Armrest

Abstract

To provide an armrest functioning as a low-cost and simple attachment that permits easy mounting and removal on an existing desk and enables an elbow to be placed thereon during computer operation.SOLUTION: An armrest 10 comprises a slide base 20, a slider 60, and a pinch member 80. The slide base 20 supports the slider 60 so that it can slide. The slider 60 slides between a housed position accommodated in the slide base 20 and a drawn-out position extracted from the slide base 20. The pinch member 80 is supported rotatably by the slide base 20 and is biased by a torsion coil spring. The slide base 20 includes a clamping piece 22 that, together with the pinch member 80, clamps a top plate 12 of a desk 11 from front and rear sides. The armrest 10 is detachably attached to the top plate 12 of the desk 11 by the pinch member 80 and the clamping piece 22.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a structure of an armrest that is attached to a desk, for example, where computer work is performed. [Background technology]

[0002] When working on a computer, the action of operating a mouse in particular places a strain on the worker's body. For this reason, conventional office desks are provided with a support plate on which the worker can rest their elbows, and this support plate is designed to slide along the top plate (see, for example, Patent Document 1).

[0003] In the desk disclosed in Patent Document 1, the worker can pull out the mounting plate and rest their elbows on it while operating the mouse, allowing them to work on a computer with less strain on their body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-314242 Summary of the Invention [Problem to be solved by the invention]

[0005] However, conventional desks have a resting plate as part of the desk structure to support the worker's elbows, which means that workers have to purchase an expensive dedicated desk on which they can rest their elbows.

[0006] The present invention has been made against this background, and its purpose is to provide an armrest as a simple and inexpensive attachment that can be easily attached and detached to an existing desk and on which users can rest their elbows while working on a computer. [Means for solving the problem]

[0007] (1) In order to solve the above problem, the armrest of the present invention comprises a slide base that is placed on the tabletop of a desk, a slider that is supported on the slide base so that it can slide in a predetermined direction, and a clamping portion that is provided on the slide base and can clamp and release the side edge of the tabletop.

[0008] With this configuration, the clamping portion clamps the side edge of the desk top, thereby fixing the slide base to the desk top. The clamping portion can release its clamping of the desk top, allowing the slide base to be detachably attached to a desired position on the desk top. The slider is slidable in a predetermined direction relative to the slide base, allowing the user to move the slider to the optimal position for mouse operation. This armrest can be attached and detached to an existing desk as an attachment, and is simple in structure and inexpensive.

[0009] (2) The slide base may have a first body and a second body that are relatively movable along the predetermined direction, and the clamping portion has a first clamping piece that protrudes downward from one end of the first body in the predetermined direction, and a second clamping piece that protrudes downward from the other end of the second body in the predetermined direction.

[0010] The first clamping piece that constitutes the clamping section is provided on the first body, and the second clamping piece is provided on the second body, and the first and second bodies are movable relative to each other, so the distance between the first clamping piece and the second clamping piece can be freely adjusted according to the depth of the tabletop. Therefore, this armrest can be attached and detached to various desks with different depths.

[0011] (3) The slide base may be box-shaped with an opening on an end face in the predetermined direction, and the slider may be slidable between a storage position in which it is stored in the slide base and a withdrawal position in which it is withdrawn from the slide base through the opening.

[0012] The slider is slidable between a storage position where it is stored in the slide base and a drawn-out position where it is drawn out from the slide base, and therefore can be stored in the slide base when not in use.

[0013] (4) The clamping portion may clamp the rear side edge of the top plate from above and below.

[0014] The armrest is fixed to the rear edge of the tabletop, so it can be attached to the tabletop regardless of the depth of the tabletop. In other words, the armrest can be used regardless of the type of desk.

[0015] (5) The slider may be provided with an elbow rest on which the user can rest their elbow, and a pad rest on which a mouse pad can be placed.

[0016] Both the elbow rest portion and the pad rest portion may be provided on the slider.

[0017] (6) The width of the pad placement portion is wider than the width of the armrest portion.

[0018] The width of the armrest is narrower than the width of the pad placement portion, making the armrest compact. [Effects of the Invention]

[0019] The armrest according to the present invention can be attached to and detached from an existing desk as an attachment, and is simple in structure and inexpensive. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a perspective view of the appearance of an armrest 10 according to the first embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the armrest 10 in parts. [Figure 3] FIG. 3 is a fully exploded perspective view of the armrest 10. [Figure 4]FIG. 4(A) is a vertical cross-sectional view of the armrest 10 when the slider 60 is in the retracted position, and FIG. 4(B) is a vertical cross-sectional view of the armrest 10 when the slider 60 is in the extended position. [Figure 5] FIG. 5 is a cross-sectional view of the armrest 10. [Figure 6] FIG. 6 is an explanatory diagram for explaining attachment of the armrest 10 to the desk 11 and use, where (A) shows the attached state to the desk 11 and (B) shows the used state. [Figure 7] 7A and 7B are perspective views of an armrest 100 according to a modified example of the first embodiment, in which (A) shows the adjustment member 110 in the initial position, and (B) shows the adjustment member 110 in the maximum extended position. [Figure 8] FIG. 8 is a perspective view of an armrest 130 according to the second embodiment. [Figure 9] FIG. 9 is a vertical cross-sectional view of an armrest 130 according to the second embodiment. [Figure 10] FIG. 10(A) is a perspective view of an armrest 150 according to the third embodiment, and FIG. 10(B) is an exploded perspective view of the armrest 150. As shown in FIG. [Figure 11] FIG. 11(A) is a cross-sectional view of an armrest 150 according to the third embodiment, and FIG. 11(B) is a cross-sectional view taken along line BB in FIG. 11(A). [Figure 12] FIG. 12 is an explanatory diagram for explaining attachment of the armrest 150 to the desk 11 and use, where (A) shows the attached state to the desk 11 and (B) shows the used state. [Figure 13] FIG. 13 is a perspective view of an armrest 190 according to a modification of the third embodiment. [Figure 14] FIG. 14 is a perspective view of an armrest 200 according to the fourth embodiment, where (A) shows the armrest 200 attached to a desk 11 and (B) shows the armrest 200 in use. DETAILED DESCRIPTION OF THE INVENTION

[0021] A preferred embodiment of the present invention will now be described with reference to the accompanying drawings. Note that this embodiment is merely one aspect of the armrest of the present invention, and it goes without saying that the implementation may be changed without departing from the spirit and scope of the present invention.

