An umbrella frame

Abstract

The utility model discloses a rib frame, including center pole, top rod, support rod and sliding element, the sliding element with center pole slidingly connected, the proximal end of top rod with center pole rotatory connection, the proximal end of support rod with sliding element rotatory connection, the distal end of support rod with top rod rotatory connection, the rib frame has first state, under first state, the distal end of top rod and the distal end of support rod are contracted respectively to center pole, the rib frame still includes elastic element, under first state, the elastic element sets up between top rod and support rod, and the elastic element is used to provide the action force of driving the support rod with top rod relative rotation to make the distal end of support rod and the distal end of top rod at least partial far away center pole, and elastic element can simplify the operation of user, and bring the convenience for the use of user.

Description

Technical Field

[0001] This utility model relates to an umbrella frame. Background Technology

[0002] An umbrella, a common tool used to shield from sun, rain, and snow, typically consists of a frame including a center pole, a top pole, support poles, and a sliding member. The sliding member is slidably mounted on the center pole. The top pole is rotatably connected to the upper part of the center pole, and the support pole is rotatably connected between the top pole and the sliding member. When the umbrella frame is folded, the sliding member slides downwards along the center pole, causing the support pole to rotate relative to the center pole. The support pole, in turn, causes the top pole to rotate relative to the center pole. This, in turn, drives the sliding member to slide upwards, thus unfolding the umbrella frame.

[0003] To minimize the volume of the umbrella frame when folded, the structural design aims to bring the support rods as close to the central rod as possible in the folded state. However, this also results in some umbrella frames having the rotational connection point between the support rod and the top rod located on the side closer to the central rod along the line connecting the rotational connection point between the top rod and the central rod and the rotational connection point between the support rod and the slider. Consequently, when the user pushes the slider upwards to unfold the umbrella frame, the support rods tend to move closer to the central rod instead of unfolding outwards, causing the umbrella frame to jam. This necessitates adjustments to the support rods and top rods before the umbrella frame can be unfolded, causing significant inconvenience. Utility Model Content

[0004] The purpose of this invention is to provide a new umbrella frame.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an umbrella frame, comprising a central rod, a top rod, a support rod, and a sliding member, wherein the sliding member is slidably connected to the central rod, the proximal end of the top rod is rotatably connected to the central rod, the proximal end of the support rod is rotatably connected to the sliding member, and the distal end of the support rod is rotatably connected to the top rod; the umbrella frame has a first state, in which the distal ends of the top rod and the distal ends of the support rod are respectively retracted relative to the central rod.

[0006] The umbrella frame also includes an elastic element. In the first state, the elastic element is disposed between the top rod and the support rod. The elastic element is used to provide a force that drives the support rod and the top rod to rotate relative to each other so that the distal ends of the support rod and the distal ends of the top rod are at least partially away from the central rod.

[0007] In some embodiments, a first pivot point is provided between the top rod and the center rod, a second pivot point is provided between the support rod and the top rod, and a third pivot point is provided between the support rod and the sliding member; in the first state, the second pivot point is located on the side of the line connecting the first pivot point and the third pivot point closer to the center rod; the umbrella frame also has a second state, in which the second pivot point is located on the side of the line connecting the first pivot point and the third pivot point away from the center rod; the elastic member is used to provide the force required to drive the support rod and the top rod to rotate relative to each other so that the umbrella frame can switch from the first state to the second state.

[0008] In some embodiments, the elastic element includes a spring, which is in a compressed state in the first state.

[0009] In some embodiments, the elastic element includes a torsion spring, wherein in the first state, the two torsion arms of the torsion spring are pressed between the top rod and the support rod.

[0010] In some embodiments, the top rod includes a rod body and a connector. The rod body is rotatably connected to the central rod. The length direction of the rod body intersects the length direction of the connector. The connector extends from the rod body toward the central rod. One end of the connector away from the rod body is rotatably connected to the support rod. In the first state, the support rod is close to the rod body, and the elastic element is disposed between the connector and the support rod.

[0011] In some embodiments, one end of the support rod is provided with a connecting groove and a mounting cavity, the connector is movably inserted into the connecting groove and rotatably connected to the support rod, and the elastic element is movably disposed in the mounting cavity; the support rod is provided with a through hole communicating the connecting groove and the mounting cavity, and in the first state, at least a portion of the elastic element extends from the through hole into the connecting groove and abuts against the connector.

