Hook device

Abstract

A hook device 10 comprises: a base part 12 having a pair of shaft hole parts; a shaft part inserted into the pair of shaft hole parts; a hook part 14 fixed to the shaft part and provided so as to be rotatable with respect to the base part 12 together with the shaft part; and a biasing part that abuts on the shaft part between the pair of shaft hole parts and biases the shaft part in a direction intersecting an axial direction of the shaft part.

Description

Hook device

[0001] The present invention relates to a hook device including a hook portion rotatably provided relative to a base portion.

[0002] Patent Document 1 discloses a hook device including: a base frame attached to a mounting surface via a bolt; a hook body pivotally supported by a bearing portion of the base frame; a leaf spring that elastically contacts the outer surface of each bearing portion of the hook body; a cover body pivotally supported by the bearing portion of the base frame, entering into a recess of the base portion to conceal a bolt head; and a metal bracket mounted on the outer side of the bottom surface of the base frame. The leaf spring has an assembly portion inserted into a notch of the base frame, and a pair of wings extending outward from the assembly portion. The pair of wings elastically contact the cam surface of the hook body.

[0003] Japanese Unexamined Patent Application Publication No. 2006-46548

[0004] In the technology disclosed in Patent Document 1, since the leaf spring needs to extend a pair of wings to the cam surface of the hook body to bias the hook body, it is difficult to transmit biasing force to the hook body.

[0005] An object of the present invention is to provide a hook device having a structure that facilitates transmission of biasing force to a hook portion.

[0006] In order to solve the above problem, a hook device according to an aspect of the present invention includes: a base portion having a pair of shaft hole portions; a shaft portion inserted into the pair of shaft hole portions; a hook portion fixed to the shaft portion and rotatably provided together with the shaft portion relative to the base portion; and a biasing portion that abuts the shaft portion between the pair of shaft hole portions and biases the shaft portion in a direction intersecting the axial direction of the shaft portion.

[0007] According to the present invention, a hook device having a structure that facilitates transmission of biasing force to a hook portion can be provided.

[0008] Fig. 1 is a perspective view of the hook device according to the first embodiment. Fig. 2 is a cross-sectional view of the hook device shown in Fig. 1 along line A-A. Fig. 3 is a perspective view of the hook device according to the second embodiment viewed from the front side. Fig. 4 is a perspective view of the hook device according to the second embodiment viewed from the back side. Fig. 5 is an exploded view of the hook device according to the second embodiment. Fig. 6 is a back view of the base portion. Fig. 7 is a partially enlarged view of the hook portion. Fig. 8 is a back view of the hook device according to the second embodiment.

[0009] Figure 1 is a perspective view of the hook device 10 of the first embodiment. Figure 2 is a cross-sectional view of the hook device 10 shown in Figure 1 along line segment A-A. The hook device 10 is installed on mounting members such as vehicle body panels and interior panels. The hook device 10 is positioned on the floor or side wall of the cargo area.

[0010] The hook device 10 comprises a base portion 12, a hook portion 14, a bolt 16, a shaft portion 18, and a biasing portion 20. The base portion 12 is fixed to the mounting member by the bolt 16. The base portion 12 has a cover portion 12a, a side wall portion 12b, and an axial hole portion 12c.

[0011] The cover portion 12a covers the shaft portion 18 and the biasing portion 20, and forms a housing portion for housing the biasing portion 20. The pair of side wall portions 12b are located on both sides of the cover portion 12a. The pair of shaft holes 12c are formed in the pair of side wall portions 12b, respectively.

[0012] The shaft portion 18 is inserted into a pair of axial holes 12c and supported so as to be rotatable. The hook portion 14 is formed in a substantially U-shape, with insertion holes 14a formed at both ends. Both ends of the shaft portion 18 are inserted into the pair of insertion holes 14a.

[0013] The shaft portion 18 has a fixing portion 18a formed at one end and a crimping portion 18b formed at the other end. The fixing portion 18a is formed in a flange shape and is fixed to the hook portion 14. When the fixing portion 18a is fixed to the hook portion 14, the hook portion 14 and the shaft portion 18 rotate together.

