JP3186653U - Fixing jig - Google Patents

Abstract

There is provided a fixing jig capable of preventing rework due to misalignment of monitor circuit components such as a thermostat.
A first positioning portion 110 to which a thermostat 32 having a stud portion 36 having a male screw at its tip is set, and a second positioning portion to which a thermostat mounting part 25A having a through hole portion through which the stud portion 36 passes is set. 120, and the first positioning portion 110 and the second positioning portion 120 are in a state in which the stud portion 36 is loosely aligned with the through hole portion, and in this state, the thermostat fixing nut 53 is attached to the stud portion 36. The thermostat 32 and the thermostat mounting part 25A are fixed by fastening the.
[Selection] Figure 9

Description

  The present invention relates to a fixing jig used for mounting a monitor circuit component such as a thermostat.

Some storage batteries have thermostats arranged inside a storage battery case (see, for example, Patent Document 1). Patent Document 1 describes a configuration in which a concave portion for positioning the thermostat is provided on a surface of the inner surface of the storage battery case facing the thermostat. In this configuration, it is necessary to provide an arrangement space for the thermostat between the inner surface of the storage battery case and the single cell in the case.
Further, the storage battery includes a thermostat having a stud portion with a male screw at the tip and a thermostat mounting component having a loose hole portion through which the stud portion penetrates, and an operator positions the thermostat and the thermostat mounting component by alignment. There are things to match.

Japanese Utility Model Publication No. 61-113378

However, in the alignment by the operator's alignment, the variation of the mounting position becomes large. For this reason, in products that require positional accuracy, rework due to positional deviation may occur.
The present invention has been made in view of the above-described circumstances, and it is an object of the present invention to provide a fixing jig capable of avoiding rework due to misalignment of monitor circuit components such as a thermostat.

  In order to solve the above-described problems, the present invention includes a first positioning portion in which a monitor circuit component having a stud portion with a male screw at the tip is set, and a mounted component having a loose hole through which the stud portion is loosely passed. A first positioning portion and a second positioning portion, wherein the first positioning portion and the second positioning portion are in a state where the stud portion is loosely aligned with the loose hole portion, and in this state, Provided is a fixing jig characterized in that the monitor circuit component part and the attached part are fixed by fastening a nut to a stud part.

  The present invention is characterized in that, in the above configuration, the first positioning portion has a through-hole through which the monitor circuit component can be inserted and removed in an axial direction of the stud portion and cannot move in a radial direction of the stud portion, The second positioning portion has a concave shape that allows the attached component to be inserted and removed in the axial direction of the stud portion and to be immovable in the radial direction of the stud portion.

Further, the present invention is characterized in that, in the above-mentioned configuration, the first positioning portion has a notch for opening a part of the through hole over the entire axial direction.
Further, according to the present invention, in the above configuration, the attached component has a connection plate in which a terminal protruding from a plurality of unit cells constituting the storage battery penetrates and the monitor circuit component is disposed between the penetrated terminals. And the first positioning portion and the second positioning portion include the stud portion and the loose hole portion so as to secure a predetermined gap between the penetrating terminal and the monitor circuit component. Are aligned.

  In the present invention, a first positioning portion in which a monitor circuit component having a stud portion with a male screw at the tip is set, and a second positioning portion in which a mounted component having a loose hole through which the stud portion is loosely set is set. The stud portion is in a loosely aligned state with the loose hole portion. And, in this state, the monitor circuit component part and the mounted part are fixed by fastening the nut to the stud part, so that rework due to the displacement of the monitor circuit component part is avoided. Can do.

It is a side view of a storage battery using the fixing jig of the present invention. It is the figure which showed the partial internal structure at the time of seeing a storage battery from upper direction. It is the figure which looked at the thermostat assembly from upper direction. It is the figure which looked at the thermostat assembly from the side. It is the figure which showed the thermostat attachment component. It is the figure which showed the thermostat. It is a top view of the jig for fixing. It is a side view of a fixing jig. It is the figure which set the thermostat and the thermostat attachment component to the fixing jig of FIG. It is the figure which set the thermostat and the thermostat attachment component to the fixing jig of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a storage battery 10 using the fixing jig of the present invention. FIG. 2 is a diagram showing a partial internal structure when the storage battery 10 is viewed from above. In addition, each direction, such as up and down described below, corresponds to each direction when the storage battery 10 is installed.
This storage battery 10 is mounted on various battery-utilizing devices, and the storage battery in which the dimensions and specifications of each part (including the shapes and specifications of thermostat mounting parts 25A and thermostat 32 described later) are determined in accordance with a predetermined standard. It is.

