阅读说明：本技术 一种扩胎与夹胎两用工具 (Dual-purpose tool for expanding tire and clamping tire ) 是由 王娣 刘艮春 王恒宜 于 2019-11-26 设计创作，主要内容包括：本发明公开了一种扩胎与夹胎两用工具,包括：导向组件,包括齿条以及固定于所述齿条一端底部的第一固定部；行走组件,包括滑动盒、固定于所述滑动盒底部的第二固定部以及旋转连接在所述滑动盒上部的齿轮；所述齿条穿过所述滑动盒,并与所述齿轮啮合；驱动组件,其一端为旋转连接在所述滑动盒上的连接头,另一端外伸形成拨动杆；所述连接头通过单向驱动组件与所述齿轮传动连接,所述单向驱动组件包括能够改变朝向并抵在所述齿轮齿槽内的推动块；以及,装备组件,包括可拆卸安装于所述第一固定部与第二固定部上的扩胎零件组或夹胎零件组。本发明能够根据用户的需求进行选择性调节和组装,其既能够当作扩胎器使用,也能够当作夹胎器使用。(The invention discloses a dual-purpose tool for expanding and clamping tires, which comprises: the guide assembly comprises a rack and a first fixing part fixed at the bottom of one end of the rack; the walking assembly comprises a sliding box, a second fixing part fixed at the bottom of the sliding box and a gear rotatably connected to the upper part of the sliding box; the rack penetrates through the sliding box and is meshed with the gear; one end of the driving component is a connector which is rotationally connected to the sliding box, and the other end of the driving component extends outwards to form a poke rod; the connector is in transmission connection with the gear through a one-way driving assembly, and the one-way driving assembly comprises a pushing block which can change the direction and is abutted to the gear tooth groove; and the equipment assembly comprises a tire expanding part set or a tire clamping part set which is detachably arranged on the first fixing part and the second fixing part. The invention can be selectively adjusted and assembled according to the requirements of users, and can be used as a tire expander and a tire clamper.)

1. The utility model provides a expand child and press from both sides dual-purpose instrument of child which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the guide assembly (100) comprises a rack (101) and a first fixing part (102) fixed at the bottom of one end of the rack (101);

the walking assembly (200) comprises a sliding box (201), a second fixing part (202) fixed at the bottom of the sliding box (201), and a gear (203) rotatably connected to the upper part of the sliding box (201); the rack (101) penetrates through the sliding box (201) and is meshed with the gear (203);

the driving assembly (300), one end of which is a connector (301) rotationally connected to the sliding box (201), and the other end of which extends outwards to form a poke rod (302); the connecting head (301) is in transmission connection with the gear (203) through a one-way driving assembly (400), and the one-way driving assembly (400) comprises a pushing block (401) which can change the direction and is abutted into a tooth slot of the gear (203); and the number of the first and second groups,

the equipment assembly (500) comprises a tire expanding part group (501) or a tire clamping part group (502) which is detachably arranged on the first fixing part (102) and the second fixing part (202).

2. The dual-purpose tool for expanding and clamping the tire as claimed in claim 1, wherein: the tire enlarging component group (501) comprises a first tire enlarging leg (501a) which can be detachably mounted on the first fixing part (102) and a second tire enlarging leg (501b) which can be detachably mounted on the second fixing part (202);

the tire clamping part group (502) comprises a first tire clamping leg (502a) capable of being detachably mounted on the first fixing part (102) and a second tire clamping leg (502b) capable of being detachably mounted on the second fixing part (202).

3. The dual-purpose tool for expanding and clamping the tire as claimed in claim 1 or 2, wherein: the first fixing part (102) and the second fixing part (202) are both provided with screw holes (K);

one end of each of the tire expanding part group (501) and the tire clamping part group (502) is provided with a socket (C-1) matched with the first fixing part (102) or the second fixing part (202), a through hole (C-2) corresponding to the screw hole (K) is formed in the side face of the tire expanding part group, and the through hole (C-2) is opposite to the screw hole (K) and is detachably connected with the screw hole (K) through a bolt (L).

4. The dual-purpose tool for expanding and clamping the tire as claimed in claim 3, wherein: the interior of the connecting head (301) is provided with an accommodating space (301a) capable of accommodating the one-way driving assembly (400), and the bottom of the connecting head (301) is provided with a first window (301b) matched with the movement stroke of the pushing block (401).

