Terminal stand

Abstract

To provide a terminal stand which is easy to be folded and in which a hinge connection part is hardly loosened.SOLUTION: A terminal stand includes: a rotary arm having one end hinge-connected with a bottom plate connecting seat of a bottom plate; and a top plate provided with a top plate connecting seat which is hinge-connected with the other end of the rotary arm. The other end of the rotary arm is hinge-connected with the top plate connecting seat through a connection mechanism. The connection mechanism includes: a bolt made to penetrate the top plate connecting seat and engaged with the other end of the rotary arm; a first annular material which is positioned on the top plate connecting seat and in which a plurality of first spiral teeth are formed in one end surface back to back with the top plate connecting seat over a whole periphery in a circumferential direction; a second annular material which is positioned on the other end of the rotary arm and in which a plurality of second spiral teeth are formed in one end surface opposed to the first annular material over the whole periphery in the circumferential direction; and an intermediate spiral material which is held between the first annular material and the second annular material and in which a plurality of intermediate spiral teeth are formed in both end surfaces over the whole periphery in the circumferential direction.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a stand for a terminal.

Background Art

[0002] Japanese Design Registration No. 1731224 discloses a stand for a terminal including a bottom plate provided with a connecting seat, a rotating arm having one end hinged to the connecting seat of the bottom plate, and a top plate provided with a connecting seat hinged to the other end of the rotating arm.

[0003] However, in the stand for a terminal described in Japanese Design Registration No. 1731224, since the rotating arm and the connecting seat are hinged by press-fitting, a certain amount of force needs to be applied to the stand for a terminal when folding the stand for a terminal. Also, during the use of the stand for a terminal, the hinged connection part tends to loosen, making it difficult to maintain a predetermined support posture.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Therefore, the present invention has been made in view of such circumstances, and an object thereof is to provide a stand for a terminal that is easy to fold and has a hinged connection part that is less likely to loosen.

[0005] According to an aspect of the present invention, there is provided a terminal stand including a bottom plate provided with a connecting seat, a rotating arm having one end hingedly connected to the connecting seat of the bottom plate, and a top plate provided with a connecting seat hingedly connected to the other end of the rotating arm. At least one of the one end of the rotating arm and the connecting seat of the bottom plate, and the other end of the rotating arm and the connecting seat of the top plate is hingedly connected through a connecting mechanism. The connecting mechanism includes a bolt that penetrates the connecting seat and is screwed with one end or the other end of the rotating arm, a first annular member positioned on the connecting seat so that the bolt is located on the inner peripheral side, and a first annular member having a plurality of first spiral teeth formed on the entire circumferential direction on one end surface facing away from the connecting seat. A second annular member positioned on one end or the other end of the rotating arm so that the bolt is located on the inner peripheral side, and a second annular member having a plurality of second spiral teeth formed on the entire circumferential direction on one end surface facing the first annular member. An intermediate annular member sandwiched between the first annular member and the second annular member so that the bolt is located on the inner peripheral side, and an intermediate annular member having a plurality of intermediate spiral teeth formed on both end surfaces that mesh with the plurality of first spiral teeth and the plurality of second spiral teeth on the entire circumferential direction. When the first annular member rotates in one circumferential direction with respect to the second annular member, no relative rotation occurs between the intermediate annular member and the second annular member. When the first annular member rotates in the other circumferential direction with respect to the second annular member, a terminal stand is provided in which no relative rotation occurs between the intermediate annular member and the first annular member.

[0006] According to an aspect of the present invention, it is possible to provide a terminal stand that is easy to fold and has a hinge connection portion that is not easily loosened.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0008] Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the accompanying drawings. In the present specification, the same reference numerals are assigned to the same elements throughout.

[0009] (Terminal Stand) Next, the configuration of the terminal stand 100 according to the present embodiment will be described with reference to FIGS. 1 and 2.

[0010] FIG. 1 is a perspective view showing the folded state of the terminal stand 100 according to the present embodiment. FIG. 2 is a perspective view showing the usage state of the terminal stand 100 according to the present embodiment.

[0011] As shown in FIGS. 1 and 2, the terminal stand 100 according to the present embodiment includes a base 1, a bottom plate 2 provided with bottom plate connecting seats 21 as a pair of connecting seats and rotatably provided on the base 1, a pair of rotating arms 3 each having one end hinged to the pair of bottom plate connecting seats 21 on the bottom plate 2, and a top plate 4 provided with top plate connecting seats 41 as a pair of connecting seats each hinged to the other end of the pair of rotating arms 3.

