Chair armrest

A chair armrest is revealed. The chair armrest includes an armrest support, an armrest pad body, a connection body, and a connecting member. The armrest pad body has a mounting slot with an opening facing downward while the mounting slot has a depth and a shape. The connection body is provided with a thickness and a shape which are corresponding to the depth and the shape of the mounting slot. Thus the connection body can be mounted and positioned in the mounting slot. The armrest support and the connection body of are connected by the connecting member. During assembly of the chair armrest, the armrest support is connected to the connection body by the connecting member while the armrest pad body is affixed with the armrest support into one part by the connecting member. Thereby production cost is reduced.

BACKGROUND OF THE INVENTION

The present invention relates to a chair armrest, especially to a chair armrest which solves a problem of armrest pad bodies of chair armrests available now that are only able to be used in combination with limited types of armrest supports.

Refer toFIG.12andFIG.13, a chair armrest1available now is composed of an armrest pad20assembled with an armrest support2. The armrest pad20is disposed on a top surface1aof the armrest support2. For assembly, at least two corresponding fastening holes24are preset in the assembly of the armrest pad20with the armrest support2for being assembled and fastened by fasteners such as screws2b. However, once the armrest support2is not provided with fasteners or other similar parts used in combination with the fastening holes24, the armrest pad20of the chair armrest1available now can only be assembled with limited types of the armrest support. Manufacturers need to develop and produce new armrest pads which is able to be used together with the armrest support which is not provided with fasteners or other similar parts. Thus production cost at the manufacturing end remains high.

Thus there is room for improvement and there is a need to provide a chair armrest in which an armrest pad is able to be used in combination with both an armrest support using fasteners during assembly and an armrest support without using fasteners during assembly.

SUMMARY OF THE INVENTION

Therefore, it is a primary object of the present invention to provide a chair armrest which includes an armrest pad body having a mounting slot with an opening facing downward and a connection body with a thickness and a shape. The mounting slot of the armrest pad body has a depth and a shape while the thickness and the shape of the connection body are corresponding to the depth and the shape of the mounting slot. Thus the connection body can be mounted and positioned in the mounting slot. The armrest support and the connection body of the chair armrest are connected by a connecting member so as to solve the problem of the armrest pad body of the chair armrest available now that is only able to be used in combination with limited types of armrest supports.

In order to achieve the above object, a chair armrest according to the present invention includes an armrest support, an armrest pad body, a connection body, and a connecting member. A top support surface is formed on a top of the armrest support and the armrest pad body is disposed on the top support surface of the armrest support. A mounting slot with an opening facing downward is arranged at a bottom surface of the armrest pad body. The mounting slot having a depth and a shape thereof is composed of an inner bottom surface and a mounting wall surface. The connection body is mounted between the armrest support and the armrest pad body and provided with a thickness and a shape which are corresponding to the depth and the shape of the mounting slot. Thus the connection body can be mounted and positioned in the mounting slot. During assembly of the chair armrest, the armrest support is connected to the connection body by the connecting member while the armrest pad body is affixed with the armrest support into one part by the connecting member. Thereby the problem of the armrest pad body of the chair armrest available now that is only able to be used in combination with limited types of armrest supports can be solved and thus the production cost is decreased.

Preferably, the connecting member includes a first connection portion and a second connection portion which are connected to each other vertically. One of the first connection portion and the second connection portion is disposed on the armrest support while the other is arranged at the connection body and positions of the first connection portion and the second connection portion are corresponding to each other. The first connection portion consists of a fastening head with a thickness along a vertical direction and a fastening neck connected to one side of the fastening head while the second connection portion is provided with a fastening hole and a locking slot which is having a depth in the vertical direction and communicating with an inner side of the fastening hole. A shape and an area of a horizontal cross section of the fastening hole are respectively a bit larger than a shape and an area of a horizontal cross section of the fastening head so that the fastening head can be vertically mounted in the fastening hole and then located in the locking slot. A shape and an area of a horizontal cross section of the locking slot is larger than and including the shape and the area of the horizontal cross section of the fastening head so that the locking slot further includes at least one travel area compared with the fastening head. Thereby the fastening head is able to be rotated horizontally along the respective travel area and further stopped and positioned at a stop position of the respective travel area after vertically mounted into the locking slot. While the fastening hole and the fastening head are aligned with each other vertically, the fastening head is able to be mounted into the locking slot through the fastening hole vertically. Now the fastening head and the fastening hole are in a first assembled state and a lengthwise central axis of the first connection portion and a lengthwise central axis of the top support surface of the armrest support are in a staggered manner horizontally with a staggered angle therebetween. Under the first assembled state, the fastening head is able to rotate horizontally around a vertical central axis of the fastening neck in the locking slot. When the fastening head is rotated the staggered angle in the locking slot and stopped rotating, the fastening head is stopped and positioned at the stop position of the travel area. Now the fastening head and the fastening hole are in a second assembled state. The armrest support and the armrest pad body are assembled and fastened with each other into one part.

