JP2020198221A - Spring holder - Google Patents

Abstract

To provide a spring holder which allows easy assembly work.SOLUTION: A spring holder 10 comprises: a canted coil spring 24; a first holder 20 which supports the canted coil spring 24; and a second holder 22 which is coupled to the first holder 20. The first holder 20 has: a first support part which supports one end side of the canted coil spring 24; and a first pillar part which extends along an axial direction of the canted coil spring. The second holder 22 has: a second support part which is opposed to the first support part in the axial direction and supports the other end side of the canted coil spring 24; and a second pillar part which extends coaxially with the axial direction of the canted coil spring 24. In a first state where one end side of the canted coil spring 24 is supported by the first support part but the other side is not supported by the second support part, the first pillar part and the second pillar part are engaged with each other in a manner slidable in the axial direction. By a sliding motion in which the first support part and the second support part come closer to each other, the second support part is brought into a state where it supports the other end side of the canted coil spring.SELECTED DRAWING: Figure 1

Description

The present invention relates to a spring holder that holds an inclined coil spring.

Patent Document 1 discloses a high-current insertion connection connector using a plurality of coil springs as contact members. This high-current insertion connection connector includes a housing having an opening side into which a mating insertion connection connector can be inserted, a plurality of coil springs that establish electrical contacts between the housing and the mating insertion connection connector, and a plurality of coil springs. It is provided with a mounting member which is arranged in the housing while holding the above. The mounting member includes a first mounting portion and a second mounting portion having spigots inserted at both ends of the coil spring, respectively. One end of the coil spring is supported by the spigot of the first mounting portion, and the spigot of the second mounting member is inserted into the other end of the coil spring, and the first mounting portion and the second mounting portion are fitted to each other to fit the mounting member. Is assembled.

Special Table 2013-535777

In the technique of Patent Document 1, when the operator holds the coil spring in the first mounting portion and then inserts the spigot of the second mounting portion into the coil spring, it is not easy to align the coil spring and the spigot. is there.

An object of the present invention is to provide a spring holder that is easy to assemble.

In order to solve the above problems, a spring holder according to an embodiment of the present invention includes a tilted coil spring, a first holder that supports the tilted coil spring, and a second holder that is connected to the first holder. The first holder has a first support portion that supports one end side of the tilt coil spring, and a first pillar portion that extends along the axial direction of the tilt coil spring. The second holder includes a second support portion that faces the first support portion in the axial direction and supports the other end side of the inclined coil spring, and a second pillar portion that extends along the axial direction of the inclined coil spring. Has. In the first state in which one end side of the inclined coil spring is supported by the first support portion and the other end side is not supported by the second support portion, the first pillar portion and the second pillar portion can slide in the axial direction. Engage. The second support portion is in a state in which the other end side of the inclined coil spring is supported by a slide in which the first support portion and the second support portion approach each other.

According to the present invention, it is possible to provide a spring holder that is easy to assemble.

It is a perspective view of the spring holder of an Example. FIG. 2A is a perspective view of the spring holder that has been assembled, and FIG. 2B is a perspective view of the spring holder that is being assembled. It is an exploded view of a spring holder. FIG. 4A is a front view of the first holder, and FIG. 4B is a side view of the first holder. FIG. 5A is a front view of the second holder, and FIG. 5B is a side view of the second holder.

FIG. 1 is a perspective view of the spring holder 10 of the embodiment. In FIG. 1, in addition to the spring holder 10, the first bus bar 12a and the second bus bar 12b connected to the spring holder 10 are shown. The spring holder 10 functions as a connector for electrically connecting the first bus bar 12a and the second bus bar 12b. The first bus bar 12a and the second bus bar 12b are formed in a plate shape and are connected with the spring holder 10 sandwiched between them.

The spring holder 10 has a first holder 20, a second holder 22, and a plurality of inclined coil springs 24. The first holder 20 and the second holder 22 are made of a resin material and support a plurality of inclined coil springs 24 in a connected state. The inclined coil spring 24 is made of a metal material and comes into contact with the first bus bar 12a and the second bus bar 12b to energize the spring 24.