[0022] [First embodiment]

[0023] FIG. 1 is an external perspective view of an armrest 10 according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of each component of the armrest 10. FIG. 3 is a fully exploded perspective view of the armrest 10. FIG. 4 is a longitudinal cross-sectional view of the armrest 10. FIG. 5 is a transverse cross-sectional view of the armrest 10. FIG. 6(A) is an explanatory diagram illustrating the attachment state of the armrest 10 to a desk 11, and FIG. 6(B) is an explanatory diagram illustrating the use state of the armrest 10.

[0024] [Armrest 10 Overview]

[0025] As shown in Fig. 6, the armrest 10 is attached by a user to a top 12 of an existing desk 11 for use. The armrest 10 supports the user's elbows (not shown) when the user uses a personal computer 13 on the desk 11. The user operates a mouse 15 with their elbows resting on the armrest 10.

[0026] 1, the armrest 10 includes a slide base 20, a slider 60, and a pinch member 80. The slide base 20, the slider 60, and the pinch member 80 may be made of synthetic resin, or may be made partially or entirely of metal.

[0027] [Slide Base 20]

[0028] The slide base 20 is a member that supports the slider 60 so that the slider 60 can slide.

[0029] As shown in FIG. 2, the slide base 20 includes a base body 21 and a clamping piece 22 .

[0030] The base body 21 has a hollow rectangular parallelepiped shape and has a front surface 23 , a rear surface 24 , an upper surface 25 , a lower surface 26 , a left side surface 27 , a right side surface 28 , and an inclined surface 29 .

[0031] The length (depth) D of the base main body 21 in the front-rear direction 8 is longer than the length (width) W1 of the base main body 21 in the left-right direction 9. Furthermore, the length (height) H1 of the base main body 21 in the up-down direction 7 is shorter than the width W1. In other words, the base main body 21 has a flat shape that is long in the front-rear direction 8.

[0032] The mouse pad 14 (see FIG. 6(B)) is placed on the upper surface 25. Furthermore, part of the user's arm, such as the wrist, is placed on the upper surface 25.

[0033] An opening 30 is provided on the front surface 23. A user pulls out the slider 60 from the slide base 20 through the opening 30 (see FIG. 6(B)), or pushes the pulled-out slider 60 back into the slide base 20 (see FIG. 6(A)). The front surface 23 provided with the opening 30 corresponds to the "end surface in a predetermined direction" described in the claims.

[0034] The inclined surface 29 extends from the front end of the upper surface 25 toward above the opening 30. In other words, the inclined surface 29 is inclined diagonally downward and forward from the front end of the upper surface 25. As shown in FIG. 6(B), the inclined surface 29 prevents a step from being formed between the upper surface 25 of the slide base 20 and the upper surface 63 of the slider 60. Because no step is formed between the upper surfaces 25, 63, the user can easily rest their elbow on the armrest 10. In other words, the armrest 10 is easier to use.

[0035] As shown in Figure 2, a pair of left and right bearing holes 32 are provided in the rear end portion 31 of the base body 21. The bearing holes 32 are provided in the left wall 33 and the right wall 34 of the rear end portion 31, respectively. The bearing holes 32 have a circular portion 35 and a sector portion 36. A shaft portion 89 of the rotation shafts 84, 85 of the pinch member 80 is inserted into the circular portion 35. A support rib 90 of the rotation shafts 84, 85 is inserted into the sector portion 36. The base body 21 rotatably supports the pinch member 80 at the rear end portion 31.

[0036] As shown in FIG. 4, the length (height) H2 of the rear end portion 31 of the base body 21 in the up-down direction 7 is set shorter than the height H1 so as not to hinder the rotation of the pinch member 80.

[0037] 2, the length (width) W2 of the rear end portion 31 in the left-right direction 9 is shorter than the width W1 (=W3). As shown in FIG. 1, the left side surface 27 of the slide base 20 and the left side surface 91 of the pinch member 80 are generally flush with each other, and the right side surface 28 of the base main body 21 and the right side surface 92 of the pinch member 80 are generally flush with each other.

[0038] As shown in Fig. 2, the clamping piece 22 protrudes downward from the front end of the base body 21. The clamping piece 22 faces the lower part of the pinch member 80 in the front-rear direction 8. As shown in Fig. 4(B), the clamping piece 22, together with the lower part of the pinch member 80, clamps the front and rear side edges of the table top 12 (see Fig. 6) of the desk 11. The clamping piece 22 corresponds to the "first clamping piece" recited in the claims.

[0039] As shown in Figure 2, a plurality of grooves 38 are provided on the rear surface 37 of the clamping piece 22. The grooves 38 extend in the left-right direction 9. The plurality of grooves 38 are aligned in the up-down direction 7. The plurality of grooves 38 increase the frictional force between the rear surface 37 and the side edges of the table top 12 of the desk 11, preventing the armrest 10 from falling off the desk 11 or becoming misaligned.

[0040] 3, the slide base 20 has an upper base 41 and a lower base 42. The upper base 41 forms the upper part of the base main body 21 and is a rectangular box-like structure with an open bottom surface. The upper base 41 has an opening 30 and a clamping piece 22. The lower base 42 forms the lower part of the base main body 21 and is a rectangular box-like structure with an open top surface.

[0041] The clamping piece 22 of the upper base 41 has a fitting hole 43 formed therein. The lower base 42 has a fitting piece 44 that is inserted into the fitting hole 43. Furthermore, the rear part of the lower base 42 has an insertion hole 46 through which a screw 45 is inserted. Meanwhile, as shown in FIG. 4 , the rear part of the upper base 41 has a screw hole 47 into which the screw 45 is screwed. The upper base 41 and the lower base 42 are connected to each other by the fitting piece 44 that is inserted into the fitting hole 43 and the screw 45 that is screwed into the screw hole 47.

[0042] As shown in Figures 3 and 5, the lower base 42 has a pair of left and right slide protrusions 48, 49. The slide protrusion 48 protrudes inward (toward the right) from a left inner surface 50 of the lower base 42. The slide protrusion 49 protrudes inward (toward the left) from a right inner surface 51 of the lower base 42. Two slide protrusions 48 and two slide protrusions 49 are provided on each of the lower base 42. The two slide protrusions 48 are spaced apart in the front-rear direction 8. Furthermore, the two slide protrusions 49 are spaced apart in the front-rear direction 8 (see Figure 3).

[0043] 5, the slide protrusions 48, 49 fit into guide grooves 67, 68 provided in the slider 60. The slide base 20 supports the slider 60 by the slide protrusions 48, 49 so that the slider 60 can slide along the front-rear direction 8. The front-rear direction 8 corresponds to the "predetermined direction" recited in the claims.

