Hair sticking device

Abstract

The utility model provides a hair sticking device, and belongs to the technical field of machinery. The problem that according to an existing hair collecting device, a hair collecting roller is inconvenient to replace is solved. The hair collecting device comprises a support body, a left connecting arm, a right connecting arm and a hair collecting roller, a synchronous gear is rotationally connected into the support body through a main shaft, rack parts meshed with the synchronous gear are arranged on a left guide rod part and a right guide rod part, and the left connecting arm and the right connecting arm synchronously move in different directions; the hair sticking device further comprises a movable locking structure used for enabling the left guide rod part and / or the right guide rod part to be in a movable locking state relative to the support body. The left rotating connecting part and the right rotating connecting part can synchronously move in different directions by moving the left connecting arm or the right connecting arm, so that the distance between the left rotating connecting part and the right rotating connecting part is increased or reduced; in the shrinking process, the distance between the left rotating connecting part and the right rotating connecting part is automatically matched with the length of the hair collecting roller, and the hair collecting roller can be matched with more hair collecting rollers with different lengths.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of household articles, and relates to a lint roller, in particular to a lint roller. BACKGROUND

[0002] The lint roller is a cleaning device that uses a lint roller to adhere to fine dust and hair. There are many related documents about the lint roller, such as Chinese patent documents with the names of lint roller, application number: 201030521986.X, a kind of lint roller, application number: 201320696861.9, a kind of quick release type lint roller, application number: 202322635126.3. The lint roller usually includes a support and a lint roller rotatably connected to the support through a shaft.

[0003] During use, the lint roller needs to be replaced frequently and is a consumable item. Consumers often need different lengths of lint rollers when applying the lint roller to different environments, and as the number of lint rollers resold on the market increases, the lengths of the lint rollers are diverse, such as 10 cm, 14 cm, 16 cm, 18 cm, 21 cm, and so on.

[0004] To solve the problem of the support adapting to a single length of the lint roller, someone has proposed a telescopic lint roller (authorized publication number CN222722967U), in which the first telescopic part and the second telescopic part rotatably connected to both ends of the lint roller are arranged on both sides of the mounting part, the second telescopic part is provided with an adjusting protrusion, the mounting part is provided with two adjusting grooves, and the adjusting protrusion is embedded in the adjusting groove. When a longer lint roller is needed, the adjusting protrusion is embedded in the adjusting groove away from the first adjusting part, and when a shorter lint roller is needed, the adjusting protrusion is embedded in the adjusting groove close to the first adjusting part. Although the above-mentioned telescopic lint roller has adapted to two lengths of the lint roller, it still cannot meet the needs of many consumers. SUMMARY

[0005] The utility model provides a kind of lint roller, and the technical problems to be solved by the utility model are how to make the lint roller can adapt to multiple different lengths of lint roller, and how to improve the operation convenience when the lint roller adapts to different lengths of lint roller and replaces lint roller.

[0006] The technical problem to be solved by the utility model can be solved by the following technical scheme: a hair sticking device, including support main body, left connecting arm, right connecting arm and hair sticking roller, the support main body has guide cavity inside, the left connecting arm has left rotary connecting part and left guide rod part, the right connecting arm has right rotary connecting part and right guide rod part, the left guide rod part penetrates into the guide cavity from the left side surface of the support main body, the right guide rod part penetrates into the guide cavity from the right side surface of the support main body, the side surface of the left guide rod part and the side surface of the right guide rod part and the side surface of the guide cavity form linear guide structure; the hair sticking roller is located between the left rotary connecting part and the right rotary connecting part, and the two ends of the hair sticking roller are connected with the left rotary connecting part and the right rotary connecting part respectively; characterized in that the support main body is rotatably connected with synchronous gear through main shaft, the left guide rod part and the right guide rod part are provided with rack part engaged with the synchronous gear, and the left connecting arm and the right connecting arm can move synchronously and oppositely.

