip 213 and the other-side clip 214 protrudes beyond the contact end 122 of the screw connection terminal part 120. As a result, the contact end 122 of the screw connection terminal part 120 can be electrically connected to the screw to be connected in a good condition. Furthermore, it is possible to visually confirm that the spring 130 and the like are operating normally, which leads to improved reliability.

[0079] As described above, the side partition wall pair 16 has low mechanical strength, and the mechanical strength is particularly low at the one-side partition wall upper end 19 and the other-side partition wall upper end 21, which are located far from the one-side wiring screw base 24 and the other-side wiring screw base 28 of the side partition wall pair 16. The base of the side partition wall pair 16 is integrated with, for example, the one-side wiring screw base 24 and the other-side wiring screw base 28, and has higher mechanical strength than other parts. Therefore, it is desirable that the one-side clip 213 and the other-side clip 214 of the first fixing device 200 and the second fixing device 201 extend as close to the wiring screw base 28 as possible. When the terminal connection device 100 having the sixth feature is fixed to the terminal block 10, the tip portions of the one-side clip 213 and the other-side clip 214 extend to the vicinity of the one-side wiring screw 25 and the other-side wiring screw 29, and the position at which the force is applied to the one-side partition wall 18 and the other-side partition wall 20 can be positioned far from the one-side partition wall upper end 19 and the other-side partition wall upper end 21, which have low mechanical strength.

[0080] When the contact end 122 is positioned closer to the resin connection device body 111 than the tip of the other-side clip 214 before the terminal connection device 100 is fixed to the terminal block 10, it is difficult to increase the change in length of the spring 130 between the state before the terminal connection device 100 is fixed to the terminal block 10 and the state after the terminal connection device 100 is fixed to the terminal block 10. Therefore, the force with which the contact end 122 presses the corresponding other-side wiring screw 29 when the terminal connection device 100 is fixed to the terminal block 10 becomes smaller. In order to maintain a sufficient electrical connection, it is desirable for the contact end 122 to press the other-side wiring screw 29 with a pressure equal to or greater than a predetermined pressure. However, if the change in the spring 130 is small, it is difficult to maintain the pressing force within a stable range. By making the contact end 122 protrude slightly beyond the one-side clip 213 or the other-side clip 214 before the terminal connecting device 100 is fixed to the terminal block 10, the amount of change in length of the spring 130 can be increased, and the pressing force when the contact end 122 is connected to the other-side wiring screw 29 can be increased, resulting in a reliable and stable electrical connection. [Explanation of symbols]

[0081] 10 terminal block, 12 terminal block base, 14 central bulkhead, 16 side bulkhead pair, 18 one side bulkhead, 19 one side bulkhead top end, 20 other side bulkhead, 21 other side bulkhead top end, 22 wiring screw pair, 23 screw base, 24 one side wiring screw base, 25 one side wiring screw, 26 one side wiring, 2 7...short-circuit metal plate, 28...other-side wiring screw base, 29...other-side wiring screw, 30...other-side wiring, 100...terminal connection device, 110...connection device main body, 111...resin connection device main body, 112...connection device main body side end, 113...bent portion, 114...connection device main body upper surface, 116...hole, 120... Screw connection terminal portion, 122...contact end, 124...moving axis, 126...holding device, 128...nut, 130...spring, 134...fixing tube, 140...external connection terminal, 142...external lead wire, 200...first fixing device, 208...mounting portion, 210...fixing device base, 211...clip base, 212...clip pair, 213...one side clip, 214...other side clip, 215...clip root portion, 216...clip tip portion, 217...clip tip, 220...clip groove, 222...one side clip groove, 223...other side clip groove, 225...one side clip piece, 226...other side clip piece.