The inclined coil spring 24 has an elliptical coil diameter when viewed in the axial direction. As a result, the inclined coil spring 24 can easily generate a reaction force in the radial direction, and can be elastically contacted with the first bus bar 12a and the second bus bar 12b which are in contact with each other in the radial direction. By connecting the first bus bar 12a and the second bus bar 12b with a plurality of inclined coil springs 24, it can be used for high voltage devices such as inverters and batteries of electric vehicles and hybrid vehicles. The inclined coil spring 24 has a small amount of change in reaction force even if the amount of pushing in the radial direction changes, and can stably contact the first bus bar 12a and the second bus bar 12b.

FIG. 2A is a perspective view of the spring holder 10 that has been assembled, and FIG. 2B is a perspective view of the spring holder 10 that is being assembled. Further, FIG. 3 is an exploded view of the spring holder 10.

The first holder 20 has a first support portion 26, a first pillar portion 28, a first suspension portion 30, a first hole portion 32a, a second hole portion 32b, a convex portion 34, and a step portion 36. The second holder 22 has a second support portion 40, a second suspension portion 42, a second pillar portion 44, a protrusion portion 46, a recess 48, and a step portion 54. When the first hole portion 32a and the second hole portion 32b are not distinguished, it is referred to as the hole portion 32. The first holder 20 and the second holder 22 will be described with reference to new drawings.

FIG. 4A is a front view of the first holder 20, and FIG. 4B is a side view of the first holder 20. The first pillar portions 28 extend in the axial direction and are provided in pairs facing each other. The axial direction is along the central axis of the inclined coil spring 24 in the assembled state.

The first suspension portion 30 is formed in a columnar shape, is suspended over a pair of first pillar portions 28, and connects the pair of first pillar portions 28. The pair of first pillar portions 28 extend from both ends of the first suspension portion 30. A plurality of first support portions 26 are formed on the first suspension portion 30 and project in the axial direction. The first support portion 26 is inserted into one end 24a of the inclined coil spring 24 and supports the one end 24a side of the inclined coil spring 24. The first support portion 26 is a flat plate-shaped protrusion, which limits the movement of rotation around the central axis of the inclined coil spring 24. The plurality of first support portions 26 are located at equal intervals.

The hole portion 32 is formed in the first pillar portion 28 and penetrates in the opposite direction of the pair of first pillar portions 28. As shown in FIG. 2B, the hole portion 32 is axially displaced from the first hole portion 32a that engages with the protrusion 46 in the state before the inclined coil spring 24 is assembled and the first hole portion 32a. It has a second hole portion 32b which is continuously provided. Between the first hole portion 32a and the second hole portion 32b, a limiting portion 50 is formed which projects into the hole portion 32 and restricts the protrusion 46 from moving from the second hole portion 32b to the first hole portion 32a. Will be done.

The first hole portion 32a is larger than the second hole portion 32b and the protrusion portion 46 and loosely fits the protrusion portion 46, but the second hole portion 32b is the same size as the protrusion portion 46 and is the first hole portion. It fits with the protrusion 46 in a state where the gap with the protrusion 46 is smaller than that of 32a. The first hole portion 32a and the second hole portion 32b are formed in an elongated hole shape in the axial direction, respectively.

The convex portion 34 is formed so as to project axially from the tip of the first pillar portion 28, and is formed narrower than the first pillar portion 28. The convex portion 34 has a tapered root portion 34a so that the convex portion 34 becomes thinner toward the tip end.

The step portion 36 is formed so as to recess the front surface and the back surface of the first suspension portion 30. The bus bar 12 can be accommodated in the recess formed by the step portion 36, the bus bar 12 can be easily contacted with the inclined coil spring 24, and the movement of the bus bar 12 can be restricted.

FIG. 5A is a front view of the second holder 22, and FIG. 5B is a side view of the second holder 22. The second pillar portions 44 extend in the axial direction and are provided in pairs facing each other. The second suspension portion 42 is formed in a columnar shape, is suspended over a pair of second pillar portions 44, and connects the pair of second pillar portions 44. A plurality of second support portions 40 are formed on the second suspension portion 42 and project in the axial direction. The second support portion 40 is formed in a rod shape, facilitating insertion of the inclined coil spring 24 into the other end 24b. The second support portion 40 is inserted into the tilt coil spring 24 to support the other end 24b side of the tilt coil spring 24.