5. The dual-purpose tool for expanding and clamping the tire as claimed in claim 4, wherein: the unidirectional drive assembly (400) further comprises a housing shell (402) and a positioning member (403);

the pushing block (401) comprises a squeezing head (401a) at the bottom end, sliding shafts (401b) fixed on two sides, and a channel (401c) penetrating through the sliding shafts (401b) and matched with the outer diameter of the positioning piece (403);

the bottom of the accommodating shell (402) is provided with a second window (402a) corresponding to the first window (301b), two sides of the accommodating shell are provided with sliding grooves (402b) corresponding to the sliding shafts (401b), and the sliding shafts (401b) penetrate into the sliding grooves (402b) and can slide along the longitudinal direction of the sliding shafts;

the both sides of connector (301) are provided with respectively corresponding to first locating hole (301c) and second locating hole (301d) at spout (402b) both ends, setting element (403) can pass passageway (401c) to be fixed in first locating hole (301c) or second locating hole (301 d).

6. The dual-purpose tool for expanding and clamping the tire as claimed in claim 5, wherein: the one-way driving assembly (400) further comprises a first stretching member (404) which is fixed at one end to the top end of the pushing block (401) and at the other end to the top of the accommodating shell (402).

7. The dual-purpose tool for expanding and clamping the tire as claimed in claim 5 or 6, wherein: the inner side wall of the channel (401c) is provided with internal threads, and the positioning piece (403) comprises a screw rod corresponding to the channel (401c), and the screw rod can penetrate through the channel (401c) through threaded fit.

8. The dual-purpose tool for expanding and clamping the tire as claimed in claim 7, wherein: the accommodating shell (402) can slide up and down in the accommodating space (301 a);

the top of the accommodating shell (402) is provided with a guide post (402c), the top surface of the accommodating space (301a) is provided with a guide hole (301a-1) which is matched with the guide post (402c) in an inwards concave manner, and the guide post (402c) is inserted into the guide hole (301a-1) and can slide relatively.

9. The dual-purpose tool for expanding and clamping the tire as claimed in any one of claims 5, 6 or 8, wherein: the one-way driving assembly (400) further comprises a second stretching piece (405), one end of which is fixed on the top surface of the accommodating space (301a), and the other end of which is fixed on the top of the accommodating shell (402).

10. The dual-purpose tool for expanding and clamping tires as claimed in any one of claims 1, 2, 4-6 or 8, wherein: the bottom of connector (301) has articulated seat (301e), the both sides of gear (203) are provided with pivot (203a), the upper portion of slip box (201) has pivot installation position (201a), pivot (203a) of gear (203) both sides pass respectively and correspond pivot installation position (201a), and with articulated seat (301e) swivelling joint.

Technical Field

The invention relates to the technical field of tire processing, in particular to a dual-purpose tool for tire expanding and clamping.

Background

The tyre expander and the tyre clamp of the automobile tyre are two kinds of commonly used tyre maintenance tools. The tire expander is a mechanical tool for expanding the distance between the tire beads on the two sides of the tire, can locally expand the inner cavity of the tire, is convenient for repairing the tire, determines the damage degree and the part of the tire, and is also convenient for filing and repairing the injured part of the inner cavity. The tire clamping device is a mechanical tool for clamping and flattening a certain section of a tire and detaching the tire from a hub, and has the tire removing function. In the prior art, a maintenance workshop usually needs to be equipped with a special tire expander and a special tire clamping device respectively aiming at the operation processes of tire expanding and tire clamping, the two tools have single functions, and the problems of inconvenience in carrying and space occupation can be caused when the two tools are carried simultaneously.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

The present invention has been made in view of the problems occurring in the prior art.

