JP4520914B2 - Brake hydraulic pressure control device for vehicles - Google Patents

Description

  The present invention relates to a vehicular brake hydraulic pressure control device in which a coil assembly externally fitted to a solenoid valve is fixed to a housing via a connection terminal.

  In general, a vehicular brake hydraulic pressure control device includes a base body on which an oil passage is formed, an electromagnetic valve that appropriately blocks and opens the oil passage in the base body, and a coil assembly that moves the valve mechanism in the electromagnetic valve with magnetic force. It is mainly composed of a solid body and a housing provided with a control board for controlling supply / stop of current to the coil assembly. As such a brake fluid pressure control device for a vehicle, conventionally, a part of a solenoid valve is mounted in a mounting hole of a base, and the other part protrudes from the surface of the base, and a connection terminal of a coil assembly is the control of the housing. A structure is known in which a coil assembly is fixed in a state of being suspended from a housing via a connection terminal by projection welding to a connection terminal connected to a substrate (see Patent Document 1). Such a vehicular brake hydraulic pressure control device is assembled so that a substantially cylindrical coil assembly is externally fitted to the projecting electromagnetic valve when the housing is attached to the base. .

JP 2003-154929 A

  By the way, in the conventional structure, although the coil assembly is fixed to the housing via the connection terminal, the other parts are not fixed, and further, the fitting hole of the coil assembly and the solenoid valve are not fixed. There is a gap between them. For this reason, when excessive vibration is applied to the vehicle brake hydraulic pressure control device while the vehicle is running, there is a problem that the coil assembly is shaken and a load is repeatedly applied to the connection terminal and its welded portion.

  Therefore, in the present invention, even when excessive vibration is applied to the vehicle brake fluid pressure control device, the vehicle brake fluid can suppress the vibration of the coil assembly and suppress the load on the connection terminal. An object is to provide a pressure control device.

The invention according to claim 1 of the present invention that solves the above problems includes a base body provided with a hydraulic circuit therein, a plurality of electromagnetic valves disposed at one end face of the base body at a predetermined interval, A coil assembly that is externally fitted to each of the electromagnetic valves and disposed with a predetermined gap between adjacent ones; a housing that is attached to one end surface of the base and covers the electromagnetic valve; and A control unit fixed in the housing and controlling the operation of the solenoid valve by controlling energization to the coil assembly, wherein the connection terminal of the coil assembly and the connection terminal of the control unit are electrically connected A vehicle brake hydraulic pressure control device comprising a housing unit having the coil assembly, the control unit, and the housing by being connected between the one end surface of the base and the coil assembly. Koi Is Banegakai set, on the one end face of the substrate, the electromagnetic valve mounting hole ring groove is formed on the inner peripheral surface is provided, the solenoid valve is mounted is fitted into the solenoid valve mounting hole The coil spring is integrally formed with a retaining ring portion that prevents the solenoid valve from coming off by engaging with the ring groove .

According to the first aspect of the present invention, since the coil spring is interposed between the one end surface of the base or between the electromagnetic valve and the coil assembly, the coil assembly is held well and vibration is suppressed. Is done.
Therefore, for example, even when shock acceleration is applied to the vehicle brake hydraulic pressure control device when the vehicle is traveling, the vibration of the coil assembly is attenuated by the coil spring, and the load on the connection terminal is reduced. The
According to the first aspect of the present invention, the retaining ring part is integrally formed with the coil spring, and the retaining ring part is engaged with the ring groove of the electromagnetic valve mounting hole formed in the base body. If the coil spring is installed in the solenoid valve mounting hole, the retaining ring portion also serves as a retaining mechanism for the solenoid valve, so that the number of parts is reduced, and the cost and assembly man-hours are reduced.

According to a second aspect of the present invention, there is provided a base body provided with a hydraulic circuit therein, a plurality of electromagnetic valves disposed at one end face of the base body at predetermined intervals, and externally fitted to the respective electromagnetic valves. A coil assembly that has a magnetic path frame and is disposed with a predetermined gap between adjacent one another, a housing that is attached to one end surface of the base body and covers the electromagnetic valve, and in the housing A control unit that is fixed and controls the operation of the solenoid valve by controlling energization to the coil assembly, and the connection terminal of the coil assembly and the connection terminal of the control unit are electrically connected A brake fluid pressure control device for a vehicle comprising a housing unit having the coil assembly, the control unit, and the housing, wherein the porous elastic member has a sound absorbing effect by attenuating vibration of the coil assembly But, Wherein the serial base end face and the solenoid valve that is interposed between the coil assembly.

