JP2015174518A - reservoir tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reservoir tank with improved assemblability.SOLUTION: A reservoir tank 1 attached to a vehicle body through a plate-like bracket 10 includes: a reservoir body 3 in which a brake fluid is stored; and a hook-shaped attachment part 20 engaged with the bracket 10. An attachment space 31b, to which the bracket 10 is attached, is provided at the reservoir body 3. The attachment part 20 is provided at the attachment space 31b and includes a hook piece 22 which resiliently biases the bracket 10 in a plate thickness direction of the bracket 10.

Description

  The present invention relates to a reservoir tank.

Conventionally, as a reservoir tank, what is used for a master cylinder for vehicles and a hydraulic control device for vehicles is known (for example, refer to patent documents 1 and 2).
Patent Documents 1 and 2 disclose a configuration in which the reservoir tank is fixed to the vehicle body side by inserting a bracket on the vehicle body side into a mounting portion provided on the reservoir tank side.

JP 2009-262880 A Japanese Utility Model Publication No. 5-14933

  In the reservoir tanks of Patent Documents 1 and 2, if there is a dimensional tolerance between the mounting part and the thickness of the bracket, there is a risk of rattling or the mounting part may come off from the bracket during assembly. There was a risk of lowering.

  The present invention provides a reservoir tank capable of improving assemblability by suppressing the rattling of the mounting portion relative to the bracket and the detachment of the mounting portion relative to the bracket in the configuration including the mounting portion on which the bracket is locked. This is the issue.

  The reservoir tank of the present invention created to solve such a problem is a reservoir tank that is attached to a vehicle body via a plate-shaped bracket, the reservoir body in which brake fluid is stored, and the bracket A mounting space for mounting the bracket, and the mounting portion is provided in the mounting space. It has a hook piece that elastically biases the bracket in the plate thickness direction.

  According to such a reservoir tank, when the attachment portion is locked to the bracket, the hook piece elastically urges the bracket, and thus it is preferable to prevent the attachment portion from rattling and the bracket from being detached. be able to. Therefore, the assembling property can be improved.

  Further, the mounting portion includes a narrow portion in which a distance between a front end side inner surface of the hook piece and a facing surface of the mounting space is smaller than a plate thickness of the bracket, a proximal end inner surface of the hook piece, and the It is preferable to include a wide portion having a distance from the facing surface of the mounting space equal to or greater than the thickness of the bracket. If it does in this way, since a hook piece will elastically urge a bracket in a narrow part, omission of an attaching part to a bracket can be controlled effectively by urging of a hook piece. Therefore, the assembling property can be further improved.

  Further, the mounting portion includes an inclined portion that is set so that a distance between an inner surface of the hook piece and a facing surface of the mounting space gradually increases from the distal end side to the proximal end side of the hook piece. Good. If it does in this way, since the tip side of a hook piece will elastically energize a bracket, omission of an attaching part to a bracket can be controlled effectively by energization on the tip side of a hook piece. Therefore, the assembling property can be further improved.

  Further, it is preferable that a chamfered portion is formed on the inner surface of the tip of the hook piece. If it does in this way, a bracket can be smoothly inserted in a mounting part via a chamfering part at the time of an assembly. Therefore, the assembling property can be further improved.

  The hook piece may include a protrusion that can be engaged with a recess formed in the plate thickness direction of the bracket. If it does in this way, omission of the attaching part to a bracket can be controlled.

  Further, it is preferable that the protruding portion has an inclined surface and protrudes, and the inclined surface and the recess are in contact with each other and are urged by the bracket. If it does in this way, a projection part will be effectively urged | biased by the recessed part of a bracket via an inclined surface, and omission of the attachment part with respect to a bracket can be suppressed more effectively. Therefore, the assembling property can be further improved.

  According to the present invention, it is possible to obtain a reservoir tank capable of improving the assembling performance by suppressing the backlash of the mounting portion with respect to the bracket and the detachment of the mounting portion with respect to the bracket.