[0012] The terminal stand 100 can support a terminal in the deployed use state shown in FIG. 2 and can accommodate its main body in the folded state shown in FIG. 1. And by rotating the pair of rotating arms 3 and the top plate 4, the folding or deployment of the terminal stand 100 can be completed, so that the switching between the use state and the folded state of the terminal stand 100 can be realized.

[0013] The pair of bottom plate connecting seats 21 are provided on both sides of the bottom plate 2.

[0014] In the folded state of the terminal stand 100, a pair of top plate connecting seats 41 protruding toward the base 1 side (lower side) are provided on the surface of the top plate 4 facing the base 1. Also, in the deployed use state of the terminal stand 100, a pair of support claws 42 for supporting the terminal are provided on the side of the top plate 4 close to the base 1. Here, the terminal may be a tablet or an electronic device such as a smartphone.

[0015] In the present embodiment, the pair of rotating arms 3 are provided outside the pair of bottom plate connecting seats 21 and the pair of top plate connecting seats 41 respectively, but it is not limited thereto. For example, they may be provided inside the pair of bottom plate connecting seats 21 and the pair of top plate connecting seats 41 respectively, or one rotating arm 3 may be provided between the pair of bottom plate connecting seats 21 and the pair of top plate connecting seats 41, and the other rotating arm 3 may be provided outside the pair of bottom plate connecting seats 21 and the pair of top plate connecting seats 41.

[0016] In addition, in the present embodiment, both one end of the pair of rotating arms 3 and the pair of bottom plate connection seats 21 of the bottom plate 2, and the other end of the pair of rotating arms 3 and the pair of top plate connection seats 41 of the top plate 4 are hinged through the connection mechanism 5 (see FIGS. 3 and 4). However, the present invention is not limited thereto, and either one of one end of the pair of rotating arms 3 and the pair of bottom plate connection seats 21 of the bottom plate 2, and the other end of the pair of rotating arms 3 and the pair of top plate connection seats 41 of the top plate 4 may be hinged through the connection mechanism 5. The structures of the rotating arm 3 and the connection mechanism 5 will be described later.

[0017] In addition, the bottom plate 2 is provided on the base 1 so as to be rotatable through the rotation mechanism 6. The structure of the rotation mechanism 6 will be described later.

[0018] (Structure of the rotating arm and the connection mechanism) Next, with reference to FIGS. 3 to 8, the structures of the rotating arm 3 and the connection mechanism 5 according to the present embodiment will be described in detail. Regarding the connection mechanism 5, the connection mechanism 5 at the other end of the rotating arm 3 and the top plate connection seat 41 will be described, and the description of the connection mechanism 5 at one end of the rotating arm 3 and the bottom plate connection seat 21 will be omitted.

[0019] FIG. 3 is a perspective view of the rotating arm 3. FIG. 4 is a perspective view of the bottom plate 2. FIG. 5 is a perspective view of the top plate 4. FIG. 6 is a perspective view showing the terminal stand 100 in a folded state with one of the rotating arms 3 omitted. FIG. 7 is a front view showing the terminal stand 100 in a folded state with one of the rotating arms 3 omitted. FIG. 8 is a perspective view of the first annular member 52.

[0020] As shown in FIG. 3, the rotating arm 3 according to the present embodiment includes a long rotating arm main body 31, a pair of annular accommodating grooves 32 formed at both ends of the rotating arm main body 31 so as to face the bottom plate connecting seat 21 and the top plate connecting seat 41 respectively, and a female screw seat 33 provided on the inner peripheral side of the accommodating groove 32 as a rotating shaft that can be screwed with a bolt 51 (see FIG. 6 etc. described later), and a rotating arm positioning groove 34 as a first positioning member formed on the outer peripheral side of the accommodating groove 32 so as to communicate with the accommodating groove 32.

[0021] As shown in FIG. 4, the bottom plate connecting seat 21 is formed with a through hole 211 and a connecting seat positioning groove 212 as a second positioning member. The connecting seat positioning groove 212 is formed on the outer peripheral side of the through hole 211 so as to face the rotating arm 3 and communicate with the through hole 211.

[0022] As shown in FIG. 5, the top plate connecting seat 41 is formed with a through hole 411 and a connecting seat positioning groove 412 as a second positioning member. The connecting seat positioning groove 412 is formed on the outer peripheral side of the through hole 411 so as to face the rotating arm 3 and communicate with the through hole 411.

[0023] As shown in FIGS. 6 to 8, the connection mechanism 5 according to the present embodiment includes a bolt 51, a first annular member 52, a second annular member 53, an intermediate annular member 54, and a spring 55 as a biasing member (specifically, a compression coil spring). Here, the first annular member 52, the second annular member 53, and the intermediate annular member 54 are made of a non-metallic material such as nylon, for example.