According to the second aspect of the present invention, the lower part of the coil assembly is supported by the porous elastic member by interposing the porous elastic member between the one end surface of the base or the electromagnetic valve and the coil assembly. The
Here, as the porous elastic member having such a sound absorbing effect, a sponge-like sponge, felt, glass wool, and flexible or elastic rubber or synthetic resin are assumed to be porous.

According to the first aspect of the present invention, shock acceleration is applied to the vehicle brake hydraulic pressure control device by interposing the coil spring between the one end surface of the base or the electromagnetic valve and the coil assembly. Even in this case, it is possible to provide a vehicular brake hydraulic pressure control device that effectively attenuates the vibration of the coil assembly and suppresses the load on the connection terminal.
Further, according to the invention described in claim 1, by integrally forming a retaining ring portion for retaining the electromagnetic valve on the coil spring, the number of parts of the vehicle brake fluid pressure control device can be reduced, Cost reduction and assembly man-hours can be reduced.

According to the second aspect of the present invention, the vibration of the coil assembly is effectively damped by interposing the porous elastic member between the one end surface of the base or the electromagnetic valve and the coil assembly. It is possible to provide a vehicle brake hydraulic pressure control device that suppresses a load on a connection terminal.

  Next, a first embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the drawings to be referred to, FIG. 1 is an exploded perspective view showing a vehicle brake hydraulic pressure control device according to the present embodiment.

  As shown in FIG. 1, the vehicle brake hydraulic pressure control device A includes a base body 100 provided with a hydraulic circuit therein, and a housing unit 10 mounted on a first mounting surface (one end face) 101 of the base body 100. An electric motor 20 that is mounted on the second mounting surface 102 of the base body 100 and drives a pump (not shown) in the base body 100 is mainly provided.

  The base body 100 is a metal part formed in a substantially rectangular parallelepiped, and eight electromagnetic valves 30 (in detail, arranged in two rows and four columns and arranged at predetermined intervals on the first mounting surface 101 thereof. The normally open solenoid valve 30A and the normally closed solenoid valve 30B are provided with only one each shown). The structure around these solenoid valves 30 will be described in detail later.

  The housing unit 10 includes a housing main body 11 having a first housing portion S1 that opens toward the base body 100 and a second housing portion S2 that opens toward the opposite side of the base body 100, and a first housing portion 11 of the housing main body portion 11. The electronic control unit 12 accommodated in the two accommodating portions S2, the lid portion 13 for closing the second accommodating portion S2 of the housing body 11, and a coil assembly 40 (see FIG. 2) described later are mainly configured. ing. Here, the housing body 11 and the lid 13 correspond to a “housing” in the claims.

The housing body 11 is formed in a substantially cylindrical shape, and a partition wall 11a for partitioning the internal space into the first housing part S1 and the second housing part S2 is formed in the center part thereof. A rubber seal (elastic material) 50 is fitted to the peripheral edge (specifically, the rubber seal mounting groove 11b shown in FIG. 2) of the housing main body 11 on the first housing portion S1 side. Thus, when the housing main body 11 covers each electromagnetic valve 30 and the like, the space between the housing main body 11 and the base body 100 is sealed with the rubber seal 50.
Further, the partition wall 11a of the housing body 11 is appropriately provided with an insertion hole 11c and a connection terminal 11d for fixing the coil assembly 40 shown in FIG. 2 while being inserted from the first housing portion S1 side. Here, the connection terminal 11d is formed as a part of a metal plate embedded in the resin housing body 11.
A coil spring 60 is interposed between the base body 100 and the coil assembly 40.
The structure of the coil spring 60 and the coil assembly 40 will be described in detail later.

