State keeping mechanism of footrest device

Abstract

The utility model provides a state keeping mechanism of a footrest device, which comprises a main support piece, a first support piece, a second support piece, a linkage piece and a telescopic component, the linkage piece and the second support piece are rotatably connected on the main support piece, the first support piece is rotatably connected on the linkage piece, and the linkage piece is configured to link the first support piece and the second support piece; the two ends of the telescopic assembly are rotationally connected to the linkage piece and the main supporting piece correspondingly, an elastic piece is arranged in the telescopic assembly, and the elastic piece is configured to enable the telescopic assembly to provide supporting force for the linkage piece; the first supporting piece and the second supporting piece have an unfolded state and a folded state, in the folded state, the first supporting piece and the second supporting piece are located below the main supporting piece, in the unfolded state, the first supporting piece and the second supporting piece are flatly laid front and back side by side, and in the unfolded state and the folded state, the first supporting piece and the second supporting piece are folded. The telescopic assemblies provide supporting force for keeping the state of the linkage piece unchanged.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture field, especially a state keeping mechanism of foot rest device. BACKGROUND

[0002] On the existing seat, the foot rest device has been a common means for improving the use comfort, however, the comfort of the foot rest plate with the narrow plate surface is still poor, so the manufacturers gradually shift their focus to the foot rest plate with the larger plate surface, such as the foot rest device composed of two foldable foot rest plates.

[0003] After folding the two foot rest plates, they can be folded to the lower part of the seat, in some schemes, the folded foot rest plates are turned over above the support rod group, which makes the seat or the bottom disc have to reserve the accommodation space for the foot rest plate, and because the thickness of the two folded foot rest plates is larger, the reserved space also becomes more, which is inconvenient in design and production.

[0004] There are also schemes that make the two foot rest plates fold below the support rod group, so that when they are folded to the lower part of the seat, they can be attached to the lower part of the seat without additional accommodation space, however, in such a scheme, the two foot rest plates lose the support of the support rod group, and are easy to sag due to the weight, and some locking mechanisms or retaining mechanisms for support are complex in structure, and are not easy to produce and assemble. SUMMARY

[0005] In order to solve the above technical problems, the utility model provides a state keeping mechanism of foot rest device, including main support piece, first support piece, second support piece, linkage and telescopic assembly, linkage is used for making first support piece, second support piece linkage on main support piece, and switches in the state of folding and unfolding, through the action of telescopic assembly and elastic piece, the state of first support piece and second support piece can be kept, and the movement of both in the non-operation state switching is prevented, so as to ensure the stability of the state of folding and unfolding, and first support piece and second support piece can work stably.

[0006] The technical scheme of the utility model is realized as follows:

[0007] The state maintaining mechanism of the foot rest device comprises a main support, a first support, a second support, a linkage and a telescopic assembly. The linkage and the second support are rotationally connected to the main support, and the first support is rotationally connected to the linkage. The linkage is configured to link the first support and the second support. The telescopic assembly has two ends rotationally connected to the linkage and the main support respectively. An elastic member is arranged in the telescopic assembly and configured to provide a support force to the linkage. The first support and the second support have an unfolded state and a folded state. In the folded state, the first support and the second support are located below the main support. In the unfolded state, the first support and the second support are laid side by side. In both the unfolded state and the folded state, the telescopic assembly provides a support force to the linkage to maintain the state unchanged.

[0008] The state of the first support and the second support is maintained by the telescopic assembly and the elastic member. In the folded state, the first support and the second support are folded below the main support. In the unfolded state, the first support and the second support can support the leg of a human body, and the first support and the second support remain unfolded without being folded back due to the force of the foot rest.

[0009] Preferably, the telescopic assembly comprises a sliding rotary seat and a retaining member. The sliding rotary seat is provided with a rotating shaft and rotationally connected to the main support through the rotating shaft. The retaining member is inserted into the sliding rotary seat, and the head of the retaining member is rotationally connected to the linkage. The sliding rotary seat and the retaining member are arranged to slide relative to each other and adaptively extend and retract when the linkage rotates. In both the unfolded state and the folded state, the sliding rotary seat and the retaining member provide a support force to the linkage to maintain the state unchanged, and further provide a support force to the first support and the second support to maintain the state unchanged.

[0010] Preferably, the retaining member comprises a main body and a head. The main body is fixedly connected to the head, and the main body is inserted into the sliding rotary seat. A sliding groove is formed in the main body, and the rotating shaft is inserted into the sliding groove. The rotating shaft and the sliding groove provide extension and retraction limiting for the telescopic assembly, preventing the sliding rotary seat and the retaining member from being separated due to excessive extension and retraction.

