Coil urging member and attachment structure of coil urging member

Abstract

The present invention can suppress a load on a coil assembly while preventing vibration or the like of the coil assembly, and improves the strength of an attachment structure of the coil assembly. This coil urging member (10) is disposed between a wall part (2) of a housing (1) and a coil assembly (20) electrically connected to an electrical component (3) of the housing (1) via a connection terminal (22). The coil urging member (10) comprises: a base part (11) that is attached to the wall part (2) or the coil assembly (20); an elastic part (12) that extends from the base part (11); locking receiving parts (14, 14) that are provided to the base part (11); and a locking part (15) that is provided to the elastic part (12) and locked to the locking receiving parts (14, 14) by the pressing force of the elastic part (12). The pressing force of the elastic part (12) applied to the coil assembly (20) is restricted by the locking part (15) being locked to the locking receiving parts (14, 14).

Description

Coil biasing member and mounting structure for coil biasing member

[0001] The present invention relates to a coil biasing member and a mounting structure for the coil biasing member.

[0002] A conventional technology has been known in which a coil biasing member is disposed between the housing of an electronic control device incorporating a coil assembly and the coil assembly (see, for example, Patent Document 1). The coil biasing member of Patent Document 1 is provided in a brake fluid pressure control device mounted on a vehicle. The coil biasing member is disposed between the coil assembly, which is disposed on one surface of a base, and a wall of the housing, and biases the coil assembly toward the base. The coil assembly is connected to electrical components such as a wiring board within the housing via connection terminals. The coil assembly is attached to the base in a state where a solenoid valve provided on the base is inserted inside and the coil assembly abuts against one surface of the base due to the pressing force of the coil biasing member.

[0003] The coil biasing member of Patent Document 1 can prevent vibration of the coil assembly caused by vibrations while the vehicle is running, and prevent contact between the coil assembly and the solenoid valve, thereby maintaining good electrical connection between the coil assembly and electrical components.

[0004] JP 2012-241846 A

[0005] Since electronic control devices incorporating coil assemblies are generally configured with multiple components, it is desirable for the component mounting structure to take into consideration component replacement during repair. For example, in the brake fluid pressure control device of Patent Document 1, if the repair component is a solenoid valve, the housing and components attached to the housing, such as the coil assembly, can be removed from the base as a unit, allowing the removed housing and components to be reused. To achieve this, the coil biasing member and coil assembly must be pre-assembled to the housing prior to the installation process of attaching the housing to the base.

[0006] However, if the coil biasing member and the coil assembly are assembled to the housing in advance, there is a risk that the pressing force of the coil biasing member will act as a load on the connection terminals of the coil assembly until the housing is attached to the base. Also, when the housing and components are removed as a unit from the base during repair, there is a risk that the pressing force of the coil biasing member will act as a load on the connection terminals of the coil assembly.

[0007] An object of the present invention is to solve the above-mentioned problems and to provide a coil biasing member and a mounting structure for the coil biasing member that can suppress the load on the coil assembly while preventing vibration, etc. of the coil assembly and improve the strength of the mounting structure for the coil assembly.

[0008] To solve the above problems, the present invention provides a coil biasing member disposed between a wall of the housing and a coil assembly electrically connected to an electrical component of the housing via a connection terminal. The coil biasing member includes a base attached to the wall or the coil assembly, an elastic portion extending from the base, a locking portion provided on the base, and a locking portion provided on the elastic portion that is locked to the locking portion by the pressing force of the elastic portion. When the locking portion is locked to the locking portion, the pressing force of the elastic portion applied to the coil assembly is regulated.

[0009] The coil biasing member of the present invention can apply a pressing force to the coil assembly via the elastic portion. For example, the coil biasing member of the present invention can press the coil assembly against the mounting surface of the base to which the coil assembly is attached. This prevents the coil assembly from vibrating relative to the base or housing when subjected to an external force, and can also prevent contact between the coil assembly and, for example, a solenoid valve inserted through the coil assembly.

