Connector structure

Abstract

One embodiment provides a connector structure that facilitates the assembly of the thermistor holder. [Solution] The connector structure of one embodiment comprises a case for holding terminals, a thermistor capable of detecting the temperature of the terminals, and a thermistor holder for bringing the thermistor into close contact with the terminals. The case has an insulating cylindrical portion into which the thermistor holder is inserted, and the cylindrical portion has a notch formed therein that opens to allow the thermistor holder to be pushed in when the thermistor holder is inserted.

Description

Technical Field

[0001] Embodiments of the present invention relate to a connector structure.

Background Art

[0002] A connector including a terminal to be connected to an electric wire and a housing for storing the terminal is known. A thermistor is attached to the outer peripheral surface of the terminal.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, when assembling a thermistor holder that makes the thermistor adhere to the terminal, the assembly may be difficult.

[0005] One embodiment provides a connector structure that can facilitate the assembly of the thermistor holder.

Means for Solving the Problems

[0006] A connector structure according to one embodiment includes a case that holds a terminal, a thermistor that can detect the temperature of the terminal, and a thermistor holder that makes the thermistor adhere to the terminal. The case has an insulating cylindrical portion into which the thermistor holder is inserted, and a notch is formed in the cylindrical portion so as to open and allow the thermistor holder to be pushed in when the thermistor holder is inserted.

Effects of the Invention

[0007] According to one embodiment, the assembly of the thermistor holder can be facilitated.

Brief Description of the Drawings

[0008] [Figure 1] A perspective view showing the connector structure of the embodiment. [Figure 2] A plan view showing the connector structure of the embodiment. [Figure 3] A cross-sectional view along the line III-III in Figure 2. [Figure 4] A perspective view showing an enlarged view of the cylindrical portion of the embodiment. [Figure 5] A perspective view illustrating the assembly method of the thermistor holder according to the embodiment. [Figure 6] Figure 5 is a perspective view illustrating the assembly method of the thermistor holder. [Figure 7] A cross-sectional view illustrating the case where a thermistor holder is inserted into the cylindrical portion of the comparative example. [Figure 8] Figure 7 is a cross-sectional view illustrating the case where a thermistor holder is inserted. [Figure 9] A cross-sectional view illustrating the case where a thermistor holder is inserted into the cylindrical portion of the embodiment. [Figure 10] Figure 9 is followed by a cross-sectional view illustrating the case where a thermistor holder is inserted into the cylindrical section. [Modes for carrying out the invention]

[0009] The embodiments will be described below with reference to the drawings. In the following description, expressions indicating relative or absolute arrangements such as "parallel," "orthogonal," "center," and "coaxial" will not only strictly mean such arrangements or states, but will also include arrangements or states that are relatively displaced by an angle or distance that allows for tolerances or the same function to be obtained. In the drawings used in the following description, the scale of each component may be changed as appropriate in order to make each component recognizable.

[0010] <Connector structure> Figure 1 is a perspective view showing the connector structure 1 of the embodiment. Figure 2 is a plan view showing the connector structure 1 of the embodiment. Figure 3 is a cross-sectional view along the line III-III in Figure 2. Referring to Figures 1 to 3, the connector structure 1 comprises a case 2 for holding the terminal 10, a thermistor 3 capable of detecting the temperature of the terminal 10, and a thermistor holder 4 for bringing the thermistor 3 into close contact with the terminal 10.

[0011] Connector structure 1 is installed in a vehicle, for example, to supply power (charge) to a battery mounted on the vehicle, such as an electric vehicle or a plug-in hybrid vehicle, from outside the vehicle. Connector structure 1 is connected to a wire 5 extending from the battery mounted on the vehicle. Connector structure 1 constitutes a charging inlet. By mating a mating connector (for example, a charging gun) into connector structure 1, power is supplied to the battery from outside the vehicle, and the battery is charged.

[0012] In the following explanation, the X, Y, and Z orthogonal coordinate system will be used as needed. The Z direction corresponds to the axial direction of the cylindrical portion 25, which will be described later. The X direction corresponds to the direction in which the pair of cylindrical portions 25, which will be described later, are adjacent. The Y direction is perpendicular to the X and Z directions. In the following explanation, of the X, Y, and Z directions, the side indicated by the arrow in the figure will be referred to as the positive (+) side, and the side opposite the arrow will be referred to as the negative (-) side. The Z direction coincides with the mating direction of the connector structure 1 and the mating connector (not shown). The +Z side corresponds to the front side in the mating direction (the side approaching the mating connector, the front side) as viewed from the connector structure 1. The -Z side corresponds to the disengagement side in the mating direction (the side moving away from the mating connector, the rear side) as viewed from the connector structure 1.

