TWI461168B - Chair structure and method of assembling and diassembling the same - Google Patents

Description

Seat structure and its assembly and disassembly method

The invention relates to a seat structure and a method of assembling and disassembling a seat structure.

Current seats typically include a bracket and a seat portion, wherein the seat portion is coupled to the bracket. For ease of use, the seat may also include a pivoting mechanism through which the ride can be rotated relative to the bracket. When someone is sitting on the ride, the user can push the ride to rotate. However, the pivoting mechanism normally used in the seat makes the seat unremovable. As a result, the seat cannot be closely packed when the seat is not in use.

Therefore, there is a need for a seat that can be easily assembled and disassembled, and which overcomes the above-mentioned deficiencies.

The invention provides a method for assembling and disassembling a seat structure and a seat structure.

According to an embodiment of the present invention, the seat structure includes: a seat frame having a first coupling member; and a base including a pivot and a second coupling member, the pivot is coupled to the base and partially The second coupling member is pivotally connected to the pivoting portion, wherein the second coupling member comprises a latching member, and when the seat frame is assembled to the base, the latching member is The first coupling member can be locked to the second coupling member, and the latch member can be unlocked to detach the seat frame from the base; wherein the first and second coupling members pass through the latch The seat frame, the first coupling member and the second coupling member are synchronously rotatable relative to the pivot when the phase is locked; the first coupling is when the seat frame and the first coupling member are detached from the base The piece is separated from the second coupling member, and the second coupling member and the pivot maintaining group Connected to the base.

According to an embodiment of the seat structure, the first coupling member includes a hole, and the latch member is engageable with the hole to lock the first coupling member and the second coupling member.

According to an embodiment of the seat structure, the latch member includes a resilient tongue and a snap flange, the snap flange protruding from the tongue, when the latch couples the first coupling When the piece is locked to the second coupling member, the engaging flange is engaged with the hole.

According to an embodiment of the seat structure, the tongue is radially bendable relative to the pivot such that the latch engages or locks.

According to an embodiment of the seat structure, the second coupling member further includes a rotation lock, the rotation lock is movable along an extending direction parallel to the pivot to be coupled to the base when the seat frame is assembled The frame can be prevented or allowed to rotate about the pivot.

According to an embodiment of the seat structure, the second coupling member includes a sleeve, and the sleeve is provided with a receiving groove, and the rotation lock is slidably disposed in the receiving groove.

According to an embodiment of the seat structure, the brake lock includes a handle, the first coupling member is provided with a slot, and the handle extends radially relative to the pivot when the seat frame is coupled to the base Out of the slot.

According to an embodiment of the seat structure, the rotation of the seat frame relative to the base can be transmitted from the first coupling member to the rotation of the handle by the contact between the handle and the side wall of the slot of the first coupling member. The second coupling member.

According to an embodiment of the seat structure, the brake lock has a first end portion, the first end portion includes a plurality of limiting flanges, and the base is provided with a protrusion when the rotation lock moves toward the base Upon reaching a first position to prevent rotation of the seat frame, the positions of the restraining flanges are close to opposite sides of the bump.

According to an embodiment of the seat structure, the brake lock has a second end, The second end portion includes a hook portion that is detachably fixedly coupled to the second coupling member when the rotation lock is moved away from the base to a second position to allow rotation of the seat frame.

According to an embodiment of the seat structure, the second coupling member is pivotally connected to the pivot through at least one bearing.

According to an embodiment of the seat structure, the base includes a cushion, and the second coupling member is provided with a plurality of sleeve flanges, the sleeve flanges abutting the cushion to limit the seat frame Rotation range.

According to an embodiment of the seat structure, the interior of the first coupling member is hollow, and when the seat frame is assembled to the base, the second coupling member can be received in the first coupling member.

In addition, the present invention also provides a method for assembling and disassembling a seat structure, wherein the seat structure includes a seat frame and a base, and the method includes: providing a seat frame, wherein the seat frame has a first coupling member The first coupling member is provided with a hole; a base is provided, wherein the base has a pivot, and the pivot is pivotally connected to a second coupling member and partially received in the second coupling member, wherein the first coupling member The second coupling member includes a latching member; the first coupling member is sleeved on the second coupling member, so that the latching member is engaged with the hole, and the first coupling member is locked with the second coupling member. The chair frame is coupled to the base, wherein the seat frame, the first coupling member and the second coupling member are synchronously rotatable relative to the pivot shaft after the first coupling member is locked with the second coupling member. Operating the latch to unlock the first coupling member and the second coupling member; and detaching the chair frame and the first coupling member from the base and the second coupling member, wherein the seat frame When the first coupling member is separated from the base, the second coupling member is Assembled with the pivot is maintained on the base.