[0010] Furthermore, by engaging the locking portion with the locking receiving portion, the load applied to the coil assembly by the pressing force of the coil biasing member can be reduced. As a result, even if the coil biasing member is pre-positioned between the coil assembly and the wall of the housing prior to the mounting process of attaching the housing to the base on which the coil assembly is mounted, the load applied by the coil biasing member to the coil assembly can be reduced. This reduces the load applied to the connection terminals of the coil assembly and the connection portions between the connection terminals and electrical components. Thus, the coil biasing member of the present invention can reduce the load on the coil assembly while preventing vibrations and the like of the coil assembly. In other words, the coil biasing member of the present invention can improve the strength of the mounting structure for the coil assembly. Furthermore, the load on the coil assembly can be effectively reduced even when repairing a device equipped with the coil assembly.

[0011] It is also preferable that the elastic portion extends from one end of the base portion toward the other end, the locking receiving portion is formed at the other end of the base portion, and the locking portion is formed at the other end of the elastic portion.

[0012] This coil biasing member has a simple structure that can reduce the load on the coil assembly while improving the strength of the mounting structure for the coil assembly, and can be easily placed in the limited space between the coil assembly and the wall of the housing.

[0013] It is also preferable that the locking portion is tongue-shaped, and the lock-receiving portion is hook-shaped and supports the locking portion from both sides.

[0014] This coil biasing member can appropriately regulate the pressing force of the elastic portion with a simple configuration, thereby reliably suppressing the load on the coil assembly.

[0015] It is also preferable that the base is attached to the wall, the elastic portion presses the coil assembly, and the base has a notch formed therein into which a fixing member of the wall is press-fitted.

[0016] In this coil biasing member, the base portion can be easily attached to the wall portion, and the assembly work is easy to perform.

[0017] To solve the above problem, the mounting structure for a coil biasing member of the present invention includes a base on which a solenoid valve is disposed, a housing attached to the base and to which a coil assembly for driving the solenoid valve is connected via a connection terminal, and a coil biasing member disposed between a wall of the housing and the coil assembly and biasing the coil assembly toward the base. The coil biasing member includes a base attached to the wall or the coil assembly, an elastic portion provided continuous with the base, a locking portion provided on the base, and a locking portion provided on the elastic portion that locks with the locking portion due to the pressing force of the elastic portion. When the locking portion locks with the locking portion, the pressing force of the elastic portion applied to the coil assembly is regulated.

[0018] In the mounting structure for the coil biasing member of the present invention, a pressing force is applied to the coil assembly via the elastic portion, so that the coil assembly can be pressed against the mounting surface of the base, which prevents the coil assembly from vibrating relative to the base or housing when subjected to an external force, and also prevents contact between the solenoid valve and the coil assembly.

[0019] Furthermore, by engaging the locking portion with the locking receiving portion, the load applied by the coil biasing member to the coil assembly can be reduced. This reduces the load on the coil assembly from the coil biasing member, even when the coil biasing member is disposed between the coil assembly and the wall of the housing prior to the mounting process of mounting the housing to the base. This reduces the load on the connection terminal of the coil assembly and the load on the connection portion between the connection terminal and the electrical component. Therefore, according to the mounting structure for the coil biasing member of the present invention, the coil biasing member can prevent vibrations and the like of the coil assembly while reducing the load on the coil assembly, thereby improving the strength of the mounting structure for the coil assembly.

[0020] It is preferable that the locking portion of the coil biasing member is engaged with the locking receiving portion in a state prior to the housing being attached to the base, and that the locking portion is released from engagement and a pressing force of the elastic portion is applied to the coil assembly when the housing is attached to the base.

