TWM666809U - Seat adjusting device and seat thereof - Google Patents

Abstract

A seat adjustment device comprises: a bracket having a plurality of positioning grooves, and the bracket is connected to a chair back; an outer sleeve, and the inner diameter of the outer sleeve is fitted to the outer diameter of the bracket, and the outer sleeve can slide relative to the bracket, and the outer sleeve is connected to the seat cushion; a main spring is accommodated in the bracket; a shaft is accommodated in the bracket and the outer sleeve, and the shaft can move relative to the bracket with the outer sleeve, one end of the shaft abuts the end of the outer sleeve, and the other end of the shaft abuts the main spring; a locking mechanism, having a latch, the latch is inserted into any of the plurality of positioning grooves on the bracket to form an interference state; by moving the outer sleeve toward the bracket or moving the outer sleeve away from the bracket, the seat adjustment device provides adjustment of the relative position of the chair back and the seat cushion.

Description

Seat adjustment device and seat thereof

The present invention provides a seat adjustment device and a seat thereof, in particular, a seat adjustment device and a seat thereof for conveniently adjusting the relative position between a seat back and a seat cushion.

If the back of the human body is not properly and comfortably supported when sitting for a long time, it will not only cause back pain, but also may cause permanent damage such as spinal deformity. In order to meet the needs of passengers of different heights and allow users to sit for a long time, the known chair allows users to adjust the relative position of the chair back and the chair cushion. For example, the seat position can be fixed or loosened by adjusting the bolt rotation. However, the above bolt rotation positioning method is not easy for users to operate.

Another seat adjustment method uses a pneumatic rod to provide elastic force so that users can adjust the height of the chair back and seat cushion effortlessly and quickly. However, considering the high cost and inconsistent quality of pneumatic rods, as well as the difficulty in repairing or replacing them after a leak, there is a need for improved seat adjustment methods.

In view of the above problems, the present invention provides a seat adjustment device, which is suitable for adjusting the relative position between a chair backrest and a chair seat cushion. The seat positioning device comprises: a bracket having a plurality of positioning grooves, and the bracket is connected to the chair backrest, and the bracket defines an axial direction; an outer sleeve, and the inner diameter of the outer sleeve is fitted to the outer diameter of the bracket, and the outer sleeve can slide relative to the bracket along the axial direction of the bracket, and the outer sleeve is connected to the backrest of the chair. The outer sleeve is connected to the seat cushion, and has a through hole; a main spring is accommodated in the bracket and buckled with the bracket at one end, and the main spring has a tension state; a shaft is accommodated in the bracket and the outer sleeve, and the shaft can move relative to the bracket along the axis of the bracket in conjunction with the outer sleeve, one end of the shaft abuts the main spring, and the other end of the shaft abuts the end of the outer sleeve; a locking mechanism is provided The outer sleeve is disposed at the outer diameter of the outer sleeve, and the locking mechanism has a latch, which is accommodated in the through hole of the outer sleeve, and the latch is inserted into any of the plurality of positioning grooves on the bracket to form an interference state; wherein, when the outer sleeve moves toward the bracket, the outer sleeve links the shaft to move the shaft toward the bracket, so that the main spring presents the tension state, and can be inserted into any of the plurality of positioning grooves on the bracket with the latch of the locking mechanism. The plurality of positioning grooves are formed to form the interference state, thereby fixing the relative position between the chair back and the chair seat cushion; when the latch is withdrawn from the plurality of positioning grooves, the main spring rebounds in the stretched state to move the outer sleeve away from the bracket; thus, the seat adjustment device provides adjustment of the relative position of the chair back and the chair seat cushion by moving the outer sleeve toward the bracket or the outer sleeve away from the bracket.

In a preferred embodiment, the bracket has two hooks, which are respectively located on two opposite sides of the bracket in the radial direction, and the two hooks provide two ends of the main spring for buckling.

In a preferred embodiment, the locking mechanism has a handle, and the handle has an open state and a locked state. When the handle is in the locked state, the handle links the latch so that the latch selectively inserts into any of the plurality of positioning grooves on the bracket to form the interference state, thereby limiting the locking mechanism to be positioned on the bracket; when the handle is in the open and closed state, the latch withdraws from the plurality of positioning grooves, thereby allowing the latch to escape from the interference state.

In a preferred embodiment, the seat adjustment device has an auxiliary spring, which is sleeved on the outer diameter of the shaft, and the auxiliary spring provides elastic force for the outer sleeve to move away from the bracket.