  The electronic control unit 12 is a control board for controlling the operation of each electromagnetic valve 30 and the electric motor 20 by appropriately controlling the current (energization) supplied to the coil assembly 40 and the electric motor 20. The housing main body 11 is fixed to the second housing part S2 side. The electronic control unit 12 is electrically connected to the coil assembly 40 and the electric motor 20 through a metal plate embedded in the housing body 11 described above.

  Hereinafter, the structure around the electromagnetic valve 30 will be described in detail with reference to FIGS. In the drawings to be referred to, FIG. 2 is an enlarged cross-sectional view of the main part showing the structure around the electromagnetic valve, FIG. 3 is a plan view (a) showing the configuration of the coil spring, and a bottom view (b), and FIG. It is a principal part expanded sectional view of FIG. 2 for demonstrating the attachment state of a coil spring.

  As shown in FIG. 2, the electromagnetic valve 30 includes a guide cylinder 31 to which the coil assembly 40 is externally fitted, and a valve housing 32 formed by expanding the diameter of the guide cylinder 31, and has a substantially cylindrical shape with a step. Is formed. The guide cylinder 31 is provided with a movable core (not shown) that is moved by the magnetic force generated by the coil assembly 40, and the valve housing 32 is shown to open and close the valve as the movable core moves. A valve mechanism is provided.

  In the solenoid valve 30, a valve housing 32 having an enlarged diameter is embedded in a solenoid valve mounting hole 111 formed in the first mounting surface 101 of the base body 100, and the guide cylinder 31 protrudes from the first mounting surface 101. Thus, the substrate 100 is fixed. Specifically, as shown in FIG. 4, the electromagnetic valve 30 is fitted and fixed to the ring groove 111 a near the opening end of the electromagnetic valve mounting hole 111 at the corner 33 on the upper side (the guide cylinder 31 side) of the valve housing 32. By being engaged with the retaining ring portion 62 of the coil spring 60, the coil spring 60 is fixed to the base body 100 while being retained.

As shown in FIG. 3A, the coil spring 60 is integrally formed with a spring portion 61 and a retaining ring portion 62. Specifically, the spring part 61 is formed by spirally winding a spring material, and a retaining ring part 62 is formed integrally with the spring part 61, and the retaining ring part 62 is a spring. It has a ring shape slightly enlarged in diameter on the concentric circle with the portion 61. The retaining ring portion 62 has a radial elastic repulsion force in such a configuration.
In the present embodiment, the spring part 61 and the retaining ring part 62 are integrally formed of a single spring material, but the present invention is not limited to this, and a coil spring and a clip such as a C ring are provided. It can also be formed of separate members and can be integrally formed by fixing them together by welding or the like.
Further, in the present embodiment, the retaining ring portion 62 has a circular cross-sectional shape, but is not limited thereto, and may have a rectangular cross-sectional shape.

Next, the operation of the coil spring in which the retaining ring portion according to this embodiment is integrally formed will be described.
As shown in FIG. 4, in the present embodiment, a coil spring 60 is interposed between the solenoid valve mounting hole 111 of the base body 100 and the coil assembly 40, and the coil assembly 40 is applied by the biasing force of the coil spring 60. Is pressed toward the housing unit 10 (see FIG. 2).
Note that the preload and the urging force applied to the coil spring 60 can be used for a vehicle in which the vehicle brake hydraulic pressure control device according to the present invention is mounted and the use conditions so that the coil assembly 40 can be satisfactorily held. It is set appropriately according to the above.

Here, in the coil spring 60, a spring part 61 and a retaining ring part 62 are integrally formed, and the retaining ring part 62 is engaged with a ring groove 111a of an electromagnetic valve mounting hole 111 formed in the base body 100. Thus, the solenoid valve mounting hole 111 is fixed. That is, the retaining ring portion 62 of the coil spring 60 is reduced in diameter and mounted in the ring groove 111a, and the coil spring 60 is stabilized in the solenoid valve mounting hole 111 by the repulsive force acting in the direction in which the retaining ring portion 62 expands in diameter. Fixed.
In this state, the solenoid valve 30 mounted in the solenoid valve mounting hole 111 is prevented from coming off by the retaining ring portion 62 of the coil spring 60 at the same time. That is, the upper corner portion 33 of the valve housing 32 of the solenoid valve 30 is engaged with the retaining ring portion 62 of the coil spring 60 fitted and fixed in the ring groove 111a of the solenoid valve mounting hole 111, and the retaining ring portion. 62 also serves to prevent the electromagnetic valve 30 from coming off.

