JP7115160B2 - Fixing member - Google Patents

Description

The present disclosure relates to fixation members.

Insert molding can be used to manufacture products that include inserts. A technique of insert molding is disclosed in Japanese Patent Application Laid-Open No. 2002-200012. A fixing member is sometimes used in insert molding. A fixed member is installed in the insert mold. The fixing member fixes the insert. A plate-like part called a side cover, for example, is an insert part fixed to the fixing member. The side cover is part of the sensor head.

Japanese Utility Model Laid-Open No. 62-11816

As the fixing member, an O-ring type and a magnet type are conceivable. The O-ring type has a locating pin. An O-ring is attached to the positioning pin. The positioning pin is inserted into a positioning hole provided in the side cover. The O-ring abuts the inner surface of the positioning hole. The O-ring type fixes the side cover by the frictional force acting between the O-ring and the inner surface of the positioning hole.

The magnet type includes a magnet in a portion of the fixing member that faces the side cover. The magnet type fixes the side cover by the magnetic force acting between the magnet and the side cover.
Repeated use of the O-ring type wears out the O-ring. When the O-ring wears out, the function of fixing the side cover deteriorates, and the side cover falls off from the fixing member.

In the case of the magnet type, problems caused by the magnet may occur. As a problem caused by magnets, for example, powder generated by cracking of magnets may adhere to products and molds. Further, as a problem caused by the magnet, for example, magnetization of the side cover may deteriorate the performance of the sensor. Another problem caused by the magnet is that the side cover cannot be fixed unless the material of the side cover is iron.

An object of one aspect of the present disclosure is to provide a fixing member that is less likely to lose its function of fixing an insert product even after repeated use, and that is unlikely to cause problems caused by magnets.

One aspect of the present disclosure is a fixing member that is installed in an insert molding die and fixes an insert, the main unit having a contact surface that contacts the insert, and a fixing member that is movably attached to the main unit. and a plurality of fixing units each having a first position for fixing the insert in contact with the abutment surface and a first position for fixing the insert in abutment with the abutment surface. A fixed member movable between a second spaced position.

A fixing member according to one aspect of the present disclosure fixes an insert by means of a plurality of fixing units. Therefore, even if it is used repeatedly, the function of fixing the insert is unlikely to deteriorate.
A fixing member that is one aspect of the present disclosure does not necessarily have to use a magnet. As a result, problems caused by magnets can be suppressed.

A securing member according to one aspect of the present disclosure can secure an insert by moving a plurality of securing units to a first position. Further, the fixing member, which is one aspect of the present disclosure, can be unlocked by moving the plurality of fixing units to the second position. Therefore, with the fixing member according to one aspect of the present disclosure, it is easy to fix and release the insert.

Fig. 2 is a plan view showing the configuration of the fixing member 1 with fixing units 5 and 7 at the first position; FIG. 10 is a plan view showing the configuration of the fixing member 1 with the fixing units 5 and 7 at the second position; FIG. 3 is a side view showing the configuration of the fixing member 1; Fig. 2 is a front view showing the structure of the fixing member 1 with fixing units 5 and 7 at the first position; 4 is a plan view showing a state in which the side cover 43 is fixed to the fixing member 1; FIG. 4 is a front view showing a state in which the side cover 43 is fixed to the fixing member 1; FIG. FIG. 11 is an explanatory view showing a state in which the upper mold portion 61 is lifted with respect to the lower mold portion 59; FIG. 11 is an explanatory diagram showing a state in which the upper mold portion 61 is lowered with respect to the lower mold portion 59;

Exemplary embodiments of the present disclosure are described with reference to the drawings.
<First Embodiment>
1. Configuration of Fixing Member 1 The configuration of the fixing member 1 will be described with reference to FIGS. 1 to 4. FIG. The fixing member 1 is made of metal. As shown in FIGS. 1 and 2 , the fixing member 1 includes a main unit 3 , fixing units 5 and 7 , springs 9 and 11 , and positioning pins 13 and 15 .

As shown in FIGS. 1 to 4, the main unit 3 has a rectangular parallelepiped basic shape. The six surfaces forming the outer peripheral surface of the main unit 3 are a front surface 17 , a rear surface 19 , an upper surface 21 , a lower surface 23 , a first side surface 25 and a second side surface 27 . The front surface 17 corresponds to the abutment surface.

