Seat

Abstract

The utility model discloses a chair. The chair comprises chair legs, the chair body comprises a seat body and a connecting seat, the seat body is arranged at the tops of the chair legs, the connecting seat is arranged at the bottom of the seat body, and a connecting cavity is concavely formed in the connecting seat; the chair back comprises a backrest assembly and a connecting framework; the connecting framework is provided with a connecting end, and the connecting end is detachably inserted into the connecting cavity of the connecting seat; the backrest assembly is arranged on the connecting framework; a locking hole penetrates through the bottom surface of the connecting cavity; a fixing hole is formed in the connecting end; the seat further comprises fasteners, and the fasteners penetrate through the locking holes and the fixing holes at the same time. According to the scheme, the disassembly and assembly process is convenient and fast, only the connecting end needs to be inserted into the connecting cavity, the locking hole and the fixing hole can be accurately aligned and communicated, the fastening piece is arranged in the locking hole and the fixing hole in a penetrating mode at the same time, so that the connecting end and the connecting base can be tightly connected, larger external force and vibration can be borne, and the service life of the connecting base is prolonged. Therefore, the connection between the connecting end and the connecting seat is more stable, and the situation that the chair back easily shakes and even falls off is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of seat, especially to a seat capable of preventing the chair back from shaking or even falling off. BACKGROUND

[0002] Some existing seats are complicated to install, so some installation methods are adopted, for example, a buckle type connection scheme, that is, the connection between the chair back and the chair body is realized by a buckle structure, so that the preliminary splicing can be completed without the aid of tools. This method simplifies the installation process to a certain extent, reduces the dependence on tools, and is easier for ordinary users to use, but the installation method through the buckle structure has obvious shortcomings. Specifically, the tightness and stability of the connection between the chair back and the chair body are limited. After long-term use, the buckle structure is prone to looseness due to the frequent activities of the user and the effect of external force, resulting in the chair back shaking or even falling off. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the utility model embodiment provides a seat.

[0004] The utility model solves the technical problems by adopting the following technical scheme:

[0005] A seat, comprising:

[0006] A chair leg;

[0007] A chair body comprising a seat body and a connecting seat, the seat body being arranged on the top of the chair leg, the connecting seat being arranged on the bottom of the seat body, and the connecting seat being concave with a connecting cavity;

[0008] A chair back comprising a backrest assembly and a connecting framework, the connecting framework being provided with a connecting end, the connecting end being detachably inserted into the connecting cavity of the connecting seat, and the backrest assembly being arranged on the connecting framework;

[0009] The bottom surface of the connecting cavity is penetrated by a locking hole, the connecting end is provided with a fixing hole for corresponding communication with the locking hole, and the seat further comprises a fastener, the fastener being simultaneously penetrated by the locking hole and the fixing hole to fix the connecting end.

[0010] As a preferred technical scheme of the utility model, the fastener is a bolt, and the fixing hole is a threaded hole.

[0011] As a preferred technical scheme of the utility model, the outer side of the fastener is sleeved with a gasket.

[0012] As a preferred technical scheme of the utility model, the outer side of the fastener is further sleeved with an elastic sleeve.

[0013] As a preferred technical scheme of the utility model, one end of the fastener is provided with a hand twisting part.

[0014] As a preferred technical scheme of the utility model, the connecting framework comprises a support rod and a connecting rod, the connecting end is arranged at one end of the support rod, and the connecting rod is arranged at the other end of the support rod.

[0015] The backrest assembly is arranged on the connecting rod.

[0016] As a preferred technical scheme of the utility model, the backrest assembly comprises at least two symmetrically arranged backrest plates and connecting parts, each connecting part is connected with each backrest plate, and each connecting part is arranged on the outer side of the connecting rod.

[0017] As a preferred technical scheme of the utility model, the end face of each backrest plate away from the connecting part is formed with a curved surface for fitting the back of a human body.

[0018] As a preferred technical scheme of the utility model, the outer side of the support rod is sleeved with a protective sleeve.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] When the connecting end is inserted into the connecting cavity, the locking hole and the fixing hole can be accurately aligned and communicated, the fastener is arranged in the locking hole and the fixing hole at the same time, the connecting end and the connecting seat can be tightly connected, compared with the installation mode of the buckle structure, the dismounting process of the utility model is more convenient, and the utility model can bear greater external force and vibration, so that the connecting end and the connecting seat are more stably connected, and the chair back is prevented from shaking or even falling off. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the utility model embodiment, the drawings needed in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is the overall structural diagram of the utility model embodiment.