Therefore, one of the objectives of the present invention is to provide a dual-purpose tool for expanding and clamping a tire, which can solve the problems of single function, inconvenient carrying and space occupation of the tire expander and the tire clamping device in the prior art

In order to solve the technical problems, the invention provides the following technical scheme: a dual-purpose tool for tire expanding and clamping comprises: the guide assembly comprises a rack and a first fixing part fixed at the bottom of one end of the rack; the walking assembly comprises a sliding box, a second fixing part fixed at the bottom of the sliding box and a gear rotatably connected to the upper part of the sliding box; the rack penetrates through the sliding box and is meshed with the gear; one end of the driving component is a connector which is rotationally connected to the sliding box, and the other end of the driving component extends outwards to form a poke rod; the connector is in transmission connection with the gear through a one-way driving assembly, and the one-way driving assembly comprises a pushing block which can change the direction and is abutted to the gear tooth groove; and the equipment assembly comprises a tire expanding part set or a tire clamping part set which is detachably arranged on the first fixing part and the second fixing part.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the tire expanding part group comprises a first tire expanding leg which can be detachably mounted on the first fixing part and a second tire expanding leg which can be detachably mounted on the second fixing part; the tire clamping part group comprises a first tire clamping leg capable of being detachably mounted on the first fixing portion and a second tire clamping leg capable of being detachably mounted on the second fixing portion.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the first fixing part and the second fixing part are both provided with screw holes; one end of each of the tire expanding part group and the tire clamping part group is provided with a socket matched with the first fixing part or the second fixing part, a through hole corresponding to the screw hole is formed in the side face of each of the tire expanding part group and the tire clamping part group, the through hole is opposite to the screw hole, and the through holes are detachably connected through bolts.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the connector is internally provided with an accommodating space capable of accommodating the unidirectional driving assembly, and the bottom of the connector is provided with a first window matched with the movement stroke of the pushing block.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the unidirectional driving assembly further comprises an accommodating shell and a positioning piece; the pushing block comprises a squeezing head at the bottom end, sliding shafts fixed on two sides, and a channel penetrating through the sliding shafts and matched with the outer diameter of the positioning piece; the bottom of the accommodating shell is provided with a second window corresponding to the first window, the two sides of the accommodating shell are provided with sliding chutes corresponding to the sliding shafts, and the sliding shafts penetrate into the sliding chutes and can slide along the longitudinal direction of the sliding chutes; the two sides of the connector are respectively provided with a first positioning hole and a second positioning hole corresponding to the two ends of the sliding groove, and the positioning piece can penetrate through the channel and is fixed in the first positioning hole or the second positioning hole.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the one-way driving assembly further comprises a first stretching piece, one end of the first stretching piece is fixed to the top end of the pushing block, and the other end of the first stretching piece is fixed to the top of the accommodating shell.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the inside wall of passageway has the internal thread, the setting element is including corresponding to the screw rod of passageway, the screw rod can pass through the screw-thread fit the passageway.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the accommodating shell can slide up and down in the accommodating space; the top of the accommodating shell is provided with a guide post, the top surface of the accommodating space is inwards provided with a guide hole matched with the guide post, and the guide post is inserted into the guide hole and can slide relatively.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the one-way driving assembly further comprises a second stretching piece, one end of the second stretching piece is fixed to the top surface of the accommodating space, and the other end of the second stretching piece is fixed to the top of the accommodating shell.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the bottom of connector has articulated seat, the both sides of gear are provided with the pivot, the upper portion of slip box has pivot installation position, the pivot of gear both sides passes respectively and corresponds pivot installation position, and with articulated seat swivelling joint.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the temporary positioning assembly comprises a locking block, a bearing block and a spring piece, wherein part of the locking block penetrates out of the accommodating shell, the bearing block is fixed on the inner side wall of the accommodating shell and bears the bottom of the locking block, and the spring piece is fixed at the top of the accommodating shell and extrudes the inner side face of the locking block; the accommodating shell is provided with a penetrating window corresponding to the penetrating part of the locking block, the inner side wall of the accommodating space is provided with an allowable groove corresponding to the penetrating part of the locking block, the penetrating part of the locking block can extend into the allowable groove, and the top of the penetrating part can be attached to the top of the allowable groove.

As a preferable scheme of the dual-purpose tool for tire expanding and clamping, the dual-purpose tool for tire expanding and clamping comprises the following steps: the temporary positioning assembly further comprises a sliding block arranged in the allowable groove, a third stretching piece connected to the bottom of the sliding block and a traction cable of which the lower end is connected to the top of the sliding block, and the upper end of the traction cable extends into the poke rod and is connected with the linkage assembly; the linkage assembly comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the outer side wall of the poke rod, and the other end of the first connecting rod is a free end; one end of the second connecting rod is a sliding end, the sliding end extends into the poke rod and is connected with the upper end of the traction cable, and the other end of the second connecting rod extends out of the poke rod and is hinged with the middle section of the first connecting rod; the poke rod is internally provided with a guide sliding groove corresponding to the sliding end, one side of the guide sliding groove is provided with a movable space corresponding to the second connecting rod, and the movable space is communicated with the guide sliding groove.

