Headrest skeleton

Abstract

The utility model belongs to headrest frame technical field, concretely relates to headrest framework, including bottom plate, the side plate of bottom plate both sides, the side plate with the side edge pivot connection of bottom plate, be equipped with the control rod of up and down movement on the bottom plate, the first rubber cover of guide is equipped with the outer cover of control rod, first rubber cover is connected in bottom plate, be equipped with control rod between two side plates, the both sides of control panel are equipped with guide pin, be equipped with guide hole on the side plate, guide pin is in guide hole, control panel is connected with control rod, integrated control structure realizes headrest height lift control, headrest angle swing control, significantly reduce the thickness, width of backrest framework, be convenient for storage and transportation.

Description

Technical Field

[0001] This utility model belongs to the field of headrest frame technology, specifically relating to headrest frames. Background Technology

[0002] The headrest frame and backrest frame of sofas or chairs are generally movable connection structures. There are lifting drive devices that drive the headrest frame to rise and fall, and angle adjustment devices that drive the headrest angle adjustment. The existing lifting drive devices and angle adjustment devices occupy a large space in the backrest frame. In addition, space needs to be reserved for the drive device during the driving process, resulting in a thick and bulky backrest frame, which is inconvenient for storage and transportation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to address the above-mentioned defects by providing a backrest and headrest frame with an integrated control structure to achieve headrest height adjustment control and headrest angle swing control, significantly reducing the thickness and width of the backrest frame, and facilitating storage and transportation.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: The headrest frame includes a base plate and side plates on both sides of the base plate. The side plates are pivotally connected to the sides of the base plate. The base plate is provided with a control rod that moves up and down. The control rod is covered with a first guide sleeve, which is connected to the base plate. The control rod is located between the two side plates. The control plate is provided with guide pins on both sides. The side plates are provided with guide holes, and the guide pins are located in the guide holes. The control plate is connected to the control rod.

[0005] Furthermore, the control panel is positioned above the base plate, and the pivot connection between the side plate and the base plate is located below the control panel. The pivot connection between the side plate and the base plate is offset to the front or rear side of the side plate.

[0006] Furthermore, the control rod and the first rubber sleeve are coaxially arranged, and the control rod and the first rubber sleeve are slidably engaged.

[0007] Furthermore, the guide hole is located above the control rod.

[0008] Furthermore, the guide hole is a strip-shaped hole, the guide hole has a higher end, the higher end of the guide hole is close to the front side of the side plate, and the lower end of the other side of the guide hole is close to the rear side of the side plate.

[0009] Furthermore, the two side plates are connected by a connecting plate.

[0010] Furthermore, a second rubber sleeve is provided at the bottom of the base plate, the first rubber sleeve is fitted over the second rubber sleeve, and a locking unit is provided between the first rubber sleeve and the second rubber sleeve.

[0011] Furthermore, the first rubber sleeve is provided with a locking pin arranged radially, the locking pin being threadedly engaged with the first rubber sleeve, and the second rubber sleeve is provided with an annular groove, the inner end of the locking pin being embedded in the annular groove, thereby locking the first rubber sleeve and the second rubber sleeve.

[0012] Furthermore, the first rubber sleeve has a locking hole, which includes a straight section near the bottom end face of the first rubber sleeve and parallel to the bottom end face, and an arc-shaped transition section extending smoothly from the straight section to the bottom end face. The transition section has an opening on the bottom end face of the first rubber sleeve, and the second rubber sleeve has a protruding post. The protruding post and the locking hole constitute the locking mechanism.

[0013] Furthermore, a resetting elastic element is provided between the base plate and the control rod.

[0014] The beneficial effects of the present invention are as follows: by adopting the above solution, the swing of the headrest frame is controlled by the lifting control rod, the lifting amplitude of the control rod controls the swing angle of the headrest frame, the guide hole controls the swing direction of the headrest frame while limiting the swing stroke, and the control rod also has the function of a headrest rod, realizing the integrated structural design of the headrest frame, which is simple in structure. Attached Figure Description

[0015] The foregoing and other objects, features and advantages of this utility model will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0016] Figure 1 This is a structural schematic diagram of the present invention from the front view.

[0017] Figure 2 This is a structural schematic diagram of the present invention from the rear side view.

[0018] Figure 3 This is a side view of the side plate in this utility model.

[0019] Figure 4 This is a cross-sectional schematic diagram of the control rod in this utility model.

[0020] Figure 5 This is a cross-sectional schematic diagram of the first rubber sleeve in this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the first rubber sleeve in this utility model.

[0022] Figure 7 This is a schematic diagram of the structure of the second rubber sleeve in this utility model.

[0023] Figure 8 This is a side view of the side plate in one embodiment of the present invention.