It is a figure which shows the state which mounted | wore the bracket with the reservoir tank which concerns on 1st Embodiment of this invention, (a) is the perspective view seen from diagonally downward, (b) is the perspective view which showed the principal part. It is a figure which similarly shows the state which attached the reservoir tank to the bracket, changing an angle with FIG. 1, (a) is the perspective view seen from diagonally downward of the side in which an attaching part is provided, (b) showed the principal part. It is a perspective view. It is a front view of a reservoir tank. It is an enlarged front view of an attachment part. (A) and (b) are operation | movement explanatory drawings which show a mode at the time of bracket mounting | wearing. It is a figure which shows the state which mounted | wore the reservoir tank which concerns on 2nd Embodiment of this invention, (a) is the perspective view seen from diagonally downward, (b) is the perspective view which showed the principal part. (A)-(c) is an effect | action explanatory drawing which shows the mode at the time of bracket mounting | wearing.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used for the same elements, and duplicate descriptions are omitted. In the following description, when referring to “front and rear”, “left and right” and “up and down”, the direction shown in FIG. 1 is used as a reference.

(First embodiment)
As shown in FIG. 1, the reservoir tank 1 of the present embodiment is held by a bracket 10 in an engine room (not shown). The bracket 10 is supported by, for example, a side wall of an engine room below the engine hood. In the following, a reservoir tank connected to a master cylinder device provided in the hydraulic pressure control device will be exemplified, but the device to which the reservoir tank is connected is not limited.

  In the reservoir tank 1, hydraulic fluid (brake fluid) is stored. The hydraulic fluid stored in the reservoir tank 1 is supplied to the master cylinder device via a connection hose (not shown).

The reservoir tank 1 includes a reservoir body 3 having a brake fluid supply port 2 and a cap 4 that closes the supply port 2. The reservoir body 3 and the cap 4 are both made of hard resin.
In the engine room, below the reservoir tank 1, an engine, a transmission, or the like (not shown), peripheral devices thereof, an electric motor that replaces the engine, or the like is usually disposed.

  The reservoir body 3 is composed of a lower half 31 and an upper half 32 as shown in FIG. The interior of the reservoir body 3 is a liquid storage chamber. The lower half 31 and the upper half 32 are liquid-tightly joined by a flange 33 formed at the opposite end.

A protrusion 34 is provided on the lower surface 31 a of the lower half 31. The protrusion 34 is formed to be continuous with the lower end of a float guide (not shown) provided in the reservoir body 3. A float chamber is formed inside the float guide. A liquid level detecting device is disposed in the float chamber. The liquid level detection device detects that the amount of brake fluid in the reservoir body 3 has reached the lowest level within the appropriate storage range (abnormal brake fluid amount in the reservoir body 3).
The liquid level detection device includes a float (not shown) made of a lightweight material such as a foamed resin material, and a detector 35.

  The detector 35 detects that the float has been lowered to the specified position. Inside the detector 35, a reed switch (not shown) and the like are provided. The detector 35 is provided adjacent to the protruding portion 34, and a part of the detector 35 protrudes from the lower surface 31 a of the lower half 31. The reed switch operates when the float is lowered and the amount of liquid in the reservoir body 3 reaches the lowest level of the appropriate storage range. An abnormal liquid amount in the reservoir tank 1 is detected by the reed switch.

  As shown in FIG. 1A and FIG. 2A, a pair of straight tubular nipples 37 and 37 are provided at the lower rear end of the lower half 31. Each nipple 37 includes a hose joint portion to which the above-described connecting hose can be connected. Each nipple 37 is inclined so as to be downwardly inclined toward the rear of the reservoir body 3.

  Further, as shown in FIGS. 1A and 3, a fixing piece 36 is projected from the left side surface of the lower half 31. The fixed piece 36 is fixed to the bracket 10.

Flat mounting spaces 31 b and 31 c are formed on the lower surface 31 a of the lower half 31. The mounting spaces 31 b and 31 c are formed before and after the detector 35. The support portion 11 of the bracket 10 is mounted in the mounting spaces 31b and 31c so as to straddle the detector 35.
The mounting space 31b is provided with a bowl-shaped mounting portion 20. As shown in FIGS. 1B, 2 </ b> B, and 3, the mounting portion 20 protrudes from the lower surface 31 a in front of the detector 35. The mounting portion 20 can be locked to an edge portion of the notch portion 13 formed in the front flange portion 12 of the bracket 10 (see FIGS. 1 and 2).