[0044] As shown in FIG. 3, the lower base 42 has a plurality of sliding ribs 53, a dropout prevention rib 54, a support rib 55, and a plurality of support ribs 56 that protrude upward from the bottom surface 52.

[0045] The sliding rib 53 extends along the front-rear direction 8. The sliding ribs 53 are aligned in the left-right direction 9. In the example shown in FIG. 3, three sliding ribs 53 are provided on the lower base 42. As shown in FIG. 4, when the slider 60 is slid along the front-rear direction 8, the rear sliding protrusion 70 of the slider 60 slides on the sliding ribs 53.

[0046] As shown in FIG. 3, the anti-slip rib 54 extends in the left-right direction 9. The anti-slip rib 54 is located in front of the sliding rib 53. As shown in FIG. 4(B), when the slider 60 is pulled out from the slide base 20, the rear sliding protrusion 70 of the slider 60 abuts against the anti-slip rib 54 before the slider 60 falls off the slide base 20. In other words, the anti-slip rib 54 prevents the slider 60 from falling off the slide base 20.

[0047] As shown in Fig. 3, the support rib 55 extends in the left-right direction 9. The support rib 55 is located in front of the fall-off prevention rib 54. As shown in Fig. 4(B), the support rib 55 supports the slider 60 together with the fall-off prevention rib 54 at the pulled-out position where the rear sliding protrusion 70 of the slider 60 abuts against the fall-off prevention rib 54.

[0048] As shown in FIG. 3, the support rib 56 extends along the front-rear direction 8. The support rib 56 is located in front of the support rib 55. The support ribs 56 are aligned in the left-right direction 9. In the example shown in FIG. 3, three support ribs 56 are provided on the lower base 42. As shown in FIG. 4(A), the support rib 56 supports the front support protrusion 71 of the slider 60 in the storage position.

[0049] 4 and 5, the upper base 41 has a plurality of pressing ribs 58 that protrude downward from a top surface 57. The pressing ribs 58 extend along the front-to-rear direction 8. The plurality of pressing ribs 58 are aligned in the left-to-right direction 9. In the example shown in FIG. 5, seven pressing ribs 58 are provided. When the user's elbow is placed on the slider 60, the pressing ribs 58 come into contact with an upper surface 63 of the slider 60 and press down on the rear portion of the slider 60 from above.

[0050] In this way, the slide base 20 supports the slider 60 slidably in the front-to-rear direction 8 by the slide protrusions 48, 49, the sliding rib 53, the fall-prevention rib 54, and the support ribs 55, 56. In addition, the sliding rib 53, the fall-prevention rib 54, the support ribs 55, 56, and the pressing rib 58 increase the strength of the slide base 20.

[0051] 3, a pair of left and right support ribs 96 is provided on the rear end portion 31 of the lower base 42. The left support rib 96 is located near the left bearing hole 32, and the right support rib 96 is located near the right bearing hole 32. One end portion 94 of a coil spring 93 is supported by the support ribs 96.

[0052] [Slider 60]

[0053] 2, the slider 60 has a rectangular parallelepiped shape and includes a front surface 61, a rear surface 62, an upper surface 63, a lower surface 64, a left side surface 65, and a right side surface 66. The slider 60 has a flat shape that is long in the front-to-rear direction 8, and is smaller than the slide base 20. In other words, the slider 60 can be accommodated in the slide base 20.

[0054] As shown in FIG. 5, the slider 60 has a pair of left and right guide grooves 67, 68. The guide groove 67 is provided on a left side surface 65 of the slider 60 and extends along the front-rear direction 8. The guide groove 68 is provided on a right side surface 66 of the slider 60 and extends along the front-rear direction 8. The slide protrusion 48 of the slide base 20 is fitted into the guide groove 67, and the slide protrusion 49 of the slide base 20 is fitted into the guide groove 68. The slider 60 is supported by the pair of left and right guide grooves 67, 68 so as to be slidable in the front-rear direction 8. The slider 60 slides between a housed position (see FIGS. 4(A) and 6(A)) in which it is housed in the slide base 20 and a drawn-out position (see FIGS. 4(B) and 6(B)) in which it is drawn out from the slide base 20.

[0055] 2, a finger hook recess 69 on which a user places a finger is provided on the front surface 61 of the slider 60. Note that instead of the finger hook recess 69, a finger hook protrusion on which a user places a finger may be provided on the front surface 61.

[0056] The slider 60 has a rear sliding protrusion 70 and a front support protrusion 71. The rear sliding protrusion 70 protrudes downward from the rear end of the lower surface 64. The front support protrusion 71 protrudes downward from the front end of the lower surface 64. The rear sliding protrusion 70 comes into sliding contact with the upper end of the sliding rib 53 (see FIG. 3) of the slide base 20 when the slider 60 slides from the stored position to the extended position. The front support protrusion 71 abuts against the upper end of the support rib 56 of the slide base 20 at the stored position (see FIG. 4(A)).

[0057] 3, the slider 60 includes a slider body 72 and a cover 73. The slider body 72 is shaped like a rectangular box with an open top, and has guide grooves 67, 68 and a finger hook recess 69. The cover 73 is shaped like a rectangular plate, and has an upper surface 63.

[0058] The slider body 72 has insertion holes 75. The cover 73 has screw holes 76 (see FIG. 4). Screws 74 are inserted into the insertion holes 75 and then threaded into the screw holes 76. The cover 73 is attached to the slider body 72 by the multiple screws 74.

[0059] [Pinch member 80]

[0060] 2, the pinch member 80 includes a pinch body 81, a pair of left and right protruding pieces 82, 83, and a pair of left and right rotating shafts 84, 85. The pinch member 80 corresponds to the "second clamping piece" described in the claims.

[0061] The pinch body 81 has a rectangular plate shape extending in the up-down direction 7 and the left-right direction 9. The length (width) W3 of the pinch body 81 in the left-right direction 9 is approximately the same as the width W1 of the slide base 20.

[0062] An opening 86 into which the rear end portion 31 of the slide base 20 is inserted is provided at the top of the pinch body 81. The length L1 of the opening 86 in the up-down direction 7 is set to be sufficiently longer than the length (height) H2 of the rear end portion 31 in the up-down direction 7. Therefore, the pinch member 80 does not come into contact with the rear end portion 31 when it rotates.