[0023] Figure 2 It is the structural explosion diagram of the utility model embodiment.

[0024] Figure 3 It is Figure 2An enlarged view of a portion A.

[0025] Figure 4 is a structure explosion view of the connecting seat and the fastener of the embodiment of the utility model.

[0026] Figure 5 is a structure view of the fastener of the embodiment of the utility model.

[0027] Reference numerals in the drawings

[0028] 1, chair leg;

[0029] 2, chair body; 21, seat body; 22, connecting seat; 221, connecting cavity; 222, locking hole;

[0030] 3, chair back; 31, backrest assembly; 311, backrest plate; 312, connecting part; 32, connecting framework; 321, support rod; 322, connecting rod; 323, protective sleeve; 3221, connecting end; 33, fastener; 331, gasket; 332, elastic sleeve; 333, hand twisting part. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical schemes and beneficial effects to be solved in the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments.

[0032] It should be understood that the specific embodiments described herein are merely intended to explain the present application, and are not intended to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element.

[0034] When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or creating a relative importance or an indicated number of the technical features being described. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features.

[0037] In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0038] In order to solve the technical problem that the chair back and the chair body are connected through the buckle structure in the prior art, which is prone to cause the chair back to shake or even fall off after long-term use due to the frequent activities of the user and the influence of external force, embodiments of the present application provide a seat.

[0039] The specific structure of the seat provided by the embodiments of the present application will be described in detail below. According to the specific structure of the seat shown in the accompanying drawings, the specific structure of the seat comprises a chair leg 1, a chair body 2 and a chair back 3. Figures 1-5

[0040] The chair leg 1 is used to bear the weight of the chair body 2 and the human body sitting on the chair body 2, as well as the weight of other objects that can be placed on the chair body 2, and evenly transmits the weight to the ground to support, so that the entire seat can be stably stood on the ground, and the user can safely and comfortably sit.

[0041] In addition, a roller can be installed on the chair leg 1, so that the chair leg 1 can be conveniently moved between different positions, improving the flexibility and convenience of the entire seat, and being particularly suitable for scenes that need to frequently change working positions or activity ranges.

[0042] According to the specific structure of the seat shown in the accompanying drawings, the chair body 2 comprises a seat body 21 and a connecting seat 22. Figure 2

[0043] Specifically, the seat body 21 is arranged on the top of the chair leg 1, and is stably installed on the chair leg 1, so that the chair leg 1 can provide stable support for the seat body 21, and ensure that the seat body 21 can bear the weight of the human body when the user sits on the seat body 21, and is difficult to shake or displace. The connecting seat 22 is arranged on the seat body 21 and serves as an intermediate component for connecting the seat body 21 and the chair back 3, which is connected with the connecting framework 32, and helps to disperse the pressure from the chair back 3 and the user, so that the seat body 21 can more stably bear various forces.

[0044] According to the specific structure of the seat shown in the accompanying drawings, the chair back 3 comprises a back body 31 and a connecting framework 32. Figure 2 ​​As shown, the chair back 3 comprises a backrest assembly 31 and a connecting framework 32; the connecting framework 32 is provided with a connecting end 3221 which is detachably connected to the connecting seat 22; the backrest assembly 31 is arranged on the connecting framework 32.

[0045] Specifically, the connecting framework 32 plays a supporting role for the backrest assembly 31, ensuring that the backrest assembly 31 will not deform or collapse when bearing the pressure of the user's back, thereby playing a role in providing stable back support for the user. By effectively transmitting the human pressure borne by the backrest assembly 31 to the connecting seat 22, and then dispersing it to the ground through the seat body 21 and the chair leg 1, it is ensured that the overall structure of the seat can bear and reasonably disperse the pressure from the user, maintaining the stability and safety of the seat.

[0046] Since the connecting end 3221 is detachably connected to the connecting seat 22, that is, the connecting position with the connecting seat 22 is clearly defined by the connecting end 3221 of the connecting framework 32, the assembly between the chair body 2 and the chair back 3 is more accurate and convenient, and it can be ensured that the correct relative position and angle relationship between the backrest assembly 31 and the seat body 21 is maintained during installation, which can improve the precision and convenience of the two during assembly, thereby solving the problems of complexity and low efficiency during installation of the chair body 2 and the chair back 3.