[0011] Preferably, the head of the retaining member and the sliding rotary seat are both provided with a blocking protrusion for increasing the contact area with the elastic member. The blocking protrusion also prevents the elastic member from being separated from the retaining member and the sliding rotary seat.

[0012] Preferably, the main support is provided with a mounting groove, and the linkage is arranged in the mounting groove. The main support is also provided with an avoiding groove, which is in communication with the mounting groove. The telescopic assembly is rotationally arranged in the avoiding groove. The structure is compact, reducing the risk of pinching hands and avoiding the dropping of foreign matters into the interior, causing internal jamming and damage.

[0013] As preferred, a containing groove is formed on the linkage, the containing groove is communicated with the mounting groove and the avoiding groove, and the telescopic assembly is rotatably arranged in the mounting groove. The containing groove, the mounting groove and the avoiding groove provide the movement space for the rotation and telescoping of the telescopic assembly.

[0014] As preferred, the main support member is provided with a first gear, the first gear is located in the linkage and rotatably connected with the linkage, the first support member is provided with a second gear, the second gear is located in the linkage and rotatably connected with the linkage, the first gear is engaged with the second gear, and the first gear and the second gear are configured to drive the linkage to rotate when the first support member is overturned. When the first support member is overturned, the first support member rotates around the first gear while rotating by itself through the engagement of the first gear and the second gear, thereby driving the linkage to rotate and further driving the second support member to overturn, so as to realize the linkage and state switching of the first support member and the second support member.

[0015] As preferred, the rotation connecting points of the telescopic assembly and the first support member on the linkage are located on both sides of the rotation points of the linkage and the main support member. In the folding state, the first support member is located below the linkage, and the telescopic assembly provides upward and forward supporting force for the linkage. In the unfolded state, the first support member is located above the linkage, and the telescopic assembly provides downward and forward supporting force for the linkage. The first support member and the telescopic assembly are eccentrically arranged on the linkage, so that the supporting force provided by the telescopic assembly for the linkage can act on the first support member, thereby maintaining the state.

[0016] As preferred, a connecting rod is arranged between the linkage and the second support member, and the two ends of the connecting rod are rotatably connected with the linkage and the second support member. The connecting rod is needed to realize the preset linkage between the linkage and the second support member.

[0017] The design starting point, concept and beneficial effects of the utility model with the above technical scheme are as follows:

[0018] Through the action of the telescopic assembly and the elastic member, the state of the first support member and the second support member can be maintained. In the folding state, the first support member and the second support member can be folded below the main support member, and in the unfolded state, the first support member and the second support member can be provided with supporting force for supporting the leg of the human body, so that the first support member and the second support member can be kept unfolded and will not be retracted due to the force of the foot rest. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the foot rest device in the folding state in the embodiment of the utility model;

[0020] Figure 2 It is a sectional view of the foot rest device in the folding state in the embodiment of the utility model;

[0021] Figure 3 It is the perspective structural schematic view of the foot placing device in the unfolded state in the embodiment of the utility model;

[0022] Figure 4 It is the sectional view of the foot placing device in the unfolded state in the embodiment of the utility model;

[0023] Figure 5 It is the perspective structural schematic view of the telescopic assembly arranged in the main supporting piece in the embodiment of the utility model;

[0024] Figure 6 It is the perspective structural schematic view of the telescopic assembly in the embodiment of the utility model;

[0025] Figure 7 It is the perspective structural schematic view of the linkage in the embodiment of the utility model;

[0026] Figure 8 It is the perspective structural schematic view of the main supporting piece in the embodiment of the utility model.

[0027] The reference signs are as follows: main supporting piece 1, mounting groove 11, avoiding groove 12, first gear 13, first supporting piece 2, second gear 21, second supporting piece 3, linkage 4, containing groove 41, first mounting space 42, second mounting space 43, sliding rotary seat 5, rotating shaft 51, retaining piece 6, head 61, main body 62, sliding groove 621, elastic piece 7, shaft sleeve 8, connecting rod piece 9, blocking convex part 10. DETAILED DESCRIPTION

[0028] In order to enable the above-mentioned purposes, features and advantages of the utility model to be more clearly understood, the utility model will be further described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

[0029] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the utility model, however, the utility model can also be implemented in other manners different from the description herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.