[0063] The portion above the opening 86 in the pinch body 81 is a handle that is pressed by the user. As shown in Fig. 1, the handle is located above the upper surface 25 of the slide base 20. The user rotates the pinch member 80 by pushing the handle forward.

[0064] The lower part of the pinch body 81 faces the clamping piece 22 in the front-to-rear direction 8. The distance L2 between the front surface 87 of the pinch body 81 and the rear surface 37 of the clamping piece 22 is the same as or slightly longer than the length L3 (see FIG. 6(A)) of the top plate 12 in the front-to-rear direction 8. The lower part of the pinch member 80, together with the clamping piece 22, clamps the side edges of the top plate 12 from the front to the rear.

[0065] As shown in Figure 2, a plurality of grooves 88 are provided in the lower part of the front surface 87 of the pinch body 81. The grooves 88 extend along the left-right direction 9. The plurality of grooves 88 are aligned in the up-down direction 7. The plurality of grooves 88 increase the frictional force between the front surface 87 and the side edges of the table top 12 (see Figure 6) of the desk 11. The plurality of grooves 88 prevent the armrest 10 from falling off the desk 11 or from shifting position.

[0066] The protruding piece 82 protrudes forward from the left end of the front surface 87. The protruding piece 82 is located to the left of the opening 86. The protruding piece 83 protrudes forward from the right end of the front surface 87. The protruding piece 83 is located to the right of the opening 86. The protruding pieces 82 and 83 face each other in the left-right direction 9.

[0067] The rotation shaft 84 protrudes inward (toward the right) from the left protrusion piece 82. The rotation shaft 85 protrudes inward (toward the left) from the right protrusion piece 83. The rotation shafts 84 and 85 are symmetrical and face each other in the left-right direction 9.

[0068] The pivot shafts 84, 85 each have a cylindrical shaft portion 89 and a support rib 90 protruding upward from the circumferential surface of the shaft portion 89. The shaft portion 89 is inserted into the circular portion 35 of the bearing hole 32 of the slide base 20. The support rib 90 is inserted into the sector portion 36 of the bearing hole 32. The pinch member 80 is supported by the pivot shafts 84, 85 on the rear end portion 31 of the slide base 20 so as to be pivotable.

[0069] Torsion coil springs 93 shown in Fig. 3 are attached to the rotating shafts 84 and 85, respectively. Specifically, shaft portions 89 of the rotating shafts 84 and 85 are inserted into the torsion coil springs 93. One end 94 of the torsion coil spring 93 abuts against a support rib 96 of the slide base 20, and the other end 95 abuts against a support rib 90 of the slide base 20. The pair of left and right torsion coil springs 93 urge the pinch member 80 in a direction in which the lower portion of the pinch member 80 faces forward. Note that the left torsion coil spring 93 is not shown in Fig. 3.

[0070] [Armrest 10 movement]

[0071] The user brings the clamping pieces 22 of the slide base 20 into contact with the front side edge of the tabletop 12 of the desk 11 (see FIG. 6), and then places the slide base 20 on the tabletop 12 by pushing the upper end (handle) of the pinch member 80 toward themselves to rotate the pinch member 80. The user then releases the pinch member 80. The pinch member 80 rotates due to the biasing force of the torsion coil spring 93, and comes into contact with the rear side edge of the tabletop 12 from behind. The pinch member 80 and the clamping pieces 22 clamp the side edges of the tabletop 12 of the desk 11 from the front and rear. As a result, the slide base 20 is fixed to the tabletop 12 (see FIG. 6(A)).

[0072] The user places their fingers in the finger hook recesses 69 of the slider 60 and pulls out the slider 60 from the slide base 20 (see FIG. 6(B)). The user places the mouse pad 14 on the top surface 25 of the slide base 20, rests their elbows on the top surface 63 of the slider 60, and rests their wrists on the top surface 25 of the slide base 20 to operate the mouse 15 on the mouse pad 14.

[0073] After using the personal computer 13, the user pushes the slider 60 into the slide base 20 to store the slider 60 in the slide base 20.

[0074] The user pushes the upper end (handle) of the pinch member 80 toward himself to rotate the pinch member 80, thereby releasing the fixation of the armrest 10 (releasing the clamping), and then removes it from the desk 11.

[0075] [Effects of the first embodiment]

[0076] The user can attach or detach the armrest 10 to a desired position on the tabletop 12 by rotating the pinch member 80. Therefore, the armrest 10 can be attached or detached to an existing desk as an attachment, and is simple in structure and inexpensive.

[0077] The slider 60 is slidable between a storage position (see Figure 6(A)) in which it is stored in the slide base 20 and a pulled-out position (see Figure 6(B)) in which it is pulled out from the slide base 20, so that it can be stored in the slide base 20 when not in use.

[0078] The slider 60 can slide between a storage position (see Figure 6(A)) in which it is stored in the slide base 20 and a pulled-out position (see Figure 6(B)) in which it is pulled out from the slide base 20, so that both the top surface 63 of the slider 60 and the top surface 25 of the slide base 20 can be used as surfaces on which the user's elbows and mouse pad 14 are placed.

[0079] The slide base 20 has an inclined surface 29 that eliminates the step between the upper surface 63 of the slider 60 and its own upper surface 25. Since the step is eliminated by the inclined surface 29, the armrest 10 becomes easier to use.

[0080] The upper end (handle) of the pinch member 80 that the user presses is located above the upper surface 25 of the slide base 20. Therefore, the user can rotate the pinch member 80 more easily than when pressing the lower part of the pinch member 80.

[0081] [Modification of the first embodiment]

[0082] In this modification, an armrest 100 (see FIG. 7) whose length can be adjusted according to the length of the desk 11 in the front-rear direction 8 will be described. Note that the same components as those in the first embodiment are given the same reference numerals as those in the first embodiment, and descriptions thereof will be omitted.

[0083] Fig. 7 is a perspective view of an armrest 100 according to this modification. In detail, Fig. 7(A) is a perspective view of the armrest 100 before the length is adjusted, and Fig. 7(B) is a perspective view of the armrest 100 after the length is adjusted.

[0084] [Armrest 100]

[0085] As shown in Figure 7, the armrest 100 has an adjustment member 110 and a fixing screw 119 instead of the pinch member 80 (see Figure 1). The armrest 100 also has a slide base 120 instead of the slide base 20. That is, the armrest 100 has the slide base 120, slider 60, adjustment member 110, and fixing screw 119. The slide base 120 and adjustment member 110 may be made of synthetic resin, or partly or entirely made of metal.

