Linkage unlocking type middle armrest structure

Abstract

The utility model relates to a linkage unlocking type middle handrail structure which comprises two fixing bodies, a handrail body and a fixing shaft connected to the two fixing bodies, the handrail body is rotationally connected to the fixing shaft, a limiting wheel provided with a tooth groove is fixedly arranged on the fixing shaft, the limiting wheel and the fixing shaft are coaxially arranged, and the limiting wheel and the fixing shaft are coaxially arranged. The side face of the handrail body is rotationally connected with a linkage piece, one end of the linkage piece is inserted into the tooth groove, one side of the linkage piece is provided with an unlocking piece rotationally connected to the handrail body, the unlocking piece can drive the linkage piece to rotate to be separated from the tooth groove, and the unlocking piece is connected with an elastic assembly fixed to the handrail body. One end of the elastic assembly is located on the linkage piece so as to drive the unlocking piece and the linkage piece to rotate and reset. The limiting device has the advantage of guaranteeing limiting.

Description

Technical Field

[0001] The utility model belongs to the technical field of middle armrests, and in particular relates to a linkage unlocking type middle armrest structure. Background Art

[0002] The center armrest of the seat was originally used to provide elbow support for passengers, and later developed into a storage box in the car, including an armrest panel, which can facilitate passengers to talk, work, read documents, etc. The center armrest of the seat has two types: front armrest and rear armrest. The front armrest is set in the middle of the front seat to provide elbow support for the front seat passengers, and the rear armrest is set in the center of the back seat. Most of them are retractable and can provide elbow space for the rear passengers.

[0003] The Chinese utility model patent with authorization announcement number CN207140890U discloses a locking mechanism for the center armrest of the rear seat of an automobile, including a fixed bracket welded to the rear seat frame, a rotating pin riveted to the center armrest bracket, the center armrest bracket is arranged on one side of the fixed bracket, and the locking plastic part is arranged on the other side of the fixed bracket, and the center armrest bracket and the locking plastic part are respectively connected to the fixed bracket by rotating the fixed pin; when in use, the limit pin will move on the damping surface of the locking plastic part during movement, and the locking groove of the locking plastic part provides resistance when the limit pin is opened and closed, thereby avoiding automatic opening and jumping during the bumping of the car, but the locking effect in this technical solution is poor, and the rotation limit of the center armrest bracket is only achieved by damping, and the limit of the center armrest bracket cannot be guaranteed. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a linkage unlocking middle armrest structure with guaranteed limit.

[0005] The technical solution of the utility model is as follows:

[0006] A linkage unlocking middle armrest structure, comprising two fixed bodies, an armrest body and a fixed shaft connected to the two fixed bodies, the armrest body being rotatably connected to the fixed shaft, a limiting wheel with a tooth groove being fixed on the fixed shaft, the limiting wheel being coaxially arranged with the fixed shaft, a linkage piece having one end inserted in the tooth groove being rotatably connected to the side of the armrest body, an unlocking piece rotatably connected to the armrest body on one side of the linkage piece, the unlocking piece being able to drive the linkage piece to rotate out of the tooth groove, the unlocking piece being connected to an elastic component fixed to the armrest body, one end of the elastic component being located on the linkage piece to drive the unlocking piece and the linkage piece to rotate and reset.

[0007] Furthermore, the elastic component includes a spring fixed on the armrest body, one end of the spring passes through the unlocking plate and extends above the linkage plate, and a gap B is provided between the one end of the spring and the upper side surface of the linkage plate.

[0008] Furthermore, a linkage groove is provided on the lower side of the linkage piece, an unlocking pin located on the unlocking piece is arranged in the linkage groove, and a gap A is provided between the upper side of the linkage groove and the unlocking pin, and the gap A is the same as the gap B.

[0009] Furthermore, a mounting shaft is provided on the armrest body, the linkage piece and the unlocking piece are both rotatably connected to the mounting shaft, and the spring is fixed on the mounting shaft.