According to an embodiment of the method, the latch member includes a resilient tongue portion and a snap flange, the snap flange protruding from the tongue portion, and the latch member locking the first coupling member The engaging flange is engaged with the hole when the second coupling member is used.

According to an embodiment of the method, the method further includes: moving the engaging flange in a radial direction of the pivot to unlock the first coupling member and the second coupling member; and moving away from the base frame from the base.

According to an embodiment of the method, the second coupling member further includes a rotation lock, the rotation lock is movable in a direction parallel to the pivot, and the rotation lock comprises a handle, the first coupling member A slot is provided, and the handle protrudes out of the slot along a radial direction of the pivot.

According to an embodiment of the method, the method further includes: moving the brake lock toward the base until a plurality of limiting flanges disposed on the first end of the brake lock are located adjacent to a protrusion of the base, thereby The rotation of the seat frame relative to the base is prevented.

According to an embodiment of the method, the method further includes: moving the rotation lock away from the base until a hook provided on the second end of the rotation lock is engaged with the second coupling member, thereby allowing the chair The frame rotates relative to the base about the pivot.

According to one embodiment of the method, the step of moving the tactile lock away from the base will cause the plurality of restraining flanges to disengage from the projection, such that the frame can be rotated relative to the base.

The seat structure of the present invention and the method of assembling and disassembling the seat structure have at least the following advantages: the seat frame can be conveniently assembled to or detached from the base, thereby assisting in the storage of the seat structure.

The present invention provides a seat structure and a method of assembling and disassembling the same. The use of the seat structure includes seats for young children or infants, but is not limited thereto.

1 and 2 are respectively an exploded perspective view and a perspective assembled view of a seat structure 100 according to an embodiment of the present invention. The seat structure 100 includes a base 102, a frame 104, and a pivot assembly 106. The pivot assembly 106 is disposed on the base 102. The base 102 can include a plurality of support rods 108 and a connecting portion 110, and the support rods 108 are radially extended by the connecting portion 110 to stably seat the seat structure 100 on the floor. The connecting portion 110 of the base 102 has a recess 112, and the pivoting assembly 106 of the base 102 is inserted and coupled to the recess 112. The chair frame 104 can be a tubular structure 114, and the tubular structure 114 of the frame 104 has a bracket 115 and a first coupling member 117, wherein the first coupling member 117 is fixed to the bracket 115. In an embodiment of the invention, the first coupling member 117 can be cup-shaped and hollow inside. When the frame 104 is assembled to the base 102, the pivoting assembly 106 of the base 102 can be received in the frame 104. The inside of the first coupling member 117. In particular, one side of the first coupling member 117 may include a slot 119, and the slot 119 may be engaged with the second coupling member 124 (see FIG. 3) of the pivot assembly 106, so that the frame 104 can be The Y axis defined about the pivot assembly 106 rotates relative to the base 102.

3 to 5 are respectively a cross-sectional view of the pivoting assembly 106 assembled with the base 102 and the first coupling member 117, an exploded view of the pivoting assembly 106, and a combined view of the pivoting assembly 106. As shown in FIG. 3, the first coupling member 117 may include an outer cup 117A and an inner cup 117B. The inside of the inner cup 117B is hollow, and the inner cup 117B can be disposed in the outer cup 117A. Referring to FIGS. 3 and 4 , the pivoting assembly 106 of the base 102 includes a pivot 122 and a second coupling 124 . The pivot 122 defines a pivot axis Y and the second coupling 124 is pivotally coupled to the pivot 122 . . The pivot 122 has a first end 122A that is secured within the recess 112 of the base 102. The recess 112 is at least partially defined by the bottom surface 112A and the side wall 112B. The bottom surface 112A is provided with a hole 123, and the lower end of the hole 123 is closed by a bottom cover 125. The first end portion 122A of the pivot 122 has a screw hole 126. The screw hole 126 is located in the hole 123 and is fixed to the bottom cover 125 by a screw 128. The screw 128 is disposed on the bottom cover 125 and screwed to the screw hole 126.

