CN202425998U - Chair armrest - Google Patents

Abstract

The utility model relates to a foot supporting device of a chair, which is characterized in that a positioning supporting arm capable of swinging is fixed at the front end of a cushion of the chair, a foot supporting frame which can adjust the front and back position positioning and is provided with a supporting surface is arranged on the supporting arm, the upper end of the supporting arm is pivoted between two pivoting seats which can be fixed on the cushion, and a ratchet part is arranged on the pivoting seat at one side, so that the ratchet seat which is elastically pushed and also provided with the ratchet part is mutually meshed with the ratchet seat arranged in the upper end of the supporting arm; therefore, through the rotating and swinging positioning between the supporting arm and the pivoting seat, the foot supporting frame can be folded under the cushion or can be extended forwards before the cushion after being overturned upwards and positioned, and then the foot supporting frame is pushed outwards, so that the supporting surface of the foot supporting frame can be used for the legs of the rider to extend and bear, and meanwhile, the operation of the foot supporting device is simpler and easier.

Description

Chair armrest

technical field

The utility model relates to a footrest unit arranged under the front end of the seat cushion of a chair, so that the footrest unit can be turned upwards from the bottom of the seat cushion and then positioned, and the footrest frame set on it can be pushed outward out, allowing the occupant's legs to be comfortably stretched and supported by the footrest unit.

Background technique

In addition to the back of the general office chair for the back of the occupant to lean back and the armrests for the arms to support, the occupant's legs have no possibility of thinking about their comfort needs, but in other such as: massage chairs, leisure chairs, etc. There is already a device with this function on the chair or sofa chair. Therefore, in order to make the office chair have the same function as the armrest, it is a utility model patent like the announcement No. M399663 "seat seat folding tripod". (the same case also has an application for a utility model patent in China, and its application number is CN201020544789), its main structure is to include: two rotating arms and a bearing surface hinged between the two rotating arms, two rotating arms Hinged with the seat plate of the chair and matched with the seat plate of the seat, the feet can be comfortably stretched on the bearing surface, which can promote blood circulation and relieve the fatigue of the feet, and can be applied to all heights, leg shapes, and leg lengths. people use.

However, since the two swivel arms can only provide the occupant's feet after turning upward and horizontally, and then extending the load-bearing surface outward, if the occupant only wants to stretch downward slightly, it will Such a function is not provided; in addition, because the bearing surface is hinged at the ends of the two rotating arms, and the width of the two rotating arms is almost in line with the width of the seat cushion, so when the occupant uses the bearing surface, the two feet must be turned outward. Only when the two rotating arms are opened, can the two rotating arms be turned upwards and outwards, and the bearing surface must be turned outwards before use. The occupant must first put his feet on the ground and sit up, then reach out and turn the load-bearing surface back inward. However, since the load-bearing surface is far away from the occupant after being turned outward, it may cause difficulties and inconvenience for the occupant to operate. The rider will try to use the instep to turn the load-bearing surface back inward, but the design has no corresponding structure or device, which also leads to operational difficulties.

Utility model content

In order to improve the inconvenience in operation of the aforementioned existing foot support device, the utility model provides a support arm which is locked at the front lower end of the seat cushion and can be positioned by swinging up and down, and makes the support arm and a support surface on it The armrest frame is fitted together, and the armrest frame can be slid along the support arm to extend or retract for positioning, thereby making the operation of the armrest frame swing, push, extend or retract easier.

The technical solution adopted by the utility model to solve the technical problem is: it includes a support arm pivoted on an adjustment and positioning seating unit, which can be swiveled up and down for positioning and fitted with a support leg frame, wherein the adjustment and positioning seating The unit also includes that the pivotal part at the upper end of the support arm is set between the left and right pivotal seats, and a screw rod is set to pass through the right pivotal seat and the pivotal part, and then passed through a screw that is accommodated in the pivotal seat. There is a ratchet seat in the pivot part that is elastically pushed outward and has a ratchet part at its outer end. At the same time, a ratchet part that can engage with the ratchet seat is provided on the corresponding left pivot seat, so that the screw rod can pass through the The left pivot seat is screwed behind; in addition, positioning recesses are respectively provided on the inner side between the two ends of the support arm, and the armrest frame is provided with a sliding channel for the support arm to wear, and in the sliding channel Between the support arm and the supporting arm, there is a positioning element that is pushed by elastic force and can fit into the corresponding positioning recess.