[0007] The hair sticking device further includes movement locking structure for locking the left guide rod part and / or the right guide rod part relative to the support main body in a movement locking state, and the movement locking structure includes friction block capable of generating friction between the left guide rod part and / or the right guide rod part and the support main body, or the movement locking structure includes a plurality of locking grooves and a locking tongue capable of being embedded in the locking grooves.

[0008] In the hair sticking roller, the left connecting arm and the right connecting arm are connected through the synchronous gear and the rack part, and moving the left connecting arm or the right connecting arm can make the left rotary connecting part and the right rotary connecting part move synchronously and oppositely, so as to increase or reduce the distance between the left rotary connecting part and the right rotary connecting part; in the reducing process, the distance between the left rotary connecting part and the right rotary connecting part is automatically adapted to the length of the hair sticking roller, that is, the hair sticking roller can be adapted to more hair sticking rollers with different lengths.

[0009] When the hair sticking roller is replaced, the left connecting arm or the right connecting arm is pulled outward, the distance between the left connecting arm and the right connecting arm is increased, and the hair sticking roller can be automatically detached; after the new hair sticking roller is put in, the left connecting arm or the right connecting arm is pushed inward, the distance between the left connecting arm and the right connecting arm is reduced, and the two ends of the hair sticking roller are connected with the left rotary connecting part and the right rotary connecting part respectively.

[0010] The hair sticking device uses hair sticking rollers with different lengths, and the left rotary connecting part, the right rotary connecting part and the hair sticking roller are always symmetrically arranged relative to the handheld connecting part, so as to provide the comfort of use for consumers. The hair sticking device only needs to pull or push the left connecting arm or the right connecting arm, and has the advantage of convenient operation.

[0011] In the hair sticking device, the left guide rod part and the right guide rod part are provided with range limiting holes arranged in the longitudinal direction, and the support main body is provided with range limiting columns embedded in the range limiting holes.

[0012] In the above-described hair sticking device, the side surface of the range limiting column and the side surface of the range limiting hole form an auxiliary guide structure.

[0013] In the above-described hair sticking device, the bracket body comprises a bottom rod and an upper cover, the bottom rod and the upper cover are fixedly connected through buckles and / or screws, and a left-right through guide cavity is formed between the bottom rod and the upper cover; the range limiting column is fixedly connected to the upper cover, a first connecting hole is formed in the bottom rod, and an end portion of the range limiting column is embedded in the first connecting hole.

[0014] In the above-described hair sticking device, the screw is connected to the range limiting column through the first connecting hole.

[0015] In the above-described hair sticking device, the main shaft is fixedly connected to the bottom rod, a second connecting hole is formed in the upper cover, and an end portion of the main shaft is embedded in the second connecting hole.

[0016] In the above-described hair sticking device, a first spring is installed between the left guide rod portion and / or the right guide rod portion and the bracket body, and the first spring always has a reducing trend for the distance between the left rotating connecting portion and the right rotating connecting portion. Under the elastic force of the first spring, the distance between the left rotating connecting portion and the right rotating connecting portion is automatically adapted to the length of the hair sticking roller, that is, the left connecting arm or the right connecting arm is gradually released after the new hair sticking roller is put in, the position of the hair sticking roller is adaptively adjusted in this process, and the hair sticking roller is prevented from automatically falling off after the left connecting arm or the right connecting arm is completely released, thereby significantly improving the convenience of installation of the hair sticking roller. Under the action of the moving locking structure, the possibility of free movement of the left connecting arm or the right connecting arm is significantly reduced, and the possibility of falling off of the hair sticking roller is significantly reduced.

[0017] In the above-described hair sticking device, a third spring is installed between the left guide rod portion and / or the right guide rod portion and the bracket body, and the third spring always has an increasing trend for the distance between the left rotating connecting portion and the right rotating connecting portion. When the left guide rod portion and / or the right guide rod portion are switched from the moving locking state to the moving unlocking state relative to the bracket by controlling the moving locking structure during the replacement of the hair sticking roller, the distance between the left rotating connecting portion and the right rotating connecting portion is automatically increased under the elastic force of the third spring, and the hair sticking roller can be automatically removed.

[0018] In summary, during the replacement of the hair sticking roller, the operation steps are further reduced and the operation convenience is improved under the elastic force of the first spring or the third spring.