[0024] In a state where the bolt 51 is screwed into the female screw seat 33 of the rotating arm 3, the first annular member 52, the second annular member 53, the intermediate annular member 54, and the spring 55 are accommodated in the accommodation groove 32 so as to be penetrated and supported by the female screw seat 33. Thereby, by accommodating the first annular member 52, the second annular member 53, the intermediate annular member 54, and the spring 55 in the accommodation groove 32 of the rotating arm 3 so as to be concealed, the exposure of the first annular member 52, the second annular member 53, the intermediate annular member 54, and the spring 55 can be avoided, and thus the aesthetic property of the entire terminal stand 100 can be improved.

[0025] The bolt 51 passes through the through hole 411 of the top plate connection seat 41 and is screwed into the female screw seat 33 at the other end of the rotating arm 3. The bolt 51 has a bolt rod 511 formed with an external thread and a bolt head 512 formed at one end of the bolt rod 511. As shown in FIGS. 6 and 7, the bolt head 512 is located inside the top plate connection seat 41.

[0026] As shown in FIGS. 6 and 7, on one end surface of the first annular member 52 facing away from the top plate connection seat 41 (that is, one end surface of the first annular member 52 facing the intermediate annular member 54), a plurality of first spiral teeth 521 are formed over the entire circumference in the circumferential direction. Each first spiral tooth 521 is configured to extend from the inner circumference of the first annular member 52 to the outer circumference of the first annular member 52. Further, each first spiral tooth 521 has a first straight wall 521a extending along the axial direction (specifically, the axial direction of the first annular member 52) and a first inclined wall 521b extending from the tip of the first straight wall 521a toward the base end of the adjacent first straight wall 521a in one circumferential direction (the direction indicated by the arrow R1 in FIGS. 6 and 7).

[0027] Also, as shown in FIG. 8, a positioning protrusion 522 as a protruding second positioned member is provided on the other end surface of the top plate connection seat 41 of the first annular member 52 facing the top plate connection seat 41. By engaging the positioning protrusion 522 with the connection seat positioning groove 412, the first annular member 52 can be positioned on the top plate connection seat 41 such that the bolt rod 511 of the bolt 51 is located on the inner peripheral side of the first annular member 52. That is, the first annular member 52 and the top plate connection seat 41 are integrally formed, and no relative rotation occurs between the two.

[0028] In this embodiment, the second positioning member and the second positioned member are each composed of the connection seat positioning grooves 212 and 412 and the positioning protrusion 522, but are not limited thereto. For example, they may be composed of a positioning protrusion provided on each connection seat (bottom plate connection seat 21, top plate connection seat 41) and a concave groove formed in the first annular member 52 so as to engage with the positioning protrusion. Further, the second positioning member and the second positioned member may be single or plural.

[0029] As shown in FIGS. 6 and 7, a plurality of second spiral teeth 531 are formed on one end surface of the second annular member 53 facing the first annular member 52 (that is, one end surface facing the intermediate annular member 54 of the first annular member 52) over the entire circumference in the circumferential direction. Each second spiral tooth 531 is configured to extend from the inner circumference of the second annular member 53 to the outer circumference of the second annular member 53. Further, each second spiral tooth 531 has a second straight wall 531a extending along the axial direction (specifically, the axial direction of the second annular member 53) and a second inclined wall 531b extending from the tip of the second straight wall 531a toward the base end of the adjacent second straight wall 531a in one circumferential direction (the direction indicated by the arrow R1 in FIGS. 6 and 7).

[0030] In this embodiment, the pitch of the first spiral tooth 521 and the pitch of the second spiral tooth 531 are the same. Also, the height of the first straight wall 521a (i.e., the axial distance from the tip of the first straight wall 521a to the base end of the first straight wall 521a) and the height of the second straight wall 531a (i.e., the axial distance from the tip of the second straight wall 531a to the base end of the second straight wall 531a) are the same, and the length of the first inclined wall 521b and the length of the second inclined wall 531b are the same. Thereby, the operating torque when rotating the top plate 4 in one direction can be made the same as the operating torque when rotating the top plate 4 in the other direction opposite to the one direction. The first spiral tooth 521 and the second spiral tooth 531 are not limited to this, and for example, they may be configured such that the pitches of both are different.

[0031] Further, on the outer periphery of the second annular member 53, a positioning protrusion 532 as a protruding first positioned member is provided. By engaging the positioning protrusion 532 with the rotation arm positioning groove 34, the second annular member 53 can be positioned in the accommodation groove 32 of the rotation arm 3 so that the bolt rod 511 of the bolt 51 is located on the inner peripheral side of the second annular member 53. That is, the second annular member 53 and the rotation arm 3 are integrally formed, and no relative rotation occurs between the two.