The invention has the beneficial effects that: the tire expanding and clamping device can be selectively adjusted and assembled according to the requirements of users, and can be used as a tire expanding device and a tire clamping device, so that two special tools are not required to be equipped in a tire maintenance workshop, different functions can be realized through one tool, the cost is saved, the carrying is convenient, and the space is not occupied.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

FIG. 1 is a block diagram of the present invention assembled as a tire spreader.

FIG. 2 is a block diagram of the tire grabber of the present invention assembled.

Fig. 3 is a fitting structure diagram of the tire expanding and clamping dual-purpose tool and the equipment assembly thereof.

Fig. 4 is an internal structure view of the dual-purpose tool for expanding and clamping tires and a partial detailed view thereof.

Fig. 5 is a structural view of a driving assembly and a linkage assembly mounted thereon.

Fig. 6 is an exploded view of the unidirectional drive assembly and the temporary positioning assembly.

Fig. 7 is a structural view of the slide cassette.

FIG. 8 is a schematic view of the underside of the cantilevered outer end of the retainer block being flush with the top of the lock block.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Referring to fig. 1 to 8, according to an embodiment of the present invention, the embodiment provides a dual-purpose tool for tire expanding and tire clamping, which can be used as a tire expander and a tire clamping device through selective adjustment and assembly by a user, so that a tire maintenance workshop does not need to be equipped with two special tools, and different functions can be realized by one tool, thereby saving cost, facilitating carrying and occupying no space.

The tool for expanding and clamping the tire comprises a guide assembly 100 extending longitudinally, a walking assembly 200 sleeved on the guide assembly 100 and capable of moving longitudinally, a driving assembly 300 and a one-way driving assembly 400 capable of driving the walking assembly 200 to move, and equipment assemblies 500 which are arranged on the guide assembly 100 and the walking assembly 200 and capable of increasing/decreasing the distance between the two assemblies, wherein when the tool is used as a tire expander or a tire clamp and the like in different scenes, different equipment assemblies 500 are required to be arranged.

The guide assembly 100 includes a rack 101 and a first fixing portion 102 fixed to a bottom portion of one end of the rack 101. The first fixing portion 102 may be a prism structure (preferably, a quadrangular prism) perpendicularly fixed to the rack 101. The guide member 100 has a handle 103 at one end corresponding to the first fixing portion 102 for easy carrying of the tool, and the other end of the guide member 100 is a release end 104 from which the running member 200 can be removed.

The traveling assembly 200 includes a sliding box 201 sleeved on the rack 101, a second fixing portion 202 fixed to the bottom of the sliding box 201, and a gear 203 rotatably connected to the upper portion of the sliding box 201. The sliding box 201 is provided with a sliding channel H which is longitudinally through, the bottom of the gear 203 extends to the upper part of the sliding channel H of the sliding box 201, and the rack 101 passes through the sliding channel H of the sliding box 201 and is meshed with the gear 203 on the upper part for transmission. The second fixing portion 202 may have a prismatic structure (preferably, a quadrangular prism) perpendicularly fixed to the bottom surface of the slide case 201, and preferably has the same cross section as the first fixing portion 102.

The driving assembly 300 is generally rod-shaped, and has one end connected to the connecting head 301 rotatably connected to the sliding box 201 and the other end extending outward to form a poke rod 302. The connector 301 is in transmission connection with the gear 203 through a one-way driving assembly 400, and the one-way driving assembly 400 comprises a pushing block 401 capable of changing the direction and abutting against the tooth grooves of the gear 203; when the user rotates the dial lever 302, the gear 203 can be pushed to rotate on the sliding box 201 by the pushing block 401 rotating synchronously, and at the same time, the rotating gear 203 can drive the traveling assembly 200 to move on the rack 101 integrally through the meshing between the gear 203 and the rack 101. Since the orientation of the joint head 301 is variable, the unidirectional driving direction of the gear 203 by the joint head 301 can be selected and changed by changing the orientation of the joint head 301.

