TW202033242A - Seat adjustment mechanism - Google Patents

Abstract

A seat adjustment mechanism includes a base, a seat post passing through the base, a saddle fixed to one end of the seat post, and a positioning assembly. The positioning assembly includes a positioning shaft tiltedly disposed on the base and having an indented portion formed on a surface toward the seat post. A knob is threaded to one end of the positioning shaft for driving the seat post. When the positioning shaft is located on a locking position, the indented portion of the positioning shaft is abutted against the seat post such that the seat post is fixed for securing the position of the saddle. When the positioning shaft is located at a second position, the indented portion is disengaged from the seat post such that the seat post is movable along the base for adjusting the position of the saddle.

Description

Seat adjustment mechanism

The present invention relates to the seat of sports equipment, and particularly refers to a seat adjustment mechanism with convenient operation and accurate positioning.

For the seats of sports equipment (such as exercise bikes), since each user's body is not the same, the design of a single fixed position can no longer meet the needs of all users. In order to allow users to be correct and comfortable When using sports equipment in a sitting position, the seat with the function of arbitrarily adjusting the position has become an indispensable and important equipment for sports equipment.

However, in the conventional design of the seat, it is nothing more than the use of multi-link driving or bolt locking to achieve the purpose of adjustment and positioning. However, the structure of these adjustment methods is quite complicated, and the operation is also very time-consuming and laborious. It is not very convenient for users.

The main purpose of the present invention is to provide a seat adjustment mechanism, which has the characteristics of simple structure, convenient operation and reliable positioning.

In order to achieve the above main objective, the seat adjusting mechanism of the present invention includes a tube, a rod, and a positioning assembly. The seat post is displaceable back and forth through the seat tube and is connected to a cushion at one end; the positioning assembly has a positioning rod and a knob, and the positioning rod is obliquely displaceable through the seat tube and has a Facing the concave portion of the seat post, the knob is screwed to one end of the positioning rod for driving the positioning rod to move relative to the seat post between a positioning position and a release position. When the positioning rod is at the positioning position, The recess of the positioning rod presses the seat post so that the seat post cannot move back and forth relative to the seat tube. At this time, the position of the seat cushion is fixed. When the positioning rod is in the release position, the recess of the positioning rod becomes loose. Put the seat post so that the seat post can move back and forth relative to the seat tube, and then the front and back position of the seat cushion can be adjusted.

Preferably, the seat tube has a shaft hole and a pair of rectangular side holes that diagonally communicate with the shaft hole, the seat rod penetrates the shaft hole of the seat tube, and the positioning rod has a positioning section presented in a rectangular shape , A first threaded section connected to the positioning section and a second threaded section connected to the first threaded section, the positioning section penetrates the side hole of the seat tube and has the recess, the first and second threaded sections They are all located outside the side hole of the seat tube. In addition, the knob has a knob head, a first nut, and a second nut. The first nut is clamped on the knob head and screwed on the first thread section of the positioning rod, so that the first screw The cap can be driven by the knob head to drive the positioning rod to move diagonally relative to the seat rod. The second nut is screwed on the second threaded section of the positioning rod and abuts against the first nut to prevent the The first nut comes out.

Preferably, the positioning assembly further has a limiting tube and an elastic member, the limiting tube is fixed to the outer peripheral surface of the seat tube and has a receiving wall and a through hole penetrating the receiving wall, and the hole is positioned by the The first threaded section of the rod is penetrated, and the elastic member is sleeved on the first threaded section of the positioning rod and abuts between the positioning section of the positioning rod and the receiving wall of the limit tube. Thereby, when the positioning rod is at the positioning position, a predetermined distance is maintained between the first nut and the receiving wall of the limit tube. At this time, the elastic member is compressed, and when the positioning rod is at the release position , The elastic restoring force provided by the elastic member pushes the positioning section of the positioning rod, so that the first nut abuts against the receiving wall of the limit tube under the transmission of the positioning rod, thereby producing a positioning effect .

Preferably, the end of the positioning section of the positioning rod has a screw hole, the bushing has an end hole, and the positioning component further has a screw that penetrates the end hole and is screwed in the screw hole for fixing The bushing is combined with the positioning section of the positioning rod.