[0032] Also, in this embodiment, the first positioning member and the first positioned member are each composed of the rotation arm positioning groove 34 and the positioning protrusion 532, but are not limited to this. For example, they may be composed of a positioning protrusion provided on the rotation arm 3 and a concave groove formed in the second annular member 53 so as to engage with the positioning protrusion. Furthermore, the first positioning member and the first positioned member may be single or plural.

[0033] As shown in FIGS. 6 and 7, the intermediate annular member 54 is sandwiched between the first annular member 52 and the second annular member 53 such that the bolt rod 511 of the bolt 51 is located on the inner peripheral side of the intermediate annular member 54. Further, on both end faces of the intermediate annular member 54, a plurality of intermediate spiral teeth 541 are formed so as to mesh with a plurality of first spiral teeth 521 and a plurality of second spiral teeth 531 respectively over the entire circumferential direction.

[0034] Each intermediate spiral tooth 541 is configured to extend from the inner periphery of the intermediate annular member 54 to the outer periphery of the intermediate annular member 54. Each intermediate spiral tooth 541 has an intermediate straight wall 541a extending along the axial direction (specifically, the axial direction of the intermediate annular member 54), and an intermediate inclined wall 541b extending from the tip of the intermediate straight wall 541a to the base end of the adjacent intermediate straight wall 541a in the other circumferential direction (the direction indicated by the arrow R2 in FIGS. 6 and 7).

[0035] The entire intermediate straight wall 541a of each intermediate spiral tooth 541 facing the first annular member 52 and the entire first straight wall 521a are in surface contact, and the entire intermediate inclined wall 541b of each intermediate spiral tooth 541 facing the first annular member 52 and the entire first inclined wall 521b are in surface contact. On the other hand, the entire intermediate straight wall 541a of each intermediate spiral tooth 541 facing the second annular member 53 and the entire second straight wall 531a are in surface contact, and the entire intermediate inclined wall 541b of each intermediate spiral tooth 541 facing the second annular member 53 and the entire second inclined wall 531b are in surface contact. Thereby, one one-way rotation structure can be easily configured by the first annular member 52 and the intermediate annular member 54, and the other one-way rotation structure can be easily configured by the second annular member 53 and the intermediate annular member 54.

[0036] As shown in FIGS. 6 and 7, the spring 55 is provided on the side of the second annular member 53 facing away from the intermediate annular member 54. That is, the spring 55 is located between the second annular member 53 and the bottom surface of the accommodation groove 32. Further, the spring 55 can bring the first annular member 52 into close contact with the top plate connection seat 41 by pressing the second annular member 53 against the intermediate annular member 54 and the first annular member 52.

[0037] In this embodiment, the biasing member is composed of the spring 55, but it is not limited thereto. For example, it may be composed of a pair of magnets that repel each other. It is sufficient if the second annular member 53 can be pressed against the intermediate annular member 54 and the first annular member 52 to bring the first annular member 52 into close contact with the top plate connecting seat 41.

[0038] When a biasing force directed in one circumferential direction (the direction indicated by the arrow R1 in FIGS. 6 and 7) is applied to the top plate 4, the first annular member 52 rotates in one circumferential direction with respect to the second annular member 53, and no relative rotation occurs between the intermediate annular member 54 and the second annular member 53.

[0039] Specifically, when a biasing force directed in one circumferential direction is applied to the top plate 4, the first annular member 52 rotates in one circumferential direction with respect to the intermediate annular member 54, and the first spiral teeth 521 of the first annular member 52 slide along the intermediate inclined wall 541b. After overcoming the tip of the intermediate inclined wall 541b (i.e., the tip of the intermediate straight wall 541a), it seats on the base end of the adjacent intermediate inclined wall 541b (i.e., the base end of the intermediate straight wall 541a). At this time, since the intermediate straight wall 541a and the second straight wall 531a are in contact, no relative rotation occurs between the intermediate annular member 54 and the second annular member 53, and both rotate as a unit in the other circumferential direction (the direction indicated by the arrow R2 in FIGS. 6 and 7) with respect to the first annular member 52. Thereby, it is possible to realize the rotation of the top plate 4 in one circumferential direction.

[0040] Also, in the process where the first annular member 52 rotates in one circumferential direction with respect to the intermediate annular member 54 and the second annular member 53, the intermediate annular member 54 and the second annular member 53 reciprocate in the axial direction. Specifically, when the first spiral tooth 521 of the first annular member 52 slides along the intermediate inclined wall 541b, the intermediate annular member 54 and the second annular member 53 move in a direction away from the top plate connecting seat 41 against the pressing force (biasing force) of the spring 55 (i.e., in a direction toward the bottom surface of the accommodating groove 32). After the first spiral tooth 521 crosses the tip of the intermediate inclined wall 541b (i.e., the tip of the intermediate straight wall 541a) and seats on the base end of the adjacent intermediate inclined wall 541b (i.e., the base end of the intermediate straight wall 541a), the intermediate annular member 54 and the second annular member 53 move in a direction approaching the top plate connecting seat 41 due to the pressing force of the spring 55.