[0047] In addition, if a part or component of the chair back 3 is damaged, by detaching the backrest assembly 31 together with the connecting framework 32 from the chair body 2, only the damaged component needs to be repaired or replaced, without the need to disassemble the entire seat, thereby improving the maintenance efficiency on the one hand, and reducing the maintenance cost on the other hand.

[0048] According to Figure 2 and Figure 3 As shown, in some specific embodiments, the connecting seat 22 is concavely provided with a connecting cavity 221, and the connecting end 3221 is detachably inserted into the connecting cavity 221 of the connecting seat 22.

[0049] Specifically, since the shape of the connecting end 3221 matches the shape of the connecting cavity 221 on the connecting seat 22, which can be understood as a cylinder, a cuboid, etc., to achieve a tight fit, this shape matching ensures that the connecting end 3221 can be accurately and correctly inserted into the connecting cavity 221, and after insertion, it can provide stable support and positioning in all directions, preventing the connecting end 3221 from shaking or shifting in the connecting cavity 221.

[0050] According to Figures 2-4As shown, in a further embodiment, the bottom surface of the connecting cavity 221 is provided with a locking hole 222; the connecting end 3221 is provided with a fixing hole for corresponding communication with the locking hole 222; the seat further comprises a fastener 33, which is simultaneously provided in the locking hole 222 and the fixing hole, so as to fix the connecting end 3221.

[0051] Specifically, the locking hole 222 at the bottom surface of the connecting cavity 221 can accurately correspond to the fixing hole of the connecting end 3221, so that when the connecting end 3221 is inserted into the connecting cavity 221, the locking hole 222 and the fixing hole can be accurately aligned and communicated, providing a positioning basis for the subsequent threading of the fastener 33, ensuring that the fastener 33 can be smoothly threaded into the locking hole 222 and the fixing hole, so as to accurately connect the connecting end 3221 and the connecting seat 22, and limit the movement of the connecting end 3221 in various directions in the connecting cavity 221, including horizontal translation and rotation around the axis, thereby achieving preliminary positioning. By simultaneously threading the fastener 33 into the locking hole 222 and the fixing hole, the connecting end 3221 and the connecting seat 22 can be tightly connected, and when disassembly is required, the fastener 33 only needs to be loosened or removed, and then the connecting end 3221 and the connecting seat 22 are separated. By simultaneously threading the fastener 33 into the locking hole 222 and the fixing hole to fix the connecting end 3221, the risk of accidental disconnection of the connecting end 3221 from the connecting cavity 221 during normal use can be further reduced, and compared with the installation method of the buckle structure, the connection method of the present solution is more reliable.

[0052] In a further embodiment, the fastener 33 is a bolt, and the fixing hole is a threaded hole.

[0053] Specifically, when the connecting end 3221 is inserted into the connecting cavity 221, the locking hole 222 at the bottom surface of the connecting cavity 221 is accurately aligned with the threaded hole of the connecting end 3221, and then the bolt is threaded through the locking hole 222 and screwed into the threaded hole. When the bolt is threaded through the locking hole 222 at the bottom surface of the connecting cavity 221 and screwed into the threaded hole of the connecting end 3221, since the threaded hole has an internal thread and the bolt has an external thread, the thread shapes and pitches of the two are matched with each other. When the bolt is rotated, the external thread of the bolt is engaged with the internal thread of the threaded hole, and as the bolt is continuously screwed in, the bolt gradually penetrates into the threaded hole. Due to the axial tension of the bolt, the connecting end 3221 is tightly pulled towards the connecting seat 22, causing friction between the connecting end 3221 and the connecting cavity 221, which resists the movement of the connecting end 3221 in the connecting cavity 221, thereby achieving fixation of the connecting end 3221.

[0054] According to Figure 5 As shown, in some specific embodiments, the outer side of the fastener 33 is provided with a gasket 331.

[0055] Specifically, the gasket 331 can increase the contact area between the fastener 33 and the connecting end 3221 and the connecting seat 22, for example, when the fastener 33 is tightened, the gasket 331 can evenly distribute the pressure of the head of the fastener 33 on the surface of the connecting end 3221 and the connecting seat 22, that is, during the tightening process of the fastener 33, the gasket 331 can avoid the fastener 33 directly contacting the surface of the seat body 21, reducing the wear of the surface caused by friction and extrusion.