[0012] In some embodiments, the outer periphery of the connector has a smoothly extending sliding surface, and the connector is provided with a protrusion extending outward from the sliding surface. In the first state, the elastic element is disposed between the protrusion and the support rod.

[0013] In some embodiments, a second pivot point is provided between the top rod and the support rod, and the sliding surface is an arc surface extending around the second pivot point.

[0014] In some embodiments, the umbrella frame has an unfolded state, in which the top rod unfolds relative to the central rod, a shielding space is formed below the top rod, and the elastic element abuts against the sliding surface.

[0015] In some embodiments, one end of the connector is inserted into the rod cavity of the rod body and fixedly connected to the rod body, and the other end of the connector extends away from the rod body; the connector has a first abutting surface and a second abutting surface, the first abutting surface abuts against the outer side of the rod body, and the second abutting surface abuts against the inner cavity wall of the rod body, and the first abutting surface and the second abutting surface are respectively disposed on opposite sides of the connector.

[0016] In some embodiments, the top rod further includes a locking member, which is inserted into the rod cavity of the rod body and fixedly connected to the rod body; a portion of the connecting member is inserted into the rod cavity of the rod body, the connecting member having a first side and a second side disposed on opposite sides of itself; in the first state, the first side abuts against the locking member, and the elastic member is disposed between the second side and the support rod.

[0017] In some embodiments, the first side portion is provided with a fixing groove, and the locking member has a plug-in portion that is inserted into the fixing groove.

[0018] In some embodiments, the locking member includes two spaced-apart limiting portions, and the connector is inserted between the two limiting portions.

[0019] In some embodiments, the first side portion and the second side portion are respectively disposed on both sides of the connector along a first direction, and the two limiting portions are disposed at intervals along a second direction, wherein the first direction and the second direction are perpendicular to each other; the insertion portion is disposed between the two limiting portions.

[0020] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The umbrella frame of this utility model is provided with an elastic element. In the first state, the top rod, support rod, and center rod are retracted to each other, and the elastic element is located between the support rod and the top rod. When the first state is released, driven by the force of the elastic element, the top rod and support rod rotate relative to each other and unfold, thereby enabling the top rod and support rod to unfold relative to the center rod. In this way, the state of the umbrella frame changes automatically without user operation, simplifying user operation and bringing convenience to users. Attached Figure Description

[0021] Appendix Figure 1 This is a schematic diagram of the umbrella frame in a first state according to a specific embodiment of the present invention;

[0022] Appendix Figure 2 For the appendix Figure 1 A schematic diagram of a set of top rods and support rods;

[0023] Appendix Figure 3For the appendix Figure 2 A sectional view;

[0024] Appendix Figure 4 For the appendix Figure 3 Enlarged view of point A in the middle;

[0025] Appendix Figure 5 For the appendix Figure 2 A schematic diagram of local decomposition;

[0026] Appendix Figure 6 This is a schematic diagram of the umbrella frame in a second state according to a specific embodiment;

[0027] Appendix Figure 7 For the appendix Figure 6 A schematic diagram of a set of top rods and support rods;

[0028] Appendix Figure 8 For the appendix Figure 7 A sectional view;

[0029] Appendix Figure 9 For the appendix Figure 8 Enlarged view of point B in the middle;

[0030] Appendix Figure 10 This is a schematic diagram of an umbrella frame in an unfolded state according to a specific embodiment.

[0031] Appendix Figure 11 This is a cross-sectional view of the top rod and the support rod in another embodiment of the present invention;

[0032] Appendix Figure 12 For the appendix Figure 11 Enlarged view of point C in the middle;

[0033] Appendix Figure 13 This is a partially exploded view of the top rod and support rod according to another embodiment;

[0034] The components are as follows: 1. Center rod; 2. Top rod; 21. Rod body; 211. Insertion hole; 22. Connector; 22a. Connecting part; 22b. Fixing part; 221. Driving surface; 222. Sliding surface; 223. Protrusion; 224. First abutting surface; 225. Second abutting surface; 226. Fixing groove; 227. Guide surface; 23. Locking component; 231. Limiting part; 232. Insertion part; 3. Support rod; 31. Main body; 32. Connecting seat; 321. Connecting groove; 322. Mounting cavity; 323. Mounting port; 4. Sliding component; 5. Elastic component; 51. Spring; 52. Push head; 53. Torsion spring; 6. Screw. Detailed Implementation

[0035] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments, so that the advantages and features of this utility model can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only a part of the embodiments, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application.