Preferably, a bushing is sleeved on the outer peripheral surface of the positioning section of the positioning rod, and the bushing is mainly used to avoid surface wear of the positioning rod during operation. In addition, the bush has a hollow groove corresponding to the concave portion of the positioning rod, so that the concave portion of the positioning rod can be exposed to cooperate with the seat rod.

Preferably, the seat post is provided with a liner facing one side of the positioning rod, and the liner is used to receive the concave portion of the positioning rod to avoid surface abrasion caused by repeated tightening of the two.

Preferably, two opposing pads are provided between the inner circumferential surface of the seat tube and the outer circumferential surface of the seat post, which are mainly used to increase the smoothness of operation and reduce the generation of abnormal noise.

The detailed structure, characteristics, assembly or use of the seat adjustment mechanism provided by the present invention will be described in the detailed description of the subsequent implementation. However, those with ordinary knowledge in the field of the present invention should be able to understand that these detailed descriptions and specific examples for implementing the present invention are only used to illustrate the present invention, and are not intended to limit the scope of the patent application of the present invention.

The applicant first explains here that in the entire specification, including the following embodiments and the claims for the scope of patent application, "front", "rear", "top", "bottom", "inner", "outer" "" and other terms related to directionality are based on the direction in the schema. Secondly, in the following embodiments and drawings, the same element numbers represent the same or similar elements or structural features.

Please refer to FIGS. 1 and 2 first. The seat adjustment mechanism 10 of the present invention includes a seat tube 20, a seat rod 30, and a positioning assembly 40.

The bottom surface of the seat tube 20 is connected with a bracket 12, and the seat tube 20 has a shaft hole 22 penetrating the front and rear ends and a pair of rectangular side holes 24 (as shown in FIG. 2) that connect the shaft holes 22 obliquely.

The seat post 30 is displaceably disposed through the shaft hole 22 of the seat tube 20 and is connected to the seat cushion 14 at the front end thereof. In order to increase the smoothness of operation and reduce the generation of abnormal noise, the left and right sides of the seatpost 30 can be provided with a pad 32 (as shown in Figures 2 and 3) respectively according to actual needs, by means of the two pads 32 and The hole wall of the shaft hole 22 of the seat tube makes contact.

The positioning assembly 40 has a limiting tube 50, a positioning rod 60, a knob 70, and an elastic member 82, wherein:

One end of the limiting tube 50 is fixed to the outer peripheral surface of the seat tube 20, and the other end of the limiting tube 50 has a receiving wall 51 and a through-hole 52 penetrating the receiving wall 51, and the through-hole 52 coaxially corresponds to the rectangle of the seat tube 20 Side hole 24 (as shown in Figure 2).

The positioning rod 60 has a positioning section 61, a first threaded section 62, and a second threaded section 63. The positioning section 61 is presented in a rectangular shape. The first threaded section 62 is integrally connected with the positioning section 61. The two threaded sections 63 are integrally connected to the first threaded section 62, and the outer diameter of the positioning section 61 is larger than the outer diameter of the first threaded section 62, and the outer diameter of the first threaded section 62 is larger than the outer diameter of the second threaded section 63. As shown in Figures 2 and 3, the positioning rod 60 is respectively penetrated by the positioning section 61 and the first threaded section 62 through the rectangular side hole 24 of the seat tube 20 and the perforation 52 of the limit tube 50, so that the positioning rod 60 can face each other. The seat tube 20 and the seat post 30 are displaced obliquely. In addition, the bottom surface of the positioning section 61 of the positioning rod 60 has a recess 64 facing the seat rod 30.

In order to avoid surface wear caused by mutual friction between the positioning rod 60 and the seat tube 20 during the actuation process, the positioning section 61 of the positioning rod 60 can be sleeved with a bushing 66 according to actual needs, as shown in Figures 2 and 3. The bushing 66 is locked together with the positioning section 61 of the positioning rod 60 by a screw 69. More specifically, the left end of the positioning section 61 of the positioning rod 60 has a screw hole 65, and the left end of the bushing 66 has an end hole. 67. The screw 69 passes through the end hole 67 and is screwed into the screw hole 65 to ensure that the two are fixed together. In addition, the bottom surface of the bushing 66 has a hollow groove 68, as shown in Figures 2 and 3, the bushing The hollow groove 68 of 66 corresponds to the recess 64 of the positioning rod 60, so that the recess 64 of the positioning rod 60 can be exposed to fit the seat post 30.