[0024] Wherein: 10 is the base plate, 20 is the control plate, 21 is the guide pin, 30 is the side plate, 31 is the guide hole, 32 is the connecting plate, 33 is the pivot hole, 40 is the control rod, 50 is the first rubber sleeve, 51 is the locking hole, 511 is the straight section, 512 is the transition section, 60 is the second rubber sleeve, 61 is the annular groove, 62 is the protruding post, and 70 is the spring. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] See Figure 1 , Figure 2 The headrest frame includes a base plate 10 and a control plate 20 disposed on the upper side of the base plate 10. Side plates 30 are provided on the left and right sides of the base plate 10. The two side plates 30 are connected by a connecting plate 32. The connecting plate 32 is located on the upper side of the control plate 20. The lower part of the side plate 30 is movably connected to the base plate 10. The left and right ends of the base plate 10 are provided with pivot shafts. The plate body of the side plate 30 can be rotatably engaged with the pivot shafts. The base plate 10, the side plates 30, and the connecting plate 32 constitute the main body of the headrest frame. The side plates 30 and the connecting plate 32 form a headrest swing frame for adjusting the angle of the headrest. The two ends of the connecting plate 32 can be welded to the corresponding upper part of the side plate 30, forming a stable main body structure.

[0027] The control panel 20 is located in the longitudinal space between the base plate 10 and the connecting plate 32, and can move up and down. A control lever 40 is provided on the base plate 20, and the control lever 40 passes through the base plate 10 vertically. Figure 4 A first rubber sleeve 50 is provided on the base plate 10. A control rod 40 passes through the axis of the first rubber sleeve 50 and is coaxial with the first rubber sleeve 50. The upper end of the control rod 40 is connected to the control plate 20 located above the first rubber sleeve 50, and the lower end of the control rod 40 extends to the lower side of the base plate 10. The lower end of the control rod 40 is connected to an external power element, and the control rod 40 is driven by the external power element to push the control plate 20 to move up and down. The control rod 40 also forms a headrest rod of the headrest frame, which can be used for the installation of this headrest frame with a seat or sofa.

[0028] Reference Figure 3 The lower part of the side plate 30 is provided with a pivot hole 33 that cooperates with the pivot shaft of the base plate 1. The pivot hole 33 is offset on one side of the side plate 30. In this embodiment, the pivot hole 33 is located on the front side of the lower part of the side plate 30 (corresponding to the left side of the lower part of the plate in the figure). The two ends of the control plate 20 are provided with guide pins 21. The upper part of the side plate 30 is provided with a strip-shaped guide hole 31. The guide pin 21 is located in the guide hole 31. The outer diameter of the guide pin 21 is matched with the inner diameter of the guide hole 31. The front end of the guide hole 31 near the front side of the side plate is lower than its rear end near the rear side of the side plate. The guide hole 31 in the upper part of the side plate 30 is a strip-shaped hole that is inclined from front to back.

[0029] When the control plate 20 rises, the guide pin 21 rises accordingly. The guide pin 21 moves within the guide hole 31, applying an upward force to the side plate 30. Since the position of the side plate 30 is restricted by the base plate 10, under the guidance of the guide hole 31, the side plate 30 rotates around the pivot hole 33. The upper part of the side plate 30 rotates and swings forward. When the control plate 20 is lowered, it drives the rear side of the side plate 30 to rotate and swing back to its original position. This achieves the back-and-forth swing of the headrest swing frame.

[0030] In this invention, the control rod 40, control plate 20, guide hole 31, and guide pin 21 form a swing control mechanism. At the same time, the guide hole 31 and guide pin 21 form a swing guide mechanism. In order to realize the swing of the headrest frame along the set direction, compared with the prior art, the swing control mechanism, guide mechanism, etc. are integrated with the headrest frame in this invention. The structure is reasonable, making full use of the longitudinal space of the headrest and the structure of its components, reducing the volume of the headrest frame, ensuring structural strength, improving mechanical performance, and reducing costs.

[0031] Reference Figure 2 , Figure 4 On the rear side of the base plate 10, a reset spring 70 is provided. The upper end of the spring 70 is connected to the control plate 20, and the lower end of the spring 70 is connected to the base plate 10. When the control plate 20 rises, the spring 70 stretches, exerting a pulling force on the control plate 20, causing the control plate 20 to quickly reset, thus realizing the rapid reset of the headrest swing frame. The lifting and lowering amplitude of the control rod 40 controls the swing angle of the headrest swing frame, realizing the control of the headrest swing angle. The length of the guide hole 31 controls the swing stroke.