As shown in FIGS. 1, 2 and 4, grooves 29 are formed in the first side surface 25 . The groove 29 extends from the front face 17 to the back face 19 . A groove 31 is formed in the second side surface 27 . The groove 31 extends from the front face 17 to the back face 19 . As shown in FIGS. 1 and 2, the grooves 29 and 31 are deeper on the rear surface 19 side than on the front surface 17 side. As shown in FIGS. 1, 2 and 4, the front face 17 is formed with relief holes 33 . The escape hole 33 is a recessed portion compared to its surroundings.

As shown in FIGS. 1, 2 and 4, the fixing unit 5 has a prismatic basic shape. An end portion of the fixed unit 5 on the front face 17 side (hereinafter referred to as a tip portion 35) has an L-shaped bent shape.

A portion of the fixing unit 5 excluding the tip portion 35 is housed inside the groove 29 . The tip portion 35 protrudes from the main unit 3 toward the front surface 17 . As shown in FIGS. 1, 2, and 4, the fixed unit 5 is rotatably attached to the main unit 3 by a shaft 39. As shown in FIG. The fixed unit 5 is attached to the main unit 3 so that the internal angle of the L-shaped tip portion 35 faces the fixed unit 7 .
The shaft 39 passes through a portion of the main unit 3 that overlaps with the groove 29 in a plan view and is closer to the rear surface 19 . Further, the shaft 39 passes through the end portion of the fixing unit 5 opposite to the tip portion 35 (hereinafter referred to as the rear end portion 37). The axial direction of the shaft 39 is a direction perpendicular to the upper surface 21 and the lower surface 23 . The fixed unit 5 is rotatable about the shaft 39 in directions A and B shown in FIGS. 1 and 2 .

As shown in FIG. 1, the position of the fixed unit 5 rotated in the A direction is hereinafter referred to as the first position. As shown in FIG. 2, the position of the fixing unit 5 rotated in the B direction is hereinafter referred to as the second position. The fixed unit 5 is movable between a first position and a second position.

As shown in FIGS. 1-4, the fixing unit 7 has the same form as the fixing unit 5. FIG. A portion of the fixing unit 7 excluding the tip portion 35 is housed inside the groove 31 . The tip portion 35 protrudes from the main unit 3 toward the front surface 17 . As shown in FIGS. 1 to 4, the fixed unit 7 is rotatably attached to the main unit 3 by a shaft 41. As shown in FIG. The fixed unit 7 is attached to the main unit 3 so that the internal angle of the L-shaped tip portion 35 faces the fixed unit 5 .

The shaft 41 passes through a portion of the main unit 3 that overlaps with the groove 31 in a plan view and is closer to the rear surface 19 . Also, the shaft 41 passes through the rear end portion 37 of the fixed unit 7 . The axial direction of the shaft 41 is a direction perpendicular to the upper surface 21 and the lower surface 23 . The fixed unit 7 is rotatable about the shaft 41 in directions A and B shown in FIGS. 1 and 2 .

As shown in FIG. 1, the position of the fixed unit 7 rotated in the A direction is defined as the first position. As shown in FIG. 2, the position of the fixed unit 7 rotated in the B direction is defined as the second position. The fixed unit 7 is movable between a first position and a second position.

As shown in FIGS. 1 and 2, the spring 9 is formed in a portion of the bottom surface 29A of the groove 29 on the side of the rear surface 19 and a portion of the rear end portion 37 of the fixing unit 5 further on the rear surface side than the shaft 39. is installed between A spring 9 biases the fixing unit 5 toward the first position.

As shown in FIGS. 1 and 2, the spring 11 is formed in a portion of the bottom surface 31A of the groove 31 on the side of the back surface 19 and a portion of the rear end portion 37 of the fixing unit 7 on the back surface side of the shaft 41. is installed between A spring 11 biases the fixing unit 7 toward the first position. Springs 9, 11 correspond to biasing units.

As shown in FIGS. 1, 2 and 4, the positioning pins 13 and 15 are erected on the front surface 17. As shown in FIGS. The positioning pins 13 , 15 are arranged on both sides of the escape hole 33 . Axial directions of the positioning pins 13 and 15 are perpendicular to the front surface 17 .

2. How to Use the Fixing Member 1 How to use the fixing member 1 will be described with reference to FIGS. 5 to 8. FIG. First, with the fixing units 5 and 7 at the second position, the first surface 44 of the side cover 43 is brought into contact with the front surface 17 as shown in FIGS. The side cover 43 is a plate-like member. The first surface 44 is one of the principal surfaces of the side cover 43 .