[0041] When a biasing force toward the other circumferential direction (the direction indicated by the arrow R2 in FIGS. 6 and 7) is applied to the top plate 4, the first annular member 52 rotates in the other circumferential direction with respect to the second annular member 53, and no relative rotation occurs between the intermediate annular member 54 and the first annular member 52.

[0042] Specifically, when a biasing force toward the other circumferential direction is applied to the top plate 4, the first annular member 52 rotates in the other circumferential direction with respect to the second annular member 53, and the intermediate spiral tooth 541 of the intermediate annular member 54 slides along the second inclined wall 531b. After crossing the tip of the second inclined wall 531b (i.e., the tip of the second straight wall 531a), it seats on the base end of the adjacent second inclined wall 531b (i.e., the base end of the second straight wall 531a). At this time, since the intermediate straight wall 541a and the first straight wall 521a are in contact, no relative rotation occurs between the intermediate annular member 54 and the first annular member 52, and the two rotate as a unit in the other circumferential direction (the direction indicated by the arrow R2 in FIGS. 6 and 7) with respect to the second annular member 53. Thereby, it is possible to realize the rotation of the top plate 4 in the other circumferential direction.

[0043] Also, in the process where the first annular member 52 and the intermediate annular member 54 rotate in the other circumferential direction with respect to the second annular member 53, the second annular member 53 reciprocates in the axial direction. Specifically, when the intermediate spiral teeth 541 of the intermediate annular member 54 slide along the second inclined wall 531b, the second annular member 53 moves in a direction away from the top plate connection seat 41 (i.e., the direction toward the bottom surface of the accommodation groove 32) against the pressing force of the spring 55. After the intermediate spiral teeth 541 cross over the tip of the second inclined wall 531b (i.e., the tip of the second straight wall 531a) and seat on the base end of the adjacent second inclined wall 531b (i.e., the base end of the second straight wall 531a), the second annular member 53 moves in a direction approaching the top plate connection seat 41 due to the pressing force of the spring 55.

[0044] When no biasing force is applied to the top plate 4, due to the biasing force of the spring 55, the first spiral teeth 521 of the first annular member 52 mesh with the intermediate spiral teeth 541 of the intermediate annular member 54, and the second spiral teeth 531 of the second annular member 53 mesh with the intermediate spiral teeth 541 of the intermediate annular member 54. At this time, no relative rotation occurs among the three members of the first annular member 52, the second annular member 53, and the intermediate annular member 54. Thereby, even if the terminal is placed on the top plate 4, a predetermined angle formed between the top plate 4 and the rotation arm 3 can be stably maintained.

[0045] In this embodiment, by combining one one-way rotation structure composed of the first annular member 52 and the intermediate annular member 54 and the other one-way rotation structure composed of the second annular member 53 and the intermediate annular member 54, the bidirectional rotation of the top plate 4 can be easily realized, and loosening due to use is less likely to occur between the other end of the rotation arm 3 as the hinge connection portion and the top plate connection seat 41. As a result, a terminal stand 100 that is easy to fold and has a hinge connection portion that is not easily loosened can be provided, and the service life of the terminal stand 100 can be extended. Also, in the process where the top plate 4 rotates, an operating torque due to the displacement between the meshing spiral teeth can be experienced.

[0046] In addition, since the same spring 55 is shared by one one-way rotation structure and the other one-way rotation structure, it is not necessary to provide a spring for each one-way rotation structure, and the connection mechanism 5 can be simplified.

[0047] (Structure of the rotation mechanism) Next, the structure of the rotation mechanism 6 will be described in detail with reference to FIGS. 9 to 11.

[0048] FIG. 9 is a bottom view of the terminal stand 100 with the base 1 omitted. FIG. 10 is a perspective view of the shaft member 61. FIG. 11 is a perspective view of the rotating disk 64.

[0049] As shown in FIGS. 9 to 11, the rotation mechanism 6 according to the present embodiment includes a shaft member 61, a spring 62 (specifically, a compression coil spring), a ball 63, and an annular (specifically, a circular ring-shaped) rotating disk 64.

