Dynamic chassis capable of switching states

Abstract

The utility model provides a dynamic chassis capable of switching states, which comprises an upper shell and a lower shell, the upper shell and the lower shell are rotationally connected through a swinging rotating shaft arranged in the front-back direction, a locking piece is arranged on the upper shell and is arranged on the upper shell in a sliding manner, a groove part and a blocking part are arranged on the lower shell, the locking piece is provided with a locking part, and the locking part is provided with a locking groove. The locking piece slides on the upper shell so that the locking part can be switched between the groove part and the locking part. The dynamic chassis has a locking state and an unlocking state, in the locking state, the locking piece slides to enable the locking part to be located at the blocking part, and the locking part abuts against the blocking part to prevent the upper shell from rotating leftwards and rightwards relative to the lower shell; in the unlocking state, the locking piece slides to enable the locking part to be located at the groove part, and the groove part avoids the locking part so that the upper shell can rotate left and right relative to the lower shell. And the dynamic state and the static state of the seat part are effectively switched, so that a user is prevented from feeling fatigue, the use comfort is improved, and the health problem is also prevented.

Description

Technical Field

[0001] This utility model relates to the field of furniture, and in particular to a dynamic chassis with switchable states. Background Technology

[0002] As people's living standards and working conditions improve, the demand for office chairs is increasing, and the corresponding requirements are also getting higher. In modern office chairs, the chassis is an indispensable and important component. The chassis generally integrates multiple functions, such as gas spring height adjustment and backrest tilt adjustment.

[0003] There is a type of chassis that allows the seat to swing dynamically from side to side, making it more comfortable for users to sit and allowing for more flexible posture changes, which is very popular with consumers. However, this type of chassis has no locking capability for its left and right dynamic swing, so the seat can always swing from side to side. It is difficult for users to even maintain a horizontal sitting position for a short time, let alone maintain a horizontal sitting position for a long time like a traditional chair. Due to the shortcomings of this non-locking dynamic chassis, it not only loses the user group who prefer the sitting experience of a regular chair, but also causes users to feel tired after a long time of dynamic swinging, reducing comfort and causing health problems. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a dynamic chassis with switchable states. The upper and lower shells can rotate left and right through a swing shaft. At the same time, the locking part sliding on the upper shell switches between the groove and the blocking part on the lower shell to switch between locking and unlocking states. Thus, when sitting, the seat can swing left and right dynamically, and can also stably support the human body like a traditional seat.

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

[0006] A switchable dynamic chassis includes an upper housing and a lower housing, which are rotatably connected by a swing shaft arranged in the front-rear direction. The upper housing is provided with a locking member that is slidably disposed on the upper housing. The lower housing is provided with a groove and a blocking part. The locking member has a locking part, and the locking member slides on the upper housing to switch the locking part between the groove and the locking part. The dynamic chassis has a locked state and an unlocked state. In the locked state, the locking member slides to the position of the locking part at the blocking part, and the locking part abuts against the blocking part to prevent the upper housing from rotating left or right relative to the lower housing. In the unlocked state, the locking member slides to the position of the locking part at the groove, and the groove avoids the locking part, allowing the upper housing to rotate left or right relative to the lower housing.

[0007] The dynamic chassis achieves left-right swinging unlocking and locking through different interactions between the locking element and the groove. The structure is simple: when the locking element is in the blocking part, the locking part abuts against the blocking part, preventing the upper and lower housings from rotating; when the locking part is in the groove, the upper housing rotates, allowing the locking part to enter the groove. In the locked state, it functions like a traditional seat, allowing the user to maintain a horizontal sitting posture. In the unlocked state, the seat can swing left and right dynamically, allowing the user to switch sitting positions at will. This locking dynamic chassis makes use more flexible, effectively switching between dynamic and static seating positions, preventing user fatigue, increasing comfort, and preventing health problems.

[0008] Preferably, an operating lever is slidably mounted on the upper housing. The operating lever has a transmission component connected to a locking component. The operating lever is configured such that when it slides on the upper housing, it drives the transmission component to move the locking component. The locking component is located within the upper and lower housings, and its sliding is driven by the operating lever.

[0009] Preferably, the transmission component is a torsion spring, which is sleeved on the operating lever. Limiting protrusions are provided on both sides of the operating lever along the sliding direction of the torsion spring. The torsion spring is elastic; even if the upper and lower housings are relatively tilted, and the locking part cannot immediately switch to the blocking part, the operating lever can be slid first, allowing the torsion spring to pre-apply a sliding force to the locking part. When the upper housing returns to a horizontal position relative to the lower housing, and the locking part emerges from the groove, the locking part slides due to the force of the torsion spring, causing the locking part to switch to the blocking part, thus achieving delayed locking. Therefore, alignment is not required before switching from the unlocked to the locked state, making the delayed locking method more ingenious.