[0086] [Adjustment member 110]

[0087] The adjustment member 110 has a plate-shaped main body 111 and a clamping piece 112. The adjustment member 110 corresponds to the "second main body" recited in the claims.

[0088] A plurality of guide grooves 114 are provided on the upper surface 113 of the main body 111. The guide grooves 114 extend along the front-rear direction 8. The plurality of guide grooves 114 are aligned in the left-right direction 9. In the example shown in FIG. 7, two guide grooves 114 are provided on the main body 111. A slide protrusion (not shown) provided on the slide base 120 is fitted into the guide grooves 114. The fitting between the slide protrusion and the guide groove 114 is the same as the fitting between the slide protrusion 48 and the guide grooves 67, 68 (see FIG. 5), and therefore a detailed description thereof will be omitted.

[0089] The main body 111 is supported by the slide protrusion and the guide groove 114 so as to be slidable in the front-rear direction 8. The adjustment member 110 is slid by the user between an initial position (see FIG. 7(A)) in which it is housed in the slide base 120 and a maximum pulled-out position (see FIG. 7(B)) in which it is pulled out rearward from the slide base 120.

[0090] The clamping piece 112 protrudes downward from the rear end of the main body 111. The clamping piece 112 faces the clamping piece 22 of the slide base 120 in the front-rear direction 8. The clamping piece 112 corresponds to the "second clamping piece" described in the claims.

[0091] A plurality of grooves 116 are provided on the front surface 115 of the clamping piece 112. The grooves 116 extend along the left-right direction 9. The plurality of grooves 116 are aligned in the up-down direction 7.

[0092] [Slide Base 120]

[0093] The slide base 120 has a slide protrusion (not shown) that fits into the guide groove 114, instead of the rear end portion 31 (see FIG. 2).

[0094] The slide protrusion protrudes downward from the top surface (not shown) of the slide base 120 and extends along the front-rear direction 8. The base body 21 and the clamping pieces 22 of the slide base 120 correspond to the "first body" recited in the claims.

[0095] The slide base 120 has a screw hole 121. The screw hole 121 is located at the rear end of the top wall 118 of the slide base 120, and penetrates the top wall 118 in the up-down direction 7. A fixing screw 119 that fixes the adjustment member 110 is screwed into the screw hole 121.

[0096] The other configurations of the slide base 120 are the same as those of the slide base 20 .

[0097] [Fixing screw 119]

[0098] The fixing screw 119 is attached to a screw hole 121 of the slide base 120. The fixing screw 119 penetrates an upper wall 118 of the slide base 120.

[0099] When the fixing screw 119 is turned by the user, the tip of the fixing screw 119 comes into contact with the upper surface 113 of the adjustment member 110. As a result, the adjustment member 110 is fixed to the slide base 120.

[0100] When the adjustment member 110 is in the initial position (see FIG. 7(A)), the distance between the clamping piece 112 and the clamping piece 22 is L4 (see FIG. 7(A)), and when the adjustment member 110 is in the maximum extended position, the distance between the clamping piece 112 and the clamping piece 22 is L5 (see FIG. 7(B)). In other words, the armrest 100 can be attached to a desk 11 whose depth length L3 (see FIG. 6(A)) of the table top 12 is between L4 and L5. Note that L4 <L5である。

[0101] [Armrest 100 Operation]

[0102] The user pulls out the adjustment member 110 from the slide base 120 to the maximum pull-out position, and then places the slide base 120 on the top panel 12 of the desk 11. Next, the user slides the adjustment member 110 forward until the clamping piece 112 of the adjustment member 110 abuts against the rear side edge of the top panel 12. The user then rotates the fixing screw 119 to fix the adjustment member 110. The user places the mouse pad 14 (see FIG. 6(B)) on the top surface 25 of the slide base 120, pulls out the slider 60 from the slide base 20, and rests their elbows on it.

[0103] The user reversely turns the fixing screw 119 to release the fixing of the adjustment member 110 (release the clamping), and removes the armrest 100 from the desk 11.

[0104] [Operation and effect of the modified example of the first embodiment]

[0105] The length of the armrest 100 according to this modification can be freely adjusted according to the depth L3 (see FIG. 6(B)) of the table top 12. Therefore, the armrest 100 can be used with various desks 11 having different depth lengths.

[0106] [Other Modifications of the First Embodiment]

[0107] In the first embodiment, an example has been described in which the slide protrusions 48, 49 are provided on the left and right side walls of the slide base 20, and the guide grooves 67, 68 are provided on the left and right side walls of the slider 60. However, the slide protrusions 48, 49 may be provided on the upper wall or lower wall of the slide base 20, and the guide grooves 67, 68 may be provided on the upper wall or lower wall of the slider 60.

[0108] In the first embodiment, an example has been described in which the slide protrusions 48, 49 are provided on the slide base 20, and the guide grooves 67, 68 are provided on the slider 60. However, the slide protrusions 48, 49 may be provided on the slider 60, and the guide grooves 67, 68 may be provided on the slide base 20.

[0109] In the first embodiment, an example has been described in which the slider 60 is slidably supported on the slide base 20 by the slide protrusions 48, 49 and the guide grooves 67, 68. However, the slider 60 may be supported on the slide base 20 by any method and configuration as long as the slider 60 is slidable along the front-rear direction 8.

[0110] In order to reduce the sliding resistance when the slider 60 slides, rollers (so-called rolling rollers) may be provided on the slider 60 or the slide base 20.

[0111] [Second embodiment]

[0112] The second embodiment describes an armrest 130 (see FIG. 8) that is fixed to the top panel 12 (see FIG. 6) of the desk 11 by sandwiching the rear side edge of the top panel 12 from above and below. Note that the same components as those in the first embodiment are assigned the same reference numerals as those in the first embodiment, and descriptions thereof will be omitted.

[0113] Fig. 8 is a perspective view of the armrest 130 according to the second embodiment. Fig. 9 is a vertical cross-sectional view of the armrest 130 according to the second embodiment.

[0114] [Armrest 130]

[0115] 8, the armrest 130 includes a slide base 131 and a slider 60. The slide base 131 and the slider 60 may be made of synthetic resin, or may be made partly or entirely of metal.

[0116] [Slide Base 131] The slide base 131 includes a clamping mechanism 140 in place of the rear end portion 31 (see FIG. 2) and the clamping piece 22 (see FIG. 2).

[0117] The clamping mechanism 140 includes a contact piece 141 , a support piece 142 , and a fixing screw 143 .