Claims

1. A terminal connection device fixed to a terminal block, comprising: The terminal block includes a terminal block base, a central partition wall having an elongated shape, and a pair of side partition walls and a pair of wiring screws arranged alternately along a longitudinal direction of the central partition wall, and in the terminal block, the terminal block base is arranged at a bottom of the terminal block, which is a back side of the terminal block, and the central partition wall, the pair of side partition walls, and the pair of wiring screws are arranged on an obverse side of the terminal block base, The pair of side partition walls includes a first partition wall arranged on one side of the central partition wall in a direction perpendicular to the longitudinal direction of the central partition wall, and a second partition wall arranged on the other side of the central partition wall, the first partition wall and the second partition wall being disposed ... the wiring screw pair includes a one-side wiring screw arranged on one side of the central partition wall and a other-side wiring screw arranged on the other side of the central partition wall in a direction perpendicular to the longitudinal direction of the central partition wall, with the central partition wall in between, the terminal connecting device comprises a connecting device main body having an elongated shape along the longitudinal direction of the central bulkhead of the terminal block, a screw connecting terminal portion for electrically connecting to the one side wiring screw or the other side wiring screw of at least one of the wiring screw pairs of the terminal block, and a first fixing device and a second fixing device for fixing the terminal connecting device to the terminal block; the first fixing device and the second fixing device are provided at positions corresponding to a first side partition wall pair and a second side partition wall pair among the side partition wall pairs arranged along the longitudinal direction of the central partition wall, respectively, and a predetermined number of the side partition wall pairs are provided between the first side partition wall pair to which the first fixing device corresponds and the second side partition wall pair to which the second fixing device corresponds, the first fastening device includes a first pair of clips for mating with a corresponding pair of the first side bulkheads; the first clip pair includes a first one-side clip having a first one-side clip groove for fitting into a corresponding one-side partition wall of the first-side partition wall pair, and a first other-side clip having a first other-side clip groove for fitting into a corresponding other-side partition wall of the first-side partition wall pair, the second fastening device includes a second pair of clips for mating with a corresponding pair of the second side bulkheads; the second clip pair includes a second one-side clip having a second one-side clip groove for fitting into a one-side partition wall of the corresponding second-side partition wall pair, and a second other-side clip having a second other-side clip groove for fitting into a other-side partition wall of the corresponding second-side partition wall pair, the terminal connection device is disposed on a front side of the terminal block with respect to the terminal block, and the first fixing device and the second fixing device are provided on an opposing surface of the connection device body, which is a surface of the connection device body facing the terminal block; the first one-side partition wall of the corresponding first side partition wall pair is inserted from a front end of the one-side partition wall of the first side partition wall pair and the other-side partition wall of the corresponding first side partition wall pair is inserted from a front end of the other-side partition wall of the first side partition wall pair into the first one-side clip groove and the first other-side clip groove of the first clip pair of the first fixing device, and the second one-side clip groove and the second other-side clip groove of the second clip pair of the second fixing device are inserted from a front end of the one-side partition wall of the corresponding second side partition wall pair and the other-side partition wall of the corresponding second side partition wall pair is inserted from a front end of the other-side partition wall of the second side partition wall pair into the second one-side clip groove and the second other-side clip groove of the second clip pair of the second fixing device, respectively, and the terminal connecting device is fixed to the terminal block. A terminal connection device comprising:

2. 2. The terminal connection device according to claim 1, the first one-side clip groove of the first one-side clip of the first clip pair of the first fixing device and the first other-side clip groove of the first other-side clip of the first clip pair have an elongated shape extending along the direction perpendicular to the longitudinal direction of the central partition wall, and further, the first one-side clip groove and the first other-side clip groove each have a shape with both ends open in the direction perpendicular to the longitudinal direction of the central partition wall, the second one-side clip groove of the second one-side clip of the second clip pair of the second fastening device and the second other-side clip groove of the second other-side clip of the second clip pair of the second fastening device each have an elongated shape extending along the direction perpendicular to the longitudinal direction of the central partition wall, and both ends of the elongated shape are open in the direction perpendicular to the longitudinal direction of the central partition wall; A terminal connection device comprising:

