Seat lifting armrest

Abstract

The utility model discloses a seat lifting armrest, relates to seat armrest technical field, seat lifting armrest includes armrest body, fixed seat, lift seat and locking subassembly, fixed seat and seat are fixedly connected, fixed seat is provided with a plurality of gear position hole along up and down direction interval arrangement, lift seat and armrest body are fixedly connected, the locking subassembly is provided with a plurality of gear position hole, lift seat and armrest body are fixedly connected. The locking assembly comprises a movable frame, a locking block, a connecting shaft, an elastic piece and a lifting handle, the elastic piece is used for providing reset force for the locking block so that the locking block can be kept clamped with the gear hole, the locking function is achieved, the height position of the armrest body can be locked, and the lifting handle can be lifted up and down. When the lifting handle is pulled upwards, the lifting handle drives the moving frame to move upwards relative to the connecting shaft, the moving frame drives the connecting shaft to move in the horizontal direction through the limiting groove, and the connecting shaft drives the locking block to be separated from the gear hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair handrail technical field, especially a kind of chair lifting handrail. BACKGROUND

[0002] At present, chair is arranged with adjustable lifting handrail, and the existing lifting handrail is mostly realized lifting adjustment by cooperating with the wave-shaped arc-shaped groove of clamping block, and the clamping block is connected with spring, and spring provides elastic force to clamping block, so that clamping block is tightly closed to arc-shaped groove, one position of clamping block and arc-shaped groove is fixed, and the other can be moved up and down, in the process of moving up and down lifting handrail, clamping block will compress spring, so that clamping block can move along arc-shaped groove. The disadvantage of this lifting handrail is that it cannot lock clamping block, when the force applied on lifting handrail is larger, arc-shaped groove extrudes clamping block and compresses spring, and lifting handrail will fall down, and cannot be kept at original height position. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in prior art. For this purpose, the utility model provides a kind of chair lifting handrail, with locking function, the height position of handrail body can be locked, to improve the use experience.

[0004] According to the chair lifting handrail of the utility model embodiment, including:

[0005] Handrail body;

[0006] Fixed seat, with chair fixed connection, and fixed seat is equipped with multiple interval arrangement's gear hole along up-down direction;

[0007] Lifting seat, with the fixed connection of handrail body, and with the up-down sliding connection of fixed seat, and the lifting seat is equipped with the limit hole extending along horizontal direction;

[0008] Locking assembly, including moving frame, locking block, connecting shaft, elastic member and handle, the moving frame is slidably connected with the lifting seat, the handle is connected with the moving frame, the connecting shaft is horizontally arranged and is arranged in the limit hole, the locking block, the moving frame is equipped with limit slot, the limit slot includes inclined surface, the lower side of the connecting shaft is in contact with the inclined surface, and the elastic member is used to provide reset force to the locking block, so that the locking block remains with the clamping of gear hole;

[0009] When the handle is pulled upward, the handle drives the moving frame to move upward relative to the connecting shaft, the moving frame drives the connecting shaft to move along horizontal direction through the limit slot, and the connecting shaft drives the locking block to disengage from the gear hole.

[0010] The seat lifting handrail has at least the following beneficial effects: the height position locking function of the handrail body is realized through arrangement of the locking assembly; when the height position of the handrail body needs to be adjusted, the user first pulls up the handle, the handle drives the moving frame to move upwards relative to the connecting shaft, the inclined surface moves upwards and drives the connecting shaft to move in the horizontal direction, the limiting hole limits the connecting shaft to move only in the horizontal direction, the connecting shaft moves in the horizontal direction and drives the locking block to disengage from the gear hole, at this time, the lifting seat can move up and down relative to the fixed seat, the user releases the handle after adjusting the height position of the handrail body, at this time, the locking block is clamped with the gear hole of the corresponding height position under the reset force of the elastic element, so that the height of the lifting seat is locked, even if the handrail body bears a large weight, it will not fall down, and the use experience can be improved.