[0036] Example 1: See Figure 1 , Figure 6 and Figure 10 The umbrella frame shown includes a central rod 1, a top rod 2, a support rod 3, and a sliding member 4. The sliding member 4 is slidably connected to the central rod 1. The proximal end of the top rod 2 is rotatably connected to the central rod 1. The proximal end of the support rod 3 is rotatably connected to the sliding member 4, and the distal end of the support rod 3 is rotatably connected to the top rod 2. The top rod 2, support rod 3, and sliding member 4 form a crank-slider mechanism. By driving the sliding member 4 to slide along the central rod 1, the support rod 3 can be driven to expand or retract relative to the central rod 1, thereby causing the top rod 2 to expand or retract relative to the central rod 1.

[0037] In this embodiment, the umbrella frame has a first state in which the distal ends of the top rod 2 and the support rod 3 are respectively folded relative to the central rod 1. The umbrella frame also includes an elastic element 5. In the first state, the elastic element 5 is disposed between the top rod 2 and the support rod 3. The elastic element 5 is used to provide a force that drives the support rod 3 and the top rod 2 to rotate relative to each other, so that the distal ends of the support rod 3 and the top rod 2 are at least partially moved away from the central rod 1. In this embodiment, the first state is the folded state of the umbrella frame. In this state, the top rod 2 and the support rod 3 are folded relative to the central rod 1, effectively reducing the volume of the umbrella frame, thus facilitating storage and organization. When the first state is released, without any user operation, the support rod 3 and the top rod 2 rotate relative to each other under the drive of the elastic element 5, causing the support rod 3 and the top rod 2 to unfold relative to each other, and the distal ends of the support rod 3 and the top rod 2 to unfold relative to the central rod 1, thus changing the state of the umbrella frame. The setting of the elastic element 5 simplifies the user's operation and achieves the effect of user convenience.

[0038] In this embodiment, a first pivot point a is provided between the top rod 2 and the center rod 1, a second pivot point b is provided between the support rod 3 and the top rod 2, and a third pivot point c is provided between the support rod 3 and the sliding member 4. In this embodiment, in the first state, see... Figure 1 and Figure 2 As shown, the top rod 2 and the support rod 3 converge relative to the central rod 1, and the second pivot point b is located on the side of the line connecting the first pivot point a and the third pivot point c, closer to the central rod 1. The umbrella frame also has a second state, which is described in detail below. Figure 6 and Figure 7As shown, the second pivot point b is located on the side away from the center rod 1, along the line connecting the first pivot point a and the third pivot point c. The elastic element 5 provides the force required to drive the support rod 3 and the top rod 2 to rotate relative to each other, so that the umbrella frame can transition from the first state to the second state.

[0039] In this embodiment, the top rod 2 includes a rod body 21 and a connector 22. The rod body 21 is rotatably connected to the central rod 1. The length direction of the rod body 21 intersects the length direction of the connector 22. The connector 22 extends from the rod body 21 toward the central rod 1, and the end of the connector 22 away from the rod body 21 is rotatably connected to the support rod 3. In the first state, the support rod 3 and the rod body 21 are close to each other, and the elastic element 5 is disposed between the connector 22 and the support rod 3. By setting the connector 22, in the first state, that is, in the folded state, the support rod 3 can remain basically parallel to the central rod 1, thereby making the support rod 3 and the central rod 1 close together, effectively reducing the distance between the support rod 3 and the central rod 1, and further reducing the volume of the umbrella frame in this state. However, this also causes the second turning point b to be closer to the central rod 1 in the first state relative to the first turning point a and the second turning point b, see [reference]. Figure 2 As shown, in this state, the support rod 3 extends inclined from the sliding member 4 towards the central rod 1. If the user drives the sliding member 4 to move along the central rod 1 to unfold the umbrella frame, the support rod 3 will tend to move closer to the central rod 1, but will not unfold relative to the central rod 1, thus preventing the top rod 2 from unfolding relative to the central rod 1. Therefore, without performing other operations, the user cannot unfold the umbrella frame using the sliding member 4; the user must manually adjust the states of the support rod 3 and the top rod 2 before the umbrella frame can be unfolded.