Preferably, the first connection portion is integrally projecting from the top support surface of the armrest support while the second connection portion is arranged at the bottom surface of the connection body.

Preferably, the first connection portion is integrally projecting from the bottom surface of the connection body while the second connection portion is disposed on the top support surface of the armrest support.

Preferably, the connecting member includes at least one first connection portion and at least one second connection portion which are aligned and pressed to fit and connect with each other vertically. One of the first connection portion and the second connection portion is mounted to the top support surface while the other is arranged at the connection body and positions of the first and the second connection portions are corresponding to each other. The first connection portion and the second connection portion are respectively a shaft tube provided with a first fastening portion and a sleeve provided with a second fastening portion corresponding to the first fastening portion. The shaft tube and the sleeve are joined together by the first fastening portion fastened with the second fastening portion. The second fastening portion of the sleeve is located at an inner circular surface inside the sleeve.

Preferably, the sleeve further includes a packing member which is mounted to the connection body and located above the sleeve. The packing member has at least two packing sheets. The first fastening portion of the shaft tube is located on one end of the shaft tube. When the first fastening portion and the second fastening portion are fastened with each other, the first fastening portion of the shaft tube is pressed by compressive force of the two packing sheets of the packing member and forced to lock into the second fastening portion.

Preferably, the first connection portion is integrally formed and projecting from the top support surface of the armrest support while the second connection portion is arranged at the bottom surface of the connection body.

Preferably, the first connection portion is mounted on the bottom surface of the connection body while the second connection portion is integrally formed and projecting from the top support surface of the armrest support.

Preferably, the second fastening portion is a locking groove mounted to the inner circular surface, an insertion hole located at the inner circular surface, or a surface at one end of the inner circular surface.

Preferably, the two packing sheets are claw-shaped with an interval between them.

Preferably, the inner bottom surface of the armrest pad body further consists of two fastening holes which are symmetrical to each other, having a distance between them, and provided with openings facing downward.

Preferably, the armrest pad body is composed of an armrest pad and an armrest member.

Preferably, the armrest pad is a soft elastic body formed outside the armrest member by integrally foamed technique.

Preferably, the mounting wall surface of the armrest pad body is further provided with a locking recess and a lateral side of the connection body is provided with a locking member able to be locked and fixed in the locking recess. The connection body is mounted in the mounting slot by the locking member locked and fixed in the locking recess.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

A structure and technical features of the present invention are described in details in the following embodiments with reference to related figures and reference signs. The size of the respective components shown in figure is not drawn to scale.

Generally, a chair armrest is fastened and fixed on a right side and a left side of a chair from sitters' view. The lengthwise (forward and backward) direction or widthwise (leftward and rightward, from side to side) direction hereafter are viewed from the sitter.

Refer toFIG.1,FIG.2, andFIG.14, an assembled chair armrest1according to the present invention includes an armrest support10, an armrest pad body20and a connection body30. The chair armrest1is a basic type armrest which is unable to be rotated, moved forward and backward in a lengthwise direction, or leftward and rightward in a widthwise direction. Such kind of chair armrest1is commonly used by the public and having a huge market value. The chair armrest1features on a connecting member40shown inFIG.2or a connecting member50shown inFIG.14. The connecting member40and the connecting member50which are different are respectively used in the first embodiment and the second embodiment. The structure and technical features of the armrest support10, the armrest pad body20and the connection body30in the first embodiment and the second embodiment are about the same.