The second coupling member 124 includes a sleeve 130, a cover 132 and a brake lock 134. The sleeve 130 is an elongated hollow body and has a cavity 136 therein. The pivot 122 is pivotally coupled to the cavity 136 of the sleeve 130 through bearings 137A and 137B. The bearing 137A is located near the upper end 130A of the sleeve 130, and the shaft The bearing 137A is tightly sleeved around the second end 122B of the pivot 122, wherein the second end 122B and the first end 122A are respectively located at opposite ends of the pivot 122. The bearing 137B is sleeved between the first end 122A and the second end 122B of the pivot 122, and the bearing 137B is closely disposed around the pivot 122 and abuts the shoulder 122C of the pivot 122. The lower end of the cavity 136 is closed by a sealing member 138, and the sealing member 138 is securely abutted against one side of the bearing 137B through a collar 139 such that the sealing member 138 and the shoulder 122C of the pivot 122 abut against the bearing 137B, respectively. The opposite sides. The sealing member 138 can prevent dust from entering the cavity 136 from the lower end of the cavity 136 to cause contamination. The upper end portion 130A of the sleeve 130 is closed by the lid body 132, and the lid body 132 is fixed to the upper end portion 130A of the sleeve 130 by a screw 135.

As shown in FIGS. 3 to 5, an elongated receiving groove 140 is formed in one side portion 130B of the sleeve 130. The rotation lock 134 is coupled to the receiving groove 140 and is slidable up and down along an extending direction parallel to the pivot axis Y. In an embodiment of the invention, the brake lock 134 can be an elongated body that is slidably coupled to the receiving groove 140. The first end portion 134A of the brake lock 134 includes two restriction flanges 142 (see FIG. 4) that are spaced apart from each other at the first end portion 134A, and the two restriction flanges 142 A gap 144 is formed between them. The second end portion 134B and the first end portion 134A of the rotation lock 134 are respectively located at opposite ends of the rotation lock 134, wherein the second end portion 134B is provided with a hook portion 146, and an inner side wall of the sleeve 130 faces the sleeve A rib 147 is protruded from the inside of the 130. The hook portion 146 is detachably fixed to the rib 147 (see Fig. 3). In addition, the brake lock 134 further includes a handle 148 between the first end portion 134A and the second end portion 134B, and the handle 148 extends radially relative to the pivot axis Y so as to be disposed through the first coupling member 117. Slot 119 (see Figure 1). When the user pulls the handle 148 down or up, the brake lock 134 can slide down to a first position (see the dashed line in Figure 7) or slide up to a second position (see Figure 7 solid line). A bump 162 is further disposed in the recess 112 of the base 102. When the seat frame 104 and the base 102 are in the assembled state, the rotation lock 134 can be in the first position, so that the restriction flange 142 of the rotation lock 134 is close to the two sides of the projection 162, so that the seat frame 104 cannot be phase The pivot 122 of the base 102 is rotated. When the seat frame 104 and the base 102 are in the assembled state and the rotation lock 134 is in the second position, the restriction flange 142 of the rotation lock 134 is located in the gap above the projection 162, so that the seat frame 104 can be opposite to the base The pivot 122 of 102 rotates.

Referring again to FIGS. 4 and 5, the second coupling member 124 further includes a latch member 150. The latch member 150 is disposed outside the second coupling member 124. According to an embodiment of the invention, the latching member 150 can include a tongue 152. The tongue 152 extends downwardly from the cover 132, and a latching flange 154 is protruded outwardly from the tongue 152. The rim 154 extends radially from the pivot axis Y. The first coupling member 117 is provided with an opening 156. Since the tongue portion 152 extends downward from the cover body 132 into a cantilever structure, the elastic force of the cantilever structure of the tongue portion 152 in the radial direction of the pivot axis Y can be engaged or disengaged from the opening 156 (see the seventh embodiment). Figure). When the latching member 150 is engaged with the hole 156, the engaging flange 154 can abut against the edge of the hole 156 such that the first coupling member 117 is lockedly coupled to the second coupling member 124.

As shown in Fig. 5, the sleeve 130 has a lower end portion 130C. The lower end portion 130C and the upper end portion 130A are respectively located on opposite sides of the sleeve 130, and the lower end portion 130C is provided with two opposite and spaced sleeve flanges 158 (only one of which is shown in FIG. 5), and The two sleeve flanges 158 are in different radial positions, respectively. When the seat frame 104 assembled to the base 102 rotates and drives the sleeve 130, any of the sleeve flanges 158 can abut against the stop member in the recess 112 (as shown in FIG. 6) to limit the seat frame. The maximum angle of rotation of 104.

