Armrest joint folding structure

Abstract

The utility model relates to the technical field of articles for daily use, in particular to an armrest joint folding structure, which is characterized in that armrest pipes are arranged on two sides of an armrest base, the armrest pipes are hinged to rotating gears through transmission sheets, the two rotating gears are meshed with each other, the rotating gears are hinged in an armrest button through rotating shafts, and a sliding rail is arranged on each rotating gear. The sliding rod penetrates through an inclined groove of the armrest button and a sliding rail of the rotating gear, the armrest button is provided with a longitudinal sliding groove, a longitudinal sliding rod penetrates through the longitudinal sliding groove, and the return spring is arranged between the armrest button and the armrest base. The folding handrail has the advantages that the handrail button is pressed to drive the sliding rod to be separated from the gear and the gear unlocking joint at the same time, and the two handrail pipes are folded; during unfolding, when the armrest pipe set is pulled open in place, the sliding rod is automatically clamped, and the two rotating gears are in gear transmission to achieve a folding synchronization function; the problem of single-side clamping of the armrest is solved, folding and unfolding are synchronous, and very good experience is brought to a user; the structure design is more reasonable, and the folding mode is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, and more specifically, particularly to an armrest joint folding structure. Background Art

[0002] A handrail refers to a horizontal bar or handle used to maintain body balance and support the body. Handrails are widely used in daily life, such as handrails on stairs, baby strollers, railings, subways, etc. Most handrails are fixed and do not need to be folded, but some handrails need to be folded, such as the handrails on some baby strollers. After folding the handrails, the baby strollers are convenient for storage and carrying. The existing handrail structures on the market are basically unable to be folded synchronously, and there is a one-sided locking problem, which is very inconvenient for consumers to use, and requires repeated unlocking operations to reach the folded state.

[0003] In view of the above-mentioned deficiencies in the folding structure of the armrest joint, the applicant adheres to the spirit of research innovation and excellence, combines production practice, and uses professional and scientific methods to propose a practical solution, and therefore files this application. Utility Model Content

[0004] The utility model aims to provide a handrail joint folding structure in view of the existing technical status, which can complete the folding of two handrail tubes by pressing a button.

[0005] A handrail joint folding structure comprises: an handrail tube, an handrail button, a return spring, a rotating gear, a transmission plate and an handrail base, wherein the handrail tube is arranged on both sides of the handrail base, the handrail tube is hinged to the rotating gear through the transmission plate, the two rotating gears are meshed with each other, the rotating gear is hinged to the handrail button through a rotating shaft, a sliding rail is arranged on the rotating gear, a sliding rod passes through the oblique groove of the handrail button and the sliding rail of the rotating gear, the handrail button is provided with a longitudinal sliding groove, a longitudinal sliding rod passes through the longitudinal sliding groove, and the return spring is arranged between the handrail button and the handrail base.

[0006] Specifically, reinforcing iron sheets are inserted into the left and right sides of the connection between the handrail tube and the handrail button. One end of the reinforcing iron sheet is fixed to the handrail tube by bolts, and the other end of the reinforcing iron sheet is hinged to the transmission sheet.

[0007] Specifically, the rotating gear is distributed at the left and right ends of the handrail button, a circular hole on the rotating gear is hinged to the transmission plate through a rotating shaft, and the transmission plate is located on the inner side of the slotted end of the handrail tube.

[0008] Specifically, the slide rails of the rotating gear are divided into arc slide rails and oblique slide rails, the oblique slide rail is located at one end of the arc slide rail, and the sliding rod moves along the arc slide rail and the oblique slide rail.

[0009] Specifically, the left and right sides of the armrest base are provided with gaps for the armrest tube to swing, and the middle of the armrest button is provided with a slot for installing a rotating gear.

[0010] Specifically, a convex column is provided on the top of the armrest button, and one end of the return spring is sleeved on the convex column, so that the return spring can be initially positioned.

[0011] The beneficial effects of the utility model are as follows: pressing the armrest button drives the sliding rod to disengage the gear and the gear unlocking joint at the same time, and the two armrest tubes are folded together; when the armrest tube group is pulled into place during unfolding, the sliding rod is automatically engaged, and the two rotating gears are gear transmission to achieve the folding and closing synchronization function; the problem of unilateral engagement of the armrest is solved, and folding and opening are achieved synchronously, which brings a very good experience to the user; its structural design is more reasonable, and the folding method is also more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a three-dimensional diagram of the utility model;

[0013] Attached Figure 2 It is a partial diagram of the unfolded handrail of the utility model;

[0014] Attached Figure 3 This is a partial view of the folded armrest of the utility model.