[0050] As shown in FIGS. 9 and 10, the shaft member 61 includes a substantially columnar shaft body 611 that can be inserted into the through hole 22 (see FIG. 4) of the bottom plate 2, a flange plate 612 provided on one end surface (upper end surface) of the shaft body 611 so as not to be inserted into the through hole 22 of the bottom plate 2, a pair of screw holes 613 formed on the other end surface (lower end surface) of the shaft body 611, and a pair of accommodation recesses 614 extending along the radial direction of the shaft body 611 from the outer periphery of the shaft body 611. Note that the flange plate 612 can prevent the bottom plate 2 from falling off from one end side of the shaft body 611.

[0051] As shown in FIGS. 9 and 10, the spring 62 is accommodated in the accommodation recess 614. The ball 63 is provided at one end of the spring 62 so that a part of it protrudes from the accommodation recess 614.

[0052] As shown in FIGS. 9 to 11, the rotating disk 64 is provided on the outer peripheral side of the shaft body 611. The rotating disk 64 includes a large ring portion 641, a small ring portion 642 connected to the large ring portion 641 such that the inner diameter is the same as that of the large ring portion 641, a plurality of grooves 643 formed in the entire inner periphery of the large ring portion 641 and the small ring portion 642 so as to be able to accommodate a part of the ball 63, and a plurality of positioning convex portions 644 as positioning members protruding from the outer periphery of the small ring portion 642 at a predetermined interval from each other.

[0053] On the other hand, as shown in FIG. 4, a substantially circular accommodation groove 23 that can accommodate the small ring portion 642 and communicates with the through hole 22 is formed on the bottom surface of the bottom plate 2. On the outer peripheral side of the accommodation groove 23, a plurality of positioning concave grooves 24 as positioning members protruding from the outer periphery of the accommodation groove 23 at a predetermined interval from each other are formed.

[0054] As shown in FIGS. 9 to 11, by engaging the positioning convex portion 644 with the positioning concave groove 24, the rotating disk 64 can be positioned on the bottom plate 2 such that the small ring portion 642 of the rotating disk 64 is accommodated in the accommodation groove 23 of the bottom plate 2. That is, the rotating disk 64 and the bottom plate 2 are integrally formed, and no relative rotation occurs between them. Next, after inserting (penetrating) the shaft body 611 of the shaft member 61 through the through hole 22 of the bottom plate 2 and the inner peripheral side of the rotating disk 64, the shaft member 61 is fixed to the base 1 with bolts. In this state, the shaft body 611 is located on the inner peripheral side of the rotating disk 64, and a part of the ball 63 provided at one end of the spring 62 is engaged with the groove 643 of the rotating disk 64. When the bottom plate 2 is rotated, the bottom plate 2 and the rotating disk 64 rotate integrally, and the spring 62 continuously expands and contracts, so that the ball 63 can be accommodated in different grooves 643, and the operating torque when the bottom plate 2 is rotated can be experienced.

[0055] In addition, since the large ring portion 641 protrudes from the accommodation groove 23 of the bottom plate 2, the base 1 and the bottom plate 2 can be separated by the rotating disk 64 (specifically, the large ring portion 641). In other words, by providing the rotating disk 64 (specifically, the large ring portion 641) between the base 1 and the bottom plate 2, a gap can be interposed between the base 1 and the bottom plate 2. Thereby, in the process of rotating the bottom plate 2, by making the bottom surface of the large ring portion 641 with a relatively small area be in sliding contact with the upper surface of the base 1, it is possible to avoid the direct sliding contact between the bottom surface of the bottom plate 2 with a relatively large area and the upper surface of the base 1. As a result, the rotation of the bottom plate 2 can be smoothly performed.

[0056] In this embodiment, the rotation mechanism 6 is configured to have the rotating disk 64, but it is not limited thereto, and it may be configured without the rotating disk 64. In this case, the plurality of grooves for accommodating a part of the ball 63 are directly formed on the entire inner circumference of the bottom plate 2.

[0057] (Function and effect according to this embodiment) Next, the function and effect of the terminal stand 100 according to this embodiment will be described.