FIG. 6 is an enlarged schematic view showing the internal structure of the recess 112 in the base 102. The side wall 112B of the recess 112 is approximately cylindrical. A bump 162 that can abut the twist lock 134 and prevent rotation of the seat frame 104 is protruded upward from the bottom surface 112A of the recess 112. A cushion 164 is fixed to the bottom surface 112A, and the cushion 164 and the bump 162 are located in opposite positions in the recess 112. A cushion 164 is located between the two sleeve flanges 158. When any of the sleeve flanges 158 abuts against the cushion 164, the elasticity of the material of the cushion 164 itself can buffer the force of the two sleeve flanges 158 colliding with the cushion 164, thereby preventing the frame 104 from continuing. Rotate in the same direction.

It should be noted that the cushion 164 may also be changed to an elastic member according to other embodiments (ie, the cushion 164 is composed of, for example, an elastic material). When the sleeve flange 158 is pressed against the elastic member, the elastic member generates an elastic force. When one of the sleeve flanges 158 abuts the first side of the cushion 164, the cushion 164 deforms and generates a reaction force that causes the seat frame 104 to rotate in the reverse direction. Thus, the seat frame 104 can be rotated in the reverse direction until the other sleeve flange 158 abuts against the second side of the cushion 164 and again generates a reaction force, causing the seat frame 104 to rotate toward the first side of the cushion 164. . Thus, the chair frame 104 can be acted upon with respect to the cushion 164, causing the seat frame 104 to perform a reciprocating rotational motion, thereby providing an entertaining environment for the child.

An exemplary operation of the seat structure 100 will be described later in conjunction with FIGS. 3 through 7. The user can slide the first coupling member 117 on the second coupling member 124 of the pivoting assembly 106 so that the seat frame 104 is assembled to the base 102. As shown in FIG. 7 , as the first coupling member 117 is sleeved on the second coupling member 124 , the latching member 150 can be engaged with the hole 156 of the first coupling member 117 to connect the first coupling member 117 and the second portion. The coupling members 124 are lockedly coupled to each other to secure the seat frame 104 to the base 102. In addition, the first coupling member 117 and the second coupling member 124 can be further advanced by the coupling of the handle 148 to the slot 119 of the first coupling member 117 and the coupling of the receiving slot 140 and the slot 119. The ground is coupled to each other. If the user needs to rotate the seat frame 104, the rotation lock 134 is moved upward in a direction away from the base 102 until the hook portion 146 of the rotation lock 134 is hooked by the second coupling member 124 to the sleeve 130 through its own elasticity. The ribs 147 are positioned to secure the brake lock 134 to a higher position (e.g., the second position indicated by the solid line in FIG. 7). When the brake lock 134 is in this position, the restraining flange 142 of the brake lock 134 is located in the gap above the projection 162 to disengage from the restriction of the projection 162. When the seat frame 104 rotates relative to the base 102, the first coupling member 117 and the second coupling member 124 locked together can be rotated in the same direction about the pivot 122. In particular, the phase of the side wall of the slot 119 of the first coupling member 117 by the handle 148 The mutual contact and the engaging flange 154 abut against the hole 156, so that the first coupling member 117 is locked and coupled to the second coupling member 124, and the rotation of the seat frame 104 relative to the base 102 can be transmitted by the first coupling member 117. To the second coupling member 124.

If the user wants to lock the seat frame 104 to the base 102, the chair frame 104 must first be in a position such that the handle 148 is aligned with the projection 162. The user pulls the handle 148 downward to cause the hook portion 146 to be disengaged by the rib 147, and then the brake lock 134 can be slid down to a lower position (for example, the first position indicated by a broken line in FIG. 7). The bumps 162 are engaged with the notches 144 between the restriction flanges 142. When the brake lock 134 is in this position, the two restriction flanges 142 are located adjacent to the opposite side walls of the projection 162, respectively. Therefore, as long as any one of the limiting flanges 142 abuts the bumps 162, the second coupling member 124, the first coupling member 117, and the seat frame 104 locked with the first coupling member 117 cannot be aligned with respect to the pivot axis. Y is rotated.