[0015] Description and marking: handrail tube 1, handrail button 2, return spring 3, rotating gear 4, transmission plate 5, handrail base 6, reinforcing iron sheet 7, longitudinal slide groove 8, inclined groove 9, slide rail 10, sliding rod 11, longitudinal slide rod 12. DETAILED DESCRIPTION

[0016] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0017] See also Figures 1 to 3As shown, a handrail joint folding structure includes: a handrail tube, a handrail button, a return spring, a rotating gear, a transmission plate and a handrail base, wherein the handrail tube is arranged on both sides of the handrail base, the handrail tube is hinged to the rotating gear through the transmission plate, the two rotating gears are meshed with each other, the rotating gear is hinged to the handrail button through a rotating shaft, a sliding rail is arranged on the rotating gear, a sliding rod passes through the inclined groove of the handrail button and the sliding rail of the rotating gear, the handrail button is provided with a longitudinal sliding groove, a longitudinal sliding rod passes through the longitudinal sliding groove, and the return spring is arranged between the handrail button and the handrail base. Reinforcement iron sheets are inserted into the left and right sides of the connection between the handrail tube and the handrail button, one end of the reinforcement iron sheet is fixed to the handrail tube by bolts, and the other end of the reinforcement iron sheet is hinged to the transmission plate.

[0018] In the above scheme, the rotating gear is distributed at the left and right ends of the handrail button, a circular hole on the rotating gear is hinged to the transmission plate through a rotating shaft, and the transmission plate is located inside the slotted end of the handrail tube. The sliding rail of the rotating gear is divided into an arc sliding rail and an oblique sliding rail, the oblique sliding rail is located at one end of the arc sliding rail, and the sliding rod moves along the arc sliding rail and the oblique sliding rail.

[0019] In the above scheme, the left and right sides of the armrest base are provided with gaps for the swing of the armrest tube, and the middle of the armrest button is provided with a slot for installing a rotating gear. The top of the armrest button is provided with a convex column, one end of the return spring is sleeved on the convex column, and the other end of the return spring is pressed against the top of the inner side of the armrest base.

[0020] Installation steps: 1. For the handrail tube assembly, insert the reinforcing iron sheets on the left and right sides of the handrail tube respectively, align the holes, and connect them with rivets or bolts; install two transmission plates on the inner side of the slotted end of the handrail tube, and insert the connecting pins into the reinforcing iron sheet, handrail tube, and one end of the two transmission plates in turn to fix them, and install the rotating gear on the other end of the transmission plate and connect them with rivets; 2. Insert the return spring on the upper end of the handrail button on the handrail base, install it into the handrail base, align the holes, and connect them with screws; 3. Install the left and right handrail tubes into the handrail base assembly and lock them with screws.

[0021] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. An armrest joint folding structure, comprising: An armrest tube, an armrest button, a return spring, a rotating gear, a transmission plate and an armrest base, characterized in that: the armrest tube is arranged on both sides of the armrest base, the armrest tube is hinged to the rotating gear through a transmission plate, the two rotating gears are meshed with each other, the rotating gear is hinged to the armrest button through a rotating shaft, a slide rail is provided on the rotating gear, a sliding rod passes through the oblique groove of the armrest button and the slide rail of the rotating gear, the armrest button is provided with a longitudinal slide groove, a longitudinal slide rod passes through the longitudinal slide groove, and a return spring is arranged between the armrest button and the armrest base.

2. The armrest joint folding structure according to claim 1, characterized in that: The left and right sides of the connection between the handrail tube and the handrail button are both sleeved with reinforcing iron sheets, one end of the reinforcing iron sheet is fixed to the handrail tube by bolts, and the other end of the reinforcing iron sheet is hinged to the transmission sheet.

3. The armrest joint folding structure according to claim 2, characterized in that: The rotating gear is distributed at the left and right ends of the handrail button, a circular hole on the rotating gear is hinged to a transmission plate through a rotating shaft, and the transmission plate is located at the inner side of the slotted end of the handrail tube.

4. The armrest joint folding structure according to claim 3, characterized in that: The slide rails of the rotating gear are divided into arc slide rails and oblique slide rails. The oblique slide rail is located at one end of the arc slide rail, and the sliding rod moves along the arc slide rail and the oblique slide rail.

5. The armrest joint folding structure according to claim 1 or 4, characterized in that: The left and right sides of the handrail base are provided with gaps for the handrail tube to swing, and the middle of the handrail button is provided with a groove for installing a rotating gear.

6. The armrest joint folding structure according to claim 5, characterized in that: A convex column is arranged on the top of the handrail button, one end of the return spring is sleeved on the convex column, and the other end of the return spring is pressed against the top of the inner side of the handrail base.

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