[0010] Furthermore, a placement groove is provided on the side of the installation shaft away from the armrest body, the spring is sleeved on the installation shaft and one end of the spring is inserted into the placement groove, and the installation shaft is detachably connected with a limiting convex ring whose side contacts the spring, and the limiting convex ring is located at the end of the spring away from the unlocking piece.

[0011] Furthermore, a plug-in groove is provided on the circumferential side surface of the installation shaft, and a notch smaller than the diameter of the installation shaft is provided at one end of the limiting convex ring, and the limiting convex ring is inserted into the plug-in groove through interference fit through the notch.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model realizes the rotation and reset of the unlocking piece and the linkage piece through the elastic component, ensures the insertion of the linkage piece and the tooth groove, ensures the limit of the armrest body, and drives the linkage piece to rotate through the unlocking piece, so as to facilitate the linkage piece to be separated from the tooth groove and ensure unlocking;

[0014] 2. The utility model sets the interval A so that the unlocking pin will not contact the linkage piece when it moves slightly, thereby increasing the rotation angle required for the unlocking piece to drive the linkage piece to unlock, thereby avoiding unlocking due to accidental contact by personnel;

[0015] In a word, the utility model has the advantage of ensuring the limit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A;

[0018] Figure 3 For this utility model Figure 1 Structural diagram of the fixed body, linkage piece and unlocking piece.

[0019] In the figure, 1, armrest body, 2, fixed body, 3, fixed shaft, 4, linkage plate, 41, linkage groove, 5, unlocking plate, 51, unlocking pin, 6, limiting wheel, 61, tooth groove, 7, installation shaft, 71, placement groove, 72, plug-in groove, 8, limiting convex ring, 9, spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1-3 As shown, a linkage unlocking type middle armrest structure comprises two fixed bodies 2, an armrest body 1 and a fixed shaft 3 connected to the two fixed bodies 2, the armrest body 1 is connected to the fixed shaft 3 through a bearing, a limiting wheel 6 with a tooth groove 61 is fixed on the fixed shaft 3, the limiting wheel 6 is coaxially arranged with the fixed shaft 3, a linkage piece 4 with one end inserted in the tooth groove 61 is rotatably connected to the side of the armrest body 1, an unlocking piece 5 rotatably connected to the armrest body 1 is arranged on one side of the linkage piece 4, the unlocking piece 5 can drive the linkage piece 4 to rotate out of the tooth groove 61, the unlocking piece 5 is connected to an elastic component fixed to the armrest body 1, one end of the elastic component is located on the linkage piece 4, so as to drive the unlocking piece 5 and the linkage piece 4 to rotate and reset;

[0022] The elastic component includes a spring 9 fixed on the armrest body 1, the unlocking piece 5 is provided with a hole, one end of the spring 9 passes through the hole on the unlocking piece 5 and extends to the top of the linkage piece 4, and a gap B is provided between one end of the spring 9 and the upper side of the linkage piece 4;

[0023] A linkage groove 41 is provided on the lower side of the linkage piece 4, and an unlocking pin 51 fixed on the unlocking piece 5 is provided in the linkage groove 41. A gap A is provided between the upper side of the linkage groove 41 and the unlocking pin 51, and the gap A is the same as the gap B.

[0024] When in use, the fixed body 2 is fixed to the seat frame, and a pull wire is connected to the unlocking piece 5, and then the unlocking piece 5 is driven by the pull wire to rotate 11° clockwise through an idle stroke. At this time, the unlocking pin 51 on the unlocking piece 5 touches the linkage piece 4, and continues to drive the unlocking piece 5 to rotate. The unlocking pin 51 on the unlocking piece 5 contacts the linkage piece 4, thereby driving the linkage piece 4 to rotate. After the unlocking piece 5 and the linkage piece 4 rotate 15°, the linkage piece 4 is disengaged from the tooth groove 61, and the armrest body 1 can rotate counterclockwise at this time. When the armrest body 1 rotates 15°, the pull wire can be released. At this time, because the linkage piece 4 is resisted, it cannot be locked and engaged, and can continue to rotate until the 90° movement stroke is completed;

[0025] When the armrest body 1 is reset, the linkage piece 4 will move along the limiting wheel 6. When it returns to the 10° position, the spring 9 drives the linkage piece 4 and the unlocking piece 5 to lock. Until it is reset to the 0° position, the linkage piece 4 is inserted into the tooth groove 61, and the armrest body 1 is locked, completing the reset action.