[0013] <Terminal> The terminals 10 are made of metal. A pair of terminals 10 are provided. One end of a pair of electric wires 5 is connected to each of the pair of terminals 10. The other ends of the pair of electric wires 5 are connected to a battery (not shown). The electric wires 5 consist of a conductor core wire 5a and an insulating sheath 5b that covers the conductor core wire 5a (see Figure 3).

[0014] The pair of terminals 10 are, for example, of the same shape as each other. The terminals 10 extend in the Z direction. The terminals 10 are cylindrical. Specifically, the terminal 10 has a stepped cylindrical portion including a small-diameter portion 11 and a large-diameter portion 12 having an outer diameter larger than that of the small-diameter portion 11 (see FIG. 3).

[0015] The pair of terminals 10 includes a cylindrical male terminal portion 13 that protrudes in the +Z direction from the +Z end face of the small-diameter portion 11. The male terminal portion 13 of one of the pair of terminals 10 functions as an anode-side terminal. The male terminal portion 13 of the other of the pair of terminals 10 functions as a cathode-side terminal. When the connector structure 1 is mated with a mating connector, the male terminal portion 13 of one of the terminals 10 is connected to the anode-side female terminal portion of the mating connector. When the connector structure 1 is mated with a mating connector, the male terminal portion 13 of the other of the terminals 10 is connected to the cathode-side female terminal portion of the mating connector.

[0016] For example, a concave portion (not shown) that recesses in the +Z direction is formed on the -Z end face of the large-diameter portion 12. The conductor core wire 5a exposed at one end of the electric wire 5 is inserted into this concave portion and caulked and fixed. By this caulking and fixing, one end of the electric wire 5 and the terminal 10 are electrically connected.

[0017] As shown in FIG. 3, an annular groove 11h is formed at the boundary between the small-diameter portion 11 and the male terminal portion 13. An O-ring 14, for example, is mounted in the annular groove 11h. The O-ring 14 is provided, for example, at the boundary between the small-diameter portion 11 and a front cover (not shown).

[0018] For example, a stepped portion 12a and an annular groove 12h are formed at the boundary between the large-diameter portion 12 and the case 2. The stepped portion 12a is locked to a locking projection 20a of a case body 20 described later. The annular groove 12h is formed on the outer peripheral surface of the large-diameter portion 12 near the +Z side of the stepped portion 12a. A lock piece 15, for example, is mounted in the annular groove 12h. The lock piece 15 has a function of restricting the position of the terminal 10 together with the stepped portion 12a and the locking projection 20a. Due to the functions of the lock piece 15 and the like, displacement of the position of the terminal 10 with respect to the case 2 is suppressed.

[0019] <Case> As shown in Figure 3, case 2 is composed of, for example, a case body 20 and a rear cover 21. The case body 20 is made of, for example, resin. The case body 20 has through holes for passing a pair of terminals 10 and a pair of electric wires 5. The case body 20 has a shape that is elongated in the Z direction. Note that in Figure 3, the portion of the case body 20 on the Z-center side is omitted.

[0020] The case body 20 has the function of holding a pair of terminals 10 and a pair of electric wires 5. The +Z side portion of the case body 20 has the function of holding the pair of terminals 10 in an insulated state with a gap between them in the X direction. The -Z side portion of the case body 20 has the function of holding the pair of electric wires 5 extending from the pair of terminals 10 to the -Z side with a gap between them in the X direction.

[0021] For example, a packing 22 with a water-sealing function is provided between the inner wall surface of the -Z side portion of the case body 20 and the outer surface of the electric wire 5 (insulation 5b). The function of the packing 22 prevents water from entering the inside of the case 2 from the outside (the connection point between the conductor core wire 5a of the electric wire 5 and the terminal 10).

[0022] The rear cover 21 is assembled to the case body 20 from the -Z side (rear side). The rear cover 21 is made of resin, for example. The front cover (not shown) is assembled to the case body 20 from the +Z side (front side). Multiple bolt insertion points 23 (for example, 4 locations) are provided on the outer wall of the case body 20 through which bolts for assembling the front cover are inserted (see Figure 2).