[0010] Preferably, the operating lever is provided with an anti-rotation protrusion, and the upper housing is provided with a corresponding anti-rotation groove; a torsion spring is disposed beside the anti-rotation protrusion, and one of the spring arms of the torsion spring is inserted into the anti-rotation protrusion. The anti-rotation protrusion and the anti-rotation groove restrict the relative rotation between the operating lever and the upper housing, so that the operating lever can only slide relative to the upper housing, and the anti-rotation protrusion can also be used to connect the torsion spring.

[0011] Preferably, the control lever is equipped with a shift spring, which includes a locking gear slot and an unlocking gear slot, spaced apart along the sliding direction of the control lever. The upper housing has a gear protrusion. In the locked state, the gear protrusion is located in the locking gear slot and remains there under the elastic force of the shift spring. In the unlocked state, the gear protrusion is located in the unlocking gear slot and remains there under the elastic force of the shift spring. The shift spring is elastic, allowing it to pass over the gear protrusion when the user applies a pushing or pulling force to the control lever, thus shifting the gear protrusion between the unlocking and locking gear slots. When the gear protrusion is in either gear slot, it prevents accidental operation of the control lever, maintaining the dynamic chassis state even when the control lever is not under force or experiences minimal force.

[0012] Preferably, the lower housing includes a front side plate, with a groove and a blocking portion located at the upper end of the front side plate; the locking member also has a plate body located behind the front side plate, with the locking portion protruding from the plate body towards the front side plate. The plate body does not overlap with the front side plate, so it will not affect the left and right swinging of the upper housing; only the forward-protruding locking portion has a locking effect; moreover, only a groove portion needs to be provided on the front side plate, and the blocking portion is part of the front side plate body, resulting in a simple structure.

[0013] Preferably, the upper housing includes a fixed base located inside it, and a locking member is slidably disposed on the lower end face of the fixed base. A sliding groove is formed on the locking member, and a sliding limiting member passes through the sliding groove, which slides the locking member onto the lower end face of the fixed base. The upper housing needs a fixed base for the locking member to slide, maintaining the locking member at a suitable height relative to the lower housing to achieve the function of switching the locking member's state.

[0014] Preferably, the locking member has at least two locking portions, which are arranged spaced apart from each other. Multiple locking portions provide better locking stability, increase strength, prevent damage, and extend service life.

[0015] Preferably, at least two buffer springs are provided between the upper and lower housings, with the two buffer springs respectively located on the left and right sides of the swing shaft. The buffer springs can provide cushioning when the upper housing swings left and right relative to the lower housing, thereby improving comfort.

[0016] Preferably, the upper housing is provided with a seat connector, and a tilting shaft is provided between the seat connector and the upper housing. The seat connector is mounted on the upper housing by rotating back and forth via the tilting shaft. In addition to swinging left and right, the seat connected to the chassis can also tilt back and forth, further enhancing its dynamic capabilities.

[0017] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows:

[0018] The dynamic chassis achieves left-right swinging unlocking and locking through different interactions between the locking element and the groove. The structure is simple: when the locking element is in the blocking part, the locking part abuts against the blocking part, preventing the upper and lower housings from rotating; when the locking part is in the groove, the upper housing rotates, allowing the locking part to enter the groove. In the locked state, it functions like a traditional seat, allowing the user to maintain a horizontal sitting posture. In the unlocked state, the seat can swing left and right dynamically, allowing the user to switch sitting positions at will. This locking dynamic chassis makes use more flexible, effectively switching between dynamic and static seating positions, preventing user fatigue, increasing comfort, and preventing health problems. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the dynamic chassis in an embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a three-dimensional structural diagram of the dynamic chassis in an embodiment of the present invention. Figure 2 ;

[0021] Figure 3 This is an exploded view of the dynamic chassis in an embodiment of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the upper and lower shells in an embodiment of the present invention;

[0023] Figure 5 This is a cross-sectional view of the dynamic chassis of this utility model in an embodiment;

[0024] Figure 6 This is a three-dimensional structural diagram of the locking member located in the groove of the front side plate in an embodiment of the present invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the fixed base above the base in an embodiment of the present invention;

[0026] Figure 8 This is a three-dimensional structural diagram of the present invention in which the operating lever and locking component are mounted on the fixed base in an embodiment;

[0027] Figure 9 This is a three-dimensional structural diagram of the upper shell in an embodiment of the present invention;

[0028] Figure 10 This is a three-dimensional structural diagram of the lower shell in an embodiment of the present invention;

[0029] Figure 11 This is a three-dimensional structural diagram of the operating lever in an embodiment of the present invention;

[0030] Figure 12 This is a three-dimensional structural diagram of the fixing base in the embodiment of the present invention;

[0031] Figure 13 This is a three-dimensional structural diagram of the locking component in an embodiment of the present invention.