[0026] In this embodiment, a mounting shaft 7 is fixed on the armrest body 1, the linkage piece 4 and the unlocking piece 5 are connected to the mounting shaft 7 through a bearing or other rotational connection method, and the spring 9 is fixed on the mounting shaft 7;

[0027] When in use, the unlocking piece 5 and the linkage piece 4 rotate about the same center point by setting the mounting shaft 7, thereby reducing the matching error and saving the Z-direction space.

[0028] In this embodiment, a placement groove 71 is provided on the side of the installation shaft 7 away from the armrest body 1, the spring 9 is sleeved on the installation shaft 7 and one end of the spring 9 is inserted into the placement groove 71, and the installation shaft 7 is detachably connected with a limiting convex ring 8 whose side contacts the spring 9, and the limiting convex ring 8 is located at the end of the spring 9 away from the unlocking piece 5;

[0029] When in use, the spring 9 is limited in the center position by the mounting shaft 7, and one end of the spring 9 is fixed by the placement groove 71. Finally, the limiting convex ring 8 is set to prevent the spring 9 from detaching from the mounting shaft 7, thereby ensuring the fixation of the spring 9.

[0030] In this embodiment, a plug-in groove 72 is provided on the circumferential side of the installation shaft 7, and a notch smaller than the diameter of the installation shaft 7 is provided at one end of the limiting protrusion 8. The limiting protrusion 8 is inserted into the plug-in groove 72 through interference fit through the notch; when in use, the notch and the plug-in groove 72 are matched to facilitate the fixation of the limiting protrusion 8, thereby facilitating the disassembly and assembly of the spring 9.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein; any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A linkage unlocking middle armrest structure, comprising two fixed bodies, an armrest body and a fixed shaft connected to the two fixed bodies, characterized in that: The armrest body is rotatably connected to the fixed shaft, and a limiting wheel with a tooth groove is fixed on the fixed shaft. The limiting wheel is coaxially arranged with the fixed shaft. The side of the armrest body is rotatably connected to a linkage piece whose end is inserted in the tooth groove. One side of the linkage piece is provided with an unlocking piece rotatably connected to the armrest body. The unlocking piece can drive the linkage piece to rotate out of the tooth groove. The unlocking piece is connected to an elastic component fixed to the armrest body, and one end of the elastic component is located on the linkage piece to drive the unlocking piece and the linkage piece to rotate and reset.

2. The linkage unlocking middle armrest structure according to claim 1, characterized in that: The elastic component includes a spring fixed on the armrest body, one end of the spring passes through the unlocking plate and extends above the linkage plate, and a gap B is provided between the one end of the spring and the upper side surface of the linkage plate.

3. The linkage unlocking middle armrest structure according to claim 2, characterized in that: A linkage groove is provided on the lower side of the linkage piece, an unlocking pin located on the unlocking piece is arranged in the linkage groove, a gap A is provided between the upper side of the linkage groove and the unlocking pin, and the gap A is the same as the gap B.

4. The linkage unlocking middle armrest structure according to claim 2, characterized in that: A mounting shaft is arranged on the armrest body, the linkage piece and the unlocking piece are both rotatably connected to the mounting shaft, and the spring is fixed on the mounting shaft.

5. The linkage unlocking middle armrest structure according to claim 4, characterized in that: A placement groove is provided on the side of the installation shaft away from the armrest body, the spring is sleeved on the installation shaft and one end of the spring is inserted into the placement groove, the installation shaft is detachably connected with a limiting convex ring whose side contacts the spring, and the limiting convex ring is located at the end of the spring away from the unlocking piece.

6. The linkage unlocking middle armrest structure according to claim 5, characterized in that: A plug-in groove is provided on the circumferential side of the installation shaft, a notch smaller than the diameter of the installation shaft is provided on one end of the limiting convex ring, and the limiting convex ring is inserted into the plug-in groove through interference fit in the notch.

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