[0056] According to Figure 5 As shown in further embodiments, the outer side of the fastener 33 is further sleeved with an elastic sleeve 332.

[0057] Specifically, since the elastic sleeve 332 has a certain elasticity and flexibility, when the elastic sleeve 332 is sleeved on the outer side of the fastener 33 and located below the gasket 331, it tightly wraps the fastener 33, and due to the elasticity of the rubber ring, a supporting force and a friction force can be generated on the gasket 331, and the gasket 331 is sleeved on the outer side of the fastener 33; in this way, during the installation process, whether the connecting end 3221 is inserted into the connecting cavity 221 or subsequent tightening operation is performed, the gasket 331 can be effectively limited in the specified position by the elastic sleeve 332, so that it is difficult to fall or displace.

[0058] It can be understood that the elastic sleeve 332 of the embodiment of the utility model is a rubber sleeve made of natural rubber or synthetic rubber, and such an elastic sleeve 332 can maintain good elasticity within a relatively wide temperature range, and the specific type is not limited here.

[0059] According to Figure 5 As shown in some specific embodiments, one end of the fastener 33 is provided with a hand-tightening part 333.

[0060] Specifically, through the hand-tightening part 333, the operator can directly tighten or loosen the fastener 33 with his hand, so that no additional tools such as wrenches are needed. In some cases where the installation space is small and it is not convenient to use tools, the hand-tightening part 333 facilitates the operator to more flexibly and conveniently separate the fastener 33 from the locking hole 222 and the fixing hole.

[0061] According to Figure 2 As shown in some specific embodiments, the connecting framework 32 includes a support rod 321 and a connecting rod 322, the connecting end 3221 is arranged at one end of the support rod 321, and the support rod 321 is arranged at the other end of the support rod 321; the backrest assembly 31 is arranged on the connecting rod 322.

[0062] Specifically, one end of the support rod 321 is a connecting end 3221, and the other end is provided with the connecting rod 322, thereby playing a role of transmitting the pressure from the backrest assembly 31 to the connecting end 3221, providing reliable support for the backrest assembly 31, ensuring that the backrest can be kept in a suitable position and bear various forces generated when the human body leans on the backrest, including gravity, pressure and dynamic impact force, etc.; the connecting rod 322 as the direct support of the backrest assembly 31 can transmit the supporting force of the support rod 321 to the backrest assembly 31, that is, when the user leans on the backrest assembly 31, a backward pressure is generated, which is first transmitted by the backrest assembly 31 to the connecting rod 322, and then transmitted to the connecting end 3221 through the support rod 321, and then transmitted to the connecting seat 22 connected thereto through the connecting end 3221. In this way, through the support rod 321 and the connecting rod 322, the pressure can be uniformly distributed in the entire connecting framework 32, avoiding the case of excessive local stress, thereby ensuring the stability and reliability of the entire connecting framework 32 and reducing the condition of component damage or deformation caused by long-term uneven stress.

[0063] According to Figure 2 As shown in the further embodiment, the backrest assembly 31 includes at least two symmetrically arranged backrest plates 311 and connecting portions 312, each connecting portion 312 is connected with each backrest plate 311, and each connecting portion 312 is arranged outside the connecting rod 322.

[0064] Specifically, the at least two symmetrically arranged backrest plates 311 provide direct support for the human body, and the symmetric arrangement can ensure that uniform support force is provided to the left and right sides of the human body, so that the user's back can be comfortably fitted to the backrest plate 311, and the backrest plate 311 bears the pressure of the human body and transmits it to the connecting portion 312 and the connecting rod 322. The connecting portion 312 is used to connect the connecting rod 322 to transmit the force borne by the backrest plate 311 to the connecting rod 322, and then to the entire connecting framework 32 and the seat support structure through the connecting rod 322. At the same time, the connecting portion 312 is arranged outside the connecting rod 322, which can make the connection between the backrest plate 311 and the connecting rod 322 more stable, and can to some extent disperse the force to avoid damage caused by concentrated stress. In addition, through the arrangement of multiple connecting portions 312, the connection stability between the backrest plate 311 and the connecting rod 322 can be increased, ensuring that the entire backrest assembly 31 will not easily loosen or deform during long-term use.