When the user does not use the seat structure 100, the user can push the engagement flange 154 of the latch 150 such that the tongue 152 flexes inwardly to disassemble the seat structure 100. Therefore, when the engaging flange 154 moves in the radial direction of the pivot 122 and disengages from the hole 156, the first coupling member 117 and the second coupling member 124 release the locking connection with each other. Then, the chair frame 104 and the first coupling member 117 fixed to the seat frame 104 can be pulled upward to disengage the seat frame 104 and the first coupling member 117 from the base 102 and the pivoting assembly 106. Thereby, the seat frame 104 and the base 102 can be separately stored.

The seat structure and the assembling method thereof provided by the invention have at least the following advantages: the seat frame can be conveniently assembled to the base or detached from the base. In this way, the seat frame can be closely packed, thus reducing the space required to store the seat structure. In addition, when the seat frame is connected to the base, the specific structural design can drive the seat frame to rotate or prevent the rotation of the seat frame, so that the seat is safer to use.

The above description is based on a number of different embodiments of the invention, wherein the features may be implemented in a single or different combination. Therefore, the disclosure of the embodiments of the present invention is illustrative The specific embodiments of the present invention are not limited to the disclosed embodiments. Further, the foregoing description and the accompanying drawings are merely illustrative of the invention and are not limited. Variations or combinations of other elements are possible and are not intended to limit the spirit and scope of the invention.

100‧‧‧Seat structure

102‧‧‧Base

104‧‧‧ Chair frame

106‧‧‧ pivot assembly

108‧‧‧Support rod

110‧‧‧Connecting Department

112‧‧‧ Groove

112A‧‧‧ bottom

112B‧‧‧ Sidewall

114‧‧‧Body structure

115‧‧‧ bracket

117‧‧‧First coupling

117A‧‧‧ outer cup

117B‧‧‧ inner cup

119‧‧‧ slotting

122‧‧‧ pivot

122A‧‧‧First end

122B‧‧‧second end

122C‧‧‧Shoulder

123‧‧‧ hole

124‧‧‧Second coupling

125‧‧‧ bottom cover

126‧‧‧ screw holes

128‧‧‧ screws

130‧‧‧ sleeve

130A‧‧‧Upper

130B‧‧‧ side

132‧‧‧ cover

134‧‧‧turn lock

134A‧‧‧First end

134B‧‧‧second end

136‧‧‧ cavity

137A‧‧‧ bearing

137B‧‧‧ bearing

138‧‧‧ sealing element

139‧‧‧ collar

140‧‧‧ accommodating slots

142‧‧‧Limited flange

144‧‧ ‧ gap

146‧‧‧ hook

147‧‧‧ ribs

148‧‧‧Handle

150‧‧‧Latch

152‧‧ ‧Tongue

154‧‧‧ snap flange

158‧‧‧Sleeve flange

156‧‧‧ openings

162‧‧‧Bumps

164‧‧‧ cushion

1 is a perspective exploded view of a seat structure according to an embodiment of the present invention.

2 is a perspective assembled view of a seat structure according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view showing the pivoting assembly of the present invention assembled with the base and the first coupling member.

Fig. 4 is a perspective exploded view of the pivoting assembly shown in Fig. 3.

FIG. 5 is a perspective view of the pivotal assembly shown in FIG. 4.

Fig. 6 is an enlarged schematic view showing the base shown in Fig. 1.

Fig. 7 is a schematic view showing the operation of the seat structure shown in Fig. 1.

100‧‧‧Seat structure

102‧‧‧Base

104‧‧‧ Chair frame

106‧‧‧ pivot assembly

108‧‧‧Support rod

110‧‧‧Connecting Department

112‧‧‧ Groove

114‧‧‧Body structure

115‧‧‧ bracket

117‧‧‧First coupling

119‧‧‧ slotting

148‧‧‧Handle

Claims (20)

