Four-way manual headrest adjusting mechanism

Abstract

The invention belongs to the technical field of automobile headrests, and relates to a four-way manual headrest adjusting mechanism which is mainly composed of a support, a headrest rod, a guide sleeve, an unlocking module and the like which are integrated in a headrest. The mechanism makes full use of conventional general parts with stable performance, and is simple in structure, stable and reliable. Unlocking is achieved at the same time through a button on the side face, up-down adjustment and front-back adjustment can be achieved, and a comfortable position and safety protection are provided for passengers. The mechanism can be quickly and freely combined into three configurations of two-way up-down adjustment, two-way front-back adjustment and four-way adjustment according to requirements, and different choices are provided for customers. Meanwhile, due to the fact that conventional universal components are directly utilized, the performance is stable and reliable, and the problems of shaking and noise caused by complex structures of similar products are solved. The four-way manual headrest adjusting mechanism is suitable for various application scenes needing manual headrest adjustment, the adjusting mechanism is simple and reliable in structure, and the size and the stroke can be flexibly changed and adjusted according to needs.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of automobile headrests, and particularly relates to a four-direction manual headrest adjusting mechanism. BACKGROUND

[0002] The headrest above the automobile seat is used for supporting the head and neck of the user, and in order to adapt to users of different body sizes and heights, the height of the headrest needs to be adjusted. However, most headrest height adjustments can only be adjusted along the pre-set gears on the support rod, and can only be adjusted up and down. The four-direction adjustable headrest increases the front and rear position adjustment compared with the ordinary headrest, and the mechanism is integrated in the headrest, which can be adjusted to a more comfortable position by one-key adjustment on the headrest button.

[0003] The prior art discloses a manual four-direction headrest mechanism, comprising: a skeleton shell vertically and slidably connected on two headrest rods, two vertical locking mechanisms installed on the skeleton shell and clamped on the two headrest rods, a horizontal push rod horizontally and slidably connected in the skeleton shell and pushing the two vertical locking mechanisms to be unlocked synchronously, a headrest skeleton shell sub-assembly slidably connected on the skeleton shell in the front and rear direction of the skeleton shell, a Z-direction locking mechanism for locking the headrest skeleton shell sub-assembly and the skeleton shell, and a vertical push rod for unlocking the Z-direction locking mechanism, the horizontal push rod pushes the vertical push rod to move up and down in the skeleton shell and unlocks the Z-direction locking mechanism. The prior art also discloses an integrated manual four-direction adjusting seat headrest mechanism, a plurality of clamping grooves are arranged on the headrest rod at intervals, the headrest skeleton includes a core piece base, the bottom end of the headrest shell is provided with a strip-shaped hole extending in the X direction, the headrest rod is inserted into the core piece base through the strip-shaped hole and is gap-fitted with the core piece base, a locking push plate is slidably arranged on the core piece base in the Y direction, a locking pin is arranged on the locking push plate and clamped in the clamping groove corresponding to the height on the headrest rod, one end of the locking push plate is connected with a button assembly, a return spring is arranged between the locking push plate and the core piece base, a movable piece is slidably arranged on the core piece base in the X direction, the headrest shell is fixedly connected with the movable piece, and an X-direction locking assembly for limiting the front and rear sliding of the movable piece is arranged on the locking push plate; the button assembly is pressed, and the Y-direction and X-direction of the headrest mechanism can be unlocked at the same time. However, the above headrest mechanism has a complex structure, a large number of parts, and needs to develop special structures for locking and eliminating gaps; moreover, the appearance and the adjusting stroke cannot be changed, and the adaptive flexibility is insufficient.

[0004] Therefore, there is an urgent need to develop a new four-direction manual headrest adjusting mechanism to effectively solve the above problems. SUMMARY

[0005] The four-direction manual headrest adjusting mechanism can be used in various application occasions that need to manually adjust the headrest.