[0014] The crimped portion 18b is formed in a hollow shape and expands in diameter during the crimping process, causing it to catch around the insertion hole 14a. Figure 2 shows the crimped portion 18b in its state before crimping.

[0015] The hook portion 14 is pivotally supported on the shaft portion 18 and is rotatably mounted relative to the base portion 12. The biasing portion 20 is positioned inside the cover portion 12a of the base portion 12. The biasing portion 20 is a leaf spring that biases the shaft portion 18. The biasing portion 20 contacts the shaft portion 18 between a pair of axial holes 12c and biases the shaft portion 18 in a direction intersecting the axial direction of the shaft portion 18. More preferably, the biasing portion 20 biases the shaft portion 18 in a direction perpendicular to the axial direction. The axial direction of the shaft portion 18 is sometimes simply referred to as the axial direction.

[0016] The biasing unit 20 biases the shaft 18, thereby providing resistance to the rotational movement of the shaft 18 and making it possible to stop the rotation of the shaft 18. Since the hook 14 rotates together with the shaft 18, the biasing unit 20 stopping the rotation of the shaft 18 allows the hook 14 to be maintained at any desired rotational position.

[0017] Figure 3 is a perspective view of the hook device 30 of the second embodiment, seen from the front. Figure 4 is a perspective view of the hook device 30 of the second embodiment, seen from the back. Figure 5 is an exploded view of the hook device 30 of the second embodiment. Compared to the hook device 10 shown in Figure 1, the hook device 30 of the second embodiment does not house the hook portion 34 in the base portion 32, and the shape of the base portion 32 is simplified.

[0018] The hook device 30 comprises a base portion 32, a hook portion 34, a bolt 36, a shaft portion 38, and a biasing portion 40. The base portion 32 has a main body portion 42, an axial hole portion 44, a seating portion 46, a circumferential projection portion 48, a positioning pin 50, a hook portion 52, a projection portion 54, a wall portion 56, a housing portion 58, and an insertion hole portion 60.

[0019] As shown in Figure 5, a pair of shaft holes 44 are formed, penetrating both side walls of the main body 42. The circumferential projections 48 are located on the periphery of the shaft holes 44 and are formed to protrude outward in the axial direction. The seating portion 46 protrudes outward from the outer circumferential surface of the main body 42 and is formed in a flange shape. The seating portion 46 is formed to match the shape of the hook portion 34 and is curved in a semicircular shape. The closed hook portion 34 is seated on the seating portion 46. The shape of the back side of the base portion 32 will be described with reference to a new drawing.

[0020] Figure 6 is a rear view of the base portion 32. A housing portion 58 for housing the biasing portion 40 is formed on the rear side of the base portion 32. A positioning pin 50, a hook portion 52, and a projection 54 are formed in the housing portion 58.

[0021] The positioning pin 50 is formed in a columnar shape and protrudes from the back surface of the main body portion 42. When the hook device 10 is attached to the mounting member, it is inserted into a positioning hole formed in the mounting member. Furthermore, when the bolt 36 is tightened, the positioning pin 50 prevents the base portion 32 from rotating together with the bolt 36.

[0022] The hooking portion 52 is formed in pairs, protruding from the back surface of the main body portion 42, and has a flexible claw shape. The pair of hooking portions 52 are formed spaced apart in the axial direction. As shown in Figure 4, the hooking portion 52 hooks onto the biasing portion 40, restricting the movement of the biasing portion 40 away from the housing portion 58, i.e., its movement out. This prevents the biasing portion 40 from coming off even when the housing portion 58 is opened on the back side of the base portion 32. Therefore, the biasing portion 40 can be easily assembled from the back side of the base portion 32. In addition, the design can be improved by housing the biasing portion 40.

[0023] The projections 54 are formed in pairs, protruding from the back surface of the main body 42. The pair of projections 54 are located axially outward from the hooking portion 52. In other words, the pair of hooking portions 52 are located between the pair of projections 54.

[0024] The wall portion 56 extends along the axial direction and constitutes part of the housing portion 58. The insertion hole portion 60 is formed to penetrate the main body portion 42 for inserting the bolt 16. The hole edge portion 62 shown in Figure 6 protrudes inward in part and has an arc-shaped portion 62a that bites into the thread groove of the bolt 36.