[0118] The contact piece 141 is plate-shaped and protrudes downward from the rear end of the slide base 131 .

[0119] The support piece 142 protrudes forward from the lower end of the abutment piece 141 and faces the lower surface 26 of the slide base 131 in the up-down direction 7 .

[0120] The support piece 142 has screw holes 145 into which the fixing screws 143 are screwed. For example, the support piece 142 is provided with a pair of two screw holes 145, one on the left and one on the right.

[0121] The fixing screw 143 is attached to the screw hole 145. As shown in FIG. 9, when the fixing screw 143 is turned by a user, the tip of the fixing screw 143 abuts against the underside of the tabletop 12 of the desk 11. The rear side edge of the tabletop 12 is sandwiched between the fixing screw 143 and the underside 26 of the slide base 131 from above and below. In other words, the armrest 130 is fixed at its rear end to the tabletop 12 of the desk 11. The fixing screw 143 and the underside 26 of the slide base 131 correspond to the "clamping portion" recited in the claims.

[0122] [Operation of the second embodiment]

[0123] The user places the armrest 130 on the tabletop 12 so that the rear end of the slide base 131 is positioned behind the rear surface of the tabletop 12 of the desk 11, and then moves the armrest 130 forward to bring the rear surface of the tabletop 12 into contact with the contact piece 141. In other words, the user inserts the rear side edge of the tabletop 12 between the underside 26 of the slide base 131 and the support piece 142.

[0124] Next, the user rotates the fixing screw 143, bringing the tip of the fixing screw 143 into contact with the underside of the tabletop 12, and vertically sandwiching the rear side edge of the tabletop 12 between the fixing screw 143 and the underside 26 of the slide base 131. In other words, the user uses the fixing screw 143 to fix the armrest 130 to the tabletop 12. The user places the mouse pad 14 (see FIG. 6(B)) on the upper surface 25 of the slide base 131, and then pulls out the slider 60 from the slide base 131 to rest their elbows on it.

[0125] The user reversely turns the fixing screw 142 to release the fixing, and removes the armrest 130 from the desk 11.

[0126] [Effects of the second embodiment]

[0127] When a user places their elbow on the slider 60 of the armrest 130, an upward force acts on the rear end of the slide base 131, with the front end of the tabletop 12 as the fulcrum. This force is received by the fixing screw 143 and the support piece 142. In other words, even if the user places their elbow on the slider 60, the armrest 130 will not come off the desk 11. The armrest 130 according to this embodiment is fixed to the tabletop 12 only at the rear end, and is therefore easier to attach to and detach from the tabletop 12 than when it is fixed to the tabletop 12 at both the front and rear ends (armrests 10, 100).

[0128] Furthermore, because the armrest 130 according to this embodiment is fixed to the tabletop 12 only at the rear end, it can be fixed to the tabletop 12 regardless of the length (depth) of the tabletop 12 in the front-to-rear direction 8. In other words, the armrest 130 according to this embodiment does not require a mechanism for adjusting the length in the front-to-rear direction 8. As a result, the armrest 130 according to this embodiment has a simpler configuration than the armrest 100 that has a length adjustment mechanism.

[0129] [Modification of the second embodiment]

[0130] In the second embodiment, an example has been described in which the top plate 12 is sandwiched between the lower surface 26 of the slide base 131 and the fixing screw 143. However, as long as the top plate 12 can be sandwiched between the upper and lower surfaces, a configuration other than the lower surface 26 of the slide base 131 and the fixing screw 143 may be employed.

[0131] [Third embodiment]

[0132] In the third embodiment, an armrest 150 (see FIG. 10) will be described in which a slider 170 slides on a slide base 151. Note that the same components as those in the first and second embodiments are given the same reference numerals as those in the first and second embodiments, and descriptions thereof will be omitted.

[0133] FIG. 10(A) is a perspective view of an armrest 150 according to a third embodiment. FIG. 10(B) is an exploded perspective view of the armrest 150 according to the third embodiment. FIG. 11(A) is a horizontal cross-sectional view of the armrest 150. FIG. 11(B) is a cross-sectional view taken along line BB in FIG. 11(A), that is, a horizontal cross-sectional view of the armrest 150. FIG. 12 is an explanatory diagram illustrating how to use the armrest 150 according to the third embodiment. In detail, FIG. 12(A) is a perspective view of the armrest 150 and desk 11 in a state where the slider 170 is in an initial position covering the slide base 151. FIG. 12(B) is a perspective view of the armrest 150 and desk 11 in a state where the slider 170 has been slid forward from the initial position.

[0134] [Armrest 150]

[0135] 10, the armrest 150 includes a slide base 151 and a slider 170. The slide base 151 and the slider 170 may be made of synthetic resin, or may be made partly or entirely of metal.

[0136] [Slide Base 151]

[0137] The slide base 151 includes a base body 152 , slide protrusions 161 and 162 , and a clamping mechanism 140 .

[0138] The base body 152 has a rectangular frame shape that is long in the front-rear direction 8 , and includes a left crosspiece 153 , a right crosspiece 154 , a front crosspiece 155 , a rear crosspiece 156 , and a plurality of connecting crosspieces 157 .

[0139] The base main body 152 has positioning hole groups 158 and 159. The positioning hole group 158 is provided in the left crosspiece 153. The positioning hole group 159 is provided in the right crosspiece 154. The positioning hole groups 158 and 159 each have a plurality of positioning holes 160. The plurality of positioning holes 160 are aligned along the front-rear direction 8. The positioning holes 160 each pass through the left crosspiece 153 and the right crosspiece 154 in the left-right direction 9.

[0140] The slide protrusion 161 protrudes outward (toward the left) from the upper end of the left crosspiece 153 and extends along the front-to-rear direction 8. The slide protrusion 162 protrudes outward (toward the right) from the upper end of the right crosspiece 154 and extends along the front-to-rear direction 8.

[0141] The clamping mechanism 140 has the same configuration as the clamping mechanism 140 (see FIG. 8) described in the second embodiment, and includes a contact piece 141, a support piece 142, and a fixing screw 143. The contact piece 141 protrudes downward from a rear rail 156 of the base main body 152. The fixing screw 143 and the rearmost connecting rail 157 clamp the rear side edge of the top plate 12 of the desk 11 (see FIG. 12) from above and below. The fixing screw 143 and the connecting rail 157 correspond to the "clamping section" set forth in the claims.