[0021] This mounting structure for the coil biasing member reliably suppresses the load that the coil biasing member imparts to the coil assembly prior to the mounting process of mounting the housing to the base. Therefore, the coil biasing member can reliably suppress the load on the coil assembly while preventing vibrations and the like of the coil assembly, thereby improving the strength of the mounting structure for the coil assembly.

[0022] According to the coil biasing member and mounting structure for the coil biasing member of the present invention, it is possible to suppress the load on the coil assembly while preventing vibration, etc. of the coil assembly, and as a result, it is possible to improve the strength of the mounting structure for the coil assembly.

[0023]

[0023] Figure 1 is a partial cross-sectional explanatory view for explaining a coil biasing member and an attachment structure of the coil biasing member according to one embodiment of the present invention. Figure 2 is a perspective view showing the coil biasing member arranged on the top surface of a coil assembly. Figure 3 is a view showing the coil biasing member, where (a) is a plan view and (b) is a front view. Figure 4 is a view showing the coil biasing member, where (a) is a bottom view and (b) is a rear view. Figure 5 is a side view of the coil biasing member. Figures showing the action of the pressing force of the coil biasing member, where (a) is a front view showing the coil biasing member in a stage before the housing is attached to the base, and (b) is a front view showing the coil biasing member in a state where the housing has been assembled to the base.

[0024] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. Hereinafter, an electronic control device for a brake fluid pressure control device mounted on a vehicle will be described as an example of a device to which a coil biasing member is to be assembled, but this is not intended to limit the device to which the coil biasing member is to be assembled. Examples of vehicles include motorcycles, three-wheeled motor vehicles, all-terrain vehicles (ATVs), and four-wheeled motor vehicles, as well as hybrid vehicles that also use a motor, vehicles powered solely by a motor, and vehicles powered solely by a fuel cell or an engine (internal combustion engine).

[0025] Fig. 1 is a partial cross-sectional view illustrating a coil biasing member 10 according to this embodiment and an attachment structure for the coil biasing member 10. Fig. 2 is a perspective view showing the coil biasing member 10 arranged on the upper surface 23 of a coil assembly 20. Note that in Fig. 1, the "up-down direction" is shown for convenience with the side on which the housing 1 is arranged as the upper side and the side on which the base 5 is arranged as the lower side, but the actual attachment direction of the coil biasing member 10 is not limited to this "up-down direction."

[0026] As shown in Figure 1, a brake fluid pressure control device 50 incorporating a coil biasing member 10 includes a housing 1 and a base 5. The housing 1 is, for example, a box-shaped member integrally molded from a resin material. A coil assembly 20 is attached to the housing 1 via the coil biasing member 10.

[0027] An intermediate wall 2 is formed inside the housing 1 as a wall portion that divides the internal space of the housing 1. Bus bars 3 and electrical components such as terminals (not shown) are provided by molding or the like on the intermediate wall 2. Terminal portions 3a of the bus bars 3 are exposed inside connection terminal insertion portions 2c formed on the intermediate wall 2.

[0028] A coil biasing member 10 is attached to the lower surface 2a of the intermediate wall 2. A coil assembly 20 is disposed below the coil biasing member 10 (see FIGS. 1 and 2). As shown in FIG. 2, the coil assembly 20 includes a pair of connection terminals 22, 22 erected on a terminal portion 21. As shown in FIG. 1, the connection terminals 22, 22 are each electrically connected to the terminal portion 3a (only one connection terminal 22 is shown in FIG. 1). The coil assembly 20 is pre-attached to the intermediate wall 2 by connecting the connection terminals 22, 22 to the terminal portion 3a. The coil assembly 20 then comes into contact with the mounting surface 5a of the base 5 when the housing 1 is attached to the base 5.

[0029] The connection terminals 22, 22 are not limited to those connected to the terminal portion 3a, but may have a press-fit portion configured to be inserted by pressure into an insertion hole of a wiring board, etc. In this case, too, the coil assembly 20 is attached in advance to the housing 1 via the press-fit portion.