[0019] In the above-mentioned hair sticking device, the left guide rod part and / or the right guide rod part is provided with a mounting groove, the bottom rod is fixedly connected with an abutting seat embedded in the mounting groove, the first spring is located in the mounting groove, one end of the first spring abuts against the abutting seat, and the other end of the first spring abuts against one end face of the mounting groove; or the third spring is located in the mounting groove, one end of the third spring abuts against the abutting seat, and the other end of the third spring abuts against one end face of the mounting groove. The structure realizes compactness.

[0020] In the above-mentioned hair sticking device, the moving locking structure comprises a lock tongue rotatably connected with the upper cover through a shaft and a plurality of locking grooves located on the left guide rod part and / or the right guide rod part, the plurality of locking grooves are arranged at equal intervals along the longitudinal direction, the number of the locking grooves is 10-20, the center distance between adjacent locking grooves is 2-5 mm, one end of the lock tongue is a tongue part capable of being embedded in the locking groove, the other end of the lock tongue is a pressing operation part, and the lock tongue is further connected with the upper cover through a second spring for maintaining the moving locking state.

[0021] In the above-mentioned hair sticking device, the moving locking structure comprises a friction block threadedly connected with the upper cover, and the friction block is in friction with the upper end face of the right guide rod part to make the right guide rod part relative to the bracket in the moving locking state. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the perspective structure of the hair sticking device.

[0023] Figure 2 is a schematic diagram of the left view structure of the hair sticking device.

[0024] Figure 3 is Figure 2 is a schematic diagram of the sectional structure of A-A in the hair sticking device.

[0025] Figure 4 is Figure 3 is a schematic diagram of the sectional structure of B-B in the hair sticking device.

[0026] Figure 5 is a schematic diagram of the exploded structure of the hair sticking device.

[0027] Figure 6 is a schematic diagram of the perspective structure of the hair sticking device with another length of hair sticking roller installed.

[0028] In the figure, 100, support; 200, left connecting arm; 300, right connecting arm; 400, sticky roller; 1a, support body; 1a1, bottom rod; 1a2, upper cover; 1b, handheld connecting part; 1c, screw; 1d, range limiting column; 1e, main shaft; 1f, abutting seat; 2a, left rotating connecting part; 2b, left guide rod part; 3a, right rotating connecting part; 3b, right guide rod part; 4, range limiting hole; 5, synchronous gear; 6, rack part; 7, mounting groove; 8, first spring; 9, lock tongue; 10, locking groove; 11, second spring. DETAILED DESCRIPTION

[0029] The following is a specific embodiment of the present application and further describes the technical scheme of the present application in combination with the drawings, but the present application is not limited to these embodiments.

[0030] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] It is to be understood that when an element as a preamble is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can also be present. In contrast, when an element as a preamble is referred to as being "connected to" another element, it can be directly on or connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar terms as used herein are used for the purpose of illustration only and are not intended to be limiting.

[0034] Embodiment one: as shown in the figure, a hair sticking device includes a support 100, a left connecting arm 200, a right connecting arm 300 and a hair sticking roller 400. Figures 1 to 5

[0035] The support 100 is used for installing the left connecting arm 200, the right connecting arm 300 and other components, and is used for people to hold the hair sticking device or connect an extension rod. The support 100 includes a support body 1a in the shape of a long strip and a hand holding connecting part 1b connected to the middle part of the support body 1a. The description accompanying drawings show that the hand holding connecting part 1b is connected to the support body 1a through a shaft rotationally, and the hand holding connecting part 1b and the support body 1a can also be fixedly connected according to the actual situation.

[0036] The support body 1a is made of plastic material, and the support body 1a further includes a bottom rod 1a1 and an upper cover 1a2, which are fixedly connected through buckles or screws 1c. A left-right penetrating guide cavity is formed between the bottom rod 1a1 and the upper cover 1a2.