The knob 70 has a knob head 71, a first nut 74, a second nut 79, and an end plug 81, wherein:

The knob head 71 has a polygonal hole 72 (here, a hexagonal hole is taken as an example) and an end plug hole 73 axially communicating with the polygonal hole 72.

The first nut 74 is screwed on the first threaded section 62 of the positioning rod 60 and has a polygonal engaging portion 75 (here, a hexagon). The first nut 74 is clamped to the knob head by the polygonal engaging portion 75 The polygonal hole 72 of 71 is fixed with the knob head 71 through a buckle ring 78, so that the first nut 74 can be driven by the knob head 71 to rotate synchronously. In addition, as shown in Figures 2 and 3, the first nut 74 integrally extends from the inner end surface of the polygonal engaging portion 75 with a convex portion 76 that protrudes from the knob head 71, and is also outside the polygonal engaging portion 75 An accommodating groove 77 is formed on the end surface.

The second nut 79 is screwed on the second threaded section 63 of the positioning rod 60 and is located in the receiving groove 77 of the first nut 74, and indirectly abuts against the wall of the receiving groove 77 through a gasket 80, It is mainly used to provide a stopping effect for the first nut 74 to prevent the first nut 74 from falling out of the positioning rod 60.

The end plug 81 is arranged in the end plug hole 73 of the knob head 71 to prevent providing dustproof and waterproof effects.

The elastic member 82 is sleeved on the first threaded section 62 of the positioning rod 60 and abuts between the positioning section 61 of the positioning rod 60 and the receiving wall 51 of the limit tube 50 to provide elastic force to push the positioning rod 60 to the left.

When the position of the seat cushion 14 is to be fixed, first apply force to rotate the knob head 71 so that the knob head 71 synchronously drives the first nut 74 to rotate. At this time, due to the positioning section 61 of the positioning rod 60 and the rectangular side hole 24 of the seat tube 20 There is a non-circular cross-sectional fit, so the positioning rod 60 will be driven by the first nut 74 to move linearly to the lower right during the rotation of the first nut 74, and then the positioning rod 60 to the lower right During the movement, on the one hand, the positioning section 61 will squeeze the elastic piece 82 to accumulate the restoring force of the elastic piece 82, and on the other hand, it will drive the knob 70 to move away from the limit tube 50, so that the first nut 74 A predetermined distance is generated between the convex portion 76 and the receiving wall 51 of the limit tube 50, until the positioning rod 60 is pressed against the top surface of the seat post 30 by the concave portion 64 so that the positioning rod 60 is located at a positioning position P1 (such as the third As shown in the figure), the seat post 30 cannot move relative to the seat tube 20, and the position of the seat cushion 14 is now fixed. In order to avoid surface wear between the recess 64 of the positioning rod 60 and the top surface of the seat post 30 due to mutual friction, the top surface of the seat post 30 can also be provided with a gasket 34 according to actual needs. The recess 64 of the positioning rod 60 is received.

When you want to readjust the front and rear positions of the seat cushion 14, just turn the knob head 71 in reverse to release the bite force of the first nut 74 on the first threaded section 62 of the positioning rod 60. At this time, the elastic member 82 generates The elastic restoring force will push the positioning rod 60 to the upper left. When the positioning rod 60 moves to the upper left, on the one hand, the recess 64 will release the pressing force applied to the seatpost 30, and on the other hand, it will drive the knob 70 toward The direction of the limit tube 50 moves until the convex portion 76 of the first nut 74 abuts against the receiving wall 51 of the limit tube 50 so that the positioning rod 60 is located at a release position P2, and then the seat cushion 14 can be adjusted. After adjusting the front and rear positions, fix the seat cushion 14 according to the steps described in the previous paragraph.

In summary, the seat adjustment mechanism 10 of the present invention uses the knob 70 to control the oblique displacement of the positioning rod 60, so that the positioning rod 60 fixes or loosens the seat rod 30, and then quickly adjusts the front and rear positions of the seat cushion 14 Effect.