In a preferred embodiment, the seat adjustment device has a sleeve, which is sleeved on the bracket.

In a preferred embodiment, the liner has a plurality of ribs formed on the surface of the liner to reduce friction when the outer sleeve slides on the surface of the liner.

In a preferred embodiment, the bushing has a through hole, and the through hole provides the shaft to pass through.

In a preferred embodiment, the seat adjustment device has an auxiliary spring, which is sleeved on the outer diameter of the shaft rod, and the auxiliary spring provides elastic force for the outer sleeve to move away from the bracket, and one end of the auxiliary spring is against the bushing.

Another object of the present invention is to provide a chair, comprising: a chair back, a chair seat, and a chair adjustment device. The chair adjustment device is suitable for adjusting the relative position between the chair back and the chair seat. The seat positioning device comprises: a bracket having a plurality of positioning slots, and the bracket is connected to the chair back, and the bracket defines an axial direction; an outer sleeve, and the inner diameter of the outer sleeve is fitted into the outer diameter of the bracket, and the outer sleeve can slide relative to the bracket along the axial direction of the bracket, the outer sleeve is connected to the chair seat, and the outer sleeve has a through hole; a main spring, which is accommodated in the bracket and has a through hole at one end. The main spring is buckled with the bracket, and the main spring has a tension state; a shaft rod is accommodated in the bracket and the outer sleeve, and the shaft rod can move relative to the bracket along the axis of the bracket in conjunction with the outer sleeve, one end of the shaft rod abuts the main spring, and the other end of the shaft rod abuts the end of the outer sleeve; a locking mechanism is arranged on the outer diameter of the outer sleeve, and the locking mechanism has a latch, the The latch is accommodated in the through hole of the outer sleeve, and the latch is inserted into any of the plurality of positioning grooves on the bracket to form an interference state; wherein, when the outer sleeve moves toward the bracket, the outer sleeve links the shaft to move the shaft toward the bracket, so that the main spring presents the tension state, and can be inserted into any of the plurality of positioning grooves on the bracket with the latch of the locking mechanism to form the interference state, thereby fixing the relative position between the chair back and the chair seat; when the latch exits the plurality of positioning grooves, the main spring rebounds from the tension state to move the outer sleeve away from the bracket; thus, by moving the outer sleeve toward the bracket or the outer sleeve away from the bracket, the seat adjustment device provides adjustment of the relative position of the chair back and the chair seat.

The above description of the content of this new model and the following description of the implementation method are used to demonstrate and explain the principle of this new model and provide a further explanation of the scope of patent application of this new model.

1: Chair back

2: Chair cushion

3: Bracket

30: Positioning slot

32: Hook

4: Outer sleeve

5: Main spring

6: Axis rod

60: End

7: Locking mechanism

70: Latch

72:Handle

8: Auxiliary spring

9: Lining

90: Perforation

92: Ribs

The following will be described in detail with the accompanying drawings. It should be noted that, in accordance with standard practice in the industry, various features are not drawn to scale and are only used for illustration purposes. In fact, the size of the components can be arbitrarily enlarged or reduced to clearly show the features of the present invention.

Figure 1 is a three-dimensional schematic diagram of a preferred embodiment of the new chair.

Figure 2 is a schematic diagram of a decomposition of a preferred embodiment of the new seat adjustment device.

Figure 3 is a cross-sectional diagram of the new outer sleeve moving away from the stent.

Figure 4 is a cross-sectional diagram of the interference state formed by the new type of latch

Figure 5 is a partial enlarged schematic diagram of Figure 4

Figure 6 is a cross-sectional diagram of the new type of latch in a state of disengagement from interference.

Figure 7 is a cross-sectional diagram of the new outer sleeve moving toward the stent.

Figure 8 is a cross-sectional diagram of the new type of latch forming an interference state again.

Figure 9 is a cross-sectional diagram of another embodiment of the present invention.

The detailed features and advantages of the new model are described in detail in the following implementation method, and the content is sufficient for anyone familiar with the relevant technology to understand the technical content of the new model and implement it accordingly. According to the content disclosed in this specification, the scope of the patent application and the drawings, anyone familiar with the relevant technology can easily understand the new model. The following examples are to further illustrate the viewpoints of the new model, but they do not limit the scope of the new model with any viewpoints.