[0011] According to some embodiments of the utility model, the fixed seat is sleeved on the outer periphery of the lifting seat, the lifting seat is provided with an inner cavity, the moving frame is located in the inner cavity, the outer wall of the lifting seat is provided with an avoiding opening which is in communication with the inner cavity, the avoiding opening faces the gear hole, and the locking block is arranged in the avoiding opening.

[0012] According to some embodiments of the utility model, the inner wall of the lifting seat is provided with a sliding block extending in the up-down direction, the moving frame is provided with a sliding groove, and the sliding groove is in sliding connection with the sliding block.

[0013] According to some embodiments of the utility model, the sliding block is provided with a groove extending in the horizontal direction, the groove is in communication with the avoiding opening, the locking block is matched with the groove to limit the rotation of the locking block around the connecting shaft.

[0014] According to some embodiments of the utility model, the locking block is provided with a limiting column, the elastic element is a spring, the spring is sleeved on the outer periphery of the limiting column, one end of the spring is in abutment with the locking block, and the other end of the spring is in abutment with the inner wall of the lifting seat.

[0015] According to some embodiments of the utility model, the limiting groove comprises a circular arc surface and a plane arranged in the horizontal direction, the inclined surface is located below the plane, the circular arc surface connects the inclined surface and the plane, and the connecting shaft is matched with the circular arc surface.

[0016] According to some embodiments of the utility model, the moving frame is provided with reinforcing ribs arranged in a longitudinal and transverse staggered mode.

[0017] According to some embodiments of the utility model, the handrail body is connected to the upper end of the lifting seat, the handle is located below the handrail body, the upper end of the handle is provided with a boss, and the lower end of the handrail body is provided with a positioning groove, when the handle is pulled upwards, the boss is inserted into the positioning groove.

[0018] According to some embodiments of the present application, the number of the limiting grooves is two, the two limiting grooves are respectively arranged on opposite sides of the moving frame, one end of the connecting shaft is matched with one of the limiting grooves, and the other end of the connecting shaft is matched with the other limiting groove.

[0019] According to some embodiments of the present application, the fixed seat is further provided with an initial position hole, the initial position hole extends along the up-down direction, the length of the initial position hole along the up-down direction is greater than the length of the gear hole along the up-down direction, and the initial position hole is located below all the gear holes.

[0020] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in combination with the drawings and embodiments, wherein:

[0022] Figure 1 Structure diagram of the seat lifting handrail according to some embodiments of the present application;

[0023] Figure 2 Exploded view of the seat lifting handrail according to some embodiments of the present application;

[0024] Figure 3 Exploded view of the handrail body, fixed seat, lifting seat and locking assembly of the seat lifting handrail according to some embodiments of the present application;

[0025] Figure 4 Structure diagram of the locking assembly of the seat lifting handrail according to some embodiments of the present application; Figure 3 Enlarged view of A in FIG.

[0026] Figure 5 Structure diagram of the locking assembly of the seat lifting handrail according to some embodiments of the present application;

[0027] Figure 6 Structure diagram of the locking assembly of the seat lifting handrail according to some embodiments of the present application;

[0028] Figure 7 Sectional view of the seat lifting handrail according to some embodiments of the present application;

[0029] Figure 8 Sectional view of the seat lifting handrail according to some embodiments of the present application; Figure 7 Enlarged view of B in FIG.

[0030] Figure 9 Sectional view of the seat lifting handrail according to some embodiments of the present application;

[0031] Figure 10 For Figure 9 Enlarged view at C.

[0032] Reference signs:

[0033] Seat lifting armrest 1000;

[0034] Armrest body 100, positioning groove 110;

[0035] Fixed seat 200, gear hole 210, initial position hole 220;

[0036] Lifting seat 300, limiting hole 310, avoiding opening 320, sliding block 330, groove 331;

[0037] Locking assembly 400, moving frame 410, limiting groove 411, inclined surface 4111, flat surface 4112, circular arc surface 4113, clamping hole 412, reinforcing rib 413, sliding groove 414, locking block 420, limiting column 421, connecting shaft 430, elastic member 440, handle 450, boss 451;

[0038] Fixed frame 500. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0040] Referring to Figure 1 As shown in the drawings, the seat lifting armrest 1000 provided by the present application comprises an armrest body 100, a fixed frame 500 and a lifting seat 300. The armrest body 100 is fixedly connected to the upper end of the lifting seat 300, the lifting seat 300 is slidingly connected to the fixed frame 500 in an up-down direction, and the fixed frame 500 is fixedly connected to the seat.