[0065] When the user leans on the backrest assembly 31, the pressure generated first acts on the backrest plates 311, and since the backrest plates 311 are symmetrically arranged, the pressure is evenly distributed on each backrest plate 311, and then the backrest plates 311 transmit the force to the connecting portions 312 connected thereto, and the connecting portions 312 further transmit the pressure to the connecting rods 322, and since the connecting portions 312 are evenly distributed on the outer side of the connecting rods 322, the pressure can be evenly distributed along the connecting rods 322, avoiding the case of excessive local force, so that the entire backrest assembly 31 can effectively transmit the pressure of the human body to the support structure of the seat.

[0066] In further embodiments, the end surface of each backrest plate 311 away from the connecting portion 312 is formed with an arc surface for fitting the back of the human body.

[0067] Specifically, since the back of the human body is not completely flat, but has a certain physiological curve, the arc surface of each backrest plate 311 can match the curve of the back of the human body, so that each part of the back can be evenly supported, reducing local pressure, thereby relieving the fatigue of the back muscles, and making the user feel more comfortable when sitting or leaning for a long time; in addition, the arc surface can closely fit the back of the human body, effectively reducing the gap between the back and the backrest plate 311, thereby increasing the contact area between the human body and the seat, so that the force can be more evenly distributed on the back, avoiding the concentration of pressure caused by poor contact, and further improving the comfort and stability of the user when sitting.

[0068] According to Figure 2 As shown in FIG. 8, in some specific embodiments, the outer side of the support rod 321 is sleeved with a protective sleeve 323.

[0069] Specifically, in daily use, the support rod 321 can rub or collide with surrounding objects, such as contacting the ground, walls, etc. during the movement of the seat, or rubbing with tools, other components during installation and disassembly, so that the protective sleeve 323 can act as a buffer layer to reduce damage to the surface of the support rod 321 caused by such friction and collision, thereby prolonging the service life of the support rod 321; in addition, if the support rod 321 is exposed to the air, it is easy to be eroded by moisture, dust, chemicals, etc., especially in some harsh environmental conditions, such as a humid basement, so that the protective sleeve 323 can isolate the support rod 321 from the external environment, preventing moisture, dust and chemicals from adhering to the surface of the support rod 321, thereby reducing the risk of corrosion and maintaining the structural strength and stability of the support rod 321.

[0070] It can be understood that the protective sleeve 323 is a decorative tube, so that the decorative tube has a unique appearance design, such as having a texture, a pattern or a special surface treatment process, can add rich visual elements to the seat, so that the seat is more hierarchical and three-dimensional as a whole, thereby improving the artistic appreciation.

[0071] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A seat, characterized in that, The seat comprises: a chair leg; a chair body comprising a seat body and a connecting seat, the seat body being arranged on the top of the chair leg, and the connecting seat being arranged on the bottom of the seat body and recessed with a connecting cavity; a chair back comprising a backrest assembly and a connecting framework, the connecting framework being provided with a connecting end which is detachably inserted into the connecting cavity of the connecting seat, and the backrest assembly being arranged on the connecting framework; a bottom surface of the connecting cavity being through with a locking hole, the connecting end being provided with a fixing hole for corresponding communication with the locking hole, and the seat further comprising a fastener which is simultaneously threaded through the locking hole and the fixing hole to fix the connecting end.

2. The seat of claim 1, wherein The fastener is a bolt, and the fixing hole is a threaded hole.

3. The seat of claim 1, wherein An outer side of the fastener is sleeved with a gasket.

4. The seat of claim 3, wherein An outer side of the fastener is further sleeved with an elastic sleeve.

5. The seat of claim 1, wherein One end of the fastener is provided with a hand-tightening part.

6. The seat of claim 1, wherein The connecting framework comprises a support rod and a connecting rod, the connecting end being arranged on one end of the support rod, and the connecting rod being arranged on the other end of the support rod. The backrest assembly is arranged on the connecting rod.

7. The seat of claim 6, wherein The backrest assembly comprises at least two symmetrically arranged backrest plates and connecting parts, each of the connecting parts being connected with each of the backrest plates, and each of the connecting parts being arranged on the outer side of the connecting rod.

8. The seat of claim 7, wherein, An end surface of each of the backrest plates away from the connecting part is formed with a curved surface for fitting the back of a human body.

9. The seat of claim 6, wherein, An outer side of the support rod is sleeved with a protective sleeve.

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