The kit-of-parts assembly 500 includes a tire-expanding component set 501 or a tire-clamping component set 502 detachably mounted on the first fixing portion 102 and the second fixing portion 202. When the present invention is used as a tire spreader, the tire spreading part group 501 may be mounted on the first fixing portion 102 and the second fixing portion 202. Specifically, the tire enlarging component set 501 includes a first tire enlarging leg 501a detachably mountable on the first fixing portion 102 and a second tire enlarging leg 501b detachably mountable on the second fixing portion 202. The first tire expanding leg 501a and the second tire expanding leg 501b have the same structure and are both quadrangular, and preferably have a shape like a Chinese character 'ba'.

When the present invention is used as a tire clamper, the tire clamping component group 502 may be mounted on the first fixing portion 102 and the second fixing portion 202. Specifically, the tire clamping component group 502 includes a first tire clamping leg 502a detachably mountable on the first fixing portion 102 and a second tire clamping leg 502b detachably mountable on the second fixing portion 202. The first clamping leg 502a and the second clamping leg 502b have the same structure and are both quadrangular prism structures, and are parallel to each other when the first clamping leg and the second clamping leg are installed. The end structures of the first tire gripping leg 502a and the second tire gripping leg 502b may be the same as those of the existing tire grippers.

In summary, the invention can realize the function switching of the tire expander or the tire clamping device by changing the orientation of the pushing block 401 and installing different types of equipment assembly 500 parts, and has the advantages of multiple functions, convenient use and no space occupation.

Further, the first fixing portion 102 and the second fixing portion 202 are both provided with screw holes K, and at least one set is provided. One end of each of the tire expanding part set 501 and the tire clamping part set 502 has a socket C-1 matched with the lower end of the first fixing part 102 or the second fixing part 202, and the side surface is also provided with a through hole C-2 corresponding to the screw hole K. Specifically, one end of each of the first expanded leg 501a, the second expanded leg 501b, the first clamping leg 502a and the second clamping leg 502b has a socket C-1 with the same specification, and the lower end of the first fixing portion 102 or the second fixing portion 202 can be just inserted into the socket C-1. When the first fixing part 102 or the second fixing part 202 is inserted into the socket C-1, the screw hole K can be opposite to the through hole C-2 and can be detachably connected through the bolt L.

Further, the interior of the connection head 301 has a receiving space 301a capable of receiving the unidirectional driving assembly 400, and the bottom of the connection head 301 has a first window 301b matched with the movement stroke of the pushing block 401. The driving assembly 400 is disposed in the accommodating space 301a, and the pushing block 401 can extend out from the first window 301b at the bottom of the connector 301 and is in transmission connection with the gear 203 of the traveling assembly 200.

Further, the unidirectional driving assembly 400 further includes a housing 402 and a positioning member 403. The pushing block 401 comprises a pressing head 401a at the bottom end, sliding shafts 401b fixed at both sides, and a channel 401c penetrating the sliding shafts 401b and fitting the outer diameter of the positioning member 403, wherein the pressing head 401a can abut against the tooth grooves of the gear 203.

The accommodating case 402 is disposed in the accommodating space 301a, and has a second window 402a corresponding to the first window 301b at the bottom thereof, and sliding grooves 402b corresponding to the sliding shafts 401b at both sides thereof, and the sliding shafts 401b penetrate the sliding grooves 402b and can slide along the longitudinal direction thereof. Therefore, the pressing head 401a of the pushing block 401 can sequentially protrude out of the second window 402a and the first window 301b and is in transmission connection with the gear 203 of the walking assembly 200. Further, the push block 401 as a whole can also slide in the longitudinal direction of the slide groove 402 b.

The two sides of the connector 301 are further respectively provided with a first positioning hole 301c and a second positioning hole 301d corresponding to two end positions of the sliding slot 402b, and the positioning member 403 can pass through the channel 401c on the pushing block 401 and be selectively fixed in the first positioning hole 301c or the second positioning hole 301d, so that the pushing block 401 cannot slide along the sliding slot 402b and has different orientations.

Further, the one-way driving assembly 400 further includes a first tension member 404 having one end fixed to the top end of the push block 401 and the other end fixed to the top of the receiving case 402, thus having a tendency to pull the top end of the push block 401 and return the push block 401 to the vertical state. The first tensile member 404 may employ an elastic cord or an extension spring.