[0041] Referring to Figure 2 As shown in the drawings, the seat lifting armrest 1000 further comprises a fixed seat 200, which is fixed in the fixed frame 500. The fixed seat 200 is equivalent to being fixedly connected to the seat, and the fixed seat 200 is provided with a plurality of gear holes 210 arranged in an up-down direction. The gear holes 210 are used to lock the height position of the armrest body 100.

[0042] Referring to Figure 3As shown, the seat lifting handrail 1000 further comprises a locking assembly 400, which is mainly used to cooperate with the gear hole 210 to lock the height position of the handrail body 100. The locking assembly 400 comprises a moving frame 410, a locking block 420, a connecting shaft 430 and a handle 450. The moving frame 410 is connected with the lifting seat 300 in a sliding manner, the handle 450 is connected with the moving frame 410, the handle 450 can drive the moving frame 410 to move up and down relative to the lifting seat 300, the connecting shaft 430 is arranged horizontally, and the connecting shaft 430 is arranged through the locking block 420, so that the connecting shaft 430 and the locking block 420 form an integral whole and move together. Referring to Figure 4 As shown, the lifting seat 300 is provided with a limiting hole 310 extending in the horizontal direction, and the connecting shaft 430 is arranged through the limiting hole 310, so that the connecting shaft 430 can only move transversely relative to the lifting seat 300. Referring to Figure 5 and Figure 6 As shown, the moving frame 410 is provided with a limiting groove 411, and the limiting groove 411 comprises an inclined surface 4111. The lower side of the connecting shaft 430 abuts against the inclined surface 4111. When the inclined surface 4111 moves upward, the inclined surface 4111 will push the connecting shaft 430 to move in the horizontal direction. Referring to Figure 3 As shown, the locking assembly 400 further comprises a resilient member 440, which is used to provide a restoring force to the locking block 420, so that the locking block 420 remains clamped with one of the gear holes 210. Of course, the locking block 420 can also compress the resilient member 440, so as to be separated from the gear hole 210.

[0043] The working principle is explained as follows. When it is needed to adjust the height position of the handrail body 100, referring to Figure 7 As shown, the user first pulls the handle 450 upward, and the handle 450 drives the moving frame 410 to move upward relative to the connecting shaft 430. When the inclined surface 4111 moves upward, it will drive the connecting shaft 430 to move in the horizontal direction. The limiting hole 310 limits the connecting shaft 430 to move only in the horizontal direction. When the connecting shaft 430 moves in the horizontal direction, it will drive the locking block 420 to be separated from the gear hole 210. At this time, the lifting seat 300 can move up and down relative to the fixed seat 200. After the user adjusts the height position of the handrail body 100, the handle 450 is released. At this time, under the action of the restoring force of the resilient member 440, the locking block 420 and the connecting shaft 430 move together in the horizontal direction to return to the initial position. At the same time, the connecting shaft 430 drives the inclined surface 4111 to move, and finally drives the handle 450 to reset downward. The locking block 420 is clamped with the gear hole 210 corresponding to the height position, so as to lock the height of the lifting seat 300. Even if the handrail body 100 bears a large weight, it will not fall downward, which can improve the use experience.

[0044] In addition, the inclined surface 4111 is arranged to contact the connecting shaft 430 to form linear contact, the contact area is small, the friction is small, and the handle 450 is used to control the unlocking of the locking block 420, which is labor-saving.