According to the above, the following effects can be obtained in the present embodiment.
Since the coil assembly 40 is stably held by urging (pressing) the coil assembly 40 toward the housing unit 10 by the coil spring 60, shock acceleration is applied to the vehicle brake hydraulic pressure control device A. Even when is added, the vibration of the coil assembly 40 can be effectively attenuated and the load on the connection terminal 43 can be suppressed.

  Furthermore, since the retaining ring portion 62 formed on the coil spring 60 can fix the coil spring 60 to the solenoid valve mounting hole 111 and prevent the solenoid valve 30 from coming off, the number of parts can be reduced and the cost can be reduced. And the assembly man-hour can be reduced.

Subsequently, a second embodiment of the present invention will be described with reference to the drawings as appropriate. In the drawings to be referred to, FIG. 5 is an enlarged cross-sectional view showing a main part of a structure around an electromagnetic valve of a vehicle brake hydraulic device according to a second embodiment of the present invention.
In addition, the same code | symbol is attached | subjected about the part which overlaps with the brake fluid pressure control apparatus for vehicles which concerns on 1st Embodiment, and the overlapping description is abbreviate | omitted.

In the first embodiment, a coil spring 60 is used to bias the coil assembly 40 toward the housing unit 10 (see FIG. 2), whereas in the second embodiment, as shown in FIG. Further, instead of the coil spring 60, sponge rubbers 81 and 82 as porous elastic members having a sound absorbing effect while effectively attenuating the vibration of the coil assembly 40 are used.
The sponge rubber 81 is formed in a ring shape surrounding the electromagnetic valve 30, and is disposed between the first mounting surface 101 of the base body 100 and the coil assembly 40. The sponge rubber 82 is formed in a ring shape surrounding the electromagnetic valve 30, and is disposed between the upper step 34 of the valve housing 32 of the electromagnetic valve 30 and the magnetic path frame 44 of the coil assembly 40. .
In the present embodiment, the sponge rubbers 81 and 82 are provided between the first mounting surface 101 of the base body 100 and the coil assembly 40 and on the upper step 34 of the valve housing 32 of the electromagnetic valve 30 and the coil assembly. Although it is arrange | positioned both between 40 magnetic path frames 44, either one may be sufficient. Further, in the present embodiment, the clip C is mounted in the ring groove 111 a of the electromagnetic valve mounting hole 111 of the base body 100 to prevent the electromagnetic valve 30 from coming off.

  In the second embodiment, sponge rubbers 81 and 82 are used in place of the coil spring 60 (see FIGS. 4 and 5), so that the sponge rubbers 81 and 82 are porous and have a sound absorbing effect. Since it has flexibility or elasticity, it is easily deformed, and the coil assembly 40 is urged toward the housing unit 10 (see FIG. 2) by the repulsive force due to the deformation.

  Therefore, according to the second embodiment of the present invention, the vibration of the coil assembly 40 is effectively attenuated, the load on the connection terminal 43 is suppressed, and the operation sound of the electromagnetic valve 30 is absorbed and attenuated. Thus, since noise diffusion and reflection can be reduced, it is possible to provide a vehicle brake hydraulic pressure control device with quiet operation noise.

Subsequently, a modification of the second embodiment will be described. FIG. 6 is an enlarged cross-sectional view of a main part showing a structure around a solenoid valve according to a modification of the second embodiment of the present invention.
In the second embodiment, the sponge rubbers 81 and 82 are disposed between the base body 100 or the electromagnetic valve 30 and the coil assembly 40 (see FIG. 5). In this modification, as shown in FIG. The whole gap between the base body 100 and the electromagnetic valve 30 and the coil assembly 40 is filled with glass wool (porous elastic member) 83. The glass wool 83 can be mounted in a three-dimensional shape in advance so as to fit into the gap in consideration of assemblability.
Thus, by filling the glass wool 83 in the entire gap, the coil assembly 40 can be held more stably and the sound absorbing effect can be further enhanced.