[0023] <Thermistor> As shown in Figure 2, a pair of thermistors 3 are provided, one for each of the pair of terminals 10. The thermistors 3 are mounted on the terminals 10 by thermistor holders 4. The thermistors 3 are mounted on a part of the large-diameter portion 12 of the terminal 10 that extends from the case body 20 toward the +Z side (hereinafter also referred to as the "mounted portion 12b").

[0024] By attaching the thermistor 3 to the pair of terminals 10, the temperature of the pair of terminals 10 becomes detectable. By detecting the temperature of the pair of terminals 10, it becomes possible to monitor the temperature changes of the pair of terminals 10 when the connector structure 1 is in use (for example, when charging the battery).

[0025] <Thermistor Holder> As shown in Figure 2, the thermistor holder 4 comprises a holder body 40 that holds the thermistor 3, and a pair of holding parts 41 and 42 that extend from the holder body 40 and hold the terminal 10. The pair of holding parts 41 and 42 are formed in an arc shape that follows the outer circumference of the terminal 10 (mounted part 12b) when viewed from the Z direction. Before assembling the thermistor holder 4 to the terminal 10, the radius of curvature of the arc-shaped portion (inner circumferential surface) of the pair of holding parts 41 and 42 is smaller than the outer diameter of the terminal 10 (mounted part 12b).

[0026] The pair of retaining parts 41 and 42 have, for example, different lengths (lengths along the outer circumference of the terminal 10 when viewed from the Z direction). In the example in Figure 2, the length of the retaining part 41 on the outside in the X direction is shorter than the length of the retaining part 42 on the inside in the X direction (wall 27 side). The pair of retaining parts 41 and 42 may have the same length. The lengths of each retaining part 41 and 42 can be changed according to the design specifications.

[0027] The thermistor holder 4 uses the reaction force generated when it is pushed outward during assembly to the terminal 10 to hold the thermistor 3 in close contact with the terminal 10. The thermistor holder 4 has arc-shaped holding portions 41 and 42 that follow the outer circumference of the terminal 10. The thermistor holder 4 uses the reaction force generated when the holding portions 41 and 42 are pushed outward during assembly to the terminal 10 to hold the thermistor 3 in close contact with the terminal 10. In the assembled state of the thermistor holder 4, the thermistor 3 is in close contact with the mounting portion 12b due to the reaction force of the pair of holding portions 41 and 42.

[0028] <Cylinder part> Figure 4 is an enlarged perspective view showing the cylindrical portion 25 of the embodiment. Referring together to Figures 2 to 4, the case 2 has an insulating cylindrical portion 25 into which the thermistor holder 4 is inserted. At least a portion of the cylindrical portion 25 is formed in a cylindrical shape that follows the outer shape of the terminal 10 when viewed from the Z direction. The cylindrical portion 25 is provided in the case body 20. The cylindrical portion 25 extends in the +Z direction from around the through hole through which the terminal 10 passes in the case body 20. A pair of cylindrical portions 25 are provided adjacent to each other. The pair of cylindrical portions 25 have the same height to each other, for example, in the Z direction.

[0029] Case 2 further has an insulating wall portion 27 between the portions adjacent to each other in the pair of cylindrical portions 25. The wall portion 27 is located in the center between the pair of terminals 10 in the X direction. The wall portion 27 is higher than the pair of cylindrical portions 25 in the Z direction. The +Z side end of the wall portion 27 is positioned more towards the +Z side than the +Z side end of each of the pair of cylindrical portions 25.

[0030] Case 2 is provided with an insertion portion 28 into which a pair of thermistors 3 and a portion of a pair of thermistor holders 4 are inserted from the +Z side. The insertion portion 28 has an inner surface that conforms to the outer shape of the thermistors 3 and a portion of the thermistor holders 4 when viewed from the Z direction. The insertion portion 28 has the function of limiting the displacement of the thermistors 3 and thermistor holders 4 in the XY direction (displacement in directions other than the +Z direction). The function of the insertion portion 28 suppresses positional displacement of the thermistors 3 and thermistor holders 4 in the XY direction.

[0031] <Notch> Referring to Figures 2 and 4, a notch 26 is formed in the cylindrical portion 25, which opens to allow the thermistor holder 4 to be pushed in when the thermistor holder 4 is inserted. The notch 26 is formed in each of the pair of cylindrical portions 25. The notch 26 is formed in a different part of the pair of cylindrical portions 25 than the parts adjacent to each other. The notch 26 is formed in a different part from the wall portion 27.