[0032] The reference numerals in the attached drawings are as follows: upper housing 1; front end plate 101; lower housing 2; front side plate 201; swing pivot 3; locking component 4; locking part 41; plate 42; groove part 5; blocking part 6; seat connecting part 7; tilt pivot 8; buffer spring 9; fixed seat 10; sliding groove 11; sliding limit component 12; operating lever 13; rod 131; sleeve 132; transmission component, torsion spring 14; limit protrusion 15; anti-rotation protrusion 16; anti-rotation groove 17; shift spring 18; locking gear slot 19; unlocking gear slot 20; gear protrusion 21. Detailed Implementation

[0033] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0035] In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] The specific implementation of this utility model is as follows:

[0037] like Figure 4-7As shown, this utility model provides a switchable dynamic chassis, including an upper shell 1 and a lower shell 2, which are rotatably connected by a swing shaft 3 arranged in the front-rear direction. The upper shell 1 is provided with a locking member 4, which is slidably disposed on the upper shell 1. The lower shell 2 is provided with a groove 5 and a blocking part 6. The locking member 4 has a locking part 41, which slides on the upper shell 1 to switch between the locking part 41 and the blocking part 6. The dynamic chassis has a locked state and an unlocked state. In the locked state, the locking member 4 slides to the position of the locking part 41 at the blocking part 6, and the locking part 41 abuts against the blocking part 6 to prevent the upper shell 1 from rotating left and right relative to the lower shell 2. In the unlocked state, the locking member 4 slides to the position of the locking part 41 at the groove 5, and the groove 5 avoids the locking part 41, allowing the upper shell 1 to rotate left and right relative to the lower shell 2.

[0038] The dynamic chassis can be unlocked and locked by different interactions between the locking member 4, the groove 5, and the locking part 41, allowing it to swing left and right. The structure is simple. When the locking member 4 is in the blocking part 6, the locking part 41 abuts against the blocking part 6, preventing the upper shell 1 and the lower shell 2 from rotating. When the locking part 41 is in the groove 5, the upper shell 1 rotates, allowing the locking part 41 to enter the groove 5. In the locked state, it is no different from a traditional seat, allowing the user to maintain a horizontal sitting posture. In the unlocked state, the seat can swing left and right, allowing the user to switch sitting positions at will. This locking dynamic chassis makes the use more flexible, effectively switching between dynamic and static seating, preventing user fatigue, increasing user comfort, and preventing health problems.

[0039] Specifically, such as Figure 1-4 As shown, the lower housing 2 can also be used to connect the gas spring of the seat. Therefore, the lower housing 2 remains fixed in the seat. The upper housing 1 is also provided with a seat connector 7, which is used to connect the seat. A tilting shaft 8 is provided between the seat connector 7 and the upper housing 1. The tilting shaft 8 is arranged in the left and right direction. The seat connector 7 is mounted on the upper housing 1 by rotating back and forth through the tilting shaft 8, so that the seat connected to the chassis can tilt back and forth in addition to swinging left and right, further improving the dynamic capability. The lower housing 2 and the upper housing 1 are rotatably connected by two swing shafts 3. One swing shaft 3 is inserted into the front side plate 201 of the lower housing 2 and the front end plate 101 of the upper housing 1, and the other swing shaft 3 is inserted into the rear side plate of the lower housing 2 and the rear end plate of the upper housing 1. Two buffer springs 9 are also provided between the lower housing 2 and the upper housing 1. The two buffer springs 9 are respectively located on the left and right sides of the swing shaft 3. The buffer springs 9 can provide cushioning when the upper housing 1 swings left and right relative to the lower housing 2, so as to improve comfort.