[0032] Reference Figure 5 A second rubber sleeve 60 is provided at the bottom of the base plate 10, and a first rubber sleeve 50 is fitted over the second rubber sleeve 60. The second rubber sleeve 60 is used to connect with the back of a seat or sofa. In one embodiment, a locking hole 51 is provided along the radial direction of the first rubber sleeve 50, and a threaded locking pin is provided at the locking hole 51. A corresponding annular groove 61 is provided on the second rubber sleeve 60. After the second rubber sleeve 60 is inserted into the first rubber strip 50, the positions of the locking hole 51 and the annular groove 61 are opposite. Rotating the locking pin will cause its front part to be inserted into the annular groove 61, thereby locking the first rubber sleeve 50 and the second rubber sleeve 60 and preventing the first rubber sleeve 50 from separating from the second rubber sleeve 60. Since the second rubber sleeve 60 can be fixed to the back of a sofa or seat, the headrest frame can be quickly installed and removed.

[0033] To improve the stability of the headrest angle swing, there are two control levers 40, which are symmetrically arranged on the left and right sides of the base plate 10. Correspondingly, there are two first rubber sleeves 50 and two second rubber sleeves 60.

[0034] In another implementation, refer to Figure 6 A locking hole 51 is provided in the lower part of the first rubber sleeve 50. The locking hole 51 includes a straight section 511 that is close to and parallel to the bottom end face of the first rubber sleeve 50, and an arc-shaped transition section 512 that extends smoothly from the straight section 511 to the bottom end face. The transition section 512 has an opening on the bottom end face of the first rubber sleeve 50. (Refer to...) Figure 7 The second rubber sleeve 60 is provided with a protrusion 62. When the first rubber sleeve 50 and the second rubber sleeve 60 are engaged, the protrusion 62 enters the transition section 512 through the opening of the transition section 512. When the first rubber sleeve 50 or the second rubber sleeve 60 is rotated, the protrusion 62 will gradually move into the straight section 511 until it moves to the inner end of the straight section 511. The size of this part matches the size of the protrusion 62, forming a lock in the height direction to prevent the first rubber sleeve 50 and the second rubber sleeve 60 from separating.

[0035] In another embodiment, refer to Figure 8 The guide hole 31 is an arc-shaped hole, and the pivot hole 33 is located at the lower part of the guide hole 31. Preferably, the pivot hole 33 is located at the center of the circle where the guide hole 31 is located. The headrest swing frame can be swinged back and forth by raising and lowering the control rod 20.

[0036] In another embodiment, the control plate 20 may be disposed below the base plate 10, corresponding to the lower side of the guide hole 31 and the pivot hole 33.

[0037] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A headrest frame, characterized in that: The device includes a base plate and side plates on both sides of the base plate. The side plates are pivotally connected to the sides of the base plate. The base plate is provided with a control rod that moves up and down. The control rod is covered with a first guide sleeve, which is connected to the base plate. A control plate is provided between the two side plates. The control plate is provided with guide pins on both sides. The side plates are provided with guide holes, and the guide pins are located in the guide holes. The control plate is connected to the control rod.

2. The headrest frame according to claim 1, characterized in that: The control panel is positioned above the base plate, and the pivot connection between the side plate and the base plate is located below the control panel. The pivot connection between the side plate and the base plate is offset to the front or rear side of the side plate.

3. The headrest frame according to claim 1, characterized in that: The control rod and the first rubber sleeve are coaxially arranged, and the control rod and the first rubber sleeve are slidably engaged.

4. The headrest frame according to claim 2, characterized in that: The guide hole is located above the control rod.

5. The headrest frame according to claim 4, characterized in that: The guide hole is a strip-shaped hole with a higher end that is close to the front side of the side plate, and a lower end on the other side of the guide hole that is close to the rear side of the side plate.

6. The headrest frame according to claim 2, characterized in that: The two side plates are connected by a connecting plate.

7. The headrest frame according to claim 1, characterized in that: The bottom of the base plate is provided with a second rubber sleeve, and the first rubber sleeve is fitted over the second rubber sleeve. A locking unit is provided between the first rubber sleeve and the second rubber sleeve.

8. The headrest frame according to claim 7, characterized in that: The first rubber sleeve is provided with a locking pin arranged radially, and the locking pin is threadedly engaged with the first rubber sleeve. The second rubber sleeve is provided with an annular groove, and the inner end of the locking pin is embedded in the annular groove to lock the first rubber sleeve and the second rubber sleeve.

9. The headrest frame according to claim 7, characterized in that: The first rubber sleeve has a locking hole. The locking hole includes a straight section that is close to and parallel to the bottom end face of the first rubber sleeve, and an arc-shaped transition section that extends smoothly from the straight section to the bottom end face. The transition section has an opening on the bottom end face of the first rubber sleeve. The second rubber sleeve has a protruding post. The protruding post and the locking hole form a locking mechanism.

10. The headrest frame according to claim 1, characterized in that: A resetting elastic element is provided between the base plate and the control rod.

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