[0045] Referring to Figures 2 to 4 In some embodiments, the fixing seat 200 is sleeved on the outer periphery of the lifting seat 300, the lifting seat 300 is provided with an inner cavity, the moving frame 410 is located in the inner cavity, most of the parts of the locking assembly 400 are located in the inner cavity of the lifting seat 300, the occupied space can be reduced, the volume of the whole structure is small, the outer wall of the lifting seat 300 is provided with an avoiding opening 320 which is in communication with the inner cavity, the avoiding opening 320 is arranged to face the gear hole 210, and the locking block 420 is arranged to pass through the avoiding opening 320, so that the locking block 420 can be clamped with the gear hole 210.

[0046] Referring to Figure 9 and Figure 10 In some embodiments, the inner wall of the lifting seat 300 is provided with a sliding block 330 extending in the up-down direction, and the moving frame 410 is provided with a sliding groove 414 which is in sliding connection with the sliding block 330, so that the moving frame 410 can only move relative to the lifting seat 300 in the up-down direction, and the position of the moving frame 410 is prevented from deviating.

[0047] Referring to Figure 4 , Figure 9 and Figure 10 In some embodiments, the sliding block 330 is provided with a groove 331 extending in the horizontal direction, the groove 331 is in communication with the avoiding opening 320, the locking block 420 is matched with the groove 331, the locking block 420 can be limited to rotate around the connecting shaft 430, and the locking block 420 can only move out in the horizontal direction to avoid the avoiding opening 320 or move back into the inner cavity of the lifting seat 300, so that the position of the locking block 420 is prevented from deviating.

[0048] Referring to Figure 6 and Figure 10 In some embodiments, the locking block 420 is provided with a limiting column 421, the elastic member 440 is a spring, the spring is sleeved on the outer periphery of the limiting column 421, the limiting column 421 limits the spring, the spring is prevented from falling off the locking block 420, one end of the spring is in abutment with the locking block 420, and the other end of the spring is in abutment with the inner wall of the lifting seat 300.

[0049] Referring to Figure 7 and Figure 8As shown, in some embodiments, the limiting groove 411 comprises a circular arc surface 4113 and a horizontal plane 4112, the inclined surface 4111 is below the horizontal plane 4112, the circular arc surface 4113 connects the inclined surface 4111 and the horizontal plane 4112, and the connecting shaft 430 is matched with the circular arc surface 4113. The circular arc surface 4113 and the horizontal plane 4112 limit the connecting shaft 430.

[0050] Referring to Figure 5 As shown, in some embodiments, the moving frame 410 is provided with reinforcing ribs 413 arranged in a crisscross manner, which can enhance the structural strength of the moving frame 410.

[0051] Referring to Figure 5 and Figure 7 As shown, in some embodiments, the handrail body 100 is connected to the upper end of the lifting seat 300, and the handle 450 is below the handrail body 100. Such an arrangement can facilitate one-handed operation by the user. During operation, the user's thumb presses the lower end of the handle 450, and the user's other four fingers can press the upper end of the handrail body 100. When the user's hand is closed, the handle 450 can be lifted upward to achieve unlocking. At this time, the handrail body 100 can be moved up and down by one hand. After the user releases the thumb, the locking block 420 is automatically locked under the elastic force of the elastic member 440, so that the single-handed operation and lifting adjustment function can be achieved, and the use experience is good. The upper end of the handle 450 is provided with a boss 451, and the lower end of the handrail body 100 is provided with a positioning groove 110. When the user pulls the handle 450 upward, the boss 451 is inserted into the positioning groove 110, thereby limiting the handle 450.

[0052] Referring to Figure 10 As shown, in some embodiments, the number of limiting grooves 411 is two, and the two limiting grooves 411 are arranged on opposite sides of the moving frame 410. One end of the connecting shaft 430 is matched with one of the limiting grooves 411, and the other end of the connecting shaft 430 is matched with the other limiting groove 411. When the user pulls the handle 450 upward, the two inclined surfaces 4111 apply a moving force to the connecting shaft 430, the connecting shaft 430 is stressed more evenly, and the movement is smoother and not blocked.