[0142] [Slider 170]

[0143] 10 and 11, the slider 170 is a rectangular box shape that is open on the bottom and rear sides, and includes an upper wall 171, a left wall 172, a right wall 173, a front wall 174, a left bottom wall 175, and a right bottom wall 176. The slider 170 has a flat shape that is long in the front-rear direction 8.

[0144] 11(A), the slider 170 has a pair of left and right pressing protrusions 177, 178 that protrude downward from the lower surface of the upper wall 171. The pressing protrusions 177, 178 each extend along the front-rear direction 8. The tip (lower end) of the left pressing protrusion 177 abuts against or is close to the slide protrusion 161 of the slide base 151. The tip (lower end) of the right pressing protrusion 178 abuts against or is close to the slide protrusion 162 of the slide base 151.

[0145] The slider 170 has a pair of left and right support protrusions 179, 180. The support protrusion 179 protrudes upward from the left bottom wall 175 and extends along the front-to-rear direction 8. The support protrusion 180 protrudes upward from the right bottom wall 176 and extends along the front-to-rear direction 8.

[0146] The tip (upper end) of the support protrusion 179 abuts against the slide protrusion 161 of the slide base 151. That is, the support protrusion 179, together with the pressing protrusion 177, sandwiches the slide protrusion 161 from above and below. That is, the support protrusion 179, together with the pressing protrusion 177, forms a guide groove into which the slide protrusion 161 fits.

[0147] The tip (upper end) of the support protrusion 180 abuts against the slide protrusion 162 of the slide base 151. That is, the support protrusion 180, together with the pressing protrusion 178, sandwiches the slide protrusion 162 from above and below. That is, the support protrusion 180, together with the pressing protrusion 178, forms a guide groove into which the slide protrusion 162 fits.

[0148] The slide base 151 supports the slider 170 by means of slide protrusions 161 and 162 so that the slider 170 can slide in the front-rear direction 8 .

[0149] The slider 170 includes a leaf spring 181. As shown in FIG. 11(B), the leaf spring 181 has a central curved portion 182 and plate-shaped end portions 183 and 184. The leaf spring 181 is fixed to the right side surface of the support protrusion 179 and the left side surface of the support protrusion 180, respectively. Specifically, only one end portion 183 (or end portion 184) of the leaf spring 181 is fixed to the right side surface or the left side surface. Since only one end portion 183 of the leaf spring 181 is fixed, when the curved portion 182 is pressed, the curved portion 182 is crushed and deformed, and comes out of the positioning hole 160. In other words, the positioning of the slider 170 is released.

[0150] [Armrest 150 Operation]

[0151] The user places the armrest 150 on the tabletop 12 of the desk 11 (see FIG. 12(A)) so that the rear end of the slide base 151 is positioned behind the rear surface of the tabletop 12, and then slides the armrest 130 forward until the rear surface of the tabletop 12 abuts against the abutment piece 141. This causes the rear side edge of the tabletop 12 to be inserted between the base body 152 and the support piece 142.

[0152] Next, the user rotates the fixing screw 143, bringing the tip of the fixing screw 143 into contact with the underside of the tabletop 12, and vertically sandwiching the rear side edge of the tabletop 12 between the fixing screw 143 and the base body 152. In other words, the user fixes the armrest 130 to the tabletop 12 (see FIG. 12(A)).

[0153] The user grabs the slider 170 with their hand and pulls it forward. As a result, the curved portion 182 of the leaf spring 181 is pressed against the portion between the two positioning holes 160 in the slide base 151 and is crushed (deformed), thereby releasing the positioning of the slider 170. The slider 170, whose positioning has been released, can then be slid forward to the user's desired position. When the user releases their hand from the slider 170, the curved portion 182 of the leaf spring 181 fits into the positioning hole 160, and the slider 170 is fixed.

[0154] The user places the mouse pad 14 on the upper wall 171 of the slider 170 and operates the mouse 15 by resting their elbows on the upper wall 171. The upper wall 171 of the slider 170 corresponds to the "elbow rest portion" and "pad rest portion" described in the claims.

[0155] [Effects of the third embodiment]

[0156] Because the slider 170 is not housed in the slide base 151 but covers it, the height of the armrest 150 can be made lower than when the slider is housed in the slide base (first embodiment and second embodiment). That is, the armrest 150 of this embodiment can be made more compact than the armrests 10, 100, and 130. Also, because the slide base 151 does not need to be hollow to house the slider 170, the strength of the slide base 151 can be made higher than when it is hollow (slide bases 20, 120, and 131 of the first and second embodiments).

[0157] [Modification of the third embodiment]

[0158] In this modification, an armrest 190 (see FIG. 13) is described in which the portion on which the mouse pad 14 is placed is wider than the portion on which the elbow is placed. Note that the same components as those in the third embodiment are assigned the same reference numerals as those in the third embodiment, and the description thereof will be omitted.

[0159] FIG. 13 is a perspective view of an armrest 190 according to this modification.

[0160] The armrest 190 includes a slide base 151 and a slider 191. The slider 191 may be made of synthetic resin, or may be made partly or entirely of metal.

[0161] [Slider 191]

[0162] Slider 191 has narrow portion 192 and wide portion 193. The length (width) W5 of wide portion 193 in the left-right direction 9 is longer than the length (width) W4 of narrow portion 192 in the left-right direction 9. Mouse pad 14 is placed on wide portion 193. Elbows are placed on narrow portion 192. Narrow portion 192 corresponds to the "elbow rest portion" recited in the claims. Wide portion 193 corresponds to the "pad rest portion" recited in the claims.

[0163] The other configurations of the slider 191 are the same as those of the slider 170 .

[0164] [Operation and effect of the modified example of the third embodiment]

[0165] In this modification, the slider 191 has a portion (wide portion 193) on which the mouse pad 14 is placed that is wider than the other portion (narrow portion 192). Therefore, the armrest 190 can be made more compact than when the entire slider 191 is made approximately the same size as the mouse pad 14 (armrest 150 of the third embodiment).

[0166] [Other Modifications of the Third Embodiment]

[0167] In the third embodiment, an example has been described in which the leaf spring 181 is used. However, instead of the leaf spring 181, other elastic members such as spring materials of other shapes or rubber may be used.

[0168] In the third embodiment, an example has been described in which pushing the slider 170 back and forth applies a load to the curved portion 182 of the leaf spring 181, deforming the curved portion 182 and releasing the positioning of the slider 170. However, the slider 170 may be provided with a knob that crushes and deforms the curved portion 182. The user presses the knob to release the positioning of the slider 170, and slides the slider 170 back and forth while pressing the knob. When the user releases the knob, the curved portion 182 of the leaf spring 181 returns to its original shape and fits into the positioning hole 160, and the slider 170 is fixed to the slide base 151.