[0006] The present application is realized by the following technical solutions: A four-way manual headrest adjusting mechanism, comprising a rack 8, a pair of horizontal guide sleeve supports 9 and a pair of vertical guide sleeve supports 10, the pair of horizontal guide sleeve supports 9 and the pair of vertical guide sleeve supports 10 are welded and fixed with the rack 8 to form a rack welding assembly; a horizontal guide sleeve 14 and a vertical guide sleeve 13 are installed on the rack welding assembly to form a rack assembly; A guide sleeve unlocking key integrally formed with the horizontal guide sleeve 14 is arranged on the horizontal guide sleeve 14 on the inner side, and a guide sleeve unlocking key integrally formed with the vertical guide sleeve 13 is arranged on the vertical guide sleeve 13 adjacent to the horizontal guide sleeve 14; Two horizontal headrest rods 5 pass through the two horizontal guide sleeve supports 9 respectively, and two vertical headrest rods 12 pass through the two vertical guide sleeve supports 10 respectively; the horizontal headrest rods 5 are welded at the ends on the horizontal connecting plates 6; the unlocking plates 7 are hinged with the horizontal connecting plates 6; the two horizontal headrest rods 5, the unlocking plates 7 and the horizontal connecting plates 6 form a horizontal connecting plate assembly; The unlocking button 1 is arranged on the horizontal connecting plate 6, the front end of which extends out of the horizontal connecting plate 6 and can contact the unlocking plate 7 under the action of external force; The rack 8 is provided with a sliding block base 4, the sliding block base 4 is provided with an unlocking sliding block 2 and a reset spring 3, and a sliding block assembly is formed; the unlocking sliding block 2 is provided with an unlocking end extending upward and downward, which can contact the guide sleeve unlocking key and push the guide sleeve unlocking key to move under the action of external force.

[0007] Further, the pair of horizontal guide sleeve supports 9 are symmetrically welded on the top of the rack 8 in the horizontal direction; the pair of vertical guide sleeve supports 10 are symmetrically welded on the back of the rack 8 in the vertical direction and are located on the left and right sides of the pair of horizontal guide sleeve supports 9.

[0008] Further, one horizontal guide sleeve 14 is installed outside each horizontal guide sleeve support 9, and one vertical guide sleeve 13 is installed outside each vertical guide sleeve support 10; the horizontal guide sleeve 14 is sleeved outside the corresponding horizontal guide sleeve support 9 and is fixed on the guide sleeve support through interference fit and clamping, and the vertical guide sleeve 13 is sleeved outside the corresponding vertical guide sleeve support 10 and is fixed on the guide sleeve support through interference fit and clamping.

[0009] Further, the horizontal headrest rod 5 is in transition fit with the corresponding horizontal guide sleeve support 9, and the vertical headrest rod 12 is in transition fit with the corresponding vertical guide sleeve support 10.

[0010] Further, limit pins 11 are installed at the first and second ends of the horizontal headrest rod 5 and the vertical headrest rod 12.

[0011] Further, the horizontal connecting plate 6 is L-shaped, and the horizontal connecting plate 6 is provided with a mounting hole of the unlocking button 1 and a limiting mounting hole of the unlocking plate 7.

[0012] Further, the unlocking plate 7 is a plastic piece, which is composed of a rectangular plate structure and a connecting shaft integrally formed with the rectangular plate structure, and the connecting shaft can be inserted into the limiting mounting hole on the horizontal connecting plate 6, so that the unlocking plate 7 is hinged on the horizontal connecting plate 6.

[0013] Further, the sliding block base 4 is fixed on the clamping hole of the back plate of the back of the rack 8 through the back clamping structure.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows: 1. The four-way manual headrest adjusting mechanism can be unlocked by one key, and four-way adjustment in up-down and front-rear directions is realized. 2. The four-way manual headrest adjusting mechanism can be quickly and freely combined into three configurations of two-way up-down adjustment, two-way front-rear adjustment and four-way adjustment according to requirements, so as to provide different choices for customers. 3. The four-way manual headrest adjusting mechanism has simple and reliable structure, and the size and stroke can be flexibly changed and adjusted according to requirements. 4. The four-way manual headrest adjusting mechanism directly uses the conventional universal component guide sleeve and headrest rod, has stable and reliable performance, and solves the shaking and noise problems of similar products. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 (a)- Figure 1 (d) is a structural schematic view of each angle of the four-way manual headrest adjusting mechanism of the present application. Figure 2 is a structural schematic view of the rack; Figure 3 is a structural schematic view of the guide sleeve support; Figure 4 (a)- Figure 4 (c) is a structural schematic view of each angle of the horizontal connecting plate assembly; Figure 5 is a structural schematic view of the rack assembly; Figure 6 (a)- Figure 6 (b) is a structural schematic view of the sliding block base; Figure 7Fig. 1 is a structural schematic diagram of a slider assembly; Figure 8 (a) is a schematic diagram of a locking state of a slider; Figure 8 (c) is a schematic diagram of an unlocking state of an unlocking button; Figures 9-10 Fig. 1 is a structural schematic diagram of a slider assembly;

[0018] Fig. 1 is a structural schematic diagram of a slider assembly; DETAILED DESCRIPTION

[0020] The application will be further described below in conjunction with the embodiments. The application will be further described below in conjunction with the embodiments.