[0030] In the description of the utility model, the terms 'first','second', 'third' and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] The specific embodiments of the utility model are as follows:

[0032] As Figures 1-5The utility model provides a kind of state maintaining mechanism of footrest device, including main support piece 1, first support piece 2, second support piece 3, linkage 4 and telescopic assembly, linkage 4 and second support piece 3 are rotationally connected on main support piece 1, first support piece 2 is rotationally connected on linkage 4, linkage 4 is configured as linkage first support piece 2 and second support piece 3;Telescopic assembly both ends are rotationally connected on linkage 4 and main support piece 1 respectively, and telescopic assembly is equipped with elastic member 7, elastic member 7 is configured as the support force that telescopic assembly gives linkage 4;First support piece 2 and second support piece 3 have unfolded state and folding state, in folding state, first support piece 2 and second support piece 3 are located below main support piece 1, in unfolded state, first support piece 2 and second support piece 3 are parallel laid in front and back, and in unfolded state and folding state, telescopic assembly gives linkage 4 unchanged state support force.

[0033] By the effect of telescopic assembly and elastic member 7, the state of first support piece 2 and second support piece 3 is maintained, which can make first support piece 2 and second support piece 3 fold under main support piece 1 in folding state, and can give first support piece 2 and second support piece 3 the support force that can support human leg in unfolded state, so that first support piece 2 and second support piece 3 remain unfolded and will not be retracted due to footrest stress.

[0034] Specifically, as shown in Figure 5 、 6 Telescopic assembly includes sliding rotary seat 5 and retaining member 6, sliding rotary seat 5 is provided with shaft 51 and is rotationally connected with main support piece 1 through shaft 51, retaining member 6 is inserted in sliding rotary seat 5, and the head 61 of retaining member 6 is rotationally connected with linkage 4;Retaining member 6 includes main body 62, which is fixedly connected with head 61, main body 62 is inserted in sliding rotary seat 5, and sliding slot 621 is formed in main body 62, and shaft 51 is inserted in sliding slot 621;Shaft 51 and sliding slot 621 provide telescopic limit for telescopic assembly, to prevent sliding rotary seat 5 and retaining member 6 from being separated due to excessive telescoping;Head 61 of retaining member 6 and sliding rotary seat 5 are both provided with blocking protrusions 10 for increasing contact area with elastic member 7;Elastic member 7 is a spring, and blocking protrusions 10 can also prevent elastic member 7 from being separated from retaining member 6 and sliding rotary seat 5;Sliding rotary seat 5 and retaining member 6, which are arranged to slide relative to each other, can produce self-adapting telescoping when linkage 4 rotates, and can give linkage 4 support force to keep stationary in two states, and further give first support piece 2 and second support piece 3 support force to keep stationary.

[0035] Furthermore, the rotation connecting points of the telescopic assembly and the first support 2 on the linkage 4 are respectively located on both sides of the rotation points of the linkage 4 and the main support 1, i.e. the first support 2 and the telescopic assembly are eccentrically arranged on the linkage 4, thus when the telescopic assembly gives the linkage 4 a supporting force, the force can be applied to the first support 2; in the folding state, the first support 2 is located below the linkage 4, and the telescopic assembly gives the linkage 4 an upward and forward supporting force; in the unfolded state, the first support 2 is located above the linkage 4, and the telescopic assembly gives the linkage 4 a downward and forward supporting force.

[0036] Further, as shown in Figures 4-8 the state retention mechanism is applied to the footrest device, in which the main support 1 has two and is arranged in parallel and spaced apart, and the telescopic pipe is connected thereon for being mounted on the seat, the first support 2 and the second support 3 are arranged between the two main supports 1; specifically, the linkage 4 is circular, the main support 1 is provided with a circular mounting groove 11, the linkage 4 is arranged in the mounting groove 11, and the left and right ends of the first support 2 and the second support 3 abut against the linkage 4; the lower end surface of the main support 1 is open to form an avoiding groove 12, the avoiding groove 12 is communicated with the mounting groove 11, the telescopic assembly is rotationally arranged in the avoiding groove 12, specifically, the sliding rotation seat 5 is rotationally connected in the avoiding groove 12 through the rotation shaft 51, and the telescopic assembly as a whole moves in the avoiding groove 12; the linkage 4 is radially recessed to form a containing groove 41, the containing groove 41 is communicated with the mounting groove 11 and the avoiding groove 12, the head 61 of the retention member 6 is rotationally arranged in the mounting groove 11, and the containing groove 41, the mounting groove 11 and the avoiding groove 12 give the telescopic assembly a rotation and telescopic movement space; thus the structure is wrapped, the risk of pinching hands is reduced, and foreign matters are prevented from falling into the interior to cause internal jamming and damage.