[0040] See Figure 2 As shown, in the first state, the second pivot point b is at a dead point position, and the umbrella frame cannot be driven to unfold by the slider 4. As the second pivot point b moves away from the central rod 1, when the first pivot point a, the second pivot point b, and the third pivot point c are on the same straight line, the second pivot point b is at a dead point position. The top rod 2, the support rod 3, and the slider 4 are in a critical state. In this state, it is still difficult to drive the support rod 3 to rotate relative to the central rod 1 by the slider 4, or it is possible to drive the support rod 3 to rotate relative to the central rod 1, but the direction of rotation of the support rod 3 cannot be controlled. When the second pivot point b continues to move and moves to the side away from the central rod 1 on the line connecting the first pivot point a and the third pivot point c, the top rod 2, the support rod 3, and the slider 4 break through the critical state, and the umbrella frame transitions to the second state. In the second state, the support rod 3 extends from the slider 4 in a direction away from the central rod 1, see [link to relevant documentation]. Figure 7As shown, the support rod 3 extends outward at an angle from bottom to top. In this state, the user can drive the support rod 3 to rotate relative to the sliding member 4 by driving the sliding member 4, and drive the support rod 3 to unfold outward relative to the center rod 1, thereby driving the top rod 2 to unfold relative to the center rod 1, and thus unfolding the umbrella frame.

[0041] In this embodiment, after the umbrella frame is released from its first state, the support rod 3 and the top rod 2 can rotate relative to each other under the force of the elastic element 5, causing them to unfold relative to each other, while the support rod 3 unfolds relative to the center rod 1. The user does not need to perform any operation; under the action of the elastic element 5, the umbrella frame can automatically transition from the first state to the second state. After the umbrella frame transitions to the second state, the user can unfold the umbrella frame by driving the sliding element 4 to slide.

[0042] In this embodiment, both the top rod 2 and the support rod 3 include multiple rods spaced apart around the central rod 1, and the umbrella frame is in an unfolded state. See [link / reference]. Figure 10 As shown, in the unfolded state, multiple top rods 2 unfold relative to the central rod 1, forming a sheltered space below the multiple top rods 2. By connecting the umbrella fabric to the top rods 2, in the unfolded state, at least part of the umbrella fabric covers the top rods 2, and the umbrella fabric and the umbrella frame together constitute a folding umbrella.

[0043] In this embodiment, the second state is an intermediate state between the folded state and the unfolded state. When the umbrella frame transitions from the first state to the second state, the support rod 3 and the top rod 2 unfold relative to the center rod 1, and the sliding member 4 slides relative to the center rod 1. After the umbrella frame transitions to the second state, the user drives the sliding member 4 to continue transitioning the umbrella frame to the unfolded state. In some embodiments, the second state is the unfolded state, and the umbrella frame can be fully unfolded under the action of the elastic member 5.

[0044] In this embodiment, the elastic element 5 includes a spring 51. When the umbrella frame is in the first state, the spring 51 is located between the top rod 2 and the support rod 3 and is in a compressed state. When the first state is released, the force of the spring 51 to restore its original shape drives the top rod 2 and the support rod 3 to rotate relative to each other.

[0045] In this embodiment, the elastic element 5 further includes a push head 52 driven by a spring 51. The second pivot point b is located on one side of the movement path of the push head 52, and the movement direction of the push head 52 does not pass through the second pivot point b, thereby driving the push rod 2 and the support rod 3 to rotate around the second pivot point b. The push head 52 facilitates the application of pushing force. In some embodiments, the push head 52 is fixedly connected to one end of the spring 51. See also: Figure 5As shown, the elastic element 5 consists of a spring 51 and a rivet with an end cap. The spring 51 drives the rivet to move, and the rivet's shaft is inserted into the spring 51, achieving a plug-in connection on one hand, and guiding the rivet's movement on the other hand by cooperating with the spring 51. The end cap of the rivet abuts against one end of the spring 51, and the end cap of the rivet constitutes the aforementioned push head 52.