[0037] The left connecting arm 200 has a left rotationally connecting part 2a and a left guide rod part 2b, and the right connecting arm 300 has a right rotationally connecting part 3a and a right guide rod part 3b. The left guide rod part 2b penetrates into the guide cavity from the left side surface of the support body 1a, and the right guide rod part 3b penetrates into the guide cavity from the right side surface of the support 100. The side surface of the left guide rod part 2b and the side surface of the right guide rod part 3b are matched with the side surface of the guide cavity to form a straight line guide structure. Thus, the left connecting arm 200 and the right connecting arm 300 not only can move along the longitudinal line direction of the support body 1a, but also have high load bearing capacity.

[0038] ​The range-limiting hole 4 is longitudinally arranged on the left guide rod 2b and the right guide rod 3b, the range-limiting column 1d is embedded in the range-limiting hole 4, and the range-limiting column 1d is in contact with the end face of the range-limiting hole 4 to limit the moving range of the left connecting arm 200 and the right connecting arm 300. The side face of the range-limiting column 1d cooperates with the side face of the range-limiting hole 4 to form an auxiliary guide structure, thereby further improving the moving stability of the left connecting arm 200 and the right connecting arm 300. The specification drawings show that the range-limiting column 1d is fixedly connected with the upper cover 1a2, the first connecting hole is arranged on the bottom rod 1a1, the end of the range-limiting column 1d is embedded in the first connecting hole, and the screw 1c is connected with the range-limiting column 1d through the first connecting hole, thereby having the advantages of simple structure, compact structure, and large bearing capacity of the range-limiting column 1d.

[0039] The left rotating connecting part 2a and the right rotating connecting part 3a are respectively arranged on the outer sides of the left and right ends of the support body 1a, the lint roller 400 is arranged between the left rotating connecting part 2a and the right rotating connecting part 3a, and the two ends of the lint roller 400 are respectively connected with the left rotating connecting part 2a and the right rotating connecting part 3a. The specification drawings show that the left rotating connecting part 2a and the right rotating connecting part 3a have protruding shaft parts, and the end cover of the lint roller 400 has a cap part sleeved on the shaft part, so that the lint roller 400 is rotatably connected with the left rotating connecting part 2a and the right rotating connecting part 3a.

[0040] The synchronous gear 5 is rotatably connected with the main shaft 1e in the guide cavity of the support 100. The specification drawings show that the main shaft 1e is fixedly connected with the bottom rod 1a1, the second connecting hole is arranged on the upper cover 1a2, and the end of the main shaft 1e is embedded in the second connecting hole, thereby having the advantages of simple structure, compact structure, flexible rotation of the synchronous gear 5, and large bearing capacity.

[0041] The left guide rod 2b and the right guide rod 3b each have a rack part 6 engaged with the synchronous gear 5, and the left connecting arm 200 and the right connecting arm 300 can move synchronously and in opposite directions. The left guide rod 2b and the right guide rod 3b each have a mounting groove 7, the bottom rod 1a1 is fixedly connected with the abutting seat 1f embedded in the mounting groove 7, the first spring 8 is installed in the mounting groove 7 of the left guide rod 2b and the mounting groove 7 of the right guide rod 3b, one end of the first spring 8 abuts against the abutting seat 1f, and the other end of the first spring 8 abuts against the end face of the mounting groove 7, so that the first spring 8 has a constant tendency to reduce the distance between the left rotating connecting part 2a and the right rotating connecting part 3a. According to actual conditions, the first spring 8 can be installed only in the mounting groove 7 of the left guide rod 2b or the mounting groove 7 of the right guide rod 3b. Figures 1 to 6 As shown in the above structure, when the lint roller 400 with different lengths is used, the left rotating connecting part 2a and the right rotating connecting part 3a are always symmetrically arranged relative to the handheld connecting part 1b, which can provide the user with comfortable use.