As shown in FIGS. 3 and 4, the mounting portion 20 is formed in a substantially L shape when viewed from the front. The attachment portion 20 includes a leg portion 21 and a hook piece 22. The hook piece 22 is configured to be elastically deformable with respect to the lower half 31 in the vertical direction (the thickness direction of the bracket 10), and elastically biases the bracket 10.
The leg portion 21 has a quadrangular prism shape (see FIGS. 1B and 2B), and is suspended downward from the lower surface 31 a of the lower half 31. The hook piece 22 is formed continuously at the lower portion of the leg portion 21 and extends from the lower left side surface of the leg portion 21 toward the left side. A space S into which the bracket 10 is inserted is formed between the hook piece 22 and the lower surface 31a of the lower half 31 (opposing surface of the mounting space 31b). The space S includes a narrow portion 20A formed to be narrow, which will be described later, and a wide portion 20B formed wider than the narrow portion 20A. An opening 20 a into which the bracket 10 is inserted is formed on the tip end side of the hook piece 22.

The upper surface of the hook piece 22 is formed in a mountain shape as shown in FIG. That is, the upper surface of the hook piece 22 is configured to include a left inclined surface 22b and a right inclined surface 22c that are inclined downwardly to the left and right with a top portion 22a formed closer to the tip end side of the hook piece 22, respectively. The left inclined surface 22b is a surface from the top portion 22a to the tip of the hook piece 22. The left inclined surface 22b is formed by chamfering the opening edge at the tip of the hook piece 22. The left inclined surface 22b corresponds to a “chamfered portion” in the claims, and the right inclined surface 22c corresponds to an “inclined portion” in the claims.
The right inclined surface 22c is a surface extending from the top portion 22a to the corner portion 22d between the leg portion 21 and the hook piece 22. The right inclined surface 22c is formed with a gentler inclination angle than the left inclined surface 22b.

In the narrow portion 20A, at least the separation distance L2 between the inner surface (top portion 22a) of the hook piece 22 and the lower surface 31a of the mounting space 31b (facing surface of the mounting space 31b) is smaller than the plate thickness L3 of the bracket 10. Is set to
Further, in the wide portion 20B, the separation distance L1 between at least the proximal inner surface 22c1 (corner portion 22d) of the hook piece 22 and the lower surface 31a of the mounting space 31b (opposite surface of the mounting space 31b) is a plate thickness L3 of the bracket 10. The size is set to exceed.
That is, the relationship between the separation distances L1 and L2 and the plate thickness L3 is L1>L3> L2.

  The separation distance formed in the mounting portion 20 due to such a relationship is narrower than the plate thickness L3 from the opening 20a toward the top portion 22a, and is narrowed to the maximum at the top portion 22a (separation distance L2). It gradually spreads from the plate thickness L3 toward the portion 22d (separation distance L1). Thereby, the bracket 10 inserted in the attachment part 20 will be clamped by the urging force of the hook piece 22 (the pressure contact force of the top part 22a located in the front end side of the hook piece 22).

Since the left inclined surface 22b is a surface extending from the top portion 22a to the tip of the hook piece 22, as shown by a two-dot chain line in FIG. 5A, when the bracket 10 is inserted, the bracket 10 with respect to the left inclined surface 22b. The lower edge part 13a contacts.
The left inclined surface 22b is not necessarily provided, and the separation distance of the opening 20a is made smaller than the plate thickness L3 so that the separation distance is larger than the plate thickness L3 from the opening 20a at the tip toward the corner portion 22d. It may be set.
Further, the separation distance L1 of the base end side inner surface 22c1 (corner portion 22d) may be set to be the same as the plate thickness L3.

  Further, as shown in FIGS. 1 and 2, a groove 22 e along the longitudinal direction of the hook piece 22 is formed on the lower surface of the hook piece 22. The groove portion 22e can reduce the weight of the hook piece 22 while ensuring the strength of the hook piece 22.

An example of the bracket 10 is shown in FIGS.
The bracket 10 is made of a steel plate material or the like, and has a base portion 10a and a support portion 11 provided continuously to the base portion 10a. A bolt hole 10b through which a bolt (not shown) for fixing is inserted is formed in the base 10a. The base portion 10a is attached to the side wall or the like by screwing a bolt inserted into the bolt hole 10b into a bolt hole (not shown) formed in the side wall or the like of the engine room.