[0037] Further, the first gear 13 is arranged on the main support 1, the first gear 13 is arranged in the installation slot 11, the first gear 13 is arranged in the linkage 4 and is rotatably connected with the linkage 4, the second gear 21 is arranged on the first support 2, the second gear 21 is arranged in the linkage 4 and is rotatably connected with the linkage 4, the first gear 13 is engaged with the second gear 21, the first gear 13 and the second gear 21 are configured to overturn the first support 2 to drive the linkage 4 to rotate; the first installation space 42 and the second installation space 43 are recessed on the same side of the linkage 4, the first installation space 42 is communicated with the second installation space 43, the first gear 13 and the second gear 21 are respectively arranged in the first installation space 42 and the second installation space 43; in order to prevent the linkage 4 from falling out of the installation slot 11, the screw is arranged on the first gear 13, the screw is arranged on the first gear 13 through the linkage 4; the shaft sleeve 8 is further sleeved on the screw, the shaft sleeve 8 is arranged beside the first gear 13 in the axial direction, the shaft sleeve 8 is in contact with the linkage 4, and is used for blocking the linkage 4 and avoiding metal friction to cause abnormal sound; the connecting rod 9 is arranged between the linkage 4 and the second support 3, both ends of the connecting rod 9 are rotatably connected with the linkage 4 and the second support 3 respectively; the connecting rod 9 is needed to realize the preset linkage between the linkage 4 and the second support 3; when the first support 2 is overturned, the first gear 13 and the second gear 21 are engaged, so that the first support 2 revolves around the first gear 13 while rotating, thereby driving the linkage 4 to rotate, and further driving the second support 3 to overturn, so as to realize the linkage and state switching of the first support 2 and the second support 3.

Claims

1. A state-maintaining mechanism for a foot rest device, characterized in that: The system includes a main support component, a first support component, a second support component, a linkage component, and a telescopic assembly. The linkage component and the second support component are rotatably connected to the main support component, and the first support component is rotatably connected to the linkage component. The linkage component is configured to link the first support component and the second support component. The telescopic assembly is rotatably connected to the linkage component and the main support component at both ends, and an elastic element is provided inside the telescopic assembly. The elastic element is configured to provide support force to the linkage component. The first support component and the second support component have an extended state and a retracted state. In the retracted state, the first support component and the second support component are located below the main support component. In the extended state, the first support component and the second support component are laid side by side. In both the extended and retracted states, the telescopic assembly provides support force to the linkage component to maintain its state.

2. The state-maintaining mechanism of the foot rest device according to claim 1, characterized in that: The telescopic assembly includes a sliding rotating seat and a retaining member. The sliding rotating seat is provided with a rotating shaft and is rotatably connected to the main support member through the rotating shaft. The retaining member is inserted into the sliding rotating seat, and the head of the retaining member is rotatably connected to the linkage member.

3. The state-maintaining mechanism of the foot rest device according to claim 2, characterized in that: The retainer includes a main body, which is fixedly connected to the head. The main body is inserted into a sliding rotating seat, and a groove is provided on the main body, into which the rotating shaft is inserted.

4. The state-maintaining mechanism of the foot rest device according to claim 2, characterized in that: Both the head of the retainer and the sliding rotating seat are provided with blocking protrusions to increase the contact area with the elastic element.

5. The state-maintaining mechanism of the foot rest device according to claim 1, characterized in that: The main support component has an installation groove, and the linkage component is installed in the installation groove; the main support component also has a clearance groove, which is connected to the installation groove, and the telescopic component is rotatably installed in the clearance groove.

6. The state-maintaining mechanism of the foot rest device according to claim 5, characterized in that: The linkage component has a receiving groove, which is connected to the mounting groove and the clearance groove. The telescopic component is rotatably installed in the mounting groove.

7. The state-maintaining mechanism of the foot rest device according to claim 6, characterized in that: The main support member is provided with a first gear, which is located in the linkage member and rotatably connected to the linkage member. The first support member is provided with a second gear, which is located in the linkage member and rotatably connected to the linkage member. The first gear and the second gear mesh with each other. The first gear and the second gear are configured such that the first support member flips and drives the linkage member to rotate.

8. The state-maintaining mechanism of the foot rest device according to claim 1, characterized in that: The rotatable connection points of the telescopic component and the first support member on the linkage member are located on both sides of the rotation points of the linkage member and the main support member, respectively. In the retracted state, the first support member is located below the linkage member, and the telescopic component provides the linkage member with an upward and forward supporting force. In the extended state, the first support member is located above the linkage member, and the telescopic component provides the linkage member with a downward and forward supporting force.

9. The state-maintaining mechanism of the foot rest device according to claim 1, characterized in that: A connecting rod is provided between the linkage component and the second support component, and the two ends of the connecting rod are rotatably connected to the linkage component and the second support component, respectively.

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