[0030] The base 5 is formed from a metal member such as aluminum or an aluminum alloy, and functions as a counterpart member to which the housing 1 is attached. A solenoid valve 6, which functions as a component of the hydraulic circuit, is attached to the base 5. The solenoid valve 6 is fixed by inserting its lower portion into a mounting hole (not shown) provided in the base 5, and the rest of the solenoid valve 6 protrudes upward from the mounting surface 5a of the base 5. When the housing 1 is attached to the base 5, the portion of the solenoid valve 6 that protrudes upward from the mounting surface 5a is inserted into an insertion hole 20a (see FIG. 2) provided in the center of the coil assembly 20.

[0031] Next, the coil biasing member 10 will be described. Fig. 3(a) is a plan view of the coil biasing member 10, and (b) is a front view. Fig. 4(a) is a bottom view of the coil biasing member 10, and (b) is a rear view. Fig. 5 is a side view of the coil biasing member 10. Fig. 6(a) is a front view showing the coil biasing member 10 in a state prior to mounting the housing 1 to the base 5, and Fig. 6(b) is a front view showing the coil biasing member 10 in a state after the housing 1 has been assembled to the base 5.

[0032] The coil biasing member 10 is formed by bending a plate-shaped spring member. The coil biasing member 10 acts to press the coil assembly 20 toward (press against) the mounting surface 5a of the base 5. For this purpose, the coil biasing member 10 is disposed between the coil assembly 20 and the intermediate wall 2 of the housing 1, as shown in FIG. 1 . The coil biasing member 10 is fixed to the lower surface 2a of the intermediate wall 2 of the housing 1 prior to the mounting process of mounting the housing 1 to the base 5.

[0033] As shown in FIGS. 3 , 4 , and 5 , the coil biasing member 10 includes a base 11, an elastic portion 12, and a spring portion 13. Hereinafter, the side of the base 11 or the elastic portion 12 where the spring portion 13 is provided will be referred to as the “first end,” and the opposite side will be referred to as the “second end.” The elastic portion 12 is connected to one end of the base 11 via the spring portion 13 and extends from the spring portion 13 toward the other end of the base 11. A pair of opposing locking receiving portions 14, 14 are formed at the other end of the base 11. Furthermore, a locking portion 15 that locks with the locking receiving portions 14, 14 is formed at the other end of the elastic portion 12. The locking portions 15 are locked with the locking receiving portions 14, 14, thereby restricting the downward pressing force (biasing force) of the coil biasing member 10 that accompanies the restoration of the elastic portion 12.

[0034] The base 11 is a portion fixed to the lower surface 2a of the intermediate wall 2 (see FIG. 1). As shown in FIG. 3(a), the base 11 has a substantially U-shape in plan view. The base 11 includes a pair of linear portions 11d, 11d and a connecting portion 11e connecting the pair of linear portions 11d, 11d.

[0035] A protruding piece 11c is formed on each outer portion of the straight line portions 11d, 11d (the portion opposite the side where the straight line portions 11d, 11d face each other). The protruding piece 11c functions as an auxiliary attachment portion against which an attachment jig or a finger (not shown) is pressed when attaching the coil biasing member 10 to the underside 2a of the intermediate wall 2. As shown in FIG. 4(a) , the protruding piece 11c protrudes laterally from the outer portions of the straight line portions 12d, 12d (described later) of the elastic portion 12, even when viewed from the bottom. The protruding piece 11c may be omitted.