The protrusion 46 is formed on the side surface of the second pillar portion 44, and projects outward in the opposite direction of the pair of second pillar portions 44. The protrusion 46 is formed longitudinally in the axial direction. By forming the first hole portion 32a in a long hole shape and forming the protrusion 46 in a longitudinal shape, rotation in the first hole portion 32a is suppressed.

The concave portion 48 is formed on the base end side of the second pillar portion 44 and can be engaged with the convex portion 34 of the first holder 20. When the convex portion 34 is inserted into the concave portion 48, the tapered surface 48a inclined on the insertion port side of the concave portion 48 engages with the root portion 34a of the convex portion 34.

The inclined surface 52 is formed so as to be inclined to the outer side surface of the second pillar portion 44, and is located on the base end side of the second pillar portion 44. When the assembly is completed, the tip of the first pillar portion 28 comes into contact with the inclined surface 52, and the first pillar portion 28 can be prevented from rattling with respect to the second pillar portion 44.

Return to FIGS. 2 and 3. The first holder 20 and the second holder 22 are taken out from the mold in a state where the protrusion 46 is engaged with the first hole portion 32a, and are integrally molded in a connected state. As a result, the manufacturing cost can be suppressed. As shown in FIG. 2B, a gap for inserting a mold is formed between the first hole portion 32a and the protrusion 46, and between the first pillar portion 28 and the second pillar portion 44.

As shown in FIG. 2A, the second support portion 40 faces the first support portion 26 in the axial direction, and the plurality of second support portions 40 are positioned coaxially with the plurality of first support portions 26, respectively. To do. The first pillar portion 28 and the second pillar portion 44 extend along the axial direction of the inclined coil spring 24. The first pillar portion 28 and the second pillar portion 44 are slidably engaged in the axial direction in the first state before assembling the inclined coil spring 24 shown in FIG. 2B, and the protrusion 46 is the first. It can be moved from the hole portion 32a to the second hole portion 32b.

The assembly process of the spring holder 10 will be described. The first holder 20 and the second holder 22 are in a state in which the protrusion 46 is engaged with the first hole portion 32a and is integrally connected. The operator attaches the inclined coil spring 24 to the first support portion 26 to bring it into the first state before the slide shown in FIG. 2 (b). In the first state shown in FIG. 2B, the distance between the first support portion 26 and the second support portion 40 is larger than that in the assembled completed state shown in FIG. 2A, so that the inclined coil spring 24 can be easily attached. Is. As shown in FIG. 2B, the naturally long inclined coil spring 24 is axially separated from the second support portion 40 in the state before the slide.

The operator brings the first suspension portion 30 and the second suspension portion 42, that is, the first support portion 26 and the second support portion 40 in the axial direction from the first state shown in FIG. 2 (b), and pushes the protrusion 46. Slide from the first hole 32a to the second hole 32b. As a result, the second support portion 40 is inserted into the other end 24b of the inclined coil spring 24, and a second state is established in which the other end 24b side of the inclined coil spring 24 is supported.

Since the first support portion 26 and the second support portion 40 are coaxially located in the first state, the plurality of second support portions 40 and the plurality of inclined coil springs 24 can be positioned, and the operator can perform the positioning. If it is slid, positioning is not required, and the plurality of second support portions 40 can be easily inserted into the plurality of inclined coil springs 24.

In the second state of the protrusion 46 engaged with the second hole 32b, the slide toward the first hole 32a side is restricted by the limiting portion 50. The convex portion 34 is inserted into and engaged with the concave portion 48 in the second state in which the protruding portion 46 is engaged with the second hole portion 32b. The concave portion 48 and the convex portion 34 are positioned axially offset from the hole portion 32 and the protruding portion 46. As a result, the first holder 20 and the second holder 22 are engaged at two positions deviated in the axial direction, and rattling of the first holder 20 and the second holder 22 can be suppressed.