The support portion 11 is disposed so as to straddle the protruding portion 34 of the reservoir body 3 and can support the reservoir body 3. The support portion 11 has a front flange portion 12 attached to one attachment space 31b of the lower half 31 and a rear flange portion 14 (see FIG. 2A) attached to the other attachment space 31c. ing. As shown in FIG. 1B, a cutout portion 13 that is inserted into the attachment portion 20 of the reservoir body 3 is formed at the right end portion of the front flange portion 12.
The rear flange portion 14 is provided with a fixing piece 14a extending downward.
In addition, a mounting portion 11 b on which the fixed piece 36 of the reservoir body 3 is mounted is formed at the left end portion of the support portion 11. The fixing piece 36 of the reservoir body 3 is fixed to the mounting portion 11b by a fixing bolt 11c.

  Note that the shape of the bracket 10 is not limited to the above-described shape, and any shape that can support the reservoir tank 1 by having a portion that is locked to the mounting portion 20 may be used.

Next, the operation of the attachment portion 20 when the reservoir tank 1 is attached to the bracket 10 will be described.
As shown in FIG. 5A, when the reservoir tank 1 is attached to the bracket 10, the notch 13 of the bracket 10 (see FIG. 1B, hereinafter the same) is positioned on the left side of the mounting portion 20. In this state, the bracket 10 is applied to the lower surface 31 a of the lower half 31. Thereafter, the bracket 10 is moved to the right-side mounting portion 20 along the lower surface 31a.

  Then, since the plate thickness L3 of the bracket 10 is larger than the separation distance L2 of the top portion 22a of the hook piece 22, the lower edge portion 13a of the notch portion 13 comes into contact with the left inclined surface 22b of the hook piece 22. When the bracket 10 is further inserted from this state, the lower edge portion 13a of the notch portion 13 moves on the left inclined surface 22b toward the top portion 22a, and the pressing force accompanying the movement acts on the hook piece 22. As a result, the hook piece 22 is elastically deformed and moved downward, and the bracket 10 is pressed against the mounting space 31b by its restoring force (biasing force).

Thereafter, when the bracket 10 is further inserted and the lower edge portion 13a of the notch portion 13 reaches the top portion 22a of the hook piece 22, the pressing force acting on the hook piece 22 is maximized, and the hook piece 22 is further elastically downward. Deform and move. As a result, the restoring force (urging force) for pressing the bracket 10 against the mounting space 31b is maximized.
After that, when the bracket 10 is further inserted and the lower edge 13a of the notch 13 exceeds the top 22a of the hook piece 22, the top 22a contacts the lower surface 13b of the bracket 10 continuous with the lower edge 13a. Thus, the pressing force due to the contact acts on the hook piece 22 through the top portion 22a. Accordingly, the state in which the hook piece 22 is elastically deformed (moved) downward is continuously maintained. That is, a restoring force (biasing force) due to elastic deformation of the hook piece 22 is applied to the lower surface 13b of the bracket 10 through the top portion 22a. Thereby, the latching state of the bracket 10 with respect to the attachment part 20 is maintained.

  Thereafter, as shown in FIG. 5 (b), the bracket 10 is inserted to a position where the right side surface 13 c of the notch portion 13 of the bracket 10 contacts the left side surface 21 b of the leg portion 21 of the mounting portion 20. Complete the assembly of 10.

  According to the reservoir tank 1 of the present embodiment described above, the hook piece 22 elastically biases the bracket 10 when the mounting portion 20 is locked to the bracket 10. The backlash of the mounting part 20 with respect to the backlash and the bracket 10 can be suppressed suitably. Therefore, the assembling property can be improved.

  Further, the distance L2 between the inner surface (top portion 22a) of the hook piece 22 and the lower surface 31a of the mounting space 31b is smaller than the plate thickness L3 of the bracket 10, and the proximal inner surface 22c1 of the hook piece 22 is mounted. Since the distance L1 from the lower surface 31a of the space 31b is equal to or greater than the plate thickness L3 of the bracket 10, the bracket 10 inserted into the mounting portion 20 is suitably held by the urging force of the hook piece 22. . Therefore, it is possible to effectively suppress the disconnection of the attachment portion 20 with respect to the bracket 10 by the urging of the hook piece 22. Therefore, the assembling property can be further improved.