[0042] The hair sticking device further comprises a movement locking structure for locking the left guide rod part 2b and / or the right guide rod part 3b relative to the bracket main body 1a in a movement locking state. The movement locking structure is shown in the drawings as a set of structures for locking the right guide rod part 3b relative to the bracket 100 in a movement locking state. The movement locking structure comprises a locking tongue 9 connected to the upper cover 1a2 and a plurality of locking grooves 10 on the right guide rod part 3b, the plurality of locking grooves 10 are arranged at equal intervals along the longitudinal direction of the right guide rod part 3b, the number of locking grooves 10 is 10-20, the center distance between adjacent locking grooves 10 is 2-5mm, and the locking tongue 9 can be inserted into any one of the locking grooves 10. Thus, the hair sticking device can adapt to the hair sticking roller 400 of various lengths within the adjustment range of the distance between the left rotating connection part 2a and the right rotating connection part 3a. Through the movement locking structure, not only the axial pressure of the left rotating connection part 2a and the right rotating connection part 3a on the hair sticking roller 400 can be reduced, and the rotating flexibility of the hair sticking roller 400 can be improved, but also the possibility of the hair sticking roller 400 falling off automatically can be significantly reduced. The locking tongue 9 is connected to the upper cover 1a2 through shaft rotation, one end of the locking tongue 9 is a tongue part that can be inserted into the locking groove 10, the other end of the locking tongue 9 is a pressing operation part, and the locking tongue 9 is further connected to the upper cover 1a2 through a second spring 11 for maintaining the above movement locking state.

[0043] Example two: The structure and principle of this embodiment are basically the same as those of example one, and the same parts will not be described again. Only the different parts will be described. The movement locking structure comprises a friction block connected to the upper cover 1a2 through threads, and the friction block is in friction with the upper end surface of the right guide rod part 3b to lock the right guide rod part 3b relative to the bracket 100 in a movement locking state. The hair sticking device can adapt to the hair sticking roller 400 of any length within the adjustment range of the distance between the left rotating connection part 2a and the right rotating connection part 3a.

[0044] Example three: The structure and principle of this embodiment are basically the same as those of example one or example two, and the same parts will not be described again. Only the different parts will be described.

[0045] The mounting groove 7 of the left guide rod part 2b and the mounting groove 7 of the right guide rod part 3b are each mounted with a third spring, one end of the third spring is in abutment with the abutment seat 1f, and the other end of the third spring is in abutment with one end face of the mounting groove 7, so that the spacing between the left rotating connecting part 2a and the right rotating connecting part 3a always has a tendency to increase under the elastic force of the third spring. According to actual conditions, only the third spring can be mounted in the mounting groove 7 of the left guide rod part 2b or the mounting groove 7 of the right guide rod part 3b. During replacement of the sticky roller 400, when the moving locking structure is controlled to switch the left guide rod part 2b and / or the right guide rod part 3b from the moving locking state to the moving unlocking state relative to the support 100, the spacing between the left rotating connecting part 2a and the right rotating connecting part 3a is automatically increased under the elastic force of the third spring, and the sticky roller 400 can be automatically detached.

Claims

1. A hair sticking device, comprising a support body (1a), a left connecting arm (200), a right connecting arm (300) and a hair sticking roller (400), the support body (1a) having a guide cavity therein, the left connecting arm (200) having a left rotary connecting part (2a) and a left guide rod part (2b), the right connecting arm (300) having a right rotary connecting part (3a) and a right guide rod part (3b), the left guide rod part (2b) penetrating into the guide cavity from the left side surface of the support body (1a), the right guide rod part (3b) penetrating into the guide cavity from the right side surface of the support body (1a), the side surface of the left guide rod part (2b) and the side surface of the right guide rod part (3b) and the side surface of the guide cavity all forming a straight line guide structure; the hair sticking roller (400) being located between the left rotary connecting part (2a) and the right rotary connecting part (3a), the two ends of the hair sticking roller (400) being connected with the left rotary connecting part (2a) and the right rotary connecting part (3a) respectively; characterized in that, The support body (1a) is rotationally connected with a synchronous gear (5) through a main shaft (1e), the left guide rod part (2b) and the right guide rod part (3b) are each provided with a rack part (6) engaged with the synchronous gear (5), and the left connecting arm (200) and the right connecting arm (300) can synchronously and oppositely move; The hair sticking device further comprises a movement locking structure for locking the movement between the left guide rod part (2b) and / or the right guide rod part (3b) and the support body (1a), the movement locking structure comprises a friction block for generating friction between the left guide rod part (2b) and / or the right guide rod part (3b) and the support body (1a), or the movement locking structure comprises a plurality of locking grooves (10) and a locking tongue (9) capable of being embedded in the locking grooves (10).