[0046] In some embodiments, the elastic element 5 is disposed on the push rod 2. Specifically, the push head 52 is movably disposed on the push rod 2, and the spring 51 is disposed between the push head 52 and the push rod 2. In a first state, the push head 52 abuts against the support rod 3. When the first state is released, the push head 52 pushes the support rod 3 away from the push rod 2 under the drive of the spring 51. In other embodiments, the elastic element 5 is disposed on the support rod 3. Specifically, the push head 52 is movably disposed on the support rod 3, and the spring 51 is disposed between the push head 52 and the support rod 3. In a first state, the push head 52 abuts against the push rod 2. When the first state is released, the push head 52 pushes the push rod 2 away from the support rod 3 under the drive of the spring 51. In other embodiments, the elastic element 5 is disposed between the support rod 3 and the push rod 2, and the elastic element 5 is connected to both the support rod 3 and the push rod 2.

[0047] In this embodiment, the connector 22 has a protrusion 223 extending outward from its outer periphery. In the first state, the protrusion 223 approaches the elastic member 5, and the elastic member 5 is compressed between the protrusion 223 and the support rod 3. During the transition from the first state to the second state, the elastic member 5 drives the connector 22 to rotate relative to the support rod 3 by pushing the protrusion 223. Specifically, the protrusion 223 has a driving surface 221 facing the support rod 3. In the first state, the push head 52 abuts against the driving surface 221. During the transition from the first state to the second state, the push head 52 pushes the driving surface 221, thereby driving the connector 22 to rotate relative to the support rod 3.

[0048] In this embodiment, the outer periphery of the connector 22 has a smoothly extending sliding surface 222. Specifically, the sliding surface 222 extends around the second pivot point b, and the protrusion 223 extends outward from the sliding surface 222. When the umbrella frame transitions to the first state, the elastic member 5 can slide along the sliding surface 222 until it abuts against the protrusion 223. Simultaneously, during the unfolding of the umbrella frame, the elastic member 5 pushes the protrusion 223. When the support rod 3 and the top rod 2 unfold to a certain angle, the elastic member 5 disengages from the protrusion 223 and abuts against the sliding surface 222. As the support rod 3 and the top rod 2 continue to rotate and unfold, the elastic member 5 slides along the sliding surface 222. When the umbrella frame is in the unfolded state, the elastic member 5 abuts against the sliding surface 222. In this embodiment, the sliding surface 222 is an arcuate surface extending around the second pivot point b. During the sliding process of the push head 52 along the sliding surface 222, the elastic member 5 can maintain its unchanged state. In some embodiments, the support rod 3 is provided with a protrusion, and the elastic element 5 is movably disposed on the top rod 2.

[0049] In this embodiment, a connecting seat 32 is provided at one end of the support rod 3. The connecting seat 32 has a connecting groove 321 and a mounting cavity 322, and the connecting seat 32 also has a through hole communicating with the mounting cavity 322 and the connecting groove 321. The connecting member 22 is movably inserted into the connecting groove 321 and rotatably connected to the support rod 3, and the elastic member 5 is movably disposed in the mounting cavity 322. When the umbrella frame is in the first state, the protrusion 223 moves towards the through hole, and at least part of the elastic member 5 can extend from the through hole into the connecting groove 321 and abut against the connecting member 22. When the first state is released, the elastic member 5 drives the protrusion 223 away from the through hole and drives the umbrella frame to switch to the second state.

[0050] In this embodiment, the connecting seat 32 includes two spaced-apart connecting joints, with the connecting groove 321 formed between the two connecting joints. In this embodiment, the connecting member 22 is plate-shaped and is inserted between the two connecting joints. The connecting groove 321 prevents relative displacement between the support rod 3 and the connecting member 22 along the thickness direction of the connecting member 22, thereby improving the stability of the rotational connection. In this embodiment, the support rod 3 includes a main body 31, and the connecting seat 32 is fixedly connected to one end of the main body 31. Specifically, the connecting seat 32 is inserted into the cavity located at one end of the main body 31, and the connecting seat 32 and the main body 31 are fixedly connected by screws 6.