[0040] like Figure 8-10As shown in Figure 13, the upper housing 1 includes a fixed seat 10 located inside it. The fixed seat 10 is fixedly mounted on the front end plate 101 of the upper housing 1, and the locking member 4 is slidably mounted on the lower end surface of the fixed seat 10. The groove portion 5 and the blocking portion 6 are located on the upper end of the front side plate 201 of the lower housing 2. The locking member 4 also has a plate body 42, which is located behind the front side plate 201. The locking portion 41 protrudes from the plate body 42 toward the front side plate 201. The plate body 42 does not overlap with the front side plate 201 and will not affect the left and right swing of the upper housing 1. Only the forward-protruding locking portion 41 has a locking effect. Moreover, only the groove portion 5 needs to be provided on the front side plate 201, and the blocking portion 6 is part of the body of the front side plate 201. The structure is simple; the locking member 4 has two sliding grooves 11, which are arranged in the left and right direction and are spaced apart; each sliding groove 11 has a sliding limit member 12, which slides the locking member 4 onto the lower end face of the fixed base 10; the upper housing 1 needs a fixed base 10 for the locking member 4 to slide, and maintain the locking member 4 at a suitable height relative to the lower housing 2 to realize the function of switching the state of the locking member 4; the sliding limit member 12 is a bolt, which passes through the sliding groove 11 and locks on the fixed base 10, and the diameter of the bolt head is larger than the groove diameter of the sliding groove 11, so as to keep the locking member 4 below the fixed base 10 and prevent it from falling off.

[0041] Furthermore, the locking member 4 has at least two locking parts 41, which are arranged at intervals from left to right. Correspondingly, the front side plate 201 of the lower housing 2 also has two sets of grooves 5 and blocking parts 6. The grooves 5 and blocking parts 6 in the same set are adjacent to each other, and the grooves 5 are located on the left side of the blocking parts 6. Multiple locking parts 41 can provide good locking stability, increase strength, prevent damage, and improve service life.

[0042] Furthermore, such as Figure 4 , 6As shown in Figures 8 and 11, an operating rod 13 is slidably mounted on the upper housing 1. The operating rod 13 is inserted into the upper housing 1 in the left-right direction and simultaneously inserted into the fixed seat 10 inside the upper housing 1. A transmission component 14 is provided on the operating rod 13, which is connected to the locking component 4. The operating rod 13 is configured such that when it slides on the upper housing 1, it drives the transmission component 14 to drive the locking component 4 to slide. The locking component 4 is located inside the upper housing 1 and the lower housing 2, and its sliding is driven by the operating rod 13. The transmission component 14 is a torsion spring 14, which is sleeved on the operating rod 13. Along the sliding direction of the operating rod 13, the operating rod 13 has limiting protrusions 15 on both sides of the torsion spring 14. Specifically, the operating rod 13 includes a rod 131 as the main body and a sleeve 132 sleeved on the end of the rod 131. One end of the rod 131 protrudes outward from the upper housing. The upper housing 1 and lower housing 2 are for user operation. The other end of the rod 131 is fitted with the sleeve 132 and inserted into the upper housing 1 and the fixed base 10. The limiting protrusion 15 is formed on the sleeve 132, and the torsion spring 14 is also fitted on the sleeve 132 and located between the two limiting protrusions 15. The torsion spring 14 is elastic. Even if the upper housing 1 and lower housing 2 are relatively tilted, and the locking part 41 cannot immediately switch to the blocking part 6, the operating rod 13 can slide first, so that the torsion spring 14 gives the locking part 4 a sliding force in advance. When the upper housing 1 returns to the horizontal relative to the upper housing 2 and the locking part 41 comes out from the groove part 5, the locking part 4 slides due to the force of the torsion spring 14, so that the locking part 41 switches to the blocking part 6, thereby achieving delayed locking. Therefore, it is not necessary to align before switching from the unlocked state to the locked state. The delayed locking method is more ingenious.