Based on the above, when the connection head 301 is fixed at the first positioning hole 301c, the tip of the pressing head 401a has a component toward the release end 104 of the guide assembly 100, and therefore, the tool at this time corresponds to the function of the spreader. If the poke rod 302 is reciprocally rotated back and forth, the squeezing head 401a can play a role of a pawl under the flexible tension of the first stretching piece 404, that is, the gear 203 can be driven to rotate in a single direction, and the whole walking assembly 200 can move towards the direction of the disengaging end 104 through the meshing of the gear 203 and the rack 101, so that the distance between the first fixing portion 102 and the second fixing portion 202 is increased, and the function of expanding the tire is achieved.

When the connection head 301 is fixed at the second positioning hole 301d, the tip of the pressing head 401a has a component toward the handle 103 of the guide assembly 100, and therefore, the tool at this time corresponds to the function of a tire gripper. If the poke rod 302 is reciprocally rotated back and forth, the squeezing head 401a can perform a click action opposite to the above action effect under the flexible tension of the first stretching piece 404, that is, the driving gear 203 can perform unidirectional (reverse) rotation, and the whole traveling assembly 200 can move towards the handle 103 by the engagement of the gear 203 and the rack 101, so that the distance between the first fixing portion 102 and the second fixing portion 202 is shortened, and the tire clamping effect is achieved.

Further, the inner side wall of the channel 401c is provided with internal threads, and the positioning member 403 comprises a screw rod corresponding to the channel 401c, and the screw rod can penetrate through the channel 401c through thread fit to realize detachable connection.

Further, the accommodating case 402 can slide up and down within the accommodating space 301a to a certain extent. The top of the receiving case 402 is provided with a guide post 402c, and the top surface of the receiving space 301a is recessed with a guide hole 301a-1 matching with the guide post 402c, and the guide post 402c is inserted into the guide hole 301a-1 and can slide relatively. In the invention, when the fixing position of the pushing block 401 needs to jump from the first positioning hole 301c to the second positioning hole 301d (or jump from the second positioning hole 301d to the first positioning hole 301c), the positioning piece 403 for positioning can be pulled out by rotation, and then the pushing block 401 is shifted to slide along the longitudinal direction of the sliding groove 402b until the pushing block moves to the position to be positioned, and in the process, the up-and-down sliding characteristic of the accommodating shell 402 can ensure that the pushing block 401 is not hindered by the stroke of the lower gear 203 in the process of sliding displacement along the sliding groove 402 b.

Further, the unidirectional driving assembly 400 further includes a second tension member 405 having one end fixed to the top surface of the accommodating space 301a and the other end fixed to the top of the accommodating case 402. The second tension member 405 may be an extension spring, which is sleeved on the outer periphery of the guide post 402 c. In the present invention, the second tensile member 405 is disposed such that: when the positioning member 403 is pulled out in a rotating manner, the whole unidirectional driving assembly 400 without upper and lower constraint can move upwards and close under the stretching action of the second stretching member 405, so that the extrusion head 401a at the lower end of the pushing block 401 is separated from the gear 203, and the pushing block 401 is not hindered by the stroke of the gear 203 at the lower part thereof in the process of sliding and shifting along the sliding groove 402 b.

Further, the bottom of the connecting head 301 has an integrally formed hinge seat 301e, two sides of the gear 203 are provided with integrally formed rotating shafts 203a, and the upper portion of the sliding box 201 has a corresponding rotating shaft mounting position 201 a. The rotating shafts 203a on the two sides of the gear 203 respectively pass through the corresponding rotating shaft mounting positions 201a and are rotatably connected with the hinge seats 301e at the bottom of the connector 301.

Furthermore, the dual-purpose tool for tire expanding and clamping further comprises a temporary positioning assembly 600, which can assist the positioning of the positioning member 403 on the pushing block 401, and can also facilitate the insertion and assembly of the positioning member 403 when the positioning member 403 is positioned and fixed.

The temporary positioning member 600 includes a locking block 601 capable of partially penetrating the accommodating case 402, a holding block 602 fixed to the inner side wall of the accommodating case 402 and holding the bottom of the locking block 601, and a resilient piece 603 fixed to the top of the accommodating case 402 and pressing the inner side surface of the locking block 601. Specifically, the housing case 402 is provided with a through window 402d corresponding to a through portion of the lock block 601, and the lock block 601 includes a stopper portion 601a having an outer peripheral dimension larger than the through window 402d and retained in the housing case 402 and a lock portion 601b (through portion) capable of protruding out of the through window 402 d. The stopper 601a has a plate shape; the locking portion 601b is block-shaped, and its outer end is preferably of angular structure. The spring 603 is preferably a metal spring.