  Further, in the mounting portion 20, the separation distance between the inner surface of the hook piece 22 and the lower surface 31a of the mounting space 31b is gradually increased from the distal end side (top portion 22a) to the proximal end side (corner portion 22d) side. Since the right inclined surface 22c (inclined portion) set to be large is provided, the tip end side of the hook piece 22 elastically biases the bracket 10. Therefore, it is possible to effectively suppress the removal of the mounting portion 20 with respect to the bracket 10 by the biasing of the hook piece 22 on the front end side. Therefore, the assembling property can be further improved.

  Further, since the chamfered portion (left inclined surface 22b) is formed on the inner surface of the tip of the hook piece, the bracket 10 can be smoothly inserted into the mounting portion 20 via the chamfered portion during assembly. Therefore, the assembling property can be further improved.

(Second Embodiment)
A reservoir tank of the second embodiment will be described with reference to FIGS. In the present embodiment, the hook piece 22 includes a protrusion 221 that can be engaged with a recess 15 (hole) formed in the bracket 10. The hole 15 may be a hole that does not penetrate.

  As shown in FIGS. 6A and 6B, the hole 15 is formed to the left of the notch 13 of the bracket 10 and has a substantially rectangular shape. The hole portion 15 corresponds to the top portion 22a (protruding portion 221) of the hook piece 22 of the mounting portion 20, and as shown in FIG. 7C, the hole 15 is inserted into the mounting portion 20 with the bracket 10 inserted therein. The top portion 22 a (projecting portion 221) enters the portion 15, and the hook piece 22 is engaged with the hole portion 15.

With the hook piece 22 engaged with the hole 15, the left inclined surface 22 b abuts on the left edge 15 a of the hole 15, and the right inclined surface 22 c contacts the right edge 15 b of the hole 15. Touch. That is, both the inclined surfaces 22b and 22c of the hook piece 22 are in contact with the left edge 15a and the right edge 15b of the hole 15, respectively. In addition, you may be comprised so that one inclined surface may contact | abut among the left inclined surface 22b and the right inclined surface 22c.
Although not shown, the hook piece 22 of the mounting portion 20 has the same separation distances L1 and L2 as in the first embodiment.

  In such a reservoir tank 1, as shown in FIG. 7A, when the reservoir tank 1 is attached to the bracket 10, as in the first embodiment, the notch 13 (FIG. ), The same applies hereinafter) is positioned on the left side of the mounting portion 20, and the bracket 10 is moved to the right mounting portion 20 along the lower surface 31a.

  Then, since the plate thickness L3 of the bracket 10 is larger than the separation distance L2 of the top portion 22a of the hook piece 22, the lower edge portion 13a of the notch portion 13 comes into contact with the left inclined surface 22b of the hook piece 22. When the bracket 10 is further inserted from this state, the lower edge portion 13a of the notch portion 13 moves on the left inclined surface 22b toward the top portion 22a, and the pressing force accompanying the movement acts on the hook piece 22. As a result, the hook piece 22 is elastically deformed and moved downward, and the bracket 10 is pressed against the mounting space 31b by its restoring force (biasing force).

Thereafter, when the bracket 10 is further inserted and the lower edge portion 13a of the notch portion 13 reaches the top portion 22a of the hook piece 22, the pressing force acting on the hook piece 22 is maximized, and the hook piece 22 is further elastically downward. Deform and move. As a result, the restoring force (urging force) for pressing the bracket 10 against the mounting space 31b is maximized.
Thereafter, when the bracket 10 is further inserted and the lower edge 13a of the notch 13 exceeds the top 22a of the hook piece 22 as shown in FIG. 7B, the bracket 10 continuing to the lower edge 13a. The top portion 22a comes into contact with the lower surface 13b, and the pressing force due to the contact acts on the hook piece 22 through the top portion 22a. Accordingly, the state in which the hook piece 22 is elastically deformed (moved) downward is continuously maintained.