The side cover 43 has a sensor head hole 47 into which the sensor head 45 is inserted. The sensor head hole 47 penetrates the side cover 43 in the thickness direction. The side cover 43 also has two positioning holes 49 and 51 . The positioning holes 49 and 51 pass through the side cover 43 in the thickness direction. Two positioning holes 49 and 51 are located on both sides of the sensor head hole 47 .

As shown in FIGS. 5 and 6, the positioning pin 13 is inserted into the positioning hole 49 when the first surface 44 of the side cover 43 is brought into contact with the front surface 17 . Also, the positioning pin 15 is inserted into the positioning hole 51 . Thereby, the position of the side cover 43 with respect to the main unit 3 is determined.

As shown in FIG. 5 , when the first surface 44 of the side cover 43 is brought into contact with the front surface 17 , the sensor head hole 47 overlaps the escape hole 33 when viewed from a direction orthogonal to the front surface 17 . Therefore, the tip of the sensor head 45 inserted into the sensor head hole 47 is less likely to come into contact with the front surface 17 .

Next, as shown in FIGS. 5 and 6, the fixing units 5 and 7 are set to the first position. The tip portion 35 of the fixing unit 5 abuts on the first corner portion 53 of the side cover 43 to fix the side cover 43 . The first corner portion 53 is a corner formed by a second surface 54 and a first side surface 56 . The second surface 54 is a surface of the outer peripheral surface of the side cover 43 opposite to the first surface 44 . The first side surface 56 is the side surface of the side cover 43 that faces the fixed unit 5 . Since the tip portion 35 of the fixing unit 5 has an L-shape, it can come into contact with both the second surface 54 forming the first corner portion 53 and the first side surface 56 .

The tip portion 35 of the fixing unit 7 abuts on the second corner portion 55 of the side cover 43 to fix the side cover 43 . The second corner portion 55 is a corner formed by the second face 54 and the second side face 58 . A second side surface 58 is a side surface of the side cover 43 that faces the fixing unit 7 . The second corner portion 55 is an end portion of the side cover 43 opposite to the first corner portion 53 . Since the tip portion 35 of the fixing unit 7 has an L-shape, it can abut against both the second surface 54 and the second side surface 58 forming the second corner portion 55 .

Next, as shown in FIGS. 5 and 6, the sensor head 45 is inserted into the sensor head hole 47 . A cable 57 is connected to the sensor head 45 .
As shown in FIGS. 7 and 8 , the fixed member 1 is installed in an insert mold 63 consisting of a lower mold portion 59 and an upper mold portion 61 . The fixed member 1 is slidably attached to the lower mold portion 59 . The direction of sliding is the horizontal direction in FIGS. The fixed member 1 slides integrally with an angular guide 65, which will be described later.

The lower mold part 59 has an angular guide 65 . The angular guide 65 is provided with a hole 69 that opens in its upper surface 67 and extends obliquely downward. The upper mold portion 61 includes an angular 71 extending obliquely downward. The axial direction of the angular 71 is parallel to the axial direction of the hole 69 .

As shown in FIG. 7 , the side cover 43 and the sensor head 45 are fixed to the fixing member 1 while the upper mold portion 61 is raised with respect to the lower mold portion 59 .
As shown in FIG. 8, the angular 71 is inserted into the hole 69 as the upper mold portion 61 descends. At that time, the angular guide 65 and the fixed member 1 slide horizontally. Insert molding is performed in a state where the upper mold part 61 is lowered and the insert mold 63 is closed. As a result of insert molding, a product in which the side cover 43 and the sensor head 45 are covered with resin and integrated is completed.

3. Effects of Fixing Member 1 (1A) Fixing member 1 fixes side cover 43 by fixing units 5 and 7 . Therefore, even after repeated use, the function of fixing the side cover 43 is unlikely to deteriorate.

(1B) The fixing member 1 fixes the side cover 43 with the fixing units 5 and 7 . Therefore, it is not always necessary to use a magnet. As a result, problems caused by magnets can be suppressed.

In other words, the fixing member 1 can suppress adhesion of powder generated by cracking of the magnet to the product and the insert mold 63 . Moreover, the fixing member 1 can suppress magnetization of the side cover 43 . Further, the fixing member 1 can fix the side cover 43 even if the material of the side cover 43 is not iron-based.

(1C) The fixing member 1 can fix the side cover 43 by moving the fixing units 5 and 7 to the first position. Further, the fixing member 1 can be released from fixing by moving the fixing units 5 and 7 to the second position. Therefore, it is easy to fix and release the side cover 43 .