[0043] In addition, such as Figure 6 , 11As shown in Figure 12, the operating lever 13 is provided with an anti-rotation protrusion 16, specifically disposed on the sleeve 132, and the upper housing 1 is provided with a corresponding anti-rotation groove 17, specifically disposed on the fixed seat 10; the torsion spring 14 is disposed beside the anti-rotation protrusion 16, and one of the spring arms of the torsion spring 14 is inserted into the anti-rotation protrusion 16; the anti-rotation protrusion 16 and the anti-rotation groove 17 restrict the relative rotation of the operating lever 13 and the upper housing 1, so that the operating lever 13 can only slide relative to the upper housing 1, and the anti-rotation protrusion 16 can also be used to connect the torsion spring 14; the operating lever 13 is provided with a shift spring 18, which is specifically disposed on the sleeve 132, and there is a hollow space between the shift spring 18 and the sleeve 132 to realize its elastic deformation capability; the shift spring 18 includes a locking gear groove 19 and an unlocking gear groove 20, which are arranged at intervals along the sliding direction of the operating lever 13; the upper housing 1 is provided with a gear protrusion 21. The gear shift protrusion 21 is arc-shaped. In the locked state, the gear shift protrusion 21 is located in the locking gear shift groove 19 and is held in the locking gear shift groove 19 by the elastic force of the shift spring 18. In the unlocked state, the gear shift protrusion 21 is located in the unlocking gear shift groove 20 and is held in the unlocking gear shift groove 20 by the elastic force of the shift spring 18. The shift spring 18 is elastic. When the user applies a pushing or pulling force to the operating lever 13, the shift spring 18 can pass over the gear shift protrusion 21, allowing the gear shift protrusion 21 to switch between the unlocking gear shift groove 20 and the locking gear shift groove 19. When the gear shift protrusion 21 is located in any gear shift groove, it can prevent the operating lever 13 from being misoperated, that is, when the operating lever 13 is not under force or under a small force, it maintains the current state of the dynamic chassis. It also provides feedback to the user on gear shifting, so that the user can know whether he has successfully completed the locking and unlocking switch.

Claims

1. A dynamic chassis with switchable states, characterized in that: The system includes an upper housing and a lower housing, which are rotatably connected by a swing shaft arranged in the front-to-back direction. The upper housing is provided with a locking member that is slidably mounted on the upper housing. The lower housing is provided with a groove and a blocking part. The locking member has a locking part, and the locking member slides on the upper housing to switch between the locking part and the blocking part. The dynamic chassis has a locked state and an unlocked state. In the locked state, the locking member slides to the blocking part, and the locking part abuts against the blocking part to prevent the upper housing from rotating left or right relative to the lower housing. In the unlocked state, the locking member slides to the groove, and the groove avoids the locking part, allowing the upper housing to rotate left or right relative to the lower housing.

2. The switchable dynamic chassis according to claim 1, characterized in that: An operating lever is also slidably mounted on the upper housing. The operating lever is equipped with a transmission component, which is connected to a locking component. The operating lever is configured such that when it slides on the upper housing, it drives the transmission component to cause the locking component to slide.

3. The switchable dynamic chassis according to claim 2, characterized in that: The transmission component is a torsion spring, which is sleeved on the operating lever. Along the sliding direction of the operating lever, there are limiting protrusions on both sides of the torsion spring.

4. The switchable dynamic chassis according to claim 3, characterized in that: The operating lever is provided with an anti-rotation protrusion, and the upper housing is provided with a corresponding anti-rotation groove; a torsion spring is provided on the side of the anti-rotation protrusion, and one of the spring arms of the torsion spring is inserted into the anti-rotation protrusion.

5. The switchable dynamic chassis according to claim 2, characterized in that: The operating lever is equipped with a shift spring, which includes a locking gear slot and an unlocking gear slot. The locking gear slot and the unlocking gear slot are arranged at intervals along the sliding direction of the operating lever. The upper housing is equipped with a gear protrusion. In the locked state, the gear protrusion is located in the locking gear slot and is kept in the locking gear slot by the elastic force of the shift spring. In the unlocked state, the gear protrusion is located in the unlocking gear slot and is kept in the unlocking gear slot by the elastic force of the shift spring.

6. The switchable dynamic chassis according to claim 1, characterized in that: The lower housing includes a front side plate, with a recess and a blocking portion located at the upper end of the front side plate; the locking member also has a plate body located behind the front side plate, with the locking portion protruding from the plate body toward the front side plate.

7. The switchable dynamic chassis according to claim 1, characterized in that: The upper housing includes a fixed base located inside it, and a locking member is slidably disposed on the lower end surface of the fixed base; a sliding groove is provided on the locking member, and a sliding limiting member passes through the sliding groove, and the sliding limiting member slides the locking member onto the lower end surface of the fixed base.

8. The switchable dynamic chassis according to claim 1, characterized in that: The locking member has at least two locking parts, which are arranged at a distance from each other on the left and right.

9. The switchable dynamic chassis according to claim 1, characterized in that: At least two buffer springs are provided between the upper and lower housings, and the two buffer springs are respectively located on the left and right sides of the swing shaft.

10. The switchable dynamic chassis according to claim 1, characterized in that: The upper housing is provided with a seat connector, and a tilting shaft is provided between the seat connector and the upper housing. The seat connector is mounted on the upper housing by rotating back and forth through the tilting shaft.

Images