[0058] The terminal stand 100 according to this embodiment includes a bottom plate 2 provided with a connecting seat 21, a rotating arm 3 having one end hingedly connected to the connecting seat 21 of the bottom plate 2, and a top plate 4 provided with a connecting seat 41 hingedly connected to the other end of the rotating arm 3. At least one of the connection between one end of the rotating arm 3 and the connecting seat 21 of the bottom plate 2 and the connection between the other end of the rotating arm 3 and the connecting seat 41 of the top plate 4 is hingedly connected through a connection mechanism 5. The connection mechanism 5 includes a bolt 51 that penetrates the connecting seats 21 and 41 and is screwed with one end or the other end of the rotating arm 3, a first annular member 52 positioned on the connecting seats 21 and 41 such that the bolt 51 is located on the inner peripheral side, and a plurality of first spiral teeth 521 are formed on one end surface facing away from the connecting seats 21 and 41 over the entire circumference in the circumferential direction. A second annular member 53 positioned on one end or the other end of the rotating arm 3 such that the bolt 51 is located on the inner peripheral side, and a plurality of second spiral teeth 531 are formed on one end surface facing the first annular member 52 over the entire circumference in the circumferential direction. An intermediate annular member 54 sandwiched between the first annular member 52 and the second annular member 53 such that the bolt 51 is located on the inner peripheral side, and a plurality of intermediate spiral teeth 541 meshing with the plurality of first spiral teeth 521 and the plurality of second spiral teeth 531 are formed on both end surfaces over the entire circumference in the circumferential direction. When the first annular member 52 rotates in one circumferential direction with respect to the second annular member 53, no relative rotation occurs between the intermediate annular member 54 and the second annular member 53. When the first annular member 52 rotates in the other circumferential direction with respect to the second annular member 53, no relative rotation occurs between the intermediate annular member 54 and the first annular member 52.

[0059] According to this configuration, by combining one one-piece rotating structure composed of the first annular member 52 and the intermediate annular member 54 and the other one-piece rotating structure composed of the second annular member 53 and the intermediate annular member 54, the bidirectional rotation of the top plate 4 can be easily realized, and it is difficult for loosening due to use to occur between one end or the other end of the rotating arm 3 as a hinge connection point and the connecting seats 21 and 41. As a result, a terminal stand 100 that is easy to fold and has a hinge connection point that is not easily loosened can be provided, and the service life of the terminal stand 100 can be extended. Further, in the process of the top plate 4 rotating, an operating torque due to the displacement between the meshing spiral teeth can be experienced.

[0060] Further, in the present embodiment, the connection mechanism 5 further has a spring 55 provided on one side of the second annular member 53 facing away from the intermediate annular member 54 so as to press the second annular member 53 against the intermediate annular member 54.

[0061] According to this configuration, since the same spring 55 is shared by one one-piece rotating structure and the other one-piece rotating structure, it is not necessary to provide a spring for each one-piece rotating structure, and the connection mechanism 5 can be simplified.

[0062] Further, in the present embodiment, a female screw seat 33 that engages with the bolt 51 and a receiving groove 32 located on the outer peripheral side of the female screw seat 33 are formed at one end or the other end of the rotating arm 3, and the first annular member 52, the second annular member 53, and the intermediate annular member 54 are received in the receiving groove 32 so as to be supported by the female screw seat 33 located on their inner peripheral sides.

[0063] According to this configuration, by accommodating the first annular member 52, the second annular member 53, the intermediate annular member 54, and the spring 55 of the connection mechanism 5 in the receiving groove 32 of the rotating arm 3 so as to be concealed, the exposure of the first annular member 52, the second annular member 53, the intermediate annular member 54, and the spring 55 can be avoided, and thus the aesthetic appearance of the entire terminal stand 100 can be improved.

[0064] In addition, in the present embodiment, each first spiral tooth 521 has a first straight wall 521a extending along the axial direction and a first inclined wall 521b extending from the tip of the first straight wall 521a toward the base end of the adjacent first straight wall 521a in one circumferential direction. Each second spiral tooth 531 has a second straight wall 531a extending along the axial direction and a second inclined wall 531b extending from the tip of the second straight wall 531a toward the base end of the adjacent second straight wall 531a in one circumferential direction.

[0065] According to this configuration, one one-way rotation structure can be easily configured by the first annular member 52 and the intermediate annular member 54, and the other one-way rotation structure can be easily configured by the second annular member 53 and the intermediate annular member 54.

[0066] In addition, in the present embodiment, the terminal stand 100 further includes a base 1 and a rotation mechanism 6. The bottom plate 2 is rotatably provided on the base 1 through the rotation mechanism 6. The rotation mechanism 6 includes a shaft member 61 fixed to the base 1 so as to be inserted into the bottom plate 2, a housing recess 614 formed in the shaft member 61 so as to extend along the radial direction of the shaft member 61 from the outer circumference of the shaft member 61, a spring 62 housed in the housing recess 614, a ball 63 provided at one end of the spring 62, an annular rotating disk 64 provided on the outer peripheral side of the shaft member 61 and positioned on the bottom plate 2, and a plurality of grooves 643 formed over the entire inner circumference of the rotating disk 64 so as to be able to house the ball 63. The rotating disk 64 is provided between the base 1 and the bottom plate 2 such that there is a gap between the base 1 and the bottom plate 2.