Refer toFIG.1andFIG.2, a top support surface11is formed on a top of the armrest support10and the armrest pad body20is disposed on the top support surface11of the armrest support10. A mounting slot21with an opening facing downward is arranged at a bottom surface of the armrest pad body20. The mounting slot21having a depth and a shape thereof is composed of an inner bottom surface22and a mounting wall surface23, as shown inFIG.3-5. The inner bottom surface22of the armrest pad body20is further including, but not limited to, two fastening holes24symmetrical to each other, having a distance d therebetween, and provided with openings facing downward, as shown inFIG.5so that the armrest pad body20can be fastened and connected with an armrest support available now by screws. The armrest pad body20is including, but not limited to, an armrest pad20aand an armrest member20b, as shown inFIG.4andFIG.5. The armrest pad20ais but not limited to a soft elastic body formed outside the armrest member20bby integrally foamed technique. The integrally foamed technique helps fast manufacturing and mass-production. The comfort of the soft and elastic material for the armrest pad20aimproves user satisfaction.

Moreover, the mounting wall surface23of the armrest pad body20is further including, but not limited to, a locking recess25. A lateral side of the connection body30is including, but not limited to, a locking member31able to be locked and fixed in the locking recess25correspondingly. The connection body30is mounted in the mounting slot21by the locking member31locked and fixed in the locking recess25so that locking stability between the respective components is improved.

As shown inFIG.2, the connection body30is disposed between the armrest support10and the armrest pad body20and having a thickness and a shape which are corresponding to the depth and the shape of the mounting slot21of the armrest pad body20. Thereby the connection body30can be mounted and positioned in the mounting slot21, as shown inFIG.3-5.

The followings are the first embodiment and the second embodiment with different connecting members.

Refer toFIG.1-11, the first embodiment of the chair armrest1is revealed. In this embodiment, the connecting member40includes a first connection portion41and a second connection portion42which are connected to each other vertically. One of the first connection portion41and the second connection portion42is disposed on the armrest10while the other is disposed on the connection body30and positions of the first connection portion41and the second connection portion42are corresponding to each other, as shown inFIG.2andFIG.11. The first connection portion41includes a fastening head43with a thickness along a vertical direction and a fastening neck44connected to one side of the fastening head43, as shown inFIG.22andFIG.11. As to the second connection portion42, it consists of a fastening hole45and a locking slot46which is having a depth in the vertical direction and communicating with an inner side of the fastening hole45, as shown inFIG.3andFIG.5. A shape and an area of a horizontal cross section of the fastening hole45are respectively a bit larger than a shape and an area of a horizontal cross section of the fastening head43so that the fastening head43can be vertically mounted in the fastening hole45and then located in the locking slot46, as shown inFIG.8-10. A shape and an area of a horizontal cross section of the locking slot46is larger than and including the shape and the area of the horizontal cross section of the fastening head43so that the locking slot46further includes at least one travel area47compared with the fastening head43. Thereby the fastening head43is able to be rotated horizontally (as shown inFIG.9) along the respective travel area47and further stopped and positioned at a stop position48(as shown inFIG.10) of the respective travel area47after vertically mounted into the locking slot46(as shown inFIG.8). While the fastening hole45and the fastening head43are aligned with each other vertically (as shown inFIG.2andFIG.11), the fastening head43is able to be mounted into the locking slot46through the fastening hole45vertically. Now the fastening head43and the fastening hole45are in a first assembled state, as shown inFIG.6andFIG.8. As shown inFIG.6, while in the first assembled state, a lengthwise central axis41aof the first connection portion41and a lengthwise central axis12of the top support surface11of the armrest support10are in a staggered manner horizontally with a staggered angle θ therebetween. As shown inFIG.9, under the first assembled state, the fastening head43is able to rotate horizontally around a vertical central axis44aof the fastening neck44in the locking slot46. When the fastening head43is rotated the staggered angle θ in the locking slot46and stopped rotating, unable to be rotated any more, the fastening head43is stopped and positioned at the stop position48of the travel area47. Now the fastening head43and the fastening hole45are in a second assembled state, as shown inFIG.7andFIG.10. The armrest support10and the armrest pad body20are fastened with each other into one part.

While being assembled into the chair armrest1, the armrest support10and the connection body30are connected to each other by vertical connection of the first connection portion41with the second connection portion42. As shown inFIG.2andFIG.11, the armrest pad body20is assembled and affixed with the armrest support10into one part by the connection body30.

Moreover, the first connection portion41and the second connection portion42can be arranged at either the armrest support10or the connection body30according to user's needs. In the embodiment shown inFIG.2, the first connection portion41is integrally projecting from, but not limited to, the top support surface11of the armrest support10while the second connection portion42is disposed on, but not limited to, the bottom surface of the connection body30.