[0169] In the third embodiment, an example has been described in which the slider 170 is fixed to the slide base 151 by the leaf spring 181. However, the slider 170 may be fixed to the slide base 151 by other fixing methods such as a fixing screw.

[0170] In the third embodiment, an example has been described in which the clamping mechanism 140 is used as an attachment mechanism to the top panel 12 of the desk 11. However, instead of the clamping mechanism 140, the pinch member 80 described in the first embodiment or the adjustment member 110 described in the modified example of the first embodiment may be used.

[0171] [Fourth embodiment]

[0172] In the fourth embodiment, an armrest 200 that is extended by rotation (see FIG. 14) will be described. Note that the same components as those in the first, second, and third embodiments are given the same reference numerals as those in the first, second, and third embodiments, and descriptions thereof will be omitted.

[0173] Fig. 14(A) is a perspective view of the armrest 200 according to the fourth embodiment, showing a state in which the rotating body 210 of the slider 201 is above the slider body 202. Fig. 14(B) is a perspective view of the armrest 200 according to the fourth embodiment, showing a state in which the rotating body 210 has been rotated to the use position.

[0174] [Armrest 200]

[0175] The armrest 200 includes a slide base 151 and a slider 201. The slider 201 may be made of synthetic resin, or may be made partly or entirely of metal.

[0176] [Slider 201]

[0177] The slider 201 includes a slider body 202 and a rotating body 210 .

[0178] The slider body 202 has the same configuration as the slider 170 and is supported by the slide base 151 so as to be slidable in the front-rear direction 8 .

[0179] The slider body 202 further includes a recess 203 and a pair of left and right bearing holes 204 for rotatably supporting the rotating body 210 .

[0180] The recess 203 is provided on the front end of the upper surface 205 and the front surface 206 of the slide body 212 .

[0181] One (left) bearing hole 204 is provided in the left side surface that defines the recess 203. The other (right) bearing hole 204 is provided in the right side surface 208 that defines the recess 203.

[0182] [Rotating body 210]

[0183] The length (depth) L6 of the rotating body 210 in the front-rear direction 8 is approximately the same as or shorter than the length (depth) L7 of the slider body 202 in the front-rear direction 8.

[0184] The rotating body 210 is equipped with a pair of left and right rotating shafts 211. The left rotating shaft 211 protrudes outward (toward the left) from a left side surface 213 of the rotating body 210. The right rotating shaft 211 protrudes outward (toward the right) from a right side surface 214 of the rotating body 210. The rotating shafts 211 are inserted into bearing holes 204 of the slider body 202. The rotating body 210 is rotatably supported by the slider body 202 by the rotating shafts 211.

[0185] The rotating body 210 rotates between an initial position (see FIG. 14(A)) where it is located above the slider body 202 and a use position (see FIG. 14(B)) where it is located in front of the slider body 202.

[0186] The slider body 202 has a support surface 215 that serves as a lower surface in the initial position and as an upper surface in the use position. In the initial position, the support surface 215 abuts against the upper surface 205 of the slider body 202. In the use position, the support surface 215 is generally flush with the upper surface 205.

[0187] [Armrest 200 Operation]

[0188] After attaching armrest 200 to tabletop 12 of desk 11, the user rotates rotating body 210 from the initial position to the usage position. Next, the user adjusts the position by sliding slider 201 back and forth to the desired position. The user places mouse pad 14 (see FIG. 6(B)) on slider body 202, and operates mouse 15 (see FIG. 6(B)) by resting their elbow on rotating body 210.

[0189] [Effects of the fourth embodiment]

[0190] By rotating the rotating body 210 from the initial position to the use position, the length of the slider 201 in the front-rear direction 8 is doubled. Therefore, the length required for the user to rest their elbow on the mouse 15 and operate it can be secured, and when not in use, the mouse can be folded compactly.

[0191] [Modification of the fourth embodiment]

[0192] In the fourth embodiment, an example has been described in which the slide base 151 having the clamping mechanism 140 (see FIG. 10) is used as an attachment mechanism to the top board 12 of the desk 11. However, instead of the clamping mechanism 140, the pinch member 80 described in the first embodiment or the adjustment member 110 described in the modified example of the first embodiment may be used.

[0193] In the fourth embodiment, an example has been described in which the rotating body 210 is rotatably supported on the slider body 202 by the rotating shaft 211. However, a hinge may be used instead of the rotating shaft 211. One end of the hinge is fixed to the rotating body 210, and the other end is fixed to the slider body 202. [Explanation of symbols]

[0194] 8. Forward / backward direction (specified direction) 10, 100, 130, 150, 190, 200... Armrest 11...desk 12. Top plate 13. Personal Computer 14. Mouse pad 15. Mouse 20, 120, 151... Slide base 21 Base body (first body) 22... Clipping piece (clamping part) 26...Bottom surface (clamping part) 80 Pinch member (clamping portion) 60, 170, 201... slider 110 Adjustment member (second main body) 112... Clipping piece (clamping part) 140...Pinch mechanism 143 Fixing screw (clamping part) 157 Connecting bar (clamping part) 171 Upper wall (elbow rest, pad rest) 192 Narrow section (elbow rest) 193 Wide section (pad placement section)

Claims

1. A slide base that is placed on the desk top; a slider supported on the slide base so as to be slidable in a predetermined direction; The armrest is provided with a clamping portion that is provided on the slide base and is capable of clamping and releasing the side edge portion of the tabletop.

2. the slide base has a first body and a second body that are relatively movable along the predetermined direction, The clamping unit is a first clamping piece that protrudes downward from one end of the first body in the predetermined direction; The armrest according to claim 1, further comprising: a second clamping piece projecting downward from the other end of the second body in the predetermined direction.

3. the slide base is box-shaped with an opening on an end surface in the predetermined direction, The armrest according to claim 1 or 2, wherein the slider is slidable between a storage position in which the slider is stored in the slide base and an extended position in which the slider is extended from the slide base through the opening.

4. The armrest according to claim 1 , wherein the clamping portion clamps a rear side edge of the tabletop from above and below.

5. 3. The armrest according to claim 1, wherein the slider is provided with an elbow rest portion on which a user's elbow is placed and a pad rest portion on which a mouse pad is placed.

6. The armrest according to claim 5, wherein the pad placement portion has a width greater than a width of the armrest portion.

Images