[0021] It should be noted that similar reference numerals and letters refer to similar items throughout the drawings, and thus, once an item is defined in one drawing, it is not necessary to further define and explain it in subsequent drawings. Meanwhile, in the description of the application, the terms "first", "second", and the like are merely used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0022] The four-way manual headrest adjusting mechanism of the application mainly comprises a bracket, a headrest rod, a guide sleeve and an unlocking module integrated in the headrest. The mechanism fully utilizes conventional general components with stable performance, and has simple structure and stable and reliable performance. Through simultaneous unlocking of a button on the side, two-way up-down and front-back adjusting can be realized, and comfortable position and safety protection are provided for the occupant. The mechanism can be quickly and freely combined into three configurations of two-way up-down adjusting, two-way front-back adjusting and four-way adjusting according to requirements, and different choices are provided for customers. Meanwhile, because the conventional general components are directly utilized, the shaking and noise problems caused by the complex structure of similar products are solved. The mechanism is suitable for various application scenarios requiring manual adjusting of the headrest.

[0023] Specifically, the four-way manual headrest adjusting mechanism of the application, as shown in Fig. 1, mainly comprises a bracket 1, a headrest rod 2, a guide sleeve 3 and an unlocking module 4. Figures 1-10As shown, it comprises a rack 8, a pair of horizontal guide sleeve supports 9 symmetrically welded on the top of the rack 8 in horizontal direction, and a pair of vertical guide sleeve supports 10 symmetrically welded on the back of the rack 8 in vertical direction, located on the left and right sides of the pair of horizontal guide sleeve supports 9. The pair of horizontal guide sleeve supports 9 and the pair of vertical guide sleeve supports 10 are fixedly welded with the rack 8 to form a rack welding assembly.

[0024] The horizontal guide sleeve 14 and the vertical guide sleeve 13 are installed on the rack welding assembly to form a rack assembly. Specifically, one horizontal guide sleeve 14 is installed on the outside of each horizontal guide sleeve support 9, and one vertical guide sleeve 13 is installed on the outside of each vertical guide sleeve support 10. The horizontal guide sleeve 14 is sleeved on the outside of the corresponding horizontal guide sleeve support 9 in interference fit and is fixed on the guide sleeve support by clamping, and the vertical guide sleeve 13 is sleeved on the outside of the corresponding vertical guide sleeve support 10 in interference fit and is fixed on the guide sleeve support by clamping. In the present application, the horizontal guide sleeve 14 and the vertical guide sleeve 13 are both conventional general components.

[0025] The horizontal guide sleeve 14 on the inner side is provided with a guide sleeve unlocking key integrally formed therewith, and the vertical guide sleeve 13 adjacent to the horizontal guide sleeve 14 is also provided with a guide sleeve unlocking key integrally formed therewith.

[0026] Two horizontal headrest rods 5 pass through the inside of the two horizontal guide sleeve supports 9 respectively, and two vertical headrest rods 12 pass through the inside of the two vertical guide sleeve supports 10 respectively. The horizontal headrest rod 5 is in interference fit with the corresponding horizontal guide sleeve support 9, and the vertical headrest rod 12 is in interference fit with the corresponding vertical guide sleeve support 10.

[0027] Limiting pins 11 are installed at the head and tail ends of the horizontal headrest rod 5 and the vertical headrest rod 12.

[0028] The horizontal headrest rod 5 is welded at the end of the horizontal connecting plate 6. The horizontal connecting plate 6 is L-shaped, and is provided with a mounting hole of the unlocking button 1 and a limiting mounting hole of the unlocking plate 7.

[0029] The unlocking plate 7 is a plastic piece composed of a rectangular plate structure and a connecting shaft integrally formed therewith. The connecting shaft can be inserted into the limiting mounting hole on the horizontal connecting plate 6 to hinge the unlocking plate 7 on the horizontal connecting plate 6. The two horizontal headrest rods 5, the unlocking plate 7 and the horizontal connecting plate 6 form a horizontal connecting plate assembly.

[0030] The unlocking button 1 is arranged on the horizontal connecting plate 6, the front end of which protrudes out of the horizontal connecting plate 6 and can contact the unlocking plate 7 under external force.

[0031] The rack 8 is provided with a sliding block base 4, which is fixed on the clamping hole of the back plate of the back of the rack 8 through a back clamping structure.

[0032] The unlocking slider 2 and the return spring 3 are installed on the slider base 4, thereby constructing a slider assembly. The unlocking slider 2 is provided with an unlocking end extending upward and downward, which can contact with the guide sleeve unlocking key under the action of external force and push the guide sleeve unlocking key to move.