[0032] The notches 26 are formed at least opposite each other in a direction intersecting the axial direction of the cylindrical portion 25. The notches 26 are formed at least opposite each other via the terminals 10 in the radial direction of the cylindrical portion 25 (a direction perpendicular to the axial direction of the cylindrical portion 25). The notches 26 are formed by opening a portion of the cylindrical portion 25 in the radial direction and the +Z direction, respectively.

[0033] The notch 26 is formed in a range with a central angle of 180 degrees or more when viewed from the axial direction of the cylindrical portion 25. In Figures 2 and 4, the range in which the notch 26 is formed is indicated by the central angle A. The notch 26 may be formed in a semicircular shape when viewed from the axial direction (Z direction) of the cylindrical portion 25, or it may be formed in a sector shape with a central angle of 180 degrees or more. The shape of the notch 26 is not limited to the above and can be changed according to the design specifications.

[0034] The range in which the notch 26 is formed is more preferably 210 degrees or more in central angle, and even more preferably 240 degrees or more, when viewed from the axial direction of the cylindrical portion 25. The lower limit of the range in which the notch 26 is formed is not limited to the above and can be changed according to the design specifications. The lower limit of the range in which the notch 26 is formed should be set so that the thermistor holder 4 can be pushed in when the thermistor holder 4 is inserted.

[0035] For example, the upper limit of the range in which the notch 26 is formed should be set to an extent that ensures the strength and rigidity of the cylindrical portion 25. The range in which the notch 26 is formed may be, for example, a central angle of 330 degrees or less when viewed from the axial direction of the cylindrical portion 25. Note that the upper limit of the range in which the notch 26 is formed is not limited to the above and can be changed according to the design specifications.

[0036] <How to assemble the thermistor holder> Figure 5 is a perspective view illustrating the assembly method of the thermistor holder 4 in the embodiment. Figure 6 is a perspective view illustrating the assembly method of the thermistor holder 4, following Figure 5. As described above, before assembling the thermistor holder 4 to the terminal 10, the radius of curvature of the arc-shaped portions (inner circumferential surfaces) of the pair of holding parts 41 and 42 is smaller than the outer diameter of the terminal 10 (mounted portion 12b). The thermistor holder 4 is assembled to the terminal 10 with the front cover (not shown) and other parts removed from the case body 20.

[0037] When assembling the thermistor holder 4 to the terminal 10, the thermistor holder 4 is pushed in the direction of the arrow (-Z direction) shown in Figure 5. This causes the thermistor holder 4 (for example, a pair of holding parts 41, 42) to be pushed outwards in the direction of the arrow shown in Figure 6 (radially outwards from the terminal 10). The reaction force when the thermistor holder 4 is pushed outwards causes the thermistor 3 to be brought into close contact with the terminal 10 (mounted part 12b).

[0038] <When inserting the thermistor holder into the cylindrical part of the comparative example> Figure 7 is a cross-sectional view illustrating the case where the thermistor holder 4 is inserted into the cylindrical portion 25X of the comparative example. Figure 8 is a cross-sectional view illustrating the case where the thermistor holder 4 is inserted, following Figure 7. In the comparative example, the notch 26X is formed at one location (on one side in the radial direction of the terminal 10) in a direction intersecting the axial direction of the cylindrical portion 25X.

[0039] In the comparative example, when assembling the thermistor holder 4 to the terminal 10, the thermistor holder 4 is pushed in from one radial side of the terminal 10 in the direction of the arrow (-Z direction) shown in Figure 7. As a result, it is difficult to push the thermistor holder 4 parallel to the Z direction, and the thermistor holder 4 tilts as shown in Figure 8. When the thermistor holder 4 is tilted, assembly (mounting to the mounting part 12b) becomes difficult.

[0040] <When inserting the thermistor holder into the cylindrical portion of the embodiment> Figure 9 is a cross-sectional view illustrating the case in which the thermistor holder 4 is inserted into the cylindrical portion 25 of the embodiment. Figure 10 is a cross-sectional view following Figure 9 illustrating the case in which the thermistor holder 4 is inserted into the cylindrical portion 25. As described above, in the embodiment, the notches 26 are formed at positions that face each other in a direction intersecting the axial direction of the cylindrical portion 25. The notches 26 are formed, for example, in a semicircular shape or a sector shape with a central angle of 180 degrees or more when viewed from the axial direction of the cylindrical portion 25.