(1D) The fixed units 5 and 7 are rotatably attached to the main unit 3, respectively. Therefore, it is easier to fix and release the side cover 43 .
(1E) The fixing units 5 and 7 each have a substantially L-shaped distal end portion 35 . When the fixing unit 5 is at the first position, the distal end portion 35 of the fixing unit 5 contacts the first corner portion 53 . Further, when the fixing unit 7 is at the first position, the tip portion 35 of the fixing unit 7 contacts the second corner portion 55 . Therefore, the fixing member 1 can fix the side cover 43 more reliably.

( 1 F) The fixed member 1 has springs 9 and 11 . A spring 9 biases the fixing unit 5 toward the first position. A spring 11 biases the fixing unit 7 toward the first position. Therefore, it is possible to prevent the fixing units 5 and 7 from moving toward the second position against the user's intention. As a result, the fixing member 1 can fix the side cover 43 more reliably.

(1G) The fixed member 1 has positioning pins 13 and 15 . The positioning pins 13 and 15 are inserted into the positioning holes 49 and 51 when fixing the side cover 43 to the fixing member 1 . Therefore, the position of the side cover 43 with respect to the fixed member 1 becomes more accurate.

(1H) The fixing units 5 and 7 fix the first corner 53 and the second corner 55 . The first corner 53 is one end of the side cover 43 . The second corner 55 is an end of the side cover 43 opposite to the one. Therefore, the fixing member 1 can fix the side cover 43 more reliably.
<Other embodiments>
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and various modifications can be made.

(1) The insert article fixed by the fixing member 1 may be something other than the side cover 43 .
(2) The number of fixing units included in the fixing member 1 may be two or more.
(3) The manner in which the fixed units 5 and 7 move may be a manner other than rotation. For example, the fixed units 5, 7 may be moved by sliding between the first position and the second position.

(4) The tip portion 35 may have a shape other than the L shape.
(5) The fixing member 1 may not have the positioning pins 13 and 15 .
(6) The fixing units 5 and 7 may fix the upper end and the lower end of the side cover 43 .

(7) A function of one component in each of the above embodiments may be assigned to a plurality of components, or a function of a plurality of components may be performed by one component. Also, part of the configuration of each of the above embodiments may be omitted. Also, at least part of the configuration of each of the above embodiments may be added, replaced, etc. with respect to the configuration of the other above embodiments. It should be noted that all aspects included in the technical idea specified by the wording in the claims are embodiments of the present disclosure.

(8) In addition to the fixing member described above, the present disclosure can also be realized in various forms such as a system having the fixing member as a component, an insert article fixing method, an insert molding manufacturing method, and the like.

REFERENCE SIGNS LIST 1: fixing member 3: main unit 5, 7: fixing unit 9, 11: spring 13, 15: positioning pin 17: front surface 19: rear surface 21: upper surface 23: lower surface 25: first Side 27 Second side 29, 31 Groove 29A, 31A Bottom 33 Escape hole 35 Tip 37 Rear end 39, 41 Shaft 43 Side cover 44 Third 1 surface 45... sensor head 47... hole for sensor head 49, 51... positioning hole 53... first corner 54... second surface 55... second corner 56... first side surface 57... Cable 58 Second side 59 Lower mold part 61 Upper mold part 63 Insert mold 65 Angular guide 67 Upper surface 69 Hole 71 Angular

Claims (6)

A fixing member that is installed in the insert molding mold and fixes the insert product,
a body unit having a contact surface that contacts the insert;
a plurality of fixed units movably attached to the main body unit;
with
Each of the plurality of fixing units moves between a first position to fix the insert in contact with the contact surface and a second position away from the insert in contact with the contact surface. is possible and
A fixing member in which a relief hole, which is a recessed portion compared to the surroundings, is formed in the contact surface . The fixing member according to claim 1,
The insert includes a hole penetrating the insert,
A fixing member in which, when the insert part abuts against the abutting surface, a hole penetrating the insert part overlaps with the escape hole when viewed from a direction orthogonal to the abutting surface . The fixing member according to claim 1 or 2,
each of the plurality of fixing units has a substantially L-shaped tip,
A fixing member, the tip of which abuts on the corner of the insert when the fixing unit is at the first position. The fixing member according to any one of claims 1 to 3,
The fixing member further comprising a biasing unit that biases the fixing unit toward the first position. The fixing member according to any one of claims 1 to 4,
A fixing member further comprising a positioning pin erected on the contact surface and inserted into a hole provided in the insert. The fixing member according to any one of claims 1 to 5,
The plurality of fixing units are fixing members that fix one end of the insert that contacts the contact surface and an end opposite to the one.

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