[0053] Referring to Figure 10 As shown, in some embodiments, the fixing seat 200 is further provided with an initial position hole 220 extending in the up-down direction. The length of the initial position hole 220 in the up-down direction is greater than the length of the gear hole 210 in the up-down direction, and the initial position hole 220 is below all the gear holes 210. When the handrail body 100 is in the initial position, the locking block 420 is matched with the initial position hole 220. At this time, because the initial position hole 220 leaves a certain space, the handrail body 100 can move up and down for a distance, thereby reminding the user that the handrail body 100 has a lifting function.

[0054] In the description of the utility model, need understanding, if involving the direction description, for example the direction or position relation of indication such as upper, lower, front, back, left, right is based on the direction or position relation shown in the drawing, is only for facilitating the description of the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a particular orientation, is constructed and operated in a particular orientation, therefore can not be understood as a restriction on the utility model.

[0055] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number.If there is a description to the first, second is only used for distinguishing the purpose of technical features, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0056] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0057] The above embodiment of the utility model is described in detail in combination with the drawings, but the utility model is not limited to the above embodiment, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the utility model.

Claims

1. A seat lift armrest characterized by, The utility model relates to a handrail body, fixed seat, fixed seat is equipped with a plurality of interval arrangement along up and down direction gear hole, lifting seat, lifting seat is equipped with along horizontal direction extension limit hole, locking assembly, locking assembly includes moving frame, locking block, connecting shaft, elastic piece and handle, moving frame is equipped with limit slot, limit slot includes inclined plane, the downside of connecting shaft and inclined plane abut, elastic piece is used for providing reset force to locking block to make locking block keep with gear hole and connect, When the handle is pulled upward, the handle drives the moving frame to move upward relative to the connecting shaft, the moving frame drives the connecting shaft to move along the horizontal direction through the limit slot, and the connecting shaft drives the locking block to disengage from the gear hole. The fixed seat is sleeved on the outer periphery of the lifting seat, the lifting seat is provided with an inner cavity, the moving frame is located in the inner cavity, the outer wall of the lifting seat is provided with an avoiding opening in communication with the inner cavity, the avoiding opening faces the gear hole, and the locking block penetrates through the avoiding opening. The inner wall of the lifting seat is provided with a sliding block extending along the up and down direction, and the moving frame is provided with a sliding groove in sliding connection with the sliding block. The sliding block is provided with a groove extending along the horizontal direction, the groove is in communication with the avoiding opening, the locking block cooperates with the groove to limit the rotation of the locking block around the connecting shaft. The locking block is provided with a limiting column, the elastic piece is a spring, the spring is sleeved on the outer periphery of the limiting column, one end of the spring abuts against the locking block, and the other end of the spring abuts against the inner wall of the lifting seat.

2. The chair lift armrest of claim 1, wherein, The limit slot includes a circular arc surface and a horizontal plane, the inclined plane is located below the horizontal plane, the circular arc surface connects the inclined plane and the horizontal plane, and the connecting shaft cooperates with the circular arc surface.

3. The chair lift armrest of claim 2, wherein, The moving frame is provided with reinforcing ribs arranged in a longitudinal and transverse manner.

4. The chair lift armrest of claim 3, wherein, The handle is located below the handrail body, the upper end of the handle is provided with a boss, and the lower end of the handrail body is provided with a positioning groove.

5. The chair lift armrest of claim 1, wherein, The number of limit slots is two, the two limit slots are respectively arranged on opposite sides of the moving frame, one end of the connecting shaft cooperates with one of the limit slots, and the other end of the connecting shaft cooperates with the other limit slot.

6. The chair lift armrest of claim 1, wherein, The fixed seat is also provided with an initial position hole extending along the up and down direction, the length of the initial position hole along the up and down direction is greater than the length of the gear hole along the up and down direction, and the initial position hole is located below all the gear holes.

7. The chair lift armrest of claim 1, wherein, ​ 8. The chair lift armrest of claim 1, wherein, ​ 9. The chair lift armrest of claim 1, wherein, ​ 10. The chair lift armrest of claim 1, wherein, ​

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