[0033] In the present application, the horizontal connecting plate assembly, the vertical headrest rod 12, the limiting pin 11, the slider assembly, the unlocking button 1 and the rack assembly jointly constitute an adjusting mechanism. When the unlocking button 1 is pressed, the button pushes the unlocking plate 7, the unlocking plate 7 pushes the unlocking slider 2, and the unlocking slider 2 pushes the guide sleeve unlocking key at both ends. The guide sleeve unlocking key pushes the guide sleeve locking pin, the guide sleeve is unlocked, and the horizontal and vertical headrest rods can freely slide in the guide sleeve to realize the adjusting action. The guide sleeve locking pin is integrated in the guide sleeve and contained in the guide sleeve assembly, which belongs to a general structure.

[0034] It should be noted that the design of the above-mentioned digital prototype model, the parameter setting of each material, and the selection of the measuring plane are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A four-way manual headrest adjustment mechanism, characterized in that: It includes a frame (8), a pair of horizontal guide sleeve brackets (9) and a pair of vertical guide sleeve brackets (10). The pair of horizontal guide sleeve brackets (9) and the pair of vertical guide sleeve brackets (10) are welded and fixed to the frame (8) to form a frame welding assembly; the horizontal guide sleeve (14) and the vertical guide sleeve (13) are installed on the frame welding assembly to form a frame assembly. The horizontal guide sleeve (14) located on the inner side is provided with a guide sleeve unlocking key integrally formed therewith, and the vertical guide sleeve (13) adjacent to the horizontal guide sleeve (14) is also provided with a guide sleeve unlocking key integrally formed therewith. Two horizontal guide sleeve brackets (9) each have a horizontal headrest rod (5) passing through their interiors, and two vertical guide sleeve brackets (10) each have a vertical headrest rod (12) passing through their interiors; the ends of the horizontal headrest rods (5) are welded to the horizontal connecting plate (6); the unlocking plate (7) is hinged to the horizontal connecting plate (6); the two horizontal headrest rods (5), the unlocking plate (7), and the horizontal connecting plate (6) constitute the horizontal connecting plate assembly; The unlock button (1) is set on the horizontal connecting plate (6), with its front end extending out of the horizontal connecting plate 6, and its front end can contact the unlock plate 7 under the action of external force; The frame (8) is equipped with a slider base (4), and the slider base (4) is equipped with an unlocking slider (2) and a reset spring (3) to form a slider assembly. The unlocking slider (2) is provided with an unlocking end that extends upward and downward, which can contact the unlocking key of the guide sleeve under the action of external force and push the unlocking key of the guide sleeve to move.

2. The four-way manual headrest adjustment mechanism according to claim 1, characterized in that: The pair of horizontal guide sleeve brackets (9) are symmetrically welded to the top of the frame (8) in the horizontal direction; the pair of vertical guide sleeve brackets (10) are symmetrically welded to the back of the frame (8) in the vertical direction, located on the left and right sides of the pair of horizontal guide sleeve brackets (9).

3. The four-way manual headrest adjustment mechanism according to claim 1, characterized in that: Each horizontal guide sleeve bracket (9) has a horizontal guide sleeve (14) installed on its exterior, and each vertical guide sleeve bracket (10) has a vertical guide sleeve (13) installed on its exterior. The horizontal guide sleeve (14) is fitted onto the exterior of the corresponding horizontal guide sleeve bracket (9) with an interference fit and is fixed to the guide sleeve bracket by snap-fit. The vertical guide sleeve (13) is fitted onto the exterior of the corresponding vertical guide sleeve bracket (10) with an interference fit and is fixed to the guide sleeve bracket by snap-fit.

4. The four-way manual headrest adjustment mechanism according to claim 1, characterized in that: The horizontal headrest rod (5) and the corresponding horizontal guide sleeve bracket (9) are in transition fit, and the vertical headrest rod (12) and the corresponding vertical guide sleeve bracket (10) are in transition fit.

5. A four-way manual headrest adjustment mechanism according to claim 1, characterized in that: Limit pins (11) are installed at both ends of the horizontal headrest rod (5) and the vertical headrest rod (12).

6. The four-way manual headrest adjustment mechanism according to claim 1, characterized in that: The horizontal connecting plate (6) is L-shaped and has mounting holes for the unlock button (1) and limit mounting holes for the unlock plate (7).

7. A four-way manual headrest adjustment mechanism according to claim 1, characterized in that: The unlocking plate (7) is a plastic part, consisting of a rectangular plate structure and a connecting shaft integrally formed therewith. The connecting shaft can be inserted into the limiting mounting hole on the horizontal connecting plate (6) to hinge the unlocking plate (7) onto the horizontal connecting plate 6.

8. A four-way manual headrest adjustment mechanism according to claim 1, characterized in that: The slider base (4) is fixed to the snap-fit ​​hole on the back plate of the frame (8) by a back snap-fit ​​structure.

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