Thereafter, when the bracket 10 is further inserted and the right edge 15b of the hole 15 exceeds the top 22a of the hook piece 22, the restoring force (biasing force) of the hook piece 22 tilts to the right edge 15b of the hole 15 to the right. The slope 22 c comes into contact with the top 22 a and enters the hole 15.
Thereafter, as shown in FIG. 7C, when the bracket 10 is inserted to a position where the right side surface 13c of the notch 13 of the bracket 10 contacts the left side surface 21b of the leg portion 21 of the mounting portion 20, the hole portion 15 is inserted. The left inclined surface 22b comes into contact with the left edge portion 15a, and the right inclined surface 22c comes into contact with the right edge portion 15b of the hole 15 to complete the assembly of the bracket 10 to the mounting portion 20.

  According to the reservoir tank 1 of the present embodiment described above, the hook piece 22 is configured to be engageable with the hole 15 formed in the bracket 10, so that the attachment portion 20 is prevented from coming off from the bracket 10. be able to.

Further, the hook piece 22 has a left inclined surface 22b and a right inclined surface 22c and protrudes, and since these inclined surfaces 22b and 22c are in contact with the hole portion 15 and are urged by the bracket 10, the inclined surface The hook piece 22 is effectively urged to the hole portion 15 of the bracket 10 through 22b and 22c, and the removal of the attachment portion 20 with respect to the bracket 10 can be more effectively suppressed. Therefore, the assembling property can be further improved.
Even in the configuration in which one side of the inclined surfaces 22b and 22c is in contact, it is possible to effectively prevent the attachment portion 20 from coming off the bracket 10.

  In each of the above embodiments, the upper surface of the hook piece 22 is formed in a mountain shape and urged against the bracket 10. However, the present invention is not limited to this, and has an upper surface that is urged and pressed against the bracket 10. If it does, the hook piece 22 of various shapes can be employ | adopted. For example, the top surface of the tip of the hook piece 22 may have a shape that bulges upward in a curved shape.

  Moreover, you may make the width | variety of the left-right direction of the leg part 21 of the attaching part 20, and the thickness of the up-down direction of the hook piece 22 narrower or wider than the thing of each said embodiment. By doing in this way, the urging | biasing force with respect to the bracket 10 can be adjusted suitably.

1 Reservoir Tank 3 Reservoir Body 10 Bracket 15 Hole (Recess)
20 mounting portion 20A narrow portion 20B wide portion 22 hook piece 22b left inclined portion (chamfered portion)
31b Mounting space L1 Separation distance (distance between the inner surface on the base end side of the hook piece and the opposing surface of the mounting space)
L2 separation distance (distance between the tip side inner surface of the hook piece and the facing surface of the mounting space)
L3 thickness

Claims (6)

A reservoir tank attached to the vehicle body via a plate-shaped bracket,
A reservoir body in which brake fluid is stored;
A hook-shaped mounting portion that is locked to the bracket,
The reservoir body is provided with a mounting space for mounting the bracket,
The reservoir tank according to claim 1, wherein the attachment portion includes a hook piece that is provided in the mounting space and elastically urges the bracket in a plate thickness direction of the bracket. The mounting portion is
A narrow portion in which the distance between the inner surface on the front end side of the hook piece and the facing surface of the mounting space is smaller than the plate thickness of the bracket;
2. The reservoir according to claim 1, further comprising: a wide portion in which a distance between an inner surface on the proximal end side of the hook piece and a facing surface of the mounting space is larger than a thickness of the bracket. tank. The mounting portion is
3. An inclined portion that is set so that a distance between an inner surface of the hook piece and a facing surface of the mounting space gradually increases from a distal end side to a proximal end side of the hook piece. Reservoir tank as described in.   The reservoir tank according to any one of claims 1 to 3, wherein a chamfered portion is formed on an inner surface of a tip of the hook piece.   5. The reservoir tank according to claim 1, wherein the hook piece includes a protrusion that can be engaged with a recess formed in the plate thickness direction of the bracket. The reservoir tank according to claim 5, wherein the protruding portion has an inclined surface and protrudes, and the inclined surface and the concave portion are in contact with each other and are urged by the bracket.

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