[0051] In this embodiment, see Figure 5As shown, the connecting seat 32 has a mounting port 323 that communicates with the mounting cavity 322, and the elastic member 5 can be assembled into the mounting cavity 322 through the mounting port 323. When the connecting seat 32 is fixedly connected to the main body 31, the mounting port 323 is blocked by the cavity wall of the main body 31 located on the outside. In this way, the elastic member 5 is in a relatively closed space, which can prevent the elastic member 5 from falling out of the mounting port 323, prevent the elastic member 5 from being affected by the outside, and also prevent the elastic member 5 from being contaminated.

[0052] In this embodiment, see Figure 4 , Figure 9 As shown, the connector 22 has a fixedly disposed connecting portion 22a and a fixing portion 22b. The fixing portion 22b is inserted into the rod cavity of the rod body 21 and fixedly connected to the rod body 21. The connecting portion 22a extends from the fixing portion 22b away from the rod body 21 and is rotatably connected to the support rod 3. Specifically, the side wall of the rod body 21 is provided with an insertion hole 211, and the fixing portion 22b is inserted into the rod cavity of the rod body 21 through the insertion hole 211. See also Figure 4 , Figure 9 As shown, the connecting part 22a has a first abutting surface 224, and the fixing part 22b has a second abutting surface 225. When the fixing part 22b is inserted into the rod cavity of the rod body 21, the first abutting surface 224 abuts against the outer surface of the rod body 21, and the second abutting surface 225 abuts against the inner cavity wall of the rod body 21. See also Figure 4 , Figure 9 As shown, the first abutment surface 224 and the second abutment surface 225 are respectively disposed on opposite sides of the connector 22. Specifically, in this embodiment, the first abutment surface 224 and the second abutment surface 225 are respectively disposed on opposite sides in the width direction of the connector 22. The first abutment surface 224 and the second abutment surface 225 can improve the stability of the connection between the connector 22 and the rod body 21, and can prevent the connector 22 and the rod body 21 from rotating relative to each other.

[0053] In this embodiment, see Figure 3 , Figure 8 As shown, the top rod 2 also includes a locking member 23, which is disposed in the rod cavity of the rod body 21 and can be fixedly connected to the rod body 21. Specifically, the locking member 23 can be fixedly connected to the rod body 21 by a screw 6. The rod body 21 has a hole for fixing the screw 6 on the side opposite to the central rod 1. See also Figure 5 As shown, the locking member 23 includes two limiting parts 231 spaced apart, and the fixing part 22b is inserted between the two limiting parts 231. The two limiting parts 231 can limit the fixing part 22b, thereby limiting the connection of the connecting member 22 and improving the stability of the connection between the connecting member 22 and the rod body 21.

[0054] In this embodiment, the connector 22 has a first side and a second side disposed on opposite sides. In the first state, the first side abuts against the locking member 23, and the elastic member 5 is disposed between the second side and the support rod 3. Thus, when the elastic member 5 applies a force to the second side, the connector 22 can maintain its stability through the cooperation between the first side and the locking member 23.

[0055] In this embodiment, the first side portion and the second side portion are respectively disposed on both sides of the connector 22 along the first direction. Specifically, the first side portion and the second side portion are disposed on both sides of the connector 22 in the width direction. With the combined cooperation of the first abutment surface 224, the second abutment surface 225 and the first side portion, the connector 22 can be effectively prevented from moving, thereby improving stability. In this embodiment, the two limiting portions 231 are disposed at intervals along the second direction, and the first direction and the second direction are perpendicular to each other. Specifically, the two limiting portions 231 are disposed at intervals along the thickness direction of the connector 22 to limit the displacement of the connector 22 in the thickness direction.

[0056] In this embodiment, a fixing groove 226 is provided on the first side. Specifically, the fixing groove 226 is provided on the fixing part 22b, and the locking member 23 has a plug-in part 232. The plug-in part 232 can be inserted into the fixing groove 226 to fix the connecting member 22. Specifically, the fixing groove 226 extends recessed into the second side. The cooperation between the plug-in part 232 and the fixing groove 226 not only enables the first side to abut against the locking member 23, but also enables the limiting of the length direction of the connecting member 22. In this embodiment, the plug-in part 232 is located between the two limiting parts 231, see [reference]. Figure 4 , Figure 9 As shown, when the fixing part 22b is inserted between the two limiting parts 231, the insertion part 232 is inserted into the fixing groove 226.