[0041] In this embodiment, when assembling the thermistor holder 4 to the terminal 10, the thermistor holder 4 can be pushed in from both radial sides of the terminal 10 in the direction of the arrows (-Z direction) shown in Figure 9. In this embodiment, for example, an operator can hold both portions of the thermistor holder 4 that face each other via the terminal 10 with their fingers. By pushing the thermistor holder 4 in from both radial sides of the terminal 10, it can be pushed in while maintaining parallelism to the Z direction, as shown in Figure 10. In this embodiment, tilting of the thermistor holder 4 is suppressed, making assembly (attachment to the mounting part 12b) easier.

[0042] Furthermore, when assembling the thermistor holder 4 to the terminal 10, the worker is not limited to pushing the thermistor holder 4 in with their fingers. For example, the worker may use a tool or machine to push the thermistor holder 4 in. The manner in which the thermistor holder 4 is pushed in can be changed according to the design specifications.

[0043] <Effects and Effects> As described above, the connector structure 1 of this embodiment comprises a case 2 for holding the terminal 10, a thermistor 3 capable of detecting the temperature of the terminal 10, and a thermistor holder 4 for bringing the thermistor 3 into close contact with the terminal 10. The case 2 has an insulating cylindrical portion 25 into which the thermistor holder 4 is inserted. A notch 26 is formed in the cylindrical portion 25, which opens to allow the thermistor holder 4 to be pushed in when the thermistor holder 4 is inserted. With this configuration, the thermistor holder 4 can be pushed in through the notch 26 of the cylindrical portion 25 when the thermistor holder 4 is inserted. Therefore, the assembly of the thermistor holder 4 can be made easy. In addition, the assembly of the thermistor holder 4 does not require time or skill.

[0044] In this embodiment, the notches 26 are formed at least opposite positions in a direction intersecting the axial direction of the cylindrical portion 25. With this configuration, the thermistor holder 4 can be pushed in through the notches 26 formed at opposite positions in the cylindrical portion 25. Therefore, assembly of the thermistor holder 4 can be made easier.

[0045] In this embodiment, the notch 26 is formed in a range with a central angle of 180 degrees or more when viewed from the axial direction of the cylindrical portion 25. With this configuration, the thermistor holder 4 can be pushed through a wider range of the notch 26 compared to when the notch 26 is formed in a range with a central angle of less than 180 degrees. Therefore, the assembly of the thermistor holder 4 can be made easier.

[0046] In this embodiment, a pair of cylindrical portions 25 are provided so as to be adjacent to each other. The notch 26 is formed in a different part from the part where the pair of cylindrical portions 25 are adjacent to each other. With this configuration, since the notch 26 is not required in the part where the pair of cylindrical portions 25 are adjacent to each other, the space that the worker pushes in with their fingers is also not required. This space can be used to shorten the distance between the pair of cylindrical portions 25 that are adjacent to each other. Therefore, the size of the connector structure 1 can be suppressed.

[0047] In this embodiment, case 2 further has insulating wall portions 27 between the portions of the pair of cylindrical portions 25 adjacent to each other. With this configuration, the wall portions 27 can ensure insulation between the portions of the pair of cylindrical portions 25 adjacent to each other. In addition, the wall portions 27 can ensure the strength and rigidity of the pair of cylindrical portions 25.

[0048] In this embodiment, the thermistor holder 4 uses the reaction force generated when it is pushed outward during assembly to the terminal 10 to bring the thermistor 3 into close contact with the terminal 10. With this configuration, since no separate part is required to bring the thermistor 3 into close contact with the terminal 10, the number of parts can be reduced.

[0049] In this embodiment, the terminal 10 is cylindrical. The thermistor holder 4 has arc-shaped holding portions 41 and 42 that follow the outer circumference of the terminal 10. The thermistor holder 4 uses the reaction force generated when the holding portions 41 and 42 are pushed outward during assembly to the terminal 10 to bring the thermistor 3 into close contact with the terminal 10. With this configuration, the reaction force of the holding portions 41 and 42 can be generated more stably by contact between the outer circumference of the terminal 10 and the inner circumference of the holding portions 41 and 42.