A seat structure includes: a seat frame having a first coupling member; and a base including a pivot and a second coupling member coupled to the base and partially received by the second coupling The second coupling member is pivotally connected to the pivot, wherein the second coupling member comprises a latching member, and the latching member can be the first coupling member when the seat frame is assembled to the base Locked to the second coupling member, and the latch member is unlocked to detach the seat frame from the base; wherein the first and second coupling members are locked by the latch member, the chair The first coupling member and the second coupling member are synchronously rotatable relative to the pivot; the first coupling member and the second coupling member are detached when the seat frame and the first coupling member are detached from the base The phases are separated, and the second coupling member and the pivot are maintained on the base. The seat structure of claim 1, wherein the first coupling member comprises a hole, the latch member being engageable with the hole to lock the first coupling member and the second coupling member . The seat structure of claim 2, wherein the latch member includes a resilient tongue and a snap flange, the snap flange protruding from the tongue when the latch member When the first coupling member is locked to the second coupling member, the engaging flange is engaged with the hole. The seat structure of claim 3, wherein the tongue is radially bendable relative to the pivot so that the latch engages or locks. The seat structure of claim 4, wherein the second coupling member further comprises a rotation lock, the rotation lock being movable in a direction parallel to the extension of the pivot to be in the seat frame group When the base is attached, the seat frame can be prevented or allowed to rotate about the pivot. The seat structure of claim 5, wherein the second coupling member comprises a sleeve, the sleeve is provided with a receiving groove, and the rotation lock is slidably disposed in the receiving groove in. The seat structure of claim 5, wherein the rotary lock comprises a handle, the first coupling member is provided with a slot, and when the frame is assembled to the base, the handle is opposite to the pivot The shaft projects radially outward of the slot. The seat structure of claim 7, wherein the rotation of the seat frame relative to the base is performed by the first contact by the handle and the side wall of the slot of the first coupling member The coupling member is driven to the second coupling member. The seat structure of claim 5, wherein the twist lock has a first end portion, the first end portion includes a plurality of limiting flanges, and the base is provided with a protrusion when the turning lock is oriented When the base moves to reach a first position to prevent rotation of the seat frame, the positions of the restricting flanges are close to opposite sides of the bump. The seat structure of claim 5, wherein the twist lock has a second end, the second end portion includes a hook portion, and the brake lock is moved away from the base to reach a second position The hook portion is detachably fixedly coupled to the second coupling member when the rotation of the seat frame is permitted. The seat structure of claim 1, wherein the second coupling member is pivotally coupled to the pivot through at least one bearing. The seat structure of claim 1, wherein the base comprises a cushion, and the second coupling member is provided with a plurality of sleeve flanges, the sleeve flanges abutting the cushion so that Limit the range of rotation of the chair frame. The seat structure of claim 1, wherein the interior of the first coupling member is hollow, and when the seat frame is coupled to the base, the second coupling member can be received in the first coupling member. Inside. A method of assembling and disassembling a seat structure, wherein the seat structure comprises a seat frame and a base, and the method comprises: providing a chair frame, wherein the frame frame has a first coupling member, and the first coupling The piece is provided with a hole; Providing a base, wherein the base has a pivot, and the pivot is pivotally connected to a second coupling member and partially received in the second coupling member, wherein the second coupling member includes a latch member; The first coupling member is disposed on the second coupling member, so that the latching member is engaged with the hole, and the first coupling member is locked with the second coupling member, thereby assembling the seat frame to the base. After the first coupling member is locked with the second coupling member, the seat frame, the first coupling member and the second coupling member are synchronously rotatable relative to the pivot; operating the latch member to a coupling member and the second coupling member are unlocked; and the seat frame and the first coupling member are detached from the base and the second coupling member, wherein the seat frame and the first coupling member are separated from the base The second coupling member and the pivot are maintained on the base. The assembly and disassembly method of claim 14, wherein the latch member includes a resilient tongue and a snap flange, the snap flange protruding from the tongue when the latch When the locking member locks the first coupling member to the second coupling member, the engaging flange is engaged with the hole. The method of assembling and disassembling according to claim 15 , further comprising: moving the engaging flange along a radial direction of the pivot to unlock the first coupling member and the second coupling member; The base is moved away from the chair frame. The assembly and disassembly method of claim 14, wherein the second coupling member further comprises a rotation lock, the rotation lock is movable in a direction parallel to the pivot, and the rotation lock is The handle includes a handle, and the first coupling member is provided with a slot, and the handle protrudes out of the slot along a radial direction of the pivot. The method of assembling and disassembling according to claim 17, further comprising: moving the brake lock toward the base until a plurality of restriction flanges provided on the first end of the brake lock are located close to each other a projection of the base to prevent the frame relative to The rotation of the base. The method of assembling and disassembling according to claim 18, further comprising: moving the rotation lock away from the base until the hook provided on the second end of the rotation lock is engaged with the first Two coupling members to allow the seat frame to rotate relative to the base about the pivot. The assembly and disassembly method of claim 19, wherein the step of moving the tactile lock away from the base causes the plurality of restriction flanges to be disengaged from the protrusion, so that the frame can be relative to the The base rotates.