[0067] According to this configuration, when the bottom plate 2 is rotated, the bottom plate 2 and the rotating disk 64 rotate integrally, and the spring 62 continuously expands and contracts, so that the ball 63 can be housed in different grooves 643, and the operating torque when the bottom plate 2 is rotated can be experienced.

[0068] Also, in the process of rotating the bottom plate 2, by making the bottom surface of the relatively small large ring portion 641 in sliding contact with the upper surface of the base 1, it is possible to avoid the direct sliding contact between the bottom surface of the relatively large bottom plate 2 and the upper surface of the base 1. As a result, the rotation of the bottom plate 2 can be performed smoothly.

[0069] As described above, the embodiments of the present invention have been described. However, the above embodiments merely show a part of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments.

Explanation of Reference Numerals

[0070] 1 Base 2 Bottom plate 3 Rotating arm 4 Top plate 5 Connecting mechanism 21 Bottom plate connecting seat (connecting seat) 41 Top plate connecting seat (connecting seat) 51 First annular member 52 Second annular member 53 Intermediate annular member 100 Terminal stand 521 First spiral tooth 531 Second spiral tooth 541 Intermediate spiral tooth

Claims

1. A bottom plate provided with a connecting seat, A rotating arm having one end hingedly connected to the connecting seat of the bottom plate, A top plate provided with a connecting seat hingedly connected to the other end of the rotating arm, comprising: At least one of the connection between one end of the rotating arm and the connecting seat of the bottom plate and the connection between the other end of the rotating arm and the connecting seat of the top plate is hingedly connected through a connection mechanism, The connection mechanism is A bolt that penetrates the connecting seat and is screwed with one end or the other end of the rotating arm, A first annular member positioned on the connecting seat so that the bolt is located on the inner circumferential side, and a plurality of first spiral teeth are formed on one end face facing away from the connecting seat over the entire circumference in the circumferential direction, A second annular member positioned on one end or the other end of the rotating arm so that the bolt is located on the inner circumferential side, and a plurality of second spiral teeth are formed on one end face facing the first annular member over the entire circumference in the circumferential direction, An intermediate annular member sandwiched between the first annular member and the second annular member so that the bolt is located on the inner circumferential side, and a plurality of intermediate spiral teeth that mesh with a plurality of the first spiral teeth and a plurality of the second spiral teeth are formed on both end faces over the entire circumference in the circumferential direction, When the first annular member rotates in one circumferential direction with respect to the second annular member, no relative rotation occurs between the intermediate annular member and the second annular member, When the first annular member rotates in the other circumferential direction with respect to the second annular member, no relative rotation occurs between the intermediate annular member and the first annular member, A stand for a terminal.

2. The connection mechanism further includes a biasing member provided on one side of the second annular member facing away from the intermediate annular member so as to press the second annular member against the intermediate annular member, The stand for a terminal according to Claim 1.

3. On one end or the other end of the rotating arm, a female screw seat that is screwed with the bolt and a receiving groove located on the outer circumferential side of the female screw seat are formed, The first annular member, the second annular member, and the intermediate annular member are received in the receiving groove so as to be supported by the female screw seat located on their inner circumferential sides, The stand for a terminal according to Claim 1.

4. Each of the first spiral teeth Has a first straight wall extending along the axial direction, And a first inclined wall extending from the tip of the first straight wall towards the base end of the adjacent first straight wall in one circumferential direction, Each of the second spiral teeth a second straight wall extending along the axial direction, a second inclined wall extending from the tip of the second straight wall to the base end of the adjacent second straight wall in one circumferential direction, and having, The terminal stand according to claim 1.

5. further comprising a base and a rotation mechanism, the bottom plate is provided on the base rotatably through the rotation mechanism, the rotation mechanism is, a shaft member fixed to the base so as to be inserted into the bottom plate, a receiving recess formed in the shaft member so as to extend along the radial direction of the shaft member from the outer periphery of the shaft member, a spring housed in the receiving recess, a ball provided at one end of the spring, an annular rotating disk provided on the outer peripheral side of the shaft member and positioned on the bottom plate, a plurality of grooves formed over the entire inner circumference of the rotating disk so as to be able to house the ball, and having, the rotating disk is provided between the base and the bottom plate so that a gap exists between the base and the bottom plate. The terminal stand according to claim 1.

6. further comprising a base and a rotation mechanism, the bottom plate is provided on the base rotatably through the rotation mechanism, the rotation mechanism is, a shaft member fixed to the base so as to be inserted into the bottom plate, a receiving recess formed in the shaft member so as to extend along the radial direction of the shaft member from the outer periphery of the shaft member, a spring housed in the receiving recess, a ball provided at one end of the spring, a plurality of grooves formed over the entire inner circumference of the bottom plate so as to be able to house the ball, and having, The terminal stand according to claim 1.

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