[0050] <Variation> In the embodiments described above, the notches were explained in an example where they are formed at least opposite each other in a direction intersecting the axial direction of the cylindrical portion, but the invention is not limited to this example. For example, the notches may be formed on one side in a direction intersecting the axial direction of the cylindrical portion. The notches only need to be formed in the cylindrical portion with an opening that allows the thermistor holder to be pushed in when the thermistor holder is inserted. The position of the notches can be changed according to the design specifications.

[0051] In the embodiments described above, the notches were explained as being formed in a range with a central angle of 180 degrees or more when viewed from the axial direction of the cylindrical portion, but the invention is not limited to this example. For example, the notches may be formed in a range with a central angle of less than 180 degrees when viewed from the axial direction of the cylindrical portion. For example, multiple notches may be formed at intervals in the circumferential direction of the cylindrical portion. For example, the notches may be formed continuously in the circumferential direction of the cylindrical portion. For example, the notches may be formed discontinuously (intermittently) in the circumferential direction of the cylindrical portion. The range of notch formation can be changed according to the design specifications.

[0052] In the embodiments described above, the notches were explained in an example where the notches were formed in parts different from the adjacent parts of the pair of cylindrical sections, but the invention is not limited to this example. For example, the notches may be formed in parts where the pair of cylindrical sections are adjacent to each other. For example, the notches may be formed in one of the pair of cylindrical sections and not in the other. The manner in which the notches are formed in the pair of cylindrical sections can be changed according to the design specifications.

[0053] In the embodiments described above, the case was explained with an example in which a pair of cylindrical sections have insulating walls in the portions adjacent to each other, but the case is not limited to this example. For example, the case does not need to have insulating walls in the portions adjacent to each other. The installation method of the insulating walls can be changed according to the design specifications.

[0054] In the embodiments described above, the thermistor holder was explained in which the thermistor is brought into close contact with the terminal by the reaction force when it is pushed outward during assembly to the terminal, but the invention is not limited to this example. For example, the connector structure may include a separate component for bringing the thermistor into close contact with the terminal. The manner in which the thermistor is brought into close contact with the terminal can be changed according to the design specifications.

[0055] In the embodiments described above, the terminal is cylindrical and the thermistor holder has an arc-shaped holding portion along the outer circumference of the terminal. However, the invention is not limited to this example. For example, the holding portion may have a shape other than an arc along the outer circumference of the terminal. For example, the thermistor holder only needs to have a shape that can contact the outer circumference of the terminal. The shape of the holding portion can be changed according to the design specifications.

[0056] Although embodiments and modifications have been described above, embodiments and modifications are not limited to these examples. Embodiments and modifications can be added, omitted, substituted, and otherwise changed without departing from the spirit of the present invention, and can also be combined with each other. [Explanation of Symbols]

[0057] 1. Connector structure 2 cases 3 Thermistor 4. Thermistor holder 10 terminals 25 Cylinder 26 Notches 27 Wall 41,42 Holding part A central angle

Claims

1. A case that holds the terminals, A thermistor capable of detecting the temperature of the aforementioned terminal, The system includes a thermistor holder that brings the thermistor into close contact with the terminals, The case has an insulating cylindrical portion into which the thermistor holder is inserted. The cylindrical portion has a notch formed in which the thermistor holder can be pushed in when the thermistor holder is inserted. Connector structure.

2. The notches are formed at least at positions facing each other in a direction intersecting the axial direction of the cylindrical portion. The connector structure according to claim 1.

3. The aforementioned notch is formed in a range with a central angle of 180 degrees or more when viewed from the axial direction. The connector structure according to claim 2.

4. The cylindrical portions are provided in pairs so as to be adjacent to each other. The aforementioned notches are formed in portions that are different from the portions adjacent to each other in the pair of cylindrical portions. The connector structure according to any one of claims 1 to 3.

5. The case further has insulating walls in the portions where the pair of cylindrical portions are adjacent to each other. The connector structure according to claim 4.

6. The thermistor holder, when assembled to the terminal, uses the reaction force when it is pushed outward to hold the thermistor in close contact with the terminal. The connector structure according to any one of claims 1 to 3.

7. The aforementioned terminal is cylindrical, The thermistor holder has an arc-shaped holding portion along the outer circumference of the terminal, The thermistor holder, when assembled to the terminal, uses the reaction force generated when the holding portion is pushed outward to secure the thermistor to the terminal. The connector structure according to claim 6.

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