In the above solution, the two pivot seats are combined on the left and right sides of a fixed seat.

In the above scheme, the outer end of the pivot seat on the left side is provided with a button with a plurality of supporting feet, which is elastically pushed outward, and makes the plurality of supporting feet pass through the pivot seat to abut against the ratchet joint. The end face of the seat so that it can be pushed against.

In the above solution, the inner side of the pivot seat on the right side is provided with a limiting groove with a predetermined angle, and the corresponding part of the pivot part of the support arm is protruded with a stopper that can move in the limiting groove .

The beneficial effect of the utility model is that, through the above-mentioned leg support device locked at the front end of the seat cushion of the office chair, the support arm frame can be folded and stored under the seat cushion through the swivel positioning of the support arm, Or stretched in front of the seat cushion for the occupant's legs to be raised and stretched for storage. At the same time, the push-out or retraction of the footrest frame not only allows the occupant to operate easily, but even only needs to push or hook back the feet. It can be completed, so the operability of the footrest device is more in line with the needs of practical applications.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic diagram of the utility model foot support device installed on an office chair.

Fig. 2 is a perspective exploded schematic view of the front of the footrest device of the present invention.

Fig. 3 is a three-dimensional exploded schematic view of the rear side of the footrest device of the present invention.

Fig. 4 is a cross-sectional view of the adjustment, positioning and seating unit of the footrest device of the present invention.

Fig. 5 is a cross-sectional view between the support arm and the foot support frame of the foot support device of the present invention.

Fig. 6 is a schematic diagram of the utility model of the footrest device folded under the seat cushion of the office chair.

Fig. 7 is a schematic diagram of the use of the foot support device of the utility model when it is turned upwards and then stretched.

In the figure: S. foot support device, 1. adjustment and positioning seating unit, 10. fixed seat, 11a, 11b. pivot seat, 110. convex part, 111. limit groove, 112. slotted hole, 113. Ratchet part, 12. spring, 13. ratchet seat, 131. anti-rotation part, 132. ratchet part, 14. nut, 15. button, 151. top foot, 16. spring, 17. screw rod, 2. Support arm, 20. Pivot part, 21. Recessed part, 22. Positioning recessed part, 23. Resisting part, 24. Recessed part, 3. Armrest frame, 31. Sliding joint, 32. Back cover seat, 33. Positioning element, 34. Spring.

Detailed ways

Please refer to Fig. 1, the foot support device S of the utility model is installed below the front end of the seat cushion of the office chair, and it mainly includes an adjustment and positioning seat setting unit 1 that can be locked on the seat cushion, and the adjustment and positioning seat setting unit 1 A support arm 2 that can be flipped and positioned is pivotally arranged on the unit 1, and then the support arm 2 is inserted into a footrest frame 3 with a support surface on it; please refer to Fig. 2, Fig. 3 and Fig. 4 again As shown, the adjustment and positioning seating unit 1 includes a fixed seat 10 that can be combined with the seat cushion, and left and right pivot seats 11a, 11b are respectively combined on both sides of the fixed seat 10, and the support The pivotal part 20 provided at the upper end of the arm 2 is pivotally connected between the two pivotal seats 11a, 11b. At the same time, the inner end of the right pivotal seat 11b is protrudingly provided with a predetermined angle. The convex portion 110 of the limit groove 111 in the range, and the corresponding end surface of the pivot portion 20 of the support arm 2 is provided with a concave portion 24 for accommodating the convex portion 110, and a concave portion 24 is convexly provided on the concave portion 24. Into the stopper 23 in the limit groove 111, so that the angle of the support arm 2 can be flipped and swung within a predetermined range; in addition, a screw 17 is provided to pass through the pivotal seat 11b and the pivotal part 20 at the same time. Afterwards, after passing through a spring 12 and a ratchet seat 13 in sequence, pass through another pivot seat 11a to lock and combine with a nut 14, and make one end of the ratchet seat 13 be provided with a polygonal The anti-rotation part 131 is consistent with the polygonal recessed part 21 provided at the corresponding position of the pivot part 20 to pass through each other. At the same time, the spring 12 is also just accommodated in the recessed part 21, so that the ratchet seat 13 produces outward The effect of elastic thrusting, and make the other end of this ratchet seat 13 be provided with ratchet part 132 again, make it can mutually with the corresponding ratchet part 113 that is set in the recess on the left side pivot seat 11a. Engage together; Secondly, the outer end of this pivotal seat 11a is provided with button 15, and makes this button 15 upper rings be provided with a plurality of top pins 151, so that each top pin 151 can pass through all the pins on this pivotal seat 11a Each provided perforation hole 112 is then fastened, and at the same time, the end of each top foot 151 is resisted against the end face of the ratchet seat 13, and then a spring 16 is installed between the button 15 and the pivot seat 11a, Let the spring 16 elastically push the button 15 outward, that is, when the button 15 is pressed, the ratchet seat 13 is pushed through its top foot 151, so that the ratchet portion 132 of the ratchet seat 13 is retracted. The meshing state of the ratchet portion 113 of the pivot seat 11a allows the support arm 2 to turn over; on the contrary, when the pressing force on the button 15 is released, the ratchet seat 13 and the button 15 will be The elastic force of the spring 12 and the spring 16 pushes back, so that the button 15 is returned to the original position, and the ratchet parts 132, 113 of the ratchet seat 13 and the pivotal seat 11a are kept engaged again, that is, the support arm 2. Position it after flipping to a predetermined angle.