[0025] The base portion 32 is fixed to the mounting member by a bolt 36 inserted through the insertion hole 60. In the mounted state, the back surface of the base portion 32 sits on the mounting surface of the mounting member.

[0026] The hook portion 34 shown in Figure 5 is formed in a substantially U-shape. The hook portion 34 is fixed to the shaft portion 38 and is rotatably mounted relative to the base portion 32 together with the shaft portion 38. The hook portion 34 has a bearing portion 64, a connecting hole portion 66, and a fixed portion 68. The bearing portions 64 are located at both ends of the hook portion 34 and are formed in a pair facing each other. The hook portion 34 will be described with reference to the new drawings.

[0027] Figure 7 is a magnified view of the hook portion 34. The connecting hole 66 is formed through the center of the bearing portion 64. The fixed portion 68 is formed recessed on the outer surface of the bearing portion 64. The fixed portion 68 has a pair of opposing planes 68a.

[0028] The minute protrusions 70 are formed to protrude from the plane 68a, with one pair formed on each of the pair of planes 68a. The multiple minute protrusions 70 contact the shaft portion 38 to suppress play in the shaft portion 38.

[0029] Returning to Figure 5, the shaft portion 38 is formed in a cylindrical shape and is inserted into a pair of axial holes 44 and a pair of connecting holes 66. The shaft portion 38 has a fixing portion 38a formed at one end and a crimping portion 38b formed at the other end.

[0030] The fixing portion 38a protrudes radially outward and is formed in a flange shape. The fixing portion 38a has a straight side and engages with the flat surface 68a of the fixed portion 68. As a result, regardless of whether the hook portion 14 rotates in the opening or closing direction, its rotational torque is transmitted from the fixing portion 38a to the shaft portion 38. This causes the hook portion 34 and the shaft portion 38 to rotate together as a single unit.

[0031] The crimped portion 38b is formed in a hollow shape and is expanded in diameter by the crimping process, restricting the axial movement of the shaft portion 38. The fixing portion 38a and the crimped portion 38b are formed to be larger in diameter than the connecting hole portion 66.

[0032] The biasing portion 40 has a base portion 72 and contact pieces 74. The biasing portion 40 is a leaf spring formed by bending a metal plate. The base portion 72 is formed in a flat plate shape. The contact pieces 74 are formed in pairs, extending from both ends 72a of the base portion 72. The pair of contact pieces 74 bend from both ends 72a of the base portion 72 and extend toward each other. The contact pieces 74 have slits formed along the axial direction, making them flexible.

[0033] Figure 8 is a rear view of the hook device 30 of the second embodiment. The biasing portion 40 is housed in the housing portion 58 between a pair of shaft holes. The movement of the biasing portion 40 out of the housing portion 58 is restricted by a pair of hooking portions 52.

[0034] The base portion 72 of the biasing portion 40 is sandwiched between the hook portion 52 and the wall portion 56 and contacts the wall portion 56. This suppresses rattling of the biasing portion 40. The pair of hook portions 52 are located axially outward from the wall portion 56. A positioning pin 50 is located inside the biasing portion 40.

[0035] A pair of contact pieces 74 bend from both ends 72a of the base plate portion 72 and move closer to each other. This shortens the overall axial length of the biasing portion 40 while increasing the axial length of the base plate portion 72. This makes it easier to house the biasing portion 40 in the housing portion 58 and allows for a sufficiently large contact area between the base plate portion 72 and the wall portion 56. Therefore, it is possible to suppress the surface pressure on the wall portion 56 by the base plate portion 72, i.e., the load per unit area, and reduce the possibility of thermal creep occurring in the base plate portion 72. The base plate portion 72 is arranged parallel to the shaft portion 38. This allows the biasing portion 40 to efficiently bias the shaft portion 38.

[0036] The pair of protrusions 54 are located axially outward from the pair of hooks 52. The pair of protrusions 54 are located inside the biasing portion 40 and are positioned close to or in contact with the bent portion of the biasing portion 40. As a result, the protrusions 54 can restrict the axial movement of the biasing portion 40 and suppress rattling of the biasing portion 40.