As shown in FIGS. 1 and 2, the storage battery 10 includes a metal battery storage case 11 and a plurality of single cells 21 stored in the battery storage case 11.
The battery storage case 11 includes a rectangular box-shaped battery case 12 that opens upward, and a lid 13 that covers the upper opening of the battery case 12. The lid 13 has a locking metal fitting 15 that can be locked to a lock mechanism 14 provided in the battery storage case 11, and is detachable from the battery case 12 via the lock mechanism 14.

The unit cells 21 are arranged side by side so as to substantially fill the region surrounded by the inner peripheral surface of the battery case 12, and in this embodiment, two cells are arranged in units of 10 cells.
Each unit cell 21 has a rectangular parallelepiped box shape, includes a pair of terminals (positive electrode terminal, negative electrode terminal) 22 protruding upward from the upper surface, and the terminals 22 of the adjacent unit cells 21 are conductors. 25 is electrically connected. By these connection plates 25, the unit cells 21 are connected in series or in parallel to form a “storage battery” that secures necessary voltage and necessary capacity.

  In the battery storage case 11, a monitor circuit 31 for monitoring the storage battery 10 is provided using a space that is open between the unit cells 21 and the lid portion 13. The monitor circuit 31 includes thermostats 32 and 32 that operate according to the temperature in the storage battery 10 and a temperature sensor (not shown) as monitor circuit components, and the operation results and sensor outputs of the thermostats 32 and 32 are stored in the battery. It outputs to the output part 33 (FIG. 1) provided outside the case 11.

  The output unit 33 is configured as a connector to which an electrical wiring 34 extending from the thermostats 32, 32 and the like is connected, and an electrical wiring (not shown) extending from the battery using device is connected to the connector. With this configuration, for example, when one of the thermostats 32 and 32 operates at a predetermined temperature (for example, an upper limit temperature of 70 ° C.), the operation is detected by the battery-utilized device, and a warning process or the like can be performed. The thermostats 32 and 32 are parts also called thermoswitches.

FIG. 3 is a view of an assembly (hereinafter referred to as a thermostat assembly) 35 of the thermostats 32 and 32 as viewed from above, and FIG. 4 is a view of the thermostat assembly 35 as viewed from the side. The thermostats 32 and 32 have the same structure.
As shown in FIGS. 3 and 4, the thermostat assembly 35 is formed by attaching the electrical wiring 34 to the thermostat 32 and attaching the thermostat 32 to the thermostat attachment component 25A.
The thermostat 32 has a cylindrical main body 32A and a stud 36 that protrudes from the main body 32A to the outside. In addition, the stud part 36 protrudes along the axial center of 32 A of column-shaped main-body parts. A terminal portion 32T to which the electrical wiring 34 is connected is provided on the surface of the main body portion 32A opposite to the stud portion 36.

The thermostat mounting component 25A also serves as a metal connection plate 25 (see FIG. 2) that connects the terminals 22 of the adjacent unit cells 21 to each other. This thermostat mounting part 25A is manufactured by applying a nickel plating to a flat plate member made of copper, and has a pair of holes 41, 41 through which a terminal 22 protruding from the unit cell 21 passes, and between the holes 41, 41. A thermostat 32 is supported.
The thermostat 32 and the stud portion 36 are covered with an epoxy resin 35J in order to ensure insulation and corrosion resistance after being attached to the thermostat attachment component 25A.
As shown in FIG. 2, the terminal 22 protruding from the unit cell 21 is formed as a male screw, and by fastening a nut (hereinafter referred to as a terminal fixing nut) 51 from above, the terminal 22 and the thermostat mounting part 25A Is fixed. In FIG. 3, the terminal fixing nut 51 is indicated by a two-dot chain line.