The following text may use "at least one" to describe the quantity of the described object, but unless otherwise clearly stated, it should not be limited to the case where the quantity is "only one". The following text may also use terms such as "form", "join", "docking", "setting", "configuration" to describe the relative position relationship between multiple layers, structures, and components, but unless otherwise clearly stated, it may cover the cases where the layers, structures, and components are directly in contact with each other, or there may be one or more intermediate media or other layers, structures, and components between the layers, structures, and components. The following text may also use terms such as "first" and "second", but this is mainly to distinguish between elements or operations described with the same terms, rather than to limit the order or sequence of elements or operations.

Please refer to Figures 1 to 8. Figure 1 is a three-dimensional schematic diagram of a preferred embodiment of the new seat. Figure 2 is a decomposed schematic diagram of a preferred embodiment of the seat adjustment device. Figure 3 is a cross-sectional schematic diagram of the new outer sleeve moving away from the bracket. Figure 4 is a cross-sectional schematic diagram of the new latch forming an interference state. Figure 5 is a partial enlarged schematic diagram of Figure 4. Figure 6 is a cross-sectional schematic diagram of the new latch leaving the interference state. Figure 7 is a cross-sectional schematic diagram of the new outer sleeve moving toward the bracket. Figure 8 is a cross-sectional schematic diagram of the new latch forming an interference state again.

As shown in Figure 1, the new chair includes a chair backrest 1, a chair seat cushion 2 and a seat adjustment device. The seat adjustment device is suitable for adjusting the relative position between the chair backrest 1 and the chair seat cushion 2.

As shown in Figures 2 to 5, the seat positioning device includes: a bracket 3, an outer sleeve 4, a main spring 5, a shaft 6 and a locking mechanism 7. The bracket 3 has a plurality of positioning slots 30 and is connected to the chair back 1. The bracket 3 defines an axial direction.

The inner diameter of the outer sleeve 4 fits with the outer diameter of the bracket 3, and the outer sleeve 4 can slide along the axial direction of the bracket 3. The outer sleeve 4 is connected to the seat cushion 2 and has a through hole.

The main spring 5 is located in the bracket 3 and is buckled with the bracket 3 at one end. The main spring 5 is in a stretched state. As shown in Figure 2, the bracket has two hooks 32, which are respectively located on opposite sides of the bracket 3 in the radial direction. The two hooks 32 provide buckling for the two ends of the main spring 5.

The shaft 6 is located inside the bracket 3 and the outer sleeve 4, and the shaft 6 can move along the axial direction of the bracket 3 as the outer sleeve 4 moves. One end 60 of the shaft 6 abuts against the main spring 5, and the other end of the shaft 6 abuts against the end of the outer sleeve 4.

The locking mechanism 7 is arranged on the outer diameter of the outer sleeve 4 and has a latch 70. The latch is located in the through hole of the outer sleeve 4, and the latch 70 can be inserted into any positioning groove 30 of the bracket 3 to form an interference state. The locking mechanism has a handle 72. The handle 72 has an open state (as shown in Figure 6) and a snap-on state (as shown in Figures 4, 5, and 8). When the handle 72 is in the snap-on state, the handle 72 links the latch 70 so that the latch 70 is selectively inserted into any of the plurality of positioning grooves 30 on the bracket 3 to form the interference state, thereby limiting the locking mechanism 7 to be positioned on the bracket 3. When the handle 70 is in the open and closed state, the latch 72 withdraws from the plurality of positioning grooves 30, thereby causing the latch 72 to escape from the interference state.

As shown in Figure 7, when the outer sleeve 4 moves toward the bracket 3, the outer sleeve 4 drives the shaft 6 to move toward the bracket 3, and the end 60 of the shaft 6 abuts against the main spring 5, so that the main spring 5 enters a tension state, and can cooperate with the pin of the locking mechanism 7 to be inserted into any positioning groove 30 of the bracket 3 to form an interference state (as shown in Figure 8).

When the latch is withdrawn from the positioning slot 30 (as shown in FIG. 6 ), the main spring 5 will rebound due to the tension state, thereby causing the outer sleeve 4 to move away from the bracket 3 (as shown in FIG. 3 ). Therefore, the user can adjust the relative position between the chair back 1 and the seat cushion 2 by moving the outer sleeve 4 toward the bracket 3 or away from the bracket 3 .

In addition, the seat adjustment device has an auxiliary spring 8. The auxiliary spring 8 is sleeved on the outer diameter of the shaft 6, and the auxiliary spring 8 provides elastic force for the outer sleeve 4 to move away from the bracket 3.