[0037] The biasing portion 40 contacts the shaft portion 38 between the pair of axial holes 44 and biases the shaft portion 38 in a direction intersecting the axial direction of the shaft portion 38. This provides resistance to the rotational movement of the shaft portion 38, making it possible to stop the rotation of the shaft portion 38. Since the hook portion 34 rotates together with the shaft portion 38, the biasing portion 40 stopping the rotation of the shaft portion 38 maintains the hook portion 34 at any rotational position. The biasing portion 40 is located between the pair of axial holes 44, and since it only needs to bias the shaft portion 38 located between the pair of axial holes 44, there is a high degree of freedom in the shape to which the shaft portion 38 is contacted, and a structure that can easily transmit the biasing force can be made.

[0038] The biasing section 40 biases the shaft section 38 in the radial direction of the bolt 36. The radial direction of the bolt 36 is aligned with the mounting surface of the mounting member. Compared to the case where the biasing section 40 biases the shaft section 38 in a direction intersecting the mounting surface, the thickness of the base section 32 can be reduced by the biasing section 40 biasing the bolt 36 in the radial direction.

[0039] The hook portion 34 is fixed to the shaft portion 38 on the axial side of the pair of axial holes 44. This allows the size of the base portion 32 to be reduced in the axial direction of the shaft portion 38 compared to the case where the axial holes 44 of the base portion 32 are positioned on the axial side of the hook portion 34.

[0040] The present invention is not limited to the embodiments described above, and various modifications such as design changes can be made to each embodiment based on the knowledge of those skilled in the art, and embodiments with such modifications may also be included within the scope of the present invention.

[0041] In the embodiment, the biasing portion 40 is shown to be a leaf spring, but the embodiment is not limited to this. For example, the biasing portion 40 may be a coil spring. The coil spring is arranged along a direction perpendicular to the axial direction of the shaft portion 38.

[0042] The present invention relates to a hook device comprising a hook portion that is rotatably mounted on a base portion.

[0043] 10 Hook device, 12 Base part, 14 Hook part, 16 Bolt, 18 Shaft part, 18a Fixing part, 18b Crimping part, 20 Biasing part, 30 Hook device, 32 Base part, 34 Hook part, 36 Bolt, 38 Shaft part, 38a Fixing part, 38b Crimping part, 40 Biasing part, 42 Main body part, 44 Shaft hole part, 46 Seating part, 48 Circumferential projection, 50 Positioning pin, 52 Hooking part, 54 Projection, 56 Wall part, 58 Housing part, 60 Through hole part, 62 Hole edge part, 64 Bearing part, 66 Connecting hole part, 68 Fixed part, 70 Micro-protrusion, 72 Base plate part, 72a End portion, 74 abutment piece.

Claims

1. A hook device comprising: a base portion having a pair of axial holes; a shaft portion inserted into the pair of axial holes; a hook portion fixed to the shaft portion and rotatably mounted relative to the base portion together with the shaft portion; and a biasing portion that contacts the shaft portion between the pair of axial holes and biases it in a direction intersecting the axial direction of the shaft portion.

2. The hook device according to claim 1, characterized in that the base portion is attached to the mounting member by a bolt, and the biasing portion biases the shaft portion in the radial direction of the bolt.

3. The hook device according to claim 1 or 2, wherein the biasing portion has a base portion that abuts against the wall portion, and a pair of contact pieces that bend from both axial ends of the base portion and extend toward each other, and the base portion is arranged parallel to the shaft portion.

4. The hook device according to claim 1 or 2, characterized in that the base portion has a housing portion formed between a pair of shaft holes for housing the biasing portion, and a hooking portion that catches on the biasing portion and restricts the movement of the biasing portion away from the housing portion.

5. The hook device according to claim 4, characterized in that the base portion has a projection that restricts the axial movement of the biasing portion.

6. The hook device according to claim 4, characterized in that the biasing portion is a leaf spring, and the pair of contact pieces abut against the shaft portion.

7. The hook device according to claim 6, characterized in that the housing portion has a wall portion extending along the axial direction, and the substrate portion abuts against the wall portion.

8. The hook device according to claim 1 or 2, characterized in that the hook portion is fixed to the shaft portion on the axially outer side of the pair of axial holes.

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