FIG. 5 is a view showing the thermostat mounting part 25 </ b> A, and FIG. 6 is a view showing the thermostat 32.
As shown in FIG. 5, the thermostat mounting part 25A is formed in a triangular flat plate member in a top view, and the pair of hole portions 41, 41 and the hole portions 41, 41 at positions corresponding to the respective apexes of the triangle. And a through-hole portion 42 having a smaller diameter.
The through hole portion 42 is formed in a loose hole (large diameter hole) through which the stud portion 36 (see FIG. 6) of the thermostat 32 penetrates.

When the thermostat 32 is assembled, as shown in FIG. 4, the male screw portion 36A provided at the tip of the stud portion 36 is protruded from the thermostat mounting component 25A. In this state, a thermostat 32 is fixed to the thermostat mounting part 25A by fastening a nut (hereinafter, referred to as a thermostat fixing nut) 53 to the male screw portion 36A.
Here, as shown in FIG. 6, the base end portion of the stud portion 36 is formed in a small-diameter shaft portion 36B having a smaller diameter than the male screw portion 36A. For this reason, when the stud portion 36 is passed through the thermostat mounting component 25A (see FIG. 4), a relatively large gap is left between the small diameter shaft portion 36B of the stud portion 36 and the through hole portion 42. Due to this gap, the mounting position of the thermostat 32 and the thermostat mounting part 25A is not fixed, and a shift (position shift) of the mounting position is caused.

As shown in FIG. 2, in this configuration, since the thermostat 32 is disposed between the terminals 22 penetrating the thermostat mounting part 25 </ b> A, it is necessary to secure a gap between the terminals 22 and the thermostat 32. However, if the positional deviation occurs, a sufficient gap cannot be secured.
When a sufficient gap cannot be secured, the terminal 22 and the thermostat 32 are too close to each other, and it is difficult to fasten the terminal fixing nut 51 (FIGS. 2 and 3). Actually, as shown in FIG. 3, the thermostat 32 is covered with the epoxy resin 35 </ b> J. Therefore, if there is not enough clearance, the gap between the epoxy resin 35 </ b> J and the terminal 22 becomes narrow, and the terminal fixing nut 51 Fastening work becomes difficult.

From the above, when the thermostat 32 and the thermostat mounting part 25A are aligned by the operator's alignment, since positional accuracy is required, the rework due to misalignment may occur, and the work is complicated. Become.
Therefore, in the present embodiment, a fixing jig 100 for aligning the thermostat 32 and the thermostat mounting part 25A is provided, and the thermostat 32 and the thermostat mounting part 25A are fixed in a state in which the positioning is performed by the fixing jig 100. I can do it.

FIG. 7 is a view of the fixing jig 100 as viewed from above, and FIG. 8 is a view as viewed from the side. 9 is a diagram in which the thermostat 32 and the thermostat mounting component 25A are set on the fixing jig 100 of FIG. 7, and FIG. 10 is a diagram of the thermostat 32 and the thermostat mounting component 25A on the fixing jig 100 of FIG. FIG.
The fixing jig 100 is formed of a material having rigidity such as a synthetic resin (phenol resin in the present embodiment). When roughly classified, the first positioning portion 110 on which the thermostat 32 is set and the thermostat mounting component 25A. Is integrally provided with a second positioning portion 120 on which is set.
In FIG. 8, the range of the first positioning unit 110 is indicated by a value X and the range of the second positioning unit 120 is indicated by a value Y for easy understanding.

As shown in FIGS. 7 and 8, the first positioning part 110 is such that the thermostat 32 can be inserted and removed in the axial direction of the stud part 36 (the direction along the reference numeral L1) and cannot move in the radial direction of the stud part 36. It has the through-hole 111 which is. In each figure, the symbol L1 is an axis (axial center) of the stud portion 36 when the thermostat 32 is inserted into the first positioning portion 110, and also corresponds to the central axis of the thermostat 32.
More specifically, the through-hole 111 has an inner peripheral surface along the outer peripheral surface of the thermostat 32, and thereby, the thermostat 32 can be guided along the inner peripheral surface so as to be detachable in the direction of the axis L1. (See FIGS. 9 and 10). Further, as shown in FIG. 7, the through hole 111 is a hole in a range θ1 of 180 degrees or more (θ = 270 degrees in this embodiment) around the axis L1 of the thermostat 32 inserted into the through hole 111. Is formed. Accordingly, the thermostat 32 does not come out from the through hole 111 in the radial direction, and the movement of the thermostat 32 in the radial direction of the stud portion 36 can be restricted (see FIG. 9).