[0057] In this embodiment, a guide surface 227 is provided on one side of the fixing part 22b. The guide surface 227 extends obliquely from the inside of the rod body 21 to the outside. Specifically, the guide surface 227 extends obliquely outward from the inside to the outside along the width direction of the connector 22. The guide surface 227 is in contact with the first abutment surface 224, and the junction of the guide surface 227 and the first abutment surface 224 corresponds to the position of one side of the hole wall of the insertion hole 211. See also Figure 4 , Figure 9 As shown, the groove wall of the fixing groove 226 near the connecting part 22a forms a guide surface 227. The fixing groove 226 narrows the width of the connector 22 at the fixing groove 226. The guide surface 227 serves as a transition plane between the fixing part 22b and the connecting part 22a, causing the width of the connector 22 to gradually change along with the guide surface 227. When assembling the connector 22, the fixing part 22b is first inserted into the rod cavity of the rod body 21 through the insertion hole 211. When the fixing part 22b is about to be fully inserted into the rod cavity, see... Figure 3 As shown, the connector 22 is translated along the width direction of the connector 22, which is also the length direction of the rod body 21, so that the second abutment surface 225 moves downward toward the insertion hole 211, thereby abutting against the cavity wall located below the insertion hole 211. The fixing groove 226 provides clearance space, allowing the connector 22 to move along the width direction. The guide surface 227 provides guidance for the movement of the connector 22. The assembler can slide the hole wall of the insertion hole 211 along the guide surface 227 to translate the connector 22 until the hole wall moves to the junction of the guide surface 227 and the first abutment surface 224. The distance from the end of the second abutment surface 225 away from the guide surface 227 along the length direction of the insertion hole 211 to the guide surface 227 is less than the length of the insertion hole 211, so that the connector 22 can pass smoothly through the insertion hole 211.

[0058] In this embodiment, the connection between the connector 22 and the rod body 21 is achieved through the cooperation of the locking member 23 and the first abutment surface 224, the second abutment surface 225, and the fixing groove 226 provided on the connector 22. Only one screw 6 is needed to fix the locking member 23 to the rod body 21, thus limiting the width, length, and thickness of the connector 22. This ensures connection stability while reducing the need for holes, thereby minimizing damage to the rod body 21. Since multiple holes for fixing the screw 6 do not need to be drilled in the rod body 21, there is no need to consider the relative positions of multiple holes or ensure the accuracy of hole drilling, making the umbrella frame production easier and requiring only simple assembly. Furthermore, it reduces the impact of holes on the strength of the rod body 21, improves the stability of the umbrella frame, and better guarantees the quality of the umbrella frame.

[0059] Example 2: See Figures 11 to 13 As shown, the main difference between this embodiment and Embodiment 1 is that in this embodiment, the elastic element 5 includes a torsion spring 53. In the first state, the two torsion arms of the torsion spring 53 are pressed between the top rod 2 and the support rod 3. When the first state is released, the two torsion arms of the torsion spring 53 drive the top rod 2 and the support rod 3 to rotate relative to each other. Specifically, see... Figure 12 As shown, the torsion spring 53 is located at the second pivot point b. One torsion arm of the torsion spring 53 is connected to the connecting seat 32 of the support rod 3, and the other torsion arm of the torsion spring 53 is located on the movement path of the protrusion 223. When the umbrella frame is folded, the protrusion 223 rotates around the second pivot point b. During this process, the protrusion 223 comes into contact with the torsion arm of the torsion spring 53, and as the protrusion 223 continues to move, it pushes the torsion arm of the torsion spring 53 to move together. Thus, when the umbrella frame is switched to the first state, the two torsion arms of the torsion spring 53 come together.

[0060] In summary, in the folded state, the support rod 3 and top rod 2 of this embodiment can be tightly folded together with the central rod 1, resulting in a smaller volume of the umbrella frame in the folded state, making it easy to store and carry. After the folding state is released, under the action of the elastic element 5, the support rod 3 and top rod 2 automatically rotate relative to each other, causing the support rod 3 and top rod 2 to unfold at a certain angle relative to the central rod 1. The support rod 3, top rod 2, and sliding element 4 then break through the critical state, allowing the umbrella frame to transition to the second state. In the second state, the user can easily unfold the umbrella frame by driving the sliding element 4.