As mentioned above, this invention is implemented in various forms, without being limited to the said embodiment.
For example, in the first embodiment, the retaining ring portion of the coil spring is mounted in the ring groove of the solenoid valve mounting hole, and the solenoid valve is prevented from slipping in that state. However, the present invention is not limited to this. Instead, it is possible to prevent the solenoid valve from slipping by fitting the retaining ring part into the ring groove provided on the solenoid valve side and engaging the retaining ring part with the solenoid valve mounting hole in this state. .

  In the second embodiment, sponge rubber is applied as the porous elastic member having a sound absorbing effect. However, the present invention is not limited to this, and a sponge made of synthetic resin may be used. In short, any material that can attenuate the vibration of the coil assembly and relieve the load on the connection terminals by suitable elastic deformation may be used. Therefore, the hardness and material of the sponge should be set according to the application and use conditions of the vehicle on which the vehicle brake hydraulic pressure control device according to the present invention is mounted.

1 is an exploded perspective view showing a vehicle brake hydraulic pressure control device according to a first embodiment of the present invention. It is a principal part expanded sectional view which shows the structure around the solenoid valve which concerns on 1st Embodiment. It is the top view (a) which shows the structure of the coil spring which concerns on 1st Embodiment, and a bottom view (b). It is the elements on larger scale of FIG. 2 for demonstrating the attachment state of the coil spring which concerns on 1st Embodiment. It is a principal part expanded sectional view which shows the structure around the solenoid valve which concerns on 2nd Embodiment. It is a principal part expanded sectional view which shows the structure around the solenoid valve which concerns on the modification of 2nd Embodiment.

Explanation of symbols

10 Housing unit 11 Housing body (housing)
11d Connection terminal 12 Electronic control unit (control unit)
13 Lid (housing)
DESCRIPTION OF SYMBOLS 20 Electric motor 30 Solenoid valve 31 Guide cylinder 32 Valve housing 33 Corner | angular part 34 Step part 40 Coil assembly 43 Connection terminal 50 Rubber seal (elastic material)
60 Coil spring 61 Spring part 62 Retaining ring part 81, 82 Sponge rubber (porous elastic member)
83 Glass wool (porous elastic member)
100 Base 101 First mounting surface (one end surface)
102 Second mounting surface 111 Solenoid valve mounting hole 111a Ring groove A Vehicle brake fluid pressure control device C Clip

Claims (2)

A substrate with a hydraulic circuit inside;
A plurality of solenoid valves arranged at predetermined intervals on one end surface of the base;
A coil assembly that is externally fitted to each of the solenoid valves and disposed with a predetermined gap between adjacent ones of the solenoid valves;
A housing mounted on one end surface of the base body and covering the electromagnetic valve;
A control unit fixed in the housing and controlling the operation of the solenoid valve by controlling energization to the coil assembly;
Brake hydraulic pressure control for a vehicle in which the coil assembly, the control unit, and the housing unit including the housing are configured by electrically connecting the connection terminal of the coil assembly and the connection terminal of the control unit. A device,
A coil spring is interposed between the one end surface of the base and the coil assembly ,
The one end surface of the base is provided with a solenoid valve mounting hole in which a ring groove is formed on an inner peripheral surface,
The electromagnetic valve is mounted by being inserted into the electromagnetic valve mounting hole,
Wherein the coil spring, the brake fluid pressure control apparatus stops become retaining ring portion omission of the solenoid valve by engaging the ring groove, characterized in that it is formed integrally. A substrate with a hydraulic circuit inside;
A plurality of solenoid valves arranged at predetermined intervals on one end surface of the base;
Wherein is fitted on the solenoid valves, a coil assembly disposed at a predetermined gap between each other adjacent a magnetic path frame,
A housing mounted on one end surface of the base body and covering the electromagnetic valve;
A control unit fixed in the housing and controlling the operation of the solenoid valve by controlling energization to the coil assembly;
Brake hydraulic pressure control for a vehicle in which the coil assembly, the control unit, and the housing unit including the housing are configured by electrically connecting the connection terminal of the coil assembly and the connection terminal of the control unit. A device,
Brake hydraulic pressure control characterized in that a porous elastic member having a sound absorbing effect by attenuating vibration of the coil assembly is interposed between one end face of the base or between the electromagnetic valve and the coil assembly apparatus.

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