Further, as shown in FIG. 7, the first positioning portion 110 has a notch portion 113 that opens a part of the through hole 111 over the entire axial direction of the through hole 111. As described above, since the through-hole 111 is formed in a range of 270 degrees (θ1) with the axis L1 as the center, the notch 113 is 90 degrees (360 degrees to 270 degrees) with the axis L1 as the center. It is formed in the range.
By providing the notch 113, the thermostat 32 inserted into the through hole 111 can be visually recognized from the outside, and the thermostat 32 can be easily inserted and removed, and the thermostat 32 is connected to the terminal portion 32T and the terminal portion 32T. The electrical wiring 34 can escape to the outside of the through hole 111 (see FIGS. 9 and 10).

The second positioning part 120 is formed in a concave shape for aligning the thermostat mounting part 25 </ b> A with respect to the thermostat 32 set in the first positioning part 110. More specifically, as shown in FIG. 7, the second positioning portion 120 is continuous with the end surface of the through hole 111 of the first positioning portion 110, and a mounting surface (contact) on which the thermostat mounting component 25 </ b> A is mounted. Surface) M1 and rising walls 123, 124, and 125 that rise around the thermostat mounting component 25A mounted on the mounting surface M1.
The rising walls 123, 124, and 125 are a plurality of abutting at different locations (5 locations in the present embodiment) of the thermostat mounting component 25 </ b> A so as to restrict the movement of the thermostat mounting component 25 </ b> A in the radial direction of the axis L <b> 1. It has (five) contact surfaces M2 to M6 (see FIG. 9).

  As shown in FIGS. 7 and 9, the rising wall 123 is formed in a U shape in a plan view, and a contact surface M2 that contacts the corners corresponding to the holes 41 and 41 of the thermostat mounting part 25A. , M3, and a contact surface M4 that contacts one side connecting the corners. Further, the rising walls 124 and 125 have contact surfaces M5 and M6 that contact the remaining two sides of the thermostat mounting component 25A. With these contact surfaces M2 to M6, the thermostat mounting part 25A can be positioned so as not to move in the radial direction of the axis L1.

With the above configuration, the thermostat 32 and the thermostat mounting part 25A are set in the fixing jig 100, so that the stud part 36 of the thermostat 32 and the through-hole part of the thermostat mounting part 25A as shown in FIGS. 42 (FIG. 5) can be aligned.
9 and 10, the thermostat 32 and the thermostat mounting component 25 </ b> A can be accurately fixed by fastening the thermostat fixing nut 53 to the stud portion 36 as shown in FIGS. 9 and 10. Become.

Here, in this configuration, the thermostat 32 set in the fixing jig 100 is movable in the direction of the axis L1, and the thermostat mounting part 25A set in the fixing jig 100 is also in the direction of the axis L1. It is possible to escape. Therefore, the thermostat 32 and the thermostat mounting part 25 </ b> A can be easily set to the fixing jig 100 in a state where the thermostat fixing part 25 </ b> A is temporarily tightened with the thermostat fixing nut 53.
If the fixing jig 100 can be set in a temporarily tightened state, the thermostat 32 and the thermostat mounting component 25A can be easily and quickly fixed by finally tightening the thermostat fixing nut 53 in that state. In this case, since the thermostat 32 and the thermostat mounting part 25A set on the fixing jig 100 are not separated, the fastening operation can be easily performed.

  As described above, in the present embodiment, the fixing jig 100 is used to align the stud portion 36 of the thermostat 32 and the through hole portion (free through hole) 42 of the thermostat mounting component 25A. Thus, the thermostat fixing nut 53 is fastened to the stud portion 36 so that the thermostat 32 and the thermostat mounting part 25A are fixed. As a result, it is possible to avoid rework due to misalignment between the thermostat 32 and the thermostat mounting part 25A, and these can be easily fixed.