[0036] As shown in FIG. 3( a), a substantially circular recessed notch 11a is formed in the center of the inner portion of the connecting portion 11e (the portion continuing from the side portions on the opposing sides of the straight portions 11d, 11d). This notch 11a functions as a fixing portion for fixing the coil biasing member 10 to the intermediate wall 2 of the housing 1. As shown in FIGS. 1 and 2, a cylindrical press-fit protrusion 2f serving as a fixing member protruding from the lower surface 2a of the intermediate wall 2 is press-fitted into the notch 11a. Also, as shown in FIG. 3( a), guide holes 11b, 11b are formed on both sides of the notch 11a. The guide holes 11b, 11b function as a guide portion when attaching the coil biasing member 10 to the intermediate wall 2 and as a rotation prevention portion for the base 11 relative to the intermediate wall 2. As shown in FIGS. 1 and 2, protrusions 2g, 2g protruding from the lower surface 2a of the intermediate wall 2 are inserted into the guide holes 11b, 11b.

[0037] The locking receiving portions 14, 14 are integrally formed on the other end of the base 11. The locking receiving portions 14, 14 are portions to which the locking portion 15 of the elastic portion 12 is locked with a pressing force. As shown in FIG. 3(b), the locking receiving portions 14, 14 are hook-shaped and support the locking portion 15 from both sides. The coil biasing member 10 is attached to the intermediate wall 2 with the locking portion 15 locked to the locking receiving portions 14, 14 (see FIGS. 1 and 6(a)). The height dimension L1 of the coil biasing member 10 is set so that the elastic portion 12 lightly abuts against the upper surface 23 of the coil assembly 20 when attached to the intermediate wall 2 (with the locking portion 15 locked to the locking receiving portions 14, 14) (see FIGS. 5 and 6(a)). On the other hand, when the housing 1 is assembled to the base 5, the elastic portion 12 of the coil biasing member 10 is pushed upward by the coil assembly 20. In other words, the height dimension L2 (see FIG. 6( b)) of the coil biasing member 10 in the state where the housing 1 is assembled to the base 5 is smaller than the height dimension L1 of the coil biasing member 10 in the state prior to assembly of the housing 1 to the base 5.

[0038] The elastic portion 12 is a portion that presses against the upper surface 23 of the coil assembly 20 (see FIG. 1). As shown in FIG. 4(a), the elastic portion 12 has a generally U-shape when viewed from the bottom. The elastic portion 12 includes a pair of straight portions 12d, 12d and a connecting portion 12e that connects the pair of straight portions 12d, 12d.

[0039] The inner portion of the connecting portion 12e (the portion continuing from the side portions on the opposing sides of the straight portions 12d, 12d) is located closer to the other end than the inner portion of the connecting portion 11e of the base 11. In this manner, the notch 11a of the base 11 is exposed inside the inner portion of the connecting portion 12e in a bottom view, so that when assembling the coil biasing member 10 to the housing 1, it can be visually confirmed that the press-fit protrusion protruding from the lower surface 2a of the intermediate wall 2 is press-fit into the notch 11a. As shown in FIG. 5 , a coil elastic portion 12a that bulges downward in a curved protrusion shape is formed on the lower surface of the connecting portion 12e. The coil elastic portion 12a abuts against the upper surface 23 of the coil assembly 20.

[0040] As shown in Figures 4(a) and 4(b), the locking portion 15 is integrally formed with the other end of the elastic portion 12. As shown in Figures 3(b) and 5, the locking portion 15 rises upward from the other end of the elastic portion 12 and abuts against the lock receiving portions 14, 14 of the base portion 11 due to the pressing force of the elastic portion 12 (i.e., the restoring force of the coil biasing member 10 acting between the intermediate wall 2 and the coil assembly 20 in a direction separating the intermediate wall 2 and the coil assembly 20). The portion of the locking portion 15 that abuts against the lock receiving portions 14, 14 has a substantially rectangular tongue shape in plan view, as shown in Figure 3(a).

[0041] Next, the action of the coil biasing member 10 will be described with reference to Figures 6(a) and (b). As shown in Figure 6(a), in the state before the housing 1 is attached to the base 5, the distance between the lower surface 2a of the intermediate wall 2 and the upper surface (top surface) 23 of the coil assembly 20 is maintained at a distance corresponding to the height dimension L1 of the coil biasing member 10. As a result, in the state before the housing 1 is attached to the base 5, no pressing force (biasing force) acts on the coil assembly 20.