[0061] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An umbrella frame, comprising a central pole, a top pole, a support pole, and a sliding member, wherein the sliding member is slidably connected to the central pole, a proximal end of the top pole is rotatably connected to the central pole, a proximal end of the support pole is rotatably connected to the sliding member, and a distal end of the support pole is rotatably connected to the top pole; the umbrella frame has a first state, wherein in the first state, the distal ends of the top pole and the distal ends of the support pole are respectively retracted relative to the central pole, characterized in that: The umbrella frame also includes an elastic element. In the first state, the elastic element is disposed between the top rod and the support rod. The elastic element is used to provide a force that drives the support rod and the top rod to rotate relative to each other so that the distal ends of the support rod and the distal ends of the top rod are at least partially away from the central rod.

2. The umbrella frame according to claim 1, characterized in that: A first pivot point is provided between the top rod and the center rod, a second pivot point is provided between the support rod and the top rod, and a third pivot point is provided between the support rod and the sliding member; in the first state, the second pivot point is located on the side of the line connecting the first pivot point and the third pivot point closer to the center rod; The umbrella frame also has a second state in which the second pivot point is located on the side of the line connecting the first pivot point and the third pivot point away from the central rod; the elastic element is used to provide the force required to drive the support rod and the top rod to rotate relative to each other so that the umbrella frame can switch from the first state to the second state.

3. The umbrella frame according to claim 1, characterized in that: The elastic element includes a spring, which is in a compressed state in the first state; Alternatively, the elastic element may include a torsion spring, in which, in the first state, the two torsion arms of the torsion spring are pressed between the top rod and the support rod.

4. The umbrella frame according to claim 1, characterized in that: The top rod includes a rod body and a connector. The rod body is rotatably connected to the central rod. The length direction of the rod body intersects the length direction of the connector. The connector extends from the rod body to the central rod. The end of the connector away from the rod body is rotatably connected to the support rod. In the first state, the support rod is close to the rod body, and the elastic element is disposed between the connector and the support rod.

5. The umbrella frame according to claim 4, characterized in that: One end of the support rod is provided with a connecting groove and a mounting cavity. The connector is movably inserted into the connecting groove and rotatably connected to the support rod. The elastic element is movably disposed in the mounting cavity. The support rod is provided with a through hole connecting the connecting groove and the mounting cavity. In the first state, at least part of the elastic element extends from the through hole into the connecting groove and abuts against the connecting element.

6. The umbrella frame according to claim 4, characterized in that: The outer periphery of the connector has a smoothly extending sliding surface, and the connector is provided with a protrusion extending outward from the sliding surface. In the first state, the elastic element is disposed between the protrusion and the support rod.

7. The umbrella frame according to claim 6, characterized in that: A second pivot point is provided between the top rod and the support rod, and the sliding surface is an arc surface extending around the second pivot point; And / or, the umbrella frame has an unfolded state, in which the top rod unfolds relative to the center rod, a shielding space is formed below the top rod, and the elastic element abuts against the sliding surface.

8. The umbrella frame according to claim 4, characterized in that: One end of the connector is inserted into the rod cavity of the rod body and fixedly connected to the rod body, and the other end of the connector extends away from the rod body; the connector has a first abutment surface and a second abutment surface, the first abutment surface abuts against the outer side of the rod body, and the second abutment surface abuts against the inner cavity wall of the rod body, and the first abutment surface and the second abutment surface are respectively located on opposite sides of the connector.

9. The umbrella frame according to claim 4, characterized in that: The top rod also includes a locking member, which is inserted into the rod cavity of the rod body and fixedly connected to the rod body; a portion of the connecting member is inserted into the rod cavity of the rod body, and the connecting member has a first side and a second side disposed on opposite sides of itself; in the first state, the first side abuts against the locking member, and the elastic member is disposed between the second side and the support rod.

10. The umbrella frame according to claim 9, characterized in that: The first side portion is provided with a fixing groove, and the locking member has a plug-in portion, which is inserted into the fixing groove; And / or, the locking member includes two spaced-apart limiting portions, and the connecting member is inserted between the two limiting portions.

11. The umbrella frame according to claim 10, characterized in that: The first side portion and the second side portion are respectively disposed on both sides of the connector along a first direction, and the two limiting portions are disposed at intervals along a second direction, wherein the first direction and the second direction are perpendicular to each other; the insertion portion is disposed between the two limiting portions.

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