In addition, the seat adjustment device has a bushing 9. The bushing 9 is sleeved on the bracket 3. The bushing 9 has a through hole 90 and a plurality of ribs 92. The through hole 90 allows the shaft 6 to pass through. The plurality of ribs 92 are formed on the surface of the bushing 9 to reduce friction when the outer sleeve 4 slides on the surface of the bushing 9. One end of the auxiliary spring 8 rests on the bushing 9.

In the above embodiment, the seat adjustment device has the auxiliary spring 8 and the lining 9, but the user can remove the auxiliary spring 8 and the lining 9 according to his/her needs (as shown in Figure 9).

Although the embodiments of the present invention are disclosed as described above, they are not intended to limit the present invention. Anyone familiar with the relevant technology can make some changes to the shape, structure, features and spirit described in the scope of application of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope of the patent application attached to this specification.

1: Chair back

2: Chair cushion

3: Bracket

30: Positioning slot

4: Outer sleeve

5: Main spring

6: Axis rod

7: Locking mechanism

8: Auxiliary spring

9: Lining

Claims (9)

A seat adjustment device, suitable for adjusting the relative position between a chair backrest and a chair seat cushion, the seat positioning device comprises: A bracket having a plurality of positioning slots, and the bracket is connected to the chair back, and the bracket defines an axial direction; An outer sleeve, and the inner diameter of the outer sleeve is fitted into the outer diameter of the bracket, and the outer sleeve can slide relative to the bracket along the axis of the bracket, the outer sleeve is connected to the chair cushion, and the outer sleeve has a through hole; A main spring is accommodated in the bracket and is buckled to the bracket at one end, and the main spring is in a stretched state; A shaft is accommodated in the bracket and the outer sleeve, and the shaft can be linked with the outer sleeve and move relative to the bracket along the axis of the bracket, one end of the shaft abuts the main spring, and the other end of the shaft abuts the end of the outer sleeve; A locking mechanism is arranged on the outer diameter of the outer sleeve, and the locking mechanism has a latch, and the latch is accommodated in the through hole of the outer sleeve, and the latch is inserted into any of the plurality of positioning grooves on the bracket to form an interference state; When the outer sleeve moves toward the bracket, the outer sleeve links the shaft to move the shaft toward the bracket, so that the main spring is in the stretched state, and the latch of the locking mechanism can be inserted into any of the plurality of positioning grooves on the bracket to form the interference state, thereby fixing the relative position between the chair back and the chair seat; when the latch withdraws from the plurality of positioning grooves, the main spring rebounds from the stretched state to move the outer sleeve away from the bracket; thus, the seat adjustment device provides adjustment of the relative position of the chair back and the chair seat by the outer sleeve moving toward the bracket or the outer sleeve moving away from the bracket. The seat adjustment device as described in claim 1, wherein the bracket has two hooks, the two hooks are respectively located on opposite sides of the bracket in the radial direction, and the two hooks provide two ends of the main spring for buckling. The seat adjustment device as described in claim 1, wherein the locking mechanism has a handle, and the handle has an open state and a locked state. When the handle is in the locked state, the handle links the latch so that the latch selectively inserts into any of the plurality of positioning grooves on the bracket to form the interference state, thereby limiting the locking mechanism to be positioned on the bracket; when the handle is in the open and closed state, the latch withdraws from the plurality of positioning grooves, thereby allowing the latch to escape from the interference state. A seat adjustment device as described in claim 1, wherein the seat adjustment device has an auxiliary spring, the auxiliary spring is sleeved on the outer diameter of the shaft, and the auxiliary spring provides elastic force for the outer sleeve to move away from the bracket. A seat adjustment device as described in claim 1, wherein the seat adjustment device has a sleeve, and the sleeve is sleeved on the bracket. A seat adjustment device as described in claim 5, wherein the lining has a plurality of ribs formed on the surface of the lining to reduce friction when the outer sleeve slides on the surface of the lining. A seat adjustment device as described in claim 5, wherein the bushing has a through hole, and the through hole provides a passage for the shaft. A seat adjustment device as described in claim 5, wherein the seat adjustment device has an auxiliary spring, the auxiliary spring is sleeved on the outer diameter of the shaft, the auxiliary spring provides elastic force for the outer sleeve to move away from the bracket, and one end of the auxiliary spring abuts against the bushing. A chair comprising: A chair back; a chair cushion; and A seat adjustment device as described in any one of claims 1 to 5.

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