An allowable groove 301f corresponding to the protruding portion (locking portion 601b) of the locking block 601 is formed in the inner side wall of the accommodating space 301a, the protruding portion of the locking block 601 can extend into the allowable groove 301f, and the top of the protruding portion can be attached to the top of the allowable groove 301f to achieve limiting. Therefore, even if the positioning member 403 is not constrained, the top of the allowable groove 301f can limit the locking portion 601b, so that the entire unidirectional driving assembly 400 cannot be pulled by the second pulling member 405 to move upwards, and therefore, the rotational installation and assembly of the positioning member 403 can be facilitated.

When the locking block 601 needs to be unlocked so as not to obstruct the upward movement of the unidirectional driving assembly 400, the following technical scheme can be adopted:

the temporary positioning assembly 600 further comprises a sliding block 604 disposed in the allowance slot 301f, a third stretching member 605 connected to the bottom of the sliding block 604, and a pulling cable 606 connected to the top of the sliding block 604 at the lower end thereof, wherein the pulling cable 606 extends into the interior of the tap lever 302 at the upper end thereof and is connected to the linkage assembly 700, and the interior of the tap lever 302 has a routing channel T matched with the pulling cable 606. Specifically, the third stretching member 605 may be an elastic rubber string or a stretching spring, and one end thereof is fixed to the bottom of the allowance groove 301f and the other end thereof is fixed to the bottom of the slider 604. The slider 604 can slide up and down in the allowance groove 301f, and is normally located at the bottom of the lock portion 601 b. The traction cable 606 is an inelastic steel wire rope. Therefore, when the upper end of the traction cable 606 is pulled upwards by the linkage assembly 700, the slider 604 can slide upwards and press the locking portion 601b, and the locking block 601 is completely pressed into the accommodating shell 402, so as to unlock the locking block 601, and at this time, the elastic sheet 603 is in a tensioned state, and the whole unidirectional driving assembly 400 can move upwards. When the sliding block 604 is reset, the locking block 601 partially penetrates out of the accommodating shell 402 again under the pressure of the elastic sheet 603, and locking is achieved.

In the present invention, the linkage assembly 700 provides tension control to the upper end of the pull cable 606. Specifically, the linkage assembly 700 includes a first connecting rod 701 and a second connecting rod 702, one end of the first connecting rod 701 is hinged to the outer side wall of the poke rod 302, and the other end is a free end; one end of the second connecting rod 702 is a sliding end 702a, the sliding end 702a extends into the interior of the poke rod 302 and is fixedly connected with the upper end of the traction cable 606, and the other end of the second connecting rod 702 extends out of the poke rod 302 and is hinged with the middle section of the first connecting rod 701. In addition, the interior of the tap lever 302 has a guide chute 302a corresponding to the sliding end 702a, one side of the guide chute 302a is provided with a movable space 302b corresponding to the second link 702, and the movable space 302b is communicated with the guide chute 302 a. Therefore, by pressing the free end of the first link 701 inward, the second link 702 can be driven to perform a spatial movement, and the sliding end 702a slides upward in the guide chute 302a, thereby stretching the upper end of the traction cable 606.

The invention needs to be noted that: in order to prevent the locking block 601 from obstructing the upward routing of the traction cable 606, the limiting portion 601a of the locking block 601 has a first avoiding groove 601a-1 with an outward opening, and the traction cable 606 can pass through the first avoiding groove 601 a-1. To avoid the possibility of the supporting block 602 interfering with the structure of the first stretching member 404 when changing the orientation of the distal end of the extrusion head 401a, a second avoiding groove 602a may be provided on the supporting block 602.

Preferably, as shown in fig. 8, in the present invention, the bottom surface of the overhanging outer end of the supporting block 602 is just flush with the top highest position of the locking block 601, and the top highest position of the locking block 601 is just under the supporting block 602, so that it can be ensured that the locking block 601 cannot rotate outwards when located in the first positioning hole 301c or the second positioning hole 301d (the supporting block 602 interferes with the upper end thereof). Therefore, the process of sliding the locking block 601 to switch the position is not influenced, the pushing process of the locking block 601 to the gear 203 is more stable, and the situation of structural instability is effectively prevented.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.