The first pillar portion 28 and the second pillar portion 44 have a gap in the opposite direction in which the mold has entered when the first holder 20 and the second holder 22 are integrally molded. By forming the inclined surface 52 on the base end side of the second pillar 44, the tip end side of the first pillar 28 comes into contact with the inclined surface 52 in the second state when the assembly is completed, and the first pillar 28 and the second pillar It is possible to prevent the portion 44 from rattling in the opposite direction.

Further, a gap into which the mold has entered is also formed between the first hole portion 32a and the protrusion portion 46, but the first hole portion 32a is formed in a long hole shape and the protrusion portion 46 is formed in a longitudinal shape. By doing so, it is possible to regulate that the protrusion 46 rotates in the first hole 32a, that is, the second holder 22 rotates about the straight line connecting the pair of protrusions 46 with respect to the first holder 20 as a rotation axis. .. As a result, by restricting the rotation of the second holder 22 with respect to the first holder 20, the slide during assembly can be stabilized, and the second support portion 40 can be easily inserted into the inclined coil spring 24. Can be made to.

The present invention is not limited to the above-described embodiment, and various modifications such as design changes can be added to the embodiment based on the knowledge of those skilled in the art, and such modifications have been added. Embodiments may also be included in the scope of the present invention.

In the embodiment, the first holder 20 and the second holder 22 are integrally molded, but the present invention is not limited to this mode, and the first holder 20 and the second holder 22 may be individually molded and then connected.

Further, in the embodiment, a mode is shown in which the hole 32 is formed in the first pillar 28 and the protrusion 46 is formed in the second pillar 44, but the present invention is not limited to this mode, and the first pillar 28 is not limited to this mode. The protrusion 46 may be formed, and the hole 32 may be formed in the second pillar 44. Further, the concave-convex relationship between the convex portion 34 and the concave portion 48 may be reversed, and the concave portion 48 may be formed in the first pillar portion 28 and the convex portion 34 may be formed in the second pillar portion 44.

10 Spring holder, 12a 1st bus bar, 12b 2nd bus bar, 20 1st holder, 22 2nd holder, 24 Inclined coil spring, 26 1st support part, 28 1st pillar part, 30 1st suspension part, 32a 1st Hole, 32b 2nd hole, 34 convex, 34a root, 36 step, 40 2nd support, 42 2nd suspension, 44 2nd pillar, 46 protrusion, 48 concave, 48a tapered surface, 50 Restriction part, 52 Inclined surface, 54 Step part.

Claims (4)

Inclined coil springs and
The first holder that supports the inclined coil spring and
A second holder connected to the first holder is provided.
The first holder is
A first support portion that supports one end side of the inclined coil spring and
It has a first pillar portion extending along the axial direction of the inclined coil spring, and has.
The second holder is
A second support portion that faces the first support portion in the axial direction and supports the other end side of the inclined coil spring.
It has a second pillar portion extending along the axial direction of the inclined coil spring, and has.
In the first state in which one end side of the inclined coil spring is supported by the first support portion and the other end side is not supported by the second support portion, the first pillar portion and the second pillar portion are shafts. Sliding in the direction, engaging,
A spring holder characterized in that the second support portion is in a second state in which the other end side of the inclined coil spring is supported by a slide in which the first support portion and the second support portion approach each other. The first pillar portion has either a hole portion or a protrusion portion that fits with each other.
The second pillar portion has either the hole portion or the protrusion portion, whichever is the other.
The hole is
The first hole that engages with the protrusion in the first state,
The spring holder according to claim 1, further comprising a second hole portion that is connected to the first hole portion so as to be displaced in the axial direction and that engages with the protrusion in the second state. The protrusion is restricted from sliding toward the first hole side in a state of being engaged with the second hole.
The first pillar portion has either a concave portion or a convex portion that engages with each other in a state where the protruding portion is engaged with the second hole portion.
The second pillar portion has either the recessed portion or the convex portion, whichever is the other.
The spring holder according to claim 2, wherein the concave portion and the convex portion are positioned axially offset from the hole portion and the protrusion portion. The protrusion is formed longitudinally in the axial direction.
The spring holder according to claim 2 or 3, wherein the first hole portion is formed in an elongated hole shape in the axial direction.

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