[0042] Meanwhile, the coil biasing member 10 is configured to apply a pressing force to the coil assembly 20 when the housing 1 is attached to the base 5. When the housing 1 is attached to the base 5, the coil assembly 20 is attached to the attachment surface 5a of the base 5, and as shown in FIG. 6(b), the elastic portion 12 is pushed upward by the coil assembly 20. As a result, the distance between the lower surface 2a of the intermediate wall 2 and the upper surface 23 of the coil assembly 20 becomes a height dimension L2 that is smaller than the height dimension L1 of the coil biasing member 10. In this state, the locking portion 15 is separated from the lock-receiving portions 14, 14, and the restriction by the locking is released, so the elastic portion 12 is free and applies a pressing force (the restoring force of the coil biasing member 10) to the coil assembly 20. As a result, the coil assembly 20 is pressed against the attachment surface 5a of the base 5.

[0043] According to the coil biasing member 10 and the mounting structure of the coil biasing member 10 of this embodiment described above, the coil assembly 20 can be pressed against the mounting surface 5a of the base 5, and the coil assembly 20 can be brought into contact with the mounting surface 5a of the base 5 with a pressing force. This makes it possible to prevent the coil assembly 20 from vibrating relative to the base 5 or the housing 1 when subjected to an external force, and ultimately to prevent contact between the solenoid valve 6 inserted through the coil assembly 20 and the coil assembly 20.

[0044] Furthermore, the engagement of the locking portions 15 with the locking receiving portions 14, 14 reduces the load on the coil assembly 20 due to the pressing force. This reduces the load on the coil assembly 20 from the coil biasing member 10, even when the coil biasing member 10 is disposed between the coil assembly 20 and the intermediate wall 2 of the housing 1 prior to the mounting process of mounting the housing 1 to the base 5 (see FIG. 1 ). That is, since bending deformation of the connection terminals 22, 22 can be reduced, the load on the connection terminals 22, 22 of the coil assembly 20 and on the connection portions between the connection terminals 22, 22 and the terminal portion 3 a can be reduced. Therefore, the coil biasing member 10 of this embodiment can reduce the load on the coil assembly 20 while preventing vibrations and the like of the coil assembly 20 with the coil biasing member 10, thereby improving the strength of the mounting structure of the coil assembly 20. Furthermore, the load on the coil assembly 20 can be effectively reduced even during device repair.

[0045] Furthermore, with a simple configuration in which the elastic portion 12 extends from one end of the base portion 11 toward the other end, the locking receiving portions 14, 14 are formed at the other end of the base portion 11, and the locking portion 15 is formed at the other end of the elastic portion 12, it is possible to improve the strength of the mounting structure of the coil assembly 20 while suppressing the load on the coil assembly 20. Furthermore, the coil biasing member 10 can be easily arranged in the limited space between the coil assembly 20 and the intermediate wall 2 of the housing 1.

[0046] Furthermore, the simple configuration in which the locking portion 15 is tongue-shaped and the lock-receiving portions 14, 14 support the locking portion 15 from both sides makes it possible to suitably regulate the pressing force of the elastic portion 12. Therefore, the load on the coil assembly 20 can be reliably suppressed.

[0047] Furthermore, the base 11 can be easily attached to the intermediate wall 2 by fitting the press-fit projection 2f of the intermediate wall 2 into the notch 11a, making the assembly work easy.

[0048] Furthermore, according to the mounting structure of the coil biasing member 10 of this embodiment, the load on the coil assembly 20 from the coil biasing member 10 can be reliably suppressed in the stage prior to the mounting process of mounting the housing 1 to the base 5. Therefore, the load on the coil assembly 20 can be reliably suppressed while preventing vibrations and the like of the coil assembly 20 by the coil biasing member 10, and the strength of the mounting structure of the coil assembly 20 can be improved.