3. 3. The terminal connection device according to claim 2, the terminal block to which the terminal connecting device is fixed is provided with a screw base at a base of the one-side wiring screw and the other-side wiring screw that constitute the wiring screw pair in order to fix the one-side wiring screw and the other-side wiring screw, the first one-side clip groove of the first one-side clip of the first clip pair of the first fixing device and the first other-side clip groove of the first other-side clip of the first clip pair of the first fixing device each have a shape extending toward the screw bases located on both sides of the first side bulkhead pair of the terminal block into which the first clip pair is fitted, the second one-side clip groove of the second one-side clip of the second clip pair of the second fixing device and the second other-side clip groove of the second other-side clip of the second clip pair of the second fixing device each have a shape extending toward the screw bases located on both sides of the second side bulkhead pair of the terminal block into which the second clip pair is fitted, the first one-side clip groove and the first other-side clip groove of the first clip pair, and the second one-side clip groove and the second other-side clip groove of the second clip pair each have a non-pressurized portion having a width L2 wider than a thickness L18 of the side partition wall pair in the longitudinal direction on a side closer to the connection device main body that is a root side of the first one-side clip groove and the first other-side clip groove, and on a side closer to the connection device main body that is a root side of the second one-side clip groove and the second other-side clip groove, the first one-side clip groove and the first other-side clip groove of the first clip pair, and the second one-side clip groove and the second other-side clip groove of the second clip pair each have a fitting portion having a width L3 narrower than the thickness L18 of the side bulkhead pair, on a side farther from the connection device body than the non-pressurized portion, A terminal connection device comprising:

4. 4. The terminal connecting device according to claim 3, the first one-side clip groove and the first other-side clip groove of the first one-side clip of the first clip pair of the first fastening device, and the second one-side clip groove and the second other-side clip groove of the second one-side clip of the second clip pair of the second fastening device, each have a width at a tip of the groove that is wider than the width at the fitting portion, and the width of each groove gradually narrows from the tip of the groove toward the fitting portion of the groove, A terminal connection device comprising:

5. 4. The terminal connecting device according to claim 3, the first fixing device and the second fixing device are fixed to the connection device body having an elongated shape in the longitudinal direction of the central partition wall at positions spaced apart from the predetermined number of side partition wall pairs, the connection device body is formed of an electrically conductive metal plate, the screw connection terminal portion for connecting to one of the connection screws of the one side wiring screw or the other side wiring screw of the pair of wiring screws present between the first fixing device and the second fixing device is provided on one side or the other side of the connection device body, a bent portion formed integrally with the connection device body is provided at a connection device body side end portion, which is a side end portion of the connection device body opposite to a side where the screw connection terminal portion is provided, the bent portion is bent at the connection device body side end portion of the connection device body arranged in a position covering the front side of the side bulkhead pair, and extends toward a screw base on which a wiring screw is provided, the wiring screw being located on the opposite side to the side on which the screw connection terminal portion is provided in the terminal block. A terminal connection device comprising:

6. 4. The terminal connecting device according to claim 3, the connection device body is a resin connection device body molded from insulating resin, the first fixing device and the second fixing device are provided on the resin connecting device body, separated by the predetermined number of side bulkhead pairs; the screw connection terminal portion is fixed to the resin connection device body in order to electrically connect to a connection target screw, which is one of the one-side wiring screws or the other-side wiring screws of a connection target wiring screw pair that is an electrical connection target among the wiring screw pair, the screw connection terminal portion has a contact end for electrically connecting to the connection target screw, a fixing tube for movably fixing the contact end to the resin connection device body, and a spring acting in a direction to move the contact end away from the resin connection device body, When the terminal connecting device is not fixed to the terminal block, the contact end is located farther from the resin connecting device body than the one-side clip and the other-side clip of the first fixing device and the second fixing device due to the action of the spring, In addition, when the terminal connecting device is fixed to the terminal block, the spring is compressed by the contact end coming into contact with the connection target screw, and the contact end is positioned closer to the resin connecting device body than the tip of the one-side clip and the other-side clip of the first fixing device and the second fixing device. A terminal connection device comprising:

Images