10: Seat adjustment mechanism 12: Bracket 14: seat cushion 20: seat tube 22: Shaft hole 24: rectangular side hole 30: seatpost 32, 34: liner 40: positioning components 50: limit tube 51: Acceptance Wall 52: Piercing 60: positioning rod 61: Positioning segment 62: The first thread segment 63: second thread segment 64: recess 65: screw hole 66: Bush 67: End hole 68: hollow slot 69: Screw 70: knob 71: knob head 72: Polygonal hole 73: End plug hole 74: The first nut 75: Polygonal engagement part 76: convex 77: holding tank 78: Buckle 79: second nut 80: Gasket 81: end plug 82: Elastic P1: Positioning position P2: Release position

Figure 1 is a perspective view of the appearance of the present invention. Figure 2 is an exploded perspective view of the present invention. Figure 3 is a sectional view of the combination of the present invention, which mainly shows that the positioning rod is in the positioning position. Figure 4 is similar to Figure 3, mainly showing that the positioning rod is in the release position.

12: Bracket

14: seat cushion

20: seat tube

22: Shaft hole

24: rectangular side hole

30: seatpost

32, 34: liner

40: positioning components

50: limit tube

51: Acceptance Wall

52: Piercing

60: positioning rod

61: Positioning segment

62: The first thread segment

63: second thread segment

64: recess

66: Bush

68: hollow slot

69: Screw

70: knob

71: knob head

72: Polygonal hole

73: End plug hole

74: The first nut

75: Polygonal engagement part

76: convex

78: Buckle

79: second nut

80: Gasket

81: end plug

82: Elastic

Claims (8)

A seat adjustment mechanism, including: A tube A pole, which can be moved forward and backward through the seat tube; and A positioning assembly has a positioning rod and a knob. The positioning rod is obliquely displaceable through the seat tube and has a recess facing the seat rod. The knob is screwed to one end of the positioning rod for driving The positioning rod moves relative to the seatpost between a positioning position and a release position. When the positioning rod is located at the positioning position, the concave portion of the positioning rod presses the seatpost so that the seatpost cannot be forward and backward relative to the seat tube When the positioning rod is in the release position, the recess of the positioning rod releases the seat rod, so that the seat rod can move back and forth relative to the seat tube. The seat adjustment mechanism according to claim 1, wherein the seat tube has a shaft hole and a pair of rectangular side holes that diagonally communicate with the shaft hole, the seat rod penetrates the shaft hole of the seat tube, and the positioning rod has A rectangular positioning section, a first threaded section connecting the positioning section, and a second threaded section connecting the first threaded section, the positioning section penetrates the side hole of the seat tube and has the recess, the The knob has a knob head, a first nut and a second nut. The first nut is clamped on the knob head and is screwed on the first threaded section of the positioning rod. The second nut is screwed on The second threaded section of the positioning rod abuts against the first nut. The seat adjustment mechanism according to claim 2, wherein the first nut has a polygonal engaging portion, the knob has a polygonal hole, and the knob is clamped to the polygon of the first nut by the polygonal hole The card joint. The seat adjustment mechanism according to claim 2 or 3, wherein the positioning assembly further has a limit tube and an elastic member, the limit tube is fixed to the outer circumference of the seat tube and has a receiving wall and a through The perforation of the bearing wall is penetrated by the first threaded section of the positioning rod, and the elastic member is sleeved on the first threaded section of the positioning rod and abuts against the positioning section of the positioning rod and the limit tube When the positioning rod is at the positioning position, a predetermined distance is maintained between the first nut and the receiving wall of the limit tube. When the positioning rod is at the release position, the first screw The cap abuts against the receiving wall of the limit tube. The seat adjustment mechanism according to claim 2, wherein the positioning component further has a bushing, the bushing is provided in the positioning section of the positioning rod, and the bushing has a hollow groove corresponding to the positioning rod The recess. The seat adjustment mechanism according to claim 5, wherein the end of the positioning section of the positioning rod has a screw hole, the bushing has an end hole, and the positioning assembly further has a screw through which the end hole and the screw are inserted. Set in the screw hole. The seat adjustment mechanism according to claim 1, wherein the seat post is provided with a pad facing one side of the positioning rod, and when the positioning rod is at the positioning position, the recess of the positioning rod abuts against the pad. The seat adjustment mechanism according to claim 1, wherein two opposite cushions are provided between the seat tube and the seat post.

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