In addition, as shown in FIG. 5, the inner side of the support arm 2 is recessed with a plurality of positioning recesses 22, so that the support arm 2 can be inserted into the sliding channel 31 provided on the armrest frame 3, and A back cover seat 32 which is a part of the sliding track 31 is fixed at the notch at the upper end of the sliding track 31, and then a positioning seat pushed by a spring 34 is accommodated between the back cover seat 32 and the support arm 2. Element 33, and the positioning element 33 is elastically forced into the corresponding recess 22 to fit, so that the armrest frame 3 can slide back and forth along the support arm 2, and through the two ends of the support arm 2 The setting of the concave portion 22 allows the footrest frame 3 to be positioned when it slides out or retracts back.

Therefore, as shown in FIG. 6, when the footrest device S is not in use, it is turned down and folded under the seat cushion. When it is intended to be used, as shown in FIG. After the upward flipping and positioning, the footrest frame 3 is turned from the bottom of the seat cushion to the front of the seat cushion, and then the footrest frame 3 is pushed out along the support arm 2 to position, so that the footrest frame 3 is in the position Therefore, the operation of the entire foot support device S is not only simple and easy, but also the extension or retraction of the support foot frame 3 can be achieved by pushing or hooking back the feet of the occupant. Easy to achieve, making the operation easier for the passengers.

Claims (4)

1. A chair footrest device, which is characterized in that it includes a support arm that can be swiveled up and down for positioning on an adjustment and positioning sitting unit, and a support foot that can slide forward and backward for positioning is worn on the support arm frame, where: The adjustment and positioning seating unit includes the pivotal connection between the left and right pivotal seats and the pivotal part at the upper end of a support arm, and a screw rod passes through the right pivotal seat and the pivotal part, and then passes through Slip through a ratchet seat that is accommodated in the pivotal part and is elastically pushed outward, and its outer end has a ratchet part that can move left and right in the axial direction, and a ratchet seat is provided on the corresponding left pivot seat. The ratchet part of the ratchet part meshes with the ratchet part of the seat, and then the screw rod passes through the left pivot seat and is screwed; in addition, the inner sides of the two ends of the support arm are respectively provided with positioning recesses; The armrest frame is provided with a sliding track for the support arm to fit on it, and between the sliding track and the support arm is provided a positioning seat that is pushed by a spring and can be elastically fitted in the corresponding positioning recess. element. 2. The chair footrest device according to claim 1, wherein the two pivot seats are combined with two sides of a fixed seat. 3. The chair footrest device according to claim 1, characterized in that: the outer end of the left pivot seat is provided with a plurality of push-leg buttons that are elastically pushed outwards, and the buttons After passing through the pivotal seat, a plurality of top legs abut against the end surface of the ratchet seat, so that the ratchet parts originally engaged between the pivotal seat and the ratchet seat are separated by pressing the button. 4. The chair footrest device according to claim 1, characterized in that: the inner side of the pivot seat on the right side is provided with a limit groove with a predetermined angle, and the corresponding part of the pivot part of the support arm is The protrusion is provided with a stop part capable of moving in the limiting groove.

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