The fixing jig 100 is integrally provided with a first positioning portion 110 where the thermostat 32 is set and a second positioning portion 120 where the thermostat mounting component 25A is set. The first positioning portion 110 has a through hole 111 that allows the thermostat 32 to be inserted and removed in the axial direction of the stud portion 36 and cannot move in the radial direction of the stud portion 36, and the second positioning portion 120 is attached to the thermostat. The component 25 </ b> A has a concave shape that can be inserted and removed in the axial direction of the stud portion 36 and cannot move in the radial direction of the stud portion 36.
According to this configuration, since the thermostat 32 and the thermostat mounting part 25A can be inserted and removed in the axial direction of the stud portion 36, they can be set in a state where they are temporarily tightened by the thermostat fixing nut 53. Thereby, it can be easily fastened by final fastening after setting.

Further, the first positioning part 110 has a notch part 113 that opens a part of the through hole 111 over the entire axial direction. According to this configuration, the thermostat 32 can be visually recognized from the outside, and the thermostat 32 can be easily inserted and removed, and the terminal portion 32 </ b> T and the like of the thermostat 32 can be released out of the through hole 111.
Further, in this configuration, the thermostat mounting part 25 </ b> A is a connection in which terminals 22, 22 projecting from the plurality of single cells 21 constituting the storage battery 10 penetrate and a thermostat 32 is disposed between the penetrated terminals 22, 22. A plate 25. The first positioning portion 110 and the second positioning portion 120 are arranged so that a predetermined gap is secured between the penetrating terminals 22, 22 and the thermostat 32, and the stud portion 36 and the through hole portion (free through hole portion). ) 42 is aligned. Therefore, by using the fixing jig 100, it is possible to easily fasten the thermostat 32 and the thermostat mounting component 25A while securing a desired gap between the terminals 22 and 22 that penetrated and the thermostat 32. Therefore, workability can be improved.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention.
For example, in the above-described embodiment, the fixing jig 100 used for alignment of the thermostat 32 has been described. However, the fixing jig 100 may not be limited to the thermostat 32. The storage battery having the monitor circuit 31 may include an electrical component other than the thermostat 32 such as a temperature sensor as a component (monitor circuit component) constituting the monitor circuit 31, and this type of monitor circuit component is used as the thermostat 32. The present invention can be applied to the case of mounting with the same structure.
In other words, the present invention is a fixing jig for aligning a monitor circuit component having a stud portion 36 with a male screw at the tip and a mounted component having a through hole portion (free through hole) 42 through which the stud portion 36 penetrates. It is possible to apply.

DESCRIPTION OF SYMBOLS 10 Storage battery 11 Battery storage case 21 Single cell 22 Terminal 25 Connection board 25A Thermostat attachment parts (connection plate, attached parts)
31 Monitor circuit 32 Thermostat (Monitor circuit component)
32A body portion 32T terminal portion 36 stud portion 41 hole portion 42 through hole portion (free through hole)
51 Terminal fixing nut 53 Thermostat fixing nut 100 Fixing jig 110 First positioning portion 111 Through hole 113 Notch portion 120 Second positioning portion L1 Stud portion axis (axial center)

Claims (3)

A first positioning portion in which a monitor circuit component having a stud portion with a male screw at the tip is set, and a second positioning portion in which a mounted component having a loose hole through which the stud portion is loosely set are integrally provided. ,
The first positioning portion and the second positioning portion are in a state where the stud portion is loosely aligned with the loose hole portion, and a nut is fastened to the stud portion in this state, thereby the monitor circuit. A fixing jig, wherein a component part and the attached part are fixed. The first positioning portion has a through-hole through which the monitor circuit component can be inserted and removed in the axial direction of the stud portion and immovable in the radial direction of the stud portion,
2. The fixing according to claim 1, wherein the second positioning portion has a concave shape that allows the attached component to be inserted and removed in an axial direction of the stud portion and to be immovable in a radial direction of the stud portion. Jig.   The fixing jig according to claim 2, wherein the first positioning part has a notch part that opens a part of the through hole in the entire axial direction.

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