As to the embodiment shown inFIG.11, the first connection portion41is integrally projecting from, but not limited to, the bottom surface of the connection body30while the second connection portion42is disposed on, but not limited to, the top support surface11of the armrest support10. Thereby the present device has much more various manufacturing applications. Except the positions of the first connection portion41and the second connection portion42, the rest structure and technical features of the above two embodiments are about the same.

Refer toFIG.14-23, a second embodiment of the chair armrest1according to the present invention is revealed. In this embodiment, the connecting member50includes at least one first connection portion51and at least one second connection portion52which are aligned and pressed to fit and connect with each other vertically, as shown inFIG.14andFIG.23. One of the first connection portion51and the second connection portion52is disposed on the top support surface11while the other is arranged at the connection body30and positions of the first connection portion51and the second connection portion52are corresponding to each other. The first connection portion51and the second connection portion52are respectively a shaft tube53provided with a first fastening portion55and a sleeve54provided with a second fastening portion56corresponding to the first fastening portion55. The shaft tube53and the sleeve54are affixed together by the first fastening portion55fastened with the second fastening portion56, as shown inFIG.20-22. The second fastening portion56of the sleeve54is located at an inner circular surface57inside the sleeve54, as shown inFIG.16,FIG.17, andFIG.19.

As shown inFIG.14andFIG.23, while being assembled into the chair armrest, the armrest support10and the connection body30are connected to each other by the first connection portion51and the second connection portion52which are aligned and pressed to fit and connect with each other vertically. The armrest support10and the armrest pad body20are connected into one part by the connection body30.

Refer toFIG.15,FIG.16,FIG.18, andFIG.19, the sleeve54further includes, but not limited to, a packing member58which is mounted to the connection body30and located above the sleeve54. The packing member58is provided with at least two packing sheets581, as shown inFIG.19. The first fastening portion55of the shaft tube53is located on one end of the shaft tube53, as shown inFIG.19. When the first fastening portion55is fastened with the second fastening portion56, the first fastening portion55of the shaft tube53is pressed by compressive force of the two packing sheets581of the packing member58and forced to lock into the second fastening portion56, as shown inFIG.20-22.

Moreover, the first connection portion51and the second connection portion52can be arranged at either the armrest support10or connection body30and corresponding to each other according to users' needs. As to the embodiment shown inFIG.14, the first connection portion51is integrally formed and projecting from, but not limited to, the top support surface11of the armrest support10while the second connection portion52is arranged at, but not limited to, the bottom surface of the connection body30.

By contrast, in the embodiment show inFIG.23, the first connection portion51is disposed on, but not limited to, the bottom surface of the connection body3while the second connection portion52is integrally formed and projecting from, but not limited to, the top support surface11of the armrest support10for more diverse manufacturing and applications. Except the changes of the positions of the first connection portion51and the second connection portion52, the rest structure or technical features are about the same in the above embodiments.

Refer toFIG.20,FIG.21, andFIG.22, the second fastening portion56is, but not limited to, a locking groove56amounted to the inner circular surface57(as shown inFIG.20), an insertion hole56blocated at the inner circular surface57(as shown inFIG.21), or a surface56cat one end of the inner circular surface57(as shown inFIG.22).

Refer toFIG.18, the two packing sheets581of the packing member58are, but not limited to, claw-shaped with an interval therebetween for providing higher pressing force to other structure.

Compared with the chair armrest available now, the chair armrest1of the present invention has the following advantages: The armrest pad body20of the present invention includes the mounting slot with the opening facing downward, the depth and the shape thereof. The thickness and the shape of the connection body30are corresponding to the depth and the shape of the mounting slot21of the armrest pad body20so that the connection body30of the chair armrest1can be mounted and positioned in the mounting slot21. The armrest support10and the connection body30are connected by the connecting member40or the connecting member50to solve the problem of the armrest pad body of the chair armrest available now that is only able to be used in combination with limited types of armrest supports. As shown inFIG.12andFIG.13, the present armrest pad body20not only can be assembled and fastened with the armrest support2available now through the original fastening holes24, but also can be combined with the connection body30and assembled with a new armrest support such as the present armrest support10by the connecting member40or the connecting member50, as shown inFIG.2,FIG.11,FIG.14, andFIG.23. For manufacturers, they don't need to develop and produce new armrest pad body used in combination the armrest support without using fasteners during assembly. The design reduces the manufacturing cost.