2. The applicator according to claim 1, wherein The left guide rod part (2b) and the right guide rod part (3b) are each provided with a range limiting hole (4) arranged along the longitudinal direction, and the support body (1a) is provided with a range limiting column (1d) embedded in the range limiting hole (4).

3. The applicator according to claim 2, wherein The side surface of the range limiting column (1d) and the side surface of the range limiting hole (4) form auxiliary guide structures.

4. The applicator according to claim 2 or 3, characterized in that The support body (1a) comprises a bottom rod (1a1) and an upper cover (1a2), the bottom rod (1a1) and the upper cover (1a2) are fixedly connected through buckles and / or screws (1c), and a left-right-through guide cavity is formed between the bottom rod (1a1) and the upper cover (1a2); the range limiting column (1d) is fixedly connected with the upper cover (1a2), the bottom rod (1a1) is provided with a first connecting hole, and the end of the range limiting column (1d) is embedded in the first connecting hole.

5. The applicator according to claim 4, wherein The screw (1c) is connected with the range limiting column (1d) through the first connecting hole.

6. The applicator of claim 4, wherein The main shaft (1e) is fixedly connected with the bottom rod (1a1), the upper cover (1a2) is provided with a second connecting hole, and the end of the main shaft (1e) is embedded in the second connecting hole.

7. The applicator according to claim 1 or 2 or 3, wherein A first spring (8) is arranged between the left guide rod part (2b) and / or the right guide rod part (3b) and the support body (1a), and the first spring (8) has a constant tendency to reduce the distance between the left rotating connecting part (2a) and the right rotating connecting part (3a); Or a third spring is arranged between the left guide rod part (2b) and / or the right guide rod part (3b) and the support body (1a), and the third spring has a constant tendency to increase the distance between the left rotating connecting part (2a) and the right rotating connecting part (3a).

8. The applicator according to claim 7, wherein The left guide rod part (2b) and / or the right guide rod part (3b) are each provided with a mounting groove (7), the bottom rod (1a1) is fixedly connected with an abutting seat (1f) embedded in the mounting groove (7), the first spring (8) is located in the mounting groove (7), one end of the first spring (8) abuts against the abutting seat (1f), and the other end of the first spring (8) abuts against one end surface of the mounting groove (7); Or the left guide rod part (2b) and / or right guide rod part (3b) are provided with mounting grooves (7), the bottom rod (1a1) is fixedly connected with abutting seats (1f) embedded in the mounting grooves (7), and the third spring is located in the mounting grooves (7), one end of the third spring is in abutment with the abutting seat (1f), and the other end of the third spring is in abutment with one end face of the mounting groove (7).

9. The applicator according to claim 1 or 2 or 3, wherein The mobile locking structure comprises a lock tongue (9) rotationally connected with the upper cover (1a2) through a shaft and a plurality of locking grooves (10) located on the left guide rod part (2b) and / or the right guide rod part (3b), the plurality of locking grooves (10) are arranged at equal intervals along the longitudinal direction, the number of the locking grooves (10) is 10-20, the center distance between adjacent locking grooves (10) is 2-5 mm, and the lock tongue (9) is embedded in the locking groove (10) to make the right guide rod part (3b) in a mobile locking state relative to the bracket (100). Or the mobile locking structure comprises a friction block threadedly connected with the upper cover (1a2), and the friction block is in friction with the upper end face of the right guide rod part (3b) to make the right guide rod part (3b) in a mobile locking state relative to the bracket (100).

10. The applicator of claim 9, wherein One end of the lock tongue (9) is a tongue part capable of being embedded in the locking groove (10), the other end of the lock tongue (9) is a pressing operation part, and the lock tongue (9) is further connected with the upper cover (1a2) through a second spring (11) for maintaining the mobile locking state.

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