[0049] While the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified as appropriate without departing from the spirit of the present invention. For example, in the above embodiments, the coil biasing member 10 is provided in a configuration in which the coil assembly 20 is attached to the housing 1. However, the present invention is not limited to this, and can be suitably applied to a configuration in which the coil assembly 20 is attached to the mounting surface 5 a of the base 5 in advance, and the housing 1 to which the coil biasing member 10 is attached is then attached to the base 5.

[0050] Furthermore, in the above embodiment, the base 11 of the coil biasing member 10 is fixed (attached) to the lower surface 2a of the intermediate wall 2, and the elastic portion 12 presses against the upper surface 23 of the coil assembly 20, but this is not limiting, and the coil biasing member 10 may be arranged upside down, with the base 11 fixed (attached) to the upper surface 23 of the coil assembly 20, and the elastic portion 12 pressing against the lower surface 2a of the intermediate wall 2. In this case as well, the same effects as those of the above embodiment can be obtained.

[0051] Furthermore, the coil biasing member 10 may take various forms as long as it includes the base portion 11, the elastic portion 12, the lock receiving portions 14, 14, and the lock portion 15.

[0052] Furthermore, the lock receiving portions 14 and the locking portion 15 may have various configurations as long as they are configured to regulate the pressing force of the elastic portion 12 .

[0053] Furthermore, the base 11 is fixed to the intermediate wall 2 by being press-fitted into the notch 11a in the above embodiment, but the present invention is not limited to this and various fixing structures can be adopted.

[0054] REFERENCE SIGNS LIST 1 Housing 2 Intermediate wall (wall portion) 3 Bus bar (electrical component) 10 Coil biasing member 11 Base portion 11a Notch portion 12 Elastic portion 14 Locking receiving portion 15 Locking portion 20 Coil assembly 22 Connection terminal 23 Upper surface

Claims

1. A coil biasing member disposed between a coil assembly electrically connected to an electrical component of a housing via a connection terminal and a wall of the housing, comprising: a base attached to the wall or the coil assembly; an elastic portion extending from the base; a locking receiving portion provided on the base; and a locking portion provided on the elastic portion and locked to the locking receiving portion by the pressing force of the elastic portion, wherein the pressing force of the elastic portion applied to the coil assembly is regulated by the locking portion being locked to the locking receiving portion.

2. A coil biasing member as described in claim 1, characterized in that the elastic portion extends from one end of the base toward the other end, the locking receiving portion is formed at the other end of the base, and the locking portion is formed at the other end of the elastic portion.

3. A coil biasing member as described in claim 1 or 2, characterized in that the locking portion is tongue-shaped, and the lock-receiving portion is hook-shaped and supports the locking portion from both sides.

4. A coil biasing member as described in claim 1, characterized in that the base is attached to the wall portion, the elastic portion presses the coil assembly, and the base is formed with a notch into which a fixing member of the wall portion is press-fitted.

5. A mounting structure for a coil biasing member comprising: a base on which a solenoid valve is disposed; a housing attached to the base and to which a coil assembly for driving the solenoid valve is connected via a connection terminal; and a coil biasing member disposed between a wall of the housing and the coil assembly and biasing the coil assembly towards the base, wherein the coil biasing member comprises: a base attached to the wall; an elastic portion provided continuous with the base and pressing the coil assembly; a locking portion provided on the base; and a locking portion provided on the elastic portion and locked to the locking portion by the pressing force of the elastic portion, wherein the pressing force of the elastic portion is regulated by the locking portion being locked to the locking portion.

6. The mounting structure of a coil biasing member as described in claim 5, characterized in that, in a state prior to mounting the housing to the base, the locking portion is engaged with the locking receiving portion, and, when the housing is mounted to the base, the locking portion is released